0001 /*
0002 * Copyright 1995-2007 Sun Microsystems, Inc. All Rights Reserved.
0003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0004 *
0005 * This code is free software; you can redistribute it and/or modify it
0006 * under the terms of the GNU General Public License version 2 only, as
0007 * published by the Free Software Foundation. Sun designates this
0008 * particular file as subject to the "Classpath" exception as provided
0009 * by Sun in the LICENSE file that accompanied this code.
0010 *
0011 * This code is distributed in the hope that it will be useful, but WITHOUT
0012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0014 * version 2 for more details (a copy is included in the LICENSE file that
0015 * accompanied this code).
0016 *
0017 * You should have received a copy of the GNU General Public License version
0018 * 2 along with this work; if not, write to the Free Software Foundation,
0019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0020 *
0021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
0022 * CA 95054 USA or visit www.sun.com if you need additional information or
0023 * have any questions.
0024 */
0025
0026 package java.awt;
0027
0028 import java.beans.PropertyChangeEvent;
0029 import java.util.MissingResourceException;
0030 import java.util.Properties;
0031 import java.util.ResourceBundle;
0032 import java.util.StringTokenizer;
0033 import java.awt.event.*;
0034 import java.awt.peer.*;
0035 import java.awt.im.InputMethodHighlight;
0036 import java.awt.image.ImageObserver;
0037 import java.awt.image.ImageProducer;
0038 import java.awt.image.ColorModel;
0039 import java.awt.datatransfer.Clipboard;
0040 import java.awt.dnd.DragSource;
0041 import java.awt.dnd.DragGestureRecognizer;
0042 import java.awt.dnd.DragGestureEvent;
0043 import java.awt.dnd.DragGestureListener;
0044 import java.awt.dnd.InvalidDnDOperationException;
0045 import java.awt.dnd.peer.DragSourceContextPeer;
0046 import java.net.URL;
0047 import java.io.File;
0048 import java.io.FileInputStream;
0049
0050 import java.util.EventListener;
0051 import java.util.Map;
0052 import java.util.HashMap;
0053 import java.util.WeakHashMap;
0054 import java.util.ArrayList;
0055
0056 import java.beans.PropertyChangeListener;
0057 import java.beans.PropertyChangeSupport;
0058 import sun.awt.AppContext;
0059
0060 import sun.awt.DebugHelper;
0061 import sun.awt.HeadlessToolkit;
0062 import sun.awt.NullComponentPeer;
0063 import sun.awt.PeerEvent;
0064 import sun.awt.SunToolkit;
0065 import sun.security.util.SecurityConstants;
0066
0067 import sun.util.CoreResourceBundleControl;
0068
0069 /**
0070 * This class is the abstract superclass of all actual
0071 * implementations of the Abstract Window Toolkit. Subclasses of
0072 * <code>Toolkit</code> are used to bind the various components
0073 * to particular native toolkit implementations.
0074 * <p>
0075 * Many GUI operations may be performed asynchronously. This
0076 * means that if you set the state of a component, and then
0077 * immediately query the state, the returned value may not yet
0078 * reflect the requested change. This includes, but is not
0079 * limited to:
0080 * <ul>
0081 * <li>Scrolling to a specified position.
0082 * <br>For example, calling <code>ScrollPane.setScrollPosition</code>
0083 * and then <code>getScrollPosition</code> may return an incorrect
0084 * value if the original request has not yet been processed.
0085 * <p>
0086 * <li>Moving the focus from one component to another.
0087 * <br>For more information, see
0088 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#transferTiming">Timing
0089 * Focus Transfers</a>, a section in
0090 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing
0091 * Tutorial</a>.
0092 * <p>
0093 * <li>Making a top-level container visible.
0094 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>,
0095 * <code>Frame</code> or <code>Dialog</code> may occur
0096 * asynchronously.
0097 * <p>
0098 * <li>Setting the size or location of a top-level container.
0099 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or
0100 * <code>setLocation</code> on a <code>Window</code>,
0101 * <code>Frame</code> or <code>Dialog</code> are forwarded
0102 * to the underlying window management system and may be
0103 * ignored or modified. See {@link java.awt.Window} for
0104 * more information.
0105 * </ul>
0106 * <p>
0107 * Most applications should not call any of the methods in this
0108 * class directly. The methods defined by <code>Toolkit</code> are
0109 * the "glue" that joins the platform-independent classes in the
0110 * <code>java.awt</code> package with their counterparts in
0111 * <code>java.awt.peer</code>. Some methods defined by
0112 * <code>Toolkit</code> query the native operating system directly.
0113 *
0114 * @version 1.203, 12/19/03
0115 * @author Sami Shaio
0116 * @author Arthur van Hoff
0117 * @author Fred Ecks
0118 * @since JDK1.0
0119 */
0120 public abstract class Toolkit {
0121
0122 /**
0123 * Creates this toolkit's implementation of the <code>Desktop</code>
0124 * using the specified peer interface.
0125 * @param target the desktop to be implemented
0126 * @return this toolkit's implementation of the <code>Desktop</code>
0127 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0128 * returns true
0129 * @see java.awt.GraphicsEnvironment#isHeadless
0130 * @see java.awt.Desktop
0131 * @see java.awt.peer.DesktopPeer
0132 * @since 1.6
0133 */
0134 protected abstract DesktopPeer createDesktopPeer(Desktop target)
0135 throws HeadlessException;
0136
0137 /**
0138 * Creates this toolkit's implementation of <code>Button</code> using
0139 * the specified peer interface.
0140 * @param target the button to be implemented.
0141 * @return this toolkit's implementation of <code>Button</code>.
0142 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0143 * returns true
0144 * @see java.awt.GraphicsEnvironment#isHeadless
0145 * @see java.awt.Button
0146 * @see java.awt.peer.ButtonPeer
0147 */
0148 protected abstract ButtonPeer createButton(Button target)
0149 throws HeadlessException;
0150
0151 /**
0152 * Creates this toolkit's implementation of <code>TextField</code> using
0153 * the specified peer interface.
0154 * @param target the text field to be implemented.
0155 * @return this toolkit's implementation of <code>TextField</code>.
0156 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0157 * returns true
0158 * @see java.awt.GraphicsEnvironment#isHeadless
0159 * @see java.awt.TextField
0160 * @see java.awt.peer.TextFieldPeer
0161 */
0162 protected abstract TextFieldPeer createTextField(TextField target)
0163 throws HeadlessException;
0164
0165 /**
0166 * Creates this toolkit's implementation of <code>Label</code> using
0167 * the specified peer interface.
0168 * @param target the label to be implemented.
0169 * @return this toolkit's implementation of <code>Label</code>.
0170 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0171 * returns true
0172 * @see java.awt.GraphicsEnvironment#isHeadless
0173 * @see java.awt.Label
0174 * @see java.awt.peer.LabelPeer
0175 */
0176 protected abstract LabelPeer createLabel(Label target)
0177 throws HeadlessException;
0178
0179 /**
0180 * Creates this toolkit's implementation of <code>List</code> using
0181 * the specified peer interface.
0182 * @param target the list to be implemented.
0183 * @return this toolkit's implementation of <code>List</code>.
0184 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0185 * returns true
0186 * @see java.awt.GraphicsEnvironment#isHeadless
0187 * @see java.awt.List
0188 * @see java.awt.peer.ListPeer
0189 */
0190 protected abstract ListPeer createList(java.awt.List target)
0191 throws HeadlessException;
0192
0193 /**
0194 * Creates this toolkit's implementation of <code>Checkbox</code> using
0195 * the specified peer interface.
0196 * @param target the check box to be implemented.
0197 * @return this toolkit's implementation of <code>Checkbox</code>.
0198 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0199 * returns true
0200 * @see java.awt.GraphicsEnvironment#isHeadless
0201 * @see java.awt.Checkbox
0202 * @see java.awt.peer.CheckboxPeer
0203 */
0204 protected abstract CheckboxPeer createCheckbox(Checkbox target)
0205 throws HeadlessException;
0206
0207 /**
0208 * Creates this toolkit's implementation of <code>Scrollbar</code> using
0209 * the specified peer interface.
0210 * @param target the scroll bar to be implemented.
0211 * @return this toolkit's implementation of <code>Scrollbar</code>.
0212 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0213 * returns true
0214 * @see java.awt.GraphicsEnvironment#isHeadless
0215 * @see java.awt.Scrollbar
0216 * @see java.awt.peer.ScrollbarPeer
0217 */
0218 protected abstract ScrollbarPeer createScrollbar(Scrollbar target)
0219 throws HeadlessException;
0220
0221 /**
0222 * Creates this toolkit's implementation of <code>ScrollPane</code> using
0223 * the specified peer interface.
0224 * @param target the scroll pane to be implemented.
0225 * @return this toolkit's implementation of <code>ScrollPane</code>.
0226 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0227 * returns true
0228 * @see java.awt.GraphicsEnvironment#isHeadless
0229 * @see java.awt.ScrollPane
0230 * @see java.awt.peer.ScrollPanePeer
0231 * @since JDK1.1
0232 */
0233 protected abstract ScrollPanePeer createScrollPane(ScrollPane target)
0234 throws HeadlessException;
0235
0236 /**
0237 * Creates this toolkit's implementation of <code>TextArea</code> using
0238 * the specified peer interface.
0239 * @param target the text area to be implemented.
0240 * @return this toolkit's implementation of <code>TextArea</code>.
0241 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0242 * returns true
0243 * @see java.awt.GraphicsEnvironment#isHeadless
0244 * @see java.awt.TextArea
0245 * @see java.awt.peer.TextAreaPeer
0246 */
0247 protected abstract TextAreaPeer createTextArea(TextArea target)
0248 throws HeadlessException;
0249
0250 /**
0251 * Creates this toolkit's implementation of <code>Choice</code> using
0252 * the specified peer interface.
0253 * @param target the choice to be implemented.
0254 * @return this toolkit's implementation of <code>Choice</code>.
0255 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0256 * returns true
0257 * @see java.awt.GraphicsEnvironment#isHeadless
0258 * @see java.awt.Choice
0259 * @see java.awt.peer.ChoicePeer
0260 */
0261 protected abstract ChoicePeer createChoice(Choice target)
0262 throws HeadlessException;
0263
0264 /**
0265 * Creates this toolkit's implementation of <code>Frame</code> using
0266 * the specified peer interface.
0267 * @param target the frame to be implemented.
0268 * @return this toolkit's implementation of <code>Frame</code>.
0269 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0270 * returns true
0271 * @see java.awt.GraphicsEnvironment#isHeadless
0272 * @see java.awt.Frame
0273 * @see java.awt.peer.FramePeer
0274 */
0275 protected abstract FramePeer createFrame(Frame target)
0276 throws HeadlessException;
0277
0278 /**
0279 * Creates this toolkit's implementation of <code>Canvas</code> using
0280 * the specified peer interface.
0281 * @param target the canvas to be implemented.
0282 * @return this toolkit's implementation of <code>Canvas</code>.
0283 * @see java.awt.Canvas
0284 * @see java.awt.peer.CanvasPeer
0285 */
0286 protected abstract CanvasPeer createCanvas(Canvas target);
0287
0288 /**
0289 * Creates this toolkit's implementation of <code>Panel</code> using
0290 * the specified peer interface.
0291 * @param target the panel to be implemented.
0292 * @return this toolkit's implementation of <code>Panel</code>.
0293 * @see java.awt.Panel
0294 * @see java.awt.peer.PanelPeer
0295 */
0296 protected abstract PanelPeer createPanel(Panel target);
0297
0298 /**
0299 * Creates this toolkit's implementation of <code>Window</code> using
0300 * the specified peer interface.
0301 * @param target the window to be implemented.
0302 * @return this toolkit's implementation of <code>Window</code>.
0303 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0304 * returns true
0305 * @see java.awt.GraphicsEnvironment#isHeadless
0306 * @see java.awt.Window
0307 * @see java.awt.peer.WindowPeer
0308 */
0309 protected abstract WindowPeer createWindow(Window target)
0310 throws HeadlessException;
0311
0312 /**
0313 * Creates this toolkit's implementation of <code>Dialog</code> using
0314 * the specified peer interface.
0315 * @param target the dialog to be implemented.
0316 * @return this toolkit's implementation of <code>Dialog</code>.
0317 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0318 * returns true
0319 * @see java.awt.GraphicsEnvironment#isHeadless
0320 * @see java.awt.Dialog
0321 * @see java.awt.peer.DialogPeer
0322 */
0323 protected abstract DialogPeer createDialog(Dialog target)
0324 throws HeadlessException;
0325
0326 /**
0327 * Creates this toolkit's implementation of <code>MenuBar</code> using
0328 * the specified peer interface.
