--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.desktop/share/classes/javax/swing/JList.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,3736 @@
+/*
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package javax.swing;
+
+import java.awt.*;
+import java.awt.event.*;
+
+import java.util.Vector;
+import java.util.Locale;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import java.beans.PropertyChangeEvent;
+import java.beans.PropertyChangeListener;
+import java.beans.Transient;
+
+import javax.swing.event.*;
+import javax.accessibility.*;
+import javax.swing.plaf.*;
+import javax.swing.text.Position;
+
+import java.io.ObjectOutputStream;
+import java.io.ObjectInputStream;
+import java.io.IOException;
+import java.io.Serializable;
+
+import sun.swing.SwingUtilities2;
+import sun.swing.SwingUtilities2.Section;
+import static sun.swing.SwingUtilities2.Section.*;
+
+
+/**
+ * A component that displays a list of objects and allows the user to select
+ * one or more items. A separate model, {@code ListModel}, maintains the
+ * contents of the list.
+ * <p>
+ * It's easy to display an array or Vector of objects, using the {@code JList}
+ * constructor that automatically builds a read-only {@code ListModel} instance
+ * for you:
+ * <pre>
+ * {@code
+ * // Create a JList that displays strings from an array
+ *
+ * String[] data = {"one", "two", "three", "four"};
+ * JList<String> myList = new JList<String>(data);
+ *
+ * // Create a JList that displays the superclasses of JList.class, by
+ * // creating it with a Vector populated with this data
+ *
+ * Vector<Class<?>> superClasses = new Vector<Class<?>>();
+ * Class<JList> rootClass = javax.swing.JList.class;
+ * for(Class<?> cls = rootClass; cls != null; cls = cls.getSuperclass()) {
+ * superClasses.addElement(cls);
+ * }
+ * JList<Class<?>> myList = new JList<Class<?>>(superClasses);
+ *
+ * // The automatically created model is stored in JList's "model"
+ * // property, which you can retrieve
+ *
+ * ListModel<Class<?>> model = myList.getModel();
+ * for(int i = 0; i < model.getSize(); i++) {
+ * System.out.println(model.getElementAt(i));
+ * }
+ * }
+ * </pre>
+ * <p>
+ * A {@code ListModel} can be supplied directly to a {@code JList} by way of a
+ * constructor or the {@code setModel} method. The contents need not be static -
+ * the number of items, and the values of items can change over time. A correct
+ * {@code ListModel} implementation notifies the set of
+ * {@code javax.swing.event.ListDataListener}s that have been added to it, each
+ * time a change occurs. These changes are characterized by a
+ * {@code javax.swing.event.ListDataEvent}, which identifies the range of list
+ * indices that have been modified, added, or removed. {@code JList}'s
+ * {@code ListUI} is responsible for keeping the visual representation up to
+ * date with changes, by listening to the model.
+ * <p>
+ * Simple, dynamic-content, {@code JList} applications can use the
+ * {@code DefaultListModel} class to maintain list elements. This class
+ * implements the {@code ListModel} interface and also provides a
+ * <code>java.util.Vector</code>-like API. Applications that need a more
+ * custom <code>ListModel</code> implementation may instead wish to subclass
+ * {@code AbstractListModel}, which provides basic support for managing and
+ * notifying listeners. For example, a read-only implementation of
+ * {@code AbstractListModel}:
+ * <pre>
+ * {@code
+ * // This list model has about 2^16 elements. Enjoy scrolling.
+ *
+ * ListModel<String> bigData = new AbstractListModel<String>() {
+ * public int getSize() { return Short.MAX_VALUE; }
+ * public String getElementAt(int index) { return "Index " + index; }
+ * };
+ * }
+ * </pre>
+ * <p>
+ * The selection state of a {@code JList} is managed by another separate
+ * model, an instance of {@code ListSelectionModel}. {@code JList} is
+ * initialized with a selection model on construction, and also contains
+ * methods to query or set this selection model. Additionally, {@code JList}
+ * provides convenient methods for easily managing the selection. These methods,
+ * such as {@code setSelectedIndex} and {@code getSelectedValue}, are cover
+ * methods that take care of the details of interacting with the selection
+ * model. By default, {@code JList}'s selection model is configured to allow any
+ * combination of items to be selected at a time; selection mode
+ * {@code MULTIPLE_INTERVAL_SELECTION}. The selection mode can be changed
+ * on the selection model directly, or via {@code JList}'s cover method.
+ * Responsibility for updating the selection model in response to user gestures
+ * lies with the list's {@code ListUI}.
+ * <p>
+ * A correct {@code ListSelectionModel} implementation notifies the set of
+ * {@code javax.swing.event.ListSelectionListener}s that have been added to it
+ * each time a change to the selection occurs. These changes are characterized
+ * by a {@code javax.swing.event.ListSelectionEvent}, which identifies the range
+ * of the selection change.
+ * <p>
+ * The preferred way to listen for changes in list selection is to add
+ * {@code ListSelectionListener}s directly to the {@code JList}. {@code JList}
+ * then takes care of listening to the the selection model and notifying your
+ * listeners of change.
+ * <p>
+ * Responsibility for listening to selection changes in order to keep the list's
+ * visual representation up to date lies with the list's {@code ListUI}.
+ * <p>
+ * <a name="renderer"></a>
+ * Painting of cells in a {@code JList} is handled by a delegate called a
+ * cell renderer, installed on the list as the {@code cellRenderer} property.
+ * The renderer provides a {@code java.awt.Component} that is used
+ * like a "rubber stamp" to paint the cells. Each time a cell needs to be
+ * painted, the list's {@code ListUI} asks the cell renderer for the component,
+ * moves it into place, and has it paint the contents of the cell by way of its
+ * {@code paint} method. A default cell renderer, which uses a {@code JLabel}
+ * component to render, is installed by the lists's {@code ListUI}. You can
+ * substitute your own renderer using code like this:
+ * <pre>
+ * {@code
+ * // Display an icon and a string for each object in the list.
