1 /*
   2  * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package javax.swing;
  26 
  27 import java.awt.*;
  28 import java.awt.event.*;
  29 import java.beans.JavaBean;
  30 import java.beans.BeanProperty;
  31 import java.io.*;
  32 import java.util.*;
  33 
  34 import javax.swing.colorchooser.*;
  35 import javax.swing.plaf.ColorChooserUI;
  36 import javax.accessibility.*;
  37 
  38 import sun.swing.SwingUtilities2;
  39 
  40 /**
  41  * <code>JColorChooser</code> provides a pane of controls designed to allow
  42  * a user to manipulate and select a color.
  43  * For information about using color choosers, see
  44  * <a
  45  href="http://docs.oracle.com/javase/tutorial/uiswing/components/colorchooser.html">How to Use Color Choosers</a>,
  46  * a section in <em>The Java Tutorial</em>.
  47  *
  48  * <p>
  49  *
  50  * This class provides three levels of API:
  51  * <ol>
  52  * <li>A static convenience method which shows a modal color-chooser
  53  * dialog and returns the color selected by the user.
  54  * <li>A static convenience method for creating a color-chooser dialog
  55  * where <code>ActionListeners</code> can be specified to be invoked when
  56  * the user presses one of the dialog buttons.
  57  * <li>The ability to create instances of <code>JColorChooser</code> panes
  58  * directly (within any container). <code>PropertyChange</code> listeners
  59  * can be added to detect when the current "color" property changes.
  60  * </ol>
  61  * <p>
  62  * <strong>Warning:</strong> Swing is not thread safe. For more
  63  * information see <a
  64  * href="package-summary.html#threading">Swing's Threading
  65  * Policy</a>.
  66  * <p>
  67  * <strong>Warning:</strong>
  68  * Serialized objects of this class will not be compatible with
  69  * future Swing releases. The current serialization support is
  70  * appropriate for short term storage or RMI between applications running
  71  * the same version of Swing.  As of 1.4, support for long term storage
  72  * of all JavaBeans&trade;
  73  * has been added to the <code>java.beans</code> package.
  74  * Please see {@link java.beans.XMLEncoder}.
  75  *
  76  * @author James Gosling
  77  * @author Amy Fowler
  78  * @author Steve Wilson
  79  * @since 1.2
  80  */
  81 @JavaBean(defaultProperty = "UI", description = "A component that supports selecting a Color.")
  82 @SwingContainer(false)
  83 @SuppressWarnings("serial") // Same-version serialization only
  84 public class JColorChooser extends JComponent implements Accessible {
  85 
  86     /**
  87      * @see #getUIClassID
  88      * @see #readObject
  89      */
  90     private static final String uiClassID = "ColorChooserUI";
  91 
  92     private ColorSelectionModel selectionModel;
  93 
  94     private JComponent previewPanel = ColorChooserComponentFactory.getPreviewPanel();
  95 
  96     private AbstractColorChooserPanel[] chooserPanels = new AbstractColorChooserPanel[0];
  97 
  98     private boolean dragEnabled;
  99 
 100     /**
 101      * The selection model property name.
 102      */
 103     public static final String      SELECTION_MODEL_PROPERTY = "selectionModel";
 104 
 105     /**
 106      * The preview panel property name.
 107      */
 108     public static final String      PREVIEW_PANEL_PROPERTY = "previewPanel";
 109 
 110     /**
 111      * The chooserPanel array property name.
 112      */
 113     public static final String      CHOOSER_PANELS_PROPERTY = "chooserPanels";
 114 
 115 
 116     /**
 117      * Shows a modal color-chooser dialog and blocks until the
 118      * dialog is hidden.  If the user presses the "OK" button, then
 119      * this method hides/disposes the dialog and returns the selected color.
 120      * If the user presses the "Cancel" button or closes the dialog without
 121      * pressing "OK", then this method hides/disposes the dialog and returns
 122      * <code>null</code>.
 123      *
 124      * @param component    the parent <code>Component</code> for the dialog
 125      * @param title        the String containing the dialog's title
 126      * @param initialColor the initial Color set when the color-chooser is shown
 127      * @return the selected color or <code>null</code> if the user opted out
 128      * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 129      * returns true.
