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/*
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* Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing;
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import java.beans.*;
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import java.util.*;
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import java.awt.*;
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import java.awt.event.*;
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import java.io.Serializable;
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import java.io.ObjectOutputStream;
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import java.io.ObjectInputStream;
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import java.io.IOException;
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import javax.swing.event.*;
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import javax.swing.plaf.*;
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import javax.swing.border.*;
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import javax.accessibility.*;
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/**
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* A component that combines a button or editable field and a drop-down list.
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* The user can select a value from the drop-down list, which appears at the
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* user's request. If you make the combo box editable, then the combo box
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* includes an editable field into which the user can type a value.
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* <p>
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* <strong>Warning:</strong> Swing is not thread safe. For more
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* information see <a
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* href="package-summary.html#threading">Swing's Threading
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* Policy</a>.
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is
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* appropriate for short term storage or RMI between applications running
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* the same version of Swing. As of 1.4, support for long term storage
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* of all JavaBeans<sup><font size="-2">TM</font></sup>
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* has been added to the <code>java.beans</code> package.
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* Please see {@link java.beans.XMLEncoder}.
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*
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* <p>
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* See <a href="http://java.sun.com/docs/books/tutorial/uiswing/components/combobox.html">How to Use Combo Boxes</a>
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* in <a href="http://java.sun.com/Series/Tutorial/index.html"><em>The Java Tutorial</em></a>
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* for further information.
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* <p>
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* @see ComboBoxModel
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* @see DefaultComboBoxModel
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*
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* @beaninfo
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* attribute: isContainer false
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* description: A combination of a text field and a drop-down list.
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*
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* @author Arnaud Weber
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* @author Mark Davidson
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*/
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public class JComboBox extends JComponent
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implements ItemSelectable,ListDataListener,ActionListener, Accessible {
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/**
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* @see #getUIClassID
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* @see #readObject
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*/
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private static final String uiClassID = "ComboBoxUI";
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #getModel
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* @see #setModel
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*/
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protected ComboBoxModel dataModel;
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #getRenderer
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* @see #setRenderer
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*/
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protected ListCellRenderer renderer;
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #getEditor
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* @see #setEditor
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*/
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protected ComboBoxEditor editor;
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #getMaximumRowCount
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* @see #setMaximumRowCount
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*/
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protected int maximumRowCount = 8;
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #isEditable
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* @see #setEditable
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*/
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protected boolean isEditable = false;
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #setKeySelectionManager
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* @see #getKeySelectionManager
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*/
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protected KeySelectionManager keySelectionManager = null;
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #setActionCommand
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* @see #getActionCommand
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*/
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protected String actionCommand = "comboBoxChanged";
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/**
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* This protected field is implementation specific. Do not access directly
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* or override. Use the accessor methods instead.
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*
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* @see #setLightWeightPopupEnabled
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* @see #isLightWeightPopupEnabled
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*/
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protected boolean lightWeightPopupEnabled = JPopupMenu.getDefaultLightWeightPopupEnabled();
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/**
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* This protected field is implementation specific. Do not access directly
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* or override.
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*/
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protected Object selectedItemReminder = null;
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private Object prototypeDisplayValue;
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// Flag to ensure that infinite loops do not occur with ActionEvents.
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private boolean firingActionEvent = false;
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// Flag to ensure the we don't get multiple ActionEvents on item selection.
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private boolean selectingItem = false;
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/**
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* Creates a <code>JComboBox</code> that takes its items from an
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* existing <code>ComboBoxModel</code>. Since the
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* <code>ComboBoxModel</code> is provided, a combo box created using
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* this constructor does not create a default combo box model and
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* may impact how the insert, remove and add methods behave.
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*
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* @param aModel the <code>ComboBoxModel</code> that provides the
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* displayed list of items
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* @see DefaultComboBoxModel
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*/
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public JComboBox(ComboBoxModel aModel) {
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super();
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setModel(aModel);
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init();
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}
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/**
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* Creates a <code>JComboBox</code> that contains the elements
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* in the specified array. By default the first item in the array
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* (and therefore the data model) becomes selected.
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*
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* @param items an array of objects to insert into the combo box
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* @see DefaultComboBoxModel
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*/
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public JComboBox(final Object items[]) {
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super();
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setModel(new DefaultComboBoxModel(items));
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init();
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}
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/**
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* Creates a <code>JComboBox</code> that contains the elements
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* in the specified Vector. By default the first item in the vector
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* (and therefore the data model) becomes selected.
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*
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* @param items an array of vectors to insert into the combo box
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* @see DefaultComboBoxModel
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*/
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public JComboBox(Vector<?> items) {
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super();
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setModel(new DefaultComboBoxModel(items));
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init();
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}
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/**
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* Creates a <code>JComboBox</code> with a default data model.
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* The default data model is an empty list of objects.
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* Use <code>addItem</code> to add items. By default the first item
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* in the data model becomes selected.
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*
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* @see DefaultComboBoxModel
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*/
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public JComboBox() {
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super();
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setModel(new DefaultComboBoxModel());
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init();
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}
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private void init() {
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installAncestorListener();
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setOpaque(true);
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updateUI();
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}
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protected void installAncestorListener() {
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addAncestorListener(new AncestorListener(){
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public void ancestorAdded(AncestorEvent event){ hidePopup();}
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public void ancestorRemoved(AncestorEvent event){ hidePopup();}
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public void ancestorMoved(AncestorEvent event){
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if (event.getSource() != JComboBox.this)
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hidePopup();
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}});
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}
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/**
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* Sets the L&F object that renders this component.
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*
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* @param ui the <code>ComboBoxUI</code> L&F object
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* @see UIDefaults#getUI
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*
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* @beaninfo
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* bound: true
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* hidden: true
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* attribute: visualUpdate true
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* description: The UI object that implements the Component's LookAndFeel.
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*/
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public void setUI(ComboBoxUI ui) {
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super.setUI(ui);
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}
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/**
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* Resets the UI property to a value from the current look and feel.
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*
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* @see JComponent#updateUI
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*/
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public void updateUI() {
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setUI((ComboBoxUI)UIManager.getUI(this));
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ListCellRenderer renderer = getRenderer();
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if (renderer instanceof Component) {
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SwingUtilities.updateComponentTreeUI((Component)renderer);
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}
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}
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/**
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* Returns the name of the L&F class that renders this component.
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*
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* @return the string "ComboBoxUI"
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* @see JComponent#getUIClassID
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* @see UIDefaults#getUI
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*/
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public String getUIClassID() {
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return uiClassID;
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}
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/**
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* Returns the L&F object that renders this component.
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*
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* @return the ComboBoxUI object that renders this component
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*/
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public ComboBoxUI getUI() {
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return(ComboBoxUI)ui;
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}
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/**
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* Sets the data model that the <code>JComboBox</code> uses to obtain
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* the list of items.
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*
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* @param aModel the <code>ComboBoxModel</code> that provides the
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* displayed list of items
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*
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* @beaninfo
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* bound: true
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* description: Model that the combo box uses to get data to display.
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*/
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public void setModel(ComboBoxModel aModel) {
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ComboBoxModel oldModel = dataModel;
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if (oldModel != null) {
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oldModel.removeListDataListener(this);
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}
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dataModel = aModel;
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dataModel.addListDataListener(this);
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// set the current selected item.
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selectedItemReminder = dataModel.getSelectedItem();
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firePropertyChange( "model", oldModel, dataModel);
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}
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/**
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* Returns the data model currently used by the <code>JComboBox</code>.
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*
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* @return the <code>ComboBoxModel</code> that provides the displayed
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* list of items
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*/
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public ComboBoxModel getModel() {
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return dataModel;
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}
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/*
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* Properties
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*/
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/**
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* Sets the <code>lightWeightPopupEnabled</code> property, which
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* provides a hint as to whether or not a lightweight
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* <code>Component</code> should be used to contain the
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* <code>JComboBox</code>, versus a heavyweight
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* <code>Component</code> such as a <code>Panel</code>
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* or a <code>Window</code>. The decision of lightweight
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* versus heavyweight is ultimately up to the
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* <code>JComboBox</code>. Lightweight windows are more
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* efficient than heavyweight windows, but lightweight
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* and heavyweight components do not mix well in a GUI.
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* If your application mixes lightweight and heavyweight
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* components, you should disable lightweight popups.
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* The default value for the <code>lightWeightPopupEnabled</code>
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* property is <code>true</code>, unless otherwise specified
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* by the look and feel. Some look and feels always use
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* heavyweight popups, no matter what the value of this property.
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* <p>
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* See the article <a href="http://java.sun.com/products/jfc/tsc/articles/mixing/index.html">Mixing Heavy and Light Components</a>
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* on <a href="http://java.sun.com/products/jfc/tsc">
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* <em>The Swing Connection</em></a>
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* This method fires a property changed event.
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*
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* @param aFlag if <code>true</code>, lightweight popups are desired
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*
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* @beaninfo
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* bound: true
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* expert: true
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* description: Set to <code>false</code> to require heavyweight popups.
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*/
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public void setLightWeightPopupEnabled(boolean aFlag) {
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boolean oldFlag = lightWeightPopupEnabled;
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lightWeightPopupEnabled = aFlag;
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firePropertyChange("lightWeightPopupEnabled", oldFlag, lightWeightPopupEnabled);
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}
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/**
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* Gets the value of the <code>lightWeightPopupEnabled</code>
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* property.
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*
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* @return the value of the <code>lightWeightPopupEnabled</code>
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* property
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* @see #setLightWeightPopupEnabled
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*/
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public boolean isLightWeightPopupEnabled() {
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return lightWeightPopupEnabled;
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}
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/**
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* Determines whether the <code>JComboBox</code> field is editable.
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* An editable <code>JComboBox</code> allows the user to type into the
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* field or selected an item from the list to initialize the field,
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* after which it can be edited. (The editing affects only the field,
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* the list item remains intact.) A non editable <code>JComboBox</code>
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* displays the selected item in the field,
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* but the selection cannot be modified.
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*
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* @param aFlag a boolean value, where true indicates that the
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* field is editable
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*
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* @beaninfo
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* bound: true
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* preferred: true
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* description: If true, the user can type a new value in the combo box.
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*/
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public void setEditable(boolean aFlag) {
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boolean oldFlag = isEditable;
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isEditable = aFlag;
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firePropertyChange( "editable", oldFlag, isEditable );
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}
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/**
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* Returns true if the <code>JComboBox</code> is editable.
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* By default, a combo box is not editable.
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*
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* @return true if the <code>JComboBox</code> is editable, else false
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*/
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public boolean isEditable() {
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return isEditable;
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}
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/**
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* Sets the maximum number of rows the <code>JComboBox</code> displays.
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* If the number of objects in the model is greater than count,
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* the combo box uses a scrollbar.
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*
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* @param count an integer specifying the maximum number of items to
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* display in the list before using a scrollbar
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* @beaninfo
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* bound: true
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* preferred: true
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* description: The maximum number of rows the popup should have
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*/
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public void setMaximumRowCount(int count) {
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|
427 |
int oldCount = maximumRowCount;
|
|
428 |
maximumRowCount = count;
|
|
429 |
firePropertyChange( "maximumRowCount", oldCount, maximumRowCount );
|
|
430 |
}
|
|
431 |
|
|
432 |
/**
|
|
433 |
* Returns the maximum number of items the combo box can display
|
|
434 |
* without a scrollbar
|
|
435 |
*
|
|
436 |
* @return an integer specifying the maximum number of items that are
|
|
437 |
* displayed in the list before using a scrollbar
|
|
438 |
*/
|
|
439 |
public int getMaximumRowCount() {
|
|
440 |
return maximumRowCount;
|
|
441 |
}
|
|
442 |
|
|
443 |
/**
|
|
444 |
* Sets the renderer that paints the list items and the item selected from the list in
|
|
445 |
* the JComboBox field. The renderer is used if the JComboBox is not
|
|
446 |
* editable. If it is editable, the editor is used to render and edit
|
|
447 |
* the selected item.
|
|
448 |
* <p>
|
|
449 |
* The default renderer displays a string or an icon.
|
|
450 |
* Other renderers can handle graphic images and composite items.
|
|
451 |
* <p>
|
|
452 |
* To display the selected item,
|
|
453 |
* <code>aRenderer.getListCellRendererComponent</code>
|
|
454 |
* is called, passing the list object and an index of -1.
|
|
455 |
*
|
|
456 |
* @param aRenderer the <code>ListCellRenderer</code> that
|
|
457 |
* displays the selected item
|
|
458 |
* @see #setEditor
|
|
459 |
* @beaninfo
|
|
460 |
* bound: true
|
|
461 |
* expert: true
|
|
462 |
* description: The renderer that paints the item selected in the list.
|
|
463 |
*/
|
|
464 |
public void setRenderer(ListCellRenderer aRenderer) {
|
|
465 |
ListCellRenderer oldRenderer = renderer;
|
|
466 |
renderer = aRenderer;
|
|
467 |
firePropertyChange( "renderer", oldRenderer, renderer );
|
|
468 |
invalidate();
|
|
469 |
}
|
|
470 |
|
|
471 |
/**
|
|
472 |
* Returns the renderer used to display the selected item in the
|
|
473 |
* <code>JComboBox</code> field.
|
|
474 |
*
|
|
475 |
* @return the <code>ListCellRenderer</code> that displays
|
|
476 |
* the selected item.
