--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/javax/swing/JComboBox.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,2411 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+package javax.swing;
+
+import java.beans.*;
+import java.util.*;
+
+import java.awt.*;
+import java.awt.event.*;
+
+import java.io.Serializable;
+import java.io.ObjectOutputStream;
+import java.io.ObjectInputStream;
+import java.io.IOException;
+
+import javax.swing.event.*;
+import javax.swing.plaf.*;
+import javax.swing.border.*;
+
+import javax.accessibility.*;
+
+/**
+ * A component that combines a button or editable field and a drop-down list.
+ * The user can select a value from the drop-down list, which appears at the
+ * user's request. If you make the combo box editable, then the combo box
+ * includes an editable field into which the user can type a value.
+ * <p>
+ * <strong>Warning:</strong> Swing is not thread safe. For more
+ * information see <a
+ * href="package-summary.html#threading">Swing's Threading
+ * Policy</a>.
+ * <p>
+ * <strong>Warning:</strong>
+ * Serialized objects of this class will not be compatible with
+ * future Swing releases. The current serialization support is
+ * appropriate for short term storage or RMI between applications running
+ * the same version of Swing. As of 1.4, support for long term storage
+ * of all JavaBeans<sup><font size="-2">TM</font></sup>
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ *
+ * <p>
+ * See <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/combobox.html">How to Use Combo Boxes</a>
+ * in <a href="http://java.sun.com/Series/Tutorial/index.html"><em>The Java Tutorial</em></a>
+ * for further information.
+ * <p>
+ * @see ComboBoxModel
+ * @see DefaultComboBoxModel
+ *
+ * @beaninfo
+ * attribute: isContainer false
+ * description: A combination of a text field and a drop-down list.
+ *
+ * @author Arnaud Weber
+ * @author Mark Davidson
+ */
+public class JComboBox extends JComponent
+implements ItemSelectable,ListDataListener,ActionListener, Accessible {
+ /**
+ * @see #getUIClassID
+ * @see #readObject
+ */
+ private static final String uiClassID = "ComboBoxUI";
+
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #getModel
+ * @see #setModel
+ */
+ protected ComboBoxModel dataModel;
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #getRenderer
+ * @see #setRenderer
+ */
+ protected ListCellRenderer renderer;
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #getEditor
+ * @see #setEditor
+ */
+ protected ComboBoxEditor editor;
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #getMaximumRowCount
+ * @see #setMaximumRowCount
+ */
+ protected int maximumRowCount = 8;
+
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #isEditable
+ * @see #setEditable
+ */
+ protected boolean isEditable = false;
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #setKeySelectionManager
+ * @see #getKeySelectionManager
+ */
+ protected KeySelectionManager keySelectionManager = null;
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #setActionCommand
+ * @see #getActionCommand
+ */
+ protected String actionCommand = "comboBoxChanged";
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override. Use the accessor methods instead.
+ *
+ * @see #setLightWeightPopupEnabled
+ * @see #isLightWeightPopupEnabled
+ */
+ protected boolean lightWeightPopupEnabled = JPopupMenu.getDefaultLightWeightPopupEnabled();
+
+ /**
+ * This protected field is implementation specific. Do not access directly
+ * or override.
+ */
+ protected Object selectedItemReminder = null;
+
+ private Object prototypeDisplayValue;
+
+ // Flag to ensure that infinite loops do not occur with ActionEvents.
+ private boolean firingActionEvent = false;
+
+ // Flag to ensure the we don't get multiple ActionEvents on item selection.
+ private boolean selectingItem = false;
+
+ /**
+ * Creates a <code>JComboBox</code> that takes its items from an
+ * existing <code>ComboBoxModel</code>. Since the
+ * <code>ComboBoxModel</code> is provided, a combo box created using
+ * this constructor does not create a default combo box model and
+ * may impact how the insert, remove and add methods behave.
+ *
+ * @param aModel the <code>ComboBoxModel</code> that provides the
+ * displayed list of items
+ * @see DefaultComboBoxModel
+ */
+ public JComboBox(ComboBoxModel aModel) {
+ super();
+ setModel(aModel);
+ init();
+ }
+
+ /**
+ * Creates a <code>JComboBox</code> that contains the elements
+ * in the specified array. By default the first item in the array
+ * (and therefore the data model) becomes selected.
+ *
+ * @param items an array of objects to insert into the combo box
+ * @see DefaultComboBoxModel
+ */
+ public JComboBox(final Object items[]) {
+ super();
+ setModel(new DefaultComboBoxModel(items));
+ init();
+ }
+
+ /**
+ * Creates a <code>JComboBox</code> that contains the elements
+ * in the specified Vector. By default the first item in the vector
+ * (and therefore the data model) becomes selected.
+ *
+ * @param items an array of vectors to insert into the combo box
+ * @see DefaultComboBoxModel
+ */
+ public JComboBox(Vector<?> items) {
+ super();
+ setModel(new DefaultComboBoxModel(items));
+ init();
+ }
+
+ /**
+ * Creates a <code>JComboBox</code> with a default data model.
+ * The default data model is an empty list of objects.
+ * Use <code>addItem</code> to add items. By default the first item
+ * in the data model becomes selected.
+ *
+ * @see DefaultComboBoxModel
+ */
+ public JComboBox() {
+ super();
+ setModel(new DefaultComboBoxModel());
+ init();
+ }
+
+ private void init() {
+ installAncestorListener();
+ setOpaque(true);
+ updateUI();
+ }
+
+ protected void installAncestorListener() {
+ addAncestorListener(new AncestorListener(){
+ public void ancestorAdded(AncestorEvent event){ hidePopup();}
+ public void ancestorRemoved(AncestorEvent event){ hidePopup();}
+ public void ancestorMoved(AncestorEvent event){
+ if (event.getSource() != JComboBox.this)
+ hidePopup();
+ }});
+ }
+
+ /**
+ * Sets the L&F object that renders this component.
+ *
+ * @param ui the <code>ComboBoxUI</code> L&F object
+ * @see UIDefaults#getUI
+ *
+ * @beaninfo
+ * bound: true
+ * hidden: true
+ * attribute: visualUpdate true
+ * description: The UI object that implements the Component's LookAndFeel.
+ */
+ public void setUI(ComboBoxUI ui) {
+ super.setUI(ui);
+ }
+
+ /**
+ * Resets the UI property to a value from the current look and feel.
+ *
+ * @see JComponent#updateUI
+ */
+ public void updateUI() {
+ setUI((ComboBoxUI)UIManager.getUI(this));
+
+ ListCellRenderer renderer = getRenderer();
+ if (renderer instanceof Component) {
+ SwingUtilities.updateComponentTreeUI((Component)renderer);
+ }
+ }
+
+
+ /**
+ * Returns the name of the L&F class that renders this component.
+ *
+ * @return the string "ComboBoxUI"
+ * @see JComponent#getUIClassID
+ * @see UIDefaults#getUI
+ */
+ public String getUIClassID() {
+ return uiClassID;
+ }
+
+
+ /**
+ * Returns the L&F object that renders this component.
+ *
+ * @return the ComboBoxUI object that renders this component
+ */
+ public ComboBoxUI getUI() {
+ return(ComboBoxUI)ui;
+ }
+
+ /**
+ * Sets the data model that the <code>JComboBox</code> uses to obtain
+ * the list of items.
+ *
+ * @param aModel the <code>ComboBoxModel</code> that provides the
+ * displayed list of items
+ *
+ * @beaninfo
+ * bound: true
+ * description: Model that the combo box uses to get data to display.
+ */
+ public void setModel(ComboBoxModel aModel) {
+ ComboBoxModel oldModel = dataModel;
+ if (oldModel != null) {
+ oldModel.removeListDataListener(this);
+ }
+ dataModel = aModel;
+ dataModel.addListDataListener(this);
+
+ // set the current selected item.
+ selectedItemReminder = dataModel.getSelectedItem();
+
+ firePropertyChange( "model", oldModel, dataModel);
+ }
+
+ /**
+ * Returns the data model currently used by the <code>JComboBox</code>.
+ *
+ * @return the <code>ComboBoxModel</code> that provides the displayed
+ * list of items
+ */
+ public ComboBoxModel getModel() {
+ return dataModel;
+ }
+
+ /*
+ * Properties
+ */
+
+ /**
+ * Sets the <code>lightWeightPopupEnabled</code> property, which
+ * provides a hint as to whether or not a lightweight
+ * <code>Component</code> should be used to contain the
+ * <code>JComboBox</code>, versus a heavyweight
+ * <code>Component</code> such as a <code>Panel</code>
+ * or a <code>Window</code>. The decision of lightweight
+ * versus heavyweight is ultimately up to the
+ * <code>JComboBox</code>. Lightweight windows are more
+ * efficient than heavyweight windows, but lightweight
+ * and heavyweight components do not mix well in a GUI.
+ * If your application mixes lightweight and heavyweight
+ * components, you should disable lightweight popups.
+ * The default value for the <code>lightWeightPopupEnabled</code>
+ * property is <code>true</code>, unless otherwise specified
+ * by the look and feel. Some look and feels always use
+ * heavyweight popups, no matter what the value of this property.
+ * <p>
+ * See the article <a href="http://java.sun.com/products/jfc/tsc/articles/mixing/index.html">Mixing Heavy and Light Components</a>
+ * on <a href="http://java.sun.com/products/jfc/tsc">
+ * <em>The Swing Connection</em></a>
+ * This method fires a property changed event.