+ *
+ * class MyCellRenderer extends JLabel implements ListCellRenderer<Object> {
+ * final static ImageIcon longIcon = new ImageIcon("long.gif");
+ * final static ImageIcon shortIcon = new ImageIcon("short.gif");
+ *
+ * // This is the only method defined by ListCellRenderer.
+ * // We just reconfigure the JLabel each time we're called.
+ *
+ * public Component getListCellRendererComponent(
+ * JList<?> list, // the list
+ * Object value, // value to display
+ * int index, // cell index
+ * boolean isSelected, // is the cell selected
+ * boolean cellHasFocus) // does the cell have focus
+ * {
+ * String s = value.toString();
+ * setText(s);
+ * setIcon((s.length() > 10) ? longIcon : shortIcon);
+ * if (isSelected) {
+ * setBackground(list.getSelectionBackground());
+ * setForeground(list.getSelectionForeground());
+ * } else {
+ * setBackground(list.getBackground());
+ * setForeground(list.getForeground());
+ * }
+ * setEnabled(list.isEnabled());
+ * setFont(list.getFont());
+ * setOpaque(true);
+ * return this;
+ * }
+ * }
+ *
+ * myList.setCellRenderer(new MyCellRenderer());
+ * }
+ * </pre>
+ * <p>
+ * Another job for the cell renderer is in helping to determine sizing
+ * information for the list. By default, the list's {@code ListUI} determines
+ * the size of cells by asking the cell renderer for its preferred
+ * size for each list item. This can be expensive for large lists of items.
+ * To avoid these calculations, you can set a {@code fixedCellWidth} and
+ * {@code fixedCellHeight} on the list, or have these values calculated
+ * automatically based on a single prototype value:
+ * <a name="prototype_example"></a>
+ * <pre>
+ * {@code
+ * JList<String> bigDataList = new JList<String>(bigData);
+ *
+ * // We don't want the JList implementation to compute the width
+ * // or height of all of the list cells, so we give it a string
+ * // that's as big as we'll need for any cell. It uses this to
+ * // compute values for the fixedCellWidth and fixedCellHeight
+ * // properties.
+ *
+ * bigDataList.setPrototypeCellValue("Index 1234567890");
+ * }
+ * </pre>
+ * <p>
+ * {@code JList} doesn't implement scrolling directly. To create a list that
+ * scrolls, make it the viewport view of a {@code JScrollPane}. For example:
+ * <pre>
+ * JScrollPane scrollPane = new JScrollPane(myList);
+ *
+ * // Or in two steps:
+ * JScrollPane scrollPane = new JScrollPane();
+ * scrollPane.getViewport().setView(myList);
+ * </pre>
+ * <p>
+ * {@code JList} doesn't provide any special handling of double or triple
+ * (or N) mouse clicks, but it's easy to add a {@code MouseListener} if you
+ * wish to take action on these events. Use the {@code locationToIndex}
+ * method to determine what cell was clicked. For example:
+ * <pre>
+ * MouseListener mouseListener = new MouseAdapter() {
+ * public void mouseClicked(MouseEvent e) {
+ * if (e.getClickCount() == 2) {
+ * int index = list.locationToIndex(e.getPoint());
+ * System.out.println("Double clicked on Item " + index);
+ * }
+ * }
+ * };
+ * list.addMouseListener(mouseListener);
+ * </pre>
+ * <p>
+ * <strong>Warning:</strong> Swing is not thread safe. For more
+ * information see <a
+ * href="package-summary.html#threading">Swing's Threading
+ * Policy</a>.
+ * <p>
+ * <strong>Warning:</strong>
+ * Serialized objects of this class will not be compatible with
+ * future Swing releases. The current serialization support is
+ * appropriate for short term storage or RMI between applications running
+ * the same version of Swing. As of 1.4, support for long term storage
+ * of all JavaBeans™
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ * <p>
+ * See <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/list.html">How to Use Lists</a>
+ * in <a href="http://docs.oracle.com/javase/tutorial/"><em>The Java Tutorial</em></a>
+ * for further documentation.
+ *
+ * @see ListModel
+ * @see AbstractListModel
+ * @see DefaultListModel
+ * @see ListSelectionModel
+ * @see DefaultListSelectionModel
+ * @see ListCellRenderer
+ * @see DefaultListCellRenderer
+ *
+ * @param <E> the type of the elements of this list
+ *
+ * @beaninfo
+ * attribute: isContainer false
+ * description: A component which allows for the selection of one or more objects from a list.
+ *
+ * @author Hans Muller
+ * @since 1.2
+ */
+@SuppressWarnings("serial") // Same-version serialization only
+public class JList<E> extends JComponent implements Scrollable, Accessible
+{
+ /**
+ * @see #getUIClassID
+ * @see #readObject
+ */
+ private static final String uiClassID = "ListUI";
+
+ /**
+ * Indicates a vertical layout of cells, in a single column;
+ * the default layout.
+ * @see #setLayoutOrientation
+ * @since 1.4
+ */
+ public static final int VERTICAL = 0;
+
+ /**
+ * Indicates a "newspaper style" layout with cells flowing vertically
+ * then horizontally.
+ * @see #setLayoutOrientation
+ * @since 1.4
+ */
+ public static final int VERTICAL_WRAP = 1;
+
+ /**
+ * Indicates a "newspaper style" layout with cells flowing horizontally
+ * then vertically.
+ * @see #setLayoutOrientation
+ * @since 1.4
+ */
+ public static final int HORIZONTAL_WRAP = 2;
+
+ private int fixedCellWidth = -1;
+ private int fixedCellHeight = -1;
+ private int horizontalScrollIncrement = -1;
+ private E prototypeCellValue;
+ private int visibleRowCount = 8;
+ private Color selectionForeground;
+ private Color selectionBackground;
+ private boolean dragEnabled;
+
+ private ListSelectionModel selectionModel;
+ private ListModel<E> dataModel;
+ private ListCellRenderer<? super E> cellRenderer;
+ private ListSelectionListener selectionListener;
+
+ /**
+ * How to lay out the cells; defaults to <code>VERTICAL</code>.