|
|
477 |
*/
|
|
478 |
public ListCellRenderer getRenderer() {
|
|
479 |
return renderer;
|
|
480 |
}
|
|
481 |
|
|
482 |
/**
|
|
483 |
* Sets the editor used to paint and edit the selected item in the
|
|
484 |
* <code>JComboBox</code> field. The editor is used only if the
|
|
485 |
* receiving <code>JComboBox</code> is editable. If not editable,
|
|
486 |
* the combo box uses the renderer to paint the selected item.
|
|
487 |
*
|
|
488 |
* @param anEditor the <code>ComboBoxEditor</code> that
|
|
489 |
* displays the selected item
|
|
490 |
* @see #setRenderer
|
|
491 |
* @beaninfo
|
|
492 |
* bound: true
|
|
493 |
* expert: true
|
|
494 |
* description: The editor that combo box uses to edit the current value
|
|
495 |
*/
|
|
496 |
public void setEditor(ComboBoxEditor anEditor) {
|
|
497 |
ComboBoxEditor oldEditor = editor;
|
|
498 |
|
|
499 |
if ( editor != null ) {
|
|
500 |
editor.removeActionListener(this);
|
|
501 |
}
|
|
502 |
editor = anEditor;
|
|
503 |
if ( editor != null ) {
|
|
504 |
editor.addActionListener(this);
|
|
505 |
}
|
|
506 |
firePropertyChange( "editor", oldEditor, editor );
|
|
507 |
}
|
|
508 |
|
|
509 |
/**
|
|
510 |
* Returns the editor used to paint and edit the selected item in the
|
|
511 |
* <code>JComboBox</code> field.
|
|
512 |
*
|
|
513 |
* @return the <code>ComboBoxEditor</code> that displays the selected item
|
|
514 |
*/
|
|
515 |
public ComboBoxEditor getEditor() {
|
|
516 |
return editor;
|
|
517 |
}
|
|
518 |
|
|
519 |
//
|
|
520 |
// Selection
|
|
521 |
//
|
|
522 |
|
|
523 |
/**
|
|
524 |
* Sets the selected item in the combo box display area to the object in
|
|
525 |
* the argument.
|
|
526 |
* If <code>anObject</code> is in the list, the display area shows
|
|
527 |
* <code>anObject</code> selected.
|
|
528 |
* <p>
|
|
529 |
* If <code>anObject</code> is <i>not</i> in the list and the combo box is
|
|
530 |
* uneditable, it will not change the current selection. For editable
|
|
531 |
* combo boxes, the selection will change to <code>anObject</code>.
|
|
532 |
* <p>
|
|
533 |
* If this constitutes a change in the selected item,
|
|
534 |
* <code>ItemListener</code>s added to the combo box will be notified with
|
|
535 |
* one or two <code>ItemEvent</code>s.
|
|
536 |
* If there is a current selected item, an <code>ItemEvent</code> will be
|
|
537 |
* fired and the state change will be <code>ItemEvent.DESELECTED</code>.
|
|
538 |
* If <code>anObject</code> is in the list and is not currently selected
|
|
539 |
* then an <code>ItemEvent</code> will be fired and the state change will
|
|
540 |
* be <code>ItemEvent.SELECTED</code>.
|
|
541 |
* <p>
|
|
542 |
* <code>ActionListener</code>s added to the combo box will be notified
|
|
543 |
* with an <code>ActionEvent</code> when this method is called.
|
|
544 |
*
|
|
545 |
* @param anObject the list object to select; use <code>null</code> to
|
|
546 |
clear the selection
|
|
547 |
* @beaninfo
|
|
548 |
* preferred: true
|
|
549 |
* description: Sets the selected item in the JComboBox.
|
|
550 |
*/
|
|
551 |
public void setSelectedItem(Object anObject) {
|
|
552 |
Object oldSelection = selectedItemReminder;
|
|
553 |
Object objectToSelect = anObject;
|
|
554 |
if (oldSelection == null || !oldSelection.equals(anObject)) {
|
|
555 |
|
|
556 |
if (anObject != null && !isEditable()) {
|
|
557 |
// For non editable combo boxes, an invalid selection
|
|
558 |
// will be rejected.
|
|
559 |
boolean found = false;
|
|
560 |
for (int i = 0; i < dataModel.getSize(); i++) {
|
|
561 |
Object element = dataModel.getElementAt(i);
|
|
562 |
if (anObject.equals(element)) {
|
|
563 |
found = true;
|
|
564 |
objectToSelect = element;
|
|
565 |
break;
|
|
566 |
}
|
|
567 |
}
|
|
568 |
if (!found) {
|
|
569 |
return;
|
|
570 |
}
|
|
571 |
}
|
|
572 |
|
|
573 |
// Must toggle the state of this flag since this method
|
|
574 |
// call may result in ListDataEvents being fired.
|
|
575 |
selectingItem = true;
|
|
576 |
dataModel.setSelectedItem(objectToSelect);
|
|
577 |
selectingItem = false;
|
|
578 |
|
|
579 |
if (selectedItemReminder != dataModel.getSelectedItem()) {
|
|
580 |
// in case a users implementation of ComboBoxModel
|
|
581 |
// doesn't fire a ListDataEvent when the selection
|
|
582 |
// changes.
|
|
583 |
selectedItemChanged();
|
|
584 |
}
|
|
585 |
}
|
|
586 |
fireActionEvent();
|
|
587 |
}
|
|
588 |
|
|
589 |
/**
|
|
590 |
* Returns the current selected item.
|
|
591 |
* <p>
|
|
592 |
* If the combo box is editable, then this value may not have been added
|
|
593 |
* to the combo box with <code>addItem</code>, <code>insertItemAt</code>
|
|
594 |
* or the data constructors.
|
|
595 |
*
|
|
596 |
* @return the current selected Object
|
|
597 |
* @see #setSelectedItem
|
|
598 |
*/
|
|
599 |
public Object getSelectedItem() {
|
|
600 |
return dataModel.getSelectedItem();
|
|
601 |
}
|
|
602 |
|
|
603 |
/**
|
|
604 |
* Selects the item at index <code>anIndex</code>.
|
|
605 |
*
|
|
606 |
* @param anIndex an integer specifying the list item to select,
|
|
607 |
* where 0 specifies the first item in the list and -1 indicates no selection
|
|
608 |
* @exception IllegalArgumentException if <code>anIndex</code> < -1 or
|
|
609 |
* <code>anIndex</code> is greater than or equal to size
|
|
610 |
* @beaninfo
|
|
611 |
* preferred: true
|
|
612 |
* description: The item at index is selected.
|
|
613 |
*/
|
|
614 |
public void setSelectedIndex(int anIndex) {
|
|
615 |
int size = dataModel.getSize();
|
|
616 |
|
|
617 |
if ( anIndex == -1 ) {
|
|
618 |
setSelectedItem( null );
|
|
619 |
} else if ( anIndex < -1 || anIndex >= size ) {
|
|
620 |
throw new IllegalArgumentException("setSelectedIndex: " + anIndex + " out of bounds");
|
|
621 |
} else {
|
|
622 |
setSelectedItem(dataModel.getElementAt(anIndex));
|
|
623 |
}
|
|
624 |
}
|
|
625 |
|
|
626 |
/**
|
|
627 |
* Returns the first item in the list that matches the given item.
|
|
628 |
* The result is not always defined if the <code>JComboBox</code>
|
|
629 |
* allows selected items that are not in the list.
|
|
630 |
* Returns -1 if there is no selected item or if the user specified
|
|
631 |
* an item which is not in the list.
|
|
632 |
|
|
633 |
* @return an integer specifying the currently selected list item,
|
|
634 |
* where 0 specifies
|
|
635 |
* the first item in the list;
|
|
636 |
* or -1 if no item is selected or if
|
|
637 |
* the currently selected item is not in the list
|
|
638 |
*/
|
|
639 |
public int getSelectedIndex() {
|
|
640 |
Object sObject = dataModel.getSelectedItem();
|
|
641 |
int i,c;
|
|
642 |
Object obj;
|
|
643 |
|
|
644 |
for ( i=0,c=dataModel.getSize();i<c;i++ ) {
|
|
645 |
obj = dataModel.getElementAt(i);
|
|
646 |
if ( obj != null && obj.equals(sObject) )
|
|
647 |
return i;
|
|
648 |
}
|
|
649 |
return -1;
|
|
650 |
}
|
|
651 |
|
|
652 |
/**
|
|
653 |
* Returns the "prototypical display" value - an Object used
|
|
654 |
* for the calculation of the display height and width.
|
|
655 |
*
|
|
656 |
* @return the value of the <code>prototypeDisplayValue</code> property
|
|
657 |
* @see #setPrototypeDisplayValue
|
|
658 |
* @since 1.4
|
|
659 |
*/
|
|
660 |
public Object getPrototypeDisplayValue() {
|
|
661 |
return prototypeDisplayValue;
|
|
662 |
}
|
|
663 |
|
|
664 |
/**
|
|
665 |
* Sets the prototype display value used to calculate the size of the display
|
|
666 |
* for the UI portion.
|
|
667 |
* <p>
|
|
668 |
* If a prototype display value is specified, the preferred size of
|
|
669 |
* the combo box is calculated by configuring the renderer with the
|
|
670 |
* prototype display value and obtaining its preferred size. Specifying
|
|
671 |
* the preferred display value is often useful when the combo box will be
|
|
672 |
* displaying large amounts of data. If no prototype display value has
|
|
673 |
* been specified, the renderer must be configured for each value from
|
|
674 |
* the model and its preferred size obtained, which can be
|
|
675 |
* relatively expensive.
|
|
676 |
*
|
|
677 |
* @param prototypeDisplayValue
|
|
678 |
* @see #getPrototypeDisplayValue
|
|
679 |
* @since 1.4
|
|
680 |
* @beaninfo
|
|
681 |
* bound: true
|
|
682 |
* attribute: visualUpdate true
|
|
683 |
* description: The display prototype value, used to compute display width and height.
|
|
684 |
*/
|
|
685 |
public void setPrototypeDisplayValue(Object prototypeDisplayValue) {
|
|
686 |
Object oldValue = this.prototypeDisplayValue;
|
|
687 |
this.prototypeDisplayValue = prototypeDisplayValue;
|
|
688 |
firePropertyChange("prototypeDisplayValue", oldValue, prototypeDisplayValue);
|
|
689 |
}
|
|
690 |
|
|
691 |
/**
|
|
692 |
* Adds an item to the item list.
|
|
693 |
* This method works only if the <code>JComboBox</code> uses a
|
|
694 |
* mutable data model.
|
|
695 |
* <p>
|
|
696 |
* <strong>Warning:</strong>
|
|
697 |
* Focus and keyboard navigation problems may arise if you add duplicate
|
|
698 |
* String objects. A workaround is to add new objects instead of String
|
|
699 |
* objects and make sure that the toString() method is defined.
|
|
700 |
* For example:
|
|
701 |
* <pre>
|
|
702 |
* comboBox.addItem(makeObj("Item 1"));
|
|
703 |
* comboBox.addItem(makeObj("Item 1"));
|
|
704 |
* ...
|
|
705 |
* private Object makeObj(final String item) {
|
|
706 |
* return new Object() { public String toString() { return item; } };
|
|
707 |
* }
|
|
708 |
* </pre>
|
|
709 |
*
|
|
710 |
* @param anObject the Object to add to the list
|
|
711 |
* @see MutableComboBoxModel
|
|
712 |
*/
|
|
713 |
public void addItem(Object anObject) {
|
|
714 |
checkMutableComboBoxModel();
|
|
715 |
((MutableComboBoxModel)dataModel).addElement(anObject);
|
|
716 |
}
|
|
717 |
|
|
718 |
/**
|
|
719 |
* Inserts an item into the item list at a given index.
|
|
720 |
* This method works only if the <code>JComboBox</code> uses a
|
|
721 |
* mutable data model.
|
|
722 |
*
|
|
723 |
* @param anObject the <code>Object</code> to add to the list
|
|
724 |
* @param index an integer specifying the position at which
|
|
725 |
* to add the item
|
|
726 |
* @see MutableComboBoxModel
|
|
727 |
*/
|
|
728 |
public void insertItemAt(Object anObject, int index) {
|
|
729 |
checkMutableComboBoxModel();
|
|
730 |
((MutableComboBoxModel)dataModel).insertElementAt(anObject,index);
|
|
731 |
}
|
|
732 |
|
|
733 |
/**
|
|
734 |
* Removes an item from the item list.
|
|
735 |
* This method works only if the <code>JComboBox</code> uses a
|
|
736 |
* mutable data model.
|
|
737 |
*
|
|
738 |
* @param anObject the object to remove from the item list
|
|
739 |
* @see MutableComboBoxModel
|
|
740 |
*/
|
|
741 |
public void removeItem(Object anObject) {
|
|
742 |
checkMutableComboBoxModel();
|
|
743 |
((MutableComboBoxModel)dataModel).removeElement(anObject);
|
|
744 |
}
|
|
745 |
|
|
746 |
/**
|
|
747 |
* Removes the item at <code>anIndex</code>
|
|
748 |
* This method works only if the <code>JComboBox</code> uses a
|
|
749 |
* mutable data model.
|
|
750 |
*
|
|
751 |
* @param anIndex an int specifying the index of the item to remove,
|
|
752 |
* where 0
|
|
753 |
* indicates the first item in the list
|
|
754 |
* @see MutableComboBoxModel
|
|
755 |
*/
|
|
756 |
public void removeItemAt(int anIndex) {
|
|
757 |
checkMutableComboBoxModel();
|
|
758 |
((MutableComboBoxModel)dataModel).removeElementAt( anIndex );
|
|
759 |
}
|
|
760 |
|
|
761 |
/**
|
|
762 |
* Removes all items from the item list.
