# Class CodenameOneImplementation

java.lang.Object
com.codename1.impl.CodenameOneImplementation

public abstract class CodenameOneImplementation extends Object

Represents a vendor extension mechanizm for Codename One, WARNING: this class is for internal use only and is subject to change in future API revisions. To replace the way in which Codename One performs its task this class can be extended and its functionality replaced or enhanced.

It is the responsibility of the implementation class to grab and fire all events to the Display specifically for key, pointer events and screen resolution.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `CodenameOneImplementation()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `addCompletionHandler(Media media, Runnable onCompletion)`
  Adds a callback to a Media element that will be called when the media finishes playing.
  `void`
  `addConnectionToQueue(ConnectionRequest req)`
  This method is called by the NetworkManager when a request is added to the queue.
  `void`
  `addCookie(Cookie c)`
  Adds/replaces a cookie to be sent to the given domain
  `void`
  `addCookie(Cookie[] cookiesArray)`
  `void`
  `addHeavyActionListener(Object peer, ActionListener l)`
  Adds an action listener which will be run in response to the native button's click event.
  `void`
  `addNativeBrowserWindowOnLoadListener(Object window, ActionListener l)`
  Adds a load listener to a native browser window.
  `byte[]`
  `aesDecrypt(String transformation, byte[] key, byte[] iv, byte[] aad, byte[] ciphertext)`
  Decrypts with AES.
  `byte[]`
  `aesEncrypt(String transformation, byte[] key, byte[] iv, byte[] aad, byte[] plaintext)`
  Encrypts with AES.
  `void`
  `afterComponentPaint(Component c, Graphics g)`
  Called after internal paint of component finishes
  `boolean`
  `animateImage(Object nativeImage, long lastFrame)`
  Callback to allow images animated by the underlying system to change their state e.g.
  `void`
  `announceForAccessibility(Component cmp, String text)`
  Manually announces text to native accessibility services, associating the announcement with a specific component when possible.
  `boolean`
  `areMutableImagesFast()`
  On most platforms it is quite fast to draw on a mutable image and then render that image, however some platforms have much slower mutable images in comparison to just drawing on the screen.
  `void`
  `beforeComponentPaint(Component c, Graphics g)`
  Called before internal paint of component starts
  `void`
  `blockCopyPaste(boolean blockCopyPaste)`
  Blocks or enables copy and paste in the entire app.
  `boolean`
  `blurRegion(Object graphics, int x, int y, int width, int height, float radius)`
  In-place region blur for CSS backdrop-filter:blur().
  `void`
  `browserBack(PeerComponent browserPeer)`
  Navigates back in the history
  `void`
  `browserClearHistory(PeerComponent browserPeer)`
  Clears navigation history
  `void`
  `browserDestroy(PeerComponent internal)`
  Release browser native resources
  `void`
  `browserExecute(PeerComponent browserPeer, String javaScript)`
  Executes the given JavaScript string within the current context
  `String`
  `browserExecuteAndReturnString(PeerComponent internal, String javaScript)`
  Executes javascript and returns string.
  `void`
  `browserExposeInJavaScript(PeerComponent browserPeer, Object o, String name)`
  Allows exposing the given object to JavaScript code so the JavaScript code can invoke methods and access fields on the given object.
  `void`
  `browserForward(PeerComponent browserPeer)`
  Navigates forward in the history
  `boolean`
  `browserHasBack(PeerComponent browserPeer)`
  Indicates whether back is currently available
  `boolean`
  `browserHasForward(PeerComponent browserPeer)`
  Indicates whether forward is currently available
  `void`
  `browserReload(PeerComponent browserPeer)`
  Reload the current page
  `void`
  `browserStop(PeerComponent browserPeer)`
  Stops loading the current page
  `protected boolean`
  `cacheLinearGradients()`
  Indicates whether the implementation is interested in caching linear gradients for drawing.
  `protected boolean`
  `cacheRadialGradients()`
  Indicates whether the implementation is interested in caching radial gradients for drawing.
  `void`
  `cancelBackgroundProcessing(String id)`
  Cancels a scheduled background processing task.
  `void`
  `cancelBackgroundWork(String workId)`
  Cancels previously scheduled background work.
  `void`
  `cancelLocalNotification(String notificationId)`
  `void`
  `cancelRepaint(Animation cmp)`
  Removes an entry from the paint queue if it exists, this is important for cases in which a component was repainted and immediately removed from its parent container afterwards.
  `boolean`
  `canDial()`
  Returns true if the device has dialing capabilities
  `Boolean`
  `canExecute(String url)`
  Returns true if executing this URL should work, returns false if it will not and null if this is unknown.
  `boolean`
  `canForceOrientation()`
  Returns true if the device allows forcing the orientation via code, feature phones do not allow this although some include a jad property allowing for this feature
  `boolean`
  `canGetSSLCertificates()`
  Checks if the platform supports getting SSL certificates.
  `boolean`
  `canInstallOnHomescreen()`
  Checks to see if you can prompt the user to install the app on their homescreen.
  `void`
  `captureAudio(MediaRecorderBuilder recordingOptions, ActionListener<ActionEvent> response)`
  Captures a audio and notifies with the raw data when available
  `void`
  `captureAudio(ActionListener<ActionEvent> response)`
  `AsyncResource<Image>`
  `captureBrowserScreenshot(PeerComponent browserPeer)`
  Captures a screenshot from a browser component asynchronously.
  `void`
  `capturePhoto(ActionListener response)`
  Captures a photo and notifies with the image data when available
  `Image`
  `captureScreen()`
  Captures a screenshot of the screen.
  `void`
  `captureVideo(VideoCaptureConstraints constraints, ActionListener response)`
  Captures a video, and notifies with the data when available.
  `void`
  `captureVideo(ActionListener response)`
  Captures a video and notifies with the data when available
  `abstract int`
  `charsWidth(Object nativeFont, char[] ch, int offset, int length)`
  Return the width of the given characters in the given native font instance
  `abstract int`
  `charWidth(Object nativeFont, char ch)`
  Return the width of the specific character when rendered alone
  `boolean`
  `checkSSLCertificatesRequiresCallbackFromNative()`
  SSL certificate checks must be performed via a callback from the native side, rather than explicitly checking as part of NetworkManager's connection flow.
  `void`
  `cleanup(Object o)`
  Closes the object (connection, stream etc.) without throwing any exception, even if the object is null
  `void`
  `clearNativeCookies()`
  `void`
  `clearRect(Object graphics, int x, int y, int width, int height)`
  `void`
  `clearStorage()`
  Deletes all the files in the application storage
  `abstract void`
  `clipRect(Object graphics, int x, int y, int width, int height)`
  Changes the current clipping rectangle to subset the current clipping with the given clipping.
  `void`
  `clipRect(Object graphics, Rectangle rect)`
  Changes the current clipping rectangle to subset the current clipping with the given clipping.
  `void`
  `closeNativeWindow()`
  Closes the native desktop window when the application draws its own (custom mode) window chrome.
  `void`
  `closingOutput(OutputStream s)`
  Allows binding logic to occur before closing the output stream such as syncing
  `void`
  `componentRemoved(Component c)`
  Indicates to the port that the component was removed from the view and its UI should be removed in the next flush operation.
  `final int`
  `concatenateAlpha(Object graphics, int alpha)`
  Concatenates alpha value to current alpha.
  `void`
  `concatenateTransform(Object t1, Object t2)`
  Concatenates two transforms and sets the first transform to be the result of the concatenation.
  `void`
  `confirmControlView()`
  Callback method allowing the implementation to confirm that it controls the view just before a new form is installed.
  `abstract Object`
  `connect(String url, boolean read, boolean write)`
  Connects to a given URL, returns a connection object to be used with the implementation later
  `Object`
  `connect(String url, boolean read, boolean write, int timeout)`
  Connects to a given URL, returns a connection object to be used with the implementation later
  `Object`
  `connectSocket(String host, int port)`
  Creates a socket to connect to the given host on the given port
  `Object`
  `connectSocket(String host, int port, int connectTimeout)`
  Creates a socket to connect to the given host on the given port
  `String`
  `convertBidiLogicalToVisual(String s)`
  Converts the given string from logical bidi layout to visual bidi layout so it can be rendered properly on the screen.
  `protected Object`
  `convertBuiltinSound(InputStream i)`
  Converts a sound object to a form which will be easy for the implementation to play later on.
  `int`
  `convertToPixels(int dipCount, boolean horizontal)`
  Converts the dips count to pixels, dips are roughly 1mm in length.
  `void`
  `copySelectionToClipboard(TextSelection sel)`
  Copies the current text selection to the clipboard.
  `void`
  `copyToClipboard(Object obj)`
  Performs a clipboard copy operation, if the native clipboard is supported by the implementation it would be used
  `void`
  `copyTransform(Object src, Object dest)`
  Copies the setting of one transform into another.
  `Media`
  `createBackgroundMedia(String uri)`
  Creates an audio media that can be played in the background.
  `AsyncResource<Media>`
  `createBackgroundMediaAsync(String uri)`
  Creates an audio media that can be played in the background.
  `protected BonjourPlatform`
  `createBonjourPlatform()`
  `PeerComponent`
  `createBrowserComponent(Object browserComponent)`
  If the implementation supports the creation of a browser component it should be returned in this method
  `String`
  `createContact(String firstName, String surname, String officePhone, String homePhone, String cellPhone, String email)`
  Create a contact to the device contacts book
  `abstract Object`
  `createFont(int face, int style, int size)`
  Creates a new instance of a native font
  `Object`
  `createHeavyButton(Button aThis)`
  Creates the native side of a `com.codename1.ui.HeavyButton`.
  `abstract Object`
  `createImage(byte[] bytes, int offset, int len)`
  Create a nativate image from its compressed byte data
  `abstract Object`
  `createImage(int[] rgb, int width, int height)`
  Create a platform native image object from the given RGB data
  `Image`
  `createImage(Shape shape, Stroke stroke, int color)`
  `abstract Object`
  `createImage(InputStream i)`
  Creates a native image from a given input stream
  `abstract Object`
  `createImage(String path)`
  Creates a native image from a file in the system jar or file system storage.
  `Media`
  `createMedia(InputStream stream, String mimeType, Runnable onCompletion)`
  Plays the sound in the given stream
  `Media`
  `createMedia(String uri, boolean isVideo, Runnable onCompletion)`
  Plays the sound in the given URI which is partially platform specific.
  `AsyncResource<Media>`
  `createMediaAsync(InputStream stream, String mimeType, Runnable onCompletion)`
  Creates media asynchronously.
  `AsyncResource<Media>`
  `createMediaAsync(String uri, boolean video, Runnable onCompletion)`
  Creates media asynchronously.
  `Media`
  `createMediaRecorder(MediaRecorderBuilder builder)`
  Creates a Media recorder Object which will record from the device mic to a file in the given path.
  `Media`
  `createMediaRecorder(String path, String mimeType)`
  Creates a Media recorder Object which will record from the device mic to a file in the given path.
  `abstract Object`
  `createMutableImage(int width, int height, int fillColor)`
  Creates a modifable native image that can return a graphics object
  `Object`
  `createNativeBrowserWindow(String startURL)`
  Creates a native web browser window object.
  `Object`
  `createNativeIndexed(Image image)`
  Creates a native image representing the indexed image
  `Object`
  `createNativeOverlay(Component cmp)`
  Creates a native overlay for the given component.
  `PeerComponent`
  `createNativePeer(Object nativeComponent)`
  Creates a peer component for the given lightweight component
  `protected NetworkTypePlatform`
  `createNetworkTypePlatform()`
  `void`
  `createNotificationChannelGroup(String groupId, String groupName)`
  Creates a notification channel group.
  `protected BrowserComponent`
  `createSharedJavascriptContext()`
  Creates a shared javascript context.
  `Simd`
  `createSimd()`
  Creates the SIMD implementation for this platform.
  `Object`
  `createSoftWeakRef(Object o)`
  Creates a soft/weak reference to an object that allows it to be collected yet caches it.
  `SoundPoolPeer`
  `createSoundPool(int maxStreams)`
  Creates a native low latency sound pool peer, or returns null when this platform does not provide one (the default).
  `abstract InputStream`
  `createStorageInputStream(String name)`
  Creates an input stream to the given storage source file
  `abstract OutputStream`
  `createStorageOutputStream(String name)`
  Creates an output stream to the storage with the given name
  `Object`
  `createSVGImage(String baseURL, byte[] data)`
  Creates an SVG Image from the given byte array data and the base URL
  `protected UsbPlatform`
  `createUsbPlatform()`
  `WebSocketImpl`
  `createWebSocketImpl(String url)`
  Create a platform-specific `WebSocketImpl` bound to the given URL.
  `protected WifiDirectPlatform`
  `createWifiDirectPlatform()`
  `protected WifiPlatform`
  `createWifiPlatform()`
  Platform ports override to return their WiFi implementation.
  `byte[]`
  `cryptoSign(String algorithm, String keyAlgorithm, byte[] privateKeyPkcs8, byte[] data)`
  Computes a signature.
  `boolean`
  `cryptoVerify(String algorithm, String keyAlgorithm, byte[] publicKeyX509, byte[] data, byte[] signature)`
  Verifies a signature with an X.509 public key.
  `void`
  `deinitialize()`
  Allows subclasses to cleanup if necessary
  `void`
  `deinitializeHeavyButton(Object peer)`
  Deinitializes a heavy button.
  `void`
  `deinitializeTextSelection(TextSelection aThis)`
  Deinitializes text selection.
  `boolean`
  `deleteContact(String id)`
  removed a contact from the device contacts book
  `void`
  `deleteDB(String databaseName)`
  Deletes database
  `abstract void`
  `deleteFile(String file)`
  Deletes the specific file or empty directory.
  `void`
  `deleteNotificationChannel(String channelId)`
  Deletes a notification channel.
  `abstract void`
  `deleteStorageFile(String name)`
  Deletes the given file name from the storage
  `void`
  `deregisterPush()`
  Stop receiving push notifications to this client application
  `static void`
  `deregisterPushFromServer()`
  For use by implementations, stop receiving push notifications from the server
  `Object`
  `deriveTrueTypeFont(Object font, float size, int weight)`
  Creates a font based on this truetype font with the given pixel, WARNING! This method will only work in the case of truetype fonts!
  `void`
  `dial(String phoneNumber)`
  Opens the device Dialer application with the given phone number
  `void`
  `disconnectSocket(Object socket)`
  Disconnects the current socket from the server/client on the other side
  `void`
  `dismissNotification(Object o)`
  Removes the notification previously posted with the notify status bar method
  `void`
  `disposeGraphics(Object graphics)`
  Cleans up resources used by graphics object
  `boolean`
  `downloadBytesAsFile(String fileName, byte[] bytes)`
  Offers the given in-memory bytes to the user as a downloadable file, bypassing local storage.
  `void`
  `downloadImageToCache(String url, SuccessCallback<Image> onSuccess, FailureCallback<Image> onFail)`
  Downloads an image from a URL to the cache.
  `void`
  `downloadImageToFileSystem(String url, String fileName, SuccessCallback<Image> onSuccess, FailureCallback<Image> onFail)`
  Downloads an image to file system.
  `void`
  `downloadImageToStorage(String url, String fileName, SuccessCallback<Image> onSuccess, FailureCallback<Image> onFail)`
  Downloads an image to storage.
  `void`
  `dragNativeWindow(int x, int y)`
  Continues dragging the native desktop window (custom mode title bar).
  `abstract void`
  `drawArc(Object graphics, int x, int y, int width, int height, int startAngle, int arcAngle)`
  Draws a circular or elliptical arc based on the given angles and bounding box
  `abstract void`
  `drawImage(Object graphics, Object img, int x, int y)`
  Draws the image so its top left coordinate corresponds to x/y
  `void`
  `drawImage(Object graphics, Object img, int x, int y, int w, int h)`
  Draws the image so its top left coordinate corresponds to x/y
  `void`
  `drawImageArea(Object nativeGraphics, Object img, int x, int y, int imageX, int imageY, int imageWidth, int imageHeight)`
  Draws a portion of the image
  `void`
  `drawImageRotated(Object graphics, Object img, int x, int y, int degrees)`
  Draws the image so its top left coordinate corresponds to x/y with a fast native rotation in a square angle which must be one of 0, 90, 180 or 270
  `void`
  `drawingEncodedImage(EncodedImage img)`
  This method is used by the JavaSE implementation for performance logging
  `void`
  `drawLabelComponent(Object nativeGraphics, int cmpX, int cmpY, int cmpHeight, int cmpWidth, Style style, String text, Object icon, Object stateIcon, int preserveSpaceForState, int gap, boolean rtl, boolean isOppositeSide, int textPosition, int stringWidth, boolean isTickerRunning, int tickerShiftText, boolean endsWith3Points, int valign)`
  Draws a label on the given graphics context, this method allows optimizing the very common drawing operation using platform native code
  `protected int`
  `drawLabelText(Object nativeGraphics, int textDecoration, boolean rtl, boolean isTickerRunning, boolean endsWith3Points, Object nativeFont, int txtW, int textSpaceW, int shiftText, String text, int x, int y, int fontHeight)`
  Draws the text of a label
  `abstract void`
  `drawLine(Object graphics, int x1, int y1, int x2, int y2)`
  Draws a line between the 2 X/Y coordinates
  `void`
  `drawPolygon(Object graphics, int[] xPoints, int[] yPoints, int nPoints)`
  Draws a closed polygon defined by arrays of x and y coordinates.
  `abstract void`
  `drawRect(Object graphics, int x, int y, int width, int height)`
  Draws a rectangle in the given coordinates
  `void`
  `drawRect(Object graphics, int x, int y, int width, int height, int thickness)`
  Draws a rectangle in the given coordinates
  `abstract void`
  `drawRGB(Object graphics, int[] rgbData, int offset, int x, int y, int w, int h, boolean processAlpha)`
  Draws the RGB values based on the MIDP API of a similar name.
  `abstract void`
  `drawRoundRect(Object graphics, int x, int y, int width, int height, int arcWidth, int arcHeight)`
  Draws a rounded corner rectangle in the given coordinates with the arcWidth/height matching the last two arguments respectively.
  `void`
  `drawShadow(Object graphics, Object image, int x, int y, int offsetX, int offsetY, int blurRadius, int spreadRadius, int color, float opacity)`
  Draws a drop shadow for an image onto the given graphics context.
  `void`
  `drawShape(Object graphics, Shape shape, Stroke stroke)`
  Draws outline of shape on the given graphics context.
  `void`
  `drawString(Object nativeGraphics, Object nativeFont, String str, int x, int y, int textDecoration)`
  Draw a string using the current font and color in the x,y coordinates.
  `abstract void`
  `drawString(Object graphics, String str, int x, int y)`
  Draw a string using the current font and color in the x,y coordinates.
  `abstract void`
  `editString(Component cmp, int maxSize, int constraint, String text, int initiatingKeycode)`
  Encapsulates the editing code which is specific to the platform, some platforms would allow "in place editing" MIDP does not.
  `final void`
  `editStringImpl(Component cmp, int maxSize, int constraint, String text, int initiatingKeycode)`
  Encapsulates the editing code which is specific to the platform, some platforms would allow "in place editing" MIDP does not.
  `void`
  `edtIdle(boolean enter)`
  This method is a callback from the edt before the edt enters to an idle state
  `void`
  `execute(String url)`
  Executes the given URL on the native platform
  `void`
  `execute(String url, ActionListener response)`
  Executes the given URL on the native platform, this method is useful if the platform has the ability to send an event to the app when the execution has ended, currently this works only for Android platform to invoke other intents.
  `abstract boolean`
  `exists(String file)`
  Indicates whether the given file exists
  `boolean`
  `existsDB(String databaseName)`
  Indicates weather a database exists
  `void`
  `exit()`
  Exits the application...
  `void`
  `exitApplication()`
  Exits the application...
  `boolean`
  `exitFullScreen()`
  Exit full-screen mode.
  `Object`
  `extractHardRef(Object o)`
  Extracts the hard reference from the soft/weak reference given
  `abstract void`
  `fillArc(Object graphics, int x, int y, int width, int height, int startAngle, int arcAngle)`
  Fills a circular or elliptical arc based on the given angles and bounding box.
  `void`
  `fillGradient(Object graphics, Gradient gradient, int x, int y, int width, int height)`
  Fills the rectangle (x, y, width, height) with the given multi-stop gradient.
  `void`
  `fillLinearGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height, boolean horizontal)`
  Draws a linear gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient
  `void`
  `fillPolygon(Object graphics, int[] xPoints, int[] yPoints, int nPoints)`
  Fills a closed polygon defined by arrays of x and y coordinates.
  `void`
  `fillRadialGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height)`
  Draws a radial gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient.
  `void`
  `fillRadialGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height, int startAngle, int arcAngle)`
  Draws a radial gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient.
  `abstract void`
  `fillRect(Object graphics, int x, int y, int width, int height)`
  Fills the rectangle from the given position according to the width/height minus 1 pixel according to the convention in Java.
  `void`
  `fillRect(Object nativeGraphics, int x, int y, int w, int h, byte alpha)`
  Fills a rectangle with an optionally translucent fill color
  `void`
  `fillRectRadialGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height, float relativeX, float relativeY, float relativeSize)`
  Draws a radial gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient.
  `abstract void`
  `fillRoundRect(Object graphics, int x, int y, int width, int height, int arcWidth, int arcHeight)`
  Fills a rounded rectangle in the same way as drawRoundRect
  `void`
  `fillShape(Object graphics, Shape shape)`
  Fills the given shape in the specified graphics context using the graphics context's currently selected color and alpha.
  `void`
  `fillTriangle(Object graphics, int x1, int y1, int x2, int y2, int x3, int y3)`
  Draws a filled triangle with the given coordinates
  `void`
  `fireSharedContentReceived(SharedContent content)`
  Delivers shared content to the running application instance.
  `void`
  `flashBacklight(int duration)`
  Flash the backlight of the device for the given length of time
  `Image`
  `flipImageHorizontally(Image image, boolean maintainOpacity)`
  Flips the given image on the horizontal axis
  `Image`
  `flipImageVertically(Image image, boolean maintainOpacity)`
  Flips the given image on the vertical axis
  `abstract void`
  `flushGraphics()`
  Flush the currently painted drawing onto the screen if using a double buffer
  `abstract void`
  `flushGraphics(int x, int y, int width, int height)`
  Flush the currently painted drawing onto the screen if using a double buffer
  `void`
  `flushStorageCache()`
  Flush the storage cache allowing implementations that cache storage objects to store
  `Image`
  `gaussianBlurImage(Image image, float radius)`
  `byte[][]`
  `generateRsaKeyPair(int bits)`
  Generates a fresh RSA key pair of the given size in bits.
  `byte[]`
  `generateSymmetricKey(int bytes)`
  Generates `bytes` of fresh symmetric key material.
  `int`
  `getActualDisplayHeight()`
  Returns the display height ignoring manipulations performed by the VKB
  `String[]`
  `getAllContacts(boolean withNumbers)`
  Gets all contacts from the address book of the device
  `Contact[]`
  `getAllContacts(boolean withNumbers, boolean includesFullName, boolean includesPicture, boolean includesNumbers, boolean includesEmail, boolean includeAddress)`
  Notice: this method might be very slow and should be invoked on a separate thread! It might have platform specific optimizations over getAllContacts followed by looping over individual contacts but that isn't guaranteed.
  `abstract int`
  `getAlpha(Object graphics)`
  Alpha value from 0-255 can be ignored for some operations
  `String[]`
  `getAPIds()`
  Returns the ids of the access points available if supported
  `String`
  `getAPName(String id)`
  Returns the user displayable name for the given access point
  `String`
  `getAppArg()`
  `String`
  `getAppHomePath()`
  This will return the application home directory.
  `Image`
  `getApplicationIconImage()`
  Returns an image representing the application icon, or null if not supported.
  `protected static String`
  `getApplicationKey()`
  Returns the key for the application comprised of the builders email coupled with the package name.
  `int`
  `getAPType(String id)`
  Returns the type of the access point
  `String[]`
  `getAvailableRecordingMimeTypes()`
  Gets the available recording MimeTypes
  `abstract int`
  `getBackKeyCode()`
  Returns the keycode for the back key
  `abstract int`
  `getBackspaceKeyCode()`
  Returns the keycode for the backspace key
  `Biometrics`
  `getBiometrics()`
  Returns the port-specific biometric authentication entry point.
  `final BonjourPlatform`
  `getBonjourPlatform()`
  `String`
  `getBrowserTitle(PeerComponent browserPeer)`
  The page title
  `String`
  `getBrowserURL(PeerComponent browserPeer)`
  The page URL
  `String`
  `getCachesDir()`
  Returns a device specific directory designed for cache style files, or null if `#hasCachesDir()` is false
  `int`
  `getCharLocation(String source, int index)`
  Returns the index of the given char within the source string, the actual index isn't necessarily the same when bidi is involved See this for more on visual vs.
  `abstract int`
  `getClearKeyCode()`
  Returns the keycode for the clear key
  `abstract int`
  `getClipHeight(Object graphics)`
  Returns the clipping coordinate
  `Rectangle`
  `getClipRect(Object graphics)`
  Returns the internal clipping rectangle.
  `abstract int`
  `getClipWidth(Object graphics)`
  Returns the clipping coordinate
  `abstract int`
  `getClipX(Object graphics)`
  Returns the clipping coordinate
  `abstract int`
  `getClipY(Object graphics)`
  Returns the clipping coordinate
  `protected Graphics`
  `getCodenameOneGraphics()`
  Returns a graphics object for use by the painting
  `CodeScanner`
  `getCodeScanner()`
  Returns the native implementation of the code scanner or null
  `abstract int`
  `getColor(Object graphics)`
  Returns the current color
  `int`
  `getCommandBehavior()`
  Indicates the way commands should be added to a form as one of the ocmmand constants defined in this class
  `Graphics`
  `getComponentScreenGraphics(Component cmp, Graphics currentContext)`
  This method allows customizing/creating a graphics context per component which is useful for some elaborate implementations of Codename One.
  `Contact`
  `getContactById(String id)`
  Get a Contact according to it's contact id.
  `Contact`
  `getContactById(String id, boolean includesFullName, boolean includesPicture, boolean includesNumbers, boolean includesEmail, boolean includeAddress)`
  This method returns a Contact by the contact id and fills it's data according to the given flags
  `abstract int`
  `getContentLength(Object connection)`
  Returns the content length for this connection
  `Vector`
  `getCookiesForURL(String url)`
  Returns the cookies for this URL
  `String`
  `getCurrentAccessPoint()`
  Returns the id of the current access point
  `static Object`
  `getCurrentApplicationInstance()`
  Returns the running application's main class instance, or null if it has not been captured.
  `Form`
  `getCurrentForm()`
  Returns the current form, this method is for internal use only and does not take transitions/menus into consideration
  `String`
  `getDatabasePath(String databaseName)`
  Returns the file path of the Database if exists and if supported on the platform.
  `abstract Object`
  `getDefaultFont()`
  Return the global default font instance, if font is passed as null this font should be used
  `Dimension`
  `getDesktopSize()`
  Returns the size of the desktop area hosting the application window when running on a desktop platform.
  `String`
  `getDesktopTitleBarMode()`
  Returns the desktop title-bar mode for this platform: one of `"native"` (OS title bar + native menu bar), `"custom"` (undecorated window where the CN1 Toolbar acts as the title bar) or `"toolbar"` (legacy in-app CN1 Toolbar).
  `int`
  `getDeviceDensity()`
  Returns one of the density variables appropriate for this device, notice that density doesn't always correspond to resolution and an implementation might decide to change the density based on DPI constraints.
  `abstract int`
  `getDisplayHeight()`
  Returns the height dimension of the display controlled by this implementation
  `Rectangle`
  `getDisplaySafeArea(Rectangle rect)`
  This method returns a rectangle defining the "safe" area of the display, which excludes areas on the screen that are covered by notches, task bars, rounded corners, etc.
  `abstract int`
  `getDisplayWidth()`
  Returns the width dimension of the display controlled by this implementation
  `protected int`
  `getDragAutoActivationThreshold()`
  This method allows subclasses to manipulate the drag started detection logic.
  `int`
  `getDragPathLength()`
  Indicates how many drag points are used to calculate dragging speed
  `int`
  `getDragPathTime()`
  Indicates what drag points are valid for the drag speed calculation.
  `float`
  `getDragSpeed(float[] points, long[] dragPathTime, int dragPathOffset, int dragPathLength)`
  This method returns the dragging speed based on the latest dragged events
  `int`
  `getDragStartPercentage()`
  This method allows us to manipulate the drag started detection logic.
  `Component`
  `getEditingText()`
  Gets the component that is currently editing text
  `int`
  `getEDTThreadPriority()`
  Returns the platform EDT thread priority
  `int`
  `getFace(Object nativeFont)`
  Optional operation returning the font face for the font
  `long`
  `getFileLastModified(String file)`
  Returns the time that the file denoted by this abstract pathname was last modified.
  `abstract long`
  `getFileLength(String file)`
  Returns the length of the file
  `abstract char`
  `getFileSystemSeparator()`
  Returns the file system separator char normally '/'
  `int`
  `getFontAscent(Object nativeFont)`
  Returns the ascent of the specified native font instance.
  `int`
  `getFontDescent(Object nativeFont)`
  Returns the descent below the baseline that a font can span.
  `String[]`
  `getFontPlatformNames()`
  Returns a list of the platform names ordered by priority, platform names are used to choose a font based on platform.
  `abstract int`
  `getGameAction(int keyCode)`
  Returns the display game action for the given keyCode if applicable to match the contrct of Codename One for the game action behavior
  `GpuImplementation`
  `getGpuImplementation()`
  Returns the platform's GPU backend for the portable 3D API (`com.codename1.gpu.RenderView`), or null on platforms without a 3D backend.
  `abstract String`
  `getHeaderField(String name, Object connection)`
  Returns the HTTP response header field
  `abstract String[]`
  `getHeaderFieldNames(Object connection)`
  Returns the HTTP response header field
  `abstract String[]`
  `getHeaderFields(String name, Object connection)`
  Returns the HTTP response header fields, returns optionally more than one result or null if no field is present.
  `abstract int`
  `getHeight(Object nativeFont)`
  Return the total height of the font
  `String`
  `getHostOrIP()`
  Returns the device host or ip address if available
  `static Class`
  `getImageArrayClass()`
  This is a temporary workaround for an XMLVM Bug!
  `abstract int`
  `getImageHeight(Object i)`
  Returns the height of a native image
  `ImageIO`
  `getImageIO()`
  Returns the image IO instance that allows scaling image files.
  `abstract int`
  `getImageWidth(Object i)`
  Returns the width of a native image
  `Purchase`
  `getInAppPurchase()`
  Returns the native OS purchase implementation if applicable, if not this method will fallback to a cross platform purchase manager.
  `Dimension`
  `getInitialWindowSizeHintPercent()`
  Returns the optional desktop window size hint provided by the first form.
  `int`
  `getInvisibleAreaUnderVKB()`
  Returns the height of the VKB when it is open for an implementation that requires us to allow scrolling further
  `int`
  `getKeyboardType()`
  Returns the type of the input device one of: KEYBOARD_TYPE_UNKNOWN, KEYBOARD_TYPE_NUMERIC, KEYBOARD_TYPE_QWERTY, KEYBOARD_TYPE_VIRTUAL, KEYBOARD_TYPE_HALF_QWERTY
  `abstract int`
  `getKeyCode(int gameAction)`
  Returns a keycode which can be sent to getGameAction
  `float`
  `getLargerTextScale()`
  Returns a scale factor representing how much larger system fonts should be.
  `String`
  `getLineSeparator()`
  `String[]`
  `getLinkedContactIds(Contact c)`
  Gets the IDs of all contacts that are linked to the provided contact.
  `abstract L10NManager`
  `getLocalizationManager()`
  Gets the localization manager instance for this implementation.
  `LocationManager`
  `getLocationManager()`
  This method returns the platform Location Control
  `String`
  `getMsisdn()`
  Returns the MSISDN for devices that expose it
  `abstract Object`
  `getNativeGraphics()`
  Returns the native graphics object on which all rendering operations occur
  `abstract Object`
  `getNativeGraphics(Object image)`
  Returns the native graphics object on the given native image occur
  `Transition`
  `getNativeTransition(Transition t)`
  This method allows a native implementation to implement a native version of a given transition that can be faster
  `final NetworkTypePlatform`
  `getNetworkTypePlatform()`
  `Nfc`
  `getNfc()`
  Returns the port-specific NFC entry point.
  `static Class`
  `getObjectArrayClass()`
  This is a temporary workaround for an XMLVM Bug!
  `protected String`
  `getPackageName()`
  Returns the package name for the application
  `Object`
  `getPasteDataFromClipboard()`
  Returns the current content of the clipboard
  `abstract String`
  `getPlatformName()`
  Returns a 2-3 letter code representing the platform name for the platform override
  `String[]`
  `getPlatformOverrides()`
  Returns the suffixes for ovr files that should be used when loading a layered resource file on this platform
  `int`
  `getPreferredBackgroundFetchInterval()`
  Gets the preferred time (in seconds) between background fetches.
  `Map<String,String>`
  `getProjectBuildHints()`
  Returns the build hints for the simulator, this will only work in the debug environment and it's designed to allow extensions/API's to verify user settings/build hints exist
  `String`
  `getProperty(String key, String defaultValue)`
  Returns the property from the underlying platform deployment or the default value if no deployment values are supported.
  `static PurchaseCallback`
  `getPurchaseCallback()`
  Returns the purchase callback instance
  `int`
  `getRenderingHints(Object nativeGraphics)`
  Gets the rendering hints for this graphics context
  `InputStream`
  `getResourceAsStream(Class cls, String resource)`
  This method is essentially equivalent to cls.getResourceAsStream(String) however some platforms might define unique ways in which to load resources within the implementation.
  `abstract int`
  `getResponseCode(Object connection)`
  Returns the server response code for the request
  `abstract String`
  `getResponseMessage(Object connection)`
  Returns the server response message for the request
  `abstract void`
  `getRGB(Object nativeImage, int[] arr, int offset, int x, int y, int width, int height)`
  Extracts RGB data from the given native image and places it in the given array
  `abstract long`
  `getRootAvailableSpace(String root)`
  Returns the available space in the given root directory
  `abstract long`
  `getRootSizeBytes(String root)`
  Returns the size of the given root directory
  `int`
  `getRootType(String root)`
  Returns the type of the root often by guessing
  `SecureStorage`
  `getSecureStorage()`
  Returns the port-specific biometric-gated secure storage.
  `final BrowserComponent`
  `getSharedJavscriptContext()`
  Gets a reference to an application-wide shared Javascript context that can be used for running Javascript commands.
  `int`
  `getSize(Object nativeFont)`
  Optional operation returning the font size for system fonts
  `int`
  `getSMSSupport()`
  Indicates the level of SMS support in the platform as one of: SMS_NOT_SUPPORTED (for desktop, tablet etc.), SMS_SEAMLESS (no UI interaction), SMS_INTERACTIVE (with compose UI), SMS_BOTH.
  `int`
  `getSocketAvailableInput(Object socket)`
  Returns whether data is available for input on the socket
  `int`
  `getSocketErrorCode(Object socket)`
  Returns the pending error code on the given socket
  `String`
  `getSocketErrorMessage(Object socket)`
  Return the pending error message on the given socket
  `abstract int[]`
  `getSoftkeyCode(int index)`
  Returns the softkey keycode for the given softkey index
  `abstract int`
  `getSoftkeyCount()`
  Returns the number of softkeys on the device
  `String[]`
  `getSSLCertificates(Object connection, String url)`
  Gets the SSL certificates for a connection
  `String`
  `getStackTrace(Thread parentThread, Throwable t)`
  Returns the stack trace from the exception on the given thread.
  `Object`
  `getStorageData()`
  The storage data is used by some storage implementations (e.g. CDC) to place the storage object in a "proper" location matching the application name.
  `int`
  `getStorageEntrySize(String name)`
  Returns the size of the entry in bytes
  `static Class`
  `getStringArray2DClass()`
  This is a temporary workaround for an XMLVM Bug!
  `static Class`
  `getStringArrayClass()`
  This is a temporary workaround for an XMLVM Bug!
  `int`
  `getStyle(Object nativeFont)`
  Optional operation returning the font style for system fonts
  `Object`
  `getSVGDocument(Object svgImage)`
  Returns a platform specific DOM object that can be manipulated by the user to change the SVG Image
  `Transform`
  `getTransform(Object graphics)`
  Gets the current transformation matrix.
  `void`
  `getTransform(Object nativeGraphics, Transform t)`
  Sets the given transform to the current transform in the given graphics object.
  `int`
  `getTranslateX(Object graphics)`
  Returns the current x translate value
  `int`
  `getTranslateY(Object graphics)`
  Returns the current y translate value
  `String`
  `getUdid()`
  Returns the UDID for devices that support it
  `String`
  `getURLDomain(String url)`
  Returns the domain for the given URL
  `String`
  `getURLPath(String url)`
  `final UsbPlatform`
  `getUsbPlatform()`
  `final WifiDirectPlatform`
  `getWifiDirectPlatform()`
  `final WifiPlatform`
  `getWifiPlatform()`
  `Rectangle`
  `getWindowBounds()`
  Returns the bounds of the application window when running on a desktop platform.
  `boolean`
  `handleEDTException(Throwable err)`
  Invoked when an exception occurs on the EDT, allows the implementation to take control of the device to produce testing information.
  `boolean`
  `hasCachesDir()`
  Returns true if the device has a directory dedicated for "cache" files
  `boolean`
  `hasCamera()`
  Returns true if the device has camera false otherwise.
  `protected boolean`
  `hasDragStarted(int[] x, int[] y)`
  This method can be overriden by subclasses to indicate whether a drag event has started or whether the device is just sending out "noise".
  `protected boolean`
  `hasDragStarted(int x, int y)`
  This method can be overriden by subclasses to indicate whether a drag event has started or whether the device is just sending out "noise".
  `boolean`
  `hasNativeTheme()`
  Indicates if the implemenetation has a native underlying theme
  `boolean`
  `hasPendingPaints()`
  Returns true if the implementation still has elements to paint.
  `void`
  `hideNativeOverlay(Component cmp, Object nativeOverlay)`
  Hides the native overlay for a component.
  `protected void`
  `hideNotify()`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `void`
  `hideTextEditor()`
  In case of scrolling we can hide the text editor unless the user starts typing again, this is only relevant for the async mode...
  `abstract void`
  `init(Object m)`
  Invoked by the display init method allowing the implementation to "bind"
  `protected void`
  `initDefaultUserAgent()`
  Some old platforms might need this but for modern platforms the user agent should "just work".
  `void`
  `initEDT()`
  Some implementations might need to perform initializations of the EDT thread
  `void`
  `initHeavyButton(Object peer)`
  Initializes a heavy button.
  `void`
  `initializeTextSelection(TextSelection aThis)`
  Initializes text selection.
  `final void`
  `initImpl(Object m)`
  Invoked by the display init method allowing the implementation to "bind"
  `void`
  `installBuiltinSound(String soundIdentifier, InputStream data)`
  Installs a replacement sound as the builtin sound responsible for the given sound identifier (this will override the system sound if such a sound exists).
  `boolean`
  `installMessageListener(Object browserComponent)`
  Installs a message listener to allow webpages inside a browser component to send messages to CN1 cross-domain.
  `void`
  `installNativeTheme()`
  Installs the native theme, this is only applicable if hasNativeTheme() returned true.
  `void`
  `installTar()`
  Installs a tar file from the build server into the file system storage so it can be used with respect for hierarchy
  `boolean`
  `instanceofByteArray(Object o)`
  Workaround for XMLVM bug
  `boolean`
  `instanceofDoubleArray(Object o)`
  Workaround for XMLVM bug
  `boolean`
  `instanceofFloatArray(Object o)`
  Workaround for XMLVM bug
  `boolean`
  `instanceofIntArray(Object o)`
  Workaround for XMLVM bug
  `boolean`
  `instanceofLongArray(Object o)`
  Workaround for XMLVM bug
  `boolean`
  `instanceofObjArray(Object o)`
  Workaround for XMLVM bug
  `boolean`
  `instanceofShortArray(Object o)`
  Workaround for XMLVM bug
  `boolean`
  `isAffineSupported()`
  Indicates whether the underlying implementation can draw using an affine transform hence methods such as rotate, scale and shear would work
  `boolean`
  `isAlphaGlobal()`
  Returns true if alpha can be applied for all elements globally and efficiently otherwise alpha should be ignored.
  `boolean`
  `isAlphaMutableImageSupported()`