+ */
+ private int layoutOrientation;
+
+ /**
+ * The drop mode for this component.
+ */
+ private DropMode dropMode = DropMode.USE_SELECTION;
+
+ /**
+ * The drop location.
+ */
+ private transient DropLocation dropLocation;
+
+ /**
+ * A subclass of <code>TransferHandler.DropLocation</code> representing
+ * a drop location for a <code>JList</code>.
+ *
+ * @see #getDropLocation
+ * @since 1.6
+ */
+ public static final class DropLocation extends TransferHandler.DropLocation {
+ private final int index;
+ private final boolean isInsert;
+
+ private DropLocation(Point p, int index, boolean isInsert) {
+ super(p);
+ this.index = index;
+ this.isInsert = isInsert;
+ }
+
+ /**
+ * Returns the index where dropped data should be placed in the
+ * list. Interpretation of the value depends on the drop mode set on
+ * the associated component. If the drop mode is either
+ * <code>DropMode.USE_SELECTION</code> or <code>DropMode.ON</code>,
+ * the return value is an index of a row in the list. If the drop mode is
+ * <code>DropMode.INSERT</code>, the return value refers to the index
+ * where the data should be inserted. If the drop mode is
+ * <code>DropMode.ON_OR_INSERT</code>, the value of
+ * <code>isInsert()</code> indicates whether the index is an index
+ * of a row, or an insert index.
+ * <p>
+ * <code>-1</code> indicates that the drop occurred over empty space,
+ * and no index could be calculated.
+ *
+ * @return the drop index
+ */
+ public int getIndex() {
+ return index;
+ }
+
+ /**
+ * Returns whether or not this location represents an insert
+ * location.
+ *
+ * @return whether or not this is an insert location
+ */
+ public boolean isInsert() {
+ return isInsert;
+ }
+
+ /**
+ * Returns a string representation of this drop location.
+ * This method is intended to be used for debugging purposes,
+ * and the content and format of the returned string may vary
+ * between implementations.
+ *
+ * @return a string representation of this drop location
+ */
+ public String toString() {
+ return getClass().getName()
+ + "[dropPoint=" + getDropPoint() + ","
+ + "index=" + index + ","
+ + "insert=" + isInsert + "]";
+ }
+ }
+
+ /**
+ * Constructs a {@code JList} that displays elements from the specified,
+ * {@code non-null}, model. All {@code JList} constructors delegate to
+ * this one.
+ * <p>
+ * This constructor registers the list with the {@code ToolTipManager},
+ * allowing for tooltips to be provided by the cell renderers.
+ *
+ * @param dataModel the model for the list
+ * @exception IllegalArgumentException if the model is {@code null}
+ */
+ public JList(ListModel<E> dataModel)
+ {
+ if (dataModel == null) {
+ throw new IllegalArgumentException("dataModel must be non null");
+ }
+
+ // Register with the ToolTipManager so that tooltips from the
+ // renderer show through.
+ ToolTipManager toolTipManager = ToolTipManager.sharedInstance();
+ toolTipManager.registerComponent(this);
+
+ layoutOrientation = VERTICAL;
+
+ this.dataModel = dataModel;
+ selectionModel = createSelectionModel();
+ setAutoscrolls(true);
+ setOpaque(true);
+ updateUI();
+ }
+
+
+ /**
+ * Constructs a <code>JList</code> that displays the elements in
+ * the specified array. This constructor creates a read-only model
+ * for the given array, and then delegates to the constructor that
+ * takes a {@code ListModel}.
+ * <p>
+ * Attempts to pass a {@code null} value to this method results in
+ * undefined behavior and, most likely, exceptions. The created model
+ * references the given array directly. Attempts to modify the array
+ * after constructing the list results in undefined behavior.
+ *
+ * @param listData the array of Objects to be loaded into the data model,
+ * {@code non-null}
+ */
+ public JList(final E[] listData)
+ {
+ this (
+ new AbstractListModel<E>() {
+ public int getSize() { return listData.length; }
+ public E getElementAt(int i) { return listData[i]; }
+ }
+ );
+ }
+
+
+ /**
+ * Constructs a <code>JList</code> that displays the elements in
+ * the specified <code>Vector</code>. This constructor creates a read-only
+ * model for the given {@code Vector}, and then delegates to the constructor
+ * that takes a {@code ListModel}.
+ * <p>
+ * Attempts to pass a {@code null} value to this method results in
+ * undefined behavior and, most likely, exceptions. The created model
+ * references the given {@code Vector} directly. Attempts to modify the
+ * {@code Vector} after constructing the list results in undefined behavior.
+ *
+ * @param listData the <code>Vector</code> to be loaded into the
+ * data model, {@code non-null}
+ */
+ public JList(final Vector<? extends E> listData) {
+ this (
+ new AbstractListModel<E>() {
+ public int getSize() { return listData.size(); }
+ public E getElementAt(int i) { return listData.elementAt(i); }
+ }
+ );
+ }
+
+
+ /**
+ * Constructs a <code>JList</code> with an empty, read-only, model.
+ */
+ public JList() {
+ this (
+ new AbstractListModel<E>() {
+ public int getSize() { return 0; }
+ public E getElementAt(int i) { throw new IndexOutOfBoundsException("No Data Model"); }
+ }
+ );
+ }
+
+
+ /**
+ * Returns the {@code ListUI}, the look and feel object that
+ * renders this component.
+ *
+ * @return the <code>ListUI</code> object that renders this component
+ */
+ public ListUI getUI() {
+ return (ListUI)ui;
+ }
+
+
+ /**
+ * Sets the {@code ListUI}, the look and feel object that
+ * renders this component.