|
|
763 |
*/
|
|
764 |
public void removeAllItems() {
|
|
765 |
checkMutableComboBoxModel();
|
|
766 |
MutableComboBoxModel model = (MutableComboBoxModel)dataModel;
|
|
767 |
int size = model.getSize();
|
|
768 |
|
|
769 |
if ( model instanceof DefaultComboBoxModel ) {
|
|
770 |
((DefaultComboBoxModel)model).removeAllElements();
|
|
771 |
}
|
|
772 |
else {
|
|
773 |
for ( int i = 0; i < size; ++i ) {
|
|
774 |
Object element = model.getElementAt( 0 );
|
|
775 |
model.removeElement( element );
|
|
776 |
}
|
|
777 |
}
|
|
778 |
selectedItemReminder = null;
|
|
779 |
if (isEditable()) {
|
|
780 |
editor.setItem(null);
|
|
781 |
}
|
|
782 |
}
|
|
783 |
|
|
784 |
/**
|
|
785 |
* Checks that the <code>dataModel</code> is an instance of
|
|
786 |
* <code>MutableComboBoxModel</code>. If not, it throws an exception.
|
|
787 |
* @exception RuntimeException if <code>dataModel</code> is not an
|
|
788 |
* instance of <code>MutableComboBoxModel</code>.
|
|
789 |
*/
|
|
790 |
void checkMutableComboBoxModel() {
|
|
791 |
if ( !(dataModel instanceof MutableComboBoxModel) )
|
|
792 |
throw new RuntimeException("Cannot use this method with a non-Mutable data model.");
|
|
793 |
}
|
|
794 |
|
|
795 |
/**
|
|
796 |
* Causes the combo box to display its popup window.
|
|
797 |
* @see #setPopupVisible
|
|
798 |
*/
|
|
799 |
public void showPopup() {
|
|
800 |
setPopupVisible(true);
|
|
801 |
}
|
|
802 |
|
|
803 |
/**
|
|
804 |
* Causes the combo box to close its popup window.
|
|
805 |
* @see #setPopupVisible
|
|
806 |
*/
|
|
807 |
public void hidePopup() {
|
|
808 |
setPopupVisible(false);
|
|
809 |
}
|
|
810 |
|
|
811 |
/**
|
|
812 |
* Sets the visibility of the popup.
|
|
813 |
*/
|
|
814 |
public void setPopupVisible(boolean v) {
|
|
815 |
getUI().setPopupVisible(this, v);
|
|
816 |
}
|
|
817 |
|
|
818 |
/**
|
|
819 |
* Determines the visibility of the popup.
|
|
820 |
*
|
|
821 |
* @return true if the popup is visible, otherwise returns false
|
|
822 |
*/
|
|
823 |
public boolean isPopupVisible() {
|
|
824 |
return getUI().isPopupVisible(this);
|
|
825 |
}
|
|
826 |
|
|
827 |
/** Selection **/
|
|
828 |
|
|
829 |
/**
|
|
830 |
* Adds an <code>ItemListener</code>.
|
|
831 |
* <p>
|
|
832 |
* <code>aListener</code> will receive one or two <code>ItemEvent</code>s when
|
|
833 |
* the selected item changes.
|
|
834 |
*
|
|
835 |
* @param aListener the <code>ItemListener</code> that is to be notified
|
|
836 |
* @see #setSelectedItem
|
|
837 |
*/
|
|
838 |
public void addItemListener(ItemListener aListener) {
|
|
839 |
listenerList.add(ItemListener.class,aListener);
|
|
840 |
}
|
|
841 |
|
|
842 |
/** Removes an <code>ItemListener</code>.
|
|
843 |
*
|
|
844 |
* @param aListener the <code>ItemListener</code> to remove
|
|
845 |
*/
|
|
846 |
public void removeItemListener(ItemListener aListener) {
|
|
847 |
listenerList.remove(ItemListener.class,aListener);
|
|
848 |
}
|
|
849 |
|
|
850 |
/**
|
|
851 |
* Returns an array of all the <code>ItemListener</code>s added
|
|
852 |
* to this JComboBox with addItemListener().
|
|
853 |
*
|
|
854 |
* @return all of the <code>ItemListener</code>s added or an empty
|
|
855 |
* array if no listeners have been added
|
|
856 |
* @since 1.4
|
|
857 |
*/
|
|
858 |
public ItemListener[] getItemListeners() {
|
|
859 |
return (ItemListener[])listenerList.getListeners(ItemListener.class);
|
|
860 |
}
|
|
861 |
|
|
862 |
/**
|
|
863 |
* Adds an <code>ActionListener</code>.
|
|
864 |
* <p>
|
|
865 |
* The <code>ActionListener</code> will receive an <code>ActionEvent</code>
|
|
866 |
* when a selection has been made. If the combo box is editable, then
|
|
867 |
* an <code>ActionEvent</code> will be fired when editing has stopped.
|
|
868 |
*
|
|
869 |
* @param l the <code>ActionListener</code> that is to be notified
|
|
870 |
* @see #setSelectedItem
|
|
871 |
*/
|
|
872 |
public void addActionListener(ActionListener l) {
|
|
873 |
listenerList.add(ActionListener.class,l);
|
|
874 |
}
|
|
875 |
|
|
876 |
/** Removes an <code>ActionListener</code>.
|
|
877 |
*
|
|
878 |
* @param l the <code>ActionListener</code> to remove
|
|
879 |
*/
|
|
880 |
public void removeActionListener(ActionListener l) {
|
|
881 |
if ((l != null) && (getAction() == l)) {
|
|
882 |
setAction(null);
|
|
883 |
} else {
|
|
884 |
listenerList.remove(ActionListener.class, l);
|
|
885 |
}
|
|
886 |
}
|
|
887 |
|
|
888 |
/**
|
|
889 |
* Returns an array of all the <code>ActionListener</code>s added
|
|
890 |
* to this JComboBox with addActionListener().
|
|
891 |
*
|
|
892 |
* @return all of the <code>ActionListener</code>s added or an empty
|
|
893 |
* array if no listeners have been added
|
|
894 |
* @since 1.4
|
|
895 |
*/
|
|
896 |
public ActionListener[] getActionListeners() {
|
|
897 |
return (ActionListener[])listenerList.getListeners(
|
|
898 |
ActionListener.class);
|
|
899 |
}
|
|
900 |
|
|
901 |
/**
|
|
902 |
* Adds a <code>PopupMenu</code> listener which will listen to notification
|
|
903 |
* messages from the popup portion of the combo box.
|
|
904 |
* <p>
|
|
905 |
* For all standard look and feels shipped with Java, the popup list
|
|
906 |
* portion of combo box is implemented as a <code>JPopupMenu</code>.
|
|
907 |
* A custom look and feel may not implement it this way and will
|
|
908 |
* therefore not receive the notification.
|
|
909 |
*
|
|
910 |
* @param l the <code>PopupMenuListener</code> to add
|
|
911 |
* @since 1.4
|
|
912 |
*/
|
|
913 |
public void addPopupMenuListener(PopupMenuListener l) {
|
|
914 |
listenerList.add(PopupMenuListener.class,l);
|
|
915 |
}
|
|
916 |
|
|
917 |
/**
|
|
918 |
* Removes a <code>PopupMenuListener</code>.
|
|
919 |
*
|
|
920 |
* @param l the <code>PopupMenuListener</code> to remove
|
|
921 |
* @see #addPopupMenuListener
|
|
922 |
* @since 1.4
|
|
923 |
*/
|
|
924 |
public void removePopupMenuListener(PopupMenuListener l) {
|
|
925 |
listenerList.remove(PopupMenuListener.class,l);
|
|
926 |
}
|
|
927 |
|
|
928 |
/**
|
|
929 |
* Returns an array of all the <code>PopupMenuListener</code>s added
|
|
930 |
* to this JComboBox with addPopupMenuListener().
|
|
931 |
*
|
|
932 |
* @return all of the <code>PopupMenuListener</code>s added or an empty
|
|
933 |
* array if no listeners have been added
|
|
934 |
* @since 1.4
|
|
935 |
*/
|
|
936 |
public PopupMenuListener[] getPopupMenuListeners() {
|
|
937 |
return (PopupMenuListener[])listenerList.getListeners(
|
|
938 |
PopupMenuListener.class);
|
|
939 |
}
|
|
940 |
|
|
941 |
/**
|
|
942 |
* Notifies <code>PopupMenuListener</code>s that the popup portion of the
|
|
943 |
* combo box will become visible.
|
|
944 |
* <p>
|
|
945 |
* This method is public but should not be called by anything other than
|
|
946 |
* the UI delegate.
|
|
947 |
* @see #addPopupMenuListener
|
|
948 |
* @since 1.4
|
|
949 |
*/
|
|
950 |
public void firePopupMenuWillBecomeVisible() {
|
|
951 |
Object[] listeners = listenerList.getListenerList();
|
|
952 |
PopupMenuEvent e=null;
|
|
953 |
for (int i = listeners.length-2; i>=0; i-=2) {
|
|
954 |
if (listeners[i]==PopupMenuListener.class) {
|
|
955 |
if (e == null)
|
|
956 |
e = new PopupMenuEvent(this);
|
|
957 |
((PopupMenuListener)listeners[i+1]).popupMenuWillBecomeVisible(e);
|
|
958 |
}
|
|
959 |
}
|
|
960 |
}
|
|
961 |
|
|
962 |
/**
|
|
963 |
* Notifies <code>PopupMenuListener</code>s that the popup portion of the
|
|
964 |
* combo box has become invisible.
|
|
965 |
* <p>
|
|
966 |
* This method is public but should not be called by anything other than
|
|
967 |
* the UI delegate.
|
|
968 |
* @see #addPopupMenuListener
|
|
969 |
* @since 1.4
|
|
970 |
*/
|
|
971 |
public void firePopupMenuWillBecomeInvisible() {
|
|
972 |
Object[] listeners = listenerList.getListenerList();
|
|
973 |
PopupMenuEvent e=null;
|
|
974 |
for (int i = listeners.length-2; i>=0; i-=2) {
|
|
975 |
if (listeners[i]==PopupMenuListener.class) {
|
|
976 |
if (e == null)
|
|
977 |
e = new PopupMenuEvent(this);
|
|
978 |
((PopupMenuListener)listeners[i+1]).popupMenuWillBecomeInvisible(e);
|
|
979 |
}
|
|
980 |
}
|
|
981 |
}
|
|
982 |
|
|
983 |
/**
|
|
984 |
* Notifies <code>PopupMenuListener</code>s that the popup portion of the
|
|
985 |
* combo box has been canceled.
|
|
986 |
* <p>
|
|
987 |
* This method is public but should not be called by anything other than
|
|
988 |
* the UI delegate.
|
|
989 |
* @see #addPopupMenuListener
|
|
990 |
* @since 1.4
|
|
991 |
*/
|
|
992 |
public void firePopupMenuCanceled() {
|
|
993 |
Object[] listeners = listenerList.getListenerList();
|
|
994 |
PopupMenuEvent e=null;
|
|
995 |
for (int i = listeners.length-2; i>=0; i-=2) {
|
|
996 |
if (listeners[i]==PopupMenuListener.class) {
|
|
997 |
if (e == null)
|
|
998 |
e = new PopupMenuEvent(this);
|
|
999 |
((PopupMenuListener)listeners[i+1]).popupMenuCanceled(e);
|
|
1000 |
}
|
|
1001 |
}
|
|
1002 |
}
|
|
1003 |
|
|
1004 |
/**
|
|
1005 |
* Sets the action command that should be included in the event
|
|
1006 |
* sent to action listeners.
|
|
1007 |
*
|
|
1008 |
* @param aCommand a string containing the "command" that is sent
|
|
1009 |
* to action listeners; the same listener can then
|
|
1010 |
* do different things depending on the command it
|
|
1011 |
* receives
|
|
1012 |
*/
|
|
1013 |
public void setActionCommand(String aCommand) {
|
|
1014 |
actionCommand = aCommand;
|
|
1015 |
}
|
|
1016 |
|
|
1017 |
/**
|
|
1018 |
* Returns the action command that is included in the event sent to
|
|
1019 |
* action listeners.
|
|
1020 |
*
|
|
1021 |
* @return the string containing the "command" that is sent
|
|
1022 |
* to action listeners.
|
|
1023 |
*/
|
|
1024 |
public String getActionCommand() {
|
|
1025 |
return actionCommand;
|
|
1026 |
}
|
|
1027 |
|
|
1028 |
private Action action;
|
|
1029 |
private PropertyChangeListener actionPropertyChangeListener;
|
|
1030 |
|
|
1031 |
/**
|
|
1032 |
* Sets the <code>Action</code> for the <code>ActionEvent</code> source.
|
|
1033 |
* The new <code>Action</code> replaces any previously set
|
|
1034 |
* <code>Action</code> but does not affect <code>ActionListeners</code>
|
|
1035 |
* independently added with <code>addActionListener</code>.
|
|
1036 |
* If the <code>Action</code> is already a registered
|
|
1037 |
* <code>ActionListener</code> for the <code>ActionEvent</code> source,
|
|
1038 |
* it is not re-registered.
|
|
1039 |
* <p>
|
|
1040 |
* Setting the <code>Action</code> results in immediately changing
|
|
1041 |
* all the properties described in <a href="Action.html#buttonActions">
|
|
1042 |
* Swing Components Supporting <code>Action</code></a>.