+ *
+ * @param aFlag if <code>true</code>, lightweight popups are desired
+ *
+ * @beaninfo
+ * bound: true
+ * expert: true
+ * description: Set to <code>false</code> to require heavyweight popups.
+ */
+ public void setLightWeightPopupEnabled(boolean aFlag) {
+ boolean oldFlag = lightWeightPopupEnabled;
+ lightWeightPopupEnabled = aFlag;
+ firePropertyChange("lightWeightPopupEnabled", oldFlag, lightWeightPopupEnabled);
+ }
+
+ /**
+ * Gets the value of the <code>lightWeightPopupEnabled</code>
+ * property.
+ *
+ * @return the value of the <code>lightWeightPopupEnabled</code>
+ * property
+ * @see #setLightWeightPopupEnabled
+ */
+ public boolean isLightWeightPopupEnabled() {
+ return lightWeightPopupEnabled;
+ }
+
+ /**
+ * Determines whether the <code>JComboBox</code> field is editable.
+ * An editable <code>JComboBox</code> allows the user to type into the
+ * field or selected an item from the list to initialize the field,
+ * after which it can be edited. (The editing affects only the field,
+ * the list item remains intact.) A non editable <code>JComboBox</code>
+ * displays the selected item in the field,
+ * but the selection cannot be modified.
+ *
+ * @param aFlag a boolean value, where true indicates that the
+ * field is editable
+ *
+ * @beaninfo
+ * bound: true
+ * preferred: true
+ * description: If true, the user can type a new value in the combo box.
+ */
+ public void setEditable(boolean aFlag) {
+ boolean oldFlag = isEditable;
+ isEditable = aFlag;
+ firePropertyChange( "editable", oldFlag, isEditable );
+ }
+
+ /**
+ * Returns true if the <code>JComboBox</code> is editable.
+ * By default, a combo box is not editable.
+ *
+ * @return true if the <code>JComboBox</code> is editable, else false
+ */
+ public boolean isEditable() {
+ return isEditable;
+ }
+
+ /**
+ * Sets the maximum number of rows the <code>JComboBox</code> displays.
+ * If the number of objects in the model is greater than count,
+ * the combo box uses a scrollbar.
+ *
+ * @param count an integer specifying the maximum number of items to
+ * display in the list before using a scrollbar
+ * @beaninfo
+ * bound: true
+ * preferred: true
+ * description: The maximum number of rows the popup should have
+ */
+ public void setMaximumRowCount(int count) {
+ int oldCount = maximumRowCount;
+ maximumRowCount = count;
+ firePropertyChange( "maximumRowCount", oldCount, maximumRowCount );
+ }
+
+ /**
+ * Returns the maximum number of items the combo box can display
+ * without a scrollbar
+ *
+ * @return an integer specifying the maximum number of items that are
+ * displayed in the list before using a scrollbar
+ */
+ public int getMaximumRowCount() {
+ return maximumRowCount;
+ }
+
+ /**
+ * Sets the renderer that paints the list items and the item selected from the list in
+ * the JComboBox field. The renderer is used if the JComboBox is not
+ * editable. If it is editable, the editor is used to render and edit
+ * the selected item.
+ * <p>
+ * The default renderer displays a string or an icon.
+ * Other renderers can handle graphic images and composite items.
+ * <p>
+ * To display the selected item,
+ * <code>aRenderer.getListCellRendererComponent</code>
+ * is called, passing the list object and an index of -1.
+ *
+ * @param aRenderer the <code>ListCellRenderer</code> that
+ * displays the selected item
+ * @see #setEditor
+ * @beaninfo
+ * bound: true
+ * expert: true
+ * description: The renderer that paints the item selected in the list.
+ */
+ public void setRenderer(ListCellRenderer aRenderer) {
+ ListCellRenderer oldRenderer = renderer;
+ renderer = aRenderer;
+ firePropertyChange( "renderer", oldRenderer, renderer );
+ invalidate();
+ }
+
+ /**
+ * Returns the renderer used to display the selected item in the
+ * <code>JComboBox</code> field.
+ *
+ * @return the <code>ListCellRenderer</code> that displays
+ * the selected item.
+ */
+ public ListCellRenderer getRenderer() {
+ return renderer;
+ }
+
+ /**
+ * Sets the editor used to paint and edit the selected item in the
+ * <code>JComboBox</code> field. The editor is used only if the
+ * receiving <code>JComboBox</code> is editable. If not editable,
+ * the combo box uses the renderer to paint the selected item.
+ *
+ * @param anEditor the <code>ComboBoxEditor</code> that
+ * displays the selected item
+ * @see #setRenderer
+ * @beaninfo
+ * bound: true
+ * expert: true
+ * description: The editor that combo box uses to edit the current value
+ */
+ public void setEditor(ComboBoxEditor anEditor) {
+ ComboBoxEditor oldEditor = editor;
+
+ if ( editor != null ) {
+ editor.removeActionListener(this);
+ }
+ editor = anEditor;
+ if ( editor != null ) {
+ editor.addActionListener(this);
+ }
+ firePropertyChange( "editor", oldEditor, editor );
+ }
+
+ /**
+ * Returns the editor used to paint and edit the selected item in the
+ * <code>JComboBox</code> field.
+ *
+ * @return the <code>ComboBoxEditor</code> that displays the selected item
+ */
+ public ComboBoxEditor getEditor() {
+ return editor;
+ }
+
+ //
+ // Selection
+ //
+
+ /**
+ * Sets the selected item in the combo box display area to the object in
+ * the argument.
+ * If <code>anObject</code> is in the list, the display area shows
+ * <code>anObject</code> selected.
+ * <p>
+ * If <code>anObject</code> is <i>not</i> in the list and the combo box is
+ * uneditable, it will not change the current selection. For editable
+ * combo boxes, the selection will change to <code>anObject</code>.
+ * <p>
+ * If this constitutes a change in the selected item,
+ * <code>ItemListener</code>s added to the combo box will be notified with
+ * one or two <code>ItemEvent</code>s.
+ * If there is a current selected item, an <code>ItemEvent</code> will be
+ * fired and the state change will be <code>ItemEvent.DESELECTED</code>.
+ * If <code>anObject</code> is in the list and is not currently selected
+ * then an <code>ItemEvent</code> will be fired and the state change will
+ * be <code>ItemEvent.SELECTED</code>.
+ * <p>
+ * <code>ActionListener</code>s added to the combo box will be notified
+ * with an <code>ActionEvent</code> when this method is called.
+ *
+ * @param anObject the list object to select; use <code>null</code> to
+ clear the selection
+ * @beaninfo
+ * preferred: true
+ * description: Sets the selected item in the JComboBox.
+ */
+ public void setSelectedItem(Object anObject) {
+ Object oldSelection = selectedItemReminder;
+ Object objectToSelect = anObject;
+ if (oldSelection == null || !oldSelection.equals(anObject)) {
+
+ if (anObject != null && !isEditable()) {
+ // For non editable combo boxes, an invalid selection
+ // will be rejected.
+ boolean found = false;
+ for (int i = 0; i < dataModel.getSize(); i++) {
+ Object element = dataModel.getElementAt(i);
+ if (anObject.equals(element)) {
+ found = true;
+ objectToSelect = element;
+ break;
+ }
+ }
+ if (!found) {
+ return;
+ }
+ }
+
+ // Must toggle the state of this flag since this method
+ // call may result in ListDataEvents being fired.
+ selectingItem = true;
+ dataModel.setSelectedItem(objectToSelect);
+ selectingItem = false;
+
+ if (selectedItemReminder != dataModel.getSelectedItem()) {
+ // in case a users implementation of ComboBoxModel
+ // doesn't fire a ListDataEvent when the selection
+ // changes.
+ selectedItemChanged();
+ }
+ }
+ fireActionEvent();
+ }
+
+ /**
+ * Returns the current selected item.
+ * <p>
+ * If the combo box is editable, then this value may not have been added
+ * to the combo box with <code>addItem</code>, <code>insertItemAt</code>
+ * or the data constructors.
+ *
+ * @return the current selected Object
+ * @see #setSelectedItem
+ */
+ public Object getSelectedItem() {
+ return dataModel.getSelectedItem();
+ }
+
+ /**
+ * Selects the item at index <code>anIndex</code>.
+ *
+ * @param anIndex an integer specifying the list item to select,
+ * where 0 specifies the first item in the list and -1 indicates no selection
+ * @exception IllegalArgumentException if <code>anIndex</code> < -1 or
+ * <code>anIndex</code> is greater than or equal to size
+ * @beaninfo
+ * preferred: true
+ * description: The item at index is selected.
+ */
+ public void setSelectedIndex(int anIndex) {
+ int size = dataModel.getSize();
+
+ if ( anIndex == -1 ) {
+ setSelectedItem( null );
+ } else if ( anIndex < -1 || anIndex >= size ) {
+ throw new IllegalArgumentException("setSelectedIndex: " + anIndex + " out of bounds");
+ } else {
+ setSelectedItem(dataModel.getElementAt(anIndex));
+ }
+ }
+
+ /**
+ * Returns the first item in the list that matches the given item.
+ * The result is not always defined if the <code>JComboBox</code>
+ * allows selected items that are not in the list.
+ * Returns -1 if there is no selected item or if the user specified
+ * an item which is not in the list.