0329 * @param target the menu bar to be implemented.
0330 * @return this toolkit's implementation of <code>MenuBar</code>.
0331 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0332 * returns true
0333 * @see java.awt.GraphicsEnvironment#isHeadless
0334 * @see java.awt.MenuBar
0335 * @see java.awt.peer.MenuBarPeer
0336 */
0337 protected abstract MenuBarPeer createMenuBar(MenuBar target)
0338 throws HeadlessException;
0339
0340 /**
0341 * Creates this toolkit's implementation of <code>Menu</code> using
0342 * the specified peer interface.
0343 * @param target the menu to be implemented.
0344 * @return this toolkit's implementation of <code>Menu</code>.
0345 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0346 * returns true
0347 * @see java.awt.GraphicsEnvironment#isHeadless
0348 * @see java.awt.Menu
0349 * @see java.awt.peer.MenuPeer
0350 */
0351 protected abstract MenuPeer createMenu(Menu target)
0352 throws HeadlessException;
0353
0354 /**
0355 * Creates this toolkit's implementation of <code>PopupMenu</code> using
0356 * the specified peer interface.
0357 * @param target the popup menu to be implemented.
0358 * @return this toolkit's implementation of <code>PopupMenu</code>.
0359 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0360 * returns true
0361 * @see java.awt.GraphicsEnvironment#isHeadless
0362 * @see java.awt.PopupMenu
0363 * @see java.awt.peer.PopupMenuPeer
0364 * @since JDK1.1
0365 */
0366 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target)
0367 throws HeadlessException;
0368
0369 /**
0370 * Creates this toolkit's implementation of <code>MenuItem</code> using
0371 * the specified peer interface.
0372 * @param target the menu item to be implemented.
0373 * @return this toolkit's implementation of <code>MenuItem</code>.
0374 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0375 * returns true
0376 * @see java.awt.GraphicsEnvironment#isHeadless
0377 * @see java.awt.MenuItem
0378 * @see java.awt.peer.MenuItemPeer
0379 */
0380 protected abstract MenuItemPeer createMenuItem(MenuItem target)
0381 throws HeadlessException;
0382
0383 /**
0384 * Creates this toolkit's implementation of <code>FileDialog</code> using
0385 * the specified peer interface.
0386 * @param target the file dialog to be implemented.
0387 * @return this toolkit's implementation of <code>FileDialog</code>.
0388 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0389 * returns true
0390 * @see java.awt.GraphicsEnvironment#isHeadless
0391 * @see java.awt.FileDialog
0392 * @see java.awt.peer.FileDialogPeer
0393 */
0394 protected abstract FileDialogPeer createFileDialog(FileDialog target)
0395 throws HeadlessException;
0396
0397 /**
0398 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using
0399 * the specified peer interface.
0400 * @param target the checkbox menu item to be implemented.
0401 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>.
0402 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0403 * returns true
0404 * @see java.awt.GraphicsEnvironment#isHeadless
0405 * @see java.awt.CheckboxMenuItem
0406 * @see java.awt.peer.CheckboxMenuItemPeer
0407 */
0408 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem(
0409 CheckboxMenuItem target) throws HeadlessException;
0410
0411 /**
0412 * Obtains this toolkit's implementation of helper class for
0413 * <code>MouseInfo</code> operations.
0414 * @return this toolkit's implementation of helper for <code>MouseInfo</code>
0415 * @throws UnsupportedOperationException if this operation is not implemented
0416 * @see java.awt.peer.MouseInfoPeer
0417 * @see java.awt.MouseInfo
0418 * @since 1.5
0419 */
0420 protected MouseInfoPeer getMouseInfoPeer() {
0421 throw new UnsupportedOperationException("Not implemented");
0422 }
0423
0424 private static LightweightPeer lightweightMarker;
0425
0426 /**
0427 * Creates a peer for a component or container. This peer is windowless
0428 * and allows the Component and Container classes to be extended directly
0429 * to create windowless components that are defined entirely in java.
0430 *
0431 * @param target The Component to be created.
0432 */
0433 protected LightweightPeer createComponent(Component target) {
0434 if (lightweightMarker == null) {
0435 lightweightMarker = new NullComponentPeer();
0436 }
0437 return lightweightMarker;
0438 }
0439
0440 /**
0441 * Creates this toolkit's implementation of <code>Font</code> using
0442 * the specified peer interface.
0443 * @param name the font to be implemented
0444 * @param style the style of the font, such as <code>PLAIN</code>,
0445 * <code>BOLD</code>, <code>ITALIC</code>, or a combination
0446 * @return this toolkit's implementation of <code>Font</code>
0447 * @see java.awt.Font
0448 * @see java.awt.peer.FontPeer
0449 * @see java.awt.GraphicsEnvironment#getAllFonts
0450 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts
0451 */
0452 @Deprecated
0453 protected abstract FontPeer getFontPeer(String name, int style);
0454
0455 // The following method is called by the private method
0456 // <code>updateSystemColors</code> in <code>SystemColor</code>.
0457
0458 /**
0459 * Fills in the integer array that is supplied as an argument
0460 * with the current system color values.
0461 *
0462 * @param systemColors an integer array.
0463 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0464 * returns true
0465 * @see java.awt.GraphicsEnvironment#isHeadless
0466 * @since JDK1.1
0467 */
0468 protected void loadSystemColors(int[] systemColors)
0469 throws HeadlessException {
0470 }
0471
0472 /**
0473 * Controls whether the layout of Containers is validated dynamically
0474 * during resizing, or statically, after resizing is complete.
0475 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled
0476 * in this program and is supported by this operating system
0477 * and/or window manager.
0478 * Note that this feature is supported not on all platforms, and
0479 * conversely, that this feature cannot be turned off on some platforms.
0480 * On these platforms where dynamic layout during resizing is not supported
0481 * (or is always supported), setting this property has no effect.
0482 * Note that this feature can be set or unset as a property of the
0483 * operating system or window manager on some platforms. On such
0484 * platforms, the dynamic resize property must be set at the operating
0485 * system or window manager level before this method can take effect.
0486 * This method does not change support or settings of the underlying
0487 * operating system or
0488 * window manager. The OS/WM support can be
0489 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method.
0490 *
0491 * @param dynamic If true, Containers should re-layout their
0492 * components as the Container is being resized. If false,
0493 * the layout will be validated after resizing is completed.
0494 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0495 * returns true
0496 * @see #isDynamicLayoutSet()
0497 * @see #isDynamicLayoutActive()
0498 * @see #getDesktopProperty(String propertyName)
0499 * @see java.awt.GraphicsEnvironment#isHeadless
0500 * @since 1.4
0501 */
0502 public void setDynamicLayout(boolean dynamic)
0503 throws HeadlessException {
0504 }
0505
0506 /**
0507 * Returns whether the layout of Containers is validated dynamically
0508 * during resizing, or statically, after resizing is complete.
0509 * Note: this method returns the value that was set programmatically;
0510 * it does not reflect support at the level of the operating system
0511 * or window manager for dynamic layout on resizing, or the current
0512 * operating system or window manager settings. The OS/WM support can
0513 * be queried using getDesktopProperty("awt.dynamicLayoutSupported").
0514 *
0515 * @return true if validation of Containers is done dynamically,
0516 * false if validation is done after resizing is finished.
0517 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0518 * returns true
0519 * @see #setDynamicLayout(boolean dynamic)
0520 * @see #isDynamicLayoutActive()
0521 * @see #getDesktopProperty(String propertyName)
0522 * @see java.awt.GraphicsEnvironment#isHeadless
0523 * @since 1.4
0524 */
0525 protected boolean isDynamicLayoutSet() throws HeadlessException {
0526 if (this != Toolkit.getDefaultToolkit()) {
0527 return Toolkit.getDefaultToolkit().isDynamicLayoutSet();
0528 } else {
0529 return false;
0530 }
0531 }
0532
0533 /**
0534 * Returns whether dynamic layout of Containers on resize is
0535 * currently active (both set in program
0536 *( {@code isDynamicLayoutSet()} )
0537 *, and supported
0538 * by the underlying operating system and/or window manager).
0539 * If dynamic layout is currently inactive then Containers
0540 * re-layout their components when resizing is completed. As a result
0541 * the {@code Component.validate()} method will be invoked only
0542 * once per resize.
0543 * If dynamic layout is currently active then Containers
0544 * re-layout their components on every native resize event and
0545 * the {@code validate()} method will be invoked each time.
0546 * The OS/WM support can be queried using
0547 * the getDesktopProperty("awt.dynamicLayoutSupported") method.
0548 *
0549 * @return true if dynamic layout of Containers on resize is
0550 * currently active, false otherwise.
0551 * @exception HeadlessException if the GraphicsEnvironment.isHeadless()
0552 * method returns true
0553 * @see #setDynamicLayout(boolean dynamic)
0554 * @see #isDynamicLayoutSet()
0555 * @see #getDesktopProperty(String propertyName)
0556 * @see java.awt.GraphicsEnvironment#isHeadless
0557 * @since 1.4
0558 */
0559 public boolean isDynamicLayoutActive() throws HeadlessException {
0560 if (this != Toolkit.getDefaultToolkit()) {
0561 return Toolkit.getDefaultToolkit().isDynamicLayoutActive();
0562 } else {
0563 return false;
0564 }
0565 }
0566
0567 /**
0568 * Gets the size of the screen. On systems with multiple displays, the
0569 * primary display is used. Multi-screen aware display dimensions are
0570 * available from <code>GraphicsConfiguration</code> and
0571 * <code>GraphicsDevice</code>.
0572 * @return the size of this toolkit's screen, in pixels.
0573 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0574 * returns true
0575 * @see java.awt.GraphicsConfiguration#getBounds
0576 * @see java.awt.GraphicsDevice#getDisplayMode
0577 * @see java.awt.GraphicsEnvironment#isHeadless
0578 */
0579 public abstract Dimension getScreenSize() throws HeadlessException;
0580
0581 /**
0582 * Returns the screen resolution in dots-per-inch.
0583 * @return this toolkit's screen resolution, in dots-per-inch.
0584 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0585 * returns true
0586 * @see java.awt.GraphicsEnvironment#isHeadless
0587 */
0588 public abstract int getScreenResolution() throws HeadlessException;
0589
0590 /**
0591 * Gets the insets of the screen.
0592 * @param gc a <code>GraphicsConfiguration</code>
0593 * @return the insets of this toolkit's screen, in pixels.
0594 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0595 * returns true
0596 * @see java.awt.GraphicsEnvironment#isHeadless
0597 * @since 1.4
0598 */
0599 public Insets getScreenInsets(GraphicsConfiguration gc)
0600 throws HeadlessException {
0601 if (this != Toolkit.getDefaultToolkit()) {
0602 return Toolkit.getDefaultToolkit().getScreenInsets(gc);
0603 } else {
0604 return new Insets(0, 0, 0, 0);
0605 }
0606 }
0607
0608 /**
0609 * Determines the color model of this toolkit's screen.
0610 * <p>
0611 * <code>ColorModel</code> is an abstract class that
0612 * encapsulates the ability to translate between the
0613 * pixel values of an image and its red, green, blue,
0614 * and alpha components.
0615 * <p>
0616 * This toolkit method is called by the
0617 * <code>getColorModel</code> method
0618 * of the <code>Component</code> class.
0619 * @return the color model of this toolkit's screen.
0620 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
0621 * returns true
0622 * @see java.awt.GraphicsEnvironment#isHeadless
0623 * @see java.awt.image.ColorModel
0624 * @see java.awt.Component#getColorModel
0625 */
0626 public abstract ColorModel getColorModel() throws HeadlessException;
0627
0628 /**
0629 * Returns the names of the available fonts in this toolkit.<p>
0630 * For 1.1, the following font names are deprecated (the replacement
0631 * name follows):
0632 * <ul>
0633 * <li>TimesRoman (use Serif)
0634 * <li>Helvetica (use SansSerif)
0635 * <li>Courier (use Monospaced)
0636 * </ul><p>
0637 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters
0638 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports
0639 * those characters.
0640 * @return the names of the available fonts in this toolkit.
0641 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()}
0642 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()
0643 */
0644 @Deprecated
0645 public abstract String[] getFontList();
0646
0647 /**
0648 * Gets the screen device metrics for rendering of the font.
0649 * @param font a font
0650 * @return the screen metrics of the specified font in this toolkit
0651 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code>
0652 * method <code>getLineMetrics</code>.