+ *
+ * @param ui the <code>ListUI</code> object
+ * @see UIDefaults#getUI
+ * @beaninfo
+ * bound: true
+ * hidden: true
+ * attribute: visualUpdate true
+ * description: The UI object that implements the Component's LookAndFeel.
+ */
+ public void setUI(ListUI ui) {
+ super.setUI(ui);
+ }
+
+
+ /**
+ * Resets the {@code ListUI} property by setting it to the value provided
+ * by the current look and feel. If the current cell renderer was installed
+ * by the developer (rather than the look and feel itself), this also causes
+ * the cell renderer and its children to be updated, by calling
+ * {@code SwingUtilities.updateComponentTreeUI} on it.
+ *
+ * @see UIManager#getUI
+ * @see SwingUtilities#updateComponentTreeUI
+ */
+ public void updateUI() {
+ setUI((ListUI)UIManager.getUI(this));
+
+ ListCellRenderer<? super E> renderer = getCellRenderer();
+ if (renderer instanceof Component) {
+ SwingUtilities.updateComponentTreeUI((Component)renderer);
+ }
+ }
+
+
+ /**
+ * Returns {@code "ListUI"}, the <code>UIDefaults</code> key used to look
+ * up the name of the {@code javax.swing.plaf.ListUI} class that defines
+ * the look and feel for this component.
+ *
+ * @return the string "ListUI"
+ * @see JComponent#getUIClassID
+ * @see UIDefaults#getUI
+ */
+ public String getUIClassID() {
+ return uiClassID;
+ }
+
+
+ /* -----private-----
+ * This method is called by setPrototypeCellValue and setCellRenderer
+ * to update the fixedCellWidth and fixedCellHeight properties from the
+ * current value of prototypeCellValue (if it's non null).
+ * <p>
+ * This method sets fixedCellWidth and fixedCellHeight but does <b>not</b>
+ * generate PropertyChangeEvents for them.
+ *
+ * @see #setPrototypeCellValue
+ * @see #setCellRenderer
+ */
+ private void updateFixedCellSize()
+ {
+ ListCellRenderer<? super E> cr = getCellRenderer();
+ E value = getPrototypeCellValue();
+
+ if ((cr != null) && (value != null)) {
+ Component c = cr.getListCellRendererComponent(this, value, 0, false, false);
+
+ /* The ListUI implementation will add Component c to its private
+ * CellRendererPane however we can't assume that's already
+ * been done here. So we temporarily set the one "inherited"
+ * property that may affect the renderer components preferred size:
+ * its font.
+ */
+ Font f = c.getFont();
+ c.setFont(getFont());
+
+ Dimension d = c.getPreferredSize();
+ fixedCellWidth = d.width;
+ fixedCellHeight = d.height;
+
+ c.setFont(f);
+ }
+ }
+
+
+ /**
+ * Returns the "prototypical" cell value -- a value used to calculate a
+ * fixed width and height for cells. This can be {@code null} if there
+ * is no such value.
+ *
+ * @return the value of the {@code prototypeCellValue} property
+ * @see #setPrototypeCellValue
+ */
+ public E getPrototypeCellValue() {
+ return prototypeCellValue;
+ }
+
+ /**
+ * Sets the {@code prototypeCellValue} property, and then (if the new value
+ * is {@code non-null}), computes the {@code fixedCellWidth} and
+ * {@code fixedCellHeight} properties by requesting the cell renderer
+ * component for the given value (and index 0) from the cell renderer, and
+ * using that component's preferred size.
+ * <p>
+ * This method is useful when the list is too long to allow the
+ * {@code ListUI} to compute the width/height of each cell, and there is a
+ * single cell value that is known to occupy as much space as any of the
+ * others, a so-called prototype.
+ * <p>
+ * While all three of the {@code prototypeCellValue},
+ * {@code fixedCellHeight}, and {@code fixedCellWidth} properties may be
+ * modified by this method, {@code PropertyChangeEvent} notifications are
+ * only sent when the {@code prototypeCellValue} property changes.
+ * <p>
+ * To see an example which sets this property, see the
+ * <a href="#prototype_example">class description</a> above.
+ * <p>
+ * The default value of this property is <code>null</code>.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param prototypeCellValue the value on which to base
+ * <code>fixedCellWidth</code> and
+ * <code>fixedCellHeight</code>
+ * @see #getPrototypeCellValue
+ * @see #setFixedCellWidth
+ * @see #setFixedCellHeight
+ * @see JComponent#addPropertyChangeListener
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: The cell prototype value, used to compute cell width and height.
+ */
+ public void setPrototypeCellValue(E prototypeCellValue) {
+ E oldValue = this.prototypeCellValue;
+ this.prototypeCellValue = prototypeCellValue;
+
+ /* If the prototypeCellValue has changed and is non-null,
+ * then recompute fixedCellWidth and fixedCellHeight.
+ */
+
+ if ((prototypeCellValue != null) && !prototypeCellValue.equals(oldValue)) {
+ updateFixedCellSize();
+ }
+
+ firePropertyChange("prototypeCellValue", oldValue, prototypeCellValue);
+ }
+
+
+ /**
+ * Returns the value of the {@code fixedCellWidth} property.
+ *
+ * @return the fixed cell width
+ * @see #setFixedCellWidth
+ */
+ public int getFixedCellWidth() {
+ return fixedCellWidth;
+ }
+
+ /**
+ * Sets a fixed value to be used for the width of every cell in the list.
+ * If {@code width} is -1, cell widths are computed in the {@code ListUI}
+ * by applying <code>getPreferredSize</code> to the cell renderer component
+ * for each list element.
+ * <p>
+ * The default value of this property is {@code -1}.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param width the width to be used for all cells in the list
+ * @see #setPrototypeCellValue
+ * @see #setFixedCellWidth
+ * @see JComponent#addPropertyChangeListener
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: Defines a fixed cell width when greater than zero.