+
+ * @return an integer specifying the currently selected list item,
+ * where 0 specifies
+ * the first item in the list;
+ * or -1 if no item is selected or if
+ * the currently selected item is not in the list
+ */
+ public int getSelectedIndex() {
+ Object sObject = dataModel.getSelectedItem();
+ int i,c;
+ Object obj;
+
+ for ( i=0,c=dataModel.getSize();i<c;i++ ) {
+ obj = dataModel.getElementAt(i);
+ if ( obj != null && obj.equals(sObject) )
+ return i;
+ }
+ return -1;
+ }
+
+ /**
+ * Returns the "prototypical display" value - an Object used
+ * for the calculation of the display height and width.
+ *
+ * @return the value of the <code>prototypeDisplayValue</code> property
+ * @see #setPrototypeDisplayValue
+ * @since 1.4
+ */
+ public Object getPrototypeDisplayValue() {
+ return prototypeDisplayValue;
+ }
+
+ /**
+ * Sets the prototype display value used to calculate the size of the display
+ * for the UI portion.
+ * <p>
+ * If a prototype display value is specified, the preferred size of
+ * the combo box is calculated by configuring the renderer with the
+ * prototype display value and obtaining its preferred size. Specifying
+ * the preferred display value is often useful when the combo box will be
+ * displaying large amounts of data. If no prototype display value has
+ * been specified, the renderer must be configured for each value from
+ * the model and its preferred size obtained, which can be
+ * relatively expensive.
+ *
+ * @param prototypeDisplayValue
+ * @see #getPrototypeDisplayValue
+ * @since 1.4
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: The display prototype value, used to compute display width and height.
+ */
+ public void setPrototypeDisplayValue(Object prototypeDisplayValue) {
+ Object oldValue = this.prototypeDisplayValue;
+ this.prototypeDisplayValue = prototypeDisplayValue;
+ firePropertyChange("prototypeDisplayValue", oldValue, prototypeDisplayValue);
+ }
+
+ /**
+ * Adds an item to the item list.
+ * This method works only if the <code>JComboBox</code> uses a
+ * mutable data model.
+ * <p>
+ * <strong>Warning:</strong>
+ * Focus and keyboard navigation problems may arise if you add duplicate
+ * String objects. A workaround is to add new objects instead of String
+ * objects and make sure that the toString() method is defined.
+ * For example:
+ * <pre>
+ * comboBox.addItem(makeObj("Item 1"));
+ * comboBox.addItem(makeObj("Item 1"));
+ * ...
+ * private Object makeObj(final String item) {
+ * return new Object() { public String toString() { return item; } };
+ * }
+ * </pre>
+ *
+ * @param anObject the Object to add to the list
+ * @see MutableComboBoxModel
+ */
+ public void addItem(Object anObject) {
+ checkMutableComboBoxModel();
+ ((MutableComboBoxModel)dataModel).addElement(anObject);
+ }
+
+ /**
+ * Inserts an item into the item list at a given index.
+ * This method works only if the <code>JComboBox</code> uses a
+ * mutable data model.
+ *
+ * @param anObject the <code>Object</code> to add to the list
+ * @param index an integer specifying the position at which
+ * to add the item
+ * @see MutableComboBoxModel
+ */
+ public void insertItemAt(Object anObject, int index) {
+ checkMutableComboBoxModel();
+ ((MutableComboBoxModel)dataModel).insertElementAt(anObject,index);
+ }
+
+ /**
+ * Removes an item from the item list.
+ * This method works only if the <code>JComboBox</code> uses a
+ * mutable data model.
+ *
+ * @param anObject the object to remove from the item list
+ * @see MutableComboBoxModel
+ */
+ public void removeItem(Object anObject) {
+ checkMutableComboBoxModel();
+ ((MutableComboBoxModel)dataModel).removeElement(anObject);
+ }
+
+ /**
+ * Removes the item at <code>anIndex</code>
+ * This method works only if the <code>JComboBox</code> uses a
+ * mutable data model.
+ *
+ * @param anIndex an int specifying the index of the item to remove,
+ * where 0
+ * indicates the first item in the list
+ * @see MutableComboBoxModel
+ */
+ public void removeItemAt(int anIndex) {
+ checkMutableComboBoxModel();
+ ((MutableComboBoxModel)dataModel).removeElementAt( anIndex );
+ }
+
+ /**
+ * Removes all items from the item list.
+ */
+ public void removeAllItems() {
+ checkMutableComboBoxModel();
+ MutableComboBoxModel model = (MutableComboBoxModel)dataModel;
+ int size = model.getSize();
+
+ if ( model instanceof DefaultComboBoxModel ) {
+ ((DefaultComboBoxModel)model).removeAllElements();
+ }
+ else {
+ for ( int i = 0; i < size; ++i ) {
+ Object element = model.getElementAt( 0 );
+ model.removeElement( element );
+ }
+ }
+ selectedItemReminder = null;
+ if (isEditable()) {
+ editor.setItem(null);
+ }
+ }
+
+ /**
+ * Checks that the <code>dataModel</code> is an instance of
+ * <code>MutableComboBoxModel</code>. If not, it throws an exception.
+ * @exception RuntimeException if <code>dataModel</code> is not an
+ * instance of <code>MutableComboBoxModel</code>.
+ */
+ void checkMutableComboBoxModel() {
+ if ( !(dataModel instanceof MutableComboBoxModel) )
+ throw new RuntimeException("Cannot use this method with a non-Mutable data model.");
+ }
+
+ /**
+ * Causes the combo box to display its popup window.
+ * @see #setPopupVisible
+ */
+ public void showPopup() {
+ setPopupVisible(true);
+ }
+
+ /**
+ * Causes the combo box to close its popup window.
+ * @see #setPopupVisible
+ */
+ public void hidePopup() {
+ setPopupVisible(false);
+ }
+
+ /**
+ * Sets the visibility of the popup.
+ */
+ public void setPopupVisible(boolean v) {
+ getUI().setPopupVisible(this, v);
+ }
+
+ /**
+ * Determines the visibility of the popup.
+ *
+ * @return true if the popup is visible, otherwise returns false
+ */
+ public boolean isPopupVisible() {
+ return getUI().isPopupVisible(this);
+ }
+
+ /** Selection **/
+
+ /**
+ * Adds an <code>ItemListener</code>.
+ * <p>
+ * <code>aListener</code> will receive one or two <code>ItemEvent</code>s when
+ * the selected item changes.
+ *
+ * @param aListener the <code>ItemListener</code> that is to be notified
+ * @see #setSelectedItem
+ */
+ public void addItemListener(ItemListener aListener) {
+ listenerList.add(ItemListener.class,aListener);
+ }
+
+ /** Removes an <code>ItemListener</code>.
+ *
+ * @param aListener the <code>ItemListener</code> to remove
+ */
+ public void removeItemListener(ItemListener aListener) {
+ listenerList.remove(ItemListener.class,aListener);
+ }
+
+ /**
+ * Returns an array of all the <code>ItemListener</code>s added
+ * to this JComboBox with addItemListener().
+ *
+ * @return all of the <code>ItemListener</code>s added or an empty
+ * array if no listeners have been added
+ * @since 1.4
+ */
+ public ItemListener[] getItemListeners() {
+ return (ItemListener[])listenerList.getListeners(ItemListener.class);
+ }
+
+ /**
+ * Adds an <code>ActionListener</code>.
+ * <p>
+ * The <code>ActionListener</code> will receive an <code>ActionEvent</code>
+ * when a selection has been made. If the combo box is editable, then
+ * an <code>ActionEvent</code> will be fired when editing has stopped.
+ *
+ * @param l the <code>ActionListener</code> that is to be notified
+ * @see #setSelectedItem
+ */
+ public void addActionListener(ActionListener l) {
+ listenerList.add(ActionListener.class,l);
+ }
+
+ /** Removes an <code>ActionListener</code>.
+ *
+ * @param l the <code>ActionListener</code> to remove
+ */
+ public void removeActionListener(ActionListener l) {
+ if ((l != null) && (getAction() == l)) {
+ setAction(null);
+ } else {
+ listenerList.remove(ActionListener.class, l);
+ }
+ }
+
+ /**
+ * Returns an array of all the <code>ActionListener</code>s added
+ * to this JComboBox with addActionListener().
+ *
+ * @return all of the <code>ActionListener</code>s added or an empty
+ * array if no listeners have been added
+ * @since 1.4
+ */
+ public ActionListener[] getActionListeners() {
+ return (ActionListener[])listenerList.getListeners(
+ ActionListener.class);
+ }
+
+ /**
+ * Adds a <code>PopupMenu</code> listener which will listen to notification
+ * messages from the popup portion of the combo box.
+ * <p>
+ * For all standard look and feels shipped with Java, the popup list
+ * portion of combo box is implemented as a <code>JPopupMenu</code>.
+ * A custom look and feel may not implement it this way and will
+ * therefore not receive the notification.
+ *
+ * @param l the <code>PopupMenuListener</code> to add
+ * @since 1.4
+ */
+ public void addPopupMenuListener(PopupMenuListener l) {
+ listenerList.add(PopupMenuListener.class,l);
+ }
+
+ /**
+ * Removes a <code>PopupMenuListener</code>.
+ *
+ * @param l the <code>PopupMenuListener</code> to remove
+ * @see #addPopupMenuListener
+ * @since 1.4
+ */
+ public void removePopupMenuListener(PopupMenuListener l) {
+ listenerList.remove(PopupMenuListener.class,l);
+ }
+
+ /**
+ * Returns an array of all the <code>PopupMenuListener</code>s added
+ * to this JComboBox with addPopupMenuListener().