|
|
1043 |
* Subsequently, the combobox's properties are automatically updated
|
|
1044 |
* as the <code>Action</code>'s properties change.
|
|
1045 |
* <p>
|
|
1046 |
* This method uses three other methods to set
|
|
1047 |
* and help track the <code>Action</code>'s property values.
|
|
1048 |
* It uses the <code>configurePropertiesFromAction</code> method
|
|
1049 |
* to immediately change the combobox's properties.
|
|
1050 |
* To track changes in the <code>Action</code>'s property values,
|
|
1051 |
* this method registers the <code>PropertyChangeListener</code>
|
|
1052 |
* returned by <code>createActionPropertyChangeListener</code>. The
|
|
1053 |
* default {@code PropertyChangeListener} invokes the
|
|
1054 |
* {@code actionPropertyChanged} method when a property in the
|
|
1055 |
* {@code Action} changes.
|
|
1056 |
*
|
|
1057 |
* @param a the <code>Action</code> for the <code>JComboBox</code>,
|
|
1058 |
* or <code>null</code>.
|
|
1059 |
* @since 1.3
|
|
1060 |
* @see Action
|
|
1061 |
* @see #getAction
|
|
1062 |
* @see #configurePropertiesFromAction
|
|
1063 |
* @see #createActionPropertyChangeListener
|
|
1064 |
* @see #actionPropertyChanged
|
|
1065 |
* @beaninfo
|
|
1066 |
* bound: true
|
|
1067 |
* attribute: visualUpdate true
|
|
1068 |
* description: the Action instance connected with this ActionEvent source
|
|
1069 |
*/
|
|
1070 |
public void setAction(Action a) {
|
|
1071 |
Action oldValue = getAction();
|
|
1072 |
if (action==null || !action.equals(a)) {
|
|
1073 |
action = a;
|
|
1074 |
if (oldValue!=null) {
|
|
1075 |
removeActionListener(oldValue);
|
|
1076 |
oldValue.removePropertyChangeListener(actionPropertyChangeListener);
|
|
1077 |
actionPropertyChangeListener = null;
|
|
1078 |
}
|
|
1079 |
configurePropertiesFromAction(action);
|
|
1080 |
if (action!=null) {
|
|
1081 |
// Don't add if it is already a listener
|
|
1082 |
if (!isListener(ActionListener.class, action)) {
|
|
1083 |
addActionListener(action);
|
|
1084 |
}
|
|
1085 |
// Reverse linkage:
|
|
1086 |
actionPropertyChangeListener = createActionPropertyChangeListener(action);
|
|
1087 |
action.addPropertyChangeListener(actionPropertyChangeListener);
|
|
1088 |
}
|
|
1089 |
firePropertyChange("action", oldValue, action);
|
|
1090 |
}
|
|
1091 |
}
|
|
1092 |
|
|
1093 |
private boolean isListener(Class c, ActionListener a) {
|
|
1094 |
boolean isListener = false;
|
|
1095 |
Object[] listeners = listenerList.getListenerList();
|
|
1096 |
for (int i = listeners.length-2; i>=0; i-=2) {
|
|
1097 |
if (listeners[i]==c && listeners[i+1]==a) {
|
|
1098 |
isListener=true;
|
|
1099 |
}
|
|
1100 |
}
|
|
1101 |
return isListener;
|
|
1102 |
}
|
|
1103 |
|
|
1104 |
/**
|
|
1105 |
* Returns the currently set <code>Action</code> for this
|
|
1106 |
* <code>ActionEvent</code> source, or <code>null</code> if no
|
|
1107 |
* <code>Action</code> is set.
|
|
1108 |
*
|
|
1109 |
* @return the <code>Action</code> for this <code>ActionEvent</code>
|
|
1110 |
* source; or <code>null</code>
|
|
1111 |
* @since 1.3
|
|
1112 |
* @see Action
|
|
1113 |
* @see #setAction
|
|
1114 |
*/
|
|
1115 |
public Action getAction() {
|
|
1116 |
return action;
|
|
1117 |
}
|
|
1118 |
|
|
1119 |
/**
|
|
1120 |
* Sets the properties on this combobox to match those in the specified
|
|
1121 |
* <code>Action</code>. Refer to <a href="Action.html#buttonActions">
|
|
1122 |
* Swing Components Supporting <code>Action</code></a> for more
|
|
1123 |
* details as to which properties this sets.
|
|
1124 |
*
|
|
1125 |
* @param a the <code>Action</code> from which to get the properties,
|
|
1126 |
* or <code>null</code>
|
|
1127 |
* @since 1.3
|
|
1128 |
* @see Action
|
|
1129 |
* @see #setAction
|
|
1130 |
*/
|
|
1131 |
protected void configurePropertiesFromAction(Action a) {
|
|
1132 |
AbstractAction.setEnabledFromAction(this, a);
|
|
1133 |
AbstractAction.setToolTipTextFromAction(this, a);
|
|
1134 |
setActionCommandFromAction(a);
|
|
1135 |
}
|
|
1136 |
|
|
1137 |
/**
|
|
1138 |
* Creates and returns a <code>PropertyChangeListener</code> that is
|
|
1139 |
* responsible for listening for changes from the specified
|
|
1140 |
* <code>Action</code> and updating the appropriate properties.
|
|
1141 |
* <p>
|
|
1142 |
* <b>Warning:</b> If you subclass this do not create an anonymous
|
|
1143 |
* inner class. If you do the lifetime of the combobox will be tied to
|
|
1144 |
* that of the <code>Action</code>.
|
|
1145 |
*
|
|
1146 |
* @param a the combobox's action
|
|
1147 |
* @since 1.3
|
|
1148 |
* @see Action
|
|
1149 |
* @see #setAction
|
|
1150 |
*/
|
|
1151 |
protected PropertyChangeListener createActionPropertyChangeListener(Action a) {
|
|
1152 |
return new ComboBoxActionPropertyChangeListener(this, a);
|
|
1153 |
}
|
|
1154 |
|
|
1155 |
/**
|
|
1156 |
* Updates the combobox's state in response to property changes in
|
|
1157 |
* associated action. This method is invoked from the
|
|
1158 |
* {@code PropertyChangeListener} returned from
|
|
1159 |
* {@code createActionPropertyChangeListener}. Subclasses do not normally
|
|
1160 |
* need to invoke this. Subclasses that support additional {@code Action}
|
|
1161 |
* properties should override this and
|
|
1162 |
* {@code configurePropertiesFromAction}.
|
|
1163 |
* <p>
|
|
1164 |
* Refer to the table at <a href="Action.html#buttonActions">
|
|
1165 |
* Swing Components Supporting <code>Action</code></a> for a list of
|
|
1166 |
* the properties this method sets.
|
|
1167 |
*
|
|
1168 |
* @param action the <code>Action</code> associated with this combobox
|
|
1169 |
* @param propertyName the name of the property that changed
|
|
1170 |
* @since 1.6
|
|
1171 |
* @see Action
|
|
1172 |
* @see #configurePropertiesFromAction
|
|
1173 |
*/
|
|
1174 |
protected void actionPropertyChanged(Action action, String propertyName) {
|
|
1175 |
if (propertyName == Action.ACTION_COMMAND_KEY) {
|
|
1176 |
setActionCommandFromAction(action);
|
|
1177 |
} else if (propertyName == "enabled") {
|
|
1178 |
AbstractAction.setEnabledFromAction(this, action);
|
|
1179 |
} else if (Action.SHORT_DESCRIPTION == propertyName) {
|
|
1180 |
AbstractAction.setToolTipTextFromAction(this, action);
|
|
1181 |
}
|
|
1182 |
}
|
|
1183 |
|
|
1184 |
private void setActionCommandFromAction(Action a) {
|
|
1185 |
setActionCommand((a != null) ?
|
|
1186 |
(String)a.getValue(Action.ACTION_COMMAND_KEY) :
|
|
1187 |
null);
|
|
1188 |
}
|
|
1189 |
|
|
1190 |
|
|
1191 |
private static class ComboBoxActionPropertyChangeListener
|
|
1192 |
extends ActionPropertyChangeListener<JComboBox> {
|
|
1193 |
ComboBoxActionPropertyChangeListener(JComboBox b, Action a) {
|
|
1194 |
super(b, a);
|
|
1195 |
}
|
|
1196 |
protected void actionPropertyChanged(JComboBox cb,
|
|
1197 |
Action action,
|
|
1198 |
PropertyChangeEvent e) {
|
|
1199 |
if (AbstractAction.shouldReconfigure(e)) {
|
|
1200 |
cb.configurePropertiesFromAction(action);
|
|
1201 |
} else {
|
|
1202 |
cb.actionPropertyChanged(action, e.getPropertyName());
|
|
1203 |
}
|
|
1204 |
}
|
|
1205 |
}
|
|
1206 |
|
|
1207 |
/**
|
|
1208 |
* Notifies all listeners that have registered interest for
|
|
1209 |
* notification on this event type.
|
|
1210 |
* @param e the event of interest
|
|
1211 |
*
|
|
1212 |
* @see EventListenerList
|
|
1213 |
*/
|
|
1214 |
protected void fireItemStateChanged(ItemEvent e) {
|
|
1215 |
// Guaranteed to return a non-null array
|
|
1216 |
Object[] listeners = listenerList.getListenerList();
|
|
1217 |
// Process the listeners last to first, notifying
|
|
1218 |
// those that are interested in this event
|
|
1219 |
for ( int i = listeners.length-2; i>=0; i-=2 ) {
|
|
1220 |
if ( listeners[i]==ItemListener.class ) {
|
|
1221 |
// Lazily create the event:
|
|
1222 |
// if (changeEvent == null)
|
|
1223 |
// changeEvent = new ChangeEvent(this);
|
|
1224 |
((ItemListener)listeners[i+1]).itemStateChanged(e);
|
|
1225 |
}
|
|
1226 |
}
|
|
1227 |
}
|
|
1228 |
|
|
1229 |
/**
|
|
1230 |
* Notifies all listeners that have registered interest for
|
|
1231 |
* notification on this event type.
|
|
1232 |
*
|
|
1233 |
* @see EventListenerList
|
|
1234 |
*/
|
|
1235 |
protected void fireActionEvent() {
|
|
1236 |
if (!firingActionEvent) {
|
|
1237 |
// Set flag to ensure that an infinite loop is not created
|
|
1238 |
firingActionEvent = true;
|
|
1239 |
ActionEvent e = null;
|
|
1240 |
// Guaranteed to return a non-null array
|
|
1241 |
Object[] listeners = listenerList.getListenerList();
|
|
1242 |
long mostRecentEventTime = EventQueue.getMostRecentEventTime();
|
|
1243 |
int modifiers = 0;
|
|
1244 |
AWTEvent currentEvent = EventQueue.getCurrentEvent();
|
|
1245 |
if (currentEvent instanceof InputEvent) {
|
|
1246 |
modifiers = ((InputEvent)currentEvent).getModifiers();
|
|
1247 |
} else if (currentEvent instanceof ActionEvent) {
|
|
1248 |
modifiers = ((ActionEvent)currentEvent).getModifiers();
|
|
1249 |
}
|
|
1250 |
// Process the listeners last to first, notifying
|
|
1251 |
// those that are interested in this event
|
|
1252 |
for ( int i = listeners.length-2; i>=0; i-=2 ) {
|
|
1253 |
if ( listeners[i]==ActionListener.class ) {
|
|
1254 |
// Lazily create the event:
|
|
1255 |
if ( e == null )
|
|
1256 |
e = new ActionEvent(this,ActionEvent.ACTION_PERFORMED,
|
|
1257 |
getActionCommand(),
|
|
1258 |
mostRecentEventTime, modifiers);
|
|
1259 |
((ActionListener)listeners[i+1]).actionPerformed(e);
|
|
1260 |
}
|
|
1261 |
}
|
|
1262 |
firingActionEvent = false;
|
|
1263 |
}
|
|
1264 |
}
|
|
1265 |
|
|
1266 |
/**
|
|
1267 |
* This protected method is implementation specific. Do not access directly
|
|
1268 |
* or override.
|
|
1269 |
*/
|
|
1270 |
protected void selectedItemChanged() {
|
|
1271 |
if (selectedItemReminder != null ) {
|
|
1272 |
fireItemStateChanged(new ItemEvent(this,ItemEvent.ITEM_STATE_CHANGED,
|
|
1273 |
selectedItemReminder,
|
|
1274 |
ItemEvent.DESELECTED));
|
|
1275 |
}
|
|
1276 |
|
|
1277 |
// set the new selected item.
|
|
1278 |
selectedItemReminder = dataModel.getSelectedItem();
|
|
1279 |
|
|
1280 |
if (selectedItemReminder != null ) {
|
|
1281 |
fireItemStateChanged(new ItemEvent(this,ItemEvent.ITEM_STATE_CHANGED,
|
|
1282 |
selectedItemReminder,
|
|
1283 |
ItemEvent.SELECTED));
|
|
1284 |
}
|
|
1285 |
}
|
|
1286 |
|
|
1287 |
/**
|
|
1288 |
* Returns an array containing the selected item.
|
|
1289 |
* This method is implemented for compatibility with
|
|
1290 |
* <code>ItemSelectable</code>.