0653 * @see java.awt.font.LineMetrics
0654 * @see java.awt.Font#getLineMetrics
0655 * @see java.awt.GraphicsEnvironment#getScreenDevices
0656 */
0657 @Deprecated
0658 public abstract FontMetrics getFontMetrics(Font font);
0659
0660 /**
0661 * Synchronizes this toolkit's graphics state. Some window systems
0662 * may do buffering of graphics events.
0663 * <p>
0664 * This method ensures that the display is up-to-date. It is useful
0665 * for animation.
0666 */
0667 public abstract void sync();
0668
0669 /**
0670 * The default toolkit.
0671 */
0672 private static Toolkit toolkit;
0673
0674 /**
0675 * Used internally by the assistive technologies functions; set at
0676 * init time and used at load time
0677 */
0678 private static String atNames;
0679
0680 /**
0681 * Initializes properties related to assistive technologies.
0682 * These properties are used both in the loadAssistiveProperties()
0683 * function below, as well as other classes in the jdk that depend
0684 * on the properties (such as the use of the screen_magnifier_present
0685 * property in Java2D hardware acceleration initialization). The
0686 * initialization of the properties must be done before the platform-
0687 * specific Toolkit class is instantiated so that all necessary
0688 * properties are set up properly before any classes dependent upon them
0689 * are initialized.
0690 */
0691 private static void initAssistiveTechnologies() {
0692
0693 // Get accessibility properties
0694 final String sep = File.separator;
0695 final Properties properties = new Properties();
0696
0697 atNames = (String) java.security.AccessController
0698 .doPrivileged(new java.security.PrivilegedAction() {
0699 public Object run() {
0700
0701 // Try loading the per-user accessibility properties file.
0702 try {
0703 File propsFile = new File(System
0704 .getProperty("user.home")
0705 + sep + ".accessibility.properties");
0706 FileInputStream in = new FileInputStream(
0707 propsFile);
0708
0709 // Inputstream has been buffered in Properties class
0710 properties.load(in);
0711 in.close();
0712 } catch (Exception e) {
0713 // Per-user accessibility properties file does not exist
0714 }
0715
0716 // Try loading the system-wide accessibility properties
0717 // file only if a per-user accessibility properties
0718 // file does not exist or is empty.
0719 if (properties.size() == 0) {
0720 try {
0721 File propsFile = new File(System
0722 .getProperty("java.home")
0723 + sep
0724 + "lib"
0725 + sep
0726 + "accessibility.properties");
0727 FileInputStream in = new FileInputStream(
0728 propsFile);
0729
0730 // Inputstream has been buffered in Properties class
0731 properties.load(in);
0732 in.close();
0733 } catch (Exception e) {
0734 // System-wide accessibility properties file does
0735 // not exist;
0736 }
0737 }
0738
0739 // Get whether a screen magnifier is present. First check
0740 // the system property and then check the properties file.
0741 String magPresent = System
0742 .getProperty("javax.accessibility.screen_magnifier_present");
0743 if (magPresent == null) {
0744 magPresent = properties.getProperty(
0745 "screen_magnifier_present", null);
0746 if (magPresent != null) {
0747 System
0748 .setProperty(
0749 "javax.accessibility.screen_magnifier_present",
0750 magPresent);
0751 }
0752 }
0753
0754 // Get the names of any assistive technolgies to load. First
0755 // check the system property and then check the properties
0756 // file.
0757 String classNames = System
0758 .getProperty("javax.accessibility.assistive_technologies");
0759 if (classNames == null) {
0760 classNames = properties.getProperty(
0761 "assistive_technologies", null);
0762 if (classNames != null) {
0763 System
0764 .setProperty(
0765 "javax.accessibility.assistive_technologies",
0766 classNames);
0767 }
0768 }
0769 return classNames;
0770 }
0771 });
0772 }
0773
0774 /**
0775 * Loads additional classes into the VM, using the property
0776 * 'assistive_technologies' specified in the Sun reference
0777 * implementation by a line in the 'accessibility.properties'
0778 * file. The form is "assistive_technologies=..." where
0779 * the "..." is a comma-separated list of assistive technology
0780 * classes to load. Each class is loaded in the order given
0781 * and a single instance of each is created using
0782 * Class.forName(class).newInstance(). All errors are handled
0783 * via an AWTError exception.
0784 *
0785 * <p>The assumption is made that assistive technology classes are supplied
0786 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified
0787 * on the class path
0788 * (and therefore can be loaded using the class loader returned by
0789 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose
0790 * delegation parent is the extension class loader for installed
0791 * extensions).
0792 */
0793 private static void loadAssistiveTechnologies() {
0794 // Load any assistive technologies
0795 if (atNames != null) {
0796 ClassLoader cl = ClassLoader.getSystemClassLoader();
0797 StringTokenizer parser = new StringTokenizer(atNames, " ,");
0798 String atName;
0799 while (parser.hasMoreTokens()) {
0800 atName = parser.nextToken();
0801 try {
0802 Class clazz;
0803 if (cl != null) {
0804 clazz = cl.loadClass(atName);
0805 } else {
0806 clazz = Class.forName(atName);
0807 }
0808 clazz.newInstance();
0809 } catch (ClassNotFoundException e) {
0810 throw new AWTError(
0811 "Assistive Technology not found: " + atName);
0812 } catch (InstantiationException e) {
0813 throw new AWTError(
0814 "Could not instantiate Assistive"
0815 + " Technology: " + atName);
0816 } catch (IllegalAccessException e) {
0817 throw new AWTError("Could not access Assistive"
0818 + " Technology: " + atName);
0819 } catch (Exception e) {
0820 throw new AWTError(
0821 "Error trying to install Assistive"
0822 + " Technology: " + atName + " "
0823 + e);
0824 }
0825 }
0826 }
0827 }
0828
0829 /**
0830 * Gets the default toolkit.
0831 * <p>
0832 * If a system property named <code>"java.awt.headless"</code> is set
0833 * to <code>true</code> then the headless implementation
0834 * of <code>Toolkit</code> is used.
0835 * <p>
0836 * If there is no <code>"java.awt.headless"</code> or it is set to
0837 * <code>false</code> and there is a system property named
0838 * <code>"awt.toolkit"</code>,
0839 * that property is treated as the name of a class that is a subclass
0840 * of <code>Toolkit</code>;
0841 * otherwise the default platform-specific implementation of
0842 * <code>Toolkit</code> is used.
0843 * <p>
0844 * Also loads additional classes into the VM, using the property
0845 * 'assistive_technologies' specified in the Sun reference
0846 * implementation by a line in the 'accessibility.properties'
0847 * file. The form is "assistive_technologies=..." where
0848 * the "..." is a comma-separated list of assistive technology
0849 * classes to load. Each class is loaded in the order given
0850 * and a single instance of each is created using
0851 * Class.forName(class).newInstance(). This is done just after
0852 * the AWT toolkit is created. All errors are handled via an
0853 * AWTError exception.
0854 * @return the default toolkit.
0855 * @exception AWTError if a toolkit could not be found, or
0856 * if one could not be accessed or instantiated.
0857 */
0858 public static synchronized Toolkit getDefaultToolkit() {
0859 if (toolkit == null) {
0860 try {
0861 // We disable the JIT during toolkit initialization. This
0862 // tends to touch lots of classes that aren't needed again
0863 // later and therefore JITing is counter-productiive.
0864 java.lang.Compiler.disable();
0865
0866 java.security.AccessController
0867 .doPrivileged(new java.security.PrivilegedAction() {
0868 public Object run() {
0869 String nm = null;
0870 Class cls = null;
0871 try {
0872 nm = System.getProperty(
0873 "awt.toolkit",
0874 "sun.awt.X11.XToolkit");
0875 try {
0876 cls = Class.forName(nm);
0877 } catch (ClassNotFoundException e) {
0878 ClassLoader cl = ClassLoader
0879 .getSystemClassLoader();
0880 if (cl != null) {
0881 try {
0882 cls = cl.loadClass(nm);
0883 } catch (ClassNotFoundException ee) {
0884 throw new AWTError(
0885 "Toolkit not found: "
0886 + nm);
0887 }
0888 }
0889 }
0890 if (cls != null) {
0891 toolkit = (Toolkit) cls
0892 .newInstance();
0893 if (GraphicsEnvironment
0894 .isHeadless()) {
0895 toolkit = new HeadlessToolkit(
0896 toolkit);
0897 }
0898 }
0899 } catch (InstantiationException e) {
0900 throw new AWTError(
0901 "Could not instantiate Toolkit: "
0902 + nm);
0903 } catch (IllegalAccessException e) {
0904 throw new AWTError(
0905 "Could not access Toolkit: "
0906 + nm);
0907 }
0908 return null;
0909 }
0910 });
0911 loadAssistiveTechnologies();
0912 } finally {
0913 // Make sure to always re-enable the JIT.
0914 java.lang.Compiler.enable();
0915 }
0916 }
0917 return toolkit;
0918 }
0919
0920 /**
0921 * Returns an image which gets pixel data from the specified file,
0922 * whose format can be either GIF, JPEG or PNG.
0923 * The underlying toolkit attempts to resolve multiple requests
0924 * with the same filename to the same returned Image.
0925 * <p>
0926 * Since the mechanism required to facilitate this sharing of
0927 * <code>Image</code> objects may continue to hold onto images
0928 * that are no longer in use for an indefinite period of time,
0929 * developers are encouraged to implement their own caching of
0930 * images by using the {@link #createImage(java.lang.String) createImage}
0931 * variant wherever available.
0932 * If the image data contained in the specified file changes,
0933 * the <code>Image</code> object returned from this method may
0934 * still contain stale information which was loaded from the
0935 * file after a prior call.
0936 * Previously loaded image data can be manually discarded by
0937 * calling the {@link Image#flush flush} method on the
0938 * returned <code>Image</code>.
0939 * <p>
0940 * This method first checks if there is a security manager installed.
0941 * If so, the method calls the security manager's
0942 * <code>checkRead</code> method with the file specified to ensure
0943 * that the access to the image is allowed.
0944 * @param filename the name of a file containing pixel data
0945 * in a recognized file format.
0946 * @return an image which gets its pixel data from
0947 * the specified file.
0948 * @throws SecurityException if a security manager exists and its
0949 * checkRead method doesn't allow the operation.
0950 * @see #createImage(java.lang.String)
0951 */
0952 public abstract Image getImage(String filename);
0953
0954 /**
0955 * Returns an image which gets pixel data from the specified URL.
0956 * The pixel data referenced by the specified URL must be in one
0957 * of the following formats: GIF, JPEG or PNG.
0958 * The underlying toolkit attempts to resolve multiple requests
0959 * with the same URL to the same returned Image.
0960 * <p>
0961 * Since the mechanism required to facilitate this sharing of
0962 * <code>Image</code> objects may continue to hold onto images
0963 * that are no longer in use for an indefinite period of time,
0964 * developers are encouraged to implement their own caching of
0965 * images by using the {@link #createImage(java.net.URL) createImage}
0966 * variant wherever available.
0967 * If the image data stored at the specified URL changes,
0968 * the <code>Image</code> object returned from this method may
0969 * still contain stale information which was fetched from the
0970 * URL after a prior call.
0971 * Previously loaded image data can be manually discarded by
0972 * calling the {@link Image#flush flush} method on the
0973 * returned <code>Image</code>.
0974 * <p>
0975 * This method first checks if there is a security manager installed.
0976 * If so, the method calls the security manager's
0977 * <code>checkPermission</code> method with the
0978 * url.openConnection().getPermission() permission to ensure
0979 * that the access to the image is allowed. For compatibility
0980 * with pre-1.2 security managers, if the access is denied with
0981 * <code>FilePermission</code> or <code>SocketPermission</code>,
0982 * the method throws the <code>SecurityException</code>
0983 * if the corresponding 1.1-style SecurityManager.checkXXX method
0984 * also denies permission.
0985 * @param url the URL to use in fetching the pixel data.
0986 * @return an image which gets its pixel data from
0987 * the specified URL.
0988 * @throws SecurityException if a security manager exists and its
0989 * checkPermission method doesn't allow
0990 * the operation.
0991 * @see #createImage(java.net.URL)
0992 */
0993 public abstract Image getImage(URL url);
0994
0995 /**
0996 * Returns an image which gets pixel data from the specified file.
0997 * The returned Image is a new object which will not be shared
0998 * with any other caller of this method or its getImage variant.
0999 * <p>
1000 * This method first checks if there is a security manager installed.
1001 * If so, the method calls the security manager's
1002 * <code>checkRead</code> method with the specified file to ensure
1003 * that the image creation is allowed.
1004 * @param filename the name of a file containing pixel data
1005 * in a recognized file format.