+ *
+ * @return all of the <code>PopupMenuListener</code>s added or an empty
+ * array if no listeners have been added
+ * @since 1.4
+ */
+ public PopupMenuListener[] getPopupMenuListeners() {
+ return (PopupMenuListener[])listenerList.getListeners(
+ PopupMenuListener.class);
+ }
+
+ /**
+ * Notifies <code>PopupMenuListener</code>s that the popup portion of the
+ * combo box will become visible.
+ * <p>
+ * This method is public but should not be called by anything other than
+ * the UI delegate.
+ * @see #addPopupMenuListener
+ * @since 1.4
+ */
+ public void firePopupMenuWillBecomeVisible() {
+ Object[] listeners = listenerList.getListenerList();
+ PopupMenuEvent e=null;
+ for (int i = listeners.length-2; i>=0; i-=2) {
+ if (listeners[i]==PopupMenuListener.class) {
+ if (e == null)
+ e = new PopupMenuEvent(this);
+ ((PopupMenuListener)listeners[i+1]).popupMenuWillBecomeVisible(e);
+ }
+ }
+ }
+
+ /**
+ * Notifies <code>PopupMenuListener</code>s that the popup portion of the
+ * combo box has become invisible.
+ * <p>
+ * This method is public but should not be called by anything other than
+ * the UI delegate.
+ * @see #addPopupMenuListener
+ * @since 1.4
+ */
+ public void firePopupMenuWillBecomeInvisible() {
+ Object[] listeners = listenerList.getListenerList();
+ PopupMenuEvent e=null;
+ for (int i = listeners.length-2; i>=0; i-=2) {
+ if (listeners[i]==PopupMenuListener.class) {
+ if (e == null)
+ e = new PopupMenuEvent(this);
+ ((PopupMenuListener)listeners[i+1]).popupMenuWillBecomeInvisible(e);
+ }
+ }
+ }
+
+ /**
+ * Notifies <code>PopupMenuListener</code>s that the popup portion of the
+ * combo box has been canceled.
+ * <p>
+ * This method is public but should not be called by anything other than
+ * the UI delegate.
+ * @see #addPopupMenuListener
+ * @since 1.4
+ */
+ public void firePopupMenuCanceled() {
+ Object[] listeners = listenerList.getListenerList();
+ PopupMenuEvent e=null;
+ for (int i = listeners.length-2; i>=0; i-=2) {
+ if (listeners[i]==PopupMenuListener.class) {
+ if (e == null)
+ e = new PopupMenuEvent(this);
+ ((PopupMenuListener)listeners[i+1]).popupMenuCanceled(e);
+ }
+ }
+ }
+
+ /**
+ * Sets the action command that should be included in the event
+ * sent to action listeners.
+ *
+ * @param aCommand a string containing the "command" that is sent
+ * to action listeners; the same listener can then
+ * do different things depending on the command it
+ * receives
+ */
+ public void setActionCommand(String aCommand) {
+ actionCommand = aCommand;
+ }
+
+ /**
+ * Returns the action command that is included in the event sent to
+ * action listeners.
+ *
+ * @return the string containing the "command" that is sent
+ * to action listeners.
+ */
+ public String getActionCommand() {
+ return actionCommand;
+ }
+
+ private Action action;
+ private PropertyChangeListener actionPropertyChangeListener;
+
+ /**
+ * Sets the <code>Action</code> for the <code>ActionEvent</code> source.
+ * The new <code>Action</code> replaces any previously set
+ * <code>Action</code> but does not affect <code>ActionListeners</code>
+ * independently added with <code>addActionListener</code>.
+ * If the <code>Action</code> is already a registered
+ * <code>ActionListener</code> for the <code>ActionEvent</code> source,
+ * it is not re-registered.
+ * <p>
+ * Setting the <code>Action</code> results in immediately changing
+ * all the properties described in <a href="Action.html#buttonActions">
+ * Swing Components Supporting <code>Action</code></a>.
+ * Subsequently, the combobox's properties are automatically updated
+ * as the <code>Action</code>'s properties change.
+ * <p>
+ * This method uses three other methods to set
+ * and help track the <code>Action</code>'s property values.
+ * It uses the <code>configurePropertiesFromAction</code> method
+ * to immediately change the combobox's properties.
+ * To track changes in the <code>Action</code>'s property values,
+ * this method registers the <code>PropertyChangeListener</code>
+ * returned by <code>createActionPropertyChangeListener</code>. The
+ * default {@code PropertyChangeListener} invokes the
+ * {@code actionPropertyChanged} method when a property in the
+ * {@code Action} changes.
+ *
+ * @param a the <code>Action</code> for the <code>JComboBox</code>,
+ * or <code>null</code>.
+ * @since 1.3
+ * @see Action
+ * @see #getAction
+ * @see #configurePropertiesFromAction
+ * @see #createActionPropertyChangeListener
+ * @see #actionPropertyChanged
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: the Action instance connected with this ActionEvent source
+ */
+ public void setAction(Action a) {
+ Action oldValue = getAction();
+ if (action==null || !action.equals(a)) {
+ action = a;
+ if (oldValue!=null) {
+ removeActionListener(oldValue);
+ oldValue.removePropertyChangeListener(actionPropertyChangeListener);
+ actionPropertyChangeListener = null;
+ }
+ configurePropertiesFromAction(action);
+ if (action!=null) {
+ // Don't add if it is already a listener
+ if (!isListener(ActionListener.class, action)) {
+ addActionListener(action);
+ }
+ // Reverse linkage:
+ actionPropertyChangeListener = createActionPropertyChangeListener(action);
+ action.addPropertyChangeListener(actionPropertyChangeListener);
+ }
+ firePropertyChange("action", oldValue, action);
+ }
+ }
+
+ private boolean isListener(Class c, ActionListener a) {
+ boolean isListener = false;
+ Object[] listeners = listenerList.getListenerList();
+ for (int i = listeners.length-2; i>=0; i-=2) {
+ if (listeners[i]==c && listeners[i+1]==a) {
+ isListener=true;
+ }
+ }
+ return isListener;
+ }
+
+ /**
+ * Returns the currently set <code>Action</code> for this
+ * <code>ActionEvent</code> source, or <code>null</code> if no
+ * <code>Action</code> is set.
+ *
+ * @return the <code>Action</code> for this <code>ActionEvent</code>
+ * source; or <code>null</code>
+ * @since 1.3
+ * @see Action
+ * @see #setAction
+ */
+ public Action getAction() {
+ return action;
+ }
+
+ /**
+ * Sets the properties on this combobox to match those in the specified
+ * <code>Action</code>. Refer to <a href="Action.html#buttonActions">
+ * Swing Components Supporting <code>Action</code></a> for more
+ * details as to which properties this sets.
+ *
+ * @param a the <code>Action</code> from which to get the properties,
+ * or <code>null</code>
+ * @since 1.3
+ * @see Action
+ * @see #setAction
+ */
+ protected void configurePropertiesFromAction(Action a) {
+ AbstractAction.setEnabledFromAction(this, a);
+ AbstractAction.setToolTipTextFromAction(this, a);
+ setActionCommandFromAction(a);
+ }
+
+ /**
+ * Creates and returns a <code>PropertyChangeListener</code> that is
+ * responsible for listening for changes from the specified
+ * <code>Action</code> and updating the appropriate properties.
+ * <p>
+ * <b>Warning:</b> If you subclass this do not create an anonymous
+ * inner class. If you do the lifetime of the combobox will be tied to
+ * that of the <code>Action</code>.
+ *
+ * @param a the combobox's action
+ * @since 1.3
+ * @see Action
+ * @see #setAction
+ */
+ protected PropertyChangeListener createActionPropertyChangeListener(Action a) {
+ return new ComboBoxActionPropertyChangeListener(this, a);
+ }
+
+ /**
+ * Updates the combobox's state in response to property changes in
+ * associated action. This method is invoked from the
+ * {@code PropertyChangeListener} returned from
+ * {@code createActionPropertyChangeListener}. Subclasses do not normally
+ * need to invoke this. Subclasses that support additional {@code Action}
+ * properties should override this and
+ * {@code configurePropertiesFromAction}.
+ * <p>
+ * Refer to the table at <a href="Action.html#buttonActions">
+ * Swing Components Supporting <code>Action</code></a> for a list of
+ * the properties this method sets.
+ *
+ * @param action the <code>Action</code> associated with this combobox
+ * @param propertyName the name of the property that changed
+ * @since 1.6
+ * @see Action
+ * @see #configurePropertiesFromAction
+ */
+ protected void actionPropertyChanged(Action action, String propertyName) {
+ if (propertyName == Action.ACTION_COMMAND_KEY) {
+ setActionCommandFromAction(action);
+ } else if (propertyName == "enabled") {
+ AbstractAction.setEnabledFromAction(this, action);
+ } else if (Action.SHORT_DESCRIPTION == propertyName) {
+ AbstractAction.setToolTipTextFromAction(this, action);
+ }
+ }
+
+ private void setActionCommandFromAction(Action a) {
+ setActionCommand((a != null) ?
+ (String)a.getValue(Action.ACTION_COMMAND_KEY) :
+ null);
+ }
+
+
+ private static class ComboBoxActionPropertyChangeListener
+ extends ActionPropertyChangeListener<JComboBox> {
+ ComboBoxActionPropertyChangeListener(JComboBox b, Action a) {
+ super(b, a);
+ }
+ protected void actionPropertyChanged(JComboBox cb,
+ Action action,
+ PropertyChangeEvent e) {
+ if (AbstractAction.shouldReconfigure(e)) {
+ cb.configurePropertiesFromAction(action);
+ } else {
+ cb.actionPropertyChanged(action, e.getPropertyName());
+ }
+ }
+ }
+
+ /**
+ * Notifies all listeners that have registered interest for
+ * notification on this event type.