|
|
1291 |
*
|
|
1292 |
* @return an array of <code>Objects</code> containing one
|
|
1293 |
* element -- the selected item
|
|
1294 |
*/
|
|
1295 |
public Object[] getSelectedObjects() {
|
|
1296 |
Object selectedObject = getSelectedItem();
|
|
1297 |
if ( selectedObject == null )
|
|
1298 |
return new Object[0];
|
|
1299 |
else {
|
|
1300 |
Object result[] = new Object[1];
|
|
1301 |
result[0] = selectedObject;
|
|
1302 |
return result;
|
|
1303 |
}
|
|
1304 |
}
|
|
1305 |
|
|
1306 |
/**
|
|
1307 |
* This method is public as an implementation side effect.
|
|
1308 |
* do not call or override.
|
|
1309 |
*/
|
|
1310 |
public void actionPerformed(ActionEvent e) {
|
|
1311 |
Object newItem = getEditor().getItem();
|
|
1312 |
setPopupVisible(false);
|
|
1313 |
getModel().setSelectedItem(newItem);
|
|
1314 |
String oldCommand = getActionCommand();
|
|
1315 |
setActionCommand("comboBoxEdited");
|
|
1316 |
fireActionEvent();
|
|
1317 |
setActionCommand(oldCommand);
|
|
1318 |
}
|
|
1319 |
|
|
1320 |
/**
|
|
1321 |
* This method is public as an implementation side effect.
|
|
1322 |
* do not call or override.
|
|
1323 |
*/
|
|
1324 |
public void contentsChanged(ListDataEvent e) {
|
|
1325 |
Object oldSelection = selectedItemReminder;
|
|
1326 |
Object newSelection = dataModel.getSelectedItem();
|
|
1327 |
if (oldSelection == null || !oldSelection.equals(newSelection)) {
|
|
1328 |
selectedItemChanged();
|
|
1329 |
if (!selectingItem) {
|
|
1330 |
fireActionEvent();
|
|
1331 |
}
|
|
1332 |
}
|
|
1333 |
}
|
|
1334 |
|
|
1335 |
/**
|
|
1336 |
* This method is public as an implementation side effect.
|
|
1337 |
* do not call or override.
|
|
1338 |
*/
|
|
1339 |
public void intervalAdded(ListDataEvent e) {
|
|
1340 |
if (selectedItemReminder != dataModel.getSelectedItem()) {
|
|
1341 |
selectedItemChanged();
|
|
1342 |
}
|
|
1343 |
}
|
|
1344 |
|
|
1345 |
/**
|
|
1346 |
* This method is public as an implementation side effect.
|
|
1347 |
* do not call or override.
|
|
1348 |
*/
|
|
1349 |
public void intervalRemoved(ListDataEvent e) {
|
|
1350 |
contentsChanged(e);
|
|
1351 |
}
|
|
1352 |
|
|
1353 |
/**
|
|
1354 |
* Selects the list item that corresponds to the specified keyboard
|
|
1355 |
* character and returns true, if there is an item corresponding
|
|
1356 |
* to that character. Otherwise, returns false.
|
|
1357 |
*
|
|
1358 |
* @param keyChar a char, typically this is a keyboard key
|
|
1359 |
* typed by the user
|
|
1360 |
*/
|
|
1361 |
public boolean selectWithKeyChar(char keyChar) {
|
|
1362 |
int index;
|
|
1363 |
|
|
1364 |
if ( keySelectionManager == null )
|
|
1365 |
keySelectionManager = createDefaultKeySelectionManager();
|
|
1366 |
|
|
1367 |
index = keySelectionManager.selectionForKey(keyChar,getModel());
|
|
1368 |
if ( index != -1 ) {
|
|
1369 |
setSelectedIndex(index);
|
|
1370 |
return true;
|
|
1371 |
}
|
|
1372 |
else
|
|
1373 |
return false;
|
|
1374 |
}
|
|
1375 |
|
|
1376 |
/**
|
|
1377 |
* Enables the combo box so that items can be selected. When the
|
|
1378 |
* combo box is disabled, items cannot be selected and values
|
|
1379 |
* cannot be typed into its field (if it is editable).
|
|
1380 |
*
|
|
1381 |
* @param b a boolean value, where true enables the component and
|
|
1382 |
* false disables it
|
|
1383 |
* @beaninfo
|
|
1384 |
* bound: true
|
|
1385 |
* preferred: true
|
|
1386 |
* description: Whether the combo box is enabled.
|
|
1387 |
*/
|
|
1388 |
public void setEnabled(boolean b) {
|
|
1389 |
super.setEnabled(b);
|
|
1390 |
firePropertyChange( "enabled", !isEnabled(), isEnabled() );
|
|
1391 |
}
|
|
1392 |
|
|
1393 |
/**
|
|
1394 |
* Initializes the editor with the specified item.
|
|
1395 |
*
|
|
1396 |
* @param anEditor the <code>ComboBoxEditor</code> that displays
|
|
1397 |
* the list item in the
|
|
1398 |
* combo box field and allows it to be edited
|
|
1399 |
* @param anItem the object to display and edit in the field
|
|
1400 |
*/
|
|
1401 |
public void configureEditor(ComboBoxEditor anEditor, Object anItem) {
|
|
1402 |
anEditor.setItem(anItem);
|
|
1403 |
}
|
|
1404 |
|
|
1405 |
/**
|
|
1406 |
* Handles <code>KeyEvent</code>s, looking for the Tab key.
|
|
1407 |
* If the Tab key is found, the popup window is closed.
|
|
1408 |
*
|
|
1409 |
* @param e the <code>KeyEvent</code> containing the keyboard
|
|
1410 |
* key that was pressed
|
|
1411 |
*/
|
|
1412 |
public void processKeyEvent(KeyEvent e) {
|
|
1413 |
if ( e.getKeyCode() == KeyEvent.VK_TAB ) {
|
|
1414 |
hidePopup();
|
|
1415 |
}
|
|
1416 |
super.processKeyEvent(e);
|
|
1417 |
}
|
|
1418 |
|
|
1419 |
/**
|
|
1420 |
* Sets the object that translates a keyboard character into a list
|
|
1421 |
* selection. Typically, the first selection with a matching first
|
|
1422 |
* character becomes the selected item.
|
|
1423 |
*
|
|
1424 |
* @beaninfo
|
|
1425 |
* expert: true
|
|
1426 |
* description: The objects that changes the selection when a key is pressed.
|
|
1427 |
*/
|
|
1428 |
public void setKeySelectionManager(KeySelectionManager aManager) {
|
|
1429 |
keySelectionManager = aManager;
|
|
1430 |
}
|
|
1431 |
|
|
1432 |
/**
|
|
1433 |
* Returns the list's key-selection manager.
|
|
1434 |
*
|
|
1435 |
* @return the <code>KeySelectionManager</code> currently in use
|
|
1436 |
*/
|
|
1437 |
public KeySelectionManager getKeySelectionManager() {
|
|
1438 |
return keySelectionManager;
|
|
1439 |
}
|
|
1440 |
|
|
1441 |
/* Accessing the model */
|
|
1442 |
/**
|
|
1443 |
* Returns the number of items in the list.
|
|
1444 |
*
|
|
1445 |
* @return an integer equal to the number of items in the list
|
|
1446 |
*/
|
|
1447 |
public int getItemCount() {
|
|
1448 |
return dataModel.getSize();
|
|
1449 |
}
|
|
1450 |
|
|
1451 |
/**
|
|
1452 |
* Returns the list item at the specified index. If <code>index</code>
|
|
1453 |
* is out of range (less than zero or greater than or equal to size)
|
|
1454 |
* it will return <code>null</code>.
|
|
1455 |
*
|
|
1456 |
* @param index an integer indicating the list position, where the first
|
|
1457 |
* item starts at zero
|
|
1458 |
* @return the <code>Object</code> at that list position; or
|
|
1459 |
* <code>null</code> if out of range
|
|
1460 |
*/
|
|
1461 |
public Object getItemAt(int index) {
|
|
1462 |
return dataModel.getElementAt(index);
|
|
1463 |
}
|
|
1464 |
|
|
1465 |
/**
|
|
1466 |
* Returns an instance of the default key-selection manager.
|
|
1467 |
*
|
|
1468 |
* @return the <code>KeySelectionManager</code> currently used by the list
|
|
1469 |
* @see #setKeySelectionManager
|
|
1470 |
*/
|
|
1471 |
protected KeySelectionManager createDefaultKeySelectionManager() {
|
|
1472 |
return new DefaultKeySelectionManager();
|
|
1473 |
}
|
|
1474 |
|
|
1475 |
|
|
1476 |
/**
|
|
1477 |
* The interface that defines a <code>KeySelectionManager</code>.
|
|
1478 |
* To qualify as a <code>KeySelectionManager</code>,
|
|
1479 |
* the class needs to implement the method
|
|
1480 |
* that identifies the list index given a character and the
|
|
1481 |
* combo box data model.
|
|
1482 |
*/
|
|
1483 |
public interface KeySelectionManager {
|
|
1484 |
/** Given <code>aKey</code> and the model, returns the row
|
|
1485 |
* that should become selected. Return -1 if no match was
|
|
1486 |
* found.
|
|
1487 |
*
|
|
1488 |
* @param aKey a char value, usually indicating a keyboard key that
|
|
1489 |
* was pressed
|
|
1490 |
* @param aModel a ComboBoxModel -- the component's data model, containing
|
|
1491 |
* the list of selectable items
|
|
1492 |
* @return an int equal to the selected row, where 0 is the
|
|
1493 |
* first item and -1 is none.
|
|
1494 |
*/
|
|
1495 |
int selectionForKey(char aKey,ComboBoxModel aModel);
|
|
1496 |
}
|
|
1497 |
|
|
1498 |
class DefaultKeySelectionManager implements KeySelectionManager, Serializable {
|
|
1499 |
public int selectionForKey(char aKey,ComboBoxModel aModel) {
|
|
1500 |
int i,c;
|
|
1501 |
int currentSelection = -1;
|
|
1502 |
Object selectedItem = aModel.getSelectedItem();
|
|
1503 |
String v;
|
|
1504 |
String pattern;
|
|
1505 |
|
|
1506 |
if ( selectedItem != null ) {
|
|
1507 |
for ( i=0,c=aModel.getSize();i<c;i++ ) {
|
|
1508 |
if ( selectedItem == aModel.getElementAt(i) ) {
|
|
1509 |
currentSelection = i;
|
|
1510 |
break;
|
|
1511 |
}
|
|
1512 |
}
|
|
1513 |
}
|
|
1514 |
|
|
1515 |
pattern = ("" + aKey).toLowerCase();
|
|
1516 |
aKey = pattern.charAt(0);
|
|
1517 |
|
|
1518 |
for ( i = ++currentSelection, c = aModel.getSize() ; i < c ; i++ ) {
|
|
1519 |
Object elem = aModel.getElementAt(i);
|
|
1520 |
if (elem != null && elem.toString() != null) {
|
|
1521 |
v = elem.toString().toLowerCase();
|
|
1522 |
if ( v.length() > 0 && v.charAt(0) == aKey )
|
|
1523 |
return i;
|
|
1524 |
}
|
|
1525 |
}
|
|
1526 |
|
|
1527 |
for ( i = 0 ; i < currentSelection ; i ++ ) {
|
|
1528 |
Object elem = aModel.getElementAt(i);
|
|
1529 |
if (elem != null && elem.toString() != null) {
|
|
1530 |
v = elem.toString().toLowerCase();
|
|
1531 |
if ( v.length() > 0 && v.charAt(0) == aKey )
|
|
1532 |
return i;
|
|
1533 |
}
|
|
1534 |
}
|
|
1535 |
return -1;
|
|
1536 |
}
|
|
1537 |
}
|
|
1538 |
|
|
1539 |
|
|
1540 |
/**
|
|
1541 |
* See <code>readObject</code> and <code>writeObject</code> in
|
|
1542 |
* <code>JComponent</code> for more
|
|
1543 |
* information about serialization in Swing.
|
|
1544 |
*/
|
|
1545 |
private void writeObject(ObjectOutputStream s) throws IOException {
|
|
1546 |
s.defaultWriteObject();
|
|
1547 |
if (getUIClassID().equals(uiClassID)) {
|
|
1548 |
byte count = JComponent.getWriteObjCounter(this);
|
|
1549 |
JComponent.setWriteObjCounter(this, --count);
|
|
1550 |
if (count == 0 && ui != null) {
|
|
1551 |
ui.installUI(this);
|
|
1552 |
}
|
|
1553 |
}
|
|
1554 |
}
|
|
1555 |
|
|
1556 |
|
|
1557 |
/**
|
|
1558 |
* Returns a string representation of this <code>JComboBox</code>.
|
|
1559 |
* This method is intended to be used only for debugging purposes,
|
|
1560 |
* and the content and format of the returned string may vary between
|
|
1561 |
* implementations. The returned string may be empty but may not
|
|
1562 |
* be <code>null</code>.
|
|
1563 |
*
|
|
1564 |
* @return a string representation of this <code>JComboBox</code>
|
|
1565 |
*/
|
|
1566 |
protected String paramString() {
|
|
1567 |
String selectedItemReminderString = (selectedItemReminder != null ?
|
|
1568 |
selectedItemReminder.toString() :
|
|
1569 |
"");
|
|
1570 |
String isEditableString = (isEditable ? "true" : "false");
|
|
1571 |
String lightWeightPopupEnabledString = (lightWeightPopupEnabled ?
|
|
1572 |
"true" : "false");
|
|
1573 |
|
|
1574 |
return super.paramString() +
|
|
1575 |
",isEditable=" + isEditableString +
|
|
1576 |
",lightWeightPopupEnabled=" + lightWeightPopupEnabledString +
|
|
1577 |
",maximumRowCount=" + maximumRowCount +
|
|
1578 |
",selectedItemReminder=" + selectedItemReminderString;
|
|
1579 |
}
|
|
1580 |
|
|
1581 |
|
|
1582 |
///////////////////
|
|
1583 |
// Accessibility support
|
|
1584 |
///////////////////
|
|
1585 |
|
|
1586 |
/**
|
|
1587 |
* Gets the AccessibleContext associated with this JComboBox.