+ */
+ public void setFixedCellWidth(int width) {
+ int oldValue = fixedCellWidth;
+ fixedCellWidth = width;
+ firePropertyChange("fixedCellWidth", oldValue, fixedCellWidth);
+ }
+
+
+ /**
+ * Returns the value of the {@code fixedCellHeight} property.
+ *
+ * @return the fixed cell height
+ * @see #setFixedCellHeight
+ */
+ public int getFixedCellHeight() {
+ return fixedCellHeight;
+ }
+
+ /**
+ * Sets a fixed value to be used for the height of every cell in the list.
+ * If {@code height} is -1, cell heights are computed in the {@code ListUI}
+ * by applying <code>getPreferredSize</code> to the cell renderer component
+ * for each list element.
+ * <p>
+ * The default value of this property is {@code -1}.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param height the height to be used for for all cells in the list
+ * @see #setPrototypeCellValue
+ * @see #setFixedCellWidth
+ * @see JComponent#addPropertyChangeListener
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: Defines a fixed cell height when greater than zero.
+ */
+ public void setFixedCellHeight(int height) {
+ int oldValue = fixedCellHeight;
+ fixedCellHeight = height;
+ firePropertyChange("fixedCellHeight", oldValue, fixedCellHeight);
+ }
+
+
+ /**
+ * Returns the object responsible for painting list items.
+ *
+ * @return the value of the {@code cellRenderer} property
+ * @see #setCellRenderer
+ */
+ @Transient
+ public ListCellRenderer<? super E> getCellRenderer() {
+ return cellRenderer;
+ }
+
+ /**
+ * Sets the delegate that is used to paint each cell in the list.
+ * The job of a cell renderer is discussed in detail in the
+ * <a href="#renderer">class level documentation</a>.
+ * <p>
+ * If the {@code prototypeCellValue} property is {@code non-null},
+ * setting the cell renderer also causes the {@code fixedCellWidth} and
+ * {@code fixedCellHeight} properties to be re-calculated. Only one
+ * <code>PropertyChangeEvent</code> is generated however -
+ * for the <code>cellRenderer</code> property.
+ * <p>
+ * The default value of this property is provided by the {@code ListUI}
+ * delegate, i.e. by the look and feel implementation.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param cellRenderer the <code>ListCellRenderer</code>
+ * that paints list cells
+ * @see #getCellRenderer
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: The component used to draw the cells.
+ */
+ public void setCellRenderer(ListCellRenderer<? super E> cellRenderer) {
+ ListCellRenderer<? super E> oldValue = this.cellRenderer;
+ this.cellRenderer = cellRenderer;
+
+ /* If the cellRenderer has changed and prototypeCellValue
+ * was set, then recompute fixedCellWidth and fixedCellHeight.
+ */
+ if ((cellRenderer != null) && !cellRenderer.equals(oldValue)) {
+ updateFixedCellSize();
+ }
+
+ firePropertyChange("cellRenderer", oldValue, cellRenderer);
+ }
+
+
+ /**
+ * Returns the color used to draw the foreground of selected items.
+ * {@code DefaultListCellRenderer} uses this color to draw the foreground
+ * of items in the selected state, as do the renderers installed by most
+ * {@code ListUI} implementations.
+ *
+ * @return the color to draw the foreground of selected items
+ * @see #setSelectionForeground
+ * @see DefaultListCellRenderer
+ */
+ public Color getSelectionForeground() {
+ return selectionForeground;
+ }
+
+
+ /**
+ * Sets the color used to draw the foreground of selected items, which
+ * cell renderers can use to render text and graphics.
+ * {@code DefaultListCellRenderer} uses this color to draw the foreground
+ * of items in the selected state, as do the renderers installed by most
+ * {@code ListUI} implementations.
+ * <p>
+ * The default value of this property is defined by the look and feel
+ * implementation.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param selectionForeground the {@code Color} to use in the foreground
+ * for selected list items
+ * @see #getSelectionForeground
+ * @see #setSelectionBackground
+ * @see #setForeground
+ * @see #setBackground
+ * @see #setFont
+ * @see DefaultListCellRenderer
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: The foreground color of selected cells.
+ */
+ public void setSelectionForeground(Color selectionForeground) {
+ Color oldValue = this.selectionForeground;
+ this.selectionForeground = selectionForeground;
+ firePropertyChange("selectionForeground", oldValue, selectionForeground);
+ }
+
+
+ /**
+ * Returns the color used to draw the background of selected items.
+ * {@code DefaultListCellRenderer} uses this color to draw the background
+ * of items in the selected state, as do the renderers installed by most
+ * {@code ListUI} implementations.
+ *
+ * @return the color to draw the background of selected items
+ * @see #setSelectionBackground
+ * @see DefaultListCellRenderer
+ */
+ public Color getSelectionBackground() {
+ return selectionBackground;
+ }
+
+
+ /**
+ * Sets the color used to draw the background of selected items, which
+ * cell renderers can use fill selected cells.
+ * {@code DefaultListCellRenderer} uses this color to fill the background
+ * of items in the selected state, as do the renderers installed by most
+ * {@code ListUI} implementations.
+ * <p>
+ * The default value of this property is defined by the look
+ * and feel implementation.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param selectionBackground the {@code Color} to use for the
+ * background of selected cells
+ * @see #getSelectionBackground
+ * @see #setSelectionForeground
+ * @see #setForeground
+ * @see #setBackground
+ * @see #setFont
+ * @see DefaultListCellRenderer
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: The background color of selected cells.
+ */
+ public void setSelectionBackground(Color selectionBackground) {
+ Color oldValue = this.selectionBackground;
+ this.selectionBackground = selectionBackground;
+ firePropertyChange("selectionBackground", oldValue, selectionBackground);
+ }
+
+
+ /**
+ * Returns the value of the {@code visibleRowCount} property. See the
+ * documentation for {@link #setVisibleRowCount} for details on how to
+ * interpret this value.
+ *
+ * @return the value of the {@code visibleRowCount} property.