+ * @param e the event of interest
+ *
+ * @see EventListenerList
+ */
+ protected void fireItemStateChanged(ItemEvent e) {
+ // Guaranteed to return a non-null array
+ Object[] listeners = listenerList.getListenerList();
+ // Process the listeners last to first, notifying
+ // those that are interested in this event
+ for ( int i = listeners.length-2; i>=0; i-=2 ) {
+ if ( listeners[i]==ItemListener.class ) {
+ // Lazily create the event:
+ // if (changeEvent == null)
+ // changeEvent = new ChangeEvent(this);
+ ((ItemListener)listeners[i+1]).itemStateChanged(e);
+ }
+ }
+ }
+
+ /**
+ * Notifies all listeners that have registered interest for
+ * notification on this event type.
+ *
+ * @see EventListenerList
+ */
+ protected void fireActionEvent() {
+ if (!firingActionEvent) {
+ // Set flag to ensure that an infinite loop is not created
+ firingActionEvent = true;
+ ActionEvent e = null;
+ // Guaranteed to return a non-null array
+ Object[] listeners = listenerList.getListenerList();
+ long mostRecentEventTime = EventQueue.getMostRecentEventTime();
+ int modifiers = 0;
+ AWTEvent currentEvent = EventQueue.getCurrentEvent();
+ if (currentEvent instanceof InputEvent) {
+ modifiers = ((InputEvent)currentEvent).getModifiers();
+ } else if (currentEvent instanceof ActionEvent) {
+ modifiers = ((ActionEvent)currentEvent).getModifiers();
+ }
+ // Process the listeners last to first, notifying
+ // those that are interested in this event
+ for ( int i = listeners.length-2; i>=0; i-=2 ) {
+ if ( listeners[i]==ActionListener.class ) {
+ // Lazily create the event:
+ if ( e == null )
+ e = new ActionEvent(this,ActionEvent.ACTION_PERFORMED,
+ getActionCommand(),
+ mostRecentEventTime, modifiers);
+ ((ActionListener)listeners[i+1]).actionPerformed(e);
+ }
+ }
+ firingActionEvent = false;
+ }
+ }
+
+ /**
+ * This protected method is implementation specific. Do not access directly
+ * or override.
+ */
+ protected void selectedItemChanged() {
+ if (selectedItemReminder != null ) {
+ fireItemStateChanged(new ItemEvent(this,ItemEvent.ITEM_STATE_CHANGED,
+ selectedItemReminder,
+ ItemEvent.DESELECTED));
+ }
+
+ // set the new selected item.
+ selectedItemReminder = dataModel.getSelectedItem();
+
+ if (selectedItemReminder != null ) {
+ fireItemStateChanged(new ItemEvent(this,ItemEvent.ITEM_STATE_CHANGED,
+ selectedItemReminder,
+ ItemEvent.SELECTED));
+ }
+ }
+
+ /**
+ * Returns an array containing the selected item.
+ * This method is implemented for compatibility with
+ * <code>ItemSelectable</code>.
+ *
+ * @return an array of <code>Objects</code> containing one
+ * element -- the selected item
+ */
+ public Object[] getSelectedObjects() {
+ Object selectedObject = getSelectedItem();
+ if ( selectedObject == null )
+ return new Object[0];
+ else {
+ Object result[] = new Object[1];
+ result[0] = selectedObject;
+ return result;
+ }
+ }
+
+ /**
+ * This method is public as an implementation side effect.
+ * do not call or override.
+ */
+ public void actionPerformed(ActionEvent e) {
+ Object newItem = getEditor().getItem();
+ setPopupVisible(false);
+ getModel().setSelectedItem(newItem);
+ String oldCommand = getActionCommand();
+ setActionCommand("comboBoxEdited");
+ fireActionEvent();
+ setActionCommand(oldCommand);
+ }
+
+ /**
+ * This method is public as an implementation side effect.
+ * do not call or override.
+ */
+ public void contentsChanged(ListDataEvent e) {
+ Object oldSelection = selectedItemReminder;
+ Object newSelection = dataModel.getSelectedItem();
+ if (oldSelection == null || !oldSelection.equals(newSelection)) {
+ selectedItemChanged();
+ if (!selectingItem) {
+ fireActionEvent();
+ }
+ }
+ }
+
+ /**
+ * This method is public as an implementation side effect.
+ * do not call or override.
+ */
+ public void intervalAdded(ListDataEvent e) {
+ if (selectedItemReminder != dataModel.getSelectedItem()) {
+ selectedItemChanged();
+ }
+ }
+
+ /**
+ * This method is public as an implementation side effect.
+ * do not call or override.
+ */
+ public void intervalRemoved(ListDataEvent e) {
+ contentsChanged(e);
+ }
+
+ /**
+ * Selects the list item that corresponds to the specified keyboard
+ * character and returns true, if there is an item corresponding
+ * to that character. Otherwise, returns false.
+ *
+ * @param keyChar a char, typically this is a keyboard key
+ * typed by the user
+ */
+ public boolean selectWithKeyChar(char keyChar) {
+ int index;
+
+ if ( keySelectionManager == null )
+ keySelectionManager = createDefaultKeySelectionManager();
+
+ index = keySelectionManager.selectionForKey(keyChar,getModel());
+ if ( index != -1 ) {
+ setSelectedIndex(index);
+ return true;
+ }
+ else
+ return false;
+ }
+
+ /**
+ * Enables the combo box so that items can be selected. When the
+ * combo box is disabled, items cannot be selected and values
+ * cannot be typed into its field (if it is editable).
+ *
+ * @param b a boolean value, where true enables the component and
+ * false disables it
+ * @beaninfo
+ * bound: true
+ * preferred: true
+ * description: Whether the combo box is enabled.
+ */
+ public void setEnabled(boolean b) {
+ super.setEnabled(b);
+ firePropertyChange( "enabled", !isEnabled(), isEnabled() );
+ }
+
+ /**
+ * Initializes the editor with the specified item.
+ *
+ * @param anEditor the <code>ComboBoxEditor</code> that displays
+ * the list item in the
+ * combo box field and allows it to be edited
+ * @param anItem the object to display and edit in the field
+ */
+ public void configureEditor(ComboBoxEditor anEditor, Object anItem) {
+ anEditor.setItem(anItem);
+ }
+
+ /**
+ * Handles <code>KeyEvent</code>s, looking for the Tab key.
+ * If the Tab key is found, the popup window is closed.
+ *
+ * @param e the <code>KeyEvent</code> containing the keyboard
+ * key that was pressed
+ */
+ public void processKeyEvent(KeyEvent e) {
+ if ( e.getKeyCode() == KeyEvent.VK_TAB ) {
+ hidePopup();
+ }
+ super.processKeyEvent(e);
+ }
+
+ /**
+ * Sets the object that translates a keyboard character into a list
+ * selection. Typically, the first selection with a matching first
+ * character becomes the selected item.
+ *
+ * @beaninfo
+ * expert: true
+ * description: The objects that changes the selection when a key is pressed.
+ */
+ public void setKeySelectionManager(KeySelectionManager aManager) {
+ keySelectionManager = aManager;
+ }
+
+ /**
+ * Returns the list's key-selection manager.
+ *
+ * @return the <code>KeySelectionManager</code> currently in use
+ */
+ public KeySelectionManager getKeySelectionManager() {
+ return keySelectionManager;
+ }
+
+ /* Accessing the model */
+ /**
+ * Returns the number of items in the list.
+ *
+ * @return an integer equal to the number of items in the list
+ */
+ public int getItemCount() {
+ return dataModel.getSize();
+ }
+
+ /**
+ * Returns the list item at the specified index. If <code>index</code>
+ * is out of range (less than zero or greater than or equal to size)
+ * it will return <code>null</code>.
+ *
+ * @param index an integer indicating the list position, where the first
+ * item starts at zero
+ * @return the <code>Object</code> at that list position; or
+ * <code>null</code> if out of range
+ */
+ public Object getItemAt(int index) {
+ return dataModel.getElementAt(index);
+ }
+
+ /**
+ * Returns an instance of the default key-selection manager.
+ *
+ * @return the <code>KeySelectionManager</code> currently used by the list
+ * @see #setKeySelectionManager
+ */
+ protected KeySelectionManager createDefaultKeySelectionManager() {
+ return new DefaultKeySelectionManager();
+ }
+
+
+ /**
+ * The interface that defines a <code>KeySelectionManager</code>.
+ * To qualify as a <code>KeySelectionManager</code>,
+ * the class needs to implement the method
+ * that identifies the list index given a character and the
+ * combo box data model.
+ */
+ public interface KeySelectionManager {
+ /** Given <code>aKey</code> and the model, returns the row
+ * that should become selected. Return -1 if no match was
+ * found.
+ *
+ * @param aKey a char value, usually indicating a keyboard key that
+ * was pressed
+ * @param aModel a ComboBoxModel -- the component's data model, containing
+ * the list of selectable items
+ * @return an int equal to the selected row, where 0 is the
+ * first item and -1 is none.
