| /* | |
| * Copyright (c) 1995, 2025, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| package java.awt; | |
| import java.awt.datatransfer.Clipboard; | |
| import java.awt.dnd.DragGestureListener; | |
| import java.awt.dnd.DragGestureRecognizer; | |
| import java.awt.dnd.DragSource; | |
| import java.awt.event.AWTEventListener; | |
| import java.awt.event.AWTEventListenerProxy; | |
| import java.awt.event.ActionEvent; | |
| import java.awt.event.AdjustmentEvent; | |
| import java.awt.event.ComponentEvent; | |
| import java.awt.event.ContainerEvent; | |
| import java.awt.event.FocusEvent; | |
| import java.awt.event.HierarchyEvent; | |
| import java.awt.event.InputEvent; | |
| import java.awt.event.InputMethodEvent; | |
| import java.awt.event.InvocationEvent; | |
| import java.awt.event.ItemEvent; | |
| import java.awt.event.KeyEvent; | |
| import java.awt.event.MouseEvent; | |
| import java.awt.event.PaintEvent; | |
| import java.awt.event.TextEvent; | |
| import java.awt.event.WindowEvent; | |
| import java.awt.im.InputMethodHighlight; | |
| import java.awt.image.ColorModel; | |
| import java.awt.image.ImageObserver; | |
| import java.awt.image.ImageProducer; | |
| import java.beans.PropertyChangeEvent; | |
| import java.beans.PropertyChangeListener; | |
| import java.beans.PropertyChangeSupport; | |
| import java.io.File; | |
| import java.io.FileInputStream; | |
| import java.net.URL; | |
| import java.util.ArrayList; | |
| import java.util.Arrays; | |
| import java.util.EventListener; | |
| import java.util.HashMap; | |
| import java.util.Map; | |
| import java.util.MissingResourceException; | |
| import java.util.Properties; | |
| import java.util.ResourceBundle; | |
| import java.util.ServiceLoader; | |
| import java.util.Set; | |
| import java.util.WeakHashMap; | |
| import java.util.stream.Collectors; | |
| import javax.accessibility.AccessibilityProvider; | |
| import sun.awt.AWTAccessor; | |
| import sun.awt.AppContext; | |
| import sun.awt.HeadlessToolkit; | |
| import sun.awt.PeerEvent; | |
| import sun.awt.PlatformGraphicsInfo; | |
| import sun.awt.SunToolkit; | |
| /** | |
| * This class is the abstract superclass of all actual | |
| * implementations of the Abstract Window Toolkit. Subclasses of | |
| * the {@code Toolkit} class are used to bind the various components | |
| * to particular native toolkit implementations. | |
| * <p> | |
| * Many GUI events may be delivered to user | |
| * asynchronously, if the opposite is not specified explicitly. | |
| * As well as | |
| * many GUI operations may be performed asynchronously. | |
| * This fact means that if the state of a component is set, and then | |
| * the state immediately queried, the returned value may not yet | |
| * reflect the requested change. This behavior includes, but is not | |
| * limited to: | |
| * <ul> | |
| * <li>Scrolling to a specified position. | |
| * <br>For example, calling {@code ScrollPane.setScrollPosition} | |
| * and then {@code getScrollPosition} may return an incorrect | |
| * value if the original request has not yet been processed. | |
| * | |
| * <li>Moving the focus from one component to another. | |
| * <br>For more information, see | |
| * <a href="https://docs.oracle.com/javase/tutorial/uiswing/misc/focus.html#transferTiming">Timing | |
| * Focus Transfers</a>, a section in | |
| * <a href="https://docs.oracle.com/javase/tutorial/uiswing/">The Swing | |
| * Tutorial</a>. | |
| * | |
| * <li>Making a top-level container visible. | |
| * <br>Calling {@code setVisible(true)} on a {@code Window}, | |
| * {@code Frame} or {@code Dialog} may occur | |
| * asynchronously. | |
| * | |
| * <li>Setting the size or location of a top-level container. | |
| * <br>Calls to {@code setSize}, {@code setBounds} or | |
| * {@code setLocation} on a {@code Window}, | |
| * {@code Frame} or {@code Dialog} are forwarded | |
| * to the underlying window management system and may be | |
| * ignored or modified. See {@link java.awt.Window} for | |
| * more information. | |
| * </ul> | |
| * <p> | |
| * Most applications should not call any of the methods in this | |
| * class directly. The methods defined by {@code Toolkit} are | |
| * the "glue" that joins the platform-independent classes in the | |
| * {@code java.awt} package with their counterparts in | |
| * {@code java.awt.peer}. Some methods defined by | |
| * {@code Toolkit} query the native operating system directly. | |
| * | |
| * @author Sami Shaio | |
| * @author Arthur van Hoff | |
| * @author Fred Ecks | |
| * @since 1.0 | |
| */ | |
| public abstract class Toolkit { | |
| /** | |
| * Constructs a {@code Toolkit}. | |
| */ | |
| protected Toolkit() {} | |
| // The following method is called by the private method | |
| // <code>updateSystemColors</code> in <code>SystemColor</code>. | |
| /** | |
| * Fills in the integer array that is supplied as an argument | |
| * with the current system color values. | |
| * | |
| * @param systemColors an integer array. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.1 | |
| */ | |
| protected void loadSystemColors(int[] systemColors) | |
| throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| } | |
| /** | |
| * Controls whether the layout of Containers is validated dynamically | |
| * during resizing, or statically, after resizing is complete. | |
| * Use {@code isDynamicLayoutActive()} to detect if this feature enabled | |
| * in this program and is supported by this operating system | |
| * and/or window manager. | |
| * Note that this feature is supported not on all platforms, and | |
| * conversely, that this feature cannot be turned off on some platforms. | |
| * On these platforms where dynamic layout during resizing is not supported | |
| * (or is always supported), setting this property has no effect. | |
| * Note that this feature can be set or unset as a property of the | |
| * operating system or window manager on some platforms. On such | |
| * platforms, the dynamic resize property must be set at the operating | |
| * system or window manager level before this method can take effect. | |
| * This method does not change support or settings of the underlying | |
| * operating system or | |
| * window manager. The OS/WM support can be | |
| * queried using getDesktopProperty("awt.dynamicLayoutSupported") method. | |
| * | |
| * @param dynamic If true, Containers should re-layout their | |
| * components as the Container is being resized. If false, | |
| * the layout will be validated after resizing is completed. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see #isDynamicLayoutSet() | |
| * @see #isDynamicLayoutActive() | |
| * @see #getDesktopProperty(String propertyName) | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.4 | |
| */ | |
| public void setDynamicLayout(final boolean dynamic) | |
| throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (this != getDefaultToolkit()) { | |
| getDefaultToolkit().setDynamicLayout(dynamic); | |
| } | |
| } | |
| /** | |
| * Returns whether the layout of Containers is validated dynamically | |
| * during resizing, or statically, after resizing is complete. | |
| * Note: this method returns the value that was set programmatically; | |
| * it does not reflect support at the level of the operating system | |
| * or window manager for dynamic layout on resizing, or the current | |
| * operating system or window manager settings. The OS/WM support can | |
| * be queried using getDesktopProperty("awt.dynamicLayoutSupported"). | |
| * | |
| * @return true if validation of Containers is done dynamically, | |
| * false if validation is done after resizing is finished. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see #setDynamicLayout(boolean dynamic) | |
| * @see #isDynamicLayoutActive() | |
| * @see #getDesktopProperty(String propertyName) | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.4 | |
| */ | |
| protected boolean isDynamicLayoutSet() | |
| throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit().isDynamicLayoutSet(); | |
| } else { | |
| return false; | |
| } | |
| } | |
| /** | |
| * Returns whether dynamic layout of Containers on resize is currently | |
| * enabled on the underlying operating system and/or window manager. If the | |
| * platform supports it, {@code setDynamicLayout(boolean)} may be used to | |
| * programmatically enable or disable platform dynamic layout. Regardless of | |
| * whether that toggling is supported, or whether {@code true} or {@code | |
| * false} is specified as an argument, or has never been called at all, this | |
| * method will return the active current platform behavior and which will be | |
| * followed by the JDK in determining layout policy during resizing. | |
| * <p> | |
| * If dynamic layout is currently inactive then Containers re-layout their | |
| * components when resizing is completed. As a result the | |
| * {@code Component.validate()} method will be invoked only once per resize. | |
| * If dynamic layout is currently active then Containers re-layout their | |
| * components on every native resize event and the {@code validate()} method | |
| * will be invoked each time. The OS/WM support can be queried using the | |
| * getDesktopProperty("awt.dynamicLayoutSupported") method. This property | |
| * will reflect the platform capability but is not sufficient to tell if it | |
| * is presently enabled. | |
| * | |
| * @return true if dynamic layout of Containers on resize is currently | |
| * active, false otherwise. | |
| * @throws HeadlessException if the GraphicsEnvironment.isHeadless() method | |
| * returns true | |
| * @see #setDynamicLayout(boolean dynamic) | |
| * @see #isDynamicLayoutSet() | |
| * @see #getDesktopProperty(String propertyName) | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.4 | |
| */ | |
| public boolean isDynamicLayoutActive() | |
| throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit().isDynamicLayoutActive(); | |
| } else { | |
| return false; | |
| } | |
| } | |
| /** | |
| * Gets the size of the screen. On systems with multiple displays, the | |
| * primary display is used. Multi-screen aware display dimensions are | |
| * available from {@code GraphicsConfiguration} and | |
| * {@code GraphicsDevice}. | |
| * @return the size of this toolkit's screen, in pixels. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsConfiguration#getBounds | |
| * @see java.awt.GraphicsDevice#getDisplayMode | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| */ | |
| public abstract Dimension getScreenSize() | |
| throws HeadlessException; | |
| /** | |
| * Returns the screen resolution in dots-per-inch. | |
| * @return this toolkit's screen resolution, in dots-per-inch. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| */ | |