|
|
1588 |
* For combo boxes, the AccessibleContext takes the form of an
|
|
1589 |
* AccessibleJComboBox.
|
|
1590 |
* A new AccessibleJComboBox instance is created if necessary.
|
|
1591 |
*
|
|
1592 |
* @return an AccessibleJComboBox that serves as the
|
|
1593 |
* AccessibleContext of this JComboBox
|
|
1594 |
*/
|
|
1595 |
public AccessibleContext getAccessibleContext() {
|
|
1596 |
if ( accessibleContext == null ) {
|
|
1597 |
accessibleContext = new AccessibleJComboBox();
|
|
1598 |
}
|
|
1599 |
return accessibleContext;
|
|
1600 |
}
|
|
1601 |
|
|
1602 |
/**
|
|
1603 |
* This class implements accessibility support for the
|
|
1604 |
* <code>JComboBox</code> class. It provides an implementation of the
|
|
1605 |
* Java Accessibility API appropriate to Combo Box user-interface elements.
|
|
1606 |
* <p>
|
|
1607 |
* <strong>Warning:</strong>
|
|
1608 |
* Serialized objects of this class will not be compatible with
|
|
1609 |
* future Swing releases. The current serialization support is
|
|
1610 |
* appropriate for short term storage or RMI between applications running
|
|
1611 |
* the same version of Swing. As of 1.4, support for long term storage
|
|
1612 |
* of all JavaBeans<sup><font size="-2">TM</font></sup>
|
|
1613 |
* has been added to the <code>java.beans</code> package.
|
|
1614 |
* Please see {@link java.beans.XMLEncoder}.
|
|
1615 |
*/
|
|
1616 |
protected class AccessibleJComboBox extends AccessibleJComponent
|
|
1617 |
implements AccessibleAction, AccessibleSelection {
|
|
1618 |
|
|
1619 |
|
|
1620 |
private JList popupList; // combo box popup list
|
|
1621 |
private Accessible previousSelectedAccessible = null;
|
|
1622 |
|
|
1623 |
/**
|
|
1624 |
* Returns an AccessibleJComboBox instance
|
|
1625 |
* @since 1.4
|
|
1626 |
*/
|
|
1627 |
public AccessibleJComboBox() {
|
|
1628 |
// set the combo box editor's accessible name and description
|
|
1629 |
JComboBox.this.addPropertyChangeListener(new AccessibleJComboBoxPropertyChangeListener());
|
|
1630 |
setEditorNameAndDescription();
|
|
1631 |
|
|
1632 |
// Get the popup list
|
|
1633 |
Accessible a = getUI().getAccessibleChild(JComboBox.this, 0);
|
|
1634 |
if (a instanceof javax.swing.plaf.basic.ComboPopup) {
|
|
1635 |
// Listen for changes to the popup menu selection.
|
|
1636 |
popupList = ((javax.swing.plaf.basic.ComboPopup)a).getList();
|
|
1637 |
popupList.addListSelectionListener(
|
|
1638 |
new AccessibleJComboBoxListSelectionListener());
|
|
1639 |
}
|
|
1640 |
// Listen for popup menu show/hide events
|
|
1641 |
JComboBox.this.addPopupMenuListener(
|
|
1642 |
new AccessibleJComboBoxPopupMenuListener());
|
|
1643 |
}
|
|
1644 |
|
|
1645 |
/*
|
|
1646 |
* JComboBox PropertyChangeListener
|
|
1647 |
*/
|
|
1648 |
private class AccessibleJComboBoxPropertyChangeListener
|
|
1649 |
implements PropertyChangeListener {
|
|
1650 |
|
|
1651 |
public void propertyChange(PropertyChangeEvent e) {
|
|
1652 |
if (e.getPropertyName() == "editor") {
|
|
1653 |
// set the combo box editor's accessible name
|
|
1654 |
// and description
|
|
1655 |
setEditorNameAndDescription();
|
|
1656 |
}
|
|
1657 |
}
|
|
1658 |
}
|
|
1659 |
|
|
1660 |
/*
|
|
1661 |
* Sets the combo box editor's accessible name and descripton
|
|
1662 |
*/
|
|
1663 |
private void setEditorNameAndDescription() {
|
|
1664 |
ComboBoxEditor editor = JComboBox.this.getEditor();
|
|
1665 |
if (editor != null) {
|
|
1666 |
Component comp = editor.getEditorComponent();
|
|
1667 |
if (comp instanceof Accessible) {
|
|
1668 |
AccessibleContext ac = ((Accessible)comp).getAccessibleContext();
|
|
1669 |
if (ac != null) { // may be null
|
|
1670 |
ac.setAccessibleName(getAccessibleName());
|
|
1671 |
ac.setAccessibleDescription(getAccessibleDescription());
|
|
1672 |
}
|
|
1673 |
}
|
|
1674 |
}
|
|
1675 |
}
|
|
1676 |
|
|
1677 |
/*
|
|
1678 |
* Listener for combo box popup menu
|
|
1679 |
* TIGER - 4669379 4894434
|
|
1680 |
*/
|
|
1681 |
private class AccessibleJComboBoxPopupMenuListener
|
|
1682 |
implements PopupMenuListener {
|
|
1683 |
|
|
1684 |
/**
|
|
1685 |
* This method is called before the popup menu becomes visible
|
|
1686 |
*/
|
|
1687 |
public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
|
|
1688 |
// save the initial selection
|
|
1689 |
if (popupList == null) {
|
|
1690 |
return;
|
|
1691 |
}
|
|
1692 |
int selectedIndex = popupList.getSelectedIndex();
|
|
1693 |
if (selectedIndex < 0) {
|
|
1694 |
return;
|
|
1695 |
}
|
|
1696 |
previousSelectedAccessible =
|
|
1697 |
popupList.getAccessibleContext().getAccessibleChild(selectedIndex);
|
|
1698 |
}
|
|
1699 |
|
|
1700 |
/**
|
|
1701 |
* This method is called before the popup menu becomes invisible
|
|
1702 |
* Note that a JPopupMenu can become invisible any time
|
|
1703 |
*/
|
|
1704 |
public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
|
|
1705 |
// ignore
|
|
1706 |
}
|
|
1707 |
|
|
1708 |
/**
|
|
1709 |
* This method is called when the popup menu is canceled
|
|
1710 |
*/
|
|
1711 |
public void popupMenuCanceled(PopupMenuEvent e) {
|
|
1712 |
// ignore
|
|
1713 |
}
|
|
1714 |
}
|
|
1715 |
|
|
1716 |
/*
|
|
1717 |
* Handles changes to the popup list selection.
|
|
1718 |
* TIGER - 4669379 4894434 4933143
|
|
1719 |
*/
|
|
1720 |
private class AccessibleJComboBoxListSelectionListener
|
|
1721 |
implements ListSelectionListener {
|
|
1722 |
|
|
1723 |
public void valueChanged(ListSelectionEvent e) {
|
|
1724 |
if (popupList == null) {
|
|
1725 |
return;
|
|
1726 |
}
|
|
1727 |
|
|
1728 |
// Get the selected popup list item.
|
|
1729 |
int selectedIndex = popupList.getSelectedIndex();
|
|
1730 |
if (selectedIndex < 0) {
|
|
1731 |
return;
|
|
1732 |
}
|
|
1733 |
Accessible selectedAccessible =
|
|
1734 |
popupList.getAccessibleContext().getAccessibleChild(selectedIndex);
|
|
1735 |
if (selectedAccessible == null) {
|
|
1736 |
return;
|
|
1737 |
}
|
|
1738 |
|
|
1739 |
// Fire a FOCUSED lost PropertyChangeEvent for the
|
|
1740 |
// previously selected list item.
|
|
1741 |
PropertyChangeEvent pce = null;
|
|
1742 |
|
|
1743 |
if (previousSelectedAccessible != null) {
|
|
1744 |
pce = new PropertyChangeEvent(previousSelectedAccessible,
|
|
1745 |
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
1746 |
AccessibleState.FOCUSED, null);
|
|
1747 |
firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
1748 |
null, pce);
|
|
1749 |
}
|
|
1750 |
// Fire a FOCUSED gained PropertyChangeEvent for the
|
|
1751 |
// currently selected list item.
|
|
1752 |
pce = new PropertyChangeEvent(selectedAccessible,
|
|
1753 |
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
1754 |
null, AccessibleState.FOCUSED);
|
|
1755 |
firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
1756 |
null, pce);
|
|
1757 |
|
|
1758 |
// Fire the ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY event
|
|
1759 |
// for the combo box.
|
|
1760 |
firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY,
|
|
1761 |
previousSelectedAccessible, selectedAccessible);
|
|
1762 |
|
|
1763 |
// Save the previous selection.
|
|
1764 |
previousSelectedAccessible = selectedAccessible;
|
|
1765 |
}
|
|
1766 |
}
|
|
1767 |
|
|
1768 |
|
|
1769 |
/**
|
|
1770 |
* Returns the number of accessible children in the object. If all
|
|
1771 |
* of the children of this object implement Accessible, than this
|
|
1772 |
* method should return the number of children of this object.
|
|
1773 |
*
|
|
1774 |
* @return the number of accessible children in the object.
|
|
1775 |
*/
|
|
1776 |
public int getAccessibleChildrenCount() {
|
|
1777 |
// Always delegate to the UI if it exists
|
|
1778 |
if (ui != null) {
|
|
1779 |
return ui.getAccessibleChildrenCount(JComboBox.this);
|
|
1780 |
} else {
|
|
1781 |
return super.getAccessibleChildrenCount();
|
|
1782 |
}
|
|
1783 |
}
|
|
1784 |
|
|
1785 |
/**
|
|
1786 |
* Returns the nth Accessible child of the object.
|
|
1787 |
* The child at index zero represents the popup.
|
|
1788 |
* If the combo box is editable, the child at index one
|
|
1789 |
* represents the editor.
|
|
1790 |
*
|
|
1791 |
* @param i zero-based index of child
|
|
1792 |
* @return the nth Accessible child of the object
|
|
1793 |
*/
|
|
1794 |
public Accessible getAccessibleChild(int i) {
|
|
1795 |
// Always delegate to the UI if it exists
|
|
1796 |
if (ui != null) {
|
|
1797 |
return ui.getAccessibleChild(JComboBox.this, i);
|
|
1798 |
} else {
|
|
1799 |
return super.getAccessibleChild(i);
|
|
1800 |
}
|
|
1801 |
}
|
|
1802 |
|
|
1803 |
/**
|
|
1804 |
* Get the role of this object.
|
|
1805 |
*
|
|
1806 |
* @return an instance of AccessibleRole describing the role of the
|
|
1807 |
* object
|
|
1808 |
* @see AccessibleRole
|
|
1809 |
*/
|
|
1810 |
public AccessibleRole getAccessibleRole() {
|
|
1811 |
return AccessibleRole.COMBO_BOX;
|
|
1812 |
}
|
|
1813 |
|
|
1814 |
/**
|
|
1815 |
* Gets the state set of this object. The AccessibleStateSet of
|
|
1816 |
* an object is composed of a set of unique AccessibleStates.
|
|
1817 |
* A change in the AccessibleStateSet of an object will cause a
|
|
1818 |
* PropertyChangeEvent to be fired for the ACCESSIBLE_STATE_PROPERTY
|
|
1819 |
* property.
|
|
1820 |
*
|
|
1821 |
* @return an instance of AccessibleStateSet containing the
|
|
1822 |
* current state set of the object
|
|
1823 |
* @see AccessibleStateSet
|
|
1824 |
* @see AccessibleState
|
|
1825 |
* @see #addPropertyChangeListener
|
|
1826 |
*
|
|
1827 |
*/
|
|
1828 |
public AccessibleStateSet getAccessibleStateSet() {
|
|
1829 |
// TIGER - 4489748
|
|
1830 |
AccessibleStateSet ass = super.getAccessibleStateSet();
|
|
1831 |
if (ass == null) {
|
|
1832 |
ass = new AccessibleStateSet();
|
|
1833 |
}
|
|
1834 |
if (JComboBox.this.isPopupVisible()) {
|
|
1835 |
ass.add(AccessibleState.EXPANDED);
|
|
1836 |
} else {
|
|
1837 |
ass.add(AccessibleState.COLLAPSED);
|
|
1838 |
}
|
|
1839 |
return ass;
|
|
1840 |
}
|
|
1841 |
|
|
1842 |
/**
|
|
1843 |
* Get the AccessibleAction associated with this object. In the
|
|
1844 |
* implementation of the Java Accessibility API for this class,
|
|
1845 |
* return this object, which is responsible for implementing the
|
|
1846 |
* AccessibleAction interface on behalf of itself.
|
|
1847 |
*
|
|
1848 |
* @return this object
|
|
1849 |
*/
|
|
1850 |
public AccessibleAction getAccessibleAction() {
|
|
1851 |
return this;
|
|
1852 |
}
|
|
1853 |
|
|
1854 |
/**
|
|
1855 |
* Return a description of the specified action of the object.