1006 * @return an image which gets its pixel data from
1007 * the specified file.
1008 * @throws SecurityException if a security manager exists and its
1009 * checkRead method doesn't allow the operation.
1010 * @see #getImage(java.lang.String)
1011 */
1012 public abstract Image createImage(String filename);
1013
1014 /**
1015 * Returns an image which gets pixel data from the specified URL.
1016 * The returned Image is a new object which will not be shared
1017 * with any other caller of this method or its getImage variant.
1018 * <p>
1019 * This method first checks if there is a security manager installed.
1020 * If so, the method calls the security manager's
1021 * <code>checkPermission</code> method with the
1022 * url.openConnection().getPermission() permission to ensure
1023 * that the image creation is allowed. For compatibility
1024 * with pre-1.2 security managers, if the access is denied with
1025 * <code>FilePermission</code> or <code>SocketPermission</code>,
1026 * the method throws <code>SecurityException</code>
1027 * if the corresponding 1.1-style SecurityManager.checkXXX method
1028 * also denies permission.
1029 * @param url the URL to use in fetching the pixel data.
1030 * @return an image which gets its pixel data from
1031 * the specified URL.
1032 * @throws SecurityException if a security manager exists and its
1033 * checkPermission method doesn't allow
1034 * the operation.
1035 * @see #getImage(java.net.URL)
1036 */
1037 public abstract Image createImage(URL url);
1038
1039 /**
1040 * Prepares an image for rendering.
1041 * <p>
1042 * If the values of the width and height arguments are both
1043 * <code>-1</code>, this method prepares the image for rendering
1044 * on the default screen; otherwise, this method prepares an image
1045 * for rendering on the default screen at the specified width and height.
1046 * <p>
1047 * The image data is downloaded asynchronously in another thread,
1048 * and an appropriately scaled screen representation of the image is
1049 * generated.
1050 * <p>
1051 * This method is called by components <code>prepareImage</code>
1052 * methods.
1053 * <p>
1054 * Information on the flags returned by this method can be found
1055 * with the definition of the <code>ImageObserver</code> interface.
1056
1057 * @param image the image for which to prepare a
1058 * screen representation.
1059 * @param width the width of the desired screen
1060 * representation, or <code>-1</code>.
1061 * @param height the height of the desired screen
1062 * representation, or <code>-1</code>.
1063 * @param observer the <code>ImageObserver</code>
1064 * object to be notified as the
1065 * image is being prepared.
1066 * @return <code>true</code> if the image has already been
1067 * fully prepared; <code>false</code> otherwise.
1068 * @see java.awt.Component#prepareImage(java.awt.Image,
1069 * java.awt.image.ImageObserver)
1070 * @see java.awt.Component#prepareImage(java.awt.Image,
1071 * int, int, java.awt.image.ImageObserver)
1072 * @see java.awt.image.ImageObserver
1073 */
1074 public abstract boolean prepareImage(Image image, int width,
1075 int height, ImageObserver observer);
1076
1077 /**
1078 * Indicates the construction status of a specified image that is
1079 * being prepared for display.
1080 * <p>
1081 * If the values of the width and height arguments are both
1082 * <code>-1</code>, this method returns the construction status of
1083 * a screen representation of the specified image in this toolkit.
1084 * Otherwise, this method returns the construction status of a
1085 * scaled representation of the image at the specified width
1086 * and height.
1087 * <p>
1088 * This method does not cause the image to begin loading.
1089 * An application must call <code>prepareImage</code> to force
1090 * the loading of an image.
1091 * <p>
1092 * This method is called by the component's <code>checkImage</code>
1093 * methods.
1094 * <p>
1095 * Information on the flags returned by this method can be found
1096 * with the definition of the <code>ImageObserver</code> interface.
1097 * @param image the image whose status is being checked.
1098 * @param width the width of the scaled version whose status is
1099 * being checked, or <code>-1</code>.
1100 * @param height the height of the scaled version whose status
1101 * is being checked, or <code>-1</code>.
1102 * @param observer the <code>ImageObserver</code> object to be
1103 * notified as the image is being prepared.
1104 * @return the bitwise inclusive <strong>OR</strong> of the
1105 * <code>ImageObserver</code> flags for the
1106 * image data that is currently available.
1107 * @see java.awt.Toolkit#prepareImage(java.awt.Image,
1108 * int, int, java.awt.image.ImageObserver)
1109 * @see java.awt.Component#checkImage(java.awt.Image,
1110 * java.awt.image.ImageObserver)
1111 * @see java.awt.Component#checkImage(java.awt.Image,
1112 * int, int, java.awt.image.ImageObserver)
1113 * @see java.awt.image.ImageObserver
1114 */
1115 public abstract int checkImage(Image image, int width, int height,
1116 ImageObserver observer);
1117
1118 /**
1119 * Creates an image with the specified image producer.
1120 * @param producer the image producer to be used.
1121 * @return an image with the specified image producer.
1122 * @see java.awt.Image
1123 * @see java.awt.image.ImageProducer
1124 * @see java.awt.Component#createImage(java.awt.image.ImageProducer)
1125 */
1126 public abstract Image createImage(ImageProducer producer);
1127
1128 /**
1129 * Creates an image which decodes the image stored in the specified
1130 * byte array.
1131 * <p>
1132 * The data must be in some image format, such as GIF or JPEG,
1133 * that is supported by this toolkit.
1134 * @param imagedata an array of bytes, representing
1135 * image data in a supported image format.
1136 * @return an image.
1137 * @since JDK1.1
1138 */
1139 public Image createImage(byte[] imagedata) {
1140 return createImage(imagedata, 0, imagedata.length);
1141 }
1142
1143 /**
1144 * Creates an image which decodes the image stored in the specified
1145 * byte array, and at the specified offset and length.
1146 * The data must be in some image format, such as GIF or JPEG,
1147 * that is supported by this toolkit.
1148 * @param imagedata an array of bytes, representing
1149 * image data in a supported image format.
1150 * @param imageoffset the offset of the beginning
1151 * of the data in the array.
1152 * @param imagelength the length of the data in the array.
1153 * @return an image.
1154 * @since JDK1.1
1155 */
1156 public abstract Image createImage(byte[] imagedata,
1157 int imageoffset, int imagelength);
1158
1159 /**
1160 * Gets a <code>PrintJob</code> object which is the result of initiating
1161 * a print operation on the toolkit's platform.
1162 * <p>
1163 * Each actual implementation of this method should first check if there
1164 * is a security manager installed. If there is, the method should call
1165 * the security manager's <code>checkPrintJobAccess</code> method to
1166 * ensure initiation of a print operation is allowed. If the default
1167 * implementation of <code>checkPrintJobAccess</code> is used (that is,
1168 * that method is not overriden), then this results in a call to the
1169 * security manager's <code>checkPermission</code> method with a <code>
1170 * RuntimePermission("queuePrintJob")</code> permission.
1171 *
1172 * @param frame the parent of the print dialog. May not be null.
1173 * @param jobtitle the title of the PrintJob. A null title is equivalent
1174 * to "".
1175 * @param props a Properties object containing zero or more properties.
1176 * Properties are not standardized and are not consistent across
1177 * implementations. Because of this, PrintJobs which require job
1178 * and page control should use the version of this function which
1179 * takes JobAttributes and PageAttributes objects. This object
1180 * may be updated to reflect the user's job choices on exit. May
1181 * be null.
1182 *
1183 * @return a <code>PrintJob</code> object, or <code>null</code> if the
1184 * user cancelled the print job.
1185 * @throws NullPointerException if frame is null. This exception is
1186 * always thrown when GraphicsEnvironment.isHeadless() returns
1187 * true.
1188 * @throws SecurityException if this thread is not allowed to initiate a
1189 * print job request
1190 * @see java.awt.GraphicsEnvironment#isHeadless
1191 * @see java.awt.PrintJob
1192 * @see java.lang.RuntimePermission
1193 * @since JDK1.1
1194 */
1195 public abstract PrintJob getPrintJob(Frame frame, String jobtitle,
1196 Properties props);
1197
1198 /**
1199 * Gets a <code>PrintJob</code> object which is the result of initiating
1200 * a print operation on the toolkit's platform.
1201 * <p>
1202 * Each actual implementation of this method should first check if there
1203 * is a security manager installed. If there is, the method should call
1204 * the security manager's <code>checkPrintJobAccess</code> method to
1205 * ensure initiation of a print operation is allowed. If the default
1206 * implementation of <code>checkPrintJobAccess</code> is used (that is,
1207 * that method is not overriden), then this results in a call to the
1208 * security manager's <code>checkPermission</code> method with a <code>
1209 * RuntimePermission("queuePrintJob")</code> permission.
1210 *
1211 * @param frame the parent of the print dialog. May be null if and only
1212 * if jobAttributes is not null and jobAttributes.getDialog()
1213 * returns JobAttributes.DialogType.NONE or
1214 * JobAttributes.DialogType.COMMON.
1215 * @param jobtitle the title of the PrintJob. A null title is equivalent
1216 * to "".
1217 * @param jobAttributes a set of job attributes which will control the
1218 * PrintJob. The attributes will be updated to reflect the user's
1219 * choices as outlined in the JobAttributes documentation. May be
1220 * null.
1221 * @param pageAttributes a set of page attributes which will control the
1222 * PrintJob. The attributes will be applied to every page in the
1223 * job. The attributes will be updated to reflect the user's
1224 * choices as outlined in the PageAttributes documentation. May be
1225 * null.
1226 *
1227 * @return a <code>PrintJob</code> object, or <code>null</code> if the
1228 * user cancelled the print job.
1229 * @throws NullPointerException if frame is null and either jobAttributes
1230 * is null or jobAttributes.getDialog() returns
1231 * JobAttributes.DialogType.NATIVE.
1232 * @throws IllegalArgumentException if pageAttributes specifies differing
1233 * cross feed and feed resolutions. Also if this thread has
1234 * access to the file system and jobAttributes specifies
1235 * print to file, and the specified destination file exists but
1236 * is a directory rather than a regular file, does not exist but
1237 * cannot be created, or cannot be opened for any other reason.
1238 * However in the case of print to file, if a dialog is also
1239 * requested to be displayed then the user will be given an
1240 * opportunity to select a file and proceed with printing.
1241 * The dialog will ensure that the selected output file
1242 * is valid before returning from this method.
1243 * <p>
1244 * This exception is always thrown when GraphicsEnvironment.isHeadless()
1245 * returns true.
1246 * @throws SecurityException if this thread is not allowed to initiate a
1247 * print job request, or if jobAttributes specifies print to file,
1248 * and this thread is not allowed to access the file system
1249 * @see java.awt.PrintJob
1250 * @see java.awt.GraphicsEnvironment#isHeadless
1251 * @see java.lang.RuntimePermission
1252 * @see java.awt.JobAttributes
1253 * @see java.awt.PageAttributes
1254 * @since 1.3
1255 */
1256 public PrintJob getPrintJob(Frame frame, String jobtitle,
1257 JobAttributes jobAttributes, PageAttributes pageAttributes) {
1258 // Override to add printing support with new job/page control classes
1259
1260 if (GraphicsEnvironment.isHeadless()) {
1261 throw new IllegalArgumentException();
1262 }
1263
1264 if (this != Toolkit.getDefaultToolkit()) {
1265 return Toolkit.getDefaultToolkit().getPrintJob(frame,
1266 jobtitle, jobAttributes, pageAttributes);
1267 } else {
1268 return getPrintJob(frame, jobtitle, null);
1269 }
1270 }
1271
1272 /**
1273 * Emits an audio beep.
1274 * @since JDK1.1
1275 */
1276 public abstract void beep();
1277
1278 /**
1279 * Gets the singleton instance of the system Clipboard which interfaces
1280 * with clipboard facilities provided by the native platform. This
1281 * clipboard enables data transfer between Java programs and native
1282 * applications which use native clipboard facilities.
1283 * <p>
1284 * In addition to any and all formats specified in the flavormap.properties
1285 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL
1286 * </code> Toolkit property, text returned by the system Clipboard's <code>
1287 * getTransferData()</code> method is available in the following flavors:
1288 * <ul>
1289 * <li>DataFlavor.stringFlavor</li>
1290 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li>
1291 * </ul>
1292 * As with <code>java.awt.datatransfer.StringSelection</code>, if the
1293 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an
1294 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of
1295 * the system Clipboard's <code>getTransferData()</code> method for <code>
1296 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is
1297 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor
1298 * </code>. Because of this, support for <code>
1299 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is
1300 * <b>deprecated</b>.