| public abstract int getScreenResolution() | |
| throws HeadlessException; | |
| /** | |
| * Gets the insets of the screen. | |
| * @param gc a {@code GraphicsConfiguration} | |
| * @return the insets of this toolkit's screen, in pixels. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.4 | |
| */ | |
| public Insets getScreenInsets(GraphicsConfiguration gc) | |
| throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit().getScreenInsets(gc); | |
| } else { | |
| return new Insets(0, 0, 0, 0); | |
| } | |
| } | |
| /** | |
| * Determines the color model of this toolkit's screen. | |
| * <p> | |
| * {@code ColorModel} is an abstract class that | |
| * encapsulates the ability to translate between the | |
| * pixel values of an image and its red, green, blue, | |
| * and alpha components. | |
| * <p> | |
| * This toolkit method is called by the | |
| * {@code getColorModel} method | |
| * of the {@code Component} class. | |
| * @return the color model of this toolkit's screen. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @see java.awt.image.ColorModel | |
| * @see java.awt.Component#getColorModel | |
| */ | |
| public abstract ColorModel getColorModel() | |
| throws HeadlessException; | |
| /** | |
| * Returns the names of the available fonts in this toolkit.<p> | |
| * For 1.1, the following font names are deprecated (the replacement | |
| * name follows): | |
| * <ul> | |
| * <li>TimesRoman (use Serif) | |
| * <li>Helvetica (use SansSerif) | |
| * <li>Courier (use Monospaced) | |
| * </ul><p> | |
| * The ZapfDingbats fontname is also deprecated in 1.1 but the characters | |
| * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports | |
| * those characters. | |
| * @return the names of the available fonts in this toolkit. | |
| * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()} | |
| * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames() | |
| */ | |
| @Deprecated | |
| public abstract String[] getFontList(); | |
| /** | |
| * Gets the screen device metrics for rendering of the font. | |
| * @param font a font | |
| * @return the screen metrics of the specified font in this toolkit | |
| * @deprecated As of JDK version 1.2, replaced by the {@code Font} | |
| * method {@code getLineMetrics}. | |
| * @see java.awt.font.LineMetrics | |
| * @see java.awt.Font#getLineMetrics | |
| * @see java.awt.GraphicsEnvironment#getScreenDevices | |
| */ | |
| @Deprecated | |
| public abstract FontMetrics getFontMetrics(Font font); | |
| /** | |
| * Synchronizes this toolkit's graphics state. Some window systems | |
| * may do buffering of graphics events. | |
| * <p> | |
| * This method ensures that the display is up-to-date. It is useful | |
| * for animation. | |
| */ | |
| public abstract void sync(); | |
| /** | |
| * The default toolkit. | |
| */ | |
| private static Toolkit toolkit; | |
| /** | |
| * Used internally by the assistive technologies functions; set at | |
| * init time and used at load time | |
| */ | |
| private static String atNames; | |
| /** | |
| * Initializes properties related to assistive technologies. | |
| * These properties are used both in the loadAssistiveProperties() | |
| * function below, as well as other classes in the jdk that depend | |
| * on the properties (such as the use of the screen_magnifier_present | |
| * property in Java2D hardware acceleration initialization). The | |
| * initialization of the properties must be done before the platform- | |
| * specific Toolkit class is instantiated so that all necessary | |
| * properties are set up properly before any classes dependent upon them | |
| * are initialized. | |
| */ | |
| private static void initAssistiveTechnologies() { | |
| // Get accessibility properties | |
| final String sep = File.separator; | |
| final Properties properties = new Properties(); | |
| // Try loading the per-user accessibility properties file. | |
| try { | |
| File propsFile = new File( | |
| System.getProperty("user.home") + | |
| sep + ".accessibility.properties"); | |
| try (FileInputStream in = new FileInputStream(propsFile)) { | |
| // Inputstream has been buffered in Properties class | |
| properties.load(in); | |
| } | |
| } catch (Exception e) { | |
| // Per-user accessibility properties file does not exist | |
| } | |
| // Try loading the system-wide accessibility properties | |
| // file only if a per-user accessibility properties | |
| // file does not exist or is empty. | |
| if (properties.size() == 0) { | |
| try { | |
| File propsFile = new File( | |
| System.getProperty("java.home") + sep + "conf" + | |
| sep + "accessibility.properties"); | |
| try (FileInputStream in = new FileInputStream(propsFile)) { | |
| // Inputstream has been buffered in Properties class | |
| properties.load(in); | |
| } | |
| } catch (Exception e) { | |
| // System-wide accessibility properties file does | |
| // not exist; | |
| } | |
| } | |
| // Get whether a screen magnifier is present. First check | |
| // the system property and then check the properties file. | |
| String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present"); | |
| if (magPresent == null) { | |
| magPresent = properties.getProperty("screen_magnifier_present", null); | |
| if (magPresent != null) { | |
| System.setProperty("javax.accessibility.screen_magnifier_present", magPresent); | |
| } | |
| } | |
| // Get the names of any assistive technologies to load. First | |
| // check the system property and then check the properties | |
| // file. | |
| String classNames = System.getProperty("javax.accessibility.assistive_technologies"); | |
| if (classNames == null) { | |
| classNames = properties.getProperty("assistive_technologies", null); | |
| if (classNames != null) { | |
| System.setProperty("javax.accessibility.assistive_technologies", classNames); | |
| } | |
| } | |
| atNames = classNames; | |
| } | |
| /** | |
| * Rethrow the AWTError but include the cause. | |
| * | |
| * @param s the error message | |
| * @param e the original exception | |
| * @throws AWTError the new AWTError including the cause (the original exception) | |
| */ | |
| private static void newAWTError(Throwable e, String s) { | |
| AWTError newAWTError = new AWTError(s); | |
| newAWTError.initCause(e); | |
| throw newAWTError; | |
| } | |
| /** | |
| * When a service provider for Assistive Technology is not found look for a | |
| * supporting class on the class path and instantiate it. | |
| * | |
| * @param atName the name of the class to be loaded | |
| */ | |
| private static void fallbackToLoadClassForAT(String atName) { | |
| try { | |
| Class<?> c = Class.forName(atName, false, ClassLoader.getSystemClassLoader()); | |
| c.getConstructor().newInstance(); | |
| } catch (ClassNotFoundException e) { | |
| newAWTError(e, "Assistive Technology not found: " + atName); | |
| } catch (InstantiationException e) { | |
| newAWTError(e, "Could not instantiate Assistive Technology: " + atName); | |
| } catch (IllegalAccessException e) { | |
| newAWTError(e, "Could not access Assistive Technology: " + atName); | |
| } catch (Exception e) { | |
| newAWTError(e, "Error trying to install Assistive Technology: " + atName); | |
| } | |
| } | |
| /** | |
| * Loads accessibility support using the property assistive_technologies. | |
| * The form is assistive_technologies= followed by a comma-separated list of | |
| * assistive technology providers to load. The order in which providers are | |
| * loaded is determined by the order in which the ServiceLoader discovers | |
| * implementations of the AccessibilityProvider interface, not by the order | |
| * of provider names in the property list. When a provider is found its | |
| * accessibility implementation will be started by calling the provider's | |
| * activate method. If the list of assistive technology providers is the | |
| * empty string or contains only | |
| * {@linkplain Character#isWhitespace(int) white space} characters or | |
| * {@code null} it is ignored. All other errors are handled via an AWTError | |
| * exception. | |
| */ | |
| private static void loadAssistiveTechnologies() { | |
| // Load any assistive technologies | |
| if (atNames != null && !atNames.isBlank()) { | |
| ClassLoader cl = ClassLoader.getSystemClassLoader(); | |
| Set<String> names = Arrays.stream(atNames.split(",")) | |
| .map(String::trim) | |
| .collect(Collectors.toSet()); | |
| final Map<String, AccessibilityProvider> providers = new HashMap<>(); | |
| try { | |
| for (AccessibilityProvider p : ServiceLoader.load(AccessibilityProvider.class, cl)) { | |
| String name = p.getName(); | |
| if (names.contains(name) && !providers.containsKey(name)) { | |
| p.activate(); | |
| providers.put(name, p); | |
| } | |
| } | |
| } catch (java.util.ServiceConfigurationError | Exception e) { | |
| newAWTError(e, "Could not load or activate service provider"); | |
| } | |
| names.stream() | |
| .filter(n -> !providers.containsKey(n)) | |
| .forEach(Toolkit::fallbackToLoadClassForAT); | |
| } | |
| } | |
| /** | |
| * Gets the default toolkit. | |
| * <p> | |
| * If a system property named {@code "java.awt.headless"} is set | |
| * to {@code true} then the headless implementation | |
| * of {@code Toolkit} is used, | |
| * otherwise the default platform-specific implementation of | |
| * {@code Toolkit} is used. | |
| * <p> | |
| * If this Toolkit is not a headless implementation and if they exist, service | |
| * providers of {@link javax.accessibility.AccessibilityProvider} will be loaded | |
| * if specified by the system property | |
| * {@code javax.accessibility.assistive_technologies}. | |
| * <p> | |
| * An example of setting this property is to invoke Java with | |
| * {@code -Djavax.accessibility.assistive_technologies=MyServiceProvider}. | |
| * In addition to MyServiceProvider other service providers can be specified | |
| * using a comma separated list. Service providers are loaded after the AWT | |
| * toolkit is created. | |
| * <p> | |
| * If the list of assistive technology providers as provided through system | |
| * property "{@systemProperty javax.accessibility.assistive_technologies}" | |
| * is the empty string or contains only | |
| * {@linkplain Character#isWhitespace(int) white space} characters it is | |
| * ignored. All other errors are handled via an AWTError exception. | |
| * <p> | |
| * The names specified in the assistive_technologies property are used to query | |
| * each service provider implementation. If the requested name matches the | |
| * {@linkplain AccessibilityProvider#getName name} of the service provider, the | |
| * {@link AccessibilityProvider#activate} method will be invoked to activate the | |
| * matching service provider. | |