  Indicates whether mutable images respect alpha values when constructed
  `boolean`
  `isAltGraphKeyDown()`
  Checks whether the altgraph key is currently down.
  `boolean`
  `isAltKeyDown()`
  Checks whether the alt key is currently down.
  `boolean`
  `isAnimation(Object nativeImage)`
  Animations should return true to allow the native image animation to update
  `boolean`
  `isAntiAliased(Object graphics)`
  Returns anti-aliasing mode for regular rendering operations
  `boolean`
  `isAntiAliasedText(Object graphics)`
  Returns anti-aliasing mode for font rendering operations
  `boolean`
  `isAntiAliasedTextSupported()`
  Indicates whether the underlying implementation allows for anti-aliased fonts
  `boolean`
  `isAntiAliasedTextSupported(Object graphics)`
  `boolean`
  `isAntiAliasingSupported()`
  Indicates whether the underlying implementation allows for anti-aliasing in regular drawing operations
  `boolean`
  `isAntiAliasingSupported(Object graphics)`
  `boolean`
  `isAPSupported()`
  Indicates whether looking up an access point is supported by this device
  `boolean`
  `isAsyncEditMode()`
  Returns true if edit string will return immediately and broadcast editing events directly to the text field
  `boolean`
  `isBackgroundFetchSupported()`
  Checks to see if the current platform supports background fetch.
  `boolean`
  `isBackgroundProcessingSupported()`
  Returns true if the platform supports deferrable background processing tasks.
  `boolean`
  `isBackgroundWorkSupported()`
  Returns true if the platform supports constraint-aware background work.
  `boolean`
  `isBadgingSupported()`
  Returns true if the underlying OS supports numeric badges on icons.
  `boolean`
  `isBaselineTextSupported()`
  Checks whether the implementation supports drawing text on the baseline.
  `boolean`
  `isBidiAlgorithm()`
  Indicates whether Codename One should consider the bidi RTL algorithm when drawing text or navigating with the text field cursor.
  `boolean`
  `isBuiltinSoundAvailable(String soundIdentifier)`
  Indicates whether a user installed or system sound is available
  `boolean`
  `isBuiltinSoundsEnabled()`
  Allows muting/unmuting the builtin sounds easily
  `boolean`
  `isCallDetectionSupported()`
  Indicates whether this platform can attempt to detect when an active phone call is interrupting the app.
  `boolean`
  `isClickTouchScreen()`
  Indicates whether the device has a double layer screen thus allowing two stages to touch events: click and hover.
  `boolean`
  `isContactsPermissionGranted()`
  Some platforms allow the user to block contacts access on a per application basis (specifically iOS).
  `boolean`
  `isControlKeyDown()`
  Checks whether the control key is currently down.
  `Boolean`
  `isDarkMode()`
  Returns true if the platform is in dark mode, null is returned for unknown status
  `boolean`
  `isDatabaseCustomPathSupported()`
  Checks if this platform supports custom database paths.
  `boolean`
  `isDesktop()`
  Returns true if this is a desktop application
  `abstract boolean`
  `isDirectory(String file)`
  Indicates whether the given file is a directory
  `boolean`
  `isDrawShadowFast()`
  Checks to see if drawing shadows on this platform is hardware accelerated.
  `boolean`
  `isDrawShadowSupported()`
  Checks to see if drawing shadows is supported on this platform.
  `boolean`
  `isEditingText()`
  Returns true if we are currently editing a component
  `boolean`
  `isEditingText(Component c)`
  Returns true if we are currently editing this component
  `boolean`
  `isForegroundServiceSupported()`
  Returns true if the platform supports foreground services.
  `boolean`
  `isFullScreenSupported()`
  Checks if the platform supports full-screen mode.
  `boolean`
  `isGalleryTypeSupported(int type)`
  Checks if the given gallery type is supported on this platform.
  `boolean`
  `isGaussianBlurSupported()`
  `boolean`
  `isGetAllContactsFast()`
  Indicates if the getAllContacts is platform optimized, notice that the method might still take seconds or more to run so you should still use a separate thread!
  `abstract boolean`
  `isHidden(String file)`
  Indicates the hidden state of the file
  `boolean`
  `isInCall()`
  Best-effort check for whether the platform believes a phone call is active.
  `boolean`
  `isInFullScreenMode()`
  Checks to see if the app is currently running in full-screen mode.
  `boolean`
  `isInitialized()`
  Returns true if the implementation is initialized.
  `boolean`
  `isJailbrokenDevice()`
  Returns true if this device is jailbroken or rooted, false if not or unknown.
  `boolean`
  `isLargerTextEnabled()`
  Returns true if the user has selected larger type fonts in the system settings.
  `protected boolean`
  `isLogged()`
  Indicates whether logging is turned on
  `boolean`
  `isLookupFontSupported()`
  Indicates whether loading a font by a string is supported by the platform
  `boolean`
  `isMetaKeyDown()`
  Checks whether the meta key is currently down.
  `boolean`
  `isMinimized()`
  Indicates whether an application is minimized
  `boolean`
  `isMultiTouch()`
  Indicates whether the device supports multi-touch events, this is only relevant when touch events are supported
  `boolean`
  `isNativeBrowserComponentSupported()`
  An implementation can return true if it supports embedding a native browser widget
  `boolean`
  `isNativeCookieSharingSupported()`
  Checks if this platform supports sharing cookies between Native components (e.g. BrowserComponent) and ConnectionRequests.
  `boolean`
  `isNativeEditorVisible(Component c)`
  Checks whether the native text editor is currently visible over top of the given component (usually a `TextArea`
  `boolean`
  `isNativeFontSchemeSupported()`
  Indicates whether the implementation supports loading a font "natively" to handle one of the common native prefixes
  `boolean`
  `isNativeIndexed()`
  Returns true if indexed images should be used natively
  `boolean`
  `isNativeInputImmediate()`
  Indicates whether the device should switch to native input immediately on first touch
  `boolean`
  `isNativeInputSupported()`
  Indicates whether the device supports native in place editing in which case lightweight input logic shouldn't be used for input.
  `boolean`
  `isNativePickerTypeSupported(int pickerType)`
  Indicates whether the native picker dialog is supported for the given type which can include one of PICKER_TYPE_DATE_AND_TIME, PICKER_TYPE_TIME, PICKER_TYPE_DATE
  `boolean`
  `isNativeShareSupported()`
  Indicates if the underlying platform supports sharing capabilities
  `boolean`
  `isNativeTitle()`
  Indicates if the title of the Form is native title(in android ICS devices if the command behavior is native the ActionBar is used to display the title and the menu)
  `boolean`
  `isNativeVideoPlayerControlsIncluded()`
  Indicates if the native video player includes its own play/pause etc.
  `boolean`
  `isNotificationSupported()`
  Indicates whether the notify status bar method will present a notification to the user
  `boolean`
  `isOpaque(Image codenameOneImage, Object nativeImage)`
  Returns true if the image was opaque
  `boolean`
  `isOpenNativeNavigationAppSupported()`
  Returns true if the underlying OS supports opening the native navigation application
  `boolean`
  `isPerspectiveTransformSupported()`
  Checks of the Transform class can be used on this platform to perform perspective transforms.
  `boolean`
  `isPerspectiveTransformSupported(Object graphics)`
  Checks if 3d/perspective transformations are supported in the provided graphics context.
  `boolean`
  `isPortrait()`
  Returns true if the device is currently in portrait mode
  `boolean`
  `isPrintingSupported()`
  Indicates if the underlying platform can print documents through `print(String,String,PrintResultListener)`.
  `boolean`
  `isReadTimeoutSupported()`
  Checks if this platform supports read timeout in network connections.
  `boolean`
  `isReceiveSharedContentSupported()`
  Returns true if the platform can receive shared content from other apps.
  `boolean`
  `isRightMouseButtonDown()`
  Checks if last mouse press was a right click.
  `boolean`
  `isRotationDrawingSupported()`
  Indicates whether drawImageRotated is supported by the platform for FAST drawing, if not then its not worth calling the method which will be unimplemented!
  `boolean`
  `isRTL(char c)`
  Returns true if the given character is an RTL character
  `boolean`
  `isRTLOrWhitespace(char c)`
  Returns true if the given character is an RTL character or a space character
  `boolean`
  `isScaledImageDrawingSupported()`
  Indicates if image scaling on the fly is supported by the platform, if not Codename One will just scale the images on its own before drawing
  `boolean`
  `isScreenLockSupported()`
  Checks if the device supports locking the screen display from dimming, allowing the developer to keep the screen display on.
  `boolean`
  `isScrollWheeling()`
  `boolean`
  `isServerSocketAvailable()`
  Indicates whether the underlying implementation supports server sockets
  `boolean`
  `isSetCursorSupported()`
  Checks if this platform supports custom cursors.
  `boolean`
  `isShapeClipSupported(Object graphics)`
  Checks if clipping shapes is supported by the provided graphics context.
  `boolean`
  `isShapeSupported(Object graphics)`
  Checks if drawing shapes is supported by the provided graphics context.
  `boolean`
  `isShiftKeyDown()`
  Checks whether the shift key is currently down.
  `boolean`
  `isSimulator()`
  Allows detecting development mode so debugging code and special cases can be used to simplify flow
  `boolean`
  `isSocketAvailable()`
  Indicates whether the underlying implementation supports sockets
  `boolean`
  `isSocketConnected(Object socket)`
  Indicates whether the socket is currently connected
  `boolean`
  `isSoundPoolSupported()`
  Indicates whether this platform provides a native low latency sound pool (backing `com.codename1.gaming.SoundPool`).
  `boolean`
  `isSVGSupported()`
  Indicates whether the underlying platform supports creating an SVG Image
  `boolean`
  `isTablet()`
  Indicates whether the device is a tablet, notice that this is often a guess
  `boolean`
  `isThirdSoftButton()`
  Indicates the default status to apply to the 3rd softbutton variable
  `boolean`
  `isTimeoutSupported()`
  Indicates whether the underlying implementation supports the notion of a network operation timeout.
  `abstract boolean`
  `isTouchDevice()`
  Returns true if the device will send touch events
  `boolean`
  `isTransformSupported()`
  Checks if the Transform class can be used on this platform.
  `boolean`
  `isTransformSupported(Object graphics)`
  Checks if matrix transformations are supported in the provided graphics context.
  `boolean`
  `isTranslateMatrixSupported()`
  Indicates whether the underlying implementation composes `g.translateMatrix(float, float)` onto the impl-side transform matrix.
  `boolean`
  `isTranslationSupported()`
  Codename One can translate all coordinates and never requires a call to translate this works well for some devices which have hairy issues with translate.
  `boolean`
  `isTrueTypeSupported()`
  Returns true if the system supports dynamically loading truetype fonts from a file.
  `boolean`
  `isURLWithCustomHeadersSupported()`
  Returns true if setBrowserURL with custom headers is supported
  `boolean`
  `isUseNativeCookieStore()`
  Uses the native cookie store if applicable, this might break simulator compatibility
  `boolean`
  `isVPNActive()`
  Best-effort check for whether a VPN appears to be active.
  `boolean`
  `isVPNDetectionSupported()`
  Indicates whether this platform can attempt to detect active VPN usage.
  `boolean`
  `isWalletExtensionSupported()`
  Returns true if the platform supports publishing data to a Wallet issuer-provisioning extension (iOS only).
  `boolean`
  `isWatch()`
  Indicates whether the application is running on a smartwatch form factor (Apple Watch / Wear OS).
  `boolean`
  `isWebSocketSupported()`
  Indicates whether the underlying implementation supports the `WebSocket` API.
  `protected void`
  `keyPressed(int keyCode)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `keyReleased(int keyCode)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `Object`
  `listenSocket(int port)`
  Listens on the given port similar to the accept method of server socket in Java.
  `abstract String[]`
  `listFiles(String directory)`
  Lists the files within the given directory, returns relative file names and not full file names.
  `abstract String[]`
  `listFilesystemRoots()`
  Returns the filesystem roots from which the structure of the file system can be traversed
  `abstract String[]`
  `listStorageEntries()`
  Lists the names of the storage files
  `Object`
  `loadNativeFont(String lookup)`
  Loads a native font based on a lookup for a font name and attributes.
  `Object`
  `loadTrueTypeFont(String fontName, String fileName)`
  Creates a true type font with the given name/filename (font name might be different from the file name and is required by some devices e.g. iOS).
  `void`
  `lockOrientation(boolean portrait)`
  On devices that return true for canForceOrientation() this method can lock the device orientation either to portrait or landscape mode
  `void`
  `lockScreen()`
  If Locking isScreenLockSupported() returns true calling this method will lock the screen display on
  `protected void`
  `log(String content)`
  Dispatch the message to the logger
  `void`
  `logStreamClose(String name, boolean isInput, int count)`
  Logs the closing of a stream
  `void`
  `logStreamCreate(String name, boolean isInput, int count)`
  Logs the creation of a stream
  `void`
  `logStreamDoubleClose(String name, boolean isInput)`
  Logs the closing of a stream
  `Object`
  `makeTransformAffine(double m00, double m10, double m01, double m11, double m02, double m12)`
  Makes a transform given the specified AffineTransform values.
  `Object`
  `makeTransformCamera(float eyeX, float eyeY, float eyeZ, float centerX, float centerY, float centerZ, float upX, float upY, float upZ)`
  Makes a transform to simulate a camera's perspective at a given location.
  `Object`
  `makeTransformIdentity()`
  Makes a new identity native transform.
  `Object`
  `makeTransformInverse(Object nativeTransform)`
  Gets the inverse transformation for the provided transform.
  `Object`
  `makeTransformOrtho(float left, float right, float bottom, float top, float near, float far)`
  Makes a new orthographic projection transform.
  `Object`
  `makeTransformPerspective(float fovy, float aspect, float zNear, float zFar)`
  Makes a new perspective transform.
  `Object`
  `makeTransformRotation(float angle, float x, float y, float z)`
  Makes a new native rotation transform.
  `Object`
  `makeTransformScale(float scaleX, float scaleY, float scaleZ)`
  Makes a new native scale transform.
  `Object`
  `makeTransformTranslation(float translateX, float translateY, float translateZ)`
  Makes a new native translation transform.
  `boolean`
  `minimizeApplication()`
  Minimizes the current application if minimization is supported by the platform (may fail).
  `void`
  `minimizeNativeWindow()`
  Minimizes the native desktop window when the application draws its own (custom mode) window chrome on an undecorated window.
  `abstract void`
  `mkdir(String directory)`
  Creates the given directory
  `void`
  `nativeBrowserWindowAddCloseListener(Object window, ActionListener l)`
  Adds close listener to native browser window.
  `void`
  `nativeBrowserWindowCleanup(Object window)`
  Cleans up and disposes of a native browser window.
  `void`
  `nativeBrowserWindowEval(Object window, BrowserWindow.EvalRequest req)`
  Evaluates javascript on native browser window.
  `void`
  `nativeBrowserWindowHide(Object window)`
  Hides a native browser window.
  `void`
  `nativeBrowserWindowRemoveCloseListener(Object window, ActionListener l)`
  Removes close listener from native browser window.
  `void`
  `nativeBrowserWindowSetSize(Object window, int width, int height)`
  Sets the size of a native browser window.
  `void`
  `nativeBrowserWindowSetTitle(Object window, String title)`
  Sets the window title of a native browser window.
  `void`
  `nativeBrowserWindowShow(Object window)`
  Shows a native browser window.
  `boolean`
  `nativeEditorPaintsHint()`
  `void`
  `nothingWithinComponentPaint(Component c)`
  Indicates to the port that the component won't be painted due to clipping
  `void`
  `notifyCommandBehavior(int commandBehavior)`
  This method notifies the implementation about the chosen commands behavior
  `void`
  `notifyPushCompletion()`
  Notifies the platform that push notification processing is complete.
  `Object`
  `notifyStatusBar(String tickerText, String contentTitle, String contentBody, boolean vibrate, boolean flashLights, Hashtable args)`
  Place a notification on the device status bar (if device has this functionality).
  `int`
  `numAlphaLevels()`
  Return the number of alpha levels supported by the implementation.
  `int`
  `numColors()`
  Returns the number of colors applicable on the device, note that the API does not support gray scale devices.
  `void`
  `onCanInstallOnHomescreen(Runnable r)`
  A callback fired when you are allowed to prompt the user to install the app on their homescreen.
  `void`
  `onShow(Form f)`
  Callback before showing a specific form
  `InputStream`
  `openFileInputStream(String file)`
  Returns an input stream for the given connection
  `OutputStream`
  `openFileOutputStream(String file)`
  Returns an output stream for the given file
  `void`
  `openGallery(ActionListener response, int type)`
  Opens the device gallery The method returns immediately and the response will be sent asynchronously to the given ActionListener Object
  `void`
  `openImageGallery(ActionListener response)`
  Opens the device image gallery
  `abstract InputStream`
  `openInputStream(Object connection)`
  Returns an input stream for the given connection
  `void`
  `openNativeNavigationApp(double latitude, double longitude)`
  Opens the native navigation app in the given coordinate.
  `void`
  `openNativeNavigationApp(String location)`
  Opens the native navigation app with the given search location
  `Database`
  `openOrCreateDB(String databaseName)`
  Opens a database or create one if not exists
  `abstract OutputStream`
  `openOutputStream(Object connection)`
  Returns an output stream for the given connection
  `abstract OutputStream`
  `openOutputStream(Object connection, int offset)`
  Returns an output stream for the given connection
  `void`
  `paintComponentBackground(Object nativeGraphics, int x, int y, int width, int height, Style s)`
  Paints the background of a component based on the style values on the given graphics context, the style could be accessed from the drawing thread in read only capacity to make the code slightly more efficient
  `void`
  `paintDirty()`
  Invoked by the EDT to paint the dirty regions
  `boolean`
  `paintNativePeersBehind()`
  A flag that can be overridden by a platform to indicate that native peers are rendered behind the main codename one graphics layer.
  `protected void`
  `paintOverlay(Graphics g)`
  Allows for painting an overlay on top of the implementation for notices during testing etc.
  `boolean`
  `platformUsesInputMode()`
  Checks to see if this is a platform that uses the `TextField#setInputMode(java.lang.String)`.
  `void`
  `playBuiltinSound(String soundIdentifier)`
  Plays a builtin device sound matching the given identifier, implementations and themes can offer additional identifiers to the ones that are already built in.
  `void`
  `playDialogSound(int type)`
  Invoked when a dialog is shown, this method allows a dialog to play a sound
  `protected void`
  `playNativeBuiltinSound(Object data)`
  This method allows implementations to store sound objects natively e.g.
  `protected void`
  `playUserSound(String soundIdentifier)`
  Plays a sound defined by the user
  `protected void`
  `pointerDragged(int[] x, int[] y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerDragged(int x, int y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerHover(int[] x, int[] y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerHover(int x, int y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerHoverPressed(int[] x, int[] y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerHoverPressed(int x, int y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerHoverReleased(int[] x, int[] y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerHoverReleased(int x, int y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerPressed(int[] x, int[] y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerPressed(int x, int y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerReleased(int[] x, int[] y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `pointerReleased(int x, int y)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `void`
  `pointerWheelMoved(int x, int y, int scrollX, int scrollY)`
  Maps a physical scroll-wheel / trackpad scroll into a Codename One scroll gesture.
  `void`
  `popClip(Object graphics)`
  Pops the clip from the top of the clip stack and sets it as the current clip.
  `void`
  `postInit()`
  Callback allowing the implementation to perform an operation on the init thread after initialization was completed
  `void`
  `postMessage(MessageEvent message)`
  Posts a message to the native platform.
  `boolean`
  `postMessage(Object browserComponent, String message, String targetOrigin)`
  Posts a message to the window in a BrowserComponent.
  `void`
  `print(String filePath, String mimeType, PrintResultListener listener)`
  Print a document file through the platform printing system, typically showing the native print dialog.
  `void`
  `printStackTraceToStream(Throwable t, Writer o)`
  Allows the logger to print the stack trace into the log when the native platform supports that
  `boolean`
  `promptInstallOnHomescreen()`
  Prompts the user to install this app on their homescreen.
  `void`
  `pushClip(Object graphics)`
  Pushes the current clip onto the clip stack so that it can be retrieved later by `#popClip`.
  `protected final void`
  `pushReceived(String data)`
  `byte[]`
  `readFromSocketStream(Object socket)`
  Read pending bytes from the socket
  `void`
  `refreshContacts()`
  Clears the addressbook cache.
  `void`
  `refreshNativeTitle()`
  if the title is native(e.g the android action bar), notify the native title that is needs to be refreshed
  `void`
  `registerNotificationChannel(NotificationChannelBuilder builder)`
  Registers a notification channel.
  `protected static void`
  `registerPollingFallback()`
  Registers a polling thread to simulate push notification
  `void`
  `registerPush(Hashtable metaData, boolean noFallback)`
  User register to receive push notification
  `static void`
  `registerPushOnServer(String id, String applicationKey, byte pushType, String udid, String packageName)`
  Sends a server request to register push support.
  `static boolean`
  `registerServerPush(String id, String applicationKey, byte pushType, String udid, String packageName)`
  Sends a server request to register push support.
  `void`
  `releaseImage(Object image)`
  Allows buggy implementations (Android) to release image objects
  `void`
  `removeCompletionHandler(Media media, Runnable onCompletion)`
  Removes onComplete callback from Media element.
  `protected final void`
  `removeCookiesForDomain(String domain)`
  `void`
  `removeHeavyActionListener(Object peer, ActionListener l)`
  Removes a heavy action listener from a heavy button.
  `void`
  `removeNativeBrowserWindowOnLoadListener(Object window, ActionListener l)`
  Removes a load listener from a native browser window.
  `abstract void`
  `rename(String file, String newName)`
  Renames a file to the given name, expects the new name to be relative to the current directory
  `void`
  `repaint(Animation cmp)`
  Invoked to add an element to the paintQueue
  `protected final void`
  `repaintTextEditor(boolean focus)`
  Allows the implementation to refresh the text field
  `boolean`
  `requestFullScreen()`
  Attempt to enter full-screen mode.
  `void`
  `requestNotificationPermission(NotificationPermissionRequest request, NotificationPermissionCallback callback)`
  Requests permission to post notifications.
  `boolean`
  `requiresHeavyButtonForCopyToClipboard()`
  Checks whether the current platform requires a heavy button for copy to clipboard functionality to work.
  `void`
  `resetAffine(Object nativeGraphics)`
  Resets the affine transform to the default value
  `void`
  `restoreMinimizedApplication()`
  Restore the minimized application if minimization is supported by the platform
  `void`
  `rotate(Object nativeGraphics, float angle)`
  Rotates the coordinate system around a radian angle using the affine transform
  `void`
  `rotate(Object nativeGraphics, float angle, int pivotX, int pivotY)`
  Rotates the coordinate system around a radian angle using the affine transform
  `Object`
  `rotate(Object image, int degrees)`
  Returns an instance of this image rotated by the given number of degrees.
  `Image`
  `rotate180Degrees(Image image, boolean maintainOpacity)`
  Rotates the given image by 180 degrees
  `Image`
  `rotate270Degrees(Image image, boolean maintainOpacity)`
  Rotates the given image by 270 degrees while changing the ratio of the picture
  `Image`
  `rotate90Degrees(Image image, boolean maintainOpacity)`
  Rotates the given image by 90 degrees while changing the ratio of the picture
  `byte[]`
  `rsaDecrypt(String transformation, byte[] privateKeyPkcs8, byte[] ciphertext)`
  Decrypts with RSA using a PKCS#8 DER-encoded private key.
  `byte[]`
  `rsaEncrypt(String transformation, byte[] publicKeyX509, byte[] plaintext)`
  Encrypts with RSA using an X.509 (SubjectPublicKeyInfo) DER-encoded public key.
  `void`
  `saveTextEditingState()`
  Invoked if Codename One needs to dispose the native text editing but would like the editor to store its state.
  `void`
  `scale(Object nativeGraphics, float x, float y)`
  Scales the coordinate system using the affine transform
  `abstract Object`
  `scale(Object nativeImage, int width, int height)`
  Scales a native image and returns the scaled version
  `void`
  `scalePoints(int pointSize, float sX, float sY, float sZ, float[] in, int srcPos, float[] out, int destPos, int numPoints)`
  Scales a set of points.
  `void`
  `scheduleBackgroundProcessing(String id, long earliestBeginEpochMs, boolean requiresNetwork, boolean requiresPower, Runnable task)`
  Schedules a deferrable background processing task.
  `void`
  `scheduleBackgroundWork(WorkRequest request)`
  Schedules constraint-aware background work.
  `void`
  `scheduleLocalNotification(LocalNotification notif, long firstTime, int repeat)`
  `void`
  `screenshot(SuccessCallback<Image> callback)`
  Tries to grab an OS native screenshot which would include peer components etc.
  `void`
  `secureRandomBytes(byte[] out)`
  Fills `out` with cryptographically secure random bytes.
  `void`
  `sendMessage(String[] recipients, String subject, Message msg)`
  Send an email using the platform mail client
  `protected void`
  `sendPushRegistrationError(String message, int errorCode)`
  Allows implementations to send an error to the push callback
  `protected final void`
  `sendRegisteredForPush(String id)`
  `void`
  `sendSMS(String phoneNumber, String message, boolean interactive)`
  Sends a SMS message to the given phone number
  `abstract void`
  `setAlpha(Object graphics, int alpha)`
  Alpha value from 0-255 can be ignored for some operations
  `void`
  `setAntiAliased(Object graphics, boolean a)`
  Toggles anti-aliasing mode for regular rendering operations
  `void`
  `setAntiAliasedText(Object graphics, boolean a)`
  Toggles anti-aliasing mode for font rendering operations
  `void`
  `setAppArg(String arg)`
  `void`
  `setBadgeNumber(int number)`
  Sets the number that appears on the application icon in iOS
  `void`
  `setBidiAlgorithm(boolean activate)`
  Indicates whether Codename One should consider the bidi RTL algorithm when drawing text or navigating with the text field cursor.
  `void`
  `setBrowserPage(PeerComponent browserPeer, String html, String baseUrl)`
  Shows the given HTML in the native viewer
  `void`
  `setBrowserPageInHierarchy(PeerComponent browserPeer, String url)`
  Sets a relative URL from the html hierarchy
  `void`
  `setBrowserProperty(PeerComponent browserPeer, String key, Object value)`
  This method allows customizing the properties of a web view in various ways including platform specific settings.
  `void`
  `setBrowserURL(PeerComponent browserPeer, String url)`
  Sets the page URL, jar: URL's must be supported by the implementation
  `void`
  `setBrowserURL(PeerComponent browserPeer, String url, Map<String,String> headers)`
  Sets the page URL, jar: URL's must be supported by the implementation
  `void`
  `setBuiltinSoundsEnabled(boolean enabled)`
  Allows muting/unmuting the builtin sounds easily
  `void`
  `setChunkedStreamingMode(Object connection, int bufferLen)`
  This method is used to enable streaming of a HTTP request body without internal buffering, when the content length is not known in advance.
  `abstract void`
  `setClip(Object graphics, int x, int y, int width, int height)`
  Installs a new clipping rectangle
  `void`
  `setClip(Object graphics, Shape shape)`
  Clips the Graphics context to the Shape.
  `void`
  `setClipRect(Object graphics, Rectangle rect)`
  Installs a new clipping rectangle
  `void`
  `setCodenameOneGraphics(Graphics g)`
  Installs the Codename One graphics object into the implementation
  `abstract void`
  `setColor(Object graphics, int rgb)`
  Sets the current rgb color while ignoring any potential alpha component within said color value.
  `void`
  `setCommandBehavior(int commandBehavior)`
  Indicates the way commands should be added to a form as one of the ocmmand constants defined in this class
  `void`
  `setConnectionId(Object connection, int id)`
  `void`
  `setCurrentAccessPoint(String id)`
  Returns the id of the current access point
  `static void`
  `setCurrentApplicationInstance(Object app)`
  Stores the running application's main class instance so the implementation can dispatch lifecycle style callbacks (such as shared content delivery) to it.
  `void`
  `setCurrentForm(Form f)`
  This method is used internally to determine the actual current form it doesn't perform the logic of transitions etc.
  `void`
  `setDisableScreenshots(boolean disable)`
  Enables/disables screenshot blocking behavior where supported by the platform.
  `void`
  `setDisplayLock(Object lock)`
  Installs the display lock allowing implementors to synchronize against the Display mutex, this method is invoked internally and should not be used.
  `void`
  `setDragStartPercentage(int dragStartPercentage)`
  This method allows us to manipulate the drag started detection logic.
  `void`
  `setFocusedEditingText(Component cmp)`
  Sets current editingText value and sets it focused.
  `abstract void`
  `setHeader(Object connection, String key, String val)`
  Indicates the HTTP header value for an HTTP connection
  `abstract void`
  `setHidden(String file, boolean h)`
  Toggles the hidden state of the file
  `void`
  `setHttpMethod(Object connection, String method)`
  Requests special http method such as put or delete
  `void`
  `setImageName(Object nativeImage, String name)`
  Allows for easier debugging of native implementations by setting the image name to the native image object
  `void`
  `setInitialWindowSizeHintPercent(Dimension hint)`
  Stores an optional window size hint (in percent values) for desktop environments.
  `void`
  `setInsecure(Object connection, boolean insecure)`
  Sets connection to be insecure.
  `void`
  `setLogListener(ActionListener al)`
  This method is useful strictly for debugging, the logger can use it to track file opening/closing thus detecting potential file resource leaks that can cause serious problems in some OS's.
  `void`
  `setNativeBrowserScrollingEnabled(PeerComponent browserPeer, boolean e)`
  Allows disabling the browsers native scrolling on devices that support it
  `void`
  `setNativeCommands(Vector commands)`
  Places the following commands on the native menu system
  `abstract void`
  `setNativeFont(Object graphics, Object font)`
  Installs a native font object
  `static void`
  `setOnCurrentFormChange(Runnable on)`
  Set a task to be executed every time the current form changes (e.g. on navigation).
  `static void`
  `setOnExit(Runnable on)`
  Set a task to be executed once the implementation is being destroyed
  `void`
  `setPinchToZoomEnabled(PeerComponent browserPeer, boolean e)`
  Some platforms require that you enable pinch to zoom explicitly.
  `void`
  `setPlatformHint(String key, String value)`
  Makes it easier to pass hints to the underlying implementation for quicker hacks/pipelines
  `void`
  `setPollingFrequency(int freq)`
  Sets the frequency for polling the server in case of polling based push notification
  `abstract void`
  `setPostRequest(Object connection, boolean p)`
  Indicates the whether the request method is GET or POST
  `void`
  `setPreferredBackgroundFetchInterval(int seconds)`
  Sets the preferred time interval between background fetches.
  `void`
  `setProjectBuildHint(String key, String value)`
  Sets a build hint into the settings while overwriting any previous value.
  `static void`
  `setPurchaseCallback(PurchaseCallback pc)`
  Allows the system to register the purchase callback instance
  `static void`
  `setPushCallback(PushCallback push)`
  Allows the system to register to receive push callbacks
  `void`
  `setReadTimeout(Object connection, int readTimeout)`
  Sets the read timeout of a connection.
  `void`
  `setRenderingHints(Object nativeGraphics, int hints)`
  Sets the rendering hints for a graphics context.
  `void`
  `setStorageData(Object storageData)`
  The storage data is used by some storage implementations (e.g. CDC) to place the storage object in a "proper" location matching the application name.
  `void`
  `setThreadPriority(Thread t, int p)`
  Allows an implementation to modify setting thread priority, some implementations don't handle thread priorities well
  `void`
  `setTimeout(int t)`
  This will work only if http timeout is supported
  `void`
  `setTransform(Object graphics, Transform transform)`
  Sets the transformation matrix to be applied to all drawing operations.
  `void`
  `setTransformAffine(Object nativeTransform, double m00, double m10, double m01, double m11, double m02, double m12)`
  Sets transform to the given specified AffineTransform values.
  `void`
  `setTransformCamera(Object nativeTransform, float eyeX, float eyeY, float eyeZ, float centerX, float centerY, float centerZ, float upX, float upY, float upZ)`
  `void`
  `setTransformIdentity(Object transform)`
  Sets the given native transform to the identiy transform
  `void`
  `setTransformInverse(Object nativeTransform)`
  `void`
  `setTransformOrtho(Object nativeTransform, float left, float right, float bottom, float top, float near, float far)`
  `void`
  `setTransformPerspective(Object nativeTransform, float fovy, float aspect, float zNear, float zFar)`
  `void`
  `setTransformRotation(Object nativeTransform, float angle, float x, float y, float z)`
  `void`
  `setTransformScale(Object nativeTransform, float scaleX, float scaleY, float scaleZ)`
  `void`
  `setTransformTranslation(Object nativeTransform, float translateX, float translateY, float translateZ)`
  `void`
  `setUseNativeCookieStore(boolean useNativeCookieStore)`
  Uses the native cookie store if applicable, this might break simulator compatibility
  `void`
  `setWindowSize(int width, int height)`
  Requests a resize of the application window when supported by the platform.
  `void`
  `share(String text, String image, String mimeType)`
  Share the required information using the platform sharing services.
  `void`
  `share(String text, String image, String mimeType, Rectangle sourceRect)`
  Share the required information using the platform sharing services.
  `void`
  `share(String text, String image, String mimeType, Rectangle sourceRect, ShareResultListener listener)`
  Share variant that delivers an outcome through `listener`.
  `void`
  `shear(Object nativeGraphics, float x, float y)`
  Shear the graphics coordinate system using the affine transform
  `boolean`
  `shouldAutoDetectAccessPoint()`
  This callback allows highly broken devices like the blackberry to automatically detect the network type
  `boolean`
  `shouldPaintBackground()`
  Indicates the implementation is capable of keeping the background painted by being non-destructive.
  `boolean`
  `shouldWriteUTFAsGetBytes()`
  For some reason the standard code for writing UTF8 output in a server request doesn't work as expected on SE/CDC stacks.
  `Object`
  `showNativePicker(int type, Component source, Object currentValue, Object data)`
  Shows a native modal dialog allowing us to perform the picking for the given type which can include one of PICKER_TYPE_DATE_AND_TIME, PICKER_TYPE_TIME, PICKER_TYPE_DATE
  `void`
  `showNativeScreen(Object nativeFullScreenPeer)`
  Shows a native Form/Canvas or some other heavyweight native screen
  `protected void`
  `showNotify()`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `protected void`
  `sizeChanged(int w, int h)`
  Subclasses should invoke this method, it delegates the event to the display and into Codename One.
  `boolean`
  `speechRecognitionIsSupported()`
  `void`
  `splitString(String source, char separator, ArrayList<String> out)`
  `Object`
  `startForegroundService(String channelId, String title, String body, String iconName, ForegroundService.Task task, ForegroundService handle)`
  Starts a foreground service.
  `void`
  `startNativeWindowDrag(int x, int y)`
  Begins dragging the native desktop window (custom mode title bar).
  `void`
  `startRemoteControl()`
  Starts the remote control service.
  `void`
  `startSpeechRecognition(RecognitionOptions options, RecognitionCallback callback)`
  `void`
  `startThread(String name, Runnable r)`
  Some devices need more elaborate thread creation logic e.g.
  `void`
  `stopForegroundService(Object nativeHandle)`
  Stops a running foreground service.
  `protected static void`
  `stopPolling()`
  Stops the polling push loop
  `void`
  `stopRemoteControl()`
  Stops the remote control service.
  `void`
  `stopSpeechRecognition()`
  `void`
  `stopTextEditing()`
  Invoked for special cases to stop text editing and clear native editing state
  `void`
  `stopTextEditing(Runnable onFinish)`
  Invoked for special cases to stop text editing and clear native editing state
  `abstract boolean`
  `storageFileExists(String name)`
  Returns true if the given storage file exists
  `abstract int`
  `stringWidth(Object nativeFont, String str)`
  Return the width of the given string in this font instance
  `void`
  `subscribeToPushTopic(String topic)`
  Subscribes the device to a push topic.
  `boolean`
  `supportsBrowserExecuteAndReturnString(PeerComponent internal)`
  `boolean`
  `supportsNativeImageCache()`
  Returns true if the platform supports a native image cache.
  `boolean`
  `supportsNativeTextAreaVerticalAlignment()`
  Checks whether the platform's native text areas support vertical alignment.
  `void`
  `systemOut(String content)`
  System print
  `String[]`
  `textToSpeechAvailableVoices()`
  `boolean`
  `textToSpeechIsSupported()`
  `void`
  `textToSpeechSpeak(String text, TtsOptions options)`
  `void`
  `textToSpeechStop()`
  `void`
  `tileImage(Object graphics, Object img, int x, int y, int w, int h)`
  Allows an implementation to optimize image tiling rendering logic
  `void`
  `toggleMaximizeNativeWindow()`
  Toggles the maximized state of the native desktop window when the application draws its own (custom mode) window chrome.
  `String`
  `toNativePath(String path)`
  Converts a FileSystemStorage path to a native path.
  `boolean`
  `transformEqualsImpl(Transform t1, Transform t2)`
  `boolean`
  `transformNativeEqualsImpl(Object t1, Object t2)`
  `void`
  `transformPoint(Object nativeTransform, float[] in, float[] out)`
  Transforms a point and stores the result in a provided array.
  `void`
  `transformPoints(Object nativeTransform, int pointSize, float[] in, int srcPos, float[] out, int destPos, int numPoints)`
  Transforms a set of points using the provided transform.
  `void`
  `transformRotate(Object nativeTransform, float angle, float x, float y, float z)`
  Rotates the provided transform.
  `void`
  `transformScale(Object nativeTransform, float x, float y, float z)`
  Scales the provided transform by the provide scale factors.
  `void`
  `transformTranslate(Object nativeTransform, float x, float y, float z)`
  Translates the transform by the specified amounts.
  `void`
  `translate(Object graphics, int x, int y)`
  Translates the X/Y location for drawing on the underlying surface.
  `void`
  `translateMatrix(Object nativeGraphics, float x, float y)`
  Composes a translation onto the impl-side transform matrix -- the matrix-correct counterpart of `Graphics.translate(int, int)`.
  `void`
  `translatePoints(int pointSize, float tX, float tY, float tZ, float[] in, int srcPos, float[] out, int destPos, int numPoints)`
  Translates a set of points.
  `boolean`
  `uninstallMessageListener(Object browserComponent)`
  Uninstalls a message listener to allow webpages inside a browser component to send messages to CN1 cross-domain.
  `void`
  `unlockOrientation()`
  This is the reverse method for lock orientation allowing orientation lock to be disabled
  `void`
  `unlockScreen()`
  Unlock the screen display allowing the screen to dim.
  `void`
  `unsubscribeFromPushTopic(String topic)`
  Unsubscribes the device from a push topic.
  `void`
  `updateForegroundServiceNotification(Object nativeHandle, String title, String body)`
  Updates the notification of a running foreground service.
  `void`
  `updateHeavyButtonBounds(Object peer, int x, int y, int width, int height)`
  Updates the bounds of the native heavy button to match the bounds of the lightweight button.
  `void`
  `updateNativeEditorText(Component c, String text)`
  Called when TextArea text is changed.
  `void`
  `updateNativeOverlay(Component cmp, Object nativeOverlay)`
  Updates the native overlay after the component has been repositioned.
  `boolean`
  `usesInvokeAndBlockForEditString()`
  Using invokeAndBlock inside EditString creates peculiar behaviour that needs to be worked around.
  `void`
  `vibrate(int duration)`
  Vibrates the device for the given length of time
  `void`
  `walletExtensionAddPassEntry(boolean remote, String identifier, String title, String cardholderName, String accountSuffix, String network, String description, byte[] artPng)`
  Appends one pass entry to the published Wallet extension list.
  `void`
  `walletExtensionClear()`
  Clears all published Wallet extension data.
  `void`
  `walletExtensionClearPassEntries(boolean remote)`
  Removes all published Wallet extension pass entries from one of the two lists.
  `void`
  `walletExtensionSetAuthToken(String token)`
  Publishes the Wallet extension auth token, or removes it when null.
  `void`
  `walletExtensionSetRequiresAuthentication(boolean requiresAuthentication)`
  Sets the Wallet extension requires-authentication flag.
  `void`
  `writeToSocketStream(Object socket, byte[] data)`
  Write the following byte array to the socket
  `void`
  `writeToSocketStream(Object socket, byte[] data, int offset, int len)`
  Write a range of the given byte array to the socket.