1301 * <p>
1302 * Each actual implementation of this method should first check if there
1303 * is a security manager installed. If there is, the method should call
1304 * the security manager's <code>checkSystemClipboardAccess</code> method
1305 * to ensure it's ok to to access the system clipboard. If the default
1306 * implementation of <code>checkSystemClipboardAccess</code> is used (that
1307 * is, that method is not overriden), then this results in a call to the
1308 * security manager's <code>checkPermission</code> method with an <code>
1309 * AWTPermission("accessClipboard")</code> permission.
1310 *
1311 * @return the system Clipboard
1312 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1313 * returns true
1314 * @see java.awt.GraphicsEnvironment#isHeadless
1315 * @see java.awt.datatransfer.Clipboard
1316 * @see java.awt.datatransfer.StringSelection
1317 * @see java.awt.datatransfer.DataFlavor#stringFlavor
1318 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor
1319 * @see java.io.Reader
1320 * @see java.awt.AWTPermission
1321 * @since JDK1.1
1322 */
1323 public abstract Clipboard getSystemClipboard()
1324 throws HeadlessException;
1325
1326 /**
1327 * Gets the singleton instance of the system selection as a
1328 * <code>Clipboard</code> object. This allows an application to read and
1329 * modify the current, system-wide selection.
1330 * <p>
1331 * An application is responsible for updating the system selection whenever
1332 * the user selects text, using either the mouse or the keyboard.
1333 * Typically, this is implemented by installing a
1334 * <code>FocusListener</code> on all <code>Component</code>s which support
1335 * text selection, and, between <code>FOCUS_GAINED</code> and
1336 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>,
1337 * updating the system selection <code>Clipboard</code> when the selection
1338 * changes inside the <code>Component</code>. Properly updating the system
1339 * selection ensures that a Java application will interact correctly with
1340 * native applications and other Java applications running simultaneously
1341 * on the system. Note that <code>java.awt.TextComponent</code> and
1342 * <code>javax.swing.text.JTextComponent</code> already adhere to this
1343 * policy. When using these classes, and their subclasses, developers need
1344 * not write any additional code.
1345 * <p>
1346 * Some platforms do not support a system selection <code>Clipboard</code>.
1347 * On those platforms, this method will return <code>null</code>. In such a
1348 * case, an application is absolved from its responsibility to update the
1349 * system selection <code>Clipboard</code> as described above.
1350 * <p>
1351 * Each actual implementation of this method should first check if there
1352 * is a <code>SecurityManager</code> installed. If there is, the method
1353 * should call the <code>SecurityManager</code>'s
1354 * <code>checkSystemClipboardAccess</code> method to ensure that client
1355 * code has access the system selection. If the default implementation of
1356 * <code>checkSystemClipboardAccess</code> is used (that is, if the method
1357 * is not overridden), then this results in a call to the
1358 * <code>SecurityManager</code>'s <code>checkPermission</code> method with
1359 * an <code>AWTPermission("accessClipboard")</code> permission.
1360 *
1361 * @return the system selection as a <code>Clipboard</code>, or
1362 * <code>null</code> if the native platform does not support a
1363 * system selection <code>Clipboard</code>
1364 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1365 * returns true
1366 *
1367 * @see java.awt.datatransfer.Clipboard
1368 * @see java.awt.event.FocusListener
1369 * @see java.awt.event.FocusEvent#FOCUS_GAINED
1370 * @see java.awt.event.FocusEvent#FOCUS_LOST
1371 * @see TextComponent
1372 * @see javax.swing.text.JTextComponent
1373 * @see AWTPermission
1374 * @see GraphicsEnvironment#isHeadless
1375 * @since 1.4
1376 */
1377 public Clipboard getSystemSelection() throws HeadlessException {
1378 if (this != Toolkit.getDefaultToolkit()) {
1379 return Toolkit.getDefaultToolkit().getSystemSelection();
1380 } else {
1381 GraphicsEnvironment.checkHeadless();
1382 return null;
1383 }
1384 }
1385
1386 /**
1387 * Determines which modifier key is the appropriate accelerator
1388 * key for menu shortcuts.
1389 * <p>
1390 * Menu shortcuts, which are embodied in the
1391 * <code>MenuShortcut</code> class, are handled by the
1392 * <code>MenuBar</code> class.
1393 * <p>
1394 * By default, this method returns <code>Event.CTRL_MASK</code>.
1395 * Toolkit implementations should override this method if the
1396 * <b>Control</b> key isn't the correct key for accelerators.
1397 * @return the modifier mask on the <code>Event</code> class
1398 * that is used for menu shortcuts on this toolkit.
1399 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1400 * returns true
1401 * @see java.awt.GraphicsEnvironment#isHeadless
1402 * @see java.awt.MenuBar
1403 * @see java.awt.MenuShortcut
1404 * @since JDK1.1
1405 */
1406 public int getMenuShortcutKeyMask() throws HeadlessException {
1407 return Event.CTRL_MASK;
1408 }
1409
1410 /**
1411 * Returns whether the given locking key on the keyboard is currently in
1412 * its "on" state.
1413 * Valid key codes are
1414 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
1415 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
1416 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
1417 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
1418 *
1419 * @exception java.lang.IllegalArgumentException if <code>keyCode</code>
1420 * is not one of the valid key codes
1421 * @exception java.lang.UnsupportedOperationException if the host system doesn't
1422 * allow getting the state of this key programmatically, or if the keyboard
1423 * doesn't have this key
1424 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1425 * returns true
1426 * @see java.awt.GraphicsEnvironment#isHeadless
1427 * @since 1.3
1428 */
1429 public boolean getLockingKeyState(int keyCode)
1430 throws UnsupportedOperationException {
1431 if (!(keyCode == KeyEvent.VK_CAPS_LOCK
1432 || keyCode == KeyEvent.VK_NUM_LOCK
1433 || keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
1434 throw new IllegalArgumentException(
1435 "invalid key for Toolkit.getLockingKeyState");
1436 }
1437 throw new UnsupportedOperationException(
1438 "Toolkit.getLockingKeyState");
1439 }
1440
1441 /**
1442 * Sets the state of the given locking key on the keyboard.
1443 * Valid key codes are
1444 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
1445 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
1446 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
1447 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
1448 * <p>
1449 * Depending on the platform, setting the state of a locking key may
1450 * involve event processing and therefore may not be immediately
1451 * observable through getLockingKeyState.
1452 *
1453 * @exception java.lang.IllegalArgumentException if <code>keyCode</code>
1454 * is not one of the valid key codes
1455 * @exception java.lang.UnsupportedOperationException if the host system doesn't
1456 * allow setting the state of this key programmatically, or if the keyboard
1457 * doesn't have this key
1458 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1459 * returns true
1460 * @see java.awt.GraphicsEnvironment#isHeadless
1461 * @since 1.3
1462 */
1463 public void setLockingKeyState(int keyCode, boolean on)
1464 throws UnsupportedOperationException {
1465 if (!(keyCode == KeyEvent.VK_CAPS_LOCK
1466 || keyCode == KeyEvent.VK_NUM_LOCK
1467 || keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
1468 throw new IllegalArgumentException(
1469 "invalid key for Toolkit.setLockingKeyState");
1470 }
1471 throw new UnsupportedOperationException(
1472 "Toolkit.setLockingKeyState");
1473 }
1474
1475 /**
1476 * Give native peers the ability to query the native container
1477 * given a native component (eg the direct parent may be lightweight).
1478 */
1479 protected static Container getNativeContainer(Component c) {
1480 return c.getNativeContainer();
1481 }
1482
1483 /**
1484 * Creates a new custom cursor object.
1485 * If the image to display is invalid, the cursor will be hidden (made
1486 * completely transparent), and the hotspot will be set to (0, 0).
1487 *
1488 * <p>Note that multi-frame images are invalid and may cause this
1489 * method to hang.
1490 *
1491 * @param cursor the image to display when the cursor is actived
1492 * @param hotSpot the X and Y of the large cursor's hot spot; the
1493 * hotSpot values must be less than the Dimension returned by
1494 * <code>getBestCursorSize</code>
1495 * @param name a localized description of the cursor, for Java Accessibility use
1496 * @exception IndexOutOfBoundsException if the hotSpot values are outside
1497 * the bounds of the cursor
1498 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1499 * returns true
1500 * @see java.awt.GraphicsEnvironment#isHeadless
1501 * @since 1.2
1502 */
1503 public Cursor createCustomCursor(Image cursor, Point hotSpot,
1504 String name) throws IndexOutOfBoundsException,
1505 HeadlessException {
1506 // Override to implement custom cursor support.
1507 if (this != Toolkit.getDefaultToolkit()) {
1508 return Toolkit.getDefaultToolkit().createCustomCursor(
1509 cursor, hotSpot, name);
1510 } else {
1511 return new Cursor(Cursor.DEFAULT_CURSOR);
1512 }
1513 }
1514
1515 /**
1516 * Returns the supported cursor dimension which is closest to the desired
1517 * sizes. Systems which only support a single cursor size will return that
1518 * size regardless of the desired sizes. Systems which don't support custom
1519 * cursors will return a dimension of 0, 0. <p>
1520 * Note: if an image is used whose dimensions don't match a supported size
1521 * (as returned by this method), the Toolkit implementation will attempt to
1522 * resize the image to a supported size.
1523 * Since converting low-resolution images is difficult,
1524 * no guarantees are made as to the quality of a cursor image which isn't a
1525 * supported size. It is therefore recommended that this method
1526 * be called and an appropriate image used so no image conversion is made.
1527 *
1528 * @param preferredWidth the preferred cursor width the component would like
1529 * to use.
1530 * @param preferredHeight the preferred cursor height the component would like
1531 * to use.
1532 * @return the closest matching supported cursor size, or a dimension of 0,0 if
1533 * the Toolkit implementation doesn't support custom cursors.
1534 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1535 * returns true
1536 * @see java.awt.GraphicsEnvironment#isHeadless
1537 * @since 1.2
1538 */
1539 public Dimension getBestCursorSize(int preferredWidth,
1540 int preferredHeight) throws HeadlessException {
1541 // Override to implement custom cursor support.
1542 if (this != Toolkit.getDefaultToolkit()) {
1543 return Toolkit.getDefaultToolkit().getBestCursorSize(
1544 preferredWidth, preferredHeight);
1545 } else {
1546 return new Dimension(0, 0);
1547 }
1548 }
1549
1550 /**
1551 * Returns the maximum number of colors the Toolkit supports in a custom cursor
1552 * palette.<p>
1553 * Note: if an image is used which has more colors in its palette than
1554 * the supported maximum, the Toolkit implementation will attempt to flatten the
1555 * palette to the maximum. Since converting low-resolution images is difficult,
1556 * no guarantees are made as to the quality of a cursor image which has more
1557 * colors than the system supports. It is therefore recommended that this method
1558 * be called and an appropriate image used so no image conversion is made.
1559 *
1560 * @return the maximum number of colors, or zero if custom cursors are not
1561 * supported by this Toolkit implementation.
1562 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1563 * returns true
1564 * @see java.awt.GraphicsEnvironment#isHeadless
1565 * @since 1.2
1566 */
1567 public int getMaximumCursorColors() throws HeadlessException {
1568 // Override to implement custom cursor support.
1569 if (this != Toolkit.getDefaultToolkit()) {
1570 return Toolkit.getDefaultToolkit().getMaximumCursorColors();
1571 } else {
1572 return 0;
1573 }
1574 }
1575
1576 /**
1577 * Returns whether Toolkit supports this state for
1578 * <code>Frame</code>s. This method tells whether the <em>UI
1579 * concept</em> of, say, maximization or iconification is
1580 * supported. It will always return false for "compound" states
1581 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>.
1582 * In other words, the rule of thumb is that only queries with a
1583 * single frame state constant as an argument are meaningful.
1584 *
1585 * @param state one of named frame state constants.
1586 * @return <code>true</code> is this frame state is supported by
1587 * this Toolkit implementation, <code>false</code> otherwise.
1588 * @exception HeadlessException
1589 * if <code>GraphicsEnvironment.isHeadless()</code>
1590 * returns <code>true</code>.
1591 * @see java.awt.Frame#setExtendedState
1592 * @since 1.4
1593 */
1594 public boolean isFrameStateSupported(int state)
1595 throws HeadlessException {
1596 if (GraphicsEnvironment.isHeadless()) {
1597 throw new HeadlessException();
1598 }
1599 if (this != Toolkit.getDefaultToolkit()) {
1600 return Toolkit.getDefaultToolkit().isFrameStateSupported(
1601 state);
1602 } else {
1603 return (state == Frame.NORMAL); // others are not guaranteed
1604 }
1605 }
1606
1607 /**
1608 * Support for I18N: any visible strings should be stored in
1609 * sun.awt.resources.awt.properties. The ResourceBundle is stored
1610 * here, so that only one copy is maintained.