| * | |
| * @implSpec | |
| * If assistive technology service providers are not specified with a system | |
| * property this implementation will look in a properties file located as follows: | |
| * <ul> | |
| * <li> {@code ${user.home}/.accessibility.properties} | |
| * <li> {@code ${java.home}/conf/accessibility.properties} | |
| * </ul> | |
| * Only the first of these files to be located will be consulted. The requested | |
| * service providers are specified by setting the {@code assistive_technologies=} | |
| * property. A single provider or a comma separated list of providers can be | |
| * specified. | |
| * | |
| * @return the default toolkit. | |
| * @throws AWTError in case of an error loading assistive technologies. | |
| * @see java.util.ServiceLoader | |
| * @see javax.accessibility.AccessibilityProvider | |
| */ | |
| public static synchronized Toolkit getDefaultToolkit() { | |
| if (toolkit == null) { | |
| toolkit = PlatformGraphicsInfo.createToolkit(); | |
| if (GraphicsEnvironment.isHeadless() && | |
| !(toolkit instanceof HeadlessToolkit)) { | |
| toolkit = new HeadlessToolkit(toolkit); | |
| } | |
| if (!GraphicsEnvironment.isHeadless()) { | |
| loadAssistiveTechnologies(); | |
| } | |
| } | |
| return toolkit; | |
| } | |
| /** | |
| * Returns an image which gets pixel data from the specified file, | |
| * whose format can be either GIF, JPEG or PNG. | |
| * The underlying toolkit attempts to resolve multiple requests | |
| * with the same filename to the same returned Image. | |
| * <p> | |
| * Since the mechanism required to facilitate this sharing of | |
| * {@code Image} objects may continue to hold onto images | |
| * that are no longer in use for an indefinite period of time, | |
| * developers are encouraged to implement their own caching of | |
| * images by using the {@link #createImage(java.lang.String) createImage} | |
| * variant wherever available. | |
| * If the image data contained in the specified file changes, | |
| * the {@code Image} object returned from this method may | |
| * still contain stale information which was loaded from the | |
| * file after a prior call. | |
| * Previously loaded image data can be manually discarded by | |
| * calling the {@link Image#flush flush} method on the | |
| * returned {@code Image}. | |
| * @param filename the name of a file containing pixel data | |
| * in a recognized file format. | |
| * @return an image which gets its pixel data from | |
| * the specified file. | |
| * @see #createImage(java.lang.String) | |
| */ | |
| public abstract Image getImage(String filename); | |
| /** | |
| * Returns an image which gets pixel data from the specified URL. | |
| * The pixel data referenced by the specified URL must be in one | |
| * of the following formats: GIF, JPEG or PNG. | |
| * The underlying toolkit attempts to resolve multiple requests | |
| * with the same URL to the same returned Image. | |
| * <p> | |
| * Since the mechanism required to facilitate this sharing of | |
| * {@code Image} objects may continue to hold onto images | |
| * that are no longer in use for an indefinite period of time, | |
| * developers are encouraged to implement their own caching of | |
| * images by using the {@link #createImage(java.net.URL) createImage} | |
| * variant wherever available. | |
| * If the image data stored at the specified URL changes, | |
| * the {@code Image} object returned from this method may | |
| * still contain stale information which was fetched from the | |
| * URL after a prior call. | |
| * Previously loaded image data can be manually discarded by | |
| * calling the {@link Image#flush flush} method on the | |
| * returned {@code Image}. | |
| * @param url the URL to use in fetching the pixel data. | |
| * @return an image which gets its pixel data from | |
| * the specified URL. | |
| * @see #createImage(java.net.URL) | |
| */ | |
| public abstract Image getImage(URL url); | |
| /** | |
| * Returns an image which gets pixel data from the specified file. | |
| * The returned Image is a new object which will not be shared | |
| * with any other caller of this method or its getImage variant. | |
| * @param filename the name of a file containing pixel data | |
| * in a recognized file format. | |
| * @return an image which gets its pixel data from | |
| * the specified file. | |
| * @see #getImage(java.lang.String) | |
| */ | |
| public abstract Image createImage(String filename); | |
| /** | |
| * Returns an image which gets pixel data from the specified URL. | |
| * The returned Image is a new object which will not be shared | |
| * with any other caller of this method or its getImage variant. | |
| * @param url the URL to use in fetching the pixel data. | |
| * @return an image which gets its pixel data from | |
| * the specified URL. | |
| * @see #getImage(java.net.URL) | |
| */ | |
| public abstract Image createImage(URL url); | |
| /** | |
| * Prepares an image for rendering. | |
| * <p> | |
| * If the values of the width and height arguments are both | |
| * {@code -1}, this method prepares the image for rendering | |
| * on the default screen; otherwise, this method prepares an image | |
| * for rendering on the default screen at the specified width and height. | |
| * <p> | |
| * The image data is downloaded asynchronously in another thread, | |
| * and an appropriately scaled screen representation of the image is | |
| * generated. | |
| * <p> | |
| * This method is called by components {@code prepareImage} | |
| * methods. | |
| * <p> | |
| * Information on the flags returned by this method can be found | |
| * with the definition of the {@code ImageObserver} interface. | |
| * @param image the image for which to prepare a | |
| * screen representation. | |
| * @param width the width of the desired screen | |
| * representation, or {@code -1}. | |
| * @param height the height of the desired screen | |
| * representation, or {@code -1}. | |
| * @param observer the {@code ImageObserver} | |
| * object to be notified as the | |
| * image is being prepared. | |
| * @return {@code true} if the image has already been | |
| * fully prepared; {@code false} otherwise. | |
| * @see java.awt.Component#prepareImage(java.awt.Image, | |
| * java.awt.image.ImageObserver) | |
| * @see java.awt.Component#prepareImage(java.awt.Image, | |
| * int, int, java.awt.image.ImageObserver) | |
| * @see java.awt.image.ImageObserver | |
| */ | |
| public abstract boolean prepareImage(Image image, int width, int height, | |
| ImageObserver observer); | |
| /** | |
| * Indicates the construction status of a specified image that is | |
| * being prepared for display. | |
| * <p> | |
| * If the values of the width and height arguments are both | |
| * {@code -1}, this method returns the construction status of | |
| * a screen representation of the specified image in this toolkit. | |
| * Otherwise, this method returns the construction status of a | |
| * scaled representation of the image at the specified width | |
| * and height. | |
| * <p> | |
| * This method does not cause the image to begin loading. | |
| * An application must call {@code prepareImage} to force | |
| * the loading of an image. | |
| * <p> | |
| * This method is called by the component's {@code checkImage} | |
| * methods. | |
| * <p> | |
| * Information on the flags returned by this method can be found | |
| * with the definition of the {@code ImageObserver} interface. | |
| * @param image the image whose status is being checked. | |
| * @param width the width of the scaled version whose status is | |
| * being checked, or {@code -1}. | |
| * @param height the height of the scaled version whose status | |
| * is being checked, or {@code -1}. | |
| * @param observer the {@code ImageObserver} object to be | |
| * notified as the image is being prepared. | |
| * @return the bitwise inclusive <strong>OR</strong> of the | |
| * {@code ImageObserver} flags for the | |
| * image data that is currently available. | |
| * @see java.awt.Toolkit#prepareImage(java.awt.Image, | |
| * int, int, java.awt.image.ImageObserver) | |
| * @see java.awt.Component#checkImage(java.awt.Image, | |
| * java.awt.image.ImageObserver) | |
| * @see java.awt.Component#checkImage(java.awt.Image, | |
| * int, int, java.awt.image.ImageObserver) | |
| * @see java.awt.image.ImageObserver | |
| */ | |
| public abstract int checkImage(Image image, int width, int height, | |
| ImageObserver observer); | |
| /** | |
| * Creates an image with the specified image producer. | |
| * @param producer the image producer to be used. | |
| * @return an image with the specified image producer. | |
| * @see java.awt.Image | |
| * @see java.awt.image.ImageProducer | |
| * @see java.awt.Component#createImage(java.awt.image.ImageProducer) | |
| */ | |
| public abstract Image createImage(ImageProducer producer); | |
| /** | |
| * Creates an image which decodes the image stored in the specified | |
| * byte array. | |
| * <p> | |
| * The data must be in some image format, such as GIF or JPEG, | |
| * that is supported by this toolkit. | |
| * @param imagedata an array of bytes, representing | |
| * image data in a supported image format. | |
| * @return an image. | |
| * @since 1.1 | |
| */ | |
| public Image createImage(byte[] imagedata) { | |
| return createImage(imagedata, 0, imagedata.length); | |
| } | |
| /** | |
| * Creates an image which decodes the image stored in the specified | |
| * byte array, and at the specified offset and length. | |
| * The data must be in some image format, such as GIF or JPEG, | |
| * that is supported by this toolkit. | |
| * @param imagedata an array of bytes, representing | |
| * image data in a supported image format. | |
| * @param imageoffset the offset of the beginning | |
| * of the data in the array. | |
| * @param imagelength the length of the data in the array. | |
| * @return an image. | |
| * @since 1.1 | |
| */ | |
| public abstract Image createImage(byte[] imagedata, | |
| int imageoffset, | |
| int imagelength); | |
| /** | |
| * Gets a {@code PrintJob} object which is the result of initiating | |
| * a print operation on the toolkit's platform. | |
| * | |
| * @param frame the parent of the print dialog. May not be null. | |
| * @param jobtitle the title of the PrintJob. A null title is equivalent | |
| * to "". | |
| * @param props a Properties object containing zero or more properties. | |
| * Properties are not standardized and are not consistent across | |
| * implementations. Because of this, PrintJobs which require job | |
| * and page control should use the version of this function which | |
| * takes JobAttributes and PageAttributes objects. This object | |
| * may be updated to reflect the user's job choices on exit. May | |