+ */
+ int selectionForKey(char aKey,ComboBoxModel aModel);
+ }
+
+ class DefaultKeySelectionManager implements KeySelectionManager, Serializable {
+ public int selectionForKey(char aKey,ComboBoxModel aModel) {
+ int i,c;
+ int currentSelection = -1;
+ Object selectedItem = aModel.getSelectedItem();
+ String v;
+ String pattern;
+
+ if ( selectedItem != null ) {
+ for ( i=0,c=aModel.getSize();i<c;i++ ) {
+ if ( selectedItem == aModel.getElementAt(i) ) {
+ currentSelection = i;
+ break;
+ }
+ }
+ }
+
+ pattern = ("" + aKey).toLowerCase();
+ aKey = pattern.charAt(0);
+
+ for ( i = ++currentSelection, c = aModel.getSize() ; i < c ; i++ ) {
+ Object elem = aModel.getElementAt(i);
+ if (elem != null && elem.toString() != null) {
+ v = elem.toString().toLowerCase();
+ if ( v.length() > 0 && v.charAt(0) == aKey )
+ return i;
+ }
+ }
+
+ for ( i = 0 ; i < currentSelection ; i ++ ) {
+ Object elem = aModel.getElementAt(i);
+ if (elem != null && elem.toString() != null) {
+ v = elem.toString().toLowerCase();
+ if ( v.length() > 0 && v.charAt(0) == aKey )
+ return i;
+ }
+ }
+ return -1;
+ }
+ }
+
+
+ /**
+ * See <code>readObject</code> and <code>writeObject</code> in
+ * <code>JComponent</code> for more
+ * information about serialization in Swing.
+ */
+ private void writeObject(ObjectOutputStream s) throws IOException {
+ s.defaultWriteObject();
+ if (getUIClassID().equals(uiClassID)) {
+ byte count = JComponent.getWriteObjCounter(this);
+ JComponent.setWriteObjCounter(this, --count);
+ if (count == 0 && ui != null) {
+ ui.installUI(this);
+ }
+ }
+ }
+
+
+ /**
+ * Returns a string representation of this <code>JComboBox</code>.
+ * This method is intended to be used only for debugging purposes,
+ * and the content and format of the returned string may vary between
+ * implementations. The returned string may be empty but may not
+ * be <code>null</code>.
+ *
+ * @return a string representation of this <code>JComboBox</code>
+ */
+ protected String paramString() {
+ String selectedItemReminderString = (selectedItemReminder != null ?
+ selectedItemReminder.toString() :
+ "");
+ String isEditableString = (isEditable ? "true" : "false");
+ String lightWeightPopupEnabledString = (lightWeightPopupEnabled ?
+ "true" : "false");
+
+ return super.paramString() +
+ ",isEditable=" + isEditableString +
+ ",lightWeightPopupEnabled=" + lightWeightPopupEnabledString +
+ ",maximumRowCount=" + maximumRowCount +
+ ",selectedItemReminder=" + selectedItemReminderString;
+ }
+
+
+///////////////////
+// Accessibility support
+///////////////////
+
+ /**
+ * Gets the AccessibleContext associated with this JComboBox.
+ * For combo boxes, the AccessibleContext takes the form of an
+ * AccessibleJComboBox.
+ * A new AccessibleJComboBox instance is created if necessary.
+ *
+ * @return an AccessibleJComboBox that serves as the
+ * AccessibleContext of this JComboBox
+ */
+ public AccessibleContext getAccessibleContext() {
+ if ( accessibleContext == null ) {
+ accessibleContext = new AccessibleJComboBox();
+ }
+ return accessibleContext;
+ }
+
+ /**
+ * This class implements accessibility support for the
+ * <code>JComboBox</code> class. It provides an implementation of the
+ * Java Accessibility API appropriate to Combo Box user-interface elements.
+ * <p>
+ * <strong>Warning:</strong>
+ * Serialized objects of this class will not be compatible with
+ * future Swing releases. The current serialization support is
+ * appropriate for short term storage or RMI between applications running
+ * the same version of Swing. As of 1.4, support for long term storage
+ * of all JavaBeans<sup><font size="-2">TM</font></sup>
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ */
+ protected class AccessibleJComboBox extends AccessibleJComponent
+ implements AccessibleAction, AccessibleSelection {
+
+
+ private JList popupList; // combo box popup list
+ private Accessible previousSelectedAccessible = null;
+
+ /**
+ * Returns an AccessibleJComboBox instance
+ * @since 1.4
+ */
+ public AccessibleJComboBox() {
+ // set the combo box editor's accessible name and description
+ JComboBox.this.addPropertyChangeListener(new AccessibleJComboBoxPropertyChangeListener());
+ setEditorNameAndDescription();
+
+ // Get the popup list
+ Accessible a = getUI().getAccessibleChild(JComboBox.this, 0);
+ if (a instanceof javax.swing.plaf.basic.ComboPopup) {
+ // Listen for changes to the popup menu selection.
+ popupList = ((javax.swing.plaf.basic.ComboPopup)a).getList();
+ popupList.addListSelectionListener(
+ new AccessibleJComboBoxListSelectionListener());
+ }
+ // Listen for popup menu show/hide events
+ JComboBox.this.addPopupMenuListener(
+ new AccessibleJComboBoxPopupMenuListener());
+ }
+
+ /*
+ * JComboBox PropertyChangeListener
+ */
+ private class AccessibleJComboBoxPropertyChangeListener
+ implements PropertyChangeListener {
+
+ public void propertyChange(PropertyChangeEvent e) {
+ if (e.getPropertyName() == "editor") {
+ // set the combo box editor's accessible name
+ // and description
+ setEditorNameAndDescription();
+ }
+ }
+ }
+
+ /*
+ * Sets the combo box editor's accessible name and descripton
+ */
+ private void setEditorNameAndDescription() {
+ ComboBoxEditor editor = JComboBox.this.getEditor();
+ if (editor != null) {
+ Component comp = editor.getEditorComponent();
+ if (comp instanceof Accessible) {
+ AccessibleContext ac = ((Accessible)comp).getAccessibleContext();
+ if (ac != null) { // may be null
+ ac.setAccessibleName(getAccessibleName());
+ ac.setAccessibleDescription(getAccessibleDescription());
+ }
+ }
+ }
+ }
+
+ /*
+ * Listener for combo box popup menu
+ * TIGER - 4669379 4894434
+ */
+ private class AccessibleJComboBoxPopupMenuListener
+ implements PopupMenuListener {
+
+ /**
+ * This method is called before the popup menu becomes visible
+ */
+ public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
+ // save the initial selection
+ if (popupList == null) {
+ return;
+ }
+ int selectedIndex = popupList.getSelectedIndex();
+ if (selectedIndex < 0) {
+ return;
+ }
+ previousSelectedAccessible =
+ popupList.getAccessibleContext().getAccessibleChild(selectedIndex);
+ }
+
+ /**
+ * This method is called before the popup menu becomes invisible
+ * Note that a JPopupMenu can become invisible any time
+ */
+ public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
+ // ignore
+ }
+
+ /**
+ * This method is called when the popup menu is canceled
+ */
+ public void popupMenuCanceled(PopupMenuEvent e) {
+ // ignore
+ }
+ }
+
+ /*
+ * Handles changes to the popup list selection.
+ * TIGER - 4669379 4894434 4933143
+ */
+ private class AccessibleJComboBoxListSelectionListener
+ implements ListSelectionListener {
+
+ public void valueChanged(ListSelectionEvent e) {
+ if (popupList == null) {
+ return;
+ }
+
+ // Get the selected popup list item.
+ int selectedIndex = popupList.getSelectedIndex();
+ if (selectedIndex < 0) {
+ return;
+ }
+ Accessible selectedAccessible =
+ popupList.getAccessibleContext().getAccessibleChild(selectedIndex);
+ if (selectedAccessible == null) {
+ return;
+ }
+
+ // Fire a FOCUSED lost PropertyChangeEvent for the
+ // previously selected list item.
+ PropertyChangeEvent pce = null;
+
+ if (previousSelectedAccessible != null) {
+ pce = new PropertyChangeEvent(previousSelectedAccessible,
+ AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
+ AccessibleState.FOCUSED, null);
+ firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
+ null, pce);
+ }
+ // Fire a FOCUSED gained PropertyChangeEvent for the
+ // currently selected list item.
+ pce = new PropertyChangeEvent(selectedAccessible,
+ AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
+ null, AccessibleState.FOCUSED);
+ firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
+ null, pce);
+
+ // Fire the ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY event
+ // for the combo box.
+ firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY,
+ previousSelectedAccessible, selectedAccessible);
+
+ // Save the previous selection.
+ previousSelectedAccessible = selectedAccessible;
+ }
+ }
+
+
+ /**
+ * Returns the number of accessible children in the object. If all
+ * of the children of this object implement Accessible, than this
+ * method should return the number of children of this object.
+ *
+ * @return the number of accessible children in the object.
+ */
+ public int getAccessibleChildrenCount() {
+ // Always delegate to the UI if it exists
+ if (ui != null) {
+ return ui.getAccessibleChildrenCount(JComboBox.this);
+ } else {
+ return super.getAccessibleChildrenCount();
+ }
+ }
+
+ /**
+ * Returns the nth Accessible child of the object.
+ * The child at index zero represents the popup.
+ * If the combo box is editable, the child at index one
+ * represents the editor.
+ *
+ * @param i zero-based index of child
+ * @return the nth Accessible child of the object
+ */
+ public Accessible getAccessibleChild(int i) {
+ // Always delegate to the UI if it exists
+ if (ui != null) {
+ return ui.getAccessibleChild(JComboBox.this, i);
+ } else {
+ return super.getAccessibleChild(i);
+ }
+ }
+
+ /**
+ * Get the role of this object.