|
|
1856 |
*
|
|
1857 |
* @param i zero-based index of the actions
|
|
1858 |
*/
|
|
1859 |
public String getAccessibleActionDescription(int i) {
|
|
1860 |
if (i == 0) {
|
|
1861 |
return UIManager.getString("ComboBox.togglePopupText");
|
|
1862 |
}
|
|
1863 |
else {
|
|
1864 |
return null;
|
|
1865 |
}
|
|
1866 |
}
|
|
1867 |
|
|
1868 |
/**
|
|
1869 |
* Returns the number of Actions available in this object. The
|
|
1870 |
* default behavior of a combo box is to have one action.
|
|
1871 |
*
|
|
1872 |
* @return 1, the number of Actions in this object
|
|
1873 |
*/
|
|
1874 |
public int getAccessibleActionCount() {
|
|
1875 |
return 1;
|
|
1876 |
}
|
|
1877 |
|
|
1878 |
/**
|
|
1879 |
* Perform the specified Action on the object
|
|
1880 |
*
|
|
1881 |
* @param i zero-based index of actions
|
|
1882 |
* @return true if the the action was performed; else false.
|
|
1883 |
*/
|
|
1884 |
public boolean doAccessibleAction(int i) {
|
|
1885 |
if (i == 0) {
|
|
1886 |
setPopupVisible(!isPopupVisible());
|
|
1887 |
return true;
|
|
1888 |
}
|
|
1889 |
else {
|
|
1890 |
return false;
|
|
1891 |
}
|
|
1892 |
}
|
|
1893 |
|
|
1894 |
|
|
1895 |
/**
|
|
1896 |
* Get the AccessibleSelection associated with this object. In the
|
|
1897 |
* implementation of the Java Accessibility API for this class,
|
|
1898 |
* return this object, which is responsible for implementing the
|
|
1899 |
* AccessibleSelection interface on behalf of itself.
|
|
1900 |
*
|
|
1901 |
* @return this object
|
|
1902 |
*/
|
|
1903 |
public AccessibleSelection getAccessibleSelection() {
|
|
1904 |
return this;
|
|
1905 |
}
|
|
1906 |
|
|
1907 |
/**
|
|
1908 |
* Returns the number of Accessible children currently selected.
|
|
1909 |
* If no children are selected, the return value will be 0.
|
|
1910 |
*
|
|
1911 |
* @return the number of items currently selected.
|
|
1912 |
* @since 1.3
|
|
1913 |
*/
|
|
1914 |
public int getAccessibleSelectionCount() {
|
|
1915 |
Object o = JComboBox.this.getSelectedItem();
|
|
1916 |
if (o != null) {
|
|
1917 |
return 1;
|
|
1918 |
} else {
|
|
1919 |
return 0;
|
|
1920 |
}
|
|
1921 |
}
|
|
1922 |
|
|
1923 |
/**
|
|
1924 |
* Returns an Accessible representing the specified selected child
|
|
1925 |
* in the popup. If there isn't a selection, or there are
|
|
1926 |
* fewer children selected than the integer passed in, the return
|
|
1927 |
* value will be null.
|
|
1928 |
* <p>Note that the index represents the i-th selected child, which
|
|
1929 |
* is different from the i-th child.
|
|
1930 |
*
|
|
1931 |
* @param i the zero-based index of selected children
|
|
1932 |
* @return the i-th selected child
|
|
1933 |
* @see #getAccessibleSelectionCount
|
|
1934 |
* @since 1.3
|
|
1935 |
*/
|
|
1936 |
public Accessible getAccessibleSelection(int i) {
|
|
1937 |
// Get the popup
|
|
1938 |
Accessible a =
|
|
1939 |
JComboBox.this.getUI().getAccessibleChild(JComboBox.this, 0);
|
|
1940 |
if (a != null &&
|
|
1941 |
a instanceof javax.swing.plaf.basic.ComboPopup) {
|
|
1942 |
|
|
1943 |
// get the popup list
|
|
1944 |
JList list = ((javax.swing.plaf.basic.ComboPopup)a).getList();
|
|
1945 |
|
|
1946 |
// return the i-th selection in the popup list
|
|
1947 |
AccessibleContext ac = list.getAccessibleContext();
|
|
1948 |
if (ac != null) {
|
|
1949 |
AccessibleSelection as = ac.getAccessibleSelection();
|
|
1950 |
if (as != null) {
|
|
1951 |
return as.getAccessibleSelection(i);
|
|
1952 |
}
|
|
1953 |
}
|
|
1954 |
}
|
|
1955 |
return null;
|
|
1956 |
}
|
|
1957 |
|
|
1958 |
/**
|
|
1959 |
* Determines if the current child of this object is selected.
|
|
1960 |
*
|
|
1961 |
* @return true if the current child of this object is selected;
|
|
1962 |
* else false
|
|
1963 |
* @param i the zero-based index of the child in this Accessible
|
|
1964 |
* object.
|
|
1965 |
* @see AccessibleContext#getAccessibleChild
|
|
1966 |
* @since 1.3
|
|
1967 |
*/
|
|
1968 |
public boolean isAccessibleChildSelected(int i) {
|
|
1969 |
return JComboBox.this.getSelectedIndex() == i;
|
|
1970 |
}
|
|
1971 |
|
|
1972 |
/**
|
|
1973 |
* Adds the specified Accessible child of the object to the object's
|
|
1974 |
* selection. If the object supports multiple selections,
|
|
1975 |
* the specified child is added to any existing selection, otherwise
|
|
1976 |
* it replaces any existing selection in the object. If the
|
|
1977 |
* specified child is already selected, this method has no effect.
|
|
1978 |
*
|
|
1979 |
* @param i the zero-based index of the child
|
|
1980 |
* @see AccessibleContext#getAccessibleChild
|
|
1981 |
* @since 1.3
|
|
1982 |
*/
|
|
1983 |
public void addAccessibleSelection(int i) {
|
|
1984 |
// TIGER - 4856195
|
|
1985 |
clearAccessibleSelection();
|
|
1986 |
JComboBox.this.setSelectedIndex(i);
|
|
1987 |
}
|
|
1988 |
|
|
1989 |
/**
|
|
1990 |
* Removes the specified child of the object from the object's
|
|
1991 |
* selection. If the specified item isn't currently selected, this
|
|
1992 |
* method has no effect.
|
|
1993 |
*
|
|
1994 |
* @param i the zero-based index of the child
|
|
1995 |
* @see AccessibleContext#getAccessibleChild
|
|
1996 |
* @since 1.3
|
|
1997 |
*/
|
|
1998 |
public void removeAccessibleSelection(int i) {
|
|
1999 |
if (JComboBox.this.getSelectedIndex() == i) {
|
|
2000 |
clearAccessibleSelection();
|
|
2001 |
}
|
|
2002 |
}
|
|
2003 |
|
|
2004 |
/**
|
|
2005 |
* Clears the selection in the object, so that no children in the
|
|
2006 |
* object are selected.
|
|
2007 |
* @since 1.3
|
|
2008 |
*/
|
|
2009 |
public void clearAccessibleSelection() {
|
|
2010 |
JComboBox.this.setSelectedIndex(-1);
|
|
2011 |
}
|
|
2012 |
|
|
2013 |
/**
|
|
2014 |
* Causes every child of the object to be selected
|
|
2015 |
* if the object supports multiple selections.
|
|
2016 |
* @since 1.3
|
|
2017 |
*/
|
|
2018 |
public void selectAllAccessibleSelection() {
|
|
2019 |
// do nothing since multiple selection is not supported
|
|
2020 |
}
|
|
2021 |
|
|
2022 |
// public Accessible getAccessibleAt(Point p) {
|
|
2023 |
// Accessible a = getAccessibleChild(1);
|
|
2024 |
// if ( a != null ) {
|
|
2025 |
// return a; // the editor
|
|
2026 |
// }
|
|
2027 |
// else {
|
|
2028 |
// return getAccessibleChild(0); // the list
|
|
2029 |
// }
|
|
2030 |
// }
|
|
2031 |
private EditorAccessibleContext editorAccessibleContext = null;
|
|
2032 |
|
|
2033 |
private class AccessibleEditor implements Accessible {
|
|
2034 |
public AccessibleContext getAccessibleContext() {
|
|
2035 |
if (editorAccessibleContext == null) {
|
|
2036 |
Component c = JComboBox.this.getEditor().getEditorComponent();
|
|
2037 |
if (c instanceof Accessible) {
|
|
2038 |
editorAccessibleContext =
|
|
2039 |
new EditorAccessibleContext((Accessible)c);
|
|
2040 |
}
|
|
2041 |
}
|
|
2042 |
return editorAccessibleContext;
|
|
2043 |
}
|
|
2044 |
}
|
|
2045 |
|
|
2046 |
/*
|
|
2047 |
* Wrapper class for the AccessibleContext implemented by the
|
|
2048 |
* combo box editor. Delegates all method calls except
|
|
2049 |
* getAccessibleIndexInParent to the editor. The
|
|
2050 |
* getAccessibleIndexInParent method returns the selected
|
|
2051 |
* index in the combo box.
|
|
2052 |
*/
|
|
2053 |
private class EditorAccessibleContext extends AccessibleContext {
|
|
2054 |
|
|
2055 |
private AccessibleContext ac;
|
|
2056 |
|
|
2057 |
private EditorAccessibleContext() {
|
|
2058 |
}
|
|
2059 |
|
|
2060 |
/*
|
|
2061 |
* @param a the AccessibleContext implemented by the
|
|
2062 |
* combo box editor
|
|
2063 |
*/
|
|
2064 |
EditorAccessibleContext(Accessible a) {
|
|
2065 |
this.ac = a.getAccessibleContext();
|
|
2066 |
}
|
|
2067 |
|
|
2068 |
/**
|
|
2069 |
* Gets the accessibleName property of this object. The accessibleName
|
|
2070 |
* property of an object is a localized String that designates the purpose
|
|
2071 |
* of the object. For example, the accessibleName property of a label
|
|
2072 |
* or button might be the text of the label or button itself. In the
|
|
2073 |
* case of an object that doesn't display its name, the accessibleName
|
|
2074 |
* should still be set. For example, in the case of a text field used
|
|
2075 |
* to enter the name of a city, the accessibleName for the en_US locale
|
|
2076 |
* could be 'city.'
|
|
2077 |
*
|
|
2078 |
* @return the localized name of the object; null if this
|
|
2079 |
* object does not have a name
|
|
2080 |
*
|
|
2081 |
* @see #setAccessibleName
|
|
2082 |
*/
|
|
2083 |
public String getAccessibleName() {
|
|
2084 |
return ac.getAccessibleName();
|
|
2085 |
}
|
|
2086 |
|
|
2087 |
/**
|
|
2088 |
* Sets the localized accessible name of this object. Changing the
|
|
2089 |
* name will cause a PropertyChangeEvent to be fired for the
|
|
2090 |
* ACCESSIBLE_NAME_PROPERTY property.
|
|
2091 |
*
|
|
2092 |
* @param s the new localized name of the object.
|
|
2093 |
*
|
|
2094 |
* @see #getAccessibleName
|
|
2095 |
* @see #addPropertyChangeListener
|
|
2096 |
*
|
|
2097 |
* @beaninfo
|
|
2098 |
* preferred: true
|
|
2099 |
* description: Sets the accessible name for the component.
|
|
2100 |
*/
|
|
2101 |
public void setAccessibleName(String s) {
|
|
2102 |
ac.setAccessibleName(s);
|
|
2103 |
}
|
|
2104 |
|
|
2105 |
/**
|
|
2106 |
* Gets the accessibleDescription property of this object. The
|
|
2107 |
* accessibleDescription property of this object is a short localized
|
|
2108 |
* phrase describing the purpose of the object. For example, in the
|
|
2109 |
* case of a 'Cancel' button, the accessibleDescription could be
|
|
2110 |
* 'Ignore changes and close dialog box.'
|
|
2111 |
*
|
|
2112 |
* @return the localized description of the object; null if
|
|
2113 |
* this object does not have a description
|
|
2114 |
*
|
|
2115 |
* @see #setAccessibleDescription
|
|
2116 |
*/
|
|
2117 |
public String getAccessibleDescription() {
|
|
2118 |
return ac.getAccessibleDescription();
|
|
2119 |
}
|
|
2120 |
|
|
2121 |
/**
|
|
2122 |
* Sets the accessible description of this object. Changing the
|
|
2123 |
* name will cause a PropertyChangeEvent to be fired for the
|
|
2124 |
* ACCESSIBLE_DESCRIPTION_PROPERTY property.
|
|
2125 |
*
|
|
2126 |
* @param s the new localized description of the object
|
|
2127 |
*
|
|
2128 |
* @see #setAccessibleName
|
|
2129 |
* @see #addPropertyChangeListener
|
|
2130 |
*
|
|
2131 |
* @beaninfo
|
|
2132 |
* preferred: true
|
|
2133 |
* description: Sets the accessible description for the component.
|
|
2134 |
*/
|
|
2135 |
public void setAccessibleDescription(String s) {
|
|
2136 |
ac.setAccessibleDescription(s);
|
|
2137 |
}
|
|
2138 |
|
|
2139 |
/**
|
|
2140 |
* Gets the role of this object. The role of the object is the generic
|
|
2141 |
* purpose or use of the class of this object. For example, the role
|
|
2142 |
* of a push button is AccessibleRole.PUSH_BUTTON. The roles in
|
|
2143 |
* AccessibleRole are provided so component developers can pick from
|
|
2144 |
* a set of predefined roles. This enables assistive technologies to
|
|
2145 |
* provide a consistent interface to various tweaked subclasses of
|
|
2146 |
* components (e.g., use AccessibleRole.PUSH_BUTTON for all components
|
|
2147 |
* that act like a push button) as well as distinguish between sublasses
|
|
2148 |
* that behave differently (e.g., AccessibleRole.CHECK_BOX for check boxes
|
|
2149 |
* and AccessibleRole.RADIO_BUTTON for radio buttons).