  ### Methods inherited from class Object

  `clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Constructor Details

  - ### CodenameOneImplementation

    public CodenameOneImplementation()

- ## Method Details

  - ### setOnCurrentFormChange

    public static void setOnCurrentFormChange(Runnable on)
    Set a task to be executed every time the current form changes (e.g. on navigation). Used by the advertising layer to show interstitials on transitions; see `AdManager.bindInterstitialOnTransition(InterstitialAd, int)`.

  - ### setOnExit

    public static void setOnExit(Runnable on)
    Set a task to be executed once the implementation is being destroyed

  - ### setCurrentApplicationInstance

    public static void setCurrentApplicationInstance(Object app)

    Stores the running application's main class instance so the implementation can dispatch lifecycle style callbacks (such as shared content delivery) to it. Set by the platform port when it bootstraps the application.

    ###### Parameters

    - `app`: the application main class instance

  - ### getCurrentApplicationInstance

    public static Object getCurrentApplicationInstance()

    Returns the running application's main class instance, or null if it has not been captured.

    ###### Returns

    the application main class instance, or null

  - ### setPushCallback

    public static void setPushCallback(PushCallback push)

    Allows the system to register to receive push callbacks

    ###### Parameters

    - `push`: the callback object

  - ### getPurchaseCallback

    public static PurchaseCallback getPurchaseCallback()
    Returns the purchase callback instance

  - ### setPurchaseCallback

    public static void setPurchaseCallback(PurchaseCallback pc)

    Allows the system to register the purchase callback instance

    ###### Parameters

    - `pc`: the pc callback

  - ### getStringArrayClass

    public static Class getStringArrayClass()
    This is a temporary workaround for an XMLVM Bug!

  - ### getStringArray2DClass

    public static Class getStringArray2DClass()
    This is a temporary workaround for an XMLVM Bug!

  - ### getImageArrayClass

    public static Class getImageArrayClass()
    This is a temporary workaround for an XMLVM Bug!

  - ### getObjectArrayClass

    public static Class getObjectArrayClass()
    This is a temporary workaround for an XMLVM Bug!

  - ### stopPolling

    protected static void stopPolling()
    Stops the polling push loop

  - ### getApplicationKey

    protected static String getApplicationKey()

    Returns the key for the application comprised of the builders email coupled with the package name. It should uniquely identify the application across different builds which allows interaction with the cloud.

    ###### Returns

    a unique string with the format builders_email/packagename

  - ### registerServerPush

    public static boolean registerServerPush(String id, String applicationKey, byte pushType, String udid, String packageName)

    Sends a server request to register push support. This is a method for use by implementations.

    ###### Parameters

    - `id`: the platform specific push ID

    - `applicationKey`: the unique id of the application

    - `pushType`: for server side type

    - `packageName`: the application package name used by the push service

    ###### Returns

    true for success, false otherwise

  - ### registerPushOnServer

    public static void registerPushOnServer(String id, String applicationKey, byte pushType, String udid, String packageName)

    Sends a server request to register push support. This is a method for use by implementations.

    ###### Parameters

    - `id`: the platform specific push ID

    - `applicationKey`: the unique id of the application

    - `pushType`: for server side type

    - `packageName`: the application package name used by the push service

  - ### deregisterPushFromServer

    public static void deregisterPushFromServer()
    For use by implementations, stop receiving push notifications from the server

  - ### registerPollingFallback

    protected static void registerPollingFallback()

    Registers a polling thread to simulate push notification

    ###### Deprecated

    this functionality is no longer supported

  - ### initImpl

    public final void initImpl(Object m)

    Invoked by the display init method allowing the implementation to "bind"

    ###### Parameters

    - `m`: the object passed to the Display init method

  - ### isInitialized

    public boolean isInitialized()
    Returns true if the implementation is initialized.

  - ### sendPushRegistrationError

    protected void sendPushRegistrationError(String message, int errorCode)

    Allows implementations to send an error to the push callback

    ###### Parameters

    - `message`: the error message

    - `errorCode`: the error code

  - ### init

    public abstract void init(Object m)

    Invoked by the display init method allowing the implementation to "bind"

    ###### Parameters

    - `m`: the object passed to the Display init method

  - ### initEDT

    public void initEDT()
    Some implementations might need to perform initializations of the EDT thread

  - ### deinitialize

    public void deinitialize()
    Allows subclasses to cleanup if necessary

  - ### playDialogSound

    public void playDialogSound(int type)

    Invoked when a dialog is shown, this method allows a dialog to play a sound

    ###### Parameters

    - `type`: the type of the dialog matching the dialog classes defined types

  - ### vibrate

    public void vibrate(int duration)

    Vibrates the device for the given length of time

    ###### Parameters

    - `duration`: length of time to vibrate

  - ### flashBacklight

    public void flashBacklight(int duration)

    Flash the backlight of the device for the given length of time

    ###### Parameters

    - `duration`: length of time to flash the backlight

  - ### getDisplayWidth

    public abstract int getDisplayWidth()

    Returns the width dimension of the display controlled by this implementation

    ###### Returns

    the width

  - ### getDisplayHeight

    public abstract int getDisplayHeight()

    Returns the height dimension of the display controlled by this implementation

    ###### Returns

    the height

  - ### getActualDisplayHeight

    public int getActualDisplayHeight()

    Returns the display height ignoring manipulations performed by the VKB

    ###### Returns

    the height

  - ### getDesktopSize

    public Dimension getDesktopSize()

    Returns the size of the desktop area hosting the application window when running on a desktop platform. Implementations that do not support windows may return `null`.

    ###### Returns

    the desktop size or `null`

  - ### getWindowBounds

    public Rectangle getWindowBounds()

    Returns the bounds of the application window when running on a desktop platform.

    ###### Returns

    the window bounds, defaults to the current display size

  - ### setWindowSize

    public void setWindowSize(int width, int height)

    Requests a resize of the application window when supported by the platform.

    ###### Parameters

    - `width`: the desired window width in pixels

    - `height`: the desired window height in pixels

  - ### getInitialWindowSizeHintPercent

    public Dimension getInitialWindowSizeHintPercent()

    Returns the optional desktop window size hint provided by the first form.

    ###### Returns

    the stored hint or `null`

  - ### setInitialWindowSizeHintPercent

    public void setInitialWindowSizeHintPercent(Dimension hint)

    Stores an optional window size hint (in percent values) for desktop environments. Implementations that do not support windows may ignore this value.

    ###### Parameters

    - `hint`: @param hint a `Dimension` whose width/height represent percentages of the desktop to use for the initial window size, or `null` to clear a previously stored hint

  - ### handleEDTException

    public boolean handleEDTException(Throwable err)

    Invoked when an exception occurs on the EDT, allows the implementation to take control of the device to produce testing information.

    ###### Parameters

    - `err`: the exception that was caught in the EDT loop

    ###### Returns

    Returns:
      false by default, true if the exception shouldn't be handled further by the EDT

  - ### editStringImpl

    public final void editStringImpl(Component cmp, int maxSize, int constraint, String text, int initiatingKeycode)

    Encapsulates the editing code which is specific to the platform, some platforms would allow "in place editing" MIDP does not.

    ###### Parameters

    - `cmp`: the `TextArea` component

    - `maxSize`: the maximum size from the text area

    - `constraint`: the constraints of the text area

    - `text`: the string to edit

    - `initiatingKeycode`: the keycode used to initiate the edit.

  - ### setFocusedEditingText

    public void setFocusedEditingText(Component cmp)
    Sets current editingText value and sets it focused. NB! it not call editString, that is it should be called only internally and actually the methdo should not be added :)

  - ### stopTextEditing

    public void stopTextEditing()
    Invoked for special cases to stop text editing and clear native editing state

  - ### stopTextEditing

    public void stopTextEditing(Runnable onFinish)
    Invoked for special cases to stop text editing and clear native editing state

  - ### usesInvokeAndBlockForEditString

    public boolean usesInvokeAndBlockForEditString()
    Using invokeAndBlock inside EditString creates peculiar behaviour that needs to be worked around. Ideally no port should use invokeAndBlock for this but currently JavaSE and UWP both do. Need to be able to detect this for workarounds.

  - ### editString

    public abstract void editString(Component cmp, int maxSize, int constraint, String text, int initiatingKeycode)

    Encapsulates the editing code which is specific to the platform, some platforms would allow "in place editing" MIDP does not.

    ###### Parameters

    - `cmp`: the `TextArea` component

    - `maxSize`: the maximum size from the text area

    - `constraint`: the constraints of the text area

    - `text`: the string to edit

    - `initiatingKeycode`: the keycode used to initiate the edit.

  - ### nativeEditorPaintsHint

    public boolean nativeEditorPaintsHint()

  - ### isEditingText

    public boolean isEditingText()

    Returns true if we are currently editing a component

    ###### Returns

    whether a component is being edited

  - ### platformUsesInputMode

    public boolean platformUsesInputMode()
    Checks to see if this is a platform that uses the `TextField#setInputMode(java.lang.String)`.

  - ### isNativeEditorVisible

    public boolean isNativeEditorVisible(Component c)

    Checks whether the native text editor is currently visible over top of the given component (usually a `TextArea`

    ###### Parameters

    - `c`: The textarea/component we are checking

    ###### Returns

    True if the native editor is visible.

  - ### updateNativeEditorText

    public void updateNativeEditorText(Component c, String text)

    Called when TextArea text is changed. Can be used by the native implementation to trigger an update to the native editor if in async edit mode.

    ###### Parameters

    - `c`: The TextArea that is being edited.

    - `text`

  - ### hideTextEditor

    public void hideTextEditor()
    In case of scrolling we can hide the text editor unless the user starts typing again, this is only relevant for the async mode...

  - ### getAppArg

    public String getAppArg()

  - ### setAppArg

    public void setAppArg(String arg)

  - ### repaintTextEditor

    protected final void repaintTextEditor(boolean focus)
    Allows the implementation to refresh the text field

  - ### isEditingText

    public boolean isEditingText(Component c)

    Returns true if we are currently editing this component

    ###### Returns

    whether a component is being edited

  - ### getEditingText

    public Component getEditingText()
    Gets the component that is currently editing text

  - ### isAsyncEditMode

    public boolean isAsyncEditMode()

    Returns true if edit string will return immediately and broadcast editing events directly to the text field

    ###### Returns

    false by default

  - ### getInvisibleAreaUnderVKB

    public int getInvisibleAreaUnderVKB()

    Returns the height of the VKB when it is open for an implementation that requires us to allow scrolling further

    ###### Returns

    height in pixels

  - ### saveTextEditingState

    public void saveTextEditingState()
    Invoked if Codename One needs to dispose the native text editing but would like the editor to store its state.

  - ### hasPendingPaints

    public boolean hasPendingPaints()

    Returns true if the implementation still has elements to paint.

    ###### Returns

    false by default

  - ### numAlphaLevels

    public int numAlphaLevels()

    Return the number of alpha levels supported by the implementation.

    ###### Returns

    the number of alpha levels supported by the implementation

    ###### Deprecated

    this method isn't implemented in most modern devices

  - ### numColors

    public int numColors()

    Returns the number of colors applicable on the device, note that the API does not support gray scale devices.

    ###### Returns

    the number of colors applicable on the device

    ###### Deprecated

    this method isn't implemented in most modern devices

  - ### getComponentScreenGraphics

    public Graphics getComponentScreenGraphics(Component cmp, Graphics currentContext)

    This method allows customizing/creating a graphics context per component which is useful for some elaborate implementations of Codename One. This method is only relevant for elborate components such as container which render their own components rather than invoke repaint()

    ###### Parameters

    - `cmp`: component being rendered

    - `currentContext`: the current graphics context

    ###### Returns

    a graphics object thats appropriate for the given component.

  - ### paintOverlay

    protected void paintOverlay(Graphics g)

    Allows for painting an overlay on top of the implementation for notices during testing etc.

    ###### Parameters

    - `g`: graphics context on which to draw the overlay

  - ### paintDirty

    public void paintDirty()
    Invoked by the EDT to paint the dirty regions

  - ### edtIdle

    public void edtIdle(boolean enter)

    This method is a callback from the edt before the edt enters to an idle state

    ###### Parameters

    - `enter`: @param enter true before the edt sleeps and false when exits from the idle state

  - ### flushGraphics

    public abstract void flushGraphics(int x, int y, int width, int height)

    Flush the currently painted drawing onto the screen if using a double buffer

    ###### Parameters

    - `x`: position of the dirty region

    - `y`: position of the dirty region

    - `width`: width of the dirty region

    - `height`: height of the dirty region

  - ### flushGraphics

    public abstract void flushGraphics()
    Flush the currently painted drawing onto the screen if using a double buffer

  - ### getCodenameOneGraphics

    protected Graphics getCodenameOneGraphics()

    Returns a graphics object for use by the painting

    ###### Returns

    Returns:
      a graphics object, either recycled or new, this object will be used on the EDT

  - ### setCodenameOneGraphics

    public void setCodenameOneGraphics(Graphics g)

    Installs the Codename One graphics object into the implementation

    ###### Parameters

    - `g`: graphics object for use by the implementation

  - ### paintNativePeersBehind

    public boolean paintNativePeersBehind()
    A flag that can be overridden by a platform to indicate that native peers are rendered behind the main codename one graphics layer. The main effect of this is that Graphics will call clearRect() any time a native component is "painted" to poke a hole through the CN1 layer.

  - ### setDisplayLock

    public void setDisplayLock(Object lock)

    Installs the display lock allowing implementors to synchronize against the Display mutex, this method is invoked internally and should not be used.

    ###### Parameters

    - `lock`: the mutex from display

  - ### cancelRepaint

    public void cancelRepaint(Animation cmp)

    Removes an entry from the paint queue if it exists, this is important for cases in which a component was repainted and immediately removed from its parent container afterwards. This happens sometimes in cases where a replace() operation changes a component to a new component that has an animation() the animation might have triggered a repaint before the removeComponent method was invoked

    ###### Parameters

    - `cmp`: the component to

  - ### repaint

    public void repaint(Animation cmp)

    Invoked to add an element to the paintQueue

    ###### Parameters

    - `cmp`: component or animation to push into the paint queue

  - ### getRGB

    public abstract void getRGB(Object nativeImage, int[] arr, int offset, int x, int y, int width, int height)

    Extracts RGB data from the given native image and places it in the given array

    ###### Parameters

    - `nativeImage`: native platform image object

    - `arr`: int array to store RGB data

    - `offset`: position within the array to start

    - `x`: x position within the image

    - `y`: y position within the image

    - `width`: width to extract

    - `height`: height to extract

  - ### createImage

    public abstract Object createImage(int[] rgb, int width, int height)

    Create a platform native image object from the given RGB data

    ###### Parameters

    - `rgb`: ARGB data from which to create a platform image

    - `width`: width for the resulting image

    - `height`: height for the resulting image

    ###### Returns

    platform image object

  - ### createImage

    public abstract Object createImage(String path) throws IOException

    Creates a native image from a file in the system jar or file system storage.

    ###### Parameters

    - `path`: If path begins with file: this will load a file from FileSystemStorage. Otherwise it will load from jar.

    ###### Returns

    native system image

    ###### Throws

    - `java.io.IOException`: if thrown by loading
    Throws:
      `IOException`

  - ### createImage

    public abstract Object createImage(InputStream i) throws IOException

    Creates a native image from a given input stream

    ###### Parameters

    - `i`: input stream from which to load the image

    ###### Returns

    native system image

    ###### Throws

    - `java.io.IOException`: if thrown by loading
    Throws:
      `IOException`

  - ### createMutableImage

    public abstract Object createMutableImage(int width, int height, int fillColor)

    Creates a modifable native image that can return a graphics object

    ###### Parameters

    - `width`: the width of the mutable image

    - `height`: the height of the mutable image

    - `fillColor`: @param fillColor the ARGB fill color, alpha may be ignored based on the value of isAlphaMutableImageSupported

    ###### Returns

    the native image

  - ### isAlphaMutableImageSupported

    public boolean isAlphaMutableImageSupported()

    Indicates whether mutable images respect alpha values when constructed

    ###### Returns

    true if mutable images can have an alpha value when initially created

  - ### createImage

    public abstract Object createImage(byte[] bytes, int offset, int len)

    Create a nativate image from its compressed byte data

    ###### Parameters

    - `bytes`: the byte array representing the image data

    - `offset`: offset within the byte array

    - `len`: the length for the image within the byte array

    ###### Returns

    a native image

  - ### getImageWidth

    public abstract int getImageWidth(Object i)

    Returns the width of a native image

    ###### Parameters

    - `i`: the native image

    ###### Returns

    the width of the native image

  - ### getImageHeight

    public abstract int getImageHeight(Object i)

    Returns the height of a native image

    ###### Parameters

    - `i`: the native image

    ###### Returns

    the height of the native image

  - ### scale

    public abstract Object scale(Object nativeImage, int width, int height)

    Scales a native image and returns the scaled version

    ###### Parameters

    - `nativeImage`: image to scale

    - `width`: width of the resulting image

    - `height`: height of the resulting image

    ###### Returns

    scaled image instance

  - ### rotate

    public Object rotate(Object image, int degrees)

    Returns an instance of this image rotated by the given number of degrees. By default 90 degree angle divisions are supported, anything else is implementation dependent. This method assumes a square image. Notice that it is inefficient in the current implementation to rotate to non-square angles,

    E.g. rotating an image to 45, 90 and 135 degrees is inefficient. Use rotatate to 45, 90 and then rotate the 45 to another 90 degrees to achieve the same effect with less memory.

    ###### Parameters

    - `degrees`: A degree in right angle must be larger than 0 and up to 359 degrees

    ###### Returns

    new image instance with the closest possible rotation

  - ### rotate90Degrees

    public Image rotate90Degrees(Image image, boolean maintainOpacity)

    Rotates the given image by 90 degrees while changing the ratio of the picture

    ###### Parameters

    - `image`: the image

    - `maintainOpacity`: whether the opacity in the image should be maintained

    ###### Returns

    a new image rotated by 90 degrees

  - ### rotate180Degrees

    public Image rotate180Degrees(Image image, boolean maintainOpacity)

    Rotates the given image by 180 degrees

    ###### Parameters

    - `image`: the image

    - `maintainOpacity`: whether the opacity in the image should be maintained

    ###### Returns

    a new image rotated by 180 degrees

  - ### rotate270Degrees

    public Image rotate270Degrees(Image image, boolean maintainOpacity)

    Rotates the given image by 270 degrees while changing the ratio of the picture

    ###### Parameters

    - `image`: the image

    - `maintainOpacity`: whether the opacity in the image should be maintained

    ###### Returns

    a new image rotated by 270 degrees

  - ### flipImageHorizontally

    public Image flipImageHorizontally(Image image, boolean maintainOpacity)

    Flips the given image on the horizontal axis

    ###### Parameters

    - `image`: the image

    - `maintainOpacity`: whether the opacity in the image should be maintained

    ###### Returns

    a new image flipped

  - ### flipImageVertically

    public Image flipImageVertically(Image image, boolean maintainOpacity)

    Flips the given image on the vertical axis

    ###### Parameters

    - `image`: the image

    - `maintainOpacity`: whether the opacity in the image should be maintained

    ###### Returns

    a new image flipped

  - ### screenshot

    public void screenshot(SuccessCallback<Image> callback)

    Tries to grab an OS native screenshot which would include peer components etc. On fallback draws the current Form object.