 130      * @see java.awt.GraphicsEnvironment#isHeadless
 131      */
 132     public static Color showDialog(Component component,
 133             String title, Color initialColor) throws HeadlessException {
 134         return showDialog(component, title, initialColor, true);
 135     }
 136 
 137     /**
 138      * Shows a modal color-chooser dialog and blocks until the
 139      * dialog is hidden.  If the user presses the "OK" button, then
 140      * this method hides/disposes the dialog and returns the selected color.
 141      * If the user presses the "Cancel" button or closes the dialog without
 142      * pressing "OK", then this method hides/disposes the dialog and returns
 143      * <code>null</code>.
 144      *
 145      * @param component    the parent <code>Component</code> for the dialog
 146      * @param title        the String containing the dialog's title
 147      * @param initialColor the initial Color set when the color-chooser is shown
 148      * @param colorTransparencySelectionEnabled true if the transparency of
 149      *            a color can be selected
 150      * @return the selected color or <code>null</code> if the user opted out
 151      * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 152      * returns true.
 153      * @see java.awt.GraphicsEnvironment#isHeadless
 154      */
 155     @SuppressWarnings("deprecation")
 156     public static Color showDialog(Component component, String title,
 157             Color initialColor, boolean colorTransparencySelectionEnabled)
 158             throws HeadlessException {
 159 
 160         final JColorChooser pane = new JColorChooser(initialColor != null?
 161                                                initialColor : Color.white);
 162 
 163         for (AbstractColorChooserPanel ccPanel : pane.getChooserPanels()) {
 164             ccPanel.setColorTransparencySelectionEnabled(
 165                     colorTransparencySelectionEnabled);
 166         }
 167 
 168         ColorTracker ok = new ColorTracker(pane);
 169         JDialog dialog = createDialog(component, title, true, pane, ok, null);
 170 
 171         dialog.addComponentListener(new ColorChooserDialog.DisposeOnClose());
 172 
 173         dialog.show(); // blocks until user brings dialog down...
 174 
 175         return ok.getColor();
 176     }
 177 
 178     /**
 179      * Creates and returns a new dialog containing the specified
 180      * <code>ColorChooser</code> pane along with "OK", "Cancel", and "Reset"
 181      * buttons. If the "OK" or "Cancel" buttons are pressed, the dialog is
 182      * automatically hidden (but not disposed).  If the "Reset"
 183      * button is pressed, the color-chooser's color will be reset to the
 184      * color which was set the last time <code>show</code> was invoked on the
 185      * dialog and the dialog will remain showing.
 186      *
 187      * @param c              the parent component for the dialog
 188      * @param title          the title for the dialog
 189      * @param modal          a boolean. When true, the remainder of the program
 190      *                       is inactive until the dialog is closed.
 191      * @param chooserPane    the color-chooser to be placed inside the dialog
 192      * @param okListener     the ActionListener invoked when "OK" is pressed
 193      * @param cancelListener the ActionListener invoked when "Cancel" is pressed
 194      * @return a new dialog containing the color-chooser pane
 195      * @exception HeadlessException if GraphicsEnvironment.isHeadless()
 196      * returns true.
 197      * @see java.awt.GraphicsEnvironment#isHeadless
 198      */
 199     public static JDialog createDialog(Component c, String title, boolean modal,
 200         JColorChooser chooserPane, ActionListener okListener,
 201         ActionListener cancelListener) throws HeadlessException {
 202 
 203         Window window = JOptionPane.getWindowForComponent(c);
 204         ColorChooserDialog dialog;
 205         if (window instanceof Frame) {
 206             dialog = new ColorChooserDialog((Frame)window, title, modal, c, chooserPane,
 207                                             okListener, cancelListener);
 208         } else {
 209             dialog = new ColorChooserDialog((Dialog)window, title, modal, c, chooserPane,
 210                                             okListener, cancelListener);
 211         }
 212         dialog.getAccessibleContext().setAccessibleDescription(title);
 213         return dialog;
 214     }
 215 
 216     /**
 217      * Creates a color chooser pane with an initial color of white.
 218      */
 219     public JColorChooser() {
 220         this(Color.white);
 221     }
 222 
 223     /**
 224      * Creates a color chooser pane with the specified initial color.