+ *
+ * @return an instance of AccessibleRole describing the role of the
+ * object
+ * @see AccessibleRole
+ */
+ public AccessibleRole getAccessibleRole() {
+ return AccessibleRole.COMBO_BOX;
+ }
+
+ /**
+ * Gets the state set of this object. The AccessibleStateSet of
+ * an object is composed of a set of unique AccessibleStates.
+ * A change in the AccessibleStateSet of an object will cause a
+ * PropertyChangeEvent to be fired for the ACCESSIBLE_STATE_PROPERTY
+ * property.
+ *
+ * @return an instance of AccessibleStateSet containing the
+ * current state set of the object
+ * @see AccessibleStateSet
+ * @see AccessibleState
+ * @see #addPropertyChangeListener
+ *
+ */
+ public AccessibleStateSet getAccessibleStateSet() {
+ // TIGER - 4489748
+ AccessibleStateSet ass = super.getAccessibleStateSet();
+ if (ass == null) {
+ ass = new AccessibleStateSet();
+ }
+ if (JComboBox.this.isPopupVisible()) {
+ ass.add(AccessibleState.EXPANDED);
+ } else {
+ ass.add(AccessibleState.COLLAPSED);
+ }
+ return ass;
+ }
+
+ /**
+ * Get the AccessibleAction associated with this object. In the
+ * implementation of the Java Accessibility API for this class,
+ * return this object, which is responsible for implementing the
+ * AccessibleAction interface on behalf of itself.
+ *
+ * @return this object
+ */
+ public AccessibleAction getAccessibleAction() {
+ return this;
+ }
+
+ /**
+ * Return a description of the specified action of the object.
+ *
+ * @param i zero-based index of the actions
+ */
+ public String getAccessibleActionDescription(int i) {
+ if (i == 0) {
+ return UIManager.getString("ComboBox.togglePopupText");
+ }
+ else {
+ return null;
+ }
+ }
+
+ /**
+ * Returns the number of Actions available in this object. The
+ * default behavior of a combo box is to have one action.
+ *
+ * @return 1, the number of Actions in this object
+ */
+ public int getAccessibleActionCount() {
+ return 1;
+ }
+
+ /**
+ * Perform the specified Action on the object
+ *
+ * @param i zero-based index of actions
+ * @return true if the the action was performed; else false.
+ */
+ public boolean doAccessibleAction(int i) {
+ if (i == 0) {
+ setPopupVisible(!isPopupVisible());
+ return true;
+ }
+ else {
+ return false;
+ }
+ }
+
+
+ /**
+ * Get the AccessibleSelection associated with this object. In the
+ * implementation of the Java Accessibility API for this class,
+ * return this object, which is responsible for implementing the
+ * AccessibleSelection interface on behalf of itself.
+ *
+ * @return this object
+ */
+ public AccessibleSelection getAccessibleSelection() {
+ return this;
+ }
+
+ /**
+ * Returns the number of Accessible children currently selected.
+ * If no children are selected, the return value will be 0.
+ *
+ * @return the number of items currently selected.
+ * @since 1.3
+ */
+ public int getAccessibleSelectionCount() {
+ Object o = JComboBox.this.getSelectedItem();
+ if (o != null) {
+ return 1;
+ } else {
+ return 0;
+ }
+ }
+
+ /**
+ * Returns an Accessible representing the specified selected child
+ * in the popup. If there isn't a selection, or there are
+ * fewer children selected than the integer passed in, the return
+ * value will be null.
+ * <p>Note that the index represents the i-th selected child, which
+ * is different from the i-th child.
+ *
+ * @param i the zero-based index of selected children
+ * @return the i-th selected child
+ * @see #getAccessibleSelectionCount
+ * @since 1.3
+ */
+ public Accessible getAccessibleSelection(int i) {
+ // Get the popup
+ Accessible a =
+ JComboBox.this.getUI().getAccessibleChild(JComboBox.this, 0);
+ if (a != null &&
+ a instanceof javax.swing.plaf.basic.ComboPopup) {
+
+ // get the popup list
+ JList list = ((javax.swing.plaf.basic.ComboPopup)a).getList();
+
+ // return the i-th selection in the popup list
+ AccessibleContext ac = list.getAccessibleContext();
+ if (ac != null) {
+ AccessibleSelection as = ac.getAccessibleSelection();
+ if (as != null) {
+ return as.getAccessibleSelection(i);
+ }
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Determines if the current child of this object is selected.
+ *
+ * @return true if the current child of this object is selected;
+ * else false
+ * @param i the zero-based index of the child in this Accessible
+ * object.
+ * @see AccessibleContext#getAccessibleChild
+ * @since 1.3
+ */
+ public boolean isAccessibleChildSelected(int i) {
+ return JComboBox.this.getSelectedIndex() == i;
+ }
+
+ /**
+ * Adds the specified Accessible child of the object to the object's
+ * selection. If the object supports multiple selections,
+ * the specified child is added to any existing selection, otherwise
+ * it replaces any existing selection in the object. If the
+ * specified child is already selected, this method has no effect.
+ *
+ * @param i the zero-based index of the child
+ * @see AccessibleContext#getAccessibleChild
+ * @since 1.3
+ */
+ public void addAccessibleSelection(int i) {
+ // TIGER - 4856195
+ clearAccessibleSelection();
+ JComboBox.this.setSelectedIndex(i);
+ }
+
+ /**
+ * Removes the specified child of the object from the object's
+ * selection. If the specified item isn't currently selected, this
+ * method has no effect.
+ *
+ * @param i the zero-based index of the child
+ * @see AccessibleContext#getAccessibleChild
+ * @since 1.3
+ */
+ public void removeAccessibleSelection(int i) {
+ if (JComboBox.this.getSelectedIndex() == i) {
+ clearAccessibleSelection();
+ }
+ }
+
+ /**
+ * Clears the selection in the object, so that no children in the
+ * object are selected.
+ * @since 1.3
+ */
+ public void clearAccessibleSelection() {
+ JComboBox.this.setSelectedIndex(-1);
+ }
+
+ /**
+ * Causes every child of the object to be selected
+ * if the object supports multiple selections.
+ * @since 1.3
+ */
+ public void selectAllAccessibleSelection() {
+ // do nothing since multiple selection is not supported
+ }
+
+// public Accessible getAccessibleAt(Point p) {
+// Accessible a = getAccessibleChild(1);
+// if ( a != null ) {
+// return a; // the editor
+// }
+// else {
+// return getAccessibleChild(0); // the list
+// }
+// }
+ private EditorAccessibleContext editorAccessibleContext = null;
+
+ private class AccessibleEditor implements Accessible {
+ public AccessibleContext getAccessibleContext() {
+ if (editorAccessibleContext == null) {
+ Component c = JComboBox.this.getEditor().getEditorComponent();
+ if (c instanceof Accessible) {
+ editorAccessibleContext =
+ new EditorAccessibleContext((Accessible)c);
+ }
+ }
+ return editorAccessibleContext;
+ }
+ }
+
+ /*
+ * Wrapper class for the AccessibleContext implemented by the
+ * combo box editor. Delegates all method calls except
+ * getAccessibleIndexInParent to the editor. The
+ * getAccessibleIndexInParent method returns the selected
+ * index in the combo box.
+ */
+ private class EditorAccessibleContext extends AccessibleContext {
+
+ private AccessibleContext ac;
+
+ private EditorAccessibleContext() {
+ }
+
+ /*
+ * @param a the AccessibleContext implemented by the
+ * combo box editor
+ */
+ EditorAccessibleContext(Accessible a) {
+ this.ac = a.getAccessibleContext();
+ }
+
+ /**
+ * Gets the accessibleName property of this object. The accessibleName
+ * property of an object is a localized String that designates the purpose
+ * of the object. For example, the accessibleName property of a label
+ * or button might be the text of the label or button itself. In the
+ * case of an object that doesn't display its name, the accessibleName
+ * should still be set. For example, in the case of a text field used
+ * to enter the name of a city, the accessibleName for the en_US locale
+ * could be 'city.'
+ *
+ * @return the localized name of the object; null if this
+ * object does not have a name
+ *
+ * @see #setAccessibleName
+ */
+ public String getAccessibleName() {
+ return ac.getAccessibleName();
+ }
+
+ /**
+ * Sets the localized accessible name of this object. Changing the
+ * name will cause a PropertyChangeEvent to be fired for the
+ * ACCESSIBLE_NAME_PROPERTY property.
+ *
+ * @param s the new localized name of the object.
+ *
+ * @see #getAccessibleName
+ * @see #addPropertyChangeListener
+ *
+ * @beaninfo
+ * preferred: true
+ * description: Sets the accessible name for the component.
+ */
+ public void setAccessibleName(String s) {
+ ac.setAccessibleName(s);
+ }
+
+ /**
+ * Gets the accessibleDescription property of this object. The
+ * accessibleDescription property of this object is a short localized
+ * phrase describing the purpose of the object. For example, in the
+ * case of a 'Cancel' button, the accessibleDescription could be
+ * 'Ignore changes and close dialog box.'
+ *
+ * @return the localized description of the object; null if
+ * this object does not have a description
+ *
+ * @see #setAccessibleDescription
+ */
+ public String getAccessibleDescription() {
+ return ac.getAccessibleDescription();
+ }
+
+ /**
+ * Sets the accessible description of this object. Changing the
+ * name will cause a PropertyChangeEvent to be fired for the
+ * ACCESSIBLE_DESCRIPTION_PROPERTY property.
+ *
+ * @param s the new localized description of the object
+ *
+ * @see #setAccessibleName
+ * @see #addPropertyChangeListener
+ *
+ * @beaninfo
+ * preferred: true
+ * description: Sets the accessible description for the component.