    ###### Parameters

    - `callback`: invoked with the screenshot

  - ### notifyPushCompletion

    public void notifyPushCompletion()
    Notifies the platform that push notification processing is complete.

  - ### supportsNativeImageCache

    public boolean supportsNativeImageCache()

    Returns true if the platform supports a native image cache. The native image cache is different than just `FileSystemStorage#hasCachesDir()`. A native image cache is an image cache that the platform provides that is full transparent to Codename One with respect to how images are stored, and whether they are cached. Currently only the Javascript port supprts a native image cache.

    This is used by `java.lang.String, com.codename1.ui.Image, int)` to determine if it should use a cached image, or to defer to its storage and filesystem methods.

    ###### Returns

    True on platforms that support a native image cache. Currently only Javascript.

    ###### See also

    - Display#supportsNativeImageCache()

  - ### downloadImageToCache

    public void downloadImageToCache(String url, SuccessCallback<Image> onSuccess, FailureCallback<Image> onFail)

    Downloads an image from a URL to the cache. Platforms that support a native image cache `#supportsNativeImageCache()` (e.g. Javascript) override this method to defer to the platform's handling of cached images. Platforms that have a caches directory (`FileSystemStorage#hasCachesDir()` will use that directory to cache the image. Other platforms will just download to storage.

    ###### Parameters

    - `url`: The URL of the image to download.

    - `onSuccess`: Callback on success.

    - `onFail`: Callback on fail.

    ###### See also

    - URLImage#createToCache(com.codename1.ui.EncodedImage, java.lang.String, com.codename1.ui.URLImage.ImageAdapter)

  - ### downloadImageToStorage

    public void downloadImageToStorage(String url, String fileName, SuccessCallback<Image> onSuccess, FailureCallback<Image> onFail)

    Downloads an image to storage. This will not first check to see if the image is located in storage already. It will download and overwrite any existing image at the provided location.

    Some platforms may override this method to use platform-level caching. E.g. Javascript will use the browser cache for downloading the image.

    ###### Parameters

    - `url`: The URL of the image to download.

    - `fileName`: The storage key to be used to store the image.

    - `onSuccess`: Callback on success. Will be executed on EDT.

    - `onFail`: Callback on failure. Will be executed on EDT.

  - ### downloadImageToFileSystem

    public void downloadImageToFileSystem(String url, String fileName, SuccessCallback<Image> onSuccess, FailureCallback<Image> onFail)

    Downloads an image to file system. This will not first check to see if the file exists already. It will download and overwrite any existing image at the provided location.

    Some platforms may override this method to use platform-level caching. E.g. Javascript will use the browser cache for downloading the image.

    ###### Parameters

    - `url`: The URL of the image to download.

    - `fileName`: The storage key to be used to store the image.

    - `onSuccess`: Callback on success. Will be executed on EDT.

    - `onFail`: Callback on failure. Will be executed on EDT.

  - ### getSoftkeyCount

    public abstract int getSoftkeyCount()

    Returns the number of softkeys on the device

    ###### Returns

    the number of softkey buttons on the device

  - ### getSoftkeyCode

    public abstract int[] getSoftkeyCode(int index)

    Returns the softkey keycode for the given softkey index

    ###### Parameters

    - `index`: the index of the softkey

    ###### Returns

    Returns:
      the set of keycodes which can indicate the softkey, multiple keycodes might apply to the same functionality

  - ### getClearKeyCode

    public abstract int getClearKeyCode()

    Returns the keycode for the clear key

    ###### Returns

    the system key code for this device

  - ### getBackspaceKeyCode

    public abstract int getBackspaceKeyCode()

    Returns the keycode for the backspace key

    ###### Returns

    the system key code for this device

  - ### getBackKeyCode

    public abstract int getBackKeyCode()

    Returns the keycode for the back key

    ###### Returns

    the system key code for this device

  - ### getGameAction

    public abstract int getGameAction(int keyCode)

    Returns the display game action for the given keyCode if applicable to match the contrct of Codename One for the game action behavior

    ###### Parameters

    - `keyCode`: the device keycode

    ###### Returns

    a game action or 0

  - ### getKeyCode

    public abstract int getKeyCode(int gameAction)

    Returns a keycode which can be sent to getGameAction

    ###### Parameters

    - `gameAction`: the game action

    ###### Returns

    key code matching the given game action

  - ### isTouchDevice

    public abstract boolean isTouchDevice()

    Returns true if the device will send touch events

    ###### Returns

    true if the device will send touch events

  - ### onShow

    public void onShow(Form f)

    Callback before showing a specific form

    ###### Parameters

    - `f`: the form shown

  - ### confirmControlView

    public void confirmControlView()
    Callback method allowing the implementation to confirm that it controls the view just before a new form is installed.

  - ### getCurrentForm

    public Form getCurrentForm()

    Returns the current form, this method is for internal use only and does not take transitions/menus into consideration

    ###### Returns

    The internal current form

  - ### setCurrentForm

    public void setCurrentForm(Form f)

    This method is used internally to determine the actual current form it doesn't perform the logic of transitions etc. and shouldn't be invoked by developers

    ###### Parameters

    - `f`: the current form

  - ### isTranslationSupported

    public boolean isTranslationSupported()

    Codename One can translate all coordinates and never requires a call to translate this works well for some devices which have hairy issues with translate. However for some platforms where translate can be leveraged with affine transforms this can be a problem. These platforms can choose to translate on their own

    ###### Returns

    Returns:
      true if the implementation is interested in receiving translate calls and handling them.

  - ### speechRecognitionIsSupported

    public boolean speechRecognitionIsSupported()

  - ### startSpeechRecognition

    public void startSpeechRecognition(RecognitionOptions options, RecognitionCallback callback)

  - ### stopSpeechRecognition

    public void stopSpeechRecognition()

  - ### textToSpeechIsSupported

    public boolean textToSpeechIsSupported()

  - ### textToSpeechSpeak

    public void textToSpeechSpeak(String text, TtsOptions options)

  - ### textToSpeechStop

    public void textToSpeechStop()

  - ### textToSpeechAvailableVoices

    public String[] textToSpeechAvailableVoices()

  - ### translate

    public void translate(Object graphics, int x, int y)

    Translates the X/Y location for drawing on the underlying surface. Translation is incremental so the new value will be added to the current translation and in order to reset translation we have to invoke `translate(-getTranslateX(), -getTranslateY())`

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate

    - `y`: the y coordinate

  - ### getTranslateX

    public int getTranslateX(Object graphics)

    Returns the current x translate value

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the current x translate value

  - ### getTranslateY

    public int getTranslateY(Object graphics)

    Returns the current y translate value

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the current y translate value

  - ### getColor

    public abstract int getColor(Object graphics)

    Returns the current color

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the RGB graphics color

  - ### setColor

    public abstract void setColor(Object graphics, int rgb)

    Sets the current rgb color while ignoring any potential alpha component within said color value.

    ###### Parameters

    - `graphics`: the graphics context

    - `rgb`: the RGB value for the color.

  - ### setAlpha

    public abstract void setAlpha(Object graphics, int alpha)

    Alpha value from 0-255 can be ignored for some operations

    ###### Parameters

    - `graphics`: the graphics context

    - `alpha`: the alpha channel

  - ### concatenateAlpha

    public final int concatenateAlpha(Object graphics, int alpha)

    Concatenates alpha value to current alpha.

    ###### Parameters

    - `graphics`: The graphics context

    - `alpha`: The alpha to concatenate.

    ###### Returns

    The previous alpha value.

  - ### getAlpha

    public abstract int getAlpha(Object graphics)

    Alpha value from 0-255 can be ignored for some operations

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the alpha channel

  - ### isAlphaGlobal

    public boolean isAlphaGlobal()

    Returns true if alpha can be applied for all elements globally and efficiently otherwise alpha should be ignored. Notice that fillRect MUST always support alpha regardless of the value of this variable!

    ###### Returns

    true if alpha support is natively implemented

  - ### isAntiAliasingSupported

    public boolean isAntiAliasingSupported()

    Indicates whether the underlying implementation allows for anti-aliasing in regular drawing operations

    ###### Returns

    false by default

  - ### isAntiAliasingSupported

    public boolean isAntiAliasingSupported(Object graphics)

  - ### isAntiAliasedTextSupported

    public boolean isAntiAliasedTextSupported()

    Indicates whether the underlying implementation allows for anti-aliased fonts

    ###### Returns

    false by default

  - ### isAntiAliasedTextSupported

    public boolean isAntiAliasedTextSupported(Object graphics)

  - ### setAntiAliased

    public void setAntiAliased(Object graphics, boolean a)

    Toggles anti-aliasing mode for regular rendering operations

    ###### Parameters

    - `graphics`: the graphics context

    - `a`: true to activate Anti-aliasing, false to disable it

  - ### isAntiAliased

    public boolean isAntiAliased(Object graphics)

    Returns anti-aliasing mode for regular rendering operations

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    true if Anti-aliasing is active, false otherwise

  - ### setAntiAliasedText

    public void setAntiAliasedText(Object graphics, boolean a)

    Toggles anti-aliasing mode for font rendering operations

    ###### Parameters

    - `graphics`: the graphics context

    - `a`: true to activate Anti-aliasing, false to disable it

  - ### isAntiAliasedText

    public boolean isAntiAliasedText(Object graphics)

    Returns anti-aliasing mode for font rendering operations

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    true if Anti-aliasing is active, false otherwise

  - ### setNativeFont

    public abstract void setNativeFont(Object graphics, Object font)

    Installs a native font object

    ###### Parameters

    - `graphics`: the graphics context

    - `font`: the native font object

  - ### getClipRect

    public Rectangle getClipRect(Object graphics)

    Returns the internal clipping rectangle. This method must create a new rectangle object to prevent corruption by modification.

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the clipping rectangle.

  - ### getClipX

    public abstract int getClipX(Object graphics)

    Returns the clipping coordinate

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the clipping coordinate

  - ### getClipY

    public abstract int getClipY(Object graphics)

    Returns the clipping coordinate

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the clipping coordinate

  - ### getClipWidth

    public abstract int getClipWidth(Object graphics)

    Returns the clipping coordinate

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the clipping coordinate

  - ### getClipHeight

    public abstract int getClipHeight(Object graphics)

    Returns the clipping coordinate

    ###### Parameters

    - `graphics`: the graphics context

    ###### Returns

    the clipping coordinate

  - ### setClipRect

    public void setClipRect(Object graphics, Rectangle rect)

    Installs a new clipping rectangle

    ###### Parameters

    - `graphics`: the graphics context

    - `rect`: rectangle representing the new clipping area

  - ### setClip

    public abstract void setClip(Object graphics, int x, int y, int width, int height)

    Installs a new clipping rectangle

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: coordinate

    - `y`: coordinate

    - `width`: size

    - `height`: size

    - `rect`: rectangle representing the new clipping area

  - ### setClip

    public void setClip(Object graphics, Shape shape)

    Clips the Graphics context to the Shape.

    ###### Parameters

    - `graphics`: the graphics context

    - `shape`: The shape to clip.

  - ### clipRect

    public void clipRect(Object graphics, Rectangle rect)

    Changes the current clipping rectangle to subset the current clipping with the given clipping.

    ###### Parameters

    - `graphics`: the graphics context

    - `rect`: rectangle representing the new clipping area

  - ### clipRect

    public abstract void clipRect(Object graphics, int x, int y, int width, int height)

    Changes the current clipping rectangle to subset the current clipping with the given clipping.

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: coordinate

    - `y`: coordinate

    - `width`: size

    - `height`: size

    - `rect`: rectangle representing the new clipping area

  - ### pushClip

    public void pushClip(Object graphics)

    Pushes the current clip onto the clip stack so that it can be retrieved later by `#popClip`.

    ###### Parameters

    - `graphics`: The native graphics context.

  - ### disposeGraphics

    public void disposeGraphics(Object graphics)

    Cleans up resources used by graphics object

    ###### Parameters

    - `graphics`

  - ### popClip

    public void popClip(Object graphics)

    Pops the clip from the top of the clip stack and sets it as the current clip.

    ###### Parameters

    - `graphics`: The native graphics context.

    ###### Returns

    The clip that was popped off the top of the clip stack.

  - ### drawLine

    public abstract void drawLine(Object graphics, int x1, int y1, int x2, int y2)

    Draws a line between the 2 X/Y coordinates

    ###### Parameters

    - `graphics`: the graphics context

    - `x1`: first x position

    - `y1`: first y position

    - `x2`: second x position

    - `y2`: second y position

  - ### fillRect

    public abstract void fillRect(Object graphics, int x, int y, int width, int height)

    Fills the rectangle from the given position according to the width/height minus 1 pixel according to the convention in Java.

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate of the rectangle to be filled.

    - `y`: the y coordinate of the rectangle to be filled.

    - `width`: the width of the rectangle to be filled.

    - `height`: the height of the rectangle to be filled.

  - ### clearRect

    public void clearRect(Object graphics, int x, int y, int width, int height)

  - ### drawRect

    public abstract void drawRect(Object graphics, int x, int y, int width, int height)

    Draws a rectangle in the given coordinates

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate of the rectangle to be drawn.

    - `y`: the y coordinate of the rectangle to be drawn.

    - `width`: the width of the rectangle to be drawn.

    - `height`: the height of the rectangle to be drawn.

  - ### drawRect

    public void drawRect(Object graphics, int x, int y, int width, int height, int thickness)

    Draws a rectangle in the given coordinates

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate of the rectangle to be drawn.

    - `y`: the y coordinate of the rectangle to be drawn.

    - `width`: the width of the rectangle to be drawn.

    - `height`: the height of the rectangle to be drawn.

    - `thickness`: the thickness in pixels

  - ### drawRoundRect

    public abstract void drawRoundRect(Object graphics, int x, int y, int width, int height, int arcWidth, int arcHeight)

    Draws a rounded corner rectangle in the given coordinates with the arcWidth/height matching the last two arguments respectively.

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate of the rectangle to be drawn.

    - `y`: the y coordinate of the rectangle to be drawn.

    - `width`: the width of the rectangle to be drawn.

    - `height`: the height of the rectangle to be drawn.

    - `arcWidth`: the horizontal diameter of the arc at the four corners.

    - `arcHeight`: the vertical diameter of the arc at the four corners.

  - ### fillRoundRect

    public abstract void fillRoundRect(Object graphics, int x, int y, int width, int height, int arcWidth, int arcHeight)

    Fills a rounded rectangle in the same way as drawRoundRect

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate of the rectangle to be filled.

    - `y`: the y coordinate of the rectangle to be filled.

    - `width`: the width of the rectangle to be filled.

    - `height`: the height of the rectangle to be filled.

    - `arcWidth`: the horizontal diameter of the arc at the four corners.

    - `arcHeight`: the vertical diameter of the arc at the four corners.

    ###### See also

    - #drawRoundRect

  - ### fillArc

    public abstract void fillArc(Object graphics, int x, int y, int width, int height, int startAngle, int arcAngle)

    Fills a circular or elliptical arc based on the given angles and bounding box. The resulting arc begins at startAngle and extends for arcAngle degrees.

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate of the upper-left corner of the arc to be filled.

    - `y`: the y coordinate of the upper-left corner of the arc to be filled.

    - `width`: the width of the arc to be filled.

    - `height`: the height of the arc to be filled.

    - `startAngle`: the beginning angle.

    - `arcAngle`: the angular extent of the arc, relative to the start angle.

  - ### drawArc

    public abstract void drawArc(Object graphics, int x, int y, int width, int height, int startAngle, int arcAngle)

    Draws a circular or elliptical arc based on the given angles and bounding box

    ###### Parameters

    - `graphics`: the graphics context

    - `x`: the x coordinate of the upper-left corner of the arc to be drawn.

    - `y`: the y coordinate of the upper-left corner of the arc to be drawn.

    - `width`: the width of the arc to be drawn.

    - `height`: the height of the arc to be drawn.

    - `startAngle`: the beginning angle.

    - `arcAngle`: the angular extent of the arc, relative to the start angle.

  - ### drawString

    public abstract void drawString(Object graphics, String str, int x, int y)

    Draw a string using the current font and color in the x,y coordinates. The font is drawn from the top position and not the baseline.

    ###### Parameters

    - `graphics`: the graphics context

    - `str`: the string to be drawn.

    - `x`: the x coordinate.

    - `y`: the y coordinate.

  - ### drawImage

    public abstract void drawImage(Object graphics, Object img, int x, int y)

    Draws the image so its top left coordinate corresponds to x/y

    ###### Parameters

    - `graphics`: the graphics context

    - `img`: the specified native image to be drawn

    - `x`: the x coordinate.

    - `y`: the y coordinate.

  - ### drawImage

    public void drawImage(Object graphics, Object img, int x, int y, int w, int h)

    Draws the image so its top left coordinate corresponds to x/y

    ###### Parameters

    - `graphics`: the graphics context

    - `img`: the specified native image to be drawn

    - `x`: the x coordinate.

    - `y`: the y coordinate.

    - `w`: the width

    - `h`: the height

  - ### createImage

    public Image createImage(Shape shape, Stroke stroke, int color)

  - ### drawShape

    public void drawShape(Object graphics, Shape shape, Stroke stroke)

    Draws outline of shape on the given graphics context.

    The last 4 parameters specify a bounding box for drawing the Shape. The shape's bounds will be made to fit this box exactly for drawing. This allows for resizing the shape on the GPU if graphics acceleration is supported.

    ###### Parameters

    - `graphics`: the graphics context

    - `shape`: the shape to draw.

    - `stroke`: The stroke to use for drawing the contour.

    ###### See also

    - #isShapeSupported(java.lang.Object) to determine of the graphics context supports drawing shapes.

  - ### fillShape

    public void fillShape(Object graphics, Shape shape)

    Fills the given shape in the specified graphics context using the graphics context's currently selected color and alpha.

    ###### Parameters

    - `graphics`

    - `shape`

    ###### See also

    - drawShape To learn what x, y, w, and h do.

  - ### drawShadow

    public void drawShadow(Object graphics, Object image, int x, int y, int offsetX, int offsetY, int blurRadius, int spreadRadius, int color, float opacity)

    Draws a drop shadow for an image onto the given graphics context.

    This is used for the elevation feature.

    Note: This operation is expensive on most platforms as it is not hardware accelerated. Codename One's elevation functionality uses this method to generate shadow images which it reuses as much as possible for maximum performance.

    Note: Currently this is not supported on all platforms. Use `#isDrawShadowSupported()` to check for platform support at runtime. Use `#isDrawShadowFast()` to check for hardware acceleration.

    Note: On iOS, this is only supported for drawing to mutable images - not the global graphics context.

    ###### Parameters

    - `graphics`: The graphics context.

    - `image`: @param image The image whose raster should be used to generate the shadow. The alpha channel of this image is used as the bases for the shadow projection.

    - `x`: x-coordinate of the graphics context where shadow should be painted.

    - `y`: y-coordinate of the graphics context where shadow should be painted.

    - `offsetX`: The shadow offset X in pixels.

    - `offsetY`: The shadow offset Y in pixels.

    - `blurRadius`: The blur radius in pixels.

    - `spreadRadius`: The shadow spread in pixels.

    - `color`: The shadow color.

    - `opacity`: The shadow opacity.

    ###### Since

    8.0

    ###### See also

    - Component#paintShadows(Graphics, int, int)

    - Container#paintSurfaceShadows(Graphics)

    - #isDrawShadowSupported()

    - #isDrawShadowFast()

  - ### isDrawShadowSupported

    public boolean isDrawShadowSupported()

    Checks to see if drawing shadows is supported on this platform.

    ###### Returns

    True if the platform supports drawing shadows.

    ###### Since

    8.0

    ###### See also

    - #drawShadow(Object, Object, int, int, int, int, int, int, int, float)

  - ### isDrawShadowFast

    public boolean isDrawShadowFast()

    Checks to see if drawing shadows on this platform is hardware accelerated.

    ###### Returns

    True if drawing shadows is hardware accelerated.

    ###### Since

    8.0

  - ### setTransform

    public void setTransform(Object graphics, Transform transform)

    Sets the transformation matrix to be applied to all drawing operations. If originX, originY are non-zero, then the the transformation will first be translated to the origin, then applied, and then translated back.

    If isTransformSupported() returns false, then this method won't do anything.

    If isPerspectiveTransformSupported() returns false, then this method will only deal with 2D transformation matrices (i.e. the upper left 3x3 matrix of the provided transformation matrix.

    ###### Parameters

    - `graphics`

    - `m`: The transformation matrix. Can be 3x3 or 4x4.

    ###### See also

    - isTransformSupported() To check if this graphics context supports transformations.
    See Also:
      - To check if this graphics context supports perspective/3D transformations.

  - ### getTransform

    public Transform getTransform(Object graphics)

    Gets the current transformation matrix. This will populate the provided matrix with the data of the current transformation.

    ###### Parameters

    - `graphics`

    ###### Deprecated

    Use `com.codename1.ui.Transform)` instead.

    ###### See also

    - isTransformSupported()

    - isPerspectiveTransformSupported()

  - ### isTransformSupported

    public boolean isTransformSupported(Object graphics)

    Checks if matrix transformations are supported in the provided graphics context.

    ###### Parameters

    - `graphics`

    ###### Returns

    True if matrix transformations are supported by this graphics context.

    ###### See also

    - setTransform()

    - getTransform()

    - isPerspectiveTransformSupported()

  - ### isPerspectiveTransformSupported

    public boolean isPerspectiveTransformSupported(Object graphics)

    Checks if 3d/perspective transformations are supported in the provided graphics context.

    ###### Parameters

    - `graphics`

    ###### See also

    - setTransform()

    - getTransform()

    - isTransformSupported()

  - ### isShapeSupported

    public boolean isShapeSupported(Object graphics)

    Checks if drawing shapes is supported by the provided graphics context.

    ###### Parameters

    - `graphics`

  - ### isShapeClipSupported

    public boolean isShapeClipSupported(Object graphics)

    Checks if clipping shapes is supported by the provided graphics context.

    ###### Parameters

    - `graphics`

  - ### tileImage

    public void tileImage(Object graphics, Object img, int x, int y, int w, int h)

    Allows an implementation to optimize image tiling rendering logic

    ###### Parameters

    - `graphics`: the graphics object

    - `img`: the image

    - `x`: coordinate to tile the image along

    - `y`: coordinate to tile the image along

    - `w`: coordinate to tile the image along

    - `h`: coordinate to tile the image along

  - ### isNativeVideoPlayerControlsIncluded

    public boolean isNativeVideoPlayerControlsIncluded()

    Indicates if the native video player includes its own play/pause etc. controls so the movie player component doesn't need to include them

    ###### Returns

    true if the movie player component doesn't need to include such controls

  - ### isScaledImageDrawingSupported

    public boolean isScaledImageDrawingSupported()
    Indicates if image scaling on the fly is supported by the platform, if not Codename One will just scale the images on its own before drawing

  - ### drawImageArea

    public void drawImageArea(Object nativeGraphics, Object img, int x, int y, int imageX, int imageY, int imageWidth, int imageHeight)

    Draws a portion of the image

    ###### Parameters

    - `nativeGraphics`: the graphics context

    - `img`: the specified native image to be drawn

    - `x`: the x coordinate.

    - `y`: the y coordinate.

    - `imageX`: location within the image to draw

    - `imageY`: location within the image to draw

    - `imageWidth`: size of the location within the image to draw

    - `imageHeight`: size of the location within the image to draw

  - ### drawImageRotated

    public void drawImageRotated(Object graphics, Object img, int x, int y, int degrees)

    Draws the image so its top left coordinate corresponds to x/y with a fast native rotation in a square angle which must be one of 0, 90, 180 or 270

    ###### Parameters

    - `graphics`: the graphics context

    - `img`: the specified native image to be drawn

    - `x`: the x coordinate.

    - `y`: the y coordinate.

    - `degrees`: either 0, 90, 180 or 270 degree rotation for the image drawing

  - ### isRotationDrawingSupported

    public boolean isRotationDrawingSupported()

    Indicates whether drawImageRotated is supported by the platform for FAST drawing, if not then its not worth calling the method which will be unimplemented!

    ###### Returns

    true if drawImageRotated will draw an image

  - ### fillTriangle

    public void fillTriangle(Object graphics, int x1, int y1, int x2, int y2, int x3, int y3)

    Draws a filled triangle with the given coordinates

    ###### Parameters

    - `graphics`: the graphics context

    - `x1`: the x coordinate of the first vertex of the triangle

    - `y1`: the y coordinate of the first vertex of the triangle

    - `x2`: the x coordinate of the second vertex of the triangle

    - `y2`: the y coordinate of the second vertex of the triangle

    - `x3`: the x coordinate of the third vertex of the triangle

    - `y3`: the y coordinate of the third vertex of the triangle

  - ### drawRGB

    public abstract void drawRGB(Object graphics, int[] rgbData, int offset, int x, int y, int w, int h, boolean processAlpha)

    Draws the RGB values based on the MIDP API of a similar name. Renders a series of device-independent RGB+transparency values in a specified region. The values are stored in rgbData in a format with 24 bits of RGB and an eight-bit alpha value (0xAARRGGBB), with the first value stored at the specified offset. The scanlength specifies the relative offset within the array between the corresponding pixels of consecutive rows. Any value for scanlength is acceptable (even negative values) provided that all resulting references are within the bounds of the rgbData array. The ARGB data is rasterized horizontally from left to right within each row. The ARGB values are rendered in the region specified by x, y, width and height, and the operation is subject to the current clip region and translation for this Graphics object.

    ###### Parameters

    - `graphics`: the graphics context

    - `rgbData`: an array of ARGB values in the format 0xAARRGGBB

    - `offset`: the array index of the first ARGB value

    - `x`: the horizontal location of the region to be rendered

    - `y`: the vertical location of the region to be rendered

    - `w`: the width of the region to be rendered

    - `h`: the height of the region to be rendered

    - `processAlpha`: @param processAlpha true if rgbData has an alpha channel, false if all pixels are fully opaque

  - ### getNativeGraphics

    public abstract Object getNativeGraphics()

    Returns the native graphics object on which all rendering operations occur

    ###### Returns

    a native graphics context

  - ### getNativeGraphics

    public abstract Object getNativeGraphics(Object image)

    Returns the native graphics object on the given native image occur

    ###### Parameters

    - `image`: the native image on which the graphics will draw

    ###### Returns

    a native graphics context

  - ### charsWidth

    public abstract int charsWidth(Object nativeFont, char[] ch, int offset, int length)

    Return the width of the given characters in the given native font instance

    ###### Parameters

    - `nativeFont`: the font for which the string width should be calculated

    - `ch`: array of characters

    - `offset`: characters offsets

    - `length`: characters length

    ###### Returns

    the width of the given characters in this font instance

  - ### getFontAscent

    public int getFontAscent(Object nativeFont)

    Returns the ascent of the specified native font instance. Should always return a non-negative value.

    ###### Parameters

    - `nativeFont`

    ###### Returns

    The ascent of the native font instance

  - ### getFontDescent

    public int getFontDescent(Object nativeFont)

    Returns the descent below the baseline that a font can span. Should always be non-negative.

    ###### Parameters

    - `nativeFont`

  - ### isBaselineTextSupported

    public boolean isBaselineTextSupported()
    Checks whether the implementation supports drawing text on the baseline.

  - ### stringWidth

    public abstract int stringWidth(Object nativeFont, String str)

    Return the width of the given string in this font instance

    ###### Parameters

    - `nativeFont`: the font for which the string width should be calculated

    - `str`: the given string *

    ###### Returns

    the width of the given string in this font instance

  - ### charWidth

    public abstract int charWidth(Object nativeFont, char ch)

    Return the width of the specific character when rendered alone

    ###### Parameters

    - `nativeFont`: the font for which the string width should be calculated

    - `ch`: the specific character

    ###### Returns

    the width of the specific character when rendered alone

  - ### getHeight

    public abstract int getHeight(Object nativeFont)

    Return the total height of the font

    ###### Parameters

    - `nativeFont`: the font for which the string width should be calculated

    ###### Returns

    the total height of the font

  - ### getDefaultFont

    public abstract Object getDefaultFont()

    Return the global default font instance, if font is passed as null this font should be used

    ###### Returns

    the global default font instance

  - ### getFace

    public int getFace(Object nativeFont)

    Optional operation returning the font face for the font

    ###### Parameters

    - `nativeFont`: the font for which the string width should be calculated

    ###### Returns

    Optional operation returning the font face for system fonts

  - ### getSize

    public int getSize(Object nativeFont)

    Optional operation returning the font size for system fonts

    ###### Parameters

    - `nativeFont`: the font for which the string width should be calculated

    ###### Returns

    Optional operation returning the font size for system fonts

  - ### getStyle

    public int getStyle(Object nativeFont)

    Optional operation returning the font style for system fonts

    ###### Parameters

    - `nativeFont`: the font for which the string width should be calculated

    ###### Returns

    Optional operation returning the font style for system fonts

  - ### createFont

    public abstract Object createFont(int face, int style, int size)

    Creates a new instance of a native font

    ###### Parameters

    - `face`: @param face the face of the font, can be one of FACE_SYSTEM, FACE_PROPORTIONAL, FACE_MONOSPACE.

    - `style`: @param style the style of the font. The value is an OR'ed combination of STYLE_BOLD, STYLE_ITALIC, and STYLE_UNDERLINED; or the value is zero (STYLE_PLAIN).

    - `size`: @param size the size of the font, can be one of SIZE_SMALL, SIZE_MEDIUM, SIZE_LARGE

    ###### Returns

    a native font object

  - ### keyPressed

    protected void keyPressed(int keyCode)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `keyCode`: the key for the event

  - ### keyReleased

    protected void keyReleased(int keyCode)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `keyCode`: the key for the event

  - ### isRightMouseButtonDown

    public boolean isRightMouseButtonDown()

    Checks if last mouse press was a right click.

    ###### Returns

    True if last mouse press was a right click.

    ###### Since

    7.0

  - ### isAltKeyDown

    public boolean isAltKeyDown()
    Checks whether the alt key is currently down. Only relevant on desktop ports.

  - ### isShiftKeyDown

    public boolean isShiftKeyDown()
    Checks whether the shift key is currently down. Only relevant on desktop ports.

  - ### isAltGraphKeyDown

    public boolean isAltGraphKeyDown()
    Checks whether the altgraph key is currently down. Only relevant on desktop ports.

  - ### isControlKeyDown

    public boolean isControlKeyDown()
    Checks whether the control key is currently down. Only relevant on desktop ports.

  - ### isMetaKeyDown

    public boolean isMetaKeyDown()
    Checks whether the meta key is currently down. Only relevant on desktop ports.

  - ### pointerDragged

    protected void pointerDragged(int x, int y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerPressed

    protected void pointerPressed(int x, int y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerReleased

    protected void pointerReleased(int x, int y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerHover

    protected void pointerHover(int[] x, int[] y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerHoverReleased

    protected void pointerHoverReleased(int[] x, int[] y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerHoverReleased

    protected void pointerHoverReleased(int x, int y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerHoverPressed

    protected void pointerHoverPressed(int[] x, int[] y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerHoverPressed

    protected void pointerHoverPressed(int x, int y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerHover

    protected void pointerHover(int x, int y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerDragged

    protected void pointerDragged(int[] x, int[] y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### hasDragStarted

    protected boolean hasDragStarted(int[] x, int[] y)

    This method can be overriden by subclasses to indicate whether a drag event has started or whether the device is just sending out "noise". This method is invoked by pointer dragged to determine whether to propogate the actual pointer drag event to Codename One.

    ###### Parameters

    - `x`: the position of the current drag event

    - `y`: the position of the current drag event

    ###### Returns

    true if the drag should propagate into Codename One

  - ### hasDragStarted

    protected boolean hasDragStarted(int x, int y)

    This method can be overriden by subclasses to indicate whether a drag event has started or whether the device is just sending out "noise". This method is invoked by pointer dragged to determine whether to propagate the actual pointer drag event to Codename One.

    ###### Parameters

    - `x`: the position of the current drag event

    - `y`: the position of the current drag event

    ###### Returns

    true if the drag should propagate into Codename One

  - ### getDragStartPercentage

    public int getDragStartPercentage()

    This method allows us to manipulate the drag started detection logic. If the pointer was dragged for more than this percentage of the display size it is safe to assume that a drag is in progress.

    ###### Returns

    motion percentage

  - ### setDragStartPercentage

    public void setDragStartPercentage(int dragStartPercentage)

    This method allows us to manipulate the drag started detection logic. If the pointer was dragged for more than this percentage of the display size it is safe to assume that a drag is in progress.

    ###### Parameters

    - `dragStartPercentage`: percentage of the screen required to initiate drag

  - ### getDragAutoActivationThreshold

    protected int getDragAutoActivationThreshold()

    This method allows subclasses to manipulate the drag started detection logic. If more than this number of drag events were delivered it is safe to assume a drag has started This number must be bigger than 0!

    ###### Returns

    number representing a minimum number of motion events to start a drag operation

  - ### pointerPressed

    protected void pointerPressed(int[] x, int[] y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### pointerReleased

    protected void pointerReleased(int[] x, int[] y)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `x`: the position of the event

    - `y`: the position of the event

  - ### sizeChanged

    protected void sizeChanged(int w, int h)

    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

    ###### Parameters

    - `w`: the size of the screen

    - `h`: the size of the screen

  - ### hideNotify

    protected void hideNotify()
    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

  - ### showNotify

    protected void showNotify()
    Subclasses should invoke this method, it delegates the event to the display and into Codename One.