 225      *
 226      * @param initialColor the initial color set in the chooser
 227      */
 228     public JColorChooser(Color initialColor) {
 229         this( new DefaultColorSelectionModel(initialColor) );
 230 
 231     }
 232 
 233     /**
 234      * Creates a color chooser pane with the specified
 235      * <code>ColorSelectionModel</code>.
 236      *
 237      * @param model the <code>ColorSelectionModel</code> to be used
 238      */
 239     public JColorChooser(ColorSelectionModel model) {
 240         selectionModel = model;
 241         updateUI();
 242         dragEnabled = false;
 243     }
 244 
 245     /**
 246      * Returns the L&amp;F object that renders this component.
 247      *
 248      * @return the <code>ColorChooserUI</code> object that renders
 249      *          this component
 250      */
 251     public ColorChooserUI getUI() {
 252         return (ColorChooserUI)ui;
 253     }
 254 
 255     /**
 256      * Sets the L&amp;F object that renders this component.
 257      *
 258      * @param ui  the <code>ColorChooserUI</code> L&amp;F object
 259      * @see UIDefaults#getUI
 260      */
 261     @BeanProperty(hidden = true, description
 262             = "The UI object that implements the color chooser's LookAndFeel.")
 263     public void setUI(ColorChooserUI ui) {
 264         super.setUI(ui);
 265     }
 266 
 267     /**
 268      * Notification from the <code>UIManager</code> that the L&amp;F has changed.
 269      * Replaces the current UI object with the latest version from the
 270      * <code>UIManager</code>.
 271      *
 272      * @see JComponent#updateUI
 273      */
 274     public void updateUI() {
 275         setUI((ColorChooserUI)UIManager.getUI(this));
 276     }
 277 
 278     /**
 279      * Returns the name of the L&amp;F class that renders this component.
 280      *
 281      * @return the string "ColorChooserUI"
 282      * @see JComponent#getUIClassID
 283      * @see UIDefaults#getUI
 284      */
 285     @BeanProperty(bound = false)
 286     public String getUIClassID() {
 287         return uiClassID;
 288     }
 289 
 290     /**
 291      * Gets the current color value from the color chooser.
 292      * By default, this delegates to the model.
 293      *
 294      * @return the current color value of the color chooser
 295      */
 296     public Color getColor() {
 297         return selectionModel.getSelectedColor();
 298     }
 299 
 300     /**
 301      * Sets the current color of the color chooser to the specified color.
 302      * The <code>ColorSelectionModel</code> will fire a <code>ChangeEvent</code>
 303      * @param color the color to be set in the color chooser
 304      * @see JComponent#addPropertyChangeListener
 305      */
 306     @BeanProperty(bound = false, description
 307             = "The current color the chooser is to display.")
 308     public void setColor(Color color) {
 309         selectionModel.setSelectedColor(color);
 310 
 311     }
 312 
 313     /**
 314      * Sets the current color of the color chooser to the
 315      * specified RGB color.  Note that the values of red, green,
 316      * and blue should be between the numbers 0 and 255, inclusive.
 317      *
 318      * @param r   an int specifying the amount of Red
 319      * @param g   an int specifying the amount of Green
 320      * @param b   an int specifying the amount of Blue
 321      * @exception IllegalArgumentException if r,g,b values are out of range
 322      * @see java.awt.Color
 323      */
 324     public void setColor(int r, int g, int b) {
 325         setColor(new Color(r,g,b));
 326     }
 327 
 328     /**
 329      * Sets the current color of the color chooser to the
 330      * specified color.
 331      *
 332      * @param c an integer value that sets the current color in the chooser
 333      *          where the low-order 8 bits specify the Blue value,
 334      *          the next 8 bits specify the Green value, and the 8 bits
 335      *          above that specify the Red value.
 336      */
 337     public void setColor(int c) {
 338         setColor((c >> 16) & 0xFF, (c >> 8) & 0xFF, c & 0xFF);
 339     }
 340 
 341     /**
 342      * Sets the <code>dragEnabled</code> property,
 343      * which must be <code>true</code> to enable
 344      * automatic drag handling (the first part of drag and drop)
 345      * on this component.