| * be null. | |
| * @return a {@code PrintJob} object, or {@code null} if the | |
| * user cancelled the print job. | |
| * @throws NullPointerException if frame is null | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @see java.awt.PrintJob | |
| * @since 1.1 | |
| */ | |
| public abstract PrintJob getPrintJob(Frame frame, String jobtitle, | |
| Properties props); | |
| /** | |
| * Gets a {@code PrintJob} object which is the result of initiating | |
| * a print operation on the toolkit's platform. | |
| * | |
| * @param frame the parent of the print dialog. May not be null. | |
| * @param jobtitle the title of the PrintJob. A null title is equivalent | |
| * to "". | |
| * @param jobAttributes a set of job attributes which will control the | |
| * PrintJob. The attributes will be updated to reflect the user's | |
| * choices as outlined in the JobAttributes documentation. May be | |
| * null. | |
| * @param pageAttributes a set of page attributes which will control the | |
| * PrintJob. The attributes will be applied to every page in the | |
| * job. The attributes will be updated to reflect the user's | |
| * choices as outlined in the PageAttributes documentation. May be | |
| * null. | |
| * @return a {@code PrintJob} object, or {@code null} if the | |
| * user cancelled the print job. | |
| * @throws NullPointerException if frame is null | |
| * @throws IllegalArgumentException if pageAttributes specifies differing | |
| * cross feed and feed resolutions. Also if this thread has | |
| * access to the file system and jobAttributes specifies | |
| * print to file, and the specified destination file exists but | |
| * is a directory rather than a regular file, does not exist but | |
| * cannot be created, or cannot be opened for any other reason. | |
| * However in the case of print to file, if a dialog is also | |
| * requested to be displayed then the user will be given an | |
| * opportunity to select a file and proceed with printing. | |
| * The dialog will ensure that the selected output file | |
| * is valid before returning from this method. | |
| * @see java.awt.PrintJob | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @see java.awt.JobAttributes | |
| * @see java.awt.PageAttributes | |
| * @since 1.3 | |
| */ | |
| public PrintJob getPrintJob(Frame frame, String jobtitle, | |
| JobAttributes jobAttributes, | |
| PageAttributes pageAttributes) { | |
| // Override to add printing support with new job/page control classes | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle, | |
| jobAttributes, | |
| pageAttributes); | |
| } else { | |
| return getPrintJob(frame, jobtitle, null); | |
| } | |
| } | |
| /** | |
| * Emits an audio beep depending on native system settings and hardware | |
| * capabilities. | |
| * @since 1.1 | |
| */ | |
| public abstract void beep(); | |
| /** | |
| * Gets the singleton instance of the system Clipboard which interfaces | |
| * with clipboard facilities provided by the native platform. This | |
| * clipboard enables data transfer between Java programs and native | |
| * applications which use native clipboard facilities. | |
| * <p> | |
| * In addition to any and all default formats text returned by the system | |
| * Clipboard's {@code getTransferData()} method is available in the | |
| * following flavors: | |
| * <ul> | |
| * <li>DataFlavor.stringFlavor</li> | |
| * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li> | |
| * </ul> | |
| * As with {@code java.awt.datatransfer.StringSelection}, if the | |
| * requested flavor is {@code DataFlavor.plainTextFlavor}, or an | |
| * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of | |
| * the system Clipboard's {@code getTransferData()} method for | |
| * {@code DataFlavor.plainTextFlavor}, and equivalent DataFlavors, is | |
| * inconsistent with the definition of {@code DataFlavor.plainTextFlavor}. | |
| * Because of this, support for | |
| * {@code DataFlavor.plainTextFlavor}, and equivalent flavors, is | |
| * <b>deprecated</b>. | |
| * | |
| * @return the system Clipboard | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @see java.awt.datatransfer.Clipboard | |
| * @see java.awt.datatransfer.StringSelection | |
| * @see java.awt.datatransfer.DataFlavor#stringFlavor | |
| * @see java.awt.datatransfer.DataFlavor#plainTextFlavor | |
| * @see java.io.Reader | |
| * @since 1.1 | |
| */ | |
| public abstract Clipboard getSystemClipboard() | |
| throws HeadlessException; | |
| /** | |
| * Gets the singleton instance of the system selection as a | |
| * {@code Clipboard} object. This allows an application to read and | |
| * modify the current, system-wide selection. | |
| * <p> | |
| * An application is responsible for updating the system selection whenever | |
| * the user selects text, using either the mouse or the keyboard. | |
| * Typically, this is implemented by installing a | |
| * {@code FocusListener} on all {@code Component}s which support | |
| * text selection, and, between {@code FOCUS_GAINED} and | |
| * {@code FOCUS_LOST} events delivered to that {@code Component}, | |
| * updating the system selection {@code Clipboard} when the selection | |
| * changes inside the {@code Component}. Properly updating the system | |
| * selection ensures that a Java application will interact correctly with | |
| * native applications and other Java applications running simultaneously | |
| * on the system. Note that {@code java.awt.TextComponent} and | |
| * {@code javax.swing.text.JTextComponent} already adhere to this | |
| * policy. When using these classes, and their subclasses, developers need | |
| * not write any additional code. | |
| * <p> | |
| * Some platforms do not support a system selection {@code Clipboard}. | |
| * On those platforms, this method will return {@code null}. In such a | |
| * case, an application is absolved from its responsibility to update the | |
| * system selection {@code Clipboard} as described above. | |
| * | |
| * @return the system selection as a {@code Clipboard}, or | |
| * {@code null} if the native platform does not support a | |
| * system selection {@code Clipboard} | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * | |
| * @see java.awt.datatransfer.Clipboard | |
| * @see java.awt.event.FocusListener | |
| * @see java.awt.event.FocusEvent#FOCUS_GAINED | |
| * @see java.awt.event.FocusEvent#FOCUS_LOST | |
| * @see TextComponent | |
| * @see javax.swing.text.JTextComponent | |
| * @see GraphicsEnvironment#isHeadless | |
| * @since 1.4 | |
| */ | |
| public Clipboard getSystemSelection() throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit().getSystemSelection(); | |
| } else { | |
| GraphicsEnvironment.checkHeadless(); | |
| return null; | |
| } | |
| } | |
| /** | |
| * Determines which modifier key is the appropriate accelerator | |
| * key for menu shortcuts. | |
| * <p> | |
| * Menu shortcuts, which are embodied in the | |
| * {@code MenuShortcut} class, are handled by the | |
| * {@code MenuBar} class. | |
| * <p> | |
| * By default, this method returns {@code Event.CTRL_MASK}. | |
| * Toolkit implementations should override this method if the | |
| * <b>Control</b> key isn't the correct key for accelerators. | |
| * @return the modifier mask on the {@code Event} class | |
| * that is used for menu shortcuts on this toolkit. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @see java.awt.MenuBar | |
| * @see java.awt.MenuShortcut | |
| * @deprecated It is recommended that extended modifier keys and | |
| * {@link #getMenuShortcutKeyMaskEx()} be used instead | |
| * @since 1.1 | |
| */ | |
| @Deprecated(since = "10") | |
| public int getMenuShortcutKeyMask() throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| return Event.CTRL_MASK; | |
| } | |
| /** | |
| * Determines which extended modifier key is the appropriate accelerator | |
| * key for menu shortcuts. | |
| * <p> | |
| * Menu shortcuts, which are embodied in the {@code MenuShortcut} class, are | |
| * handled by the {@code MenuBar} class. | |
| * <p> | |
| * By default, this method returns {@code InputEvent.CTRL_DOWN_MASK}. | |
| * Toolkit implementations should override this method if the | |
| * <b>Control</b> key isn't the correct key for accelerators. | |
| * | |
| * @return the modifier mask on the {@code InputEvent} class that is used | |
| * for menu shortcuts on this toolkit | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() returns | |
| * true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @see java.awt.MenuBar | |
| * @see java.awt.MenuShortcut | |
| * @since 10 | |
| */ | |
| public int getMenuShortcutKeyMaskEx() throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| return InputEvent.CTRL_DOWN_MASK; | |
| } | |
| /** | |
| * Returns whether the given locking key on the keyboard is currently in | |
| * its "on" state. | |
| * Valid key codes are | |
| * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, | |
| * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, | |
| * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and | |
| * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. | |
| * | |
| * @param keyCode the key code | |
| * @return {@code true} if the given key is currently in its "on" state; | |
| * otherwise {@code false} | |
| * @throws java.lang.IllegalArgumentException if {@code keyCode} | |
| * is not one of the valid key codes | |
| * @throws java.lang.UnsupportedOperationException if the host system doesn't | |
| * allow getting the state of this key programmatically, or if the keyboard | |
| * doesn't have this key | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.3 | |
| */ | |
| public boolean getLockingKeyState(int keyCode) | |
| throws UnsupportedOperationException | |
| { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || | |
| keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { | |
| throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState"); | |
| } | |
| throw new UnsupportedOperationException("Toolkit.getLockingKeyState"); | |
| } | |
| /** | |
| * Sets the state of the given locking key on the keyboard. | |
| * Valid key codes are | |
| * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, | |
| * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, | |
| * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and | |
| * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. | |
| * <p> | |
| * Depending on the platform, setting the state of a locking key may | |
| * involve event processing and therefore may not be immediately | |
| * observable through getLockingKeyState. | |
| * | |
| * @param keyCode the key code | |
| * @param on the state of the key | |
| * @throws java.lang.IllegalArgumentException if {@code keyCode} | |