+ * @see #setVisibleRowCount
+ */
+ public int getVisibleRowCount() {
+ return visibleRowCount;
+ }
+
+ /**
+ * Sets the {@code visibleRowCount} property, which has different meanings
+ * depending on the layout orientation: For a {@code VERTICAL} layout
+ * orientation, this sets the preferred number of rows to display without
+ * requiring scrolling; for other orientations, it affects the wrapping of
+ * cells.
+ * <p>
+ * In {@code VERTICAL} orientation:<br>
+ * Setting this property affects the return value of the
+ * {@link #getPreferredScrollableViewportSize} method, which is used to
+ * calculate the preferred size of an enclosing viewport. See that method's
+ * documentation for more details.
+ * <p>
+ * In {@code HORIZONTAL_WRAP} and {@code VERTICAL_WRAP} orientations:<br>
+ * This affects how cells are wrapped. See the documentation of
+ * {@link #setLayoutOrientation} for more details.
+ * <p>
+ * The default value of this property is {@code 8}.
+ * <p>
+ * Calling this method with a negative value results in the property
+ * being set to {@code 0}.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param visibleRowCount an integer specifying the preferred number of
+ * rows to display without requiring scrolling
+ * @see #getVisibleRowCount
+ * @see #getPreferredScrollableViewportSize
+ * @see #setLayoutOrientation
+ * @see JComponent#getVisibleRect
+ * @see JViewport
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: The preferred number of rows to display without
+ * requiring scrolling
+ */
+ public void setVisibleRowCount(int visibleRowCount) {
+ int oldValue = this.visibleRowCount;
+ this.visibleRowCount = Math.max(0, visibleRowCount);
+ firePropertyChange("visibleRowCount", oldValue, visibleRowCount);
+ }
+
+
+ /**
+ * Returns the layout orientation property for the list: {@code VERTICAL}
+ * if the layout is a single column of cells, {@code VERTICAL_WRAP} if the
+ * layout is "newspaper style" with the content flowing vertically then
+ * horizontally, or {@code HORIZONTAL_WRAP} if the layout is "newspaper
+ * style" with the content flowing horizontally then vertically.
+ *
+ * @return the value of the {@code layoutOrientation} property
+ * @see #setLayoutOrientation
+ * @since 1.4
+ */
+ public int getLayoutOrientation() {
+ return layoutOrientation;
+ }
+
+
+ /**
+ * Defines the way list cells are layed out. Consider a {@code JList}
+ * with five cells. Cells can be layed out in one of the following ways:
+ *
+ * <pre>
+ * VERTICAL: 0
+ * 1
+ * 2
+ * 3
+ * 4
+ *
+ * HORIZONTAL_WRAP: 0 1 2
+ * 3 4
+ *
+ * VERTICAL_WRAP: 0 3
+ * 1 4
+ * 2
+ * </pre>
+ * <p>
+ * A description of these layouts follows:
+ *
+ * <table border="1"
+ * summary="Describes layouts VERTICAL, HORIZONTAL_WRAP, and VERTICAL_WRAP">
+ * <tr><th><p style="text-align:left">Value</p></th><th><p style="text-align:left">Description</p></th></tr>
+ * <tr><td><code>VERTICAL</code>
+ * <td>Cells are layed out vertically in a single column.
+ * <tr><td><code>HORIZONTAL_WRAP</code>
+ * <td>Cells are layed out horizontally, wrapping to a new row as
+ * necessary. If the {@code visibleRowCount} property is less than
+ * or equal to zero, wrapping is determined by the width of the
+ * list; otherwise wrapping is done in such a way as to ensure
+ * {@code visibleRowCount} rows in the list.
+ * <tr><td><code>VERTICAL_WRAP</code>
+ * <td>Cells are layed out vertically, wrapping to a new column as
+ * necessary. If the {@code visibleRowCount} property is less than
+ * or equal to zero, wrapping is determined by the height of the
+ * list; otherwise wrapping is done at {@code visibleRowCount} rows.
+ * </table>
+ * <p>
+ * The default value of this property is <code>VERTICAL</code>.
+ *
+ * @param layoutOrientation the new layout orientation, one of:
+ * {@code VERTICAL}, {@code HORIZONTAL_WRAP} or {@code VERTICAL_WRAP}
+ * @see #getLayoutOrientation
+ * @see #setVisibleRowCount
+ * @see #getScrollableTracksViewportHeight
+ * @see #getScrollableTracksViewportWidth
+ * @throws IllegalArgumentException if {@code layoutOrientation} isn't one of the
+ * allowable values
+ * @since 1.4
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: Defines the way list cells are layed out.
+ * enum: VERTICAL JList.VERTICAL
+ * HORIZONTAL_WRAP JList.HORIZONTAL_WRAP
+ * VERTICAL_WRAP JList.VERTICAL_WRAP
+ */
+ public void setLayoutOrientation(int layoutOrientation) {
+ int oldValue = this.layoutOrientation;
+ switch (layoutOrientation) {
+ case VERTICAL:
+ case VERTICAL_WRAP:
+ case HORIZONTAL_WRAP:
+ this.layoutOrientation = layoutOrientation;
+ firePropertyChange("layoutOrientation", oldValue, layoutOrientation);
+ break;
+ default:
+ throw new IllegalArgumentException("layoutOrientation must be one of: VERTICAL, HORIZONTAL_WRAP or VERTICAL_WRAP");
+ }
+ }
+
+
+ /**
+ * Returns the smallest list index that is currently visible.
+ * In a left-to-right {@code componentOrientation}, the first visible
+ * cell is found closest to the list's upper-left corner. In right-to-left
+ * orientation, it is found closest to the upper-right corner.
+ * If nothing is visible or the list is empty, {@code -1} is returned.
+ * Note that the returned cell may only be partially visible.