 346      * The <code>transferHandler</code> property needs to be set
 347      * to a non-<code>null</code> value for the drag to do
 348      * anything.  The default value of the <code>dragEnabled</code>
 349      * property
 350      * is <code>false</code>.
 351      *
 352      * <p>
 353      *
 354      * When automatic drag handling is enabled,
 355      * most look and feels begin a drag-and-drop operation
 356      * when the user presses the mouse button over the preview panel.
 357      * Some look and feels might not support automatic drag and drop;
 358      * they will ignore this property.  You can work around such
 359      * look and feels by modifying the component
 360      * to directly call the <code>exportAsDrag</code> method of a
 361      * <code>TransferHandler</code>.
 362      *
 363      * @param b the value to set the <code>dragEnabled</code> property to
 364      * @exception HeadlessException if
 365      *            <code>b</code> is <code>true</code> and
 366      *            <code>GraphicsEnvironment.isHeadless()</code>
 367      *            returns <code>true</code>
 368      *
 369      * @since 1.4
 370      *
 371      * @see java.awt.GraphicsEnvironment#isHeadless
 372      * @see #getDragEnabled
 373      * @see #setTransferHandler
 374      * @see TransferHandler
 375      */
 376     @BeanProperty(bound = false, description
 377             = "Determines whether automatic drag handling is enabled.")
 378     public void setDragEnabled(boolean b) {
 379         if (b && GraphicsEnvironment.isHeadless()) {
 380             throw new HeadlessException();
 381         }
 382         dragEnabled = b;
 383     }
 384 
 385     /**
 386      * Gets the value of the <code>dragEnabled</code> property.
 387      *
 388      * @return  the value of the <code>dragEnabled</code> property
 389      * @see #setDragEnabled
 390      * @since 1.4
 391      */
 392     public boolean getDragEnabled() {
 393         return dragEnabled;
 394     }
 395 
 396     /**
 397      * Sets the current preview panel.
 398      * This will fire a <code>PropertyChangeEvent</code> for the property
 399      * named "previewPanel".
 400      *
 401      * @param preview the <code>JComponent</code> which displays the current color
 402      * @see JComponent#addPropertyChangeListener
 403      */
 404     @BeanProperty(hidden = true, description
 405             = "The UI component which displays the current color.")
 406     public void setPreviewPanel(JComponent preview) {
 407 
 408         if (previewPanel != preview) {
 409             JComponent oldPreview = previewPanel;
 410             previewPanel = preview;
 411             firePropertyChange(JColorChooser.PREVIEW_PANEL_PROPERTY, oldPreview, preview);
 412         }
 413     }
 414 
 415     /**
 416      * Returns the preview panel that shows a chosen color.
 417      *
 418      * @return a <code>JComponent</code> object -- the preview panel
 419      */
 420     public JComponent getPreviewPanel() {
 421         return previewPanel;
 422     }
 423 
 424     /**
 425      * Adds a color chooser panel to the color chooser.
 426      *
 427      * @param panel the <code>AbstractColorChooserPanel</code> to be added
 428      */
 429     public void addChooserPanel( AbstractColorChooserPanel panel ) {
 430         AbstractColorChooserPanel[] oldPanels = getChooserPanels();
 431         AbstractColorChooserPanel[] newPanels = new AbstractColorChooserPanel[oldPanels.length+1];
 432         System.arraycopy(oldPanels, 0, newPanels, 0, oldPanels.length);
 433         newPanels[newPanels.length-1] = panel;
 434         setChooserPanels(newPanels);
 435     }
 436 
 437     /**
 438      * Removes the Color Panel specified.