| * is not one of the valid key codes | |
| * @throws java.lang.UnsupportedOperationException if the host system doesn't | |
| * allow setting the state of this key programmatically, or if the keyboard | |
| * doesn't have this key | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.3 | |
| */ | |
| public void setLockingKeyState(int keyCode, boolean on) | |
| throws UnsupportedOperationException | |
| { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || | |
| keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { | |
| throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState"); | |
| } | |
| throw new UnsupportedOperationException("Toolkit.setLockingKeyState"); | |
| } | |
| /** | |
| * Give native peers the ability to query the native container | |
| * given a native component (eg the direct parent may be lightweight). | |
| * | |
| * @param c the component to fetch the container for | |
| * @return the native container object for the component | |
| */ | |
| protected static Container getNativeContainer(Component c) { | |
| return c.getNativeContainer(); | |
| } | |
| /** | |
| * Creates a new custom cursor object. | |
| * If the image to display is invalid, the cursor will be hidden (made | |
| * completely transparent), and the hotspot will be set to (0, 0). | |
| * | |
| * <p>Note that multi-frame images are invalid and may cause this | |
| * method to hang. | |
| * | |
| * @param cursor the image to display when the cursor is activated | |
| * @param hotSpot the X and Y of the large cursor's hot spot; the | |
| * hotSpot values must be less than the Dimension returned by | |
| * {@code getBestCursorSize} | |
| * @param name a localized description of the cursor, for Java Accessibility use | |
| * @throws IndexOutOfBoundsException if the hotSpot values are outside | |
| * the bounds of the cursor | |
| * @return the cursor created | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.2 | |
| */ | |
| public Cursor createCustomCursor(Image cursor, Point hotSpot, String name) | |
| throws IndexOutOfBoundsException, HeadlessException | |
| { | |
| // Override to implement custom cursor support. | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit(). | |
| createCustomCursor(cursor, hotSpot, name); | |
| } else { | |
| return new Cursor(Cursor.DEFAULT_CURSOR); | |
| } | |
| } | |
| /** | |
| * Returns the supported cursor dimension which is closest to the desired | |
| * sizes. Systems which only support a single cursor size will return that | |
| * size regardless of the desired sizes. Systems which don't support custom | |
| * cursors will return a dimension of 0, 0. <p> | |
| * Note: if an image is used whose dimensions don't match a supported size | |
| * (as returned by this method), the Toolkit implementation will attempt to | |
| * resize the image to a supported size. | |
| * Since converting low-resolution images is difficult, | |
| * no guarantees are made as to the quality of a cursor image which isn't a | |
| * supported size. It is therefore recommended that this method | |
| * be called and an appropriate image used so no image conversion is made. | |
| * | |
| * @param preferredWidth the preferred cursor width the component would like | |
| * to use. | |
| * @param preferredHeight the preferred cursor height the component would like | |
| * to use. | |
| * @return the closest matching supported cursor size, or a dimension of 0,0 if | |
| * the Toolkit implementation doesn't support custom cursors. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.2 | |
| */ | |
| public Dimension getBestCursorSize(int preferredWidth, | |
| int preferredHeight) throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| // Override to implement custom cursor support. | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit(). | |
| getBestCursorSize(preferredWidth, preferredHeight); | |
| } else { | |
| return new Dimension(0, 0); | |
| } | |
| } | |
| /** | |
| * Returns the maximum number of colors the Toolkit supports in a custom cursor | |
| * palette.<p> | |
| * Note: if an image is used which has more colors in its palette than | |
| * the supported maximum, the Toolkit implementation will attempt to flatten the | |
| * palette to the maximum. Since converting low-resolution images is difficult, | |
| * no guarantees are made as to the quality of a cursor image which has more | |
| * colors than the system supports. It is therefore recommended that this method | |
| * be called and an appropriate image used so no image conversion is made. | |
| * | |
| * @return the maximum number of colors, or zero if custom cursors are not | |
| * supported by this Toolkit implementation. | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() | |
| * returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.2 | |
| */ | |
| public int getMaximumCursorColors() throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| // Override to implement custom cursor support. | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit().getMaximumCursorColors(); | |
| } else { | |
| return 0; | |
| } | |
| } | |
| /** | |
| * Returns whether Toolkit supports this state for | |
| * {@code Frame}s. This method tells whether the <em>UI | |
| * concept</em> of, say, maximization or iconification is | |
| * supported. It will always return false for "compound" states | |
| * like {@code Frame.ICONIFIED|Frame.MAXIMIZED_VERT}. | |
| * In other words, the rule of thumb is that only queries with a | |
| * single frame state constant as an argument are meaningful. | |
| * <p>Note that supporting a given concept is a platform- | |
| * dependent feature. Due to native limitations the Toolkit | |
| * object may report a particular state as supported, however at | |
| * the same time the Toolkit object will be unable to apply the | |
| * state to a given frame. This circumstance has two following | |
| * consequences: | |
| * <ul> | |
| * <li>Only the return value of {@code false} for the present | |
| * method actually indicates that the given state is not | |
| * supported. If the method returns {@code true} the given state | |
| * may still be unsupported and/or unavailable for a particular | |
| * frame. | |
| * <li>The developer should consider examining the value of the | |
| * {@link java.awt.event.WindowEvent#getNewState} method of the | |
| * {@code WindowEvent} received through the {@link | |
| * java.awt.event.WindowStateListener}, rather than assuming | |
| * that the state given to the {@code setExtendedState()} method | |
| * will be definitely applied. For more information see the | |
| * documentation for the {@link Frame#setExtendedState} method. | |
| * </ul> | |
| * | |
| * @param state one of named frame state constants. | |
| * @return {@code true} is this frame state is supported by | |
| * this Toolkit implementation, {@code false} otherwise. | |
| * @throws HeadlessException | |
| * if {@code GraphicsEnvironment.isHeadless()} | |
| * returns {@code true}. | |
| * @see java.awt.Window#addWindowStateListener | |
| * @since 1.4 | |
| */ | |
| public boolean isFrameStateSupported(int state) | |
| throws HeadlessException | |
| { | |
| GraphicsEnvironment.checkHeadless(); | |
| if (this != Toolkit.getDefaultToolkit()) { | |
| return Toolkit.getDefaultToolkit(). | |
| isFrameStateSupported(state); | |
| } else { | |
| return (state == Frame.NORMAL); // others are not guaranteed | |
| } | |
| } | |
| /** | |
| * Support for I18N: any visible strings should be stored in | |
| * sun.awt.resources.awt.properties. The ResourceBundle is stored | |
| * here, so that only one copy is maintained. | |
| */ | |
| private static ResourceBundle resources; | |
| private static ResourceBundle platformResources; | |
| // called by platform toolkit | |
| private static void setPlatformResources(ResourceBundle bundle) { | |
| platformResources = bundle; | |
| } | |
| /** | |
| * Initialize JNI field and method ids | |
| */ | |
| private static native void initIDs(); | |
| /** | |
| * WARNING: This is a temporary workaround for a problem in the | |
| * way the AWT loads native libraries. A number of classes in the | |
| * AWT package have a native method, initIDs(), which initializes | |
| * the JNI field and method ids used in the native portion of | |
| * their implementation. | |
| * | |
| * Since the use and storage of these ids is done by the | |
| * implementation libraries, the implementation of these method is | |
| * provided by the particular AWT implementations (for example, | |
| * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The | |
| * problem is that this means that the native libraries must be | |
| * loaded by the java.* classes, which do not necessarily know the | |
| * names of the libraries to load. A better way of doing this | |
| * would be to provide a separate library which defines java.awt.* | |
| * initIDs, and exports the relevant symbols out to the | |
| * implementation libraries. | |
| * | |
| * For now, we know it's done by the implementation, and we assume | |
| * that the name of the library is "awt". -br. | |
| * | |
| * If you change loadLibraries(), please add the change to | |
| * java.awt.image.ColorModel.loadLibraries(). Unfortunately, | |
| * classes can be loaded in java.awt.image that depend on | |
| * libawt and there is no way to call Toolkit.loadLibraries() | |
| * directly. -hung | |
| */ | |
| private static boolean loaded = false; | |
| @SuppressWarnings("restricted") | |
| static void loadLibraries() { | |
| if (!loaded) { | |
| System.loadLibrary("awt"); | |
| loaded = true; | |
| } | |
| } | |
| static { | |
| initStatic(); | |
| } | |
| private static void initStatic() { | |
| AWTAccessor.setToolkitAccessor( | |
| new AWTAccessor.ToolkitAccessor() { | |
| @Override | |
| public void setPlatformResources(ResourceBundle bundle) { | |
| Toolkit.setPlatformResources(bundle); | |
| } | |
| }); | |
| try { | |
| resources = ResourceBundle.getBundle("sun.awt.resources.awt"); | |
| } catch (MissingResourceException e) { | |
| // No resource file; defaults will be used. | |
| } | |
| // ensure that the proper libraries are loaded | |
| loadLibraries(); | |
| initAssistiveTechnologies(); | |
| initIDs(); | |
| } | |
| /** | |
| * Gets a property with the specified key and default. | |
| * This method returns defaultValue if the property is not found. | |
| * | |
| * @param key the key | |
| * @param defaultValue the default value | |
| * @return the value of the property or the default value | |
| * if the property was not found | |
| */ | |
| public static String getProperty(String key, String defaultValue) { | |
| // first try platform specific bundle | |
| if (platformResources != null) { | |
| try { | |