+ *
+ * @return the index of the first visible cell
+ * @see #getLastVisibleIndex
+ * @see JComponent#getVisibleRect
+ */
+ public int getFirstVisibleIndex() {
+ Rectangle r = getVisibleRect();
+ int first;
+ if (this.getComponentOrientation().isLeftToRight()) {
+ first = locationToIndex(r.getLocation());
+ } else {
+ first = locationToIndex(new Point((r.x + r.width) - 1, r.y));
+ }
+ if (first != -1) {
+ Rectangle bounds = getCellBounds(first, first);
+ if (bounds != null) {
+ SwingUtilities.computeIntersection(r.x, r.y, r.width, r.height, bounds);
+ if (bounds.width == 0 || bounds.height == 0) {
+ first = -1;
+ }
+ }
+ }
+ return first;
+ }
+
+
+ /**
+ * Returns the largest list index that is currently visible.
+ * If nothing is visible or the list is empty, {@code -1} is returned.
+ * Note that the returned cell may only be partially visible.
+ *
+ * @return the index of the last visible cell
+ * @see #getFirstVisibleIndex
+ * @see JComponent#getVisibleRect
+ */
+ public int getLastVisibleIndex() {
+ boolean leftToRight = this.getComponentOrientation().isLeftToRight();
+ Rectangle r = getVisibleRect();
+ Point lastPoint;
+ if (leftToRight) {
+ lastPoint = new Point((r.x + r.width) - 1, (r.y + r.height) - 1);
+ } else {
+ lastPoint = new Point(r.x, (r.y + r.height) - 1);
+ }
+ int location = locationToIndex(lastPoint);
+
+ if (location != -1) {
+ Rectangle bounds = getCellBounds(location, location);
+
+ if (bounds != null) {
+ SwingUtilities.computeIntersection(r.x, r.y, r.width, r.height, bounds);
+ if (bounds.width == 0 || bounds.height == 0) {
+ // Try the top left(LTR) or top right(RTL) corner, and
+ // then go across checking each cell for HORIZONTAL_WRAP.
+ // Try the lower left corner, and then go across checking
+ // each cell for other list layout orientation.
+ boolean isHorizontalWrap =
+ (getLayoutOrientation() == HORIZONTAL_WRAP);
+ Point visibleLocation = isHorizontalWrap ?
+ new Point(lastPoint.x, r.y) :
+ new Point(r.x, lastPoint.y);
+ int last;
+ int visIndex = -1;
+ int lIndex = location;
+ location = -1;
+
+ do {
+ last = visIndex;
+ visIndex = locationToIndex(visibleLocation);
+
+ if (visIndex != -1) {
+ bounds = getCellBounds(visIndex, visIndex);
+ if (visIndex != lIndex && bounds != null &&
+ bounds.contains(visibleLocation)) {
+ location = visIndex;
+ if (isHorizontalWrap) {
+ visibleLocation.y = bounds.y + bounds.height;
+ if (visibleLocation.y >= lastPoint.y) {
+ // Past visible region, bail.
+ last = visIndex;
+ }
+ }
+ else {
+ visibleLocation.x = bounds.x + bounds.width;
+ if (visibleLocation.x >= lastPoint.x) {
+ // Past visible region, bail.
+ last = visIndex;
+ }
+ }
+
+ }
+ else {
+ last = visIndex;
+ }
+ }
+ } while (visIndex != -1 && last != visIndex);
+ }
+ }
+ }
+ return location;
+ }
+
+
+ /**
+ * Scrolls the list within an enclosing viewport to make the specified
+ * cell completely visible. This calls {@code scrollRectToVisible} with
+ * the bounds of the specified cell. For this method to work, the
+ * {@code JList} must be within a <code>JViewport</code>.
+ * <p>
+ * If the given index is outside the list's range of cells, this method
+ * results in nothing.
+ *
+ * @param index the index of the cell to make visible
+ * @see JComponent#scrollRectToVisible
+ * @see #getVisibleRect
+ */
+ public void ensureIndexIsVisible(int index) {
+ Rectangle cellBounds = getCellBounds(index, index);
+ if (cellBounds != null) {
+ scrollRectToVisible(cellBounds);
+ }
+ }
+
+ /**
+ * Turns on or off automatic drag handling. In order to enable automatic
+ * drag handling, this property should be set to {@code true}, and the
+ * list's {@code TransferHandler} needs to be {@code non-null}.
+ * The default value of the {@code dragEnabled} property is {@code false}.
+ * <p>
+ * The job of honoring this property, and recognizing a user drag gesture,
+ * lies with the look and feel implementation, and in particular, the list's
+ * {@code ListUI}. When automatic drag handling is enabled, most look and
+ * feels (including those that subclass {@code BasicLookAndFeel}) begin a
+ * drag and drop operation whenever the user presses the mouse button over
+ * an item and then moves the mouse a few pixels. Setting this property to
+ * {@code true} can therefore have a subtle effect on how selections behave.
+ * <p>
+ * If a look and feel is used that ignores this property, you can still
+ * begin a drag and drop operation by calling {@code exportAsDrag} on the
+ * list's {@code TransferHandler}.
+ *
+ * @param b whether or not to enable automatic drag handling
+ * @exception HeadlessException if
+ * <code>b</code> is <code>true</code> and
+ * <code>GraphicsEnvironment.isHeadless()</code>
+ * returns <code>true</code>
+ * @see java.awt.GraphicsEnvironment#isHeadless
+ * @see #getDragEnabled
+ * @see #setTransferHandler
+ * @see TransferHandler
+ * @since 1.4
+ *
+ * @beaninfo
+ * description: determines whether automatic drag handling is enabled
+ * bound: false
+ */
+ public void setDragEnabled(boolean b) {
+ if (b && GraphicsEnvironment.isHeadless()) {
+ throw new HeadlessException();
+ }
+ dragEnabled = b;
+ }
+
+ /**
+ * Returns whether or not automatic drag handling is enabled.