 439      *
 440      * @param panel   a string that specifies the panel to be removed
 441      * @return the color panel
 442      * @exception IllegalArgumentException if panel is not in list of
 443      *                  known chooser panels
 444      */
 445     public AbstractColorChooserPanel removeChooserPanel( AbstractColorChooserPanel panel ) {
 446 
 447 
 448         int containedAt = -1;
 449 
 450         for (int i = 0; i < chooserPanels.length; i++) {
 451             if (chooserPanels[i] == panel) {
 452                 containedAt = i;
 453                 break;
 454             }
 455         }
 456         if (containedAt == -1) {
 457             throw new IllegalArgumentException("chooser panel not in this chooser");
 458         }
 459 
 460         AbstractColorChooserPanel[] newArray = new AbstractColorChooserPanel[chooserPanels.length-1];
 461 
 462         if (containedAt == chooserPanels.length-1) {  // at end
 463             System.arraycopy(chooserPanels, 0, newArray, 0, newArray.length);
 464         }
 465         else if (containedAt == 0) {  // at start
 466             System.arraycopy(chooserPanels, 1, newArray, 0, newArray.length);
 467         }
 468         else {  // in middle
 469             System.arraycopy(chooserPanels, 0, newArray, 0, containedAt);
 470             System.arraycopy(chooserPanels, containedAt+1,
 471                              newArray, containedAt, (chooserPanels.length - containedAt - 1));
 472         }
 473 
 474         setChooserPanels(newArray);
 475 
 476         return panel;
 477     }
 478 
 479 
 480     /**
 481      * Specifies the Color Panels used to choose a color value.
 482      *
 483      * @param panels  an array of <code>AbstractColorChooserPanel</code>
 484      *          objects
 485      */
 486     @BeanProperty(hidden = true, description
 487             = "An array of different chooser types.")
 488     public void setChooserPanels( AbstractColorChooserPanel[] panels) {
 489         AbstractColorChooserPanel[] oldValue = chooserPanels;
 490         chooserPanels = panels;
 491         firePropertyChange(CHOOSER_PANELS_PROPERTY, oldValue, panels);
 492     }
 493 
 494     /**
 495      * Returns the specified color panels.
 496      *
 497      * @return an array of <code>AbstractColorChooserPanel</code> objects
 498      */
 499     public AbstractColorChooserPanel[] getChooserPanels() {
 500         return chooserPanels;
 501     }
 502 
 503     /**
 504      * Returns the data model that handles color selections.
 505      *
 506      * @return a <code>ColorSelectionModel</code> object
 507      */
 508     public ColorSelectionModel getSelectionModel() {
 509         return selectionModel;
 510     }
 511 
 512 
 513     /**
 514      * Sets the model containing the selected color.
 515      *
 516      * @param newModel   the new <code>ColorSelectionModel</code> object
 517      */
 518     @BeanProperty(hidden = true, description
 519             = "The model which contains the currently selected color.")
 520     public void setSelectionModel(ColorSelectionModel newModel ) {
 521         ColorSelectionModel oldModel = selectionModel;
 522         selectionModel = newModel;
 523         firePropertyChange(JColorChooser.SELECTION_MODEL_PROPERTY, oldModel, newModel);
 524     }
 525 
 526 
 527     /**
 528      * See <code>readObject</code> and <code>writeObject</code> in
 529      * <code>JComponent</code> for more
 530      * information about serialization in Swing.
 531      */
 532     private void writeObject(ObjectOutputStream s) throws IOException {
 533         s.defaultWriteObject();
 534         if (getUIClassID().equals(uiClassID)) {
 535             byte count = JComponent.getWriteObjCounter(this);
 536             JComponent.setWriteObjCounter(this, --count);
 537             if (count == 0 && ui != null) {
 538                 ui.installUI(this);
 539             }
 540         }
 541     }
 542 
 543 
 544     /**
 545      * Returns a string representation of this <code>JColorChooser</code>.
 546      * This method
 547      * is intended to be used only for debugging purposes, and the
 548      * content and format of the returned string may vary between
 549      * implementations. The returned string may be empty but may not
 550      * be <code>null</code>.
 551      *
 552      * @return  a string representation of this <code>JColorChooser</code>
 553      */
 554     protected String paramString() {
 555         StringBuilder chooserPanelsString = new StringBuilder();
 556         for (AbstractColorChooserPanel panel : chooserPanels) {
 557             chooserPanelsString.append('[').append(panel)
 558                                .append(']');
 559         }
 560         String previewPanelString = (previewPanel != null ? previewPanel
 561                 .toString() : "");
 562 
 563         return super.paramString() + ",chooserPanels="
 564                 + chooserPanelsString.toString() + ",previewPanel="
 565                 + previewPanelString;
 566     }
 567 
 568 /////////////////
 569 // Accessibility support
 570 ////////////////
 571 
 572     /**
 573      * The accessible context.