| return platformResources.getString(key); | |
| } | |
| catch (MissingResourceException e) {} | |
| } | |
| // then shared one | |
| if (resources != null) { | |
| try { | |
| return resources.getString(key); | |
| } | |
| catch (MissingResourceException e) {} | |
| } | |
| return defaultValue; | |
| } | |
| /** | |
| * Get the application's or applet's EventQueue instance. | |
| * Depending on the Toolkit implementation, different EventQueues | |
| * may be returned for different applets. Applets should | |
| * therefore not assume that the EventQueue instance returned | |
| * by this method will be shared by other applets or the system. | |
| * | |
| * @return the {@code EventQueue} object | |
| */ | |
| public final EventQueue getSystemEventQueue() { | |
| return getSystemEventQueueImpl(); | |
| } | |
| /** | |
| * Gets the application's or applet's {@code EventQueue} | |
| * instance, without checking access. For security reasons, | |
| * this can only be called from a {@code Toolkit} subclass. | |
| * @return the {@code EventQueue} object | |
| */ | |
| protected abstract EventQueue getSystemEventQueueImpl(); | |
| /* Accessor method for use by AWT package routines. */ | |
| static EventQueue getEventQueue() { | |
| return getDefaultToolkit().getSystemEventQueueImpl(); | |
| } | |
| /** | |
| * Creates a concrete, platform dependent, subclass of the abstract | |
| * DragGestureRecognizer class requested, and associates it with the | |
| * DragSource, Component and DragGestureListener specified. | |
| * | |
| * subclasses should override this to provide their own implementation | |
| * | |
| * @param <T> the type of DragGestureRecognizer to create | |
| * @param abstractRecognizerClass The abstract class of the required recognizer | |
| * @param ds The DragSource | |
| * @param c The Component target for the DragGestureRecognizer | |
| * @param srcActions The actions permitted for the gesture | |
| * @param dgl The DragGestureListener | |
| * | |
| * @return the new object or null. Always returns null if | |
| * GraphicsEnvironment.isHeadless() returns true. | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| */ | |
| public <T extends DragGestureRecognizer> T | |
| createDragGestureRecognizer(Class<T> abstractRecognizerClass, | |
| DragSource ds, Component c, int srcActions, | |
| DragGestureListener dgl) | |
| { | |
| return null; | |
| } | |
| /** | |
| * Obtains a value for the specified desktop property. | |
| * | |
| * A desktop property is a uniquely named value for a resource that | |
| * is Toolkit global in nature. Usually it also is an abstract | |
| * representation for an underlying platform dependent desktop setting. | |
| * For more information on desktop properties supported by the AWT see | |
| * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>. | |
| * | |
| * @param propertyName the property name | |
| * @return the value for the specified desktop property | |
| */ | |
| public final synchronized Object getDesktopProperty(String propertyName) { | |
| // This is a workaround for headless toolkits. It would be | |
| // better to override this method but it is declared final. | |
| // "this instanceof" syntax defeats polymorphism. | |
| // --mm, 03/03/00 | |
| if (this instanceof HeadlessToolkit) { | |
| return ((HeadlessToolkit)this).getUnderlyingToolkit() | |
| .getDesktopProperty(propertyName); | |
| } | |
| if (desktopProperties.isEmpty()) { | |
| initializeDesktopProperties(); | |
| } | |
| Object value; | |
| // This property should never be cached | |
| if (propertyName.equals("awt.dynamicLayoutSupported")) { | |
| return getDefaultToolkit().lazilyLoadDesktopProperty(propertyName); | |
| } | |
| value = desktopProperties.get(propertyName); | |
| if (value == null) { | |
| value = lazilyLoadDesktopProperty(propertyName); | |
| if (value != null) { | |
| setDesktopProperty(propertyName, value); | |
| } | |
| } | |
| /* for property "awt.font.desktophints" */ | |
| if (value instanceof RenderingHints) { | |
| value = ((RenderingHints)value).clone(); | |
| } | |
| return value; | |
| } | |
| /** | |
| * Sets the named desktop property to the specified value and fires a | |
| * property change event to notify any listeners that the value has changed. | |
| * | |
| * @param name the property name | |
| * @param newValue the new property value | |
| */ | |
| protected final void setDesktopProperty(String name, Object newValue) { | |
| // This is a workaround for headless toolkits. It would be | |
| // better to override this method but it is declared final. | |
| // "this instanceof" syntax defeats polymorphism. | |
| // --mm, 03/03/00 | |
| if (this instanceof HeadlessToolkit) { | |
| ((HeadlessToolkit)this).getUnderlyingToolkit() | |
| .setDesktopProperty(name, newValue); | |
| return; | |
| } | |
| Object oldValue; | |
| synchronized (this) { | |
| oldValue = desktopProperties.put(name, newValue); | |
| } | |
| // Don't fire change event if old and new values are null. | |
| // It helps to avoid recursive resending of WM_THEMECHANGED | |
| if (oldValue != null || newValue != null) { | |
| desktopPropsSupport.firePropertyChange(name, oldValue, newValue); | |
| } | |
| } | |
| /** | |
| * An opportunity to lazily evaluate desktop property values. | |
| * @return the desktop property or null | |
| * @param name the name | |
| */ | |
| protected Object lazilyLoadDesktopProperty(String name) { | |
| return null; | |
| } | |
| /** | |
| * initializeDesktopProperties | |
| */ | |
| protected void initializeDesktopProperties() { | |
| } | |
| /** | |
| * Adds the specified property change listener for the named desktop | |
| * property. When a {@link java.beans.PropertyChangeListenerProxy} object is added, | |
| * its property name is ignored, and the wrapped listener is added. | |
| * If {@code name} is {@code null} or {@code pcl} is {@code null}, | |
| * no exception is thrown and no action is performed. | |
| * | |
| * @param name The name of the property to listen for | |
| * @param pcl The property change listener | |
| * @see PropertyChangeSupport#addPropertyChangeListener(String, | |
| PropertyChangeListener) | |
| * @since 1.2 | |
| */ | |
| public void addPropertyChangeListener(String name, PropertyChangeListener pcl) { | |
| desktopPropsSupport.addPropertyChangeListener(name, pcl); | |
| } | |
| /** | |
| * Removes the specified property change listener for the named | |
| * desktop property. When a {@link java.beans.PropertyChangeListenerProxy} object | |
| * is removed, its property name is ignored, and | |
| * the wrapped listener is removed. | |
| * If {@code name} is {@code null} or {@code pcl} is {@code null}, | |
| * no exception is thrown and no action is performed. | |
| * | |
| * @param name The name of the property to remove | |
| * @param pcl The property change listener | |
| * @see PropertyChangeSupport#removePropertyChangeListener(String, | |
| PropertyChangeListener) | |
| * @since 1.2 | |
| */ | |
| public void removePropertyChangeListener(String name, PropertyChangeListener pcl) { | |
| desktopPropsSupport.removePropertyChangeListener(name, pcl); | |
| } | |
| /** | |
| * Returns an array of all the property change listeners | |
| * registered on this toolkit. The returned array | |
| * contains {@link java.beans.PropertyChangeListenerProxy} objects | |
| * that associate listeners with the names of desktop properties. | |
| * | |
| * @return all of this toolkit's {@link PropertyChangeListener} | |
| * objects wrapped in {@code java.beans.PropertyChangeListenerProxy} objects | |
| * or an empty array if no listeners are added | |
| * | |
| * @see PropertyChangeSupport#getPropertyChangeListeners() | |
| * @since 1.4 | |
| */ | |
| public PropertyChangeListener[] getPropertyChangeListeners() { | |
| return desktopPropsSupport.getPropertyChangeListeners(); | |
| } | |
| /** | |
| * Returns an array of all property change listeners | |
| * associated with the specified name of a desktop property. | |
| * | |
| * @param propertyName the named property | |
| * @return all of the {@code PropertyChangeListener} objects | |
| * associated with the specified name of a desktop property | |
| * or an empty array if no such listeners are added | |
| * | |
| * @see PropertyChangeSupport#getPropertyChangeListeners(String) | |
| * @since 1.4 | |
| */ | |
| public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { | |
| return desktopPropsSupport.getPropertyChangeListeners(propertyName); | |
| } | |
| /** | |
| * The desktop properties. | |
| */ | |
| protected final Map<String,Object> desktopProperties = | |
| new HashMap<String,Object>(); | |
| /** | |
| * The desktop properties change support. | |
| */ | |
| protected final PropertyChangeSupport desktopPropsSupport = | |
| Toolkit.createPropertyChangeSupport(this); | |
| /** | |
| * Returns whether the always-on-top mode is supported by this toolkit. | |
| * To detect whether the always-on-top mode is supported for a | |
| * particular Window, use {@link Window#isAlwaysOnTopSupported}. | |
| * @return {@code true}, if current toolkit supports the always-on-top mode, | |
| * otherwise returns {@code false} | |
| * @see Window#isAlwaysOnTopSupported | |
| * @see Window#setAlwaysOnTop(boolean) | |
| * @since 1.6 | |
| */ | |
| public boolean isAlwaysOnTopSupported() { | |
| return true; | |
| } | |
| /** | |
| * Returns whether the given modality type is supported by this toolkit. If | |
| * a dialog with unsupported modality type is created, then | |
| * {@code Dialog.ModalityType.MODELESS} is used instead. | |
| * | |
| * @param modalityType modality type to be checked for support by this toolkit | |
| * | |
| * @return {@code true}, if current toolkit supports given modality | |
| * type, {@code false} otherwise | |
| * | |
| * @see java.awt.Dialog.ModalityType | |
| * @see java.awt.Dialog#getModalityType | |
| * @see java.awt.Dialog#setModalityType | |
| * | |
| * @since 1.6 | |
| */ | |
| public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType); | |
| /** | |
| * Returns whether the given modal exclusion type is supported by this | |
| * toolkit. If an unsupported modal exclusion type property is set on a window, | |
| * then {@code Dialog.ModalExclusionType.NO_EXCLUDE} is used instead. | |
| * | |
| * @param modalExclusionType modal exclusion type to be checked for support by this toolkit | |
| * | |
| * @return {@code true}, if current toolkit supports given modal exclusion | |
| * type, {@code false} otherwise | |
| * | |
| * @see java.awt.Dialog.ModalExclusionType | |
| * @see java.awt.Window#getModalExclusionType | |
| * @see java.awt.Window#setModalExclusionType | |
| * | |
| * @since 1.6 | |
| */ | |
| public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType); | |