+ */
+ public void setAccessibleDescription(String s) {
+ ac.setAccessibleDescription(s);
+ }
+
+ /**
+ * Gets the role of this object. The role of the object is the generic
+ * purpose or use of the class of this object. For example, the role
+ * of a push button is AccessibleRole.PUSH_BUTTON. The roles in
+ * AccessibleRole are provided so component developers can pick from
+ * a set of predefined roles. This enables assistive technologies to
+ * provide a consistent interface to various tweaked subclasses of
+ * components (e.g., use AccessibleRole.PUSH_BUTTON for all components
+ * that act like a push button) as well as distinguish between sublasses
+ * that behave differently (e.g., AccessibleRole.CHECK_BOX for check boxes
+ * and AccessibleRole.RADIO_BUTTON for radio buttons).
+ * <p>Note that the AccessibleRole class is also extensible, so
+ * custom component developers can define their own AccessibleRole's
+ * if the set of predefined roles is inadequate.
+ *
+ * @return an instance of AccessibleRole describing the role of the object
+ * @see AccessibleRole
+ */
+ public AccessibleRole getAccessibleRole() {
+ return ac.getAccessibleRole();
+ }
+
+ /**
+ * Gets the state set of this object. The AccessibleStateSet of an object
+ * is composed of a set of unique AccessibleStates. A change in the
+ * AccessibleStateSet of an object will cause a PropertyChangeEvent to
+ * be fired for the ACCESSIBLE_STATE_PROPERTY property.
+ *
+ * @return an instance of AccessibleStateSet containing the
+ * current state set of the object
+ * @see AccessibleStateSet
+ * @see AccessibleState
+ * @see #addPropertyChangeListener
+ */
+ public AccessibleStateSet getAccessibleStateSet() {
+ return ac.getAccessibleStateSet();
+ }
+
+ /**
+ * Gets the Accessible parent of this object.
+ *
+ * @return the Accessible parent of this object; null if this
+ * object does not have an Accessible parent
+ */
+ public Accessible getAccessibleParent() {
+ return ac.getAccessibleParent();
+ }
+
+ /**
+ * Sets the Accessible parent of this object. This is meant to be used
+ * only in the situations where the actual component's parent should
+ * not be treated as the component's accessible parent and is a method
+ * that should only be called by the parent of the accessible child.
+ *
+ * @param a - Accessible to be set as the parent
+ */
+ public void setAccessibleParent(Accessible a) {
+ ac.setAccessibleParent(a);
+ }
+
+ /**
+ * Gets the 0-based index of this object in its accessible parent.
+ *
+ * @return the 0-based index of this object in its parent; -1 if this
+ * object does not have an accessible parent.
+ *
+ * @see #getAccessibleParent
+ * @see #getAccessibleChildrenCount
+ * @see #getAccessibleChild
+ */
+ public int getAccessibleIndexInParent() {
+ return JComboBox.this.getSelectedIndex();
+ }
+
+ /**
+ * Returns the number of accessible children of the object.
+ *
+ * @return the number of accessible children of the object.
+ */
+ public int getAccessibleChildrenCount() {
+ return ac.getAccessibleChildrenCount();
+ }
+
+ /**
+ * Returns the specified Accessible child of the object. The Accessible
+ * children of an Accessible object are zero-based, so the first child
+ * of an Accessible child is at index 0, the second child is at index 1,
+ * and so on.
+ *
+ * @param i zero-based index of child
+ * @return the Accessible child of the object
+ * @see #getAccessibleChildrenCount
+ */
+ public Accessible getAccessibleChild(int i) {
+ return ac.getAccessibleChild(i);
+ }
+
+ /**
+ * Gets the locale of the component. If the component does not have a
+ * locale, then the locale of its parent is returned.
+ *
+ * @return this component's locale. If this component does not have
+ * a locale, the locale of its parent is returned.
+ *
+ * @exception IllegalComponentStateException
+ * If the Component does not have its own locale and has not yet been
+ * added to a containment hierarchy such that the locale can be
+ * determined from the containing parent.
+ */
+ public Locale getLocale() throws IllegalComponentStateException {
+ return ac.getLocale();
+ }
+
+ /**
+ * Adds a PropertyChangeListener to the listener list.
+ * The listener is registered for all Accessible properties and will
+ * be called when those properties change.
+ *
+ * @see #ACCESSIBLE_NAME_PROPERTY
+ * @see #ACCESSIBLE_DESCRIPTION_PROPERTY
+ * @see #ACCESSIBLE_STATE_PROPERTY
+ * @see #ACCESSIBLE_VALUE_PROPERTY
+ * @see #ACCESSIBLE_SELECTION_PROPERTY
+ * @see #ACCESSIBLE_TEXT_PROPERTY
+ * @see #ACCESSIBLE_VISIBLE_DATA_PROPERTY
+ *
+ * @param listener The PropertyChangeListener to be added
+ */
+ public void addPropertyChangeListener(PropertyChangeListener listener) {
+ ac.addPropertyChangeListener(listener);
+ }
+
+ /**
+ * Removes a PropertyChangeListener from the listener list.
+ * This removes a PropertyChangeListener that was registered
+ * for all properties.
+ *
+ * @param listener The PropertyChangeListener to be removed
+ */
+ public void removePropertyChangeListener(PropertyChangeListener listener) {
+ ac.removePropertyChangeListener(listener);
+ }
+
+ /**
+ * Gets the AccessibleAction associated with this object that supports
+ * one or more actions.
+ *
+ * @return AccessibleAction if supported by object; else return null
+ * @see AccessibleAction
+ */
+ public AccessibleAction getAccessibleAction() {
+ return ac.getAccessibleAction();
+ }
+
+ /**
+ * Gets the AccessibleComponent associated with this object that has a
+ * graphical representation.
+ *
+ * @return AccessibleComponent if supported by object; else return null
+ * @see AccessibleComponent
+ */
+ public AccessibleComponent getAccessibleComponent() {
+ return ac.getAccessibleComponent();
+ }
+
+ /**
+ * Gets the AccessibleSelection associated with this object which allows its
+ * Accessible children to be selected.
+ *
+ * @return AccessibleSelection if supported by object; else return null
+ * @see AccessibleSelection
+ */
+ public AccessibleSelection getAccessibleSelection() {
+ return ac.getAccessibleSelection();
+ }
+
+ /**
+ * Gets the AccessibleText associated with this object presenting
+ * text on the display.
+ *
+ * @return AccessibleText if supported by object; else return null
+ * @see AccessibleText
+ */
+ public AccessibleText getAccessibleText() {
+ return ac.getAccessibleText();
+ }
+
+ /**
+ * Gets the AccessibleEditableText associated with this object
+ * presenting editable text on the display.
+ *
+ * @return AccessibleEditableText if supported by object; else return null
+ * @see AccessibleEditableText
+ */
+ public AccessibleEditableText getAccessibleEditableText() {
+ return ac.getAccessibleEditableText();
+ }
+
+ /**
+ * Gets the AccessibleValue associated with this object that supports a
+ * Numerical value.
+ *
+ * @return AccessibleValue if supported by object; else return null
+ * @see AccessibleValue
+ */
+ public AccessibleValue getAccessibleValue() {
+ return ac.getAccessibleValue();
+ }
+
+ /**
+ * Gets the AccessibleIcons associated with an object that has
+ * one or more associated icons
+ *
+ * @return an array of AccessibleIcon if supported by object;
+ * otherwise return null
+ * @see AccessibleIcon
+ */
+ public AccessibleIcon [] getAccessibleIcon() {
+ return ac.getAccessibleIcon();
+ }
+
+ /**
+ * Gets the AccessibleRelationSet associated with an object
+ *
+ * @return an AccessibleRelationSet if supported by object;
+ * otherwise return null
+ * @see AccessibleRelationSet
+ */
+ public AccessibleRelationSet getAccessibleRelationSet() {
+ return ac.getAccessibleRelationSet();
+ }
+
+ /**
+ * Gets the AccessibleTable associated with an object
+ *
+ * @return an AccessibleTable if supported by object;
+ * otherwise return null
+ * @see AccessibleTable
+ */
+ public AccessibleTable getAccessibleTable() {
+ return ac.getAccessibleTable();
+ }
+
+ /**
+ * Support for reporting bound property changes. If oldValue and
+ * newValue are not equal and the PropertyChangeEvent listener list
+ * is not empty, then fire a PropertyChange event to each listener.
+ * In general, this is for use by the Accessible objects themselves
+ * and should not be called by an application program.
+ * @param propertyName The programmatic name of the property that
+ * was changed.
+ * @param oldValue The old value of the property.
+ * @param newValue The new value of the property.
+ * @see java.beans.PropertyChangeSupport
+ * @see #addPropertyChangeListener
+ * @see #removePropertyChangeListener
+ * @see #ACCESSIBLE_NAME_PROPERTY
+ * @see #ACCESSIBLE_DESCRIPTION_PROPERTY
+ * @see #ACCESSIBLE_STATE_PROPERTY
+ * @see #ACCESSIBLE_VALUE_PROPERTY
+ * @see #ACCESSIBLE_SELECTION_PROPERTY
+ * @see #ACCESSIBLE_TEXT_PROPERTY
+ * @see #ACCESSIBLE_VISIBLE_DATA_PROPERTY
+ */
+ public void firePropertyChange(String propertyName,
+ Object oldValue,
+ Object newValue) {
+ ac.firePropertyChange(propertyName, oldValue, newValue);
+ }
+ }
+
+ } // innerclass AccessibleJComboBox
+}