 574      */
 575     protected AccessibleContext accessibleContext = null;
 576 
 577     /**
 578      * Gets the AccessibleContext associated with this JColorChooser.
 579      * For color choosers, the AccessibleContext takes the form of an
 580      * AccessibleJColorChooser.
 581      * A new AccessibleJColorChooser instance is created if necessary.
 582      *
 583      * @return an AccessibleJColorChooser that serves as the
 584      *         AccessibleContext of this JColorChooser
 585      */
 586     @BeanProperty(bound = false)
 587     public AccessibleContext getAccessibleContext() {
 588         if (accessibleContext == null) {
 589             accessibleContext = new AccessibleJColorChooser();
 590         }
 591         return accessibleContext;
 592     }
 593 
 594     /**
 595      * This class implements accessibility support for the
 596      * <code>JColorChooser</code> class.  It provides an implementation of the
 597      * Java Accessibility API appropriate to color chooser user-interface
 598      * elements.
 599      */
 600     protected class AccessibleJColorChooser extends AccessibleJComponent {
 601 
 602         /**
 603          * Get the role of this object.
 604          *
 605          * @return an instance of AccessibleRole describing the role of the
 606          * object
 607          * @see AccessibleRole
 608          */
 609         public AccessibleRole getAccessibleRole() {
 610             return AccessibleRole.COLOR_CHOOSER;
 611         }
 612 
 613     } // inner class AccessibleJColorChooser
 614 }
 615 
 616 
 617 /*
 618  * Class which builds a color chooser dialog consisting of
 619  * a JColorChooser with "Ok", "Cancel", and "Reset" buttons.
 620  *
 621  * Note: This needs to be fixed to deal with localization!
 622  */
 623 @SuppressWarnings("serial") // Superclass is not serializable across versions
 624 class ColorChooserDialog extends JDialog {
 625     private Color initialColor;
 626     private JColorChooser chooserPane;
 627     private JButton cancelButton;
 628 
 629     public ColorChooserDialog(Dialog owner, String title, boolean modal,
 630         Component c, JColorChooser chooserPane,
 631         ActionListener okListener, ActionListener cancelListener)
 632         throws HeadlessException {
 633         super(owner, title, modal);
 634         initColorChooserDialog(c, chooserPane, okListener, cancelListener);
 635     }
 636 
 637     public ColorChooserDialog(Frame owner, String title, boolean modal,
 638         Component c, JColorChooser chooserPane,
 639         ActionListener okListener, ActionListener cancelListener)
 640         throws HeadlessException {
 641         super(owner, title, modal);
 642         initColorChooserDialog(c, chooserPane, okListener, cancelListener);
 643     }
 644 
 645     protected void initColorChooserDialog(Component c, JColorChooser chooserPane,
 646         ActionListener okListener, ActionListener cancelListener) {
 647         //setResizable(false);
 648 
 649         this.chooserPane = chooserPane;
 650 
 651         Locale locale = getLocale();
 652         String okString = UIManager.getString("ColorChooser.okText", locale);
 653         String cancelString = UIManager.getString("ColorChooser.cancelText", locale);
 654         String resetString = UIManager.getString("ColorChooser.resetText", locale);
 655 
 656         Container contentPane = getContentPane();
 657         contentPane.setLayout(new BorderLayout());
 658         contentPane.add(chooserPane, BorderLayout.CENTER);
 659 
 660         /*
 661          * Create Lower button panel
 662          */
 663         JPanel buttonPane = new JPanel();
 664         buttonPane.setLayout(new FlowLayout(FlowLayout.CENTER));
 665         JButton okButton = new JButton(okString);
 666         getRootPane().setDefaultButton(okButton);
 667         okButton.getAccessibleContext().setAccessibleDescription(okString);
 668         okButton.setActionCommand("OK");
 669         okButton.addActionListener(new ActionListener() {
 670             @SuppressWarnings("deprecation")
 671             public void actionPerformed(ActionEvent e) {
 672                 hide();
 673             }
 674         });
 675         if (okListener != null) {
 676             okButton.addActionListener(okListener);
 677         }
 678         buttonPane.add(okButton);
 679 
 680         cancelButton = new JButton(cancelString);
 681         cancelButton.getAccessibleContext().setAccessibleDescription(cancelString);
 682 
 683         // The following few lines are used to register esc to close the dialog
 684         @SuppressWarnings("serial") // anonymous class
 685         Action cancelKeyAction = new AbstractAction() {
 686             public void actionPerformed(ActionEvent e) {
 687                 ((AbstractButton)e.getSource()).fireActionPerformed(e);
 688             }
 689         };