  - ### fillRectRadialGradient

    public void fillRectRadialGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height, float relativeX, float relativeY, float relativeSize)

    Draws a radial gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient. Notice that a radial gradient will result in a circular shape, to create a square use fillRect or draw a larger shape and clip to the appropriate size.

    ###### Parameters

    - `graphics`: the graphics context

    - `startColor`: the starting RGB color

    - `endColor`: the ending RGB color

    - `x`: the x coordinate

    - `y`: the y coordinate

    - `width`: the width of the region to be filled

    - `height`: the height of the region to be filled

    - `relativeX`: indicates the relative position of the gradient within the drawing region

    - `relativeY`: indicates the relative position of the gradient within the drawing region

    - `relativeSize`: indicates the relative size of the gradient within the drawing region

  - ### fillRadialGradient

    public void fillRadialGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height)

    Draws a radial gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient. Notice that a radial gradient will result in a circular shape, to create a square use fillRect or draw a larger shape and clip to the appropriate size.

    ###### Parameters

    - `graphics`: the graphics context

    - `startColor`: the starting RGB color

    - `endColor`: the ending RGB color

    - `x`: the x coordinate

    - `y`: the y coordinate

    - `width`: the width of the region to be filled

    - `height`: the height of the region to be filled

  - ### fillRadialGradient

    public void fillRadialGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height, int startAngle, int arcAngle)

    Draws a radial gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient. Notice that a radial gradient will result in a circular shape, to create a square use fillRect or draw a larger shape and clip to the appropriate size.

    ###### Parameters

    - `graphics`: the graphics context

    - `startColor`: the starting RGB color

    - `endColor`: the ending RGB color

    - `x`: the x coordinate

    - `y`: the y coordinate

    - `width`: the width of the region to be filled

    - `height`: the height of the region to be filled

    - `startAngle`: the beginning angle. Zero is at 3 o'clock. Positive angles are counter-clockwise.

    - `arcAngle`: the angular extent of the arc, relative to the start angle. Positive angles are counter-clockwise.

  - ### fillLinearGradient

    public void fillLinearGradient(Object graphics, int startColor, int endColor, int x, int y, int width, int height, boolean horizontal)

    Draws a linear gradient in the given coordinates with the given colors, doesn't take alpha into consideration when drawing the gradient

    ###### Parameters

    - `graphics`: the graphics context

    - `startColor`: the starting RGB color

    - `endColor`: the ending RGB color

    - `x`: the x coordinate

    - `y`: the y coordinate

    - `width`: the width of the region to be filled

    - `height`: the height of the region to be filled

    - `horizontal`: indicating wheter it is a horizontal fill or vertical

  - ### fillGradient

    public void fillGradient(Object graphics, Gradient gradient, int x, int y, int width, int height)
    Fills the rectangle (x, y, width, height) with the given multi-stop gradient. Default implementation reuses a weakly-cached rasterization from the Gradient (see `Gradient#getCachedRaster`) - so a gradient painted into the same-sized rectangle on subsequent frames pays only for the texture upload, not per-pixel re-sampling. Ports with hardware shader support should override and draw directly through the shader.

  - ### blurRegion

    public boolean blurRegion(Object graphics, int x, int y, int width, int height, float radius)
    In-place region blur for CSS backdrop-filter:blur(). Default returns false signalling no in-place support - caller falls back to snapshot+blur.

  - ### fillPolygon

    public void fillPolygon(Object graphics, int[] xPoints, int[] yPoints, int nPoints)

    Fills a closed polygon defined by arrays of x and y coordinates. Each pair of (x, y) coordinates defines a point.

    ###### Parameters

    - `graphics`: the graphics context

    - `xPoints`: - a an array of x coordinates.

    - `yPoints`: - a an array of y coordinates.

    - `nPoints`: - a the total number of points.

  - ### drawPolygon

    public void drawPolygon(Object graphics, int[] xPoints, int[] yPoints, int nPoints)

    Draws a closed polygon defined by arrays of x and y coordinates. Each pair of (x, y) coordinates defines a point.

    ###### Parameters

    - `graphics`: the graphics context

    - `xPoints`: - a an array of x coordinates.

    - `yPoints`: - a an array of y coordinates.

    - `nPoints`: - a the total number of points.

  - ### getKeyboardType

    public int getKeyboardType()

    Returns the type of the input device one of: KEYBOARD_TYPE_UNKNOWN, KEYBOARD_TYPE_NUMERIC, KEYBOARD_TYPE_QWERTY, KEYBOARD_TYPE_VIRTUAL, KEYBOARD_TYPE_HALF_QWERTY

    ###### Returns

    KEYBOARD_TYPE_UNKNOWN

  - ### isNativeInputSupported

    public boolean isNativeInputSupported()

    Indicates whether the device supports native in place editing in which case lightweight input logic shouldn't be used for input.

    ###### Returns

    false by default

  - ### isNativeInputImmediate

    public boolean isNativeInputImmediate()

    Indicates whether the device should switch to native input immediately on first touch

    ###### Returns

    false by default

  - ### isMultiTouch

    public boolean isMultiTouch()

    Indicates whether the device supports multi-touch events, this is only relevant when touch events are supported

    ###### Returns

    false by default

  - ### isClickTouchScreen

    public boolean isClickTouchScreen()

    Indicates whether the device has a double layer screen thus allowing two stages to touch events: click and hover. This is true for devices such as the storm but can also be true for a PC with a mouse pointer floating on top.

    A click touch screen will also send pointer hover events to the underlying software and will only send the standard pointer events on click.

    ###### Returns

    false by default

  - ### isNativeIndexed

    public boolean isNativeIndexed()

    Returns true if indexed images should be used natively

    ###### Returns

    true if a native image should be used for indexed images

  - ### createNativeIndexed

    public Object createNativeIndexed(Image image)

    Creates a native image representing the indexed image

    ###### Parameters

    - `image`: the indexed image

    ###### Returns

    a native version of the indexed image

  - ### isOpaque

    public boolean isOpaque(Image codenameOneImage, Object nativeImage)

    Returns true if the image was opaque

    ###### Parameters

    - `codenameOneImage`: the Codename One image

    - `nativeImage`: the image object to test

    ###### Returns

    true if the image is opaque

  - ### isAffineSupported

    public boolean isAffineSupported()

    Indicates whether the underlying implementation can draw using an affine transform hence methods such as rotate, scale and shear would work

    ###### Returns

    true if an affine transformation matrix is present

  - ### resetAffine

    public void resetAffine(Object nativeGraphics)

    Resets the affine transform to the default value

    ###### Parameters

    - `nativeGraphics`: the native graphics object

  - ### isTranslateMatrixSupported

    public boolean isTranslateMatrixSupported()

    Indicates whether the underlying implementation composes `g.translateMatrix(float, float)` onto the impl-side transform matrix. When this returns false `Graphics.translateMatrix` silently falls back to the per-Graphics integer accumulator (`Graphics.translate(int, int)`), so apps don't render at the wrong position on ports that haven't been updated. Ports that DO route `translateMatrix` through the matrix (iOS, JavaSE, Android, modern JavaScript) must override this to return true AND override `#translateMatrix(Object, float, float)`. The legacy / restricted JavaScript builds keep the default false until the matrix path is wired up.

    ###### Returns

    true if `translateMatrix` reaches the impl matrix on this port.

  - ### translateMatrix

    public void translateMatrix(Object nativeGraphics, float x, float y)

    Composes a translation onto the impl-side transform matrix -- the matrix-correct counterpart of `Graphics.translate(int, int)`. Pairs with `#scale(Object, float, float)` and `#rotate(Object, float, int, int)`: the new transform is `currentMatrix * T(x, y)` and any subsequent draw applies that composed matrix as a single step (no separate integer accumulator pre-applied before the matrix). Only invoked when `#isTranslateMatrixSupported()` returns true; ports must keep the two in sync.

    ###### Parameters

    - `nativeGraphics`: the native graphics object

    - `x`: x-axis translation

    - `y`: y-axis translation

  - ### scale

    public void scale(Object nativeGraphics, float x, float y)

    Scales the coordinate system using the affine transform

    ###### Parameters

    - `nativeGraphics`: the native graphics object

    - `x`: factor for x

    - `y`: factor for y

  - ### rotate

    public void rotate(Object nativeGraphics, float angle)

    Rotates the coordinate system around a radian angle using the affine transform

    ###### Parameters

    - `angle`: the rotation angle in radians

    - `nativeGraphics`: the native graphics object

  - ### rotate

    public void rotate(Object nativeGraphics, float angle, int pivotX, int pivotY)

    Rotates the coordinate system around a radian angle using the affine transform

    ###### Parameters

    - `angle`: the rotation angle in radians

    - `pivotX`: the pivot location

    - `pivotY`: the pivot location

    - `nativeGraphics`: the native graphics object

  - ### shear

    public void shear(Object nativeGraphics, float x, float y)

    Shear the graphics coordinate system using the affine transform

    ###### Parameters

    - `x`: factor for x

    - `y`: factor for y

    - `nativeGraphics`: the native graphics object

  - ### isSVGSupported

    public boolean isSVGSupported()

    Indicates whether the underlying platform supports creating an SVG Image

    ###### Returns

    Returns:
      true if the method create SVG image would return a valid image object from an SVG Input stream

  - ### createSVGImage

    public Object createSVGImage(String baseURL, byte[] data) throws IOException

    Creates an SVG Image from the given byte array data and the base URL

    ###### Parameters

    - `baseURL`: URL which is used to resolve relative references within the SVG file

    - `data`: the content of the SVG file

    ###### Returns

    a native image that can be used within the image object

    ###### Throws

    - `IOException`: if resource lookup fail SVG is unsupported
    Throws:
      `IOException`

  - ### getSVGDocument

    public Object getSVGDocument(Object svgImage)

    Returns a platform specific DOM object that can be manipulated by the user to change the SVG Image

    ###### Parameters

    - `svgImage`: the underlying image object

    ###### Returns

    Returns:
      Platform dependent object, when JSR 226 is supported an SVGSVGElement might be returned.

  - ### animateImage

    public boolean animateImage(Object nativeImage, long lastFrame)

    Callback to allow images animated by the underlying system to change their state e.g. for SVG or animated gif support. This method returns true if an animation state has changed requiring a repaint.

    ###### Parameters

    - `nativeImage`: a native image used within the image object

    - `lastFrame`: the time the last frame of animation was shown

    ###### Returns

    true if a repaint is required since the image state changed, false otherwise

  - ### getFontPlatformNames

    public String[] getFontPlatformNames()

    Returns a list of the platform names ordered by priority, platform names are used to choose a font based on platform. Since a platform might support several layers for choice in narrowing platform font selection

    ###### Returns

    the platform names ordered according to priority.

  - ### loadTrueTypeFont

    public Object loadTrueTypeFont(String fontName, String fileName)

    Creates a true type font with the given name/filename (font name might be different from the file name and is required by some devices e.g. iOS). The font file must reside in the src root of the project in order to be detectable. The file name should contain no slashes or any such value.

    ###### Parameters

    - `fontName`: the name of the font

    - `fileName`: the file name of the font as it appears in the src directory of the project

    ###### Returns

    the native font created from the stream

  - ### isNativeFontSchemeSupported

    public boolean isNativeFontSchemeSupported()

    Indicates whether the implementation supports loading a font "natively" to handle one of the common native prefixes

    ###### Returns

    true if the "native:" prefix is supported by loadTrueTypeFont

  - ### deriveTrueTypeFont

    public Object deriveTrueTypeFont(Object font, float size, int weight)

    Creates a font based on this truetype font with the given pixel, WARNING! This method will only work in the case of truetype fonts!

    ###### Parameters

    - `font`: the native font instance

    - `size`: the size of the font in pixels

    - `weight`: PLAIN, BOLD or ITALIC weight based on the constants in this class

    ###### Returns

    scaled font instance

  - ### isTrueTypeSupported

    public boolean isTrueTypeSupported()

    Returns true if the system supports dynamically loading truetype fonts from a file.

    ###### Returns

    Returns:
      true if the system supports dynamically loading truetype fonts from a file.

  - ### loadNativeFont

    public Object loadNativeFont(String lookup)

    Loads a native font based on a lookup for a font name and attributes. Font lookup values can be separated by commas and thus allow fallback if the primary font isn't supported by the platform.

    ###### Parameters

    - `lookup`: string describing the font

    ###### Returns

    the native font object

  - ### isLookupFontSupported

    public boolean isLookupFontSupported()

    Indicates whether loading a font by a string is supported by the platform

    ###### Returns

    true if the platform supports font lookup

  - ### minimizeApplication

    public boolean minimizeApplication()

    Minimizes the current application if minimization is supported by the platform (may fail). Returns false if minimization failed.

    ###### Returns

    false if minimization failed true if it succeeded or seems to be successful

  - ### restoreMinimizedApplication

    public void restoreMinimizedApplication()
    Restore the minimized application if minimization is supported by the platform

  - ### isMinimized

    public boolean isMinimized()

    Indicates whether an application is minimized

    ###### Returns

    true if the application is minimized

  - ### cacheRadialGradients

    protected boolean cacheRadialGradients()

    Indicates whether the implementation is interested in caching radial gradients for drawing.

    ###### Returns

    true to activate radial gradient caching

  - ### cacheLinearGradients

    protected boolean cacheLinearGradients()

    Indicates whether the implementation is interested in caching linear gradients for drawing.

    ###### Returns

    true to activate linear gradient caching

  - ### isThirdSoftButton

    public boolean isThirdSoftButton()

    Indicates the default status to apply to the 3rd softbutton variable

    ###### Returns

    true if the 3rd softbutton should be set as true

    ###### See also

    - com.codename1.ui.Display#isThirdSoftButton()

    - com.codename1.ui.Display#setThirdSoftButton()

  - ### getDragPathLength

    public int getDragPathLength()

    Indicates how many drag points are used to calculate dragging speed

    ###### Returns

    the size of points to calculate the speed

  - ### getDragPathTime

    public int getDragPathTime()

    Indicates what drag points are valid for the drag speed calculation. Points that are older then the current time - the path time are ignored

    ###### Returns

    the relevance time per point

  - ### getDragSpeed

    public float getDragSpeed(float[] points, long[] dragPathTime, int dragPathOffset, int dragPathLength)

    This method returns the dragging speed based on the latest dragged events

    ###### Parameters

    - `points`: array of locations

    - `dragPathTime`: the time difference between each point

    - `dragPathOffset`: the offset in the arrays

    - `dragPathLength`

  - ### isBidiAlgorithm

    public boolean isBidiAlgorithm()

    Indicates whether Codename One should consider the bidi RTL algorithm when drawing text or navigating with the text field cursor.

    ###### Returns

    true if the bidi algorithm should be considered

  - ### setBidiAlgorithm

    public void setBidiAlgorithm(boolean activate)

    Indicates whether Codename One should consider the bidi RTL algorithm when drawing text or navigating with the text field cursor.

    ###### Parameters

    - `activate`: @param activate set to true to activate the bidi algorithm, false to disable it

  - ### convertBidiLogicalToVisual

    public String convertBidiLogicalToVisual(String s)

    Converts the given string from logical bidi layout to visual bidi layout so it can be rendered properly on the screen. This method is only necessary for devices/platforms that don't have "built in" bidi support such as Sony Ericsson devices. See this for more on visual vs. logical ordering.

    ###### Parameters

    - `s`: a "logical" string with RTL characters

    ###### Returns

    a "visual" renderable string

  - ### getCharLocation

    public int getCharLocation(String source, int index)

    Returns the index of the given char within the source string, the actual index isn't necessarily the same when bidi is involved See this for more on visual vs. logical ordering.

    ###### Parameters

    - `source`: the string in which we are looking for the position

    - `index`: the "logical" location of the cursor

    ###### Returns

    the "visual" location of the cursor

  - ### isRTLOrWhitespace

    public boolean isRTLOrWhitespace(char c)

    Returns true if the given character is an RTL character or a space character

    ###### Parameters

    - `c`: character to test

    ###### Returns

    true if bidi is active and this is a

  - ### isRTL

    public boolean isRTL(char c)

    Returns true if the given character is an RTL character

    ###### Parameters

    - `c`: character to test

    ###### Returns

    true if the charcter is an RTL character

  - ### getResourceAsStream

    public InputStream getResourceAsStream(Class cls, String resource)

    This method is essentially equivalent to cls.getResourceAsStream(String) however some platforms might define unique ways in which to load resources within the implementation.

    ###### Parameters

    - `cls`: class to load the resource from

    - `resource`: relative/absolute URL based on the Java convention

    ###### Returns

    input stream for the resource or null if not found

  - ### isAnimation

    public boolean isAnimation(Object nativeImage)

    Animations should return true to allow the native image animation to update

    ###### Parameters

    - `nativeImage`: underlying native imae

    ###### Returns

    true if this is an animation

  - ### createNativePeer

    public PeerComponent createNativePeer(Object nativeComponent)

    Creates a peer component for the given lightweight component

    ###### Parameters

    - `nativeComponent`: a platform specific "native component"

    ###### Returns

    Returns:
      a Codename One peer component that can be manipulated just like any other Codename One component but would internally encapsulate the given native peer

  - ### showNativeScreen

    public void showNativeScreen(Object nativeFullScreenPeer)

    Shows a native Form/Canvas or some other heavyweight native screen

    ###### Parameters

    - `nativeFullScreenPeer`: the native screen peer

  - ### setNativeCommands

    public void setNativeCommands(Vector commands)

    Places the following commands on the native menu system

    ###### Parameters

    - `commands`: the Codename One commands to use

  - ### getDesktopTitleBarMode

    public String getDesktopTitleBarMode()

    Returns the desktop title-bar mode for this platform: one of `"native"` (OS title bar + native menu bar), `"custom"` (undecorated window where the CN1 Toolbar acts as the title bar) or `"toolbar"` (legacy in-app CN1 Toolbar). Returns `"toolbar"` by default; desktop ports override this when running on the desktop. This is the authoritative source consulted by `Form.isDesktopNativeChrome()` - more robust than a theme constant, which not all ports propagate identically.

    ###### Returns

    the desktop title-bar mode, never null

  - ### minimizeNativeWindow

    public void minimizeNativeWindow()
    Minimizes the native desktop window when the application draws its own (custom mode) window chrome on an undecorated window. No-op on platforms without a native window.

  - ### toggleMaximizeNativeWindow

    public void toggleMaximizeNativeWindow()
    Toggles the maximized state of the native desktop window when the application draws its own (custom mode) window chrome. No-op on platforms without a native window.

  - ### closeNativeWindow

    public void closeNativeWindow()
    Closes the native desktop window when the application draws its own (custom mode) window chrome. No-op on platforms without a native window.

  - ### startNativeWindowDrag

    public void startNativeWindowDrag(int x, int y)

    Begins dragging the native desktop window (custom mode title bar). The arguments are absolute pointer coordinates at the start of the drag. No-op without a native window.

    ###### Parameters

    - `x`: absolute pointer x

    - `y`: absolute pointer y

  - ### dragNativeWindow

    public void dragNativeWindow(int x, int y)

    Continues dragging the native desktop window (custom mode title bar). The arguments are the current absolute pointer coordinates. No-op without a native window.

    ###### Parameters

    - `x`: absolute pointer x

    - `y`: absolute pointer y

  - ### exitApplication

    public void exitApplication()
    Exits the application...

  - ### exit

    public void exit()
    Exits the application...

  - ### getProperty

    public String getProperty(String key, String defaultValue)

    Returns the property from the underlying platform deployment or the default value if no deployment values are supported. This is equivalent to the getAppProperty from the jad file.

    The implementation should be responsible for the following keys to return reasonable valid values for the application:

    - AppName

    - User-Agent - ideally although not required

    - AppVersion

    - Platform - Similar to microedition.platform

    ###### Parameters

    - `key`: the key of the property

    - `defaultValue`: a default return value

    ###### Returns

    the value of the property

  - ### canExecute

    public Boolean canExecute(String url)

    Returns true if executing this URL should work, returns false if it will not and null if this is unknown.

    ###### Parameters

    - `url`: the url that would be executed

    ###### Returns

    Returns:
      true if executing this URL should work, returns false if it will not and null if this is unknown

  - ### execute

    public void execute(String url)

    Executes the given URL on the native platform

    ###### Parameters

    - `url`: the url to execute

  - ### execute

    public void execute(String url, ActionListener response)

    Executes the given URL on the native platform, this method is useful if the platform has the ability to send an event to the app when the execution has ended, currently this works only for Android platform to invoke other intents.

    ###### Parameters

    - `url`: the url to execute

    - `response`: @param response a callback from the platform when this execution returned to the application

  - ### downloadBytesAsFile

    public boolean downloadBytesAsFile(String fileName, byte[] bytes)

    Offers the given in-memory bytes to the user as a downloadable file, bypassing local storage. Implemented by platforms (currently the JavaScript port) where the storage-backed `execute(file:// URL)` download path is unavailable. Returns `true` if the platform handled the download (so callers can skip the storage fallback), `false` if unsupported.

    ###### Parameters

    - `fileName`: the suggested file name for the download

    - `bytes`: the file contents

  - ### getDeviceDensity

    public int getDeviceDensity()

    Returns one of the density variables appropriate for this device, notice that density doesn't always correspond to resolution and an implementation might decide to change the density based on DPI constraints.

    ###### Returns

    one of the DENSITY constants of Display

  - ### getDisplaySafeArea

    public Rectangle getDisplaySafeArea(Rectangle rect)

    This method returns a rectangle defining the "safe" area of the display, which excludes areas on the screen that are covered by notches, task bars, rounded corners, etc.

    This feature was primarily added to deal with the task bar on the iPhone X, which is displayed on the screen near the bottom edge, and can interfere with components that are laid out at the bottom of the screen.

    Most platforms will simply return a Rectangle with bounds (0, 0, displayWidth, displayHeight). iPhone X will return a rectangle that excludes the notch, and task bar regions.

    ###### Parameters

    - `rect`: Out parameter where safe bounds are set.

    ###### Returns

    The same rectangle that was passed as a parameter.

    ###### Since

    7.0

    ###### See also

    - Form#getSafeArea()

  - ### playBuiltinSound

    public void playBuiltinSound(String soundIdentifier)

    Plays a builtin device sound matching the given identifier, implementations and themes can offer additional identifiers to the ones that are already built in.

    ###### Parameters

    - `soundIdentifier`: @param soundIdentifier the sound identifier which can match one of the common constants in this class or be a user/implementation defined sound

  - ### playUserSound

    protected void playUserSound(String soundIdentifier)

    Plays a sound defined by the user

    ###### Parameters

    - `soundIdentifier`: @param soundIdentifier the sound identifier which can match one of the common constants in this class or be a user/implementation defined sound

  - ### playNativeBuiltinSound

    protected void playNativeBuiltinSound(Object data)

    This method allows implementations to store sound objects natively e.g. in files, byte arrays whatever

    ###### Parameters

    - `data`: native data object

  - ### convertBuiltinSound

    protected Object convertBuiltinSound(InputStream i) throws IOException

    Converts a sound object to a form which will be easy for the implementation to play later on. E.g. a byte array or a file/file name and return an object that will allow playNativeBuiltinSound() to use

    ###### Parameters

    - `i`: stream containing a sound file

    ###### Returns

    native playback object

    ###### Throws

    - `java.io.IOException`: thrown by the stream
    Throws:
      `IOException`

  - ### installBuiltinSound

    public void installBuiltinSound(String soundIdentifier, InputStream data) throws IOException

    Installs a replacement sound as the builtin sound responsible for the given sound identifier (this will override the system sound if such a sound exists).

    ###### Parameters

    - `soundIdentifier`: the sound string passed to playBuiltinSound

    - `data`: @param data an input stream containing platform specific audio file, its usually safe to assume that wav/mp3 would be supported.

    ###### Throws

    - `IOException`: if the stream throws an exception
    Throws:
      `IOException`

  - ### isBuiltinSoundAvailable

    public boolean isBuiltinSoundAvailable(String soundIdentifier)

    Indicates whether a user installed or system sound is available

    ###### Parameters

    - `soundIdentifier`: the sound string passed to playBuiltinSound

    ###### Returns

    true if a sound of this given type is avilable

  - ### isBuiltinSoundsEnabled

    public boolean isBuiltinSoundsEnabled()

    Allows muting/unmuting the builtin sounds easily

    ###### Returns

    true if the sound is not muted

  - ### setBuiltinSoundsEnabled

    public void setBuiltinSoundsEnabled(boolean enabled)

    Allows muting/unmuting the builtin sounds easily

    ###### Parameters

    - `enabled`: indicates whether the sound is muted

  - ### createMedia

    public Media createMedia(String uri, boolean isVideo, Runnable onCompletion) throws IOException

    Plays the sound in the given URI which is partially platform specific.

    ###### Parameters

    - `uri`: the platform specific location for the sound

    - `onCompletion`: invoked when the audio file finishes playing, may be null

    ###### Returns

    a handle that can be used to control the playback of the audio

    ###### Throws

    - `java.io.IOException`: if the URI access fails
    Throws:
      `IOException`

  - ### createMediaAsync

    public AsyncResource<Media> createMediaAsync(String uri, boolean video, Runnable onCompletion)

    Creates media asynchronously.

    ###### Parameters

    - `uri`: the platform specific location for the sound

    - `onCompletion`: invoked when the audio file finishes playing, may be null

    ###### Returns

    a handle that can be used to control the playback of the audio

    ###### See also

    - #createMedia(java.lang.String, boolean, java.lang.Runnable)

  - ### addCompletionHandler

    public void addCompletionHandler(Media media, Runnable onCompletion)

    Adds a callback to a Media element that will be called when the media finishes playing.

    ###### Parameters

    - `media`: The media to add the callback to.

    - `onCompletion`: The callback that will run on the EDT when the playback completes.

    ###### See also

    - #removeCompletionHandler(com.codename1.media.Media, java.lang.Runnable)

    - Display#addCompletionHandler(com.codename1.media.Media, java.lang.Runnable)

  - ### removeCompletionHandler

    public void removeCompletionHandler(Media media, Runnable onCompletion)

    Removes onComplete callback from Media element.

    ###### Parameters

    - `media`: The media element.

    - `onCompletion`: The callback.

    ###### See also

    - #addCompletionHandler(com.codename1.media.Media, java.lang.Runnable)

    - Display#removeCompletionHandler(com.codename1.media.Media, java.lang.Runnable)

  - ### createMedia

    public Media createMedia(InputStream stream, String mimeType, Runnable onCompletion) throws IOException

    Plays the sound in the given stream

    ###### Parameters

    - `stream`: the stream containing the media data

    - `mimeType`: the type of the data in the stream

    - `onCompletion`: invoked when the audio file finishes playing, may be null

    ###### Returns

    a handle that can be used to control the playback of the audio

    ###### Throws

    - `java.io.IOException`: if the URI access fails

    ###### See also

    - #createMediaAsync(java.io.InputStream, java.lang.String, java.lang.Runnable)
    Throws:
      `IOException`

  - ### isSoundPoolSupported

    public boolean isSoundPoolSupported()
    Indicates whether this platform provides a native low latency sound pool (backing `com.codename1.gaming.SoundPool`). The default implementation returns false, in which case the gaming layer falls back to a `MediaManager` based pool. Ports with a purpose built low latency audio API (Android `SoundPool`, iOS `AVAudioEngine`, the desktop `javax.sound.sampled` mixer, WebAudio) override this and `#createSoundPool(int)`.

  - ### createSoundPool

    public SoundPoolPeer createSoundPool(int maxStreams)

    Creates a native low latency sound pool peer, or returns null when this platform does not provide one (the default).

    ###### Parameters

    - `maxStreams`: the maximum number of simultaneously playing voices

  - ### createMediaAsync

    public AsyncResource<Media> createMediaAsync(InputStream stream, String mimeType, Runnable onCompletion)

    Creates media asynchronously.

    ###### Parameters

    - `stream`: the stream containing the media data

    - `mimeType`: the type of the data in the stream

    - `onCompletion`: invoked when the audio file finishes playing, may be null

    ###### Returns

    a handle that can be used to control the playback of the audio

    ###### Since

    7.0

    ###### See also

    - #createMedia(java.io.InputStream, java.lang.String, java.lang.Runnable)

  - ### createBackgroundMedia

    public Media createBackgroundMedia(String uri) throws IOException

    Creates an audio media that can be played in the background.

    ###### Parameters

    - `uri`: @param uri the uri of the media can start with jar://, file://, http:// (can also use rtsp:// if supported on the platform)

    ###### Returns

    Returns:

      Media a Media Object that can be used to control the playback of the media

      ###### Throws

      - `IOException`: if creation of media from the given URI has failed
    Throws:
      `IOException`

  - ### createBackgroundMediaAsync

    public AsyncResource<Media> createBackgroundMediaAsync(String uri)

    Creates an audio media that can be played in the background.

    This is run asynchronously so that this call does not block.

    ###### Parameters

    - `uri`: @param uri the uri of the media can start with jar://, file://, http:// (can also use rtsp:// if supported on the platform)

    ###### Returns

    Returns:

      Media a Media Object that can be used to control the playback of the media

      ###### Throws

      - `IOException`: if creation of media from the given URI has failed

  - ### createSoftWeakRef

    public Object createSoftWeakRef(Object o)

    Creates a soft/weak reference to an object that allows it to be collected yet caches it. This method is in the porting layer since CLDC only includes weak references while some platforms include nothing at all and some include the superior soft references.

    ###### Parameters

    - `o`: object to cache

    ###### Returns

    a caching object or null if caching isn't supported

  - ### extractHardRef

    public Object extractHardRef(Object o)

    Extracts the hard reference from the soft/weak reference given

    ###### Parameters

    - `o`: the reference returned by createSoftWeakRef

    ###### Returns

    the original object submitted or null

  - ### notifyCommandBehavior

    public void notifyCommandBehavior(int commandBehavior)

    This method notifies the implementation about the chosen commands behavior

    ###### Parameters

    - `commandBehavior`: see Display.COMMAND_BEHAVIOR...

  - ### hasNativeTheme

    public boolean hasNativeTheme()

    Indicates if the implemenetation has a native underlying theme

    ###### Returns

    true if the implementation has a native theme available

  - ### installNativeTheme

    public void installNativeTheme()
    Installs the native theme, this is only applicable if hasNativeTheme() returned true. Notice that this method might replace the DefaultLookAndFeel instance and the default transitions.

  - ### copyToClipboard

    public void copyToClipboard(Object obj)

    Performs a clipboard copy operation, if the native clipboard is supported by the implementation it would be used

    ###### Parameters

    - `obj`: @param obj object to copy, while this can be any arbitrary object it is recommended that only Strings or Codename One image objects be used to copy

  - ### getPasteDataFromClipboard

    public Object getPasteDataFromClipboard()

    Returns the current content of the clipboard

    ###### Returns

    can be any object or null see copyToClipboard

  - ### isPortrait

    public boolean isPortrait()

    Returns true if the device is currently in portrait mode

    ###### Returns

    true if the device is in portrait mode

  - ### canForceOrientation

    public boolean canForceOrientation()

    Returns true if the device allows forcing the orientation via code, feature phones do not allow this although some include a jad property allowing for this feature

    ###### Returns

    true if lockOrientation would work

  - ### lockOrientation

    public void lockOrientation(boolean portrait)

    On devices that return true for canForceOrientation() this method can lock the device orientation either to portrait or landscape mode

    ###### Parameters

    - `portrait`: true to lock to portrait mode, false to lock to landscape mode

  - ### unlockOrientation

    public void unlockOrientation()
    This is the reverse method for lock orientation allowing orientation lock to be disabled

  - ### isNativeBrowserComponentSupported

    public boolean isNativeBrowserComponentSupported()

    An implementation can return true if it supports embedding a native browser widget

    ###### Returns

    true if the implementation supports embedding a native browser widget

  - ### getGpuImplementation

    public GpuImplementation getGpuImplementation()

    Returns the platform's GPU backend for the portable 3D API (`com.codename1.gpu.RenderView`), or null on platforms without a 3D backend. Returning a single backend object (rather than scattering individual peer-lifecycle methods across the implementation) lets each port keep all of its GPU wiring in one place. A non-null return is what `Display.isGpuSupported()` reports.

    ###### Returns

    the platform GPU backend, or null if the 3D GPU API is unsupported

  - ### setPinchToZoomEnabled

    public void setPinchToZoomEnabled(PeerComponent browserPeer, boolean e)

    Some platforms require that you enable pinch to zoom explicitly. This method has no effect if pinch to zoom isn't supported by the platform

    ###### Parameters

    - `browserPeer`: browser instance

    - `e`: true to enable pinch to zoom, false to disable it

  - ### setNativeBrowserScrollingEnabled

    public void setNativeBrowserScrollingEnabled(PeerComponent browserPeer, boolean e)

    Allows disabling the browsers native scrolling on devices that support it

    ###### Parameters

    - `browserPeer`: browser instance

    - `e`: true to enables scrolling and false disables it

  - ### createBrowserComponent

    public PeerComponent createBrowserComponent(Object browserComponent)

    If the implementation supports the creation of a browser component it should be returned in this method

    ###### Parameters

    - `browserComponent`: instance of the browser component thru which events should be fired

    ###### Returns

    an instance of the native browser peer or null

  - ### postMessage

    public boolean postMessage(Object browserComponent, String message, String targetOrigin)

    Posts a message to the window in a BrowserComponent. This is intended to be an abstraction of the Javascript postMessage() API.