| // 8014718: logging has been removed from SunToolkit | |
| private static final int LONG_BITS = 64; | |
| private int[] calls = new int[LONG_BITS]; | |
| private static volatile long enabledOnToolkitMask; | |
| private AWTEventListener eventListener = null; | |
| private final WeakHashMap<AWTEventListener, SelectiveAWTEventListener> listener2SelectiveListener = new WeakHashMap<>(); | |
| /* | |
| * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy, | |
| * if the listener is proxied. | |
| */ | |
| private static AWTEventListener deProxyAWTEventListener(AWTEventListener l) | |
| { | |
| AWTEventListener localL = l; | |
| if (localL == null) { | |
| return null; | |
| } | |
| // if user passed in a AWTEventListenerProxy object, extract | |
| // the listener | |
| if (l instanceof AWTEventListenerProxy) { | |
| localL = ((AWTEventListenerProxy)l).getListener(); | |
| } | |
| return localL; | |
| } | |
| /** | |
| * Adds an AWTEventListener to receive all AWTEvents dispatched | |
| * system-wide that conform to the given {@code eventMask}. | |
| * <p> | |
| * {@code eventMask} is a bitmask of event types to receive. | |
| * It is constructed by bitwise OR-ing together the event masks | |
| * defined in {@code AWTEvent}. | |
| * <p> | |
| * Note: event listener use is not recommended for normal | |
| * application use, but are intended solely to support special | |
| * purpose facilities including support for accessibility, | |
| * event record/playback, and diagnostic tracing. | |
| * | |
| * If listener is null, no exception is thrown and no action is performed. | |
| * | |
| * @param listener the event listener. | |
| * @param eventMask the bitmask of event types to receive | |
| * @see #removeAWTEventListener | |
| * @see #getAWTEventListeners | |
| * @see java.awt.AWTEvent | |
| * @see java.awt.event.AWTEventListener | |
| * @see java.awt.event.AWTEventListenerProxy | |
| * @since 1.2 | |
| */ | |
| public void addAWTEventListener(AWTEventListener listener, long eventMask) { | |
| AWTEventListener localL = deProxyAWTEventListener(listener); | |
| if (localL == null) { | |
| return; | |
| } | |
| synchronized (this) { | |
| SelectiveAWTEventListener selectiveListener = | |
| listener2SelectiveListener.get(localL); | |
| if (selectiveListener == null) { | |
| // Create a new selectiveListener. | |
| selectiveListener = new SelectiveAWTEventListener(localL, | |
| eventMask); | |
| listener2SelectiveListener.put(localL, selectiveListener); | |
| eventListener = ToolkitEventMulticaster.add(eventListener, | |
| selectiveListener); | |
| } | |
| // OR the eventMask into the selectiveListener's event mask. | |
| selectiveListener.orEventMasks(eventMask); | |
| enabledOnToolkitMask |= eventMask; | |
| long mask = eventMask; | |
| for (int i=0; i<LONG_BITS; i++) { | |
| // If no bits are set, break out of loop. | |
| if (mask == 0) { | |
| break; | |
| } | |
| if ((mask & 1L) != 0) { // Always test bit 0. | |
| calls[i]++; | |
| } | |
| mask >>>= 1; // Right shift, fill with zeros on left. | |
| } | |
| } | |
| } | |
| /** | |
| * Removes an AWTEventListener from receiving dispatched AWTEvents. | |
| * <p> | |
| * Note: event listener use is not recommended for normal | |
| * application use, but are intended solely to support special | |
| * purpose facilities including support for accessibility, | |
| * event record/playback, and diagnostic tracing. | |
| * | |
| * If listener is null, no exception is thrown and no action is performed. | |
| * | |
| * @param listener the event listener. | |
| * @see #addAWTEventListener | |
| * @see #getAWTEventListeners | |
| * @see java.awt.AWTEvent | |
| * @see java.awt.event.AWTEventListener | |
| * @see java.awt.event.AWTEventListenerProxy | |
| * @since 1.2 | |
| */ | |
| public void removeAWTEventListener(AWTEventListener listener) { | |
| AWTEventListener localL = deProxyAWTEventListener(listener); | |
| if (localL == null) { | |
| return; | |
| } | |
| synchronized (this) { | |
| SelectiveAWTEventListener selectiveListener = | |
| listener2SelectiveListener.remove(localL); | |
| if (selectiveListener != null) { | |
| int[] listenerCalls = selectiveListener.getCalls(); | |
| for (int i=0; i<LONG_BITS; i++) { | |
| calls[i] -= listenerCalls[i]; | |
| assert calls[i] >= 0: "Negative Listeners count"; | |
| if (calls[i] == 0) { | |
| enabledOnToolkitMask &= ~(1L<<i); | |
| } | |
| } | |
| } | |
| eventListener = ToolkitEventMulticaster.remove(eventListener, | |
| (selectiveListener == null) ? localL : selectiveListener); | |
| } | |
| } | |
| static boolean enabledOnToolkit(long eventMask) { | |
| return (enabledOnToolkitMask & eventMask) != 0; | |
| } | |
| synchronized int countAWTEventListeners(long eventMask) { | |
| int ci = 0; | |
| for (; eventMask != 0; eventMask >>>= 1, ci++) { | |
| } | |
| ci--; | |
| return calls[ci]; | |
| } | |
| /** | |
| * Returns an array of all the {@code AWTEventListener}s | |
| * registered on this toolkit. | |
| * Listeners can be returned | |
| * within {@code AWTEventListenerProxy} objects, which also contain | |
| * the event mask for the given listener. | |
| * Note that listener objects | |
| * added multiple times appear only once in the returned array. | |
| * | |
| * @return all of the {@code AWTEventListener}s or an empty | |
| * array if no listeners are currently registered | |
| * @see #addAWTEventListener | |
| * @see #removeAWTEventListener | |
| * @see java.awt.AWTEvent | |
| * @see java.awt.event.AWTEventListener | |
| * @see java.awt.event.AWTEventListenerProxy | |
| * @since 1.4 | |
| */ | |
| public AWTEventListener[] getAWTEventListeners() { | |
| synchronized (this) { | |
| EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); | |
| AWTEventListener[] ret = new AWTEventListener[la.length]; | |
| for (int i = 0; i < la.length; i++) { | |
| SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; | |
| AWTEventListener tempL = sael.getListener(); | |
| //assert tempL is not an AWTEventListenerProxy - we should | |
| // have weeded them all out | |
| // don't want to wrap a proxy inside a proxy | |
| ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL); | |
| } | |
| return ret; | |
| } | |
| } | |
| /** | |
| * Returns an array of all the {@code AWTEventListener}s | |
| * registered on this toolkit which listen to all of the event | |
| * types specified in the {@code eventMask} argument. | |
| * Listeners can be returned | |
| * within {@code AWTEventListenerProxy} objects, which also contain | |
| * the event mask for the given listener. | |
| * Note that listener objects | |
| * added multiple times appear only once in the returned array. | |
| * | |
| * @param eventMask the bitmask of event types to listen for | |
| * @return all of the {@code AWTEventListener}s registered | |
| * on this toolkit for the specified | |
| * event types, or an empty array if no such listeners | |
| * are currently registered | |
| * @see #addAWTEventListener | |
| * @see #removeAWTEventListener | |
| * @see java.awt.AWTEvent | |
| * @see java.awt.event.AWTEventListener | |
| * @see java.awt.event.AWTEventListenerProxy | |
| * @since 1.4 | |
| */ | |
| public AWTEventListener[] getAWTEventListeners(long eventMask) { | |
| synchronized (this) { | |
| EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); | |
| java.util.List<AWTEventListenerProxy> list = new ArrayList<>(la.length); | |
| for (int i = 0; i < la.length; i++) { | |
| SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; | |
| if ((sael.getEventMask() & eventMask) == eventMask) { | |
| //AWTEventListener tempL = sael.getListener(); | |
| list.add(new AWTEventListenerProxy(sael.getEventMask(), | |
| sael.getListener())); | |
| } | |
| } | |
| return list.toArray(new AWTEventListener[0]); | |
| } | |
| } | |
| /* | |
| * This method notifies any AWTEventListeners that an event | |
| * is about to be dispatched. | |
| * | |
| * @param theEvent the event which will be dispatched. | |
| */ | |
| void notifyAWTEventListeners(AWTEvent theEvent) { | |
| // This is a workaround for headless toolkits. It would be | |
| // better to override this method but it is declared package private. | |
| // "this instanceof" syntax defeats polymorphism. | |
| // --mm, 03/03/00 | |
| if (this instanceof HeadlessToolkit) { | |
| ((HeadlessToolkit)this).getUnderlyingToolkit() | |
| .notifyAWTEventListeners(theEvent); | |
| return; | |
| } | |
| AWTEventListener eventListener = this.eventListener; | |
| if (eventListener != null) { | |
| eventListener.eventDispatched(theEvent); | |
| } | |
| } | |
| private static class ToolkitEventMulticaster extends AWTEventMulticaster | |
| implements AWTEventListener { | |
| // Implementation cloned from AWTEventMulticaster. | |
| ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) { | |
| super(a, b); | |
| } | |
| @SuppressWarnings("overloads") | |
| static AWTEventListener add(AWTEventListener a, | |
| AWTEventListener b) { | |
| if (a == null) return b; | |
| if (b == null) return a; | |
| return new ToolkitEventMulticaster(a, b); | |
| } | |
| @SuppressWarnings("overloads") | |
| static AWTEventListener remove(AWTEventListener l, | |
| AWTEventListener oldl) { | |
| return (AWTEventListener) removeInternal(l, oldl); | |
| } | |
| // #4178589: must overload remove(EventListener) to call our add() | |
| // instead of the static addInternal() so we allocate a | |
| // ToolkitEventMulticaster instead of an AWTEventMulticaster. | |
| // Note: this method is called by AWTEventListener.removeInternal(), | |
| // so its method signature must match AWTEventListener.remove(). | |
| protected EventListener remove(EventListener oldl) { | |
| if (oldl == a) return b; | |
| if (oldl == b) return a; | |
| AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl); | |
| AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl); | |
| if (a2 == a && b2 == b) { | |
| return this; // it's not here | |
| } | |
| return add(a2, b2); | |
| } | |
| public void eventDispatched(AWTEvent event) { | |
| ((AWTEventListener)a).eventDispatched(event); | |
| ((AWTEventListener)b).eventDispatched(event); | |
| } | |
| } | |
| private static class SelectiveAWTEventListener implements AWTEventListener { | |
| AWTEventListener listener; | |
| private long eventMask; | |
| // This array contains the number of times to call the eventlistener | |
| // for each event type. | |
| int[] calls = new int[Toolkit.LONG_BITS]; | |
| public AWTEventListener getListener() {return listener;} | |
| public long getEventMask() {return eventMask;} | |
| public int[] getCalls() {return calls;} | |
| public void orEventMasks(long mask) { | |
| eventMask |= mask; | |
| // For each event bit set in mask, increment its call count. | |