 690         KeyStroke cancelKeyStroke = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0);
 691         InputMap inputMap = cancelButton.getInputMap(JComponent.
 692                                                      WHEN_IN_FOCUSED_WINDOW);
 693         ActionMap actionMap = cancelButton.getActionMap();
 694         if (inputMap != null && actionMap != null) {
 695             inputMap.put(cancelKeyStroke, "cancel");
 696             actionMap.put("cancel", cancelKeyAction);
 697         }
 698         // end esc handling
 699 
 700         cancelButton.setActionCommand("cancel");
 701         cancelButton.addActionListener(new ActionListener() {
 702             @SuppressWarnings("deprecation")
 703             public void actionPerformed(ActionEvent e) {
 704                 hide();
 705             }
 706         });
 707         if (cancelListener != null) {
 708             cancelButton.addActionListener(cancelListener);
 709         }
 710         buttonPane.add(cancelButton);
 711 
 712         JButton resetButton = new JButton(resetString);
 713         resetButton.getAccessibleContext().setAccessibleDescription(resetString);
 714         resetButton.addActionListener(new ActionListener() {
 715            public void actionPerformed(ActionEvent e) {
 716                reset();
 717            }
 718         });
 719         int mnemonic = SwingUtilities2.getUIDefaultsInt("ColorChooser.resetMnemonic", locale, -1);
 720         if (mnemonic != -1) {
 721             resetButton.setMnemonic(mnemonic);
 722         }
 723         buttonPane.add(resetButton);
 724         contentPane.add(buttonPane, BorderLayout.SOUTH);
 725 
 726         if (JDialog.isDefaultLookAndFeelDecorated()) {
 727             boolean supportsWindowDecorations =
 728             UIManager.getLookAndFeel().getSupportsWindowDecorations();
 729             if (supportsWindowDecorations) {
 730                 getRootPane().setWindowDecorationStyle(JRootPane.COLOR_CHOOSER_DIALOG);
 731             }
 732         }
 733         applyComponentOrientation(((c == null) ? getRootPane() : c).getComponentOrientation());
 734 
 735         pack();
 736         setLocationRelativeTo(c);
 737 
 738         this.addWindowListener(new Closer());
 739     }
 740 
 741     @SuppressWarnings("deprecation")
 742     public void show() {
 743         initialColor = chooserPane.getColor();
 744         super.show();
 745     }
 746 
 747     public void reset() {
 748         chooserPane.setColor(initialColor);
 749     }
 750 
 751     @SuppressWarnings("serial") // JDK-implementation class
 752     class Closer extends WindowAdapter implements Serializable{
 753         @SuppressWarnings("deprecation")
 754         public void windowClosing(WindowEvent e) {
 755             cancelButton.doClick(0);
 756             Window w = e.getWindow();
 757             w.hide();
 758         }
 759     }
 760 
 761     @SuppressWarnings("serial") // JDK-implementation class
 762     static class DisposeOnClose extends ComponentAdapter implements Serializable{
 763         public void componentHidden(ComponentEvent e) {
 764             Window w = (Window)e.getComponent();
 765             w.dispose();
 766         }
 767     }
 768 
 769 }
 770 
 771 @SuppressWarnings("serial") // JDK-implementation class
 772 class ColorTracker implements ActionListener, Serializable {
 773     JColorChooser chooser;
 774     Color color;
 775 
 776     public ColorTracker(JColorChooser c) {
 777         chooser = c;
 778     }
 779 
 780     public void actionPerformed(ActionEvent e) {
 781         color = chooser.getColor();
 782     }
 783 
 784     public Color getColor() {
 785         return color;
 786     }
 787 }