    This is only overridden by the Javascript port to provide proper CORS handling. Other ports use the implementation in BrowserComponent.

    Web pages wishing to receive messages via this mechanism should register a "message" event listener. See Javascript postMessage() docs for more details about this.

    ###### Parameters

    - `browserComponent`: The browser component peer.

    - `message`: The message to send

    - `targetOrigin`: The target origin for the message.

    ###### Returns

    True if the implementation handled the message. False to let BrowserComponent handle it in its default way.

    ###### Since

    7.0

    ###### See also

    - BrowserComponent#postMessage(java.lang.String, java.lang.String)

    - #installMessageListener(java.lang.Object)

    - #uninstallMessageListener(java.lang.Object)

  - ### installMessageListener

    public boolean installMessageListener(Object browserComponent)

    Installs a message listener to allow webpages inside a browser component to send messages to CN1 cross-domain.

    This will be overridden by the Javascript port only to handle CORS. Other ports use the default implementation in `BrowserComponent`.

    ###### Parameters

    - `browserComponent`: The browser component peer.

    ###### Returns

    True if a message listener was installed. False otherwise.

    ###### See also

    - #postMessage(java.lang.Object, java.lang.String, java.lang.String)

    - BrowserComponent#onMessage

    - BrowserComponent#postMessage(java.lang.String, java.lang.String)

  - ### uninstallMessageListener

    public boolean uninstallMessageListener(Object browserComponent)

    Uninstalls a message listener to allow webpages inside a browser component to send messages to CN1 cross-domain.

    This will be overridden by the Javascript port only to handle CORS. Other ports use the default implementation in `BrowserComponent`.

    ###### Parameters

    - `browserComponent`: The browser component peer.

    ###### Returns

    True if a message listener was installed. False otherwise.

    ###### See also

    - #postMessage(java.lang.Object, java.lang.String, java.lang.String)

    - BrowserComponent#onMessage

    - BrowserComponent#postMessage(java.lang.String, java.lang.String)

  - ### createNativeOverlay

    public Object createNativeOverlay(Component cmp)

    Creates a native overlay for the given component. A native overlay is a native component that is always present over the given component. It can be used to help processing user events in a more native way. In the Javascript port, native overlays are used on TextFields, for example, so that users can tap on the text field and activate the keyboard. This was necessary because iOS doesn't allow us to programmatically activate the keyboard. Without a native overlay, the user would first have to tap the lightweight keyboard - upon which we create a native text field, and then the user would have to tap again to activate the keyboard. Using native overlays in that case yields better UX.

    When using native overlays, you will need to implement `#createNativeOverlay(com.codename1.ui.Component)`, `java.lang.Object)`, and `java.lang.Object)`. `#createNativeOverlay(com.codename1.ui.Component)` is called in `Component#initComponent()` (i.e. when the component is added to the form). This is where you would create the native view and add it to the native view hierarchy above the CN1 canvas. `java.lang.Object)` is called in `Component#laidOut()` (i.e. when the component is resized/positioned). This is where you can reposition the native view or change its properties to be appropriate for the "occasion". `java.lang.Object)` is called in `Component#deinitialize()` (i.e. when the component is removed from the form). You should destroy the native view and remove it from the native view hierarchy here.

    ###### Parameters

    - `cmp`: The component to create the overlay for.

    ###### Returns

    A native object. The object type/format is decided by the implementation.

    ###### See also

    - #hideNativeOverlay(com.codename1.ui.Component, java.lang.Object)

    - #updateNativeOverlay(com.codename1.ui.Component, java.lang.Object)

    - Component#showNativeOverlay()

  - ### hideNativeOverlay

    public void hideNativeOverlay(Component cmp, Object nativeOverlay)

    Hides the native overlay for a component.

    ###### Parameters

    - `cmp`: The component

    - `nativeOverlay`: The native overlay.

    ###### See also

    - #createNativeOverlay(com.codename1.ui.Component)

    - #updateNativeOverlay(com.codename1.ui.Component, java.lang.Object)

    - Component#hideNativeOverlay()

  - ### updateNativeOverlay

    public void updateNativeOverlay(Component cmp, Object nativeOverlay)

    Updates the native overlay after the component has been repositioned.

    ###### Parameters

    - `cmp`: The component

    - `nativeOverlay`: The native overlay

    ###### See also

    - #createNativeOverlay(com.codename1.ui.Component)

    - #hideNativeOverlay(com.codename1.ui.Component, java.lang.Object)

    - Component#updateNativeOverlay()

  - ### setBrowserProperty

    public void setBrowserProperty(PeerComponent browserPeer, String key, Object value)

    This method allows customizing the properties of a web view in various ways including platform specific settings. When a property isn't supported by a specific platform it is just ignored.

    ###### Parameters

    - `browserPeer`: browser instance

    - `key`: see the documentation with the Codename One Implementation for further details

    - `value`: see the documentation with the Codename One Implementation for further details

  - ### getBrowserTitle

    public String getBrowserTitle(PeerComponent browserPeer)

    The page title

    ###### Parameters

    - `browserPeer`: browser instance

    ###### Returns

    the title

  - ### getBrowserURL

    public String getBrowserURL(PeerComponent browserPeer)

    The page URL

    ###### Parameters

    - `browserPeer`: browser instance

    ###### Returns

    the URL

  - ### captureBrowserScreenshot

    public AsyncResource<Image> captureBrowserScreenshot(PeerComponent browserPeer)

    Captures a screenshot from a browser component asynchronously.

    ###### Parameters

    - `browserPeer`: The browser instance

    ###### Returns

    Returns:

      AsyncResource resolving to an image of the snapshot. If this returns null, then `BrowserComponent#captureScreenshot()` will just use `Component#toImage()` for screenshots.

      ###### Since

      7.0

  - ### setBrowserPageInHierarchy

    public void setBrowserPageInHierarchy(PeerComponent browserPeer, String url) throws IOException

    Sets a relative URL from the html hierarchy

    ###### Parameters

    - `browserPeer`: the peer component

    - `url`: the url relative to the HTML directory

    Throws:
      `IOException`

  - ### setBrowserURL

    public void setBrowserURL(PeerComponent browserPeer, String url, Map<String,String> headers)

    Sets the page URL, jar: URL's must be supported by the implementation

    ###### Parameters

    - `browserPeer`: browser instance

    - `url`: the URL

    - `headers`: custom headers for the request URL

  - ### isURLWithCustomHeadersSupported

    public boolean isURLWithCustomHeadersSupported()

    Returns true if setBrowserURL with custom headers is supported

    ###### Returns

    returns false by default

  - ### setBrowserURL

    public void setBrowserURL(PeerComponent browserPeer, String url)

    Sets the page URL, jar: URL's must be supported by the implementation

    ###### Parameters

    - `browserPeer`: browser instance

    - `url`: the URL

  - ### browserReload

    public void browserReload(PeerComponent browserPeer)

    Reload the current page

    ###### Parameters

    - `browserPeer`: browser instance

  - ### browserHasBack

    public boolean browserHasBack(PeerComponent browserPeer)

    Indicates whether back is currently available

    ###### Parameters

    - `browserPeer`: browser instance

    ###### Returns

    true if back should work

  - ### browserHasForward

    public boolean browserHasForward(PeerComponent browserPeer)

    Indicates whether forward is currently available

    ###### Parameters

    - `browserPeer`: browser instance

    ###### Returns

    true if forward should work

  - ### browserBack

    public void browserBack(PeerComponent browserPeer)

    Navigates back in the history

    ###### Parameters

    - `browserPeer`: browser instance

  - ### browserStop

    public void browserStop(PeerComponent browserPeer)

    Stops loading the current page

    ###### Parameters

    - `browserPeer`: browser instance

  - ### browserDestroy

    public void browserDestroy(PeerComponent internal)

    Release browser native resources

    ###### Parameters

    - `internal`: browser instance

  - ### browserForward

    public void browserForward(PeerComponent browserPeer)

    Navigates forward in the history

    ###### Parameters

    - `browserPeer`: browser instance

  - ### browserClearHistory

    public void browserClearHistory(PeerComponent browserPeer)

    Clears navigation history

    ###### Parameters

    - `browserPeer`: browser instance

  - ### setBrowserPage

    public void setBrowserPage(PeerComponent browserPeer, String html, String baseUrl)

    Shows the given HTML in the native viewer

    ###### Parameters

    - `browserPeer`: browser instance

    - `html`: HTML web page

    - `baseUrl`: base URL to associate with the HTML

  - ### browserExecute

    public void browserExecute(PeerComponent browserPeer, String javaScript)

    Executes the given JavaScript string within the current context

    ###### Parameters

    - `browserPeer`: browser instance

    - `javaScript`: the JavaScript string

  - ### browserExecuteAndReturnString

    public String browserExecuteAndReturnString(PeerComponent internal, String javaScript)

    Executes javascript and returns string. The default implementation just wraps the browserExecute() method that doesn't return anything. It will return null always. You need to override this in the native implementation to return meaningful values.

    ###### Parameters

    - `internal`: The peer browser component.

    - `javaScript`: The javascript to execute.

    ###### Returns

    String result of the javascript expression.

  - ### supportsBrowserExecuteAndReturnString

    public boolean supportsBrowserExecuteAndReturnString(PeerComponent internal)

  - ### browserExposeInJavaScript

    public void browserExposeInJavaScript(PeerComponent browserPeer, Object o, String name)

    Allows exposing the given object to JavaScript code so the JavaScript code can invoke methods and access fields on the given object. Notice that on RIM devices which don't support reflection this object must implement the propriatery Scriptable interface http://www.blackberry.com/developers/docs/5.0.0api/net/rim/device/api/script/Scriptable.html

    ###### Parameters

    - `browserPeer`: browser instance

    - `o`: the object to invoke, notice all public fields and methods would be exposed to JavaScript

    - `name`: the name to expose within JavaScript

    ###### Deprecated

  - ### convertToPixels

    public int convertToPixels(int dipCount, boolean horizontal)

    Converts the dips count to pixels, dips are roughly 1mm in length. This is a very rough estimate and not to be relied upon

    ###### Parameters

    - `dipCount`: the dips that we will convert to pixels

    - `horizontal`: indicates pixels in the horizontal plane

    ###### Returns

    value in pixels

  - ### isTablet

    public boolean isTablet()

    Indicates whether the device is a tablet, notice that this is often a guess

    ###### Returns

    true if the device is assumed to be a tablet

  - ### isDesktop

    public boolean isDesktop()

    Returns true if this is a desktop application

    ###### Returns

    true if this is a desktop application

  - ### isWatch

    public boolean isWatch()

    Indicates whether the application is running on a smartwatch form factor (Apple Watch / Wear OS). Notice that this is often a guess derived from the device/skin metadata.

    ###### Returns

    true if the device is assumed to be a smartwatch

  - ### canDial

    public boolean canDial()

    Returns true if the device has dialing capabilities

    ###### Returns

    false if it cannot dial

  - ### setThreadPriority

    public void setThreadPriority(Thread t, int p)

    Allows an implementation to modify setting thread priority, some implementations don't handle thread priorities well

    ###### Parameters

    - `t`: the thread

    - `p`: the priority

  - ### postInit

    public void postInit()
    Callback allowing the implementation to perform an operation on the init thread after initialization was completed

  - ### initDefaultUserAgent

    protected void initDefaultUserAgent()
    Some old platforms might need this but for modern platforms the user agent should "just work".

  - ### setImageName

    public void setImageName(Object nativeImage, String name)

    Allows for easier debugging of native implementations by setting the image name to the native image object

    ###### Parameters

    - `nativeImage`: the native image

    - `name`: the name/file name identifying the image

  - ### areMutableImagesFast

    public boolean areMutableImagesFast()

    On most platforms it is quite fast to draw on a mutable image and then render that image, however some platforms have much slower mutable images in comparison to just drawing on the screen. These platforms should return false here and Codename One will try to use less mutable image related optimizations in transitions and other operations.

    ###### Returns

    true if mutable images are fast on this platform

  - ### removeCookiesForDomain

    protected final void removeCookiesForDomain(String domain)

  - ### addCookie

    public void addCookie(Cookie[] cookiesArray)

  - ### isNativeCookieSharingSupported

    public boolean isNativeCookieSharingSupported()

    Checks if this platform supports sharing cookies between Native components (e.g. BrowserComponent) and ConnectionRequests. Currently only Android and iOS ports support this.

    ###### Returns

    True if platform supports native cookie sharing.

    ###### Since

    8.0

  - ### addCookie

    public void addCookie(Cookie c)

    Adds/replaces a cookie to be sent to the given domain

    ###### Parameters

    - `c`: cookie to add

  - ### getURLDomain

    public String getURLDomain(String url)

    Returns the domain for the given URL

    ###### Parameters

    - `url`: a url

    ###### Returns

    the domain

  - ### getURLPath

    public String getURLPath(String url)

  - ### getCookiesForURL

    public Vector getCookiesForURL(String url)

    Returns the cookies for this URL

    ###### Parameters

    - `url`: the url on which we are checking for cookies

    ###### Returns

    the cookies to submit to the given URL

  - ### clearNativeCookies

    public void clearNativeCookies()

  - ### connect

    public abstract Object connect(String url, boolean read, boolean write) throws IOException

    Connects to a given URL, returns a connection object to be used with the implementation later

    ###### Parameters

    - `url`: the URL to connect to

    - `read`: indicates whether the connection will be read from

    - `write`: indicates whether writing will occur into the connection

    ###### Returns

    a URL instance

    Throws:
      `IOException`

  - ### getSSLCertificates

    public String[] getSSLCertificates(Object connection, String url) throws IOException

    Gets the SSL certificates for a connection

    ###### Parameters

    - `connection`: The connection.

    - `url`: The url of the connection.

    ###### Returns

    String array where each certificate is in form :

    ###### Throws

    - `IOException`
    Throws:
      `IOException`

  - ### canGetSSLCertificates

    public boolean canGetSSLCertificates()

    Checks if the platform supports getting SSL certificates.

    ###### Returns

    True if the platform supports SSL certificates.

  - ### checkSSLCertificatesRequiresCallbackFromNative

    public boolean checkSSLCertificatesRequiresCallbackFromNative()

    SSL certificate checks must be performed via a callback from the native side, rather than explicitly checking as part of NetworkManager's connection flow. This is mainly for iOS POST requests. If we try to get the SSL certs explicitly, it forces the connection to be sent without a POST body. Hence we need to let iOS do the check on the native side, and callback into Java to run the checkSSLCertificates method of the request.

    ###### Returns

    True if the platform requires a native callback fo check SSL certificates

  - ### setConnectionId

    public void setConnectionId(Object connection, int id)

  - ### addConnectionToQueue

    public void addConnectionToQueue(ConnectionRequest req)

    This method is called by the NetworkManager when a request is added to the queue. This allows the implementation to track the time that the request was queued for diagnostics purposes. The Simulator's Network monitor uses this information to display stats about each network connection.

    ###### Parameters

    - `req`: The ConnectionRequest that is queued.

  - ### connect

    public Object connect(String url, boolean read, boolean write, int timeout) throws IOException

    Connects to a given URL, returns a connection object to be used with the implementation later

    ###### Parameters

    - `url`: the URL to connect to

    - `read`: indicates whether the connection will be read from

    - `write`: indicates whether writing will occur into the connection

    - `timeout`: the timeout version of this method

    ###### Returns

    a URL instance

    Throws:
      `IOException`

  - ### setHttpMethod

    public void setHttpMethod(Object connection, String method) throws IOException

    Requests special http method such as put or delete

    ###### Parameters

    - `connection`: the connection object

    - `method`: the method string

    Throws:
      `IOException`

  - ### setHeader

    public abstract void setHeader(Object connection, String key, String val)

    Indicates the HTTP header value for an HTTP connection

    ###### Parameters

    - `connection`: the connection object

    - `key`: the key for the header

    - `val`: the value for the header

  - ### setChunkedStreamingMode

    public void setChunkedStreamingMode(Object connection, int bufferLen)

    This method is used to enable streaming of a HTTP request body without internal buffering, when the content length is not known in advance. In this mode, chunked transfer encoding is used to send the request body. Note, not all HTTP servers support this mode. This mode is supported on Android and the Desktop ports.

    ###### Parameters

    - `connection`: the connection object

    - `bufferLen`: @param bufferLen The number of bytes to write in each chunk. If chunklen is less than or equal to zero, a default value will be used.

  - ### cleanup

    public void cleanup(Object o)

    Closes the object (connection, stream etc.) without throwing any exception, even if the object is null

    ###### Parameters

    - `o`: Connection, Stream or other closeable object

  - ### isSetCursorSupported

    public boolean isSetCursorSupported()

    Checks if this platform supports custom cursors.

    ###### Returns

    True if the platform supports custom cursors.

    ###### See also

    - Form#setEnableCursors(boolean)

    - Component#setCursor(int)

    - ComponentSelector#setCursor(int)

  - ### getContentLength

    public abstract int getContentLength(Object connection)

    Returns the content length for this connection

    ###### Parameters

    - `connection`: the connection

    ###### Returns

    the content length

  - ### openOutputStream

    public abstract OutputStream openOutputStream(Object connection) throws IOException

    Returns an output stream for the given connection

    ###### Parameters

    - `connection`: the connection to open an output stream on

    ###### Returns

    the created output stream

    ###### Throws

    - `IOException`: thrown by underlying implemnetation
    Throws:
      `IOException`

  - ### openOutputStream

    public abstract OutputStream openOutputStream(Object connection, int offset) throws IOException

    Returns an output stream for the given connection

    ###### Parameters

    - `connection`: the connection to open an output stream on

    - `offset`: position in the file

    ###### Returns

    the created output stream

    ###### Throws

    - `IOException`: thrown by underlying implemnetation
    Throws:
      `IOException`

  - ### openInputStream

    public abstract InputStream openInputStream(Object connection) throws IOException

    Returns an input stream for the given connection

    ###### Parameters

    - `connection`: the connection to open an input stream on

    ###### Returns

    the created input stream

    ###### Throws

    - `IOException`: thrown by underlying implemnetation
    Throws:
      `IOException`

  - ### openFileOutputStream

    public OutputStream openFileOutputStream(String file) throws IOException

    Returns an output stream for the given file

    ###### Parameters

    - `file`: the file to which we should open a stream

    ###### Returns

    the created output stream

    ###### Throws

    - `IOException`: thrown by underlying implemnetation
    Throws:
      `IOException`

  - ### openFileInputStream

    public InputStream openFileInputStream(String file) throws IOException

    Returns an input stream for the given connection

    ###### Parameters

    - `file`: the file to which we should open a stream

    ###### Returns

    the created input stream

    ###### Throws

    - `IOException`: thrown by underlying implemnetation
    Throws:
      `IOException`

  - ### setPostRequest

    public abstract void setPostRequest(Object connection, boolean p)

    Indicates the whether the request method is GET or POST

    ###### Parameters

    - `connection`: the connection object

    - `p`: true for post false for get

  - ### getResponseCode

    public abstract int getResponseCode(Object connection) throws IOException

    Returns the server response code for the request

    ###### Parameters

    - `connection`: the connection object

    ###### Returns

    a numeric HTTP response code

    ###### Throws

    - `IOException`: if the request failed
    Throws:
      `IOException`

  - ### getResponseMessage

    public abstract String getResponseMessage(Object connection) throws IOException

    Returns the server response message for the request

    ###### Parameters

    - `connection`: the connection object

    ###### Returns

    a text message to go along with the response code

    ###### Throws

    - `IOException`: if the request failed
    Throws:
      `IOException`

  - ### getHeaderField

    public abstract String getHeaderField(String name, Object connection) throws IOException

    Returns the HTTP response header field

    ###### Parameters

    - `name`: field name for http header

    - `connection`: the connection object

    ###### Returns

    the value of the header field

    ###### Throws

    - `IOException`: if the request failed
    Throws:
      `IOException`

  - ### getHeaderFieldNames

    public abstract String[] getHeaderFieldNames(Object connection) throws IOException

    Returns the HTTP response header field

    ###### Parameters

    - `connection`: the connection object

    ###### Returns

    the value of the header field

    ###### Throws

    - `IOException`: if the request failed
    Throws:
      `IOException`

  - ### getHeaderFields

    public abstract String[] getHeaderFields(String name, Object connection) throws IOException

    Returns the HTTP response header fields, returns optionally more than one result or null if no field is present.

    ###### Parameters

    - `name`: field name for http header

    - `connection`: the connection object

    ###### Returns

    the values of the header fields

    ###### Throws

    - `IOException`: if the request failed
    Throws:
      `IOException`

  - ### isTimeoutSupported

    public boolean isTimeoutSupported()

    Indicates whether the underlying implementation supports the notion of a network operation timeout. If not timeout is "faked"

    ###### Returns

    true if HTTP timeout can be configured for this IO implementation

  - ### setTimeout

    public void setTimeout(int t)

    This will work only if http timeout is supported

    ###### Parameters

    - `t`: time in milliseconds

  - ### flushStorageCache

    public void flushStorageCache()
    Flush the storage cache allowing implementations that cache storage objects to store

  - ### getStorageData

    public Object getStorageData()

    The storage data is used by some storage implementations (e.g. CDC) to place the storage object in a "proper" location matching the application name. This needs to be set by the user, the name might be ignored in platforms (such as MIDP) where storage is mapped to a native application specific storage.

    ###### Returns

    the name for the storage

  - ### setStorageData

    public void setStorageData(Object storageData)

    The storage data is used by some storage implementations (e.g. CDC) to place the storage object in a "proper" location matching the application name. This needs to be set by the user, the name might be ignored in platforms (such as MIDP) where storage is mapped to a native application specific storage.

    ###### Parameters

    - `storageData`: the name for the storage or its context

  - ### deleteStorageFile

    public abstract void deleteStorageFile(String name)

    Deletes the given file name from the storage

    ###### Parameters

    - `name`: the name of the storage file

  - ### clearStorage

    public void clearStorage()
    Deletes all the files in the application storage

  - ### createStorageOutputStream

    public abstract OutputStream createStorageOutputStream(String name) throws IOException

    Creates an output stream to the storage with the given name

    ###### Parameters

    - `name`: the storage file name

    ###### Returns

    an output stream of limited capcity

    Throws:
      `IOException`

  - ### createStorageInputStream

    public abstract InputStream createStorageInputStream(String name) throws IOException

    Creates an input stream to the given storage source file

    ###### Parameters

    - `name`: the name of the source file

    ###### Returns

    the input stream

    Throws:
      `IOException`

  - ### storageFileExists

    public abstract boolean storageFileExists(String name)

    Returns true if the given storage file exists

    ###### Parameters

    - `name`: the storage file name

    ###### Returns

    true if it exists

  - ### listStorageEntries

    public abstract String[] listStorageEntries()

    Lists the names of the storage files

    ###### Returns

    the names of all the storage files

  - ### getStorageEntrySize

    public int getStorageEntrySize(String name)

    Returns the size of the entry in bytes

    ###### Parameters

    - `name`: the entry name

    ###### Returns

    the size

  - ### listFilesystemRoots

    public abstract String[] listFilesystemRoots()

    Returns the filesystem roots from which the structure of the file system can be traversed

    ###### Returns

    the roots of the filesystem

  - ### listFiles

    public abstract String[] listFiles(String directory) throws IOException

    Lists the files within the given directory, returns relative file names and not full file names.

    ###### Parameters

    - `directory`: the directory in which files should be listed

    ###### Returns

    array of file names

    Throws:
      `IOException`

  - ### getRootSizeBytes

    public abstract long getRootSizeBytes(String root)

    Returns the size of the given root directory

    ###### Parameters

    - `root`: the root directory in the filesystem

    ###### Returns

    the byte size of the directory

  - ### getRootAvailableSpace

    public abstract long getRootAvailableSpace(String root)

    Returns the available space in the given root directory

    ###### Parameters

    - `root`: the root directory in the filesystem

    ###### Returns

    the bytes available in the directory

  - ### mkdir

    public abstract void mkdir(String directory)

    Creates the given directory

    ###### Parameters

    - `directory`: the directory name to create

  - ### deleteFile

    public abstract void deleteFile(String file)

    Deletes the specific file or empty directory.

    ###### Parameters

    - `file`: file or empty directory to delete

  - ### isHidden

    public abstract boolean isHidden(String file)

    Indicates the hidden state of the file

    ###### Parameters

    - `file`: file

    ###### Returns

    true for a hidden file

  - ### setHidden

    public abstract void setHidden(String file, boolean h)

    Toggles the hidden state of the file

    ###### Parameters

    - `file`: file

    - `h`: hidden state

  - ### getFileLength

    public abstract long getFileLength(String file)

    Returns the length of the file

    ###### Parameters

    - `file`: file

    ###### Returns

    length of said file

  - ### getFileLastModified

    public long getFileLastModified(String file)

    Returns the time that the file denoted by this abstract pathname was last modified.

    ###### Returns

    Returns:
      A long value representing the time the file was last modified, measured in milliseconds

  - ### isDirectory

    public abstract boolean isDirectory(String file)

    Indicates whether the given file is a directory

    ###### Parameters

    - `file`: file

    ###### Returns

    true if its a directory

  - ### exists

    public abstract boolean exists(String file)

    Indicates whether the given file exists

    ###### Parameters

    - `file`: file

    ###### Returns

    true if it exists

  - ### rename

    public abstract void rename(String file, String newName)

    Renames a file to the given name, expects the new name to be relative to the current directory

    ###### Parameters

    - `file`: absolute file name

    - `newName`: relative new name

  - ### getFileSystemSeparator

    public abstract char getFileSystemSeparator()

    Returns the file system separator char normally '/'

    ###### Returns

    the separator char

  - ### getLineSeparator

    public String getLineSeparator()

  - ### isAPSupported

    public boolean isAPSupported()

    Indicates whether looking up an access point is supported by this device

    ###### Returns

    true if access point lookup is supported

  - ### getAPIds

    public String[] getAPIds()

    Returns the ids of the access points available if supported

    ###### Returns

    ids of access points

  - ### getAPType

    public int getAPType(String id)

    Returns the type of the access point

    ###### Parameters

    - `id`: access point id

    ###### Returns

    one of the supported access point types from network manager

  - ### getAPName

    public String getAPName(String id)

    Returns the user displayable name for the given access point

    ###### Parameters

    - `id`: the id of the access point

    ###### Returns

    the name of the access point

  - ### getCurrentAccessPoint

    public String getCurrentAccessPoint()

    Returns the id of the current access point

    ###### Returns

    id of the current access point

  - ### setCurrentAccessPoint

    public void setCurrentAccessPoint(String id)

    Returns the id of the current access point

    ###### Parameters

    - `id`: id of the current access point

  - ### isVPNDetectionSupported

    public boolean isVPNDetectionSupported()

    Indicates whether this platform can attempt to detect active VPN usage.

    The default implementation returns `false`. Platforms that provide a best-effort VPN heuristic should override this method and `#isVPNActive()`.

    ###### Returns

    `true` if VPN detection is implemented on this platform.

  - ### isVPNActive

    public boolean isVPNActive()

    Best-effort check for whether a VPN appears to be active.

    This API is intentionally heuristic and should not be used as a security boundary. False positives and false negatives are both possible, and some VPN products may avoid detection completely.

    ###### Returns

    `true` if the platform believes a VPN may be active.

  - ### getWifiPlatform

    public final WifiPlatform getWifiPlatform()

  - ### createWifiPlatform

    protected WifiPlatform createWifiPlatform()
    Platform ports override to return their WiFi implementation. The default returns `null`, which the caller turns into the unsupported stub built into `WifiPlatform`.

  - ### getWifiDirectPlatform

    public final WifiDirectPlatform getWifiDirectPlatform()

  - ### createWifiDirectPlatform

    protected WifiDirectPlatform createWifiDirectPlatform()

  - ### getBonjourPlatform

    public final BonjourPlatform getBonjourPlatform()

  - ### createBonjourPlatform

    protected BonjourPlatform createBonjourPlatform()

  - ### getUsbPlatform

    public final UsbPlatform getUsbPlatform()

  - ### createUsbPlatform

    protected UsbPlatform createUsbPlatform()

  - ### getNetworkTypePlatform

    public final NetworkTypePlatform getNetworkTypePlatform()

  - ### createNetworkTypePlatform

    protected NetworkTypePlatform createNetworkTypePlatform()

  - ### shouldWriteUTFAsGetBytes

    public boolean shouldWriteUTFAsGetBytes()

    For some reason the standard code for writing UTF8 output in a server request doesn't work as expected on SE/CDC stacks.

    ###### Returns

    true if the getBytes() approach should be used

  - ### startThread

    public void startThread(String name, Runnable r)

    Some devices need more elaborate thread creation logic e.g. to increase the default stack size or might use a pooling strategy

    ###### Parameters

    - `name`: the name of the thread

    - `r`: the runnable

  - ### closingOutput

    public void closingOutput(OutputStream s)

    Allows binding logic to occur before closing the output stream such as syncing

    ###### Parameters

    - `s`: the closing stream

  - ### printStackTraceToStream

    public void printStackTraceToStream(Throwable t, Writer o)

    Allows the logger to print the stack trace into the log when the native platform supports that

    ###### Parameters

    - `t`: the exception

    - `o`: the writer

  - ### setLogListener

    public void setLogListener(ActionListener al)

    This method is useful strictly for debugging, the logger can use it to track file opening/closing thus detecting potential file resource leaks that can cause serious problems in some OS's.

    ###### Parameters

    - `al`: action listener to receive the callback

  - ### isLogged

    protected boolean isLogged()

    Indicates whether logging is turned on

    ###### Returns

    true or false

  - ### log

    protected void log(String content)

    Dispatch the message to the logger

    ###### Parameters

    - `content`: content of the message

  - ### systemOut

    public void systemOut(String content)

    System print

    ###### Parameters

    - `content`

  - ### logStreamCreate

    public void logStreamCreate(String name, boolean isInput, int count)

    Logs the creation of a stream

    ###### Parameters

    - `name`: the name of the stream

    - `isInput`: whether the stream is an input or output stream

    - `count`: the number of streams of this type

  - ### logStreamClose

    public void logStreamClose(String name, boolean isInput, int count)

    Logs the closing of a stream

    ###### Parameters

    - `name`: the name of the stream

    - `isInput`: whether the stream is an input or output stream

    - `count`: the number of streams of this type

  - ### logStreamDoubleClose

    public void logStreamDoubleClose(String name, boolean isInput)

    Logs the closing of a stream

    ###### Parameters

    - `name`: the name of the stream

    - `isInput`: whether the stream is an input or output stream

  - ### getRootType

    public int getRootType(String root)

    Returns the type of the root often by guessing

    ###### Parameters

    - `root`: the root whose type we are checking

    ###### Returns

    one of the type constants above

  - ### getLocationManager

    public LocationManager getLocationManager()

    This method returns the platform Location Control

    ###### Returns

    LocationManager Object

  - ### getBiometrics

    public Biometrics getBiometrics()
    Returns the port-specific biometric authentication entry point. Default implementation returns `null`; ports that support biometrics override this to return a cached singleton. Application code should use `Biometrics.getInstance()` instead of calling this directly --- it transparently substitutes a no-op fallback when the port returns `null`.

  - ### getSecureStorage

    public SecureStorage getSecureStorage()
    Returns the port-specific biometric-gated secure storage. Default implementation returns `null`; ports that back the keychain override this. Application code should call `SecureStorage.getInstance()` instead.

  - ### getNfc

    public Nfc getNfc()
    Returns the port-specific NFC entry point. Default implementation returns `null`; ports that implement `Nfc` override this to return a cached singleton. Application code should use `Nfc.getInstance()` instead of calling this directly --- it transparently substitutes a no-op fallback when the port returns `null`.

  - ### releaseImage

    public void releaseImage(Object image)

    Allows buggy implementations (Android) to release image objects

    ###### Parameters

    - `image`: native image object

  - ### capturePhoto

    public void capturePhoto(ActionListener response)

    Captures a photo and notifies with the image data when available

    ###### Parameters

    - `response`: callback for the resulting image

  - ### captureScreen

    public Image captureScreen()

    Captures a screenshot of the screen.

    ###### Returns

    An image of the screen, or null if it failed.

    ###### Since

    7.0

    ###### Deprecated

    replaced by screenshot()

  - ### captureAudio

    public void captureAudio(ActionListener<ActionEvent> response)

  - ### getSharedJavscriptContext

    public final BrowserComponent getSharedJavscriptContext()

    Gets a reference to an application-wide shared Javascript context that can be used for running Javascript commands. When running in the Javascript port, this Javascript context will be the same context in which the application itself is running, so it gives you the ability to interact with the browser and DOM directly using the familiar `BrowserComponent` API.

    When running on other platforms, this shared context will be an off-screen browser component.

    ###### Returns

    A shared BrowserComponent

    ###### Since

    7.0

  - ### createSharedJavascriptContext

    protected BrowserComponent createSharedJavascriptContext()

    Creates a shared javascript context. This can be overridden by ports to return a special browser component. On the Javascript port it returns a special component that encapsulates the browser environment that the application is running in.