|
|
2150 |
* <p>Note that the AccessibleRole class is also extensible, so
|
|
2151 |
* custom component developers can define their own AccessibleRole's
|
|
2152 |
* if the set of predefined roles is inadequate.
|
|
2153 |
*
|
|
2154 |
* @return an instance of AccessibleRole describing the role of the object
|
|
2155 |
* @see AccessibleRole
|
|
2156 |
*/
|
|
2157 |
public AccessibleRole getAccessibleRole() {
|
|
2158 |
return ac.getAccessibleRole();
|
|
2159 |
}
|
|
2160 |
|
|
2161 |
/**
|
|
2162 |
* Gets the state set of this object. The AccessibleStateSet of an object
|
|
2163 |
* is composed of a set of unique AccessibleStates. A change in the
|
|
2164 |
* AccessibleStateSet of an object will cause a PropertyChangeEvent to
|
|
2165 |
* be fired for the ACCESSIBLE_STATE_PROPERTY property.
|
|
2166 |
*
|
|
2167 |
* @return an instance of AccessibleStateSet containing the
|
|
2168 |
* current state set of the object
|
|
2169 |
* @see AccessibleStateSet
|
|
2170 |
* @see AccessibleState
|
|
2171 |
* @see #addPropertyChangeListener
|
|
2172 |
*/
|
|
2173 |
public AccessibleStateSet getAccessibleStateSet() {
|
|
2174 |
return ac.getAccessibleStateSet();
|
|
2175 |
}
|
|
2176 |
|
|
2177 |
/**
|
|
2178 |
* Gets the Accessible parent of this object.
|
|
2179 |
*
|
|
2180 |
* @return the Accessible parent of this object; null if this
|
|
2181 |
* object does not have an Accessible parent
|
|
2182 |
*/
|
|
2183 |
public Accessible getAccessibleParent() {
|
|
2184 |
return ac.getAccessibleParent();
|
|
2185 |
}
|
|
2186 |
|
|
2187 |
/**
|
|
2188 |
* Sets the Accessible parent of this object. This is meant to be used
|
|
2189 |
* only in the situations where the actual component's parent should
|
|
2190 |
* not be treated as the component's accessible parent and is a method
|
|
2191 |
* that should only be called by the parent of the accessible child.
|
|
2192 |
*
|
|
2193 |
* @param a - Accessible to be set as the parent
|
|
2194 |
*/
|
|
2195 |
public void setAccessibleParent(Accessible a) {
|
|
2196 |
ac.setAccessibleParent(a);
|
|
2197 |
}
|
|
2198 |
|
|
2199 |
/**
|
|
2200 |
* Gets the 0-based index of this object in its accessible parent.
|
|
2201 |
*
|
|
2202 |
* @return the 0-based index of this object in its parent; -1 if this
|
|
2203 |
* object does not have an accessible parent.
|
|
2204 |
*
|
|
2205 |
* @see #getAccessibleParent
|
|
2206 |
* @see #getAccessibleChildrenCount
|
|
2207 |
* @see #getAccessibleChild
|
|
2208 |
*/
|
|
2209 |
public int getAccessibleIndexInParent() {
|
|
2210 |
return JComboBox.this.getSelectedIndex();
|
|
2211 |
}
|
|
2212 |
|
|
2213 |
/**
|
|
2214 |
* Returns the number of accessible children of the object.
|
|
2215 |
*
|
|
2216 |
* @return the number of accessible children of the object.
|
|
2217 |
*/
|
|
2218 |
public int getAccessibleChildrenCount() {
|
|
2219 |
return ac.getAccessibleChildrenCount();
|
|
2220 |
}
|
|
2221 |
|
|
2222 |
/**
|
|
2223 |
* Returns the specified Accessible child of the object. The Accessible
|
|
2224 |
* children of an Accessible object are zero-based, so the first child
|
|
2225 |
* of an Accessible child is at index 0, the second child is at index 1,
|
|
2226 |
* and so on.
|
|
2227 |
*
|
|
2228 |
* @param i zero-based index of child
|
|
2229 |
* @return the Accessible child of the object
|
|
2230 |
* @see #getAccessibleChildrenCount
|
|
2231 |
*/
|
|
2232 |
public Accessible getAccessibleChild(int i) {
|
|
2233 |
return ac.getAccessibleChild(i);
|
|
2234 |
}
|
|
2235 |
|
|
2236 |
/**
|
|
2237 |
* Gets the locale of the component. If the component does not have a
|
|
2238 |
* locale, then the locale of its parent is returned.
|
|
2239 |
*
|
|
2240 |
* @return this component's locale. If this component does not have
|
|
2241 |
* a locale, the locale of its parent is returned.
|
|
2242 |
*
|
|
2243 |
* @exception IllegalComponentStateException
|
|
2244 |
* If the Component does not have its own locale and has not yet been
|
|
2245 |
* added to a containment hierarchy such that the locale can be
|
|
2246 |
* determined from the containing parent.
|
|
2247 |
*/
|
|
2248 |
public Locale getLocale() throws IllegalComponentStateException {
|
|
2249 |
return ac.getLocale();
|
|
2250 |
}
|
|
2251 |
|
|
2252 |
/**
|
|
2253 |
* Adds a PropertyChangeListener to the listener list.
|
|
2254 |
* The listener is registered for all Accessible properties and will
|
|
2255 |
* be called when those properties change.
|
|
2256 |
*
|
|
2257 |
* @see #ACCESSIBLE_NAME_PROPERTY
|
|
2258 |
* @see #ACCESSIBLE_DESCRIPTION_PROPERTY
|
|
2259 |
* @see #ACCESSIBLE_STATE_PROPERTY
|
|
2260 |
* @see #ACCESSIBLE_VALUE_PROPERTY
|
|
2261 |
* @see #ACCESSIBLE_SELECTION_PROPERTY
|
|
2262 |
* @see #ACCESSIBLE_TEXT_PROPERTY
|
|
2263 |
* @see #ACCESSIBLE_VISIBLE_DATA_PROPERTY
|
|
2264 |
*
|
|
2265 |
* @param listener The PropertyChangeListener to be added
|
|
2266 |
*/
|
|
2267 |
public void addPropertyChangeListener(PropertyChangeListener listener) {
|
|
2268 |
ac.addPropertyChangeListener(listener);
|
|
2269 |
}
|
|
2270 |
|
|
2271 |
/**
|
|
2272 |
* Removes a PropertyChangeListener from the listener list.
|
|
2273 |
* This removes a PropertyChangeListener that was registered
|
|
2274 |
* for all properties.
|
|
2275 |
*
|
|
2276 |
* @param listener The PropertyChangeListener to be removed
|
|
2277 |
*/
|
|
2278 |
public void removePropertyChangeListener(PropertyChangeListener listener) {
|
|
2279 |
ac.removePropertyChangeListener(listener);
|
|
2280 |
}
|
|
2281 |
|
|
2282 |
/**
|
|
2283 |
* Gets the AccessibleAction associated with this object that supports
|
|
2284 |
* one or more actions.
|
|
2285 |
*
|
|
2286 |
* @return AccessibleAction if supported by object; else return null
|
|
2287 |
* @see AccessibleAction
|
|
2288 |
*/
|
|
2289 |
public AccessibleAction getAccessibleAction() {
|
|
2290 |
return ac.getAccessibleAction();
|
|
2291 |
}
|
|
2292 |
|
|
2293 |
/**
|
|
2294 |
* Gets the AccessibleComponent associated with this object that has a
|
|
2295 |
* graphical representation.
|
|
2296 |
*
|
|
2297 |
* @return AccessibleComponent if supported by object; else return null
|
|
2298 |
* @see AccessibleComponent
|
|
2299 |
*/
|
|
2300 |
public AccessibleComponent getAccessibleComponent() {
|
|
2301 |
return ac.getAccessibleComponent();
|
|
2302 |
}
|
|
2303 |
|
|
2304 |
/**
|
|
2305 |
* Gets the AccessibleSelection associated with this object which allows its
|
|
2306 |
* Accessible children to be selected.
|
|
2307 |
*
|
|
2308 |
* @return AccessibleSelection if supported by object; else return null
|
|
2309 |
* @see AccessibleSelection
|
|
2310 |
*/
|
|
2311 |
public AccessibleSelection getAccessibleSelection() {
|
|
2312 |
return ac.getAccessibleSelection();
|
|
2313 |
}
|
|
2314 |
|
|
2315 |
/**
|
|
2316 |
* Gets the AccessibleText associated with this object presenting
|
|
2317 |
* text on the display.
|
|
2318 |
*
|
|
2319 |
* @return AccessibleText if supported by object; else return null
|
|
2320 |
* @see AccessibleText
|
|
2321 |
*/
|
|
2322 |
public AccessibleText getAccessibleText() {
|
|
2323 |
return ac.getAccessibleText();
|
|
2324 |
}
|
|
2325 |
|
|
2326 |
/**
|
|
2327 |
* Gets the AccessibleEditableText associated with this object
|
|
2328 |
* presenting editable text on the display.
|
|
2329 |
*
|
|
2330 |
* @return AccessibleEditableText if supported by object; else return null
|
|
2331 |
* @see AccessibleEditableText
|
|
2332 |
*/
|
|
2333 |
public AccessibleEditableText getAccessibleEditableText() {
|
|
2334 |
return ac.getAccessibleEditableText();
|
|
2335 |
}
|
|
2336 |
|
|
2337 |
/**
|
|
2338 |
* Gets the AccessibleValue associated with this object that supports a
|
|
2339 |
* Numerical value.
|
|
2340 |
*
|
|
2341 |
* @return AccessibleValue if supported by object; else return null
|
|
2342 |
* @see AccessibleValue
|
|
2343 |
*/
|
|
2344 |
public AccessibleValue getAccessibleValue() {
|
|
2345 |
return ac.getAccessibleValue();
|
|
2346 |
}
|
|
2347 |
|
|
2348 |
/**
|
|
2349 |
* Gets the AccessibleIcons associated with an object that has
|
|
2350 |
* one or more associated icons
|
|
2351 |
*
|
|
2352 |
* @return an array of AccessibleIcon if supported by object;
|
|
2353 |
* otherwise return null
|
|
2354 |
* @see AccessibleIcon
|
|
2355 |
*/
|
|
2356 |
public AccessibleIcon [] getAccessibleIcon() {
|
|
2357 |
return ac.getAccessibleIcon();
|
|
2358 |
}
|
|
2359 |
|
|
2360 |
/**
|
|
2361 |
* Gets the AccessibleRelationSet associated with an object
|
|
2362 |
*
|
|
2363 |
* @return an AccessibleRelationSet if supported by object;
|
|
2364 |
* otherwise return null
|
|
2365 |
* @see AccessibleRelationSet
|
|
2366 |
*/
|
|
2367 |
public AccessibleRelationSet getAccessibleRelationSet() {
|
|
2368 |
return ac.getAccessibleRelationSet();
|
|
2369 |
}
|
|
2370 |
|
|
2371 |
/**
|
|
2372 |
* Gets the AccessibleTable associated with an object
|
|
2373 |
*
|
|
2374 |
* @return an AccessibleTable if supported by object;
|
|
2375 |
* otherwise return null
|
|
2376 |
* @see AccessibleTable
|
|
2377 |
*/
|
|
2378 |
public AccessibleTable getAccessibleTable() {
|
|
2379 |
return ac.getAccessibleTable();
|
|
2380 |
}
|
|
2381 |
|
|
2382 |
/**
|
|
2383 |
* Support for reporting bound property changes. If oldValue and
|
|
2384 |
* newValue are not equal and the PropertyChangeEvent listener list
|
|
2385 |
* is not empty, then fire a PropertyChange event to each listener.
|
|
2386 |
* In general, this is for use by the Accessible objects themselves
|
|
2387 |
* and should not be called by an application program.
|
|
2388 |
* @param propertyName The programmatic name of the property that
|
|
2389 |
* was changed.
|
|
2390 |
* @param oldValue The old value of the property.
|
|
2391 |
* @param newValue The new value of the property.
|
|
2392 |
* @see java.beans.PropertyChangeSupport
|
|
2393 |
* @see #addPropertyChangeListener
|
|
2394 |
* @see #removePropertyChangeListener
|
|
2395 |
* @see #ACCESSIBLE_NAME_PROPERTY
|
|
2396 |
* @see #ACCESSIBLE_DESCRIPTION_PROPERTY
|
|
2397 |
* @see #ACCESSIBLE_STATE_PROPERTY
|
|
2398 |
* @see #ACCESSIBLE_VALUE_PROPERTY
|
|
2399 |
* @see #ACCESSIBLE_SELECTION_PROPERTY
|
|
2400 |
* @see #ACCESSIBLE_TEXT_PROPERTY
|
|
2401 |
* @see #ACCESSIBLE_VISIBLE_DATA_PROPERTY
|
|
2402 |
*/
|
|
2403 |
public void firePropertyChange(String propertyName,
|
|
2404 |
Object oldValue,
|
|
2405 |
Object newValue) {
|
|
2406 |
ac.firePropertyChange(propertyName, oldValue, newValue);
|
|
2407 |
}
|
|
2408 |
}
|
|
2409 |
|
|
2410 |
} // innerclass AccessibleJComboBox
|
|
2411 |
}
|