| for (int i=0; i<Toolkit.LONG_BITS; i++) { | |
| // If no bits are set, break out of loop. | |
| if (mask == 0) { | |
| break; | |
| } | |
| if ((mask & 1L) != 0) { // Always test bit 0. | |
| calls[i]++; | |
| } | |
| mask >>>= 1; // Right shift, fill with zeros on left. | |
| } | |
| } | |
| SelectiveAWTEventListener(AWTEventListener l, long mask) { | |
| listener = l; | |
| eventMask = mask; | |
| } | |
| public void eventDispatched(AWTEvent event) { | |
| long eventBit = 0; // Used to save the bit of the event type. | |
| if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 && | |
| event.id >= ComponentEvent.COMPONENT_FIRST && | |
| event.id <= ComponentEvent.COMPONENT_LAST) | |
| || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 && | |
| event.id >= ContainerEvent.CONTAINER_FIRST && | |
| event.id <= ContainerEvent.CONTAINER_LAST) | |
| || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 && | |
| event.id >= FocusEvent.FOCUS_FIRST && | |
| event.id <= FocusEvent.FOCUS_LAST) | |
| || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 && | |
| event.id >= KeyEvent.KEY_FIRST && | |
| event.id <= KeyEvent.KEY_LAST) | |
| || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && | |
| event.id == MouseEvent.MOUSE_WHEEL) | |
| || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && | |
| (event.id == MouseEvent.MOUSE_MOVED || | |
| event.id == MouseEvent.MOUSE_DRAGGED)) | |
| || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 && | |
| event.id != MouseEvent.MOUSE_MOVED && | |
| event.id != MouseEvent.MOUSE_DRAGGED && | |
| event.id != MouseEvent.MOUSE_WHEEL && | |
| event.id >= MouseEvent.MOUSE_FIRST && | |
| event.id <= MouseEvent.MOUSE_LAST) | |
| || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 && | |
| (event.id >= WindowEvent.WINDOW_FIRST && | |
| event.id <= WindowEvent.WINDOW_LAST)) | |
| || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 && | |
| event.id >= ActionEvent.ACTION_FIRST && | |
| event.id <= ActionEvent.ACTION_LAST) | |
| || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 && | |
| event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && | |
| event.id <= AdjustmentEvent.ADJUSTMENT_LAST) | |
| || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 && | |
| event.id >= ItemEvent.ITEM_FIRST && | |
| event.id <= ItemEvent.ITEM_LAST) | |
| || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 && | |
| event.id >= TextEvent.TEXT_FIRST && | |
| event.id <= TextEvent.TEXT_LAST) | |
| || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 && | |
| event.id >= InputMethodEvent.INPUT_METHOD_FIRST && | |
| event.id <= InputMethodEvent.INPUT_METHOD_LAST) | |
| || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 && | |
| event.id >= PaintEvent.PAINT_FIRST && | |
| event.id <= PaintEvent.PAINT_LAST) | |
| || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 && | |
| event.id >= InvocationEvent.INVOCATION_FIRST && | |
| event.id <= InvocationEvent.INVOCATION_LAST) | |
| || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && | |
| event.id == HierarchyEvent.HIERARCHY_CHANGED) | |
| || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && | |
| (event.id == HierarchyEvent.ANCESTOR_MOVED || | |
| event.id == HierarchyEvent.ANCESTOR_RESIZED)) | |
| || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && | |
| event.id == WindowEvent.WINDOW_STATE_CHANGED) | |
| || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && | |
| (event.id == WindowEvent.WINDOW_GAINED_FOCUS || | |
| event.id == WindowEvent.WINDOW_LOST_FOCUS)) | |
| || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && | |
| (event instanceof sun.awt.UngrabEvent))) { | |
| // Get the index of the call count for this event type. | |
| // Instead of using Math.log(...) we will calculate it with | |
| // bit shifts. That's what previous implementation looked like: | |
| // | |
| // int ci = (int) (Math.log(eventBit)/Math.log(2)); | |
| int ci = 0; | |
| for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) { | |
| } | |
| ci--; | |
| // Call the listener as many times as it was added for this | |
| // event type. | |
| for (int i=0; i<calls[ci]; i++) { | |
| listener.eventDispatched(event); | |
| } | |
| } | |
| } | |
| } | |
| /** | |
| * Returns a map of visual attributes for the abstract level description | |
| * of the given input method highlight, or null if no mapping is found. | |
| * The style field of the input method highlight is ignored. The map | |
| * returned is unmodifiable. | |
| * @param highlight input method highlight | |
| * @return style attribute map, or {@code null} | |
| * @throws HeadlessException if | |
| * {@code GraphicsEnvironment.isHeadless} returns true | |
| * @see java.awt.GraphicsEnvironment#isHeadless | |
| * @since 1.3 | |
| */ | |
| public abstract Map<java.awt.font.TextAttribute,?> | |
| mapInputMethodHighlight(InputMethodHighlight highlight) | |
| throws HeadlessException; | |
| private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) { | |
| if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) { | |
| return new DesktopPropertyChangeSupport(toolkit); | |
| } else { | |
| return new PropertyChangeSupport(toolkit); | |
| } | |
| } | |
| /** | |
| * This is a utility class to support desktop properties. | |
| */ | |
| @SuppressWarnings("serial") | |
| private static class DesktopPropertyChangeSupport extends PropertyChangeSupport { | |
| private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = | |
| new StringBuilder("desktop property change support key"); | |
| private final Object source; | |
| public DesktopPropertyChangeSupport(Object sourceBean) { | |
| super(sourceBean); | |
| source = sourceBean; | |
| } | |
| @Override | |
| public synchronized void addPropertyChangeListener( | |
| String propertyName, | |
| PropertyChangeListener listener) | |
| { | |
| PropertyChangeSupport pcs = (PropertyChangeSupport) | |
| AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); | |
| if (null == pcs) { | |
| pcs = new PropertyChangeSupport(source); | |
| AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); | |
| } | |
| pcs.addPropertyChangeListener(propertyName, listener); | |
| } | |
| @Override | |
| public synchronized void removePropertyChangeListener( | |
| String propertyName, | |
| PropertyChangeListener listener) | |
| { | |
| PropertyChangeSupport pcs = (PropertyChangeSupport) | |
| AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); | |
| if (null != pcs) { | |
| pcs.removePropertyChangeListener(propertyName, listener); | |
| } | |
| } | |
| @Override | |
| public synchronized PropertyChangeListener[] getPropertyChangeListeners() | |
| { | |
| PropertyChangeSupport pcs = (PropertyChangeSupport) | |
| AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); | |
| if (null != pcs) { | |
| return pcs.getPropertyChangeListeners(); | |
| } else { | |
| return new PropertyChangeListener[0]; | |
| } | |
| } | |
| @Override | |
| public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName) | |
| { | |
| PropertyChangeSupport pcs = (PropertyChangeSupport) | |
| AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); | |
| if (null != pcs) { | |
| return pcs.getPropertyChangeListeners(propertyName); | |
| } else { | |
| return new PropertyChangeListener[0]; | |
| } | |
| } | |
| @Override | |
| public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { | |
| PropertyChangeSupport pcs = (PropertyChangeSupport) | |
| AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); | |
| if (null == pcs) { | |
| pcs = new PropertyChangeSupport(source); | |
| AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); | |
| } | |
| pcs.addPropertyChangeListener(listener); | |
| } | |
| @Override | |
| public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { | |
| PropertyChangeSupport pcs = (PropertyChangeSupport) | |
| AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); | |
| if (null != pcs) { | |
| pcs.removePropertyChangeListener(listener); | |
| } | |
| } | |
| /* | |
| * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport | |
| * use this method. If this will be changed we will need to change this class. | |
| */ | |
| @Override | |
| public void firePropertyChange(final PropertyChangeEvent evt) { | |
| Object oldValue = evt.getOldValue(); | |
| Object newValue = evt.getNewValue(); | |
| String propertyName = evt.getPropertyName(); | |
| if (oldValue != null && newValue != null && oldValue.equals(newValue)) { | |
| return; | |
| } | |
| Runnable updater = new Runnable() { | |
| public void run() { | |
| PropertyChangeSupport pcs = (PropertyChangeSupport) | |
| AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); | |
| if (null != pcs) { | |
| pcs.firePropertyChange(evt); | |
| } | |
| } | |
| }; | |
| final AppContext currentAppContext = AppContext.getAppContext(); | |
| for (AppContext appContext : AppContext.getAppContexts()) { | |
| if (null == appContext || appContext.isDisposed()) { | |
| continue; | |
| } | |
| if (currentAppContext == appContext) { | |
| updater.run(); | |
| } else { | |
| final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT); | |
| SunToolkit.postEvent(appContext, e); | |
| } | |
| } | |
| } | |
| } | |
| /** | |
| * Reports whether events from extra mouse buttons are allowed to be processed and posted into | |
| * {@code EventQueue}. | |
| * <br> | |
| * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons} | |
| * property before the {@code Toolkit} class initialization. This setting could be done on the application | |
| * startup by the following command: | |
| * <pre> | |
| * java -Dsun.awt.enableExtraMouseButtons=false Application | |
| * </pre> | |
| * Alternatively, the property could be set in the application by using the following code: | |
| * <pre> | |
| * System.setProperty("sun.awt.enableExtraMouseButtons", "true"); | |
| * </pre> | |
| * before the {@code Toolkit} class initialization. | |
| * If not set by the time of the {@code Toolkit} class initialization, this property will be | |
| * initialized with {@code true}. | |
| * Changing this value after the {@code Toolkit} class initialization will have no effect. | |
| * | |
| * @throws HeadlessException if GraphicsEnvironment.isHeadless() returns true | |
| * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted; | |
| * {@code false} otherwise | |
| * @see System#getProperty(String propertyName) | |
| * @see System#setProperty(String propertyName, String value) | |
| * @see java.awt.EventQueue | |
| * @since 1.7 | |
| */ | |
| public boolean areExtraMouseButtonsEnabled() throws HeadlessException { | |
| GraphicsEnvironment.checkHeadless(); | |
| return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled(); | |
| } | |
| } |