    ###### Returns

    A shared BrowserComponent

    ###### Since

    7.0

  - ### captureAudio

    public void captureAudio(MediaRecorderBuilder recordingOptions, ActionListener<ActionEvent> response)

    Captures a audio and notifies with the raw data when available

    ###### Parameters

    - `response`: callback for the resulting data

  - ### captureVideo

    public void captureVideo(ActionListener response)

    Captures a video and notifies with the data when available

    ###### Parameters

    - `response`: callback for the resulting video

  - ### captureVideo

    public void captureVideo(VideoCaptureConstraints constraints, ActionListener response)

    Captures a video, and notifies with the data when available. This version accepts capture constraints which may be used if the platform supports them.

    ###### Parameters

    - `constraints`: Constraints for the capture.

    - `response`: Callback for the resulting video.

    ###### Since

    7.0

    ###### See also

    - com.codename1.capture.Capture#captureVideo(com.codename1.capture.VideoCaptureConstraints, com.codename1.ui.events.ActionListener)

  - ### isGalleryTypeSupported

    public boolean isGalleryTypeSupported(int type)

    Checks if the given gallery type is supported on this platform.

    ###### Parameters

    - `type`: A gallery type constant. E.g. `CN1Constants#GALLERY_IMAGE`, `CN1Constants#GALLERY_VIDEO`, `CN1Constants#GALLERY_ALL`, `CN1Constants#GALLERY_IMAGE_MULTI`, `CN1Constants#GALLERY_VIDEO_MULTI`, `CN1Constants#GALLERY_ALL_MULTI`

    ###### Returns

    True if the gallery type is supported on this platform.

  - ### openGallery

    public void openGallery(ActionListener response, int type)

    Opens the device gallery The method returns immediately and the response will be sent asynchronously to the given ActionListener Object

    use this in the actionPerformed to retrieve the file path String path = (String) evt.getSource();

    ###### Parameters

    - `response`: a callback Object to retrieve the file path

    - `type`: one of the following GALLERY_IMAGE, GALLERY_VIDEO, GALLERY_ALL

    ###### Throws

    - `RuntimeException`: if this feature failed or unsupported on the platform

  - ### openImageGallery

    public void openImageGallery(ActionListener response)

    Opens the device image gallery

    ###### Parameters

    - `response`: callback for the resulting image

  - ### getPlatformName

    public abstract String getPlatformName()

    Returns a 2-3 letter code representing the platform name for the platform override

    ###### Returns

    the name of the platform e.g. ios, rim, win, and, me

  - ### getPlatformOverrides

    public String[] getPlatformOverrides()

    Returns the suffixes for ovr files that should be used when loading a layered resource file on this platform

    ###### Returns

    a string array with the proper order of resource override layers

  - ### shouldAutoDetectAccessPoint

    public boolean shouldAutoDetectAccessPoint()
    This callback allows highly broken devices like the blackberry to automatically detect the network type

  - ### sendMessage

    public void sendMessage(String[] recipients, String subject, Message msg)

    Send an email using the platform mail client

    ###### Parameters

    - `recipients`: array of e-mail addresses

    - `subject`: e-mail subject

    - `msg`: the Message to send

  - ### dial

    public void dial(String phoneNumber)

    Opens the device Dialer application with the given phone number

    ###### Parameters

    - `phoneNumber`

  - ### isCallDetectionSupported

    public boolean isCallDetectionSupported()

    Indicates whether this platform can attempt to detect when an active phone call is interrupting the app.

    The default implementation returns `false`. Platforms with a best-effort call interruption heuristic should override this method and `#isInCall()`.

    ###### Returns

    `true` if call detection is implemented on this platform.

  - ### isInCall

    public boolean isInCall()

    Best-effort check for whether the platform believes a phone call is active.

    This API is intentionally heuristic and should not be treated as a reliable telephony state machine. Depending on platform restrictions it may report false positives (e.g. other interruptions that temporarily move the app out of the foreground) and false negatives (e.g. calls that are never surfaced to the app lifecycle).

    ###### Returns

    `true` if the platform currently believes a phone call interruption is active.

  - ### sendSMS

    public void sendSMS(String phoneNumber, String message, boolean interactive) throws IOException

    Sends a SMS message to the given phone number

    ###### Parameters

    - `phoneNumber`: to send the sms

    - `message`: the content of the sms

    ###### Throws

    - `IOException`: if for some reason sending failed
    Throws:
      `IOException`

  - ### getSMSSupport

    public int getSMSSupport()

    Indicates the level of SMS support in the platform as one of: SMS_NOT_SUPPORTED (for desktop, tablet etc.), SMS_SEAMLESS (no UI interaction), SMS_INTERACTIVE (with compose UI), SMS_BOTH.

    ###### Returns

    one of the SMS_* values

  - ### getApplicationIconImage

    public Image getApplicationIconImage()
    Returns an image representing the application icon, or null if not supported. This is used on Android to support the title bar icon

  - ### getAllContacts

    public String[] getAllContacts(boolean withNumbers)

    Gets all contacts from the address book of the device

    ###### Parameters

    - `withNumbers`: if true returns only contacts that has a number

    ###### Returns

    array of contacts unique ids

  - ### getLinkedContactIds

    public String[] getLinkedContactIds(Contact c)

    Gets the IDs of all contacts that are linked to the provided contact.

    ###### Parameters

    - `c`: The contact

    ###### Returns

    Array of IDs for contacts that are linked to `c`.

  - ### getContactById

    public Contact getContactById(String id)

    Get a Contact according to it's contact id.

    ###### Parameters

    - `id`: unique id of the Contact

    ###### Returns

    a Contact Object

  - ### getAllContacts

    public Contact[] getAllContacts(boolean withNumbers, boolean includesFullName, boolean includesPicture, boolean includesNumbers, boolean includesEmail, boolean includeAddress)

    Notice: this method might be very slow and should be invoked on a separate thread! It might have platform specific optimizations over getAllContacts followed by looping over individual contacts but that isn't guaranteed. See isGetAllContactsFast for information.

    ###### Parameters

    - `withNumbers`: if true returns only contacts that has a number

    - `includesFullName`: if true try to fetch the full name of the Contact(not just display name)

    - `includesPicture`: if true try to fetch the Contact Picture if exists

    - `includesNumbers`: if true try to fetch all Contact numbers

    - `includesEmail`: if true try to fetch all Contact Emails

    - `includeAddress`: if true try to fetch all Contact Addresses

    ###### Returns

    array of the contacts

  - ### isGetAllContactsFast

    public boolean isGetAllContactsFast()

    Indicates if the getAllContacts is platform optimized, notice that the method might still take seconds or more to run so you should still use a separate thread!

    ###### Returns

    true if getAllContacts will perform faster that just getting each contact

  - ### getContactById

    public Contact getContactById(String id, boolean includesFullName, boolean includesPicture, boolean includesNumbers, boolean includesEmail, boolean includeAddress)

    This method returns a Contact by the contact id and fills it's data according to the given flags

    ###### Parameters

    - `id`: of the Contact

    - `includesFullName`: if true try to fetch the full name of the Contact(not just display name)

    - `includesPicture`: if true try to fetch the Contact Picture if exists

    - `includesNumbers`: if true try to fetch all Contact numbers

    - `includesEmail`: if ture try to fetch all Contact Emails

    - `includeAddress`: if ture try to fetch all Contact Addresses

    ###### Returns

    a Contact Object

  - ### createContact

    public String createContact(String firstName, String surname, String officePhone, String homePhone, String cellPhone, String email)

    Create a contact to the device contacts book

    ###### Parameters

    - `firstName`: the Contact firstName

    - `surname`: the Contact familyName

    - `officePhone`: the Contact work phone or null

    - `homePhone`: the Contact home phone or null

    - `cellPhone`: the Contact mobile phone or null

    - `email`: the Contact email or null

    ###### Returns

    the contact id if creation succeeded or null if failed

  - ### isContactsPermissionGranted

    public boolean isContactsPermissionGranted()

    Some platforms allow the user to block contacts access on a per application basis (specifically iOS).

    ###### Returns

    true if contacts access is allowed or globally available, false otherwise

  - ### deleteContact

    public boolean deleteContact(String id)

    removed a contact from the device contacts book

    ###### Parameters

    - `id`: the contact id to remove

    ###### Returns

    true if deletion succeeded false otherwise

  - ### isNativeShareSupported

    public boolean isNativeShareSupported()

    Indicates if the underlying platform supports sharing capabilities

    ###### Returns

    true if the underlying platform handles share.

  - ### share

    public void share(String text, String image, String mimeType)

    Share the required information using the platform sharing services. a Sharing service can be: mail, sms, facebook, twitter,... This method is implemented if isNativeShareSupported() returned true for a specific platform.

    ###### Parameters

    - `text`: String to share.

    - `image`: file path to the image or null

    - `mimeType`: type of the image or null if no image to share

  - ### share

    public void share(String text, String image, String mimeType, Rectangle sourceRect)

    Share the required information using the platform sharing services. a Sharing service can be: mail, sms, facebook, twitter,... This method is implemented if isNativeShareSupported() returned true for a specific platform.

    ###### Parameters

    - `text`: String to share.

    - `image`: file path to the image or null

    - `mimeType`: type of the image or null if no image to share

    - `sourceRect`: @param sourceRect The bounds of the button that was clicked to initiate the share. This is used by some platforms (e.g. iPad2 on iOS 8 or higher) to dictate where the popover dialog should be placed.

  - ### share

    public void share(String text, String image, String mimeType, Rectangle sourceRect, ShareResultListener listener)

    Share variant that delivers an outcome through `listener`.

    The default implementation delegates to the legacy `share(String,String,String,Rectangle)` entry point and reports `SHARED_TO(null)` once it returns, since this base class has no way to observe the platform sheet. Ports that can observe the result (iOS, Android API 22+) override this method.

    `listener` is guaranteed non-null by `Display.share(String)`.

  - ### isPrintingSupported

    public boolean isPrintingSupported()

    Indicates if the underlying platform can print documents through `print(String,String,PrintResultListener)`.

    ###### Returns

    true if the underlying platform handles printing.

  - ### print

    public void print(String filePath, String mimeType, PrintResultListener listener)

    Print a document file through the platform printing system, typically showing the native print dialog. The default implementation reports failure since this base class has no printing capability. Ports that can print override this method.

    ###### Parameters

    - `filePath`: path of the document in file system storage

    - `mimeType`: the document type, e.g. `application/pdf`, `image/png`

    - `listener`: callback for the print outcome. May be null.

  - ### beforeComponentPaint

    public void beforeComponentPaint(Component c, Graphics g)

    Called before internal paint of component starts

    ###### Parameters

    - `c`: the component about to be painted

  - ### afterComponentPaint

    public void afterComponentPaint(Component c, Graphics g)

    Called after internal paint of component finishes

    ###### Parameters

    - `c`: the component that was painted

  - ### nothingWithinComponentPaint

    public void nothingWithinComponentPaint(Component c)

    Indicates to the port that the component won't be painted due to clipping

    ###### Parameters

    - `c`: the component that won't be painted

  - ### componentRemoved

    public void componentRemoved(Component c)

    Indicates to the port that the component was removed from the view and its UI should be removed in the next flush operation.

    ###### Parameters

    - `c`: the removed component.

  - ### getLocalizationManager

    public abstract L10NManager getLocalizationManager()

    Gets the localization manager instance for this implementation.

    ###### Returns

    The localization manager.

  - ### getPackageName

    protected String getPackageName()
    Returns the package name for the application

  - ### isTransformSupported

    public boolean isTransformSupported()

    Checks if the Transform class can be used on this platform. This is similar to `#isTransformSupported(java.lang.Object)` but it is more general as it only verifies that transforms can be performed, but not necessarily that they will be respected by any particular graphics context.

    ###### Returns

    True if this platform supports transforms.

    ###### See also

    - #isTransformSupported(java.lang.Object)

  - ### isPerspectiveTransformSupported

    public boolean isPerspectiveTransformSupported()

    Checks of the Transform class can be used on this platform to perform perspective transforms. This is similar to `#isPerspectiveTransformSupported(java.lang.Object)` but it is more general as it only verifies that transforms can be performed, but not necessarily that they will be respected by any particular graphics context.

    ###### Returns

    True if this platform supports perspective transforms.

  - ### transformEqualsImpl

    public boolean transformEqualsImpl(Transform t1, Transform t2)

  - ### transformNativeEqualsImpl

    public boolean transformNativeEqualsImpl(Object t1, Object t2)

  - ### makeTransformTranslation

    public Object makeTransformTranslation(float translateX, float translateY, float translateZ)

    Makes a new native translation transform. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Parameters

    - `translateX`: The x-coordinate of the translation.

    - `translateY`: The y-coordinate of the translation.

    - `translateZ`: The z-coordinate of the translation.

    ###### Returns

    A native transform object encapsulating the specified translation.

    ###### See also

    - #isTransformSupported()

  - ### setTransformTranslation

    public void setTransformTranslation(Object nativeTransform, float translateX, float translateY, float translateZ)

  - ### makeTransformScale

    public Object makeTransformScale(float scaleX, float scaleY, float scaleZ)

    Makes a new native scale transform. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Parameters

    - `scaleX`: The x-scale factor of the transform.

    - `scaleY`: The y-scale factor of the transform.

    - `scaleZ`: The z-scale factor of the transform.

    ###### Returns

    A native transform object encapsulating the specified scale.

    ###### See also

    - #isTransformSupported()

  - ### makeTransformAffine

    public Object makeTransformAffine(double m00, double m10, double m01, double m11, double m02, double m12)

    Makes a transform given the specified AffineTransform values.

    ###### Parameters

    - `m00`: the X coordinate scaling element of the 3x3 matrix

    - `m10`: the Y coordinate shearing element of the 3x3 matrix

    - `m01`: the X coordinate shearing element of the 3x3 matrix

    - `m11`: the Y coordinate scaling element of the 3x3 matrix

    - `m02`: the X coordinate translation element of the 3x3 matrix

    - `m12`: the Y coordinate translation element of the 3x3 matrix

    ###### Since

    7.0

  - ### setTransformAffine

    public void setTransformAffine(Object nativeTransform, double m00, double m10, double m01, double m11, double m02, double m12)

    Sets transform to the given specified AffineTransform values.

    ###### Parameters

    - `nativeTransform`: Platform-specific native transform.

    - `m00`: the X coordinate scaling element of the 3x3 matrix

    - `m10`: the Y coordinate shearing element of the 3x3 matrix

    - `m01`: the X coordinate shearing element of the 3x3 matrix

    - `m11`: the Y coordinate scaling element of the 3x3 matrix

    - `m02`: the X coordinate translation element of the 3x3 matrix

    - `m12`: the Y coordinate translation element of the 3x3 matrix

    ###### Since

    7.0

  - ### setTransformScale

    public void setTransformScale(Object nativeTransform, float scaleX, float scaleY, float scaleZ)

  - ### makeTransformRotation

    public Object makeTransformRotation(float angle, float x, float y, float z)

    Makes a new native rotation transform. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Parameters

    - `angle`: The angle to rotate.

    - `x`: The x-component of the vector around which to rotate.

    - `y`: The y-component of the vector around which to rotate.

    - `z`: The z-component of the vector around which to rotate.

    ###### Returns

    A native transform object encapsulating the specified rotation.

    ###### See also

    - #isTransformSupported()

  - ### setTransformRotation

    public void setTransformRotation(Object nativeTransform, float angle, float x, float y, float z)

  - ### makeTransformPerspective

    public Object makeTransformPerspective(float fovy, float aspect, float zNear, float zFar)

    Makes a new perspective transform. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isPerspectiveTransformSupported()` returns true.

    ###### Parameters

    - `fovy`: The y field of view angle.

    - `aspect`: The aspect ratio.

    - `zNear`: The nearest visible z coordinate.

    - `zFar`: The farthest z coordinate.

    ###### Returns

    A native transform object encapsulating the given perspective.

    ###### See also

    - #isPerspectiveTransformSupported()

  - ### setTransformPerspective

    public void setTransformPerspective(Object nativeTransform, float fovy, float aspect, float zNear, float zFar)

  - ### makeTransformOrtho

    public Object makeTransformOrtho(float left, float right, float bottom, float top, float near, float far)

    Makes a new orthographic projection transform. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isPerspectiveTransformSupported()` returns true.

    ###### Parameters

    - `left`: x-coordinate that is the left edge of the view.

    - `right`: The x-coordinate that is the right edge of the view.

    - `bottom`: The y-coordinate that is the bottom edge of the view.

    - `top`: The y-coordinate that is the top edge of the view.

    - `near`: The nearest visible z-coordinate.

    - `far`: The farthest visible z-coordinate.

    ###### Returns

    A native transform with the provided orthographic projection.

    ###### See also

    - #isPerspectiveTransformSupported()

  - ### setTransformOrtho

    public void setTransformOrtho(Object nativeTransform, float left, float right, float bottom, float top, float near, float far)

  - ### makeTransformCamera

    public Object makeTransformCamera(float eyeX, float eyeY, float eyeZ, float centerX, float centerY, float centerZ, float upX, float upY, float upZ)

    Makes a transform to simulate a camera's perspective at a given location. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Parameters

    - `eyeX`: The x-coordinate of the camera's eye.

    - `eyeY`: The y-coordinate of the camera's eye.

    - `eyeZ`: The z-coordinate of the camera's eye.

    - `centerX`: The center x coordinate of the view.

    - `centerY`: The center y coordinate of the view.

    - `centerZ`: The center z coordinate of the view.

    - `upX`: The x-coordinate of the up vector for the camera.

    - `upY`: The y-coordinate of the up vector for the camera.

    - `upZ`: The z-coordinate of the up vector for the camera.

    ###### Returns

    A native transform with the provided camera's view perspective.

    ###### See also

    - #isPerspectiveTransformSupported()

  - ### setTransformCamera

    public void setTransformCamera(Object nativeTransform, float eyeX, float eyeY, float eyeZ, float centerX, float centerY, float centerZ, float upX, float upY, float upZ)

  - ### transformRotate

    public void transformRotate(Object nativeTransform, float angle, float x, float y, float z)

    Rotates the provided transform.

    ###### Parameters

    - `nativeTransform`: @param nativeTransform The transform to rotate. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    - `angle`: The angle to rotate.

    - `x`: The x-coordinate of the vector around which to rotate.

    - `y`: The y-coordinate of the vector around which to rotate.

    - `z`: The z-coordinate of the vector around which to rotate.

    ###### See also

    - #isTransformSupported()

  - ### transformTranslate

    public void transformTranslate(Object nativeTransform, float x, float y, float z)

    Translates the transform by the specified amounts. with the specified translation.

    ###### Parameters

    - `nativeTransform`: @param nativeTransform The native transform to translate. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    - `x`: The x translation.

    - `y`: The y translation.

    - `z`: The z translation.

    ###### See also

    - #isTransformSupported()

  - ### transformScale

    public void transformScale(Object nativeTransform, float x, float y, float z)

    Scales the provided transform by the provide scale factors.

    ###### Parameters

    - `nativeTransform`: @param nativeTransform Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    - `x`: The x-scale factor

    - `y`: The y-scale factor

    - `z`: The z-scale factor

    ###### See also

    - #isTransformSupported()

  - ### makeTransformInverse

    public Object makeTransformInverse(Object nativeTransform)

    Gets the inverse transformation for the provided transform.

    ###### Parameters

    - `nativeTransform`: @param nativeTransform The native transform of which to make the inverse. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Returns

    Returns:

      The inverse transform as a native transform object. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

      ###### See also

      - #isTransformSupported()

  - ### setTransformInverse

    public void setTransformInverse(Object nativeTransform) throws Transform.NotInvertibleException
    Throws:
      `Transform.NotInvertibleException`

  - ### makeTransformIdentity

    public Object makeTransformIdentity()

    Makes a new identity native transform. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Returns

    An identity native transform.

    ###### See also

    - #isTransformSupported()

  - ### setTransformIdentity

    public void setTransformIdentity(Object transform)

    Sets the given native transform to the identiy transform

    ###### Parameters

    - `transform`

  - ### copyTransform

    public void copyTransform(Object src, Object dest)

    Copies the setting of one transform into another. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format. This is used by the `com.codename1.ui.Transform` class.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Parameters

    - `src`: The source native transform.

    - `dest`: The destination native transform.

    ###### See also

    - #isTransformSupported()

  - ### concatenateTransform

    public void concatenateTransform(Object t1, Object t2)

    Concatenates two transforms and sets the first transform to be the result of the concatenation.

    This can only be used if `#isTransformSupported()` returns true.

    ###### Parameters

    - `t1`: The left native transform. The result will also be stored in this transform.

    - `t2`: The right native transform.

    ###### See also

    - #isTransformSupported()

  - ### transformPoint

    public void transformPoint(Object nativeTransform, float[] in, float[] out)

    Transforms a point and stores the result in a provided array.

    ###### Parameters

    - `nativeTransform`: @param nativeTransform The native transform to use for the transformation. Each implementation can decide the format to use internally for transforms. This should return a transform in that internal format.

    This can only be used if `#isTransformSupported()` returns true.

    This is used by the `com.codename1.ui.Transform` class.

    - `in`: A 2 or 3 element array representing either an (x,y) or (x,y,z) tuple to be transformed.

    - `out`: A 2 or 3 element array (length should match `in`) to store the result of the transformation.

    ###### See also

    - #isTransformSupported()

  - ### transformPoints

    public void transformPoints(Object nativeTransform, int pointSize, float[] in, int srcPos, float[] out, int destPos, int numPoints)

    Transforms a set of points using the provided transform.

    ###### Parameters

    - `nativeTransform`: The transform to use for transforming the points

    - `pointSize`: The size of the points (either 2 or 3)

    - `in`: Input array of points.

    - `srcPos`: The start position of the input array

    - `out`: The output array of points

    - `destPos`: The start position of the output array.

    - `numPoints`: The number of points to transform.

  - ### translatePoints

    public void translatePoints(int pointSize, float tX, float tY, float tZ, float[] in, int srcPos, float[] out, int destPos, int numPoints)

    Translates a set of points.

    ###### Parameters

    - `pointSize`: The size of each point (2 or 3)

    - `tX`: Size of translation along x-axis

    - `tY`: Size of translation along y-axis

    - `tZ`: Size of translation along z-axis (only used if pointSize == 3)

    - `in`: Input array of points.

    - `srcPos`: Start position in input array

    - `out`: Output array of points

    - `destPos`: Start position in output array

    - `numPoints`: Number of points to translate.

  - ### scalePoints

    public void scalePoints(int pointSize, float sX, float sY, float sZ, float[] in, int srcPos, float[] out, int destPos, int numPoints)

    Scales a set of points.

    ###### Parameters

    - `pointSize`: The size of each point (2 or 3)

    - `sX`: Scale factor along x-axis

    - `sY`: Scale factor along y-axis

    - `sZ`: Scale factor along z-axis (only used if pointSize == 3)

    - `in`: Input array of points.

    - `srcPos`: Start position in input array

    - `out`: Output array of points

    - `destPos`: Start position in output array

    - `numPoints`: Number of points to translate.

  - ### refreshContacts

    public void refreshContacts()
    Clears the addressbook cache. This is only necessary on iOS since its AddressBookRef is transactional.

  - ### getTransform

    public void getTransform(Object nativeGraphics, Transform t)

    Sets the given transform to the current transform in the given graphics object.

    ###### Parameters

    - `nativeGraphics`

    - `t`

  - ### isScrollWheeling

    public boolean isScrollWheeling()

  - ### pointerWheelMoved

    public void pointerWheelMoved(int x, int y, int scrollX, int scrollY)

    Maps a physical scroll-wheel / trackpad scroll into a Codename One scroll gesture. Ports call this from their native wheel callback instead of fabricating raw pointer (or key) events of their own, so the mapping lives in one place and behaves identically everywhere.

    The shared implementation replays the scroll as a synthetic press/drag/release over the component under `(x, y)` -- spread across a few EDT cycles so Codename One's own drag/tensile/deceleration logic animates it like a real drag rather than a single jump -- and temporarily makes that component non-focusable so the synthetic press is not registered as a click. While it runs `#isScrollWheeling` reports `true`.

    ###### Parameters

    - `x`: pointer x in display coordinates

    - `y`: pointer y in display coordinates

    - `scrollX`: horizontal scroll amount in pixels (already converted from the native notch count by the port); a positive value reveals content to the left, as if the finger were dragged right

    - `scrollY`: vertical scroll amount in pixels; a positive value reveals content above, as if the finger were dragged down

  - ### blockCopyPaste

    public void blockCopyPaste(boolean blockCopyPaste)

    Blocks or enables copy and paste in the entire app.

    ###### Parameters

    - `blockCopyPaste`: True to block copy and paste. False to enable it.

  - ### setDisableScreenshots

    public void setDisableScreenshots(boolean disable)

    Enables/disables screenshot blocking behavior where supported by the platform.

    ###### Parameters

    - `disable`: True to disable screenshots/screen capture where possible.

  - ### isDatabaseCustomPathSupported

    public boolean isDatabaseCustomPathSupported()

    Checks if this platform supports custom database paths. On platforms where this returns true, `#openOrCreateDB(java.lang.String)` will accept a file path (starting with "file://"

    ###### Returns

    True if platform supports custom paths.

  - ### requestFullScreen

    public boolean requestFullScreen()

    Attempt to enter full-screen mode. Should be overridden by the platform implementation.

    ###### Returns

    True if already in full-screen mode, or successfully entered full-screen mode.

  - ### exitFullScreen

    public boolean exitFullScreen()

    Exit full-screen mode.

    ###### Returns

    True if already not in full-screen mode or successfully exited full-screen mode.

  - ### isInFullScreenMode

    public boolean isInFullScreenMode()

    Checks to see if the app is currently running in full-screen mode.

    ###### Returns

    True if the app is currently running in full-screen mode.

  - ### isFullScreenSupported

    public boolean isFullScreenSupported()
    Checks if the platform supports full-screen mode. If this returns true then a call to `#requestFullScreen()` should enter full-screen mode.

  - ### initializeTextSelection

    public void initializeTextSelection(TextSelection aThis)

    Initializes text selection. This provides an opportunity for the native platform to register listeners on text selection to ensure that it works.

    Implementations that implement this method should also implement `#deinitializeTextSelection(com.codename1.ui.TextSelection)`

    ###### Parameters

    - `aThis`

    ###### Since

    7.0

    ###### See also

    - #deinitializeTextSelection(com.codename1.ui.TextSelection)

  - ### deinitializeTextSelection

    public void deinitializeTextSelection(TextSelection aThis)

    Deinitializes text selection.

    ###### Parameters

    - `aThis`

    ###### Since

    7.0

    ###### See also

    - #initializeTextSelection(com.codename1.ui.TextSelection)

  - ### createHeavyButton

    public Object createHeavyButton(Button aThis)

    Creates the native side of a `com.codename1.ui.HeavyButton`. A HeavyButton is a button that has a native button displayed over top of it. It is primarily used in the Javascript port where some functions can only be executed as a direct result of user interaction.

    ###### Parameters

    - `aThis`: The lightweight button for which a heavy peer is created

    ###### Returns

    Native peer. Format chosen by implementation.

    ###### Since

    7.0

    ###### See also

    - #addHeavyActionListener(java.lang.Object, com.codename1.ui.events.ActionListener)

  - ### addHeavyActionListener

    public void addHeavyActionListener(Object peer, ActionListener l)

    Adds an action listener which will be run in response to the native button's click event. `ActionListener#actionPerformed(com.codename1.ui.events.ActionEvent)` will be executed on the native UI thread, not the EDT.

    ###### Parameters

    - `peer`: The peer.

    - `l`: The action listener.

    ###### Since

    7.0

    ###### See also

    - #createHeavyButton(com.codename1.ui.Button)

    - #removeHeavyActionListener(java.lang.Object, com.codename1.ui.events.ActionListener)

  - ### removeHeavyActionListener

    public void removeHeavyActionListener(Object peer, ActionListener l)

    Removes a heavy action listener from a heavy button.

    ###### Parameters

    - `peer`: THe heavy button peer.

    - `l`: The action listener.

    ###### Since

    7.0

    ###### See also

    - #addHeavyActionListener(java.lang.Object, com.codename1.ui.events.ActionListener)

    - #createHeavyButton(com.codename1.ui.Button)

  - ### updateHeavyButtonBounds

    public void updateHeavyButtonBounds(Object peer, int x, int y, int width, int height)

    Updates the bounds of the native heavy button to match the bounds of the lightweight button.

    ###### Parameters

    - `peer`: The heavy peer.

    - `x`: The absolute X coordinate of the light peer.

    - `y`: The absolute Y coordinate of the light peer.

    - `width`: The width of the light peer.

    - `height`: The height of the light peer.

    ###### Since

    7.0

  - ### initHeavyButton

    public void initHeavyButton(Object peer)

    Initializes a heavy button. This is called whenever the light peer's initComponent() method is called. It should add the heavy button to the native UI hierarchy.

    ###### Parameters

    - `peer`: The heavy peer.

    ###### Since

    7.0

    ###### See also

    - #createHeavyButton(com.codename1.ui.Button)

  - ### deinitializeHeavyButton

    public void deinitializeHeavyButton(Object peer)

    Deinitializes a heavy button. This is called whenever the light peer's deinitialize() method is called. It should remove the heavy button from the native UI hierarchy.

    ###### Parameters

    - `peer`: The heavy peer.

    ###### Since

    7.0

    ###### See also

    - #initHeavyButton(java.lang.Object)

    - #createHeavyButton(com.codename1.ui.Button)

  - ### requiresHeavyButtonForCopyToClipboard

    public boolean requiresHeavyButtonForCopyToClipboard()

    Checks whether the current platform requires a heavy button for copy to clipboard functionality to work. This will be true on the Javascript port.

    ###### Since

    7.0

    ###### See also

    - #createHeavyButton(com.codename1.ui.Button)

  - ### copySelectionToClipboard

    public void copySelectionToClipboard(TextSelection sel)

    Copies the current text selection to the clipboard.

    ###### Parameters

    - `sel`: The current TextSelection instance for the current form.

    ###### Since

    7.0

  - ### setRenderingHints

    public void setRenderingHints(Object nativeGraphics, int hints)

    Sets the rendering hints for a graphics context.

    ###### Parameters

    - `nativeGraphics`: The native graphics context

    - `hints`: Hints

    ###### Since

    7.0

    ###### See also

    - Graphics#RENDERING_HINT_FAST

  - ### getRenderingHints

    public int getRenderingHints(Object nativeGraphics)

    Gets the rendering hints for this graphics context

    ###### Parameters

    - `nativeGraphics`: The native graphics context.

    ###### Returns

    The current rendering hints.

    ###### Since

    7.0

    ###### See also

    - Graphics#RENDERING_HINT_FAST

  - ### startRemoteControl

    public void startRemoteControl()

    Starts the remote control service. This should be implemented in the platform to handle binding the `RemoteControlListener` with the platform's remote control.

    This is executed when the user registers a new listener using `MediaManager#setRemoteControlListener(com.codename1.media.RemoteControlListener)`

    ###### Since

    7.0

  - ### stopRemoteControl

    public void stopRemoteControl()

    Stops the remote control service. This should be implemented in the platform to handle unbinding the `RemoteControlListener` with the platform's remote control.

    This is executed when a new listener is registered using `MediaManager#setRemoteControlListener(com.codename1.media.RemoteControlListener)`

    ###### Since

    7.0

  - ### setReadTimeout

    public void setReadTimeout(Object connection, int readTimeout)

    Sets the read timeout of a connection.

    ###### Parameters

    - `connection`

    - `readTimeout`

    ###### Since

    7.0

  - ### setInsecure

    public void setInsecure(Object connection, boolean insecure)

    Sets connection to be insecure. If platform supports it, this will turn off SSL cerficate checks for validity.

    ###### Parameters

    - `connection`

    - `insecure`: True to make connection insecure.

    ###### Since

    7.0

    ###### See also

    - ConnectionRequest#setInsecure(boolean)

    - ConnectionRequest#isInsecure()

  - ### isReadTimeoutSupported

    public boolean isReadTimeoutSupported()

    Checks if this platform supports read timeout in network connections.

    ###### Returns

    True if the platform supports read timeouts.

    ###### Since

    7.0

  - ### createNativeBrowserWindow

    public Object createNativeBrowserWindow(String startURL)

    Creates a native web browser window object. Default implementation returns null. Platform may override this to return its own browser window.

    ###### Parameters

    - `startURL`: The Start URL to open in the browser window.

    ###### Returns

    The browser window object, or null.

    ###### Since

    7.0

    ###### See also

    - com.codename1.ui.BrowserWindow

    - #addNativeBrowserWindowOnLoadListener(java.lang.Object, com.codename1.ui.events.ActionListener)

    - #removeNativeBrowserWindowOnLoadListener(java.lang.Object, com.codename1.ui.events.ActionListener)

    - #nativeBrowserWindowAddCloseListener(java.lang.Object, com.codename1.ui.events.ActionListener)

    - #nativeBrowserWindowRemoveCloseListener(java.lang.Object, com.codename1.ui.events.ActionListener)

    - #nativeBrowserWindowCleanup(java.lang.Object)

    - #nativeBrowserWindowHide(java.lang.Object)

    - #nativeBrowserWindowShow(java.lang.Object)

    - #nativeBrowserWindowSetTitle(java.lang.Object, java.lang.String)

    - #nativeBrowserWindowSetSize(java.lang.Object, int, int)

    - #nativeBrowserWindowEval(java.lang.Object, com.codename1.ui.BrowserWindow.EvalRequest)

  - ### addNativeBrowserWindowOnLoadListener

    public void addNativeBrowserWindowOnLoadListener(Object window, ActionListener l)

    Adds a load listener to a native browser window.