1611 */
1612 private static ResourceBundle resources;
1613
1614 /**
1615 * Initialize JNI field and method ids
1616 */
1617 private static native void initIDs();
1618
1619 /**
1620 * WARNING: This is a temporary workaround for a problem in the
1621 * way the AWT loads native libraries. A number of classes in the
1622 * AWT package have a native method, initIDs(), which initializes
1623 * the JNI field and method ids used in the native portion of
1624 * their implementation.
1625 *
1626 * Since the use and storage of these ids is done by the
1627 * implementation libraries, the implementation of these method is
1628 * provided by the particular AWT implementations (for example,
1629 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The
1630 * problem is that this means that the native libraries must be
1631 * loaded by the java.* classes, which do not necessarily know the
1632 * names of the libraries to load. A better way of doing this
1633 * would be to provide a separate library which defines java.awt.*
1634 * initIDs, and exports the relevant symbols out to the
1635 * implementation libraries.
1636 *
1637 * For now, we know it's done by the implementation, and we assume
1638 * that the name of the library is "awt". -br.
1639 *
1640 * If you change loadLibraries(), please add the change to
1641 * java.awt.image.ColorModel.loadLibraries(). Unfortunately,
1642 * classes can be loaded in java.awt.image that depend on
1643 * libawt and there is no way to call Toolkit.loadLibraries()
1644 * directly. -hung
1645 */
1646 private static boolean loaded = false;
1647
1648 static void loadLibraries() {
1649 if (!loaded) {
1650 java.security.AccessController
1651 .doPrivileged(new sun.security.action.LoadLibraryAction(
1652 "awt"));
1653 loaded = true;
1654 }
1655 }
1656
1657 static {
1658 java.security.AccessController
1659 .doPrivileged(new java.security.PrivilegedAction() {
1660 public Object run() {
1661 try {
1662 resources = ResourceBundle.getBundle(
1663 "sun.awt.resources.awt",
1664 CoreResourceBundleControl
1665 .getRBControlInstance());
1666 } catch (MissingResourceException e) {
1667 // No resource file; defaults will be used.
1668 }
1669 return null;
1670 }
1671 });
1672
1673 // ensure that the proper libraries are loaded
1674 loadLibraries();
1675 initAssistiveTechnologies();
1676 if (!GraphicsEnvironment.isHeadless()) {
1677 initIDs();
1678 }
1679 }
1680
1681 /**
1682 * Gets a property with the specified key and default.
1683 * This method returns defaultValue if the property is not found.
1684 */
1685 public static String getProperty(String key, String defaultValue) {
1686 if (resources != null) {
1687 try {
1688 return resources.getString(key);
1689 } catch (MissingResourceException e) {
1690 }
1691 }
1692
1693 return defaultValue;
1694 }
1695
1696 /**
1697 * Get the application's or applet's EventQueue instance.
1698 * Depending on the Toolkit implementation, different EventQueues
1699 * may be returned for different applets. Applets should
1700 * therefore not assume that the EventQueue instance returned
1701 * by this method will be shared by other applets or the system.
1702 *
1703 * <p>First, if there is a security manager, its
1704 * <code>checkAwtEventQueueAccess</code>
1705 * method is called.
1706 * If the default implementation of <code>checkAwtEventQueueAccess</code>
1707 * is used (that is, that method is not overriden), then this results in
1708 * a call to the security manager's <code>checkPermission</code> method
1709 * with an <code>AWTPermission("accessEventQueue")</code> permission.
1710 *
1711 * @return the <code>EventQueue</code> object
1712 * @throws SecurityException
1713 * if a security manager exists and its <code>{@link
1714 * java.lang.SecurityManager#checkAwtEventQueueAccess}</code>
1715 * method denies access to the <code>EventQueue</code>
1716 * @see java.awt.AWTPermission
1717 */
1718 public final EventQueue getSystemEventQueue() {
1719 SecurityManager security = System.getSecurityManager();
1720 if (security != null) {
1721 security.checkAwtEventQueueAccess();
1722 }
1723 return getSystemEventQueueImpl();
1724 }
1725
1726 /**
1727 * Gets the application's or applet's <code>EventQueue</code>
1728 * instance, without checking access. For security reasons,
1729 * this can only be called from a <code>Toolkit</code> subclass.
1730 * @return the <code>EventQueue</code> object
1731 */
1732 protected abstract EventQueue getSystemEventQueueImpl();
1733
1734 /* Accessor method for use by AWT package routines. */
1735 static EventQueue getEventQueue() {
1736 return getDefaultToolkit().getSystemEventQueueImpl();
1737 }
1738
1739 /**
1740 * Creates the peer for a DragSourceContext.
1741 * Always throws InvalidDndOperationException if
1742 * GraphicsEnvironment.isHeadless() returns true.
1743 * @see java.awt.GraphicsEnvironment#isHeadless
1744 */
1745 public abstract DragSourceContextPeer createDragSourceContextPeer(
1746 DragGestureEvent dge) throws InvalidDnDOperationException;
1747
1748 /**
1749 * Creates a concrete, platform dependent, subclass of the abstract
1750 * DragGestureRecognizer class requested, and associates it with the
1751 * DragSource, Component and DragGestureListener specified.
1752 *
1753 * subclasses should override this to provide their own implementation
1754 *
1755 * @param abstractRecognizerClass The abstract class of the required recognizer
1756 * @param ds The DragSource
1757 * @param c The Component target for the DragGestureRecognizer
1758 * @param srcActions The actions permitted for the gesture
1759 * @param dgl The DragGestureListener
1760 *
1761 * @return the new object or null. Always returns null if
1762 * GraphicsEnvironment.isHeadless() returns true.
1763 * @see java.awt.GraphicsEnvironment#isHeadless
1764 */
1765 public <T extends DragGestureRecognizer> T createDragGestureRecognizer(
1766 Class<T> abstractRecognizerClass, DragSource ds,
1767 Component c, int srcActions, DragGestureListener dgl) {
1768 return null;
1769 }
1770
1771 /**
1772 * Obtains a value for the specified desktop property.
1773 *
1774 * A desktop property is a uniquely named value for a resource that
1775 * is Toolkit global in nature. Usually it also is an abstract
1776 * representation for an underlying platform dependent desktop setting.
1777 * For more information on desktop properties supported by the AWT see
1778 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>.
1779 */
1780 public final synchronized Object getDesktopProperty(
1781 String propertyName) {
1782 // This is a workaround for headless toolkits. It would be
1783 // better to override this method but it is declared final.
1784 // "this instanceof" syntax defeats polymorphism.
1785 // --mm, 03/03/00
1786 if (this instanceof HeadlessToolkit) {
1787 return ((HeadlessToolkit) this ).getUnderlyingToolkit()
1788 .getDesktopProperty(propertyName);
1789 }
1790
1791 if (desktopProperties.isEmpty()) {
1792 initializeDesktopProperties();
1793 }
1794
1795 Object value;
1796
1797 // This property should never be cached
1798 if (propertyName.equals("awt.dynamicLayoutSupported")) {
1799 value = lazilyLoadDesktopProperty(propertyName);
1800 return value;
1801 }
1802
1803 value = desktopProperties.get(propertyName);
1804
1805 if (value == null) {
1806 value = lazilyLoadDesktopProperty(propertyName);
1807
1808 if (value != null) {
1809 setDesktopProperty(propertyName, value);
1810 }
1811 }
1812
1813 /* for property "awt.font.desktophints" */
1814 if (value instanceof RenderingHints) {
1815 value = ((RenderingHints) value).clone();
1816 }
1817
1818 return value;
1819 }
1820
1821 /**
1822 * Sets the named desktop property to the specified value and fires a
1823 * property change event to notify any listeners that the value has changed.
1824 */
1825 protected final void setDesktopProperty(String name, Object newValue) {
1826 // This is a workaround for headless toolkits. It would be
1827 // better to override this method but it is declared final.
1828 // "this instanceof" syntax defeats polymorphism.
1829 // --mm, 03/03/00
1830 if (this instanceof HeadlessToolkit) {
1831 ((HeadlessToolkit) this ).getUnderlyingToolkit()
1832 .setDesktopProperty(name, newValue);
1833 return;
1834 }
1835 Object oldValue;
1836
1837 synchronized (this ) {
1838 oldValue = desktopProperties.get(name);
1839 desktopProperties.put(name, newValue);
1840 }
1841
1842 desktopPropsSupport
1843 .firePropertyChange(name, oldValue, newValue);
1844 }
1845
1846 /**
1847 * an opportunity to lazily evaluate desktop property values.
1848 */
1849 protected Object lazilyLoadDesktopProperty(String name) {
1850 return null;
1851 }
1852
1853 /**
1854 * initializeDesktopProperties
1855 */
1856 protected void initializeDesktopProperties() {
1857 }
1858
1859 /**
1860 * Adds the specified property change listener for the named desktop
1861 * property.
1862 * If pcl is null, no exception is thrown and no action is performed.
1863 *
1864 * @param name The name of the property to listen for
1865 * @param pcl The property change listener
1866 * @since 1.2
1867 */
1868 public void addPropertyChangeListener(String name,
1869 PropertyChangeListener pcl) {
1870 desktopPropsSupport.addPropertyChangeListener(name, pcl);
1871 }
1872
1873 /**
1874 * Removes the specified property change listener for the named
1875 * desktop property.
1876 * If pcl is null, no exception is thrown and no action is performed.
1877 *
1878 * @param name The name of the property to remove
1879 * @param pcl The property change listener
1880 * @since 1.2
1881 */
1882 public void removePropertyChangeListener(String name,
1883 PropertyChangeListener pcl) {
1884 desktopPropsSupport.removePropertyChangeListener(name, pcl);
1885 }
1886
1887 /**
1888 * Returns an array of all the property change listeners
1889 * registered on this toolkit.
1890 *
1891 * @return all of this toolkit's <code>PropertyChangeListener</code>s
1892 * or an empty array if no property change
1893 * listeners are currently registered
1894 *
1895 * @since 1.4
1896 */
1897 public PropertyChangeListener[] getPropertyChangeListeners() {
1898 return desktopPropsSupport.getPropertyChangeListeners();
1899 }
1900
1901 /**
1902 * Returns an array of all the <code>PropertyChangeListener</code>s
1903 * associated with the named property.
1904 *
1905 * @param propertyName the named property
1906 * @return all of the <code>PropertyChangeListener</code>s associated with
1907 * the named property or an empty array if no such listeners have
1908 * been added
1909 * @since 1.4
1910 */
1911 public PropertyChangeListener[] getPropertyChangeListeners(
1912 String propertyName) {
1913 return desktopPropsSupport
1914 .getPropertyChangeListeners(propertyName);
1915 }
1916
1917 protected final Map<String, Object> desktopProperties = new HashMap<String, Object>();
1918 protected final PropertyChangeSupport desktopPropsSupport = Toolkit
1919 .createPropertyChangeSupport(this );
1920
1921 /**
1922 * Returns whether the always-on-top mode is supported by this toolkit.
1923 * To detect whether the always-on-top mode is supported for a
1924 * particular Window, use {@link Window#isAlwaysOnTopSupported}.
1925 * @return <code>true</code>, if current toolkit supports the always-on-top mode,
1926 * otherwise returns <code>false</code>
1927 * @see Window#isAlwaysOnTopSupported
1928 * @see Window#setAlwaysOnTop(boolean)
1929 * @since 1.6
1930 */
1931 public boolean isAlwaysOnTopSupported() {
1932 return true;
1933 }
1934
1935 /**
1936 * Returns whether the given modality type is supported by this toolkit. If
1937 * a dialog with unsupported modality type is created, then
1938 * <code>Dialog.ModalityType.MODELESS</code> is used instead.
1939 *
1940 * @param modalityType modality type to be checked for support by this toolkit
1941 *
1942 * @return <code>true</code>, if current toolkit supports given modality
1943 * type, <code>false</code> otherwise
1944 *
1945 * @see java.awt.Dialog.ModalityType
1946 * @see java.awt.Dialog#getModalityType
1947 * @see java.awt.Dialog#setModalityType
1948 *
1949 * @since 1.6
1950 */
1951 public abstract boolean isModalityTypeSupported(
1952 Dialog.ModalityType modalityType);
1953
1954 /**
1955 * Returns whether the given modal exclusion type is supported by this
1956 * toolkit. If an unsupported modal exclusion type property is set on a window,
1957 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead.
1958 *
1959 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit
1960 *
1961 * @return <code>true</code>, if current toolkit supports given modal exclusion
1962 * type, <code>false</code> otherwise
1963 *
1964 * @see java.awt.Dialog.ModalExclusionType
1965 * @see java.awt.Window#getModalExclusionType
1966 * @see java.awt.Window#setModalExclusionType
1967 *
1968 * @since 1.6
1969 */
1970 public abstract boolean isModalExclusionTypeSupported(
1971 Dialog.ModalExclusionType modalExclusionType);
1972
1973 private static final DebugHelper dbg = DebugHelper
1974 .create(Toolkit.class);
1975 private static final int LONG_BITS = 64;
1976 private int[] calls = new int[LONG_BITS];
1977 private static volatile long enabledOnToolkitMask;
1978 private AWTEventListener eventListener = null;
1979 private WeakHashMap listener2SelectiveListener = new WeakHashMap();
1980
1981 /*
1982 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy,
1983 * if the listener is proxied.
1984 */
1985 static private AWTEventListener deProxyAWTEventListener(
1986 AWTEventListener l) {
1987 AWTEventListener localL = l;
1988
1989 if (localL == null) {
1990 return null;
1991 }
1992 // if user passed in a AWTEventListenerProxy object, extract
1993 // the listener
1994 if (l instanceof AWTEventListenerProxy) {
1995 localL = (AWTEventListener) ((AWTEventListenerProxy) l)
1996 .getListener();
1997 }
1998 return localL;
1999 }
2000
2001 /**
2002 * Adds an AWTEventListener to receive all AWTEvents dispatched
2003 * system-wide that conform to the given <code>eventMask</code>.
2004 * <p>
2005 * First, if there is a security manager, its <code>checkPermission</code>
2006 * method is called with an
2007 * <code>AWTPermission("listenToAllAWTEvents")</code> permission.
2008 * This may result in a SecurityException.
2009 * <p>
2010 * <code>eventMask</code> is a bitmask of event types to receive.
2011 * It is constructed by bitwise OR-ing together the event masks
2012 * defined in <code>AWTEvent</code>.
2013 * <p>
2014 * Note: event listener use is not recommended for normal
2015 * application use, but are intended solely to support special
2016 * purpose facilities including support for accessibility,
2017 * event record/playback, and diagnostic tracing.
2018 *
2019 * If listener is null, no exception is thrown and no action is performed.
2020 *
2021 * @param listener the event listener.
2022 * @param eventMask the bitmask of event types to receive
2023 * @throws SecurityException
2024 * if a security manager exists and its
2025 * <code>checkPermission</code> method doesn't allow the operation.
2026 * @see #removeAWTEventListener
2027 * @see #getAWTEventListeners
2028 * @see SecurityManager#checkPermission
2029 * @see java.awt.AWTEvent
2030 * @see java.awt.AWTPermission
2031 * @see java.awt.event.AWTEventListener
2032 * @see java.awt.event.AWTEventListenerProxy
2033 * @since 1.2
2034 */
2035 public void addAWTEventListener(AWTEventListener listener,
2036 long eventMask) {
2037 AWTEventListener localL = deProxyAWTEventListener(listener);
2038
2039 if (localL == null) {
2040 return;
2041 }
2042 SecurityManager security = System.getSecurityManager();
2043 if (security != null) {
2044 security
2045 .checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
2046 }
2047 synchronized (this ) {
2048 SelectiveAWTEventListener selectiveListener = (SelectiveAWTEventListener) listener2SelectiveListener
2049 .get(localL);
2050
2051 if (selectiveListener == null) {
2052 // Create a new selectiveListener.
2053 selectiveListener = new SelectiveAWTEventListener(
2054 localL, eventMask);
2055 listener2SelectiveListener.put(localL,
2056 selectiveListener);
2057 eventListener = ToolkitEventMulticaster.add(
2058 eventListener, selectiveListener);
2059 }
2060 // OR the eventMask into the selectiveListener's event mask.
2061 selectiveListener.orEventMasks(eventMask);
2062
2063 enabledOnToolkitMask |= eventMask;
2064
2065 long mask = eventMask;
2066 for (int i = 0; i < LONG_BITS; i++) {
2067 // If no bits are set, break out of loop.
2068 if (mask == 0) {
2069 break;
2070 }
2071 if ((mask & 1L) != 0) { // Always test bit 0.
2072 calls[i]++;
2073 }
2074 mask >>>= 1; // Right shift, fill with zeros on left.
2075 }
2076 }
2077 }
2078
2079 /**
2080 * Removes an AWTEventListener from receiving dispatched AWTEvents.
2081 * <p>
2082 * First, if there is a security manager, its <code>checkPermission</code>
2083 * method is called with an
2084 * <code>AWTPermission("listenToAllAWTEvents")</code> permission.
2085 * This may result in a SecurityException.
2086 * <p>
2087 * Note: event listener use is not recommended for normal
2088 * application use, but are intended solely to support special
2089 * purpose facilities including support for accessibility,
2090 * event record/playback, and diagnostic tracing.
2091 *
2092 * If listener is null, no exception is thrown and no action is performed.
2093 *
2094 * @param listener the event listener.
2095 * @throws SecurityException
2096 * if a security manager exists and its
2097 * <code>checkPermission</code> method doesn't allow the operation.
2098 * @see #addAWTEventListener
2099 * @see #getAWTEventListeners
2100 * @see SecurityManager#checkPermission
2101 * @see java.awt.AWTEvent
2102 * @see java.awt.AWTPermission
2103 * @see java.awt.event.AWTEventListener
2104 * @see java.awt.event.AWTEventListenerProxy
2105 * @since 1.2
2106 */
2107 public void removeAWTEventListener(AWTEventListener listener) {
2108 AWTEventListener localL = deProxyAWTEventListener(listener);
2109
2110 if (listener == null) {
2111 return;
2112 }
2113 SecurityManager security = System.getSecurityManager();
2114 if (security != null) {
2115 security
2116 .checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
2117 }
2118
2119 synchronized (this ) {
2120 SelectiveAWTEventListener selectiveListener = (SelectiveAWTEventListener) listener2SelectiveListener
2121 .get(localL);
2122
2123 if (selectiveListener != null) {
2124 listener2SelectiveListener.remove(localL);
2125 int[] listenerCalls = selectiveListener.getCalls();
2126 for (int i = 0; i < LONG_BITS; i++) {
2127 calls[i] -= listenerCalls[i];
2128 assert calls[i] >= 0 : "Negative Listeners count";
2129
2130 if (calls[i] == 0) {
2131 enabledOnToolkitMask &= ~(1L << i);
2132 }
2133 }
2134 }
2135 eventListener = ToolkitEventMulticaster.remove(
2136 eventListener, (selectiveListener == null) ? localL
2137 : selectiveListener);
2138 }
2139 }
2140
2141 static boolean enabledOnToolkit(long eventMask) {
2142 return (enabledOnToolkitMask & eventMask) != 0;
2143 }
2144
2145 synchronized int countAWTEventListeners(long eventMask) {
2146 if (dbg.on) {
2147 dbg.assertion(eventMask != 0);
2148 }
2149
2150 int ci = 0;
2151 for (; eventMask != 0; eventMask >>>= 1, ci++) {
2152 }
2153 ci--;
2154 return calls[ci];
2155 }
2156
2157 /**
2158 * Returns an array of all the <code>AWTEventListener</code>s
2159 * registered on this toolkit.
2160 * If there is a security manager, its {@code checkPermission}
2161 * method is called with an
2162 * {@code AWTPermission("listenToAllAWTEvents")} permission.
2163 * This may result in a SecurityException.
2164 * Listeners can be returned
2165 * within <code>AWTEventListenerProxy</code> objects, which also contain
2166 * the event mask for the given listener.
2167 * Note that listener objects
2168 * added multiple times appear only once in the returned array.
2169 *
2170 * @return all of the <code>AWTEventListener</code>s or an empty
2171 * array if no listeners are currently registered
2172 * @throws SecurityException
2173 * if a security manager exists and its
2174 * <code>checkPermission</code> method doesn't allow the operation.
2175 * @see #addAWTEventListener
2176 * @see #removeAWTEventListener
2177 * @see SecurityManager#checkPermission
2178 * @see java.awt.AWTEvent
2179 * @see java.awt.AWTPermission
2180 * @see java.awt.event.AWTEventListener
2181 * @see java.awt.event.AWTEventListenerProxy
2182 * @since 1.4
2183 */
2184 public AWTEventListener[] getAWTEventListeners() {
2185 SecurityManager security = System.getSecurityManager();
2186 if (security != null) {
2187 security
2188 .checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
2189 }
2190 synchronized (this ) {
2191 EventListener[] la = ToolkitEventMulticaster.getListeners(
2192 eventListener, AWTEventListener.class);
2193
2194 AWTEventListener[] ret = new AWTEventListener[la.length];
2195 for (int i = 0; i < la.length; i++) {
2196 SelectiveAWTEventListener sael = (SelectiveAWTEventListener) la[i];
2197 AWTEventListener tempL = sael.getListener();
2198 //assert tempL is not an AWTEventListenerProxy - we should
2199 // have weeded them all out
2200 // don't want to wrap a proxy inside a proxy
2201 ret[i] = new AWTEventListenerProxy(sael.getEventMask(),
2202 tempL);
2203 }
2204 return ret;
2205 }
2206 }
2207
2208 /**
2209 * Returns an array of all the <code>AWTEventListener</code>s
2210 * registered on this toolkit which listen to all of the event
2211 * types specified in the {@code eventMask} argument.
2212 * If there is a security manager, its {@code checkPermission}
2213 * method is called with an
2214 * {@code AWTPermission("listenToAllAWTEvents")} permission.
2215 * This may result in a SecurityException.
2216 * Listeners can be returned
2217 * within <code>AWTEventListenerProxy</code> objects, which also contain
2218 * the event mask for the given listener.
2219 * Note that listener objects
2220 * added multiple times appear only once in the returned array.
2221 *
2222 * @param eventMask the bitmask of event types to listen for
2223 * @return all of the <code>AWTEventListener</code>s registered
2224 * on this toolkit for the specified
2225 * event types, or an empty array if no such listeners
2226 * are currently registered
2227 * @throws SecurityException
2228 * if a security manager exists and its
2229 * <code>checkPermission</code> method doesn't allow the operation.
2230 * @see #addAWTEventListener
2231 * @see #removeAWTEventListener
2232 * @see SecurityManager#checkPermission
2233 * @see java.awt.AWTEvent
2234 * @see java.awt.AWTPermission
2235 * @see java.awt.event.AWTEventListener
2236 * @see java.awt.event.AWTEventListenerProxy
2237 * @since 1.4
2238 */
2239 public AWTEventListener[] getAWTEventListeners(long eventMask) {
2240 SecurityManager security = System.getSecurityManager();
2241 if (security != null) {
2242 security
2243 .checkPermission(SecurityConstants.ALL_AWT_EVENTS_PERMISSION);
2244 }
2245 synchronized (this ) {
2246 EventListener[] la = ToolkitEventMulticaster.getListeners(
2247 eventListener, AWTEventListener.class);
2248
2249 java.util.List list = new ArrayList(la.length);
2250
2251 for (int i = 0; i < la.length; i++) {
2252 SelectiveAWTEventListener sael = (SelectiveAWTEventListener) la[i];
2253 if ((sael.getEventMask() & eventMask) == eventMask) {
2254 //AWTEventListener tempL = sael.getListener();
2255 list.add(new AWTEventListenerProxy(sael
2256 .getEventMask(), sael.getListener()));
2257 }
2258 }
2259 return (AWTEventListener[]) list
2260 .toArray(new AWTEventListener[0]);
2261 }
2262 }
2263
2264 /*
2265 * This method notifies any AWTEventListeners that an event
2266 * is about to be dispatched.
2267 *
2268 * @param theEvent the event which will be dispatched.
2269 */
2270 void notifyAWTEventListeners(AWTEvent theEvent) {
2271 // This is a workaround for headless toolkits. It would be
2272 // better to override this method but it is declared package private.
2273 // "this instanceof" syntax defeats polymorphism.
2274 // --mm, 03/03/00
2275 if (this instanceof HeadlessToolkit) {
2276 ((HeadlessToolkit) this ).getUnderlyingToolkit()
2277 .notifyAWTEventListeners(theEvent);
2278 return;
2279 }
2280
2281 AWTEventListener eventListener = this .eventListener;
2282 if (eventListener != null) {
2283 eventListener.eventDispatched(theEvent);
2284 }
2285 }
2286
2287 static private class ToolkitEventMulticaster extends
2288 AWTEventMulticaster implements AWTEventListener {
2289 // Implementation cloned from AWTEventMulticaster.