    ###### Parameters

    - `window`: The window to add the listener to.

    - `l`: The listener

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### removeNativeBrowserWindowOnLoadListener

    public void removeNativeBrowserWindowOnLoadListener(Object window, ActionListener l)

    Removes a load listener from a native browser window.

    ###### Parameters

    - `window`: The window from which to remove the listener.

    - `l`: The listener

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowSetSize

    public void nativeBrowserWindowSetSize(Object window, int width, int height)

    Sets the size of a native browser window.

    ###### Parameters

    - `window`: The window

    - `width`: The width in pixels.

    - `height`: The height in pixels.

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowSetTitle

    public void nativeBrowserWindowSetTitle(Object window, String title)

    Sets the window title of a native browser window.

    ###### Parameters

    - `window`: The window

    - `title`: The title

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowShow

    public void nativeBrowserWindowShow(Object window)

    Shows a native browser window.

    ###### Parameters

    - `window`: The window

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowHide

    public void nativeBrowserWindowHide(Object window)

    Hides a native browser window.

    ###### Parameters

    - `window`: The window

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowCleanup

    public void nativeBrowserWindowCleanup(Object window)

    Cleans up and disposes of a native browser window.

    ###### Parameters

    - `window`: The window

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowEval

    public void nativeBrowserWindowEval(Object window, BrowserWindow.EvalRequest req)

    Evaluates javascript on native browser window.

    ###### Parameters

    - `window`: The window

    - `req`: The javascript eval request.

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowAddCloseListener

    public void nativeBrowserWindowAddCloseListener(Object window, ActionListener l)

    Adds close listener to native browser window.

    ###### Parameters

    - `window`: The window.

    - `l`: The listener

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### nativeBrowserWindowRemoveCloseListener

    public void nativeBrowserWindowRemoveCloseListener(Object window, ActionListener l)

    Removes close listener from native browser window.

    ###### Parameters

    - `window`: The window.

    - `l`: The listener

    ###### Since

    7.0

    ###### See also

    - #createNativeBrowserWindow(java.lang.String)

  - ### registerPush

    public void registerPush(Hashtable metaData, boolean noFallback)

    User register to receive push notification

    ###### Parameters

    - `noFallback`: @param noFallback some devices don't support an efficient push API and will resort to polling to provide push like functionality. If this flag is set to true no polling will occur and the error PushCallback.REGISTRATION_ERROR_SERVICE_NOT_AVAILABLE will be sent to the push interface.

  - ### deregisterPush

    public void deregisterPush()
    Stop receiving push notifications to this client application

  - ### createMediaRecorder

    public Media createMediaRecorder(String path, String mimeType) throws IOException

    Creates a Media recorder Object which will record from the device mic to a file in the given path.

    ###### Parameters

    - `path`: @param path a file path to where to store the recording, if the file does not exists it will be created.

    - `mimeType`: @param mimeType the output mime type that is supported see getAvailableRecordingMimeTypes()

    Throws:
      `IOException`

  - ### createMediaRecorder

    public Media createMediaRecorder(MediaRecorderBuilder builder) throws IOException

    Creates a Media recorder Object which will record from the device mic to a file in the given path.

    ###### Parameters

    - `builder`: @param builder THe media builder with settings for the recorder. getAvailableRecordingMimeTypes()

    ###### Since

    7.0

    Throws:
      `IOException`

  - ### sendRegisteredForPush

    protected final void sendRegisteredForPush(String id)

  - ### pushReceived

    protected final void pushReceived(String data)

  - ### setPollingFrequency

    public void setPollingFrequency(int freq)

    Sets the frequency for polling the server in case of polling based push notification

    ###### Parameters

    - `freq`: the frequency in milliseconds

    ###### Deprecated

    we no longer support push polling

  - ### getImageIO

    public ImageIO getImageIO()

    Returns the image IO instance that allows scaling image files.

    ###### Returns

    the image IO instance

  - ### createSimd

    public Simd createSimd()
    Creates the SIMD implementation for this platform. Ports may override this to provide accelerated SIMD behavior.

  - ### instanceofObjArray

    public boolean instanceofObjArray(Object o)
    Workaround for XMLVM bug

  - ### instanceofByteArray

    public boolean instanceofByteArray(Object o)
    Workaround for XMLVM bug

  - ### instanceofShortArray

    public boolean instanceofShortArray(Object o)
    Workaround for XMLVM bug

  - ### instanceofLongArray

    public boolean instanceofLongArray(Object o)
    Workaround for XMLVM bug

  - ### instanceofIntArray

    public boolean instanceofIntArray(Object o)
    Workaround for XMLVM bug

  - ### instanceofFloatArray

    public boolean instanceofFloatArray(Object o)
    Workaround for XMLVM bug

  - ### instanceofDoubleArray

    public boolean instanceofDoubleArray(Object o)
    Workaround for XMLVM bug

  - ### getAvailableRecordingMimeTypes

    public String[] getAvailableRecordingMimeTypes()
    Gets the available recording MimeTypes

  - ### openOrCreateDB

    public Database openOrCreateDB(String databaseName) throws IOException

    Opens a database or create one if not exists

    ###### Parameters

    - `databaseName`: the name of the database

    ###### Returns

    Database Object or null if not supported on the platform

    ###### Throws

    - `IOException`: if database cannot be created
    Throws:
      `IOException`

  - ### deleteDB

    public void deleteDB(String databaseName) throws IOException

    Deletes database

    ###### Parameters

    - `databaseName`: the name of the database

    ###### Throws

    - `IOException`: if database cannot be deleted
    Throws:
      `IOException`

  - ### existsDB

    public boolean existsDB(String databaseName)

    Indicates weather a database exists

    ###### Parameters

    - `databaseName`: the name of the database

    ###### Returns

    true if database exists

  - ### getDatabasePath

    public String getDatabasePath(String databaseName)

    Returns the file path of the Database if exists and if supported on the platform.

    ###### Returns

    the file path of the database or null if not exists

  - ### isNativeTitle

    public boolean isNativeTitle()

    Indicates if the title of the Form is native title(in android ICS devices if the command behavior is native the ActionBar is used to display the title and the menu)

    ###### Returns

    true if platform would like to show the Form title

  - ### refreshNativeTitle

    public void refreshNativeTitle()
    if the title is native(e.g the android action bar), notify the native title that is needs to be refreshed

  - ### getCommandBehavior

    public int getCommandBehavior()

    Indicates the way commands should be added to a form as one of the ocmmand constants defined in this class

    ###### Returns

    the commandBehavior

  - ### setCommandBehavior

    public void setCommandBehavior(int commandBehavior)

    Indicates the way commands should be added to a form as one of the ocmmand constants defined in this class

    ###### Parameters

    - `commandBehavior`: the commandBehavior to set

  - ### notifyStatusBar

    public Object notifyStatusBar(String tickerText, String contentTitle, String contentBody, boolean vibrate, boolean flashLights, Hashtable args)

    Place a notification on the device status bar (if device has this functionality). The notification will re-start the Application.

    ###### Parameters

    - `tickerText`: the ticker text of the Notification

    - `contentTitle`: the title of the Notification

    - `contentBody`: the content of the Notification

    - `vibrate`: enable/disable notification alert

    - `flashLights`: enable/disable notification flashing

    - `args`: additional arguments to the notification

    ###### Returns

    a platform native object that allows modifying notification state

    ###### Deprecated

    use scheduleLocalNotification instead

  - ### isNotificationSupported

    public boolean isNotificationSupported()

    Indicates whether the notify status bar method will present a notification to the user

    ###### Returns

    true if the notify status bar method will present a notification to the user

  - ### dismissNotification

    public void dismissNotification(Object o)

    Removes the notification previously posted with the notify status bar method

    ###### Parameters

    - `o`: the object returned from the notifyStatusBar method

  - ### isBadgingSupported

    public boolean isBadgingSupported()

    Returns true if the underlying OS supports numeric badges on icons. Notice this is only available on iOS and only when push notification is enabled

    ###### Returns

    true if the underlying OS supports numeric badges

  - ### setBadgeNumber

    public void setBadgeNumber(int number)

    Sets the number that appears on the application icon in iOS

    ###### Parameters

    - `number`: number to show on the icon

  - ### isOpenNativeNavigationAppSupported

    public boolean isOpenNativeNavigationAppSupported()

    Returns true if the underlying OS supports opening the native navigation application

    ###### Returns

    true if the underlying OS supports launch of native navigation app

  - ### openNativeNavigationApp

    public void openNativeNavigationApp(double latitude, double longitude)

    Opens the native navigation app in the given coordinate.

    ###### Parameters

    - `latitude`

    - `longitude`

  - ### openNativeNavigationApp

    public void openNativeNavigationApp(String location)

    Opens the native navigation app with the given search location

    ###### Parameters

    - `location`: the location to search for in the native navigation map

  - ### getUdid

    public String getUdid()

    Returns the UDID for devices that support it

    ###### Returns

    the UDID or null

  - ### getMsisdn

    public String getMsisdn()

    Returns the MSISDN for devices that expose it

    ###### Returns

    the msisdn or null

  - ### getInAppPurchase

    public Purchase getInAppPurchase()

    Returns the native OS purchase implementation if applicable, if not this method will fallback to a cross platform purchase manager.

    ###### Returns

    instance of the purchase class

  - ### getCodeScanner

    public CodeScanner getCodeScanner()

    Returns the native implementation of the code scanner or null

    ###### Returns

    code scanner instance

    ###### Deprecated

    Use cn1-codescan cn1lib instead.

  - ### toNativePath

    public String toNativePath(String path)

    Converts a FileSystemStorage path to a native path.

    ###### Parameters

    - `path`: The file system storage path.

    ###### Returns

    The native path.

  - ### getAppHomePath

    public String getAppHomePath()

    This will return the application home directory.

    ###### Returns

    a writable directory that represent the application home directory

  - ### hasCachesDir

    public boolean hasCachesDir()

    Returns true if the device has a directory dedicated for "cache" files

    ###### Returns

    true if a caches style directory exists in this device type

  - ### getCachesDir

    public String getCachesDir()

    Returns a device specific directory designed for cache style files, or null if `#hasCachesDir()` is false

    ###### Returns

    file URL or null

  - ### isUseNativeCookieStore

    public boolean isUseNativeCookieStore()

    Uses the native cookie store if applicable, this might break simulator compatibility

    ###### Returns

    the useNativeCookieStore

  - ### setUseNativeCookieStore

    public void setUseNativeCookieStore(boolean useNativeCookieStore)

    Uses the native cookie store if applicable, this might break simulator compatibility

    ###### Parameters

    - `useNativeCookieStore`: the useNativeCookieStore to set

  - ### shouldPaintBackground

    public boolean shouldPaintBackground()

    Indicates the implementation is capable of keeping the background painted by being non-destructive.

    ###### Returns

    whether to paint the background

  - ### getNativeTransition

    public Transition getNativeTransition(Transition t)

    This method allows a native implementation to implement a native version of a given transition that can be faster

    ###### Parameters

    - `t`: the transition that is about to execute

    ###### Returns

    the given transition or a native version of that transition

  - ### isScreenLockSupported

    public boolean isScreenLockSupported()
    Checks if the device supports locking the screen display from dimming, allowing the developer to keep the screen display on.

  - ### lockScreen

    public void lockScreen()
    If Locking isScreenLockSupported() returns true calling this method will lock the screen display on

  - ### unlockScreen

    public void unlockScreen()
    Unlock the screen display allowing the screen to dim.

  - ### hasCamera

    public boolean hasCamera()
    Returns true if the device has camera false otherwise.

  - ### getEDTThreadPriority

    public int getEDTThreadPriority()
    Returns the platform EDT thread priority

  - ### drawingEncodedImage

    public void drawingEncodedImage(EncodedImage img)

    This method is used by the JavaSE implementation for performance logging

    ###### Parameters

    - `img`: the image being drawn

  - ### isNativePickerTypeSupported

    public boolean isNativePickerTypeSupported(int pickerType)

    Indicates whether the native picker dialog is supported for the given type which can include one of PICKER_TYPE_DATE_AND_TIME, PICKER_TYPE_TIME, PICKER_TYPE_DATE

    ###### Parameters

    - `pickerType`: the picker type constant

    ###### Returns

    true if the native platform supports this picker type

  - ### showNativePicker

    public Object showNativePicker(int type, Component source, Object currentValue, Object data)

    Shows a native modal dialog allowing us to perform the picking for the given type which can include one of PICKER_TYPE_DATE_AND_TIME, PICKER_TYPE_TIME, PICKER_TYPE_DATE

    ###### Parameters

    - `type`: the picker type constant

    - `source`: @param source the source component (optional) the native dialog will be placed in relation to this component if applicable

    - `currentValue`: the currently selected value

    - `data`: additional meta data specific to the picker type when applicable

    ###### Returns

    the value from the picker or null if the operation was canceled.

  - ### connectSocket

    public Object connectSocket(String host, int port)

    Creates a socket to connect to the given host on the given port

    ###### Parameters

    - `host`: the host

    - `port`: the port

    ###### Returns

    the socket object to use

  - ### connectSocket

    public Object connectSocket(String host, int port, int connectTimeout)

    Creates a socket to connect to the given host on the given port

    ###### Parameters

    - `host`: the host

    - `port`: the port

    - `connectTimeout`: connect timeout. 0 for infinite timeout.

    ###### Returns

    the socket object to use

    ###### Since

    7.0

  - ### listenSocket

    public Object listenSocket(int port)

    Listens on the given port similar to the accept method of server socket in Java. This method will only work if isServerSocketAvailable() is true.

    ###### Parameters

    - `port`: the port to listen on

    ###### Returns

    server socket instance

  - ### getHostOrIP

    public String getHostOrIP()

    Returns the device host or ip address if available

    ###### Returns

    device host or ip

  - ### disconnectSocket

    public void disconnectSocket(Object socket)

    Disconnects the current socket from the server/client on the other side

    ###### Parameters

    - `socket`: the socket instance

  - ### isSocketConnected

    public boolean isSocketConnected(Object socket)

    Indicates whether the socket is currently connected

    ###### Parameters

    - `socket`: is the socket we are connected to

    ###### Returns

    true if the socket is connected

  - ### isServerSocketAvailable

    public boolean isServerSocketAvailable()

    Indicates whether the underlying implementation supports server sockets

    ###### Returns

    false by default

  - ### isSocketAvailable

    public boolean isSocketAvailable()

    Indicates whether the underlying implementation supports sockets

    ###### Returns

    false by default

  - ### getSocketErrorMessage

    public String getSocketErrorMessage(Object socket)

    Return the pending error message on the given socket

    ###### Parameters

    - `socket`: the socket instance

    ###### Returns

    the error message if available

  - ### getSocketErrorCode

    public int getSocketErrorCode(Object socket)

    Returns the pending error code on the given socket

    ###### Parameters

    - `socket`: the socket instance

    ###### Returns

    the error code

  - ### getSocketAvailableInput

    public int getSocketAvailableInput(Object socket)

    Returns whether data is available for input on the socket

    ###### Parameters

    - `socket`: the socket instance

    ###### Returns

    a none zero value if data is available for input

  - ### readFromSocketStream

    public byte[] readFromSocketStream(Object socket)

    Read pending bytes from the socket

    ###### Parameters

    - `socket`: the socket object

    ###### Returns

    byte array with data read from the socket

  - ### writeToSocketStream

    public void writeToSocketStream(Object socket, byte[] data)

    Write the following byte array to the socket

    ###### Parameters

    - `socket`: the socket instance

    - `data`: the data written

  - ### isWebSocketSupported

    public boolean isWebSocketSupported()
    Indicates whether the underlying implementation supports the `WebSocket` API. Ports that do not implement WebSocket return false; the public `WebSocket.isSupported()` calls through here.

  - ### createWebSocketImpl

    public WebSocketImpl createWebSocketImpl(String url)
    Create a platform-specific `WebSocketImpl` bound to the given URL. The returned impl is not yet connected; the public `WebSocket` facade wires its event sink and calls `connect(int)`.
    Throws:
      `RuntimeException` - if the port does not support WebSocket.

  - ### writeToSocketStream

    public void writeToSocketStream(Object socket, byte[] data, int offset, int len)

    Write a range of the given byte array to the socket. The default implementation copies the requested range into a fresh array and delegates to `writeToSocketStream(Object, byte[])`; platform ports that can write a sub-range natively should override this to avoid the intermediate allocation.

    ###### Parameters

    - `socket`: the socket instance

    - `data`: the buffer containing the data to write

    - `offset`: the offset within the buffer at which to start writing

    - `len`: the number of bytes to write

  - ### installTar

    public void installTar() throws IOException
    Installs a tar file from the build server into the file system storage so it can be used with respect for hierarchy
    Throws:
      `IOException`

  - ### splitString

    public void splitString(String source, char separator, ArrayList<String> out)

  - ### isSimulator

    public boolean isSimulator()

    Allows detecting development mode so debugging code and special cases can be used to simplify flow

    ###### Returns

    true if we are running in the simulator, false otherwise

  - ### paintComponentBackground

    public void paintComponentBackground(Object nativeGraphics, int x, int y, int width, int height, Style s)

    Paints the background of a component based on the style values on the given graphics context, the style could be accessed from the drawing thread in read only capacity to make the code slightly more efficient

    ###### Parameters

    - `nativeGraphics`: the graphics context

    - `x`: coordinate to draw

    - `y`: coordinate to draw

    - `width`: coordinate to draw

    - `height`: coordinate to draw

    - `s`: the style object to draw

  - ### fillRect

    public void fillRect(Object nativeGraphics, int x, int y, int w, int h, byte alpha)

    Fills a rectangle with an optionally translucent fill color

    ###### Parameters

    - `nativeGraphics`: the underlying native graphics object

    - `x`: the x coordinate of the rectangle to be filled

    - `y`: the y coordinate of the rectangle to be filled

    - `w`: the width of the rectangle to be filled

    - `h`: the height of the rectangle to be filled

    - `alpha`: the alpha values specify semitransparency

  - ### drawLabelComponent

    public void drawLabelComponent(Object nativeGraphics, int cmpX, int cmpY, int cmpHeight, int cmpWidth, Style style, String text, Object icon, Object stateIcon, int preserveSpaceForState, int gap, boolean rtl, boolean isOppositeSide, int textPosition, int stringWidth, boolean isTickerRunning, int tickerShiftText, boolean endsWith3Points, int valign)
    Draws a label on the given graphics context, this method allows optimizing the very common drawing operation using platform native code

  - ### drawLabelText

    protected int drawLabelText(Object nativeGraphics, int textDecoration, boolean rtl, boolean isTickerRunning, boolean endsWith3Points, Object nativeFont, int txtW, int textSpaceW, int shiftText, String text, int x, int y, int fontHeight)

    Draws the text of a label

    ###### Parameters

    - `nativeGraphics`: graphics context

    - `textDecoration`: decoration information for the text

    - `text`: the text for the label

    - `x`: position for the label

    - `y`: position for the label

    - `txtW`: @param txtW stringWidth(text) equivalent which is faster than just invoking string width all the time

    - `textSpaceW`: the width available for the component

    ###### Returns

    the space used by the drawing

  - ### drawString

    public void drawString(Object nativeGraphics, Object nativeFont, String str, int x, int y, int textDecoration)

    Draw a string using the current font and color in the x,y coordinates. The font is drawn from the top position and not the baseline.

    ###### Parameters

    - `nativeGraphics`: the graphics context

    - `nativeFont`: the font used

    - `str`: the string to be drawn.

    - `x`: the x coordinate.

    - `y`: the y coordinate.

    - `textDecoration`: @param textDecoration Text decoration bitmask (See Style's TEXT_DECORATION_* constants)

  - ### setPlatformHint

    public void setPlatformHint(String key, String value)

    Makes it easier to pass hints to the underlying implementation for quicker hacks/pipelines

    ###### Parameters

    - `key`: the key

    - `value`: the value

  - ### scheduleLocalNotification

    public void scheduleLocalNotification(LocalNotification notif, long firstTime, int repeat)

  - ### cancelLocalNotification

    public void cancelLocalNotification(String notificationId)

  - ### requestNotificationPermission

    public void requestNotificationPermission(NotificationPermissionRequest request, NotificationPermissionCallback callback)
    Requests permission to post notifications. The default implementation assumes the platform has no permission model and immediately reports the permission as granted.

  - ### registerNotificationChannel

    public void registerNotificationChannel(NotificationChannelBuilder builder)
    Registers a notification channel. No-op on platforms without channels.

  - ### deleteNotificationChannel

    public void deleteNotificationChannel(String channelId)
    Deletes a notification channel. No-op on platforms without channels.

  - ### createNotificationChannelGroup

    public void createNotificationChannelGroup(String groupId, String groupName)
    Creates a notification channel group. No-op on platforms without channels.

  - ### isReceiveSharedContentSupported

    public boolean isReceiveSharedContentSupported()
    Returns true if the platform can receive shared content from other apps.

  - ### isWalletExtensionSupported

    public boolean isWalletExtensionSupported()
    Returns true if the platform supports publishing data to a Wallet issuer-provisioning extension (iOS only). Defaults to false.

  - ### walletExtensionClearPassEntries

    public void walletExtensionClearPassEntries(boolean remote)

    Removes all published Wallet extension pass entries from one of the two lists. No-op on platforms without Wallet extension support.

    ###### Parameters

    - `remote`: true for the Apple Watch list, false for the iPhone list

  - ### walletExtensionAddPassEntry

    public void walletExtensionAddPassEntry(boolean remote, String identifier, String title, String cardholderName, String accountSuffix, String network, String description, byte[] artPng)
    Appends one pass entry to the published Wallet extension list. No-op on platforms without Wallet extension support.

  - ### walletExtensionSetRequiresAuthentication

    public void walletExtensionSetRequiresAuthentication(boolean requiresAuthentication)
    Sets the Wallet extension requires-authentication flag. No-op on platforms without Wallet extension support.

  - ### walletExtensionSetAuthToken

    public void walletExtensionSetAuthToken(String token)
    Publishes the Wallet extension auth token, or removes it when null. No-op on platforms without Wallet extension support.

  - ### walletExtensionClear

    public void walletExtensionClear()
    Clears all published Wallet extension data. No-op on platforms without Wallet extension support.

  - ### fireSharedContentReceived

    public void fireSharedContentReceived(SharedContent content)
    Delivers shared content to the running application instance. onReceivedSharedContent is defined on com.codename1.system.Lifecycle, so apps that handle shared content extend Lifecycle; non-Lifecycle apps cannot override it and are skipped. The dispatch is performed on the EDT.

  - ### isBackgroundWorkSupported

    public boolean isBackgroundWorkSupported()
    Returns true if the platform supports constraint-aware background work.

  - ### scheduleBackgroundWork

    public void scheduleBackgroundWork(WorkRequest request)
    Schedules constraint-aware background work. No-op when unsupported.

  - ### cancelBackgroundWork

    public void cancelBackgroundWork(String workId)
    Cancels previously scheduled background work. No-op when unsupported.

  - ### isForegroundServiceSupported

    public boolean isForegroundServiceSupported()
    Returns true if the platform supports foreground services.

  - ### startForegroundService

    public Object startForegroundService(String channelId, String title, String body, String iconName, ForegroundService.Task task, ForegroundService handle)
    Starts a foreground service. The default implementation runs the task on a thread without a system notification and returns null.

  - ### updateForegroundServiceNotification

    public void updateForegroundServiceNotification(Object nativeHandle, String title, String body)
    Updates the notification of a running foreground service. No-op by default.

  - ### stopForegroundService

    public void stopForegroundService(Object nativeHandle)
    Stops a running foreground service. No-op by default.

  - ### isBackgroundProcessingSupported

    public boolean isBackgroundProcessingSupported()
    Returns true if the platform supports deferrable background processing tasks.

  - ### scheduleBackgroundProcessing

    public void scheduleBackgroundProcessing(String id, long earliestBeginEpochMs, boolean requiresNetwork, boolean requiresPower, Runnable task)
    Schedules a deferrable background processing task. No-op when unsupported.

  - ### cancelBackgroundProcessing

    public void cancelBackgroundProcessing(String id)
    Cancels a scheduled background processing task. No-op when unsupported.

  - ### subscribeToPushTopic

    public void subscribeToPushTopic(String topic)
    Subscribes the device to a push topic. No-op when unsupported.

  - ### unsubscribeFromPushTopic

    public void unsubscribeFromPushTopic(String topic)
    Unsubscribes the device from a push topic. No-op when unsupported.

  - ### getPreferredBackgroundFetchInterval

    public int getPreferredBackgroundFetchInterval()

    Gets the preferred time (in seconds) between background fetches.

    ###### Returns

    The time interval in seconds.

    ###### See also

    - #isBackgroundFetchSupported()

    - #setPreferredBackgroundFetchInterval(int)

    - com.codename1.background.BackgroundFetch

    - com.codename1.ui.Display.setPreferredBackgroundFetchInterval(int)

  - ### setPreferredBackgroundFetchInterval

    public void setPreferredBackgroundFetchInterval(int seconds)

    Sets the preferred time interval between background fetches. This is only a preferred interval and is not guaranteed. Some platforms, like iOS, maintain sovereign control over when and if background fetches will be allowed. This number is used only as a guideline.

    This method must be called in order to activate background fetch.>

    Note: If the platform doesn't support background fetch (i.e. `#isBackgroundFetchSupported()` returns `false`, then this method does nothing.

    ###### Parameters

    - `seconds`: The time interval in seconds.

    ###### See also

    - #isBackgroundFetchSupported()

    - #getPreferredBackgroundFetchInterval()

    - com.codename1.background.BackgroundFetch

    - com.codename1.ui.Display.setPreferredBackgroundFetchInterval(int)

  - ### isBackgroundFetchSupported

    public boolean isBackgroundFetchSupported()

    Checks to see if the current platform supports background fetch.

    ###### Returns

    True if the current platform supports background fetch.

    ###### See also

    - #setPreferredBackgroundFetchInterval(int)

    - #getPreferredBackgroundFetchInterval()

    - com.codename1.background.BackgroundFetch

    - com.codename1.ui.Display.setPreferredBackgroundFetchInterval(int)

  - ### gaussianBlurImage

    public Image gaussianBlurImage(Image image, float radius)

  - ### isGaussianBlurSupported

    public boolean isGaussianBlurSupported()

  - ### isJailbrokenDevice

    public boolean isJailbrokenDevice()

    Returns true if this device is jailbroken or rooted, false if not or unknown. Notice that this method isn't accurate and can't detect all jailbreak/rooting cases

    ###### Returns

    true if this device is jailbroken or rooted, false if not or unknown.

  - ### getProjectBuildHints

    public Map<String,String> getProjectBuildHints()

    Returns the build hints for the simulator, this will only work in the debug environment and it's designed to allow extensions/API's to verify user settings/build hints exist

    ###### Returns

    map of the build hints that isn't modified without the codename1.arg. prefix

  - ### setProjectBuildHint

    public void setProjectBuildHint(String key, String value)

    Sets a build hint into the settings while overwriting any previous value. This will only work in the debug environment and it's designed to allow extensions/API's to verify user settings/build hints exist. Important: this will throw an exception outside of the simulator!

    ###### Parameters

    - `key`: the build hint without the codename1.arg. prefix

    - `value`: the value for the hint

  - ### canInstallOnHomescreen

    public boolean canInstallOnHomescreen()

    Checks to see if you can prompt the user to install the app on their homescreen. This is only relevant for the Javascript port with PWAs. This is not a "static" property, as it only returns true if the app is in a state that allows you to prompt the user. E.g. if you have previously prompted the user and they have declined, then this will return false.

    Best practice is to use `#onCanInstallOnHomescreen(java.lang.Runnable)` to be notified when you are allowed to prompt the user for installation. Then call `#promptInstallOnHomescreen()` inside that method - or sometime after.

    Example

        `onCanInstallOnHomescreen(()->{
             if (canInstallOnHomescreen()) {
                  if (promptInstallOnHomescreen()) {
                      // User accepted installation` else {
                      // user rejected installation
                  }
             }
        });
        }

    https://developers.google.com/web/fundamentals/app-install-banners/

    ###### Returns

    True if you are able to prompt the user to install the app on their homescreen.

    ###### See also

    - #promptInstallOnHomescreen()

    - #onCanInstallOnHomescreen(java.lang.Runnable)

  - ### promptInstallOnHomescreen

    public boolean promptInstallOnHomescreen()

    Prompts the user to install this app on their homescreen. This is only relevant in the javascript port.

    ###### Returns

    Returns:

      The result of the user prompt. true if the user accepts the installation, false if they reject it.

      ###### See also

      - #canInstallOnHomescreen()

      - #onCanInstallOnHomescreen(java.lang.Runnable)

  - ### onCanInstallOnHomescreen

    public void onCanInstallOnHomescreen(Runnable r)

    A callback fired when you are allowed to prompt the user to install the app on their homescreen. Only relevant in the javascript port.

    ###### Parameters

    - `r`: @param r Runnable that will be run when/if you are permitted to prompt the user to install the app on their homescreen.

  - ### supportsNativeTextAreaVerticalAlignment

    public boolean supportsNativeTextAreaVerticalAlignment()
    Checks whether the platform's native text areas support vertical alignment.

  - ### postMessage

    public void postMessage(MessageEvent message)

    Posts a message to the native platform.

    ###### Parameters

    - `message`: The message.

    ###### Since

    7.0

  - ### isDarkMode

    public Boolean isDarkMode()

    Returns true if the platform is in dark mode, null is returned for unknown status

    ###### Returns

    true in case of dark mode

  - ### announceForAccessibility

    public void announceForAccessibility(Component cmp, String text)

    Manually announces text to native accessibility services, associating the announcement with a specific component when possible. Components are typically announced automatically when focused; this hook allows platforms to expose announcements triggered outside the normal focus lifecycle. The default implementation is a no-op.

    ###### Parameters

    - `cmp`: the component related to this announcement or `null` for the root context

    - `text`: the message to announce

  - ### isLargerTextEnabled

    public boolean isLargerTextEnabled()

    Returns true if the user has selected larger type fonts in the system settings. Default implementation returns false.

    ###### Returns

    true when the platform indicates a larger text preference.

    ###### Since

    7.1

  - ### getLargerTextScale

    public float getLargerTextScale()

    Returns a scale factor representing how much larger system fonts should be. A value of `1.0` indicates the default system font size.

    ###### Returns

    scale factor for larger system fonts.

    ###### Since

    7.1

  - ### getStackTrace

    public String getStackTrace(Thread parentThread, Throwable t)

    Returns the stack trace from the exception on the given thread. This API isn't supported on all platforms and may return a blank string when unavailable.

    ###### Parameters

    - `parentThread`: the thread in which the exception was thrown

    - `t`: the exception

    ###### Returns

    a stack trace string that might be blank

  - ### secureRandomBytes

    public void secureRandomBytes(byte[] out)
    Fills `out` with cryptographically secure random bytes. Override in the port to route to the platform's native CSPRNG.

  - ### aesEncrypt

    public byte[] aesEncrypt(String transformation, byte[] key, byte[] iv, byte[] aad, byte[] plaintext)
    Encrypts with AES. Modes / paddings supported: AES/CBC/PKCS5Padding, AES/CBC/NoPadding, AES/GCM/NoPadding (recommended -- authenticated; the auth tag is appended to the ciphertext per the JCE convention) and AES/ECB/PKCS5Padding (legacy interop only). `iv` may be null for ECB. `aad` is associated data for GCM (may be null).

  - ### aesDecrypt

    public byte[] aesDecrypt(String transformation, byte[] key, byte[] iv, byte[] aad, byte[] ciphertext)
    Decrypts with AES. Same parameters as `aesEncrypt`.

  - ### rsaEncrypt

    public byte[] rsaEncrypt(String transformation, byte[] publicKeyX509, byte[] plaintext)
    Encrypts with RSA using an X.509 (SubjectPublicKeyInfo) DER-encoded public key. `transformation` is typically "RSA/ECB/OAEPWithSHA-256AndMGF1Padding" or "RSA/ECB/PKCS1Padding".

  - ### rsaDecrypt

    public byte[] rsaDecrypt(String transformation, byte[] privateKeyPkcs8, byte[] ciphertext)
    Decrypts with RSA using a PKCS#8 DER-encoded private key.

  - ### cryptoSign

    public byte[] cryptoSign(String algorithm, String keyAlgorithm, byte[] privateKeyPkcs8, byte[] data)
    Computes a signature. `algorithm` is e.g. "SHA256withRSA", "SHA256withECDSA". `keyAlgorithm` is "RSA" or "EC".

  - ### cryptoVerify

    public boolean cryptoVerify(String algorithm, String keyAlgorithm, byte[] publicKeyX509, byte[] data, byte[] signature)
    Verifies a signature with an X.509 public key.

  - ### generateRsaKeyPair

    public byte[][] generateRsaKeyPair(int bits)
    Generates a fresh RSA key pair of the given size in bits. Returns `{publicKeyX509, privateKeyPkcs8}`.

  - ### generateSymmetricKey

    public byte[] generateSymmetricKey(int bytes)
    Generates `bytes` of fresh symmetric key material. The default just delegates to [#secureRandomBytes(byte[])] (no structure is required for AES keys).