2290
2291 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) {
2292 super (a, b);
2293 }
2294
2295 static AWTEventListener add(AWTEventListener a,
2296 AWTEventListener b) {
2297 if (a == null)
2298 return b;
2299 if (b == null)
2300 return a;
2301 return new ToolkitEventMulticaster(a, b);
2302 }
2303
2304 static AWTEventListener remove(AWTEventListener l,
2305 AWTEventListener oldl) {
2306 return (AWTEventListener) removeInternal(l, oldl);
2307 }
2308
2309 // #4178589: must overload remove(EventListener) to call our add()
2310 // instead of the static addInternal() so we allocate a
2311 // ToolkitEventMulticaster instead of an AWTEventMulticaster.
2312 // Note: this method is called by AWTEventListener.removeInternal(),
2313 // so its method signature must match AWTEventListener.remove().
2314 protected EventListener remove(EventListener oldl) {
2315 if (oldl == a)
2316 return b;
2317 if (oldl == b)
2318 return a;
2319 AWTEventListener a2 = (AWTEventListener) removeInternal(a,
2320 oldl);
2321 AWTEventListener b2 = (AWTEventListener) removeInternal(b,
2322 oldl);
2323 if (a2 == a && b2 == b) {
2324 return this ; // it's not here
2325 }
2326 return add(a2, b2);
2327 }
2328
2329 public void eventDispatched(AWTEvent event) {
2330 ((AWTEventListener) a).eventDispatched(event);
2331 ((AWTEventListener) b).eventDispatched(event);
2332 }
2333 }
2334
2335 private class SelectiveAWTEventListener implements AWTEventListener {
2336 AWTEventListener listener;
2337 private long eventMask;
2338 // This array contains the number of times to call the eventlistener
2339 // for each event type.
2340 int[] calls = new int[Toolkit.LONG_BITS];
2341
2342 public AWTEventListener getListener() {
2343 return listener;
2344 }
2345
2346 public long getEventMask() {
2347 return eventMask;
2348 }
2349
2350 public int[] getCalls() {
2351 return calls;
2352 }
2353
2354 public void orEventMasks(long mask) {
2355 eventMask |= mask;
2356 // For each event bit set in mask, increment its call count.
2357 for (int i = 0; i < Toolkit.LONG_BITS; i++) {
2358 // If no bits are set, break out of loop.
2359 if (mask == 0) {
2360 break;
2361 }
2362 if ((mask & 1L) != 0) { // Always test bit 0.
2363 calls[i]++;
2364 }
2365 mask >>>= 1; // Right shift, fill with zeros on left.
2366 }
2367 }
2368
2369 SelectiveAWTEventListener(AWTEventListener l, long mask) {
2370 listener = l;
2371 eventMask = mask;
2372 }
2373
2374 public void eventDispatched(AWTEvent event) {
2375 long eventBit = 0; // Used to save the bit of the event type.
2376 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0
2377 && event.id >= ComponentEvent.COMPONENT_FIRST && event.id <= ComponentEvent.COMPONENT_LAST)
2378 || ((eventBit = eventMask
2379 & AWTEvent.CONTAINER_EVENT_MASK) != 0
2380 && event.id >= ContainerEvent.CONTAINER_FIRST && event.id <= ContainerEvent.CONTAINER_LAST)
2381 || ((eventBit = eventMask
2382 & AWTEvent.FOCUS_EVENT_MASK) != 0
2383 && event.id >= FocusEvent.FOCUS_FIRST && event.id <= FocusEvent.FOCUS_LAST)
2384 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0
2385 && event.id >= KeyEvent.KEY_FIRST && event.id <= KeyEvent.KEY_LAST)
2386 || ((eventBit = eventMask
2387 & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && event.id == MouseEvent.MOUSE_WHEEL)
2388 || ((eventBit = eventMask
2389 & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && (event.id == MouseEvent.MOUSE_MOVED || event.id == MouseEvent.MOUSE_DRAGGED))
2390 || ((eventBit = eventMask
2391 & AWTEvent.MOUSE_EVENT_MASK) != 0
2392 && event.id != MouseEvent.MOUSE_MOVED
2393 && event.id != MouseEvent.MOUSE_DRAGGED
2394 && event.id != MouseEvent.MOUSE_WHEEL
2395 && event.id >= MouseEvent.MOUSE_FIRST && event.id <= MouseEvent.MOUSE_LAST)
2396 || ((eventBit = eventMask
2397 & AWTEvent.WINDOW_EVENT_MASK) != 0 && (event.id >= WindowEvent.WINDOW_FIRST && event.id <= WindowEvent.WINDOW_LAST))
2398 || ((eventBit = eventMask
2399 & AWTEvent.ACTION_EVENT_MASK) != 0
2400 && event.id >= ActionEvent.ACTION_FIRST && event.id <= ActionEvent.ACTION_LAST)
2401 || ((eventBit = eventMask
2402 & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0
2403 && event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && event.id <= AdjustmentEvent.ADJUSTMENT_LAST)
2404 || ((eventBit = eventMask
2405 & AWTEvent.ITEM_EVENT_MASK) != 0
2406 && event.id >= ItemEvent.ITEM_FIRST && event.id <= ItemEvent.ITEM_LAST)
2407 || ((eventBit = eventMask
2408 & AWTEvent.TEXT_EVENT_MASK) != 0
2409 && event.id >= TextEvent.TEXT_FIRST && event.id <= TextEvent.TEXT_LAST)
2410 || ((eventBit = eventMask
2411 & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0
2412 && event.id >= InputMethodEvent.INPUT_METHOD_FIRST && event.id <= InputMethodEvent.INPUT_METHOD_LAST)
2413 || ((eventBit = eventMask
2414 & AWTEvent.PAINT_EVENT_MASK) != 0
2415 && event.id >= PaintEvent.PAINT_FIRST && event.id <= PaintEvent.PAINT_LAST)
2416 || ((eventBit = eventMask
2417 & AWTEvent.INVOCATION_EVENT_MASK) != 0
2418 && event.id >= InvocationEvent.INVOCATION_FIRST && event.id <= InvocationEvent.INVOCATION_LAST)
2419 || ((eventBit = eventMask
2420 & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && event.id == HierarchyEvent.HIERARCHY_CHANGED)
2421 || ((eventBit = eventMask
2422 & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && (event.id == HierarchyEvent.ANCESTOR_MOVED || event.id == HierarchyEvent.ANCESTOR_RESIZED))
2423 || ((eventBit = eventMask
2424 & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && event.id == WindowEvent.WINDOW_STATE_CHANGED)
2425 || ((eventBit = eventMask
2426 & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && (event.id == WindowEvent.WINDOW_GAINED_FOCUS || event.id == WindowEvent.WINDOW_LOST_FOCUS))
2427 || ((eventBit = eventMask
2428 & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && (event instanceof sun.awt.UngrabEvent))) {
2429 // Get the index of the call count for this event type.
2430 // Instead of using Math.log(...) we will calculate it with
2431 // bit shifts. That's what previous implementation looked like:
2432 //
2433 // int ci = (int) (Math.log(eventBit)/Math.log(2));
2434 int ci = 0;
2435 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) {
2436 }
2437 ci--;
2438 // Call the listener as many times as it was added for this
2439 // event type.
2440 for (int i = 0; i < calls[ci]; i++) {
2441 listener.eventDispatched(event);
2442 }
2443 }
2444 }
2445 }
2446
2447 /**
2448 * Returns a map of visual attributes for the abstract level description
2449 * of the given input method highlight, or null if no mapping is found.
2450 * The style field of the input method highlight is ignored. The map
2451 * returned is unmodifiable.
2452 * @param highlight input method highlight
2453 * @return style attribute map, or <code>null</code>
2454 * @exception HeadlessException if
2455 * <code>GraphicsEnvironment.isHeadless</code> returns true
2456 * @see java.awt.GraphicsEnvironment#isHeadless
2457 * @since 1.3
2458 */
2459 public abstract Map<java.awt.font.TextAttribute, ?> mapInputMethodHighlight(
2460 InputMethodHighlight highlight) throws HeadlessException;
2461
2462 private static PropertyChangeSupport createPropertyChangeSupport(
2463 Toolkit toolkit) {
2464 if (toolkit instanceof SunToolkit
2465 || toolkit instanceof HeadlessToolkit) {
2466 return new DesktopPropertyChangeSupport(toolkit);
2467 } else {
2468 return new PropertyChangeSupport(toolkit);
2469 }
2470 }
2471
2472 private static class DesktopPropertyChangeSupport extends
2473 PropertyChangeSupport {
2474 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = new StringBuilder(
2475 "desktop property change support key");
2476 private final Object source;
2477
2478 public DesktopPropertyChangeSupport(Object sourceBean) {
2479 super (sourceBean);
2480 source = sourceBean;
2481 }
2482
2483 @Override
2484 public synchronized void addPropertyChangeListener(
2485 String propertyName, PropertyChangeListener listener) {
2486 PropertyChangeSupport pcs = (PropertyChangeSupport) AppContext
2487 .getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2488 if (null == pcs) {
2489 pcs = new PropertyChangeSupport(source);
2490 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY,
2491 pcs);
2492 }
2493 pcs.addPropertyChangeListener(propertyName, listener);
2494 }
2495
2496 @Override
2497 public synchronized void removePropertyChangeListener(
2498 String propertyName, PropertyChangeListener listener) {
2499 PropertyChangeSupport pcs = (PropertyChangeSupport) AppContext
2500 .getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2501 if (null != pcs) {
2502 pcs
2503 .removePropertyChangeListener(propertyName,
2504 listener);
2505 }
2506 }
2507
2508 @Override
2509 public synchronized PropertyChangeListener[] getPropertyChangeListeners() {
2510 PropertyChangeSupport pcs = (PropertyChangeSupport) AppContext
2511 .getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2512 if (null != pcs) {
2513 return pcs.getPropertyChangeListeners();
2514 } else {
2515 return new PropertyChangeListener[0];
2516 }
2517 }
2518
2519 @Override
2520 public synchronized PropertyChangeListener[] getPropertyChangeListeners(
2521 String propertyName) {
2522 PropertyChangeSupport pcs = (PropertyChangeSupport) AppContext
2523 .getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2524 if (null != pcs) {
2525 return pcs.getPropertyChangeListeners(propertyName);
2526 } else {
2527 return new PropertyChangeListener[0];
2528 }
2529 }
2530
2531 @Override
2532 public synchronized void addPropertyChangeListener(
2533 PropertyChangeListener listener) {
2534 PropertyChangeSupport pcs = (PropertyChangeSupport) AppContext
2535 .getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2536 if (null == pcs) {
2537 pcs = new PropertyChangeSupport(source);
2538 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY,
2539 pcs);
2540 }
2541 pcs.addPropertyChangeListener(listener);
2542 }
2543
2544 @Override
2545 public synchronized void removePropertyChangeListener(
2546 PropertyChangeListener listener) {
2547 PropertyChangeSupport pcs = (PropertyChangeSupport) AppContext
2548 .getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2549 if (null != pcs) {
2550 pcs.removePropertyChangeListener(listener);
2551 }
2552 }
2553
2554 /*
2555 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport
2556 * use this method. If this will be changed we will need to change this class.
2557 */
2558 @Override
2559 public void firePropertyChange(final PropertyChangeEvent evt) {
2560 Object oldValue = evt.getOldValue();
2561 Object newValue = evt.getNewValue();
2562 String propertyName = evt.getPropertyName();
2563 if (oldValue != null && newValue != null
2564 && oldValue.equals(newValue)) {
2565 return;
2566 }
2567 Runnable updater = new Runnable() {
2568 public void run() {
2569 PropertyChangeSupport pcs = (PropertyChangeSupport) AppContext
2570 .getAppContext().get(
2571 PROP_CHANGE_SUPPORT_KEY);
2572 if (null != pcs) {
2573 pcs.firePropertyChange(evt);
2574 }
2575 }
2576 };
2577 final AppContext currentAppContext = AppContext
2578 .getAppContext();
2579 for (AppContext appContext : AppContext.getAppContexts()) {
2580 if (null == appContext || appContext.isDisposed()) {
2581 continue;
2582 }
2583 if (currentAppContext == appContext) {
2584 updater.run();
2585 } else {
2586 final PeerEvent e = new PeerEvent(source, updater,
2587 PeerEvent.ULTIMATE_PRIORITY_EVENT);
2588 SunToolkit.postEvent(appContext, e);
2589 }
2590 }
2591 }
2592 }
2593 }
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