+ *
+ * @return the value of the {@code dragEnabled} property
+ * @see #setDragEnabled
+ * @since 1.4
+ */
+ public boolean getDragEnabled() {
+ return dragEnabled;
+ }
+
+ /**
+ * Sets the drop mode for this component. For backward compatibility,
+ * the default for this property is <code>DropMode.USE_SELECTION</code>.
+ * Usage of one of the other modes is recommended, however, for an
+ * improved user experience. <code>DropMode.ON</code>, for instance,
+ * offers similar behavior of showing items as selected, but does so without
+ * affecting the actual selection in the list.
+ * <p>
+ * <code>JList</code> supports the following drop modes:
+ * <ul>
+ * <li><code>DropMode.USE_SELECTION</code></li>
+ * <li><code>DropMode.ON</code></li>
+ * <li><code>DropMode.INSERT</code></li>
+ * <li><code>DropMode.ON_OR_INSERT</code></li>
+ * </ul>
+ * The drop mode is only meaningful if this component has a
+ * <code>TransferHandler</code> that accepts drops.
+ *
+ * @param dropMode the drop mode to use
+ * @throws IllegalArgumentException if the drop mode is unsupported
+ * or <code>null</code>
+ * @see #getDropMode
+ * @see #getDropLocation
+ * @see #setTransferHandler
+ * @see TransferHandler
+ * @since 1.6
+ */
+ public final void setDropMode(DropMode dropMode) {
+ if (dropMode != null) {
+ switch (dropMode) {
+ case USE_SELECTION:
+ case ON:
+ case INSERT:
+ case ON_OR_INSERT:
+ this.dropMode = dropMode;
+ return;
+ }
+ }
+
+ throw new IllegalArgumentException(dropMode + ": Unsupported drop mode for list");
+ }
+
+ /**
+ * Returns the drop mode for this component.
+ *
+ * @return the drop mode for this component
+ * @see #setDropMode
+ * @since 1.6
+ */
+ public final DropMode getDropMode() {
+ return dropMode;
+ }
+
+ /**
+ * Calculates a drop location in this component, representing where a
+ * drop at the given point should insert data.
+ *
+ * @param p the point to calculate a drop location for
+ * @return the drop location, or <code>null</code>
+ */
+ DropLocation dropLocationForPoint(Point p) {
+ DropLocation location = null;
+ Rectangle rect = null;
+
+ int index = locationToIndex(p);
+ if (index != -1) {
+ rect = getCellBounds(index, index);
+ }
+
+ switch(dropMode) {
+ case USE_SELECTION:
+ case ON:
+ location = new DropLocation(p,
+ (rect != null && rect.contains(p)) ? index : -1,
+ false);
+
+ break;
+ case INSERT:
+ if (index == -1) {
+ location = new DropLocation(p, getModel().getSize(), true);
+ break;
+ }
+
+ if (layoutOrientation == HORIZONTAL_WRAP) {
+ boolean ltr = getComponentOrientation().isLeftToRight();
+
+ if (SwingUtilities2.liesInHorizontal(rect, p, ltr, false) == TRAILING) {
+ index++;
+ // special case for below all cells
+ } else if (index == getModel().getSize() - 1 && p.y >= rect.y + rect.height) {
+ index++;
+ }
+ } else {
+ if (SwingUtilities2.liesInVertical(rect, p, false) == TRAILING) {
+ index++;
+ }
+ }
+
+ location = new DropLocation(p, index, true);
+
+ break;
+ case ON_OR_INSERT:
+ if (index == -1) {
+ location = new DropLocation(p, getModel().getSize(), true);
+ break;
+ }
+
+ boolean between = false;
+
+ if (layoutOrientation == HORIZONTAL_WRAP) {
+ boolean ltr = getComponentOrientation().isLeftToRight();
+
+ Section section = SwingUtilities2.liesInHorizontal(rect, p, ltr, true);
+ if (section == TRAILING) {
+ index++;
+ between = true;
+ // special case for below all cells
+ } else if (index == getModel().getSize() - 1 && p.y >= rect.y + rect.height) {
+ index++;
+ between = true;
+ } else if (section == LEADING) {
+ between = true;
+ }
+ } else {
+ Section section = SwingUtilities2.liesInVertical(rect, p, true);
+ if (section == LEADING) {
+ between = true;
+ } else if (section == TRAILING) {
+ index++;
+ between = true;
+ }
+ }
+
+ location = new DropLocation(p, index, between);
+
+ break;
+ default:
+ assert false : "Unexpected drop mode";
+ }
+
+ return location;
+ }
+
+ /**
+ * Called to set or clear the drop location during a DnD operation.
+ * In some cases, the component may need to use it's internal selection
+ * temporarily to indicate the drop location. To help facilitate this,
+ * this method returns and accepts as a parameter a state object.
+ * This state object can be used to store, and later restore, the selection
+ * state. Whatever this method returns will be passed back to it in
+ * future calls, as the state parameter. If it wants the DnD system to
+ * continue storing the same state, it must pass it back every time.
+ * Here's how this is used:
+ * <p>
+ * Let's say that on the first call to this method the component decides
+ * to save some state (because it is about to use the selection to show
+ * a drop index). It can return a state object to the caller encapsulating
+ * any saved selection state. On a second call, let's say the drop location
+ * is being changed to something else. The component doesn't need to
+ * restore anything yet, so it simply passes back the same state object
+ * to have the DnD system continue storing it. Finally, let's say this
+ * method is messaged with <code>null</code>. This means DnD
+ * is finished with this component for now, meaning it should restore
+ * state. At this point, it can use the state parameter to restore
+ * said state, and of course return <code>null</code> since there's
+ * no longer anything to store.
+ *
+ * @param location the drop location (as calculated by
+ * <code>dropLocationForPoint</code>) or <code>null</code>
+ * if there's no longer a valid drop location
+ * @param state the state object saved earlier for this component,
+ * or <code>null</code>
+ * @param forDrop whether or not the method is being called because an
+ * actual drop occurred
+ * @return any saved state for this component, or <code>null</code> if none
+ */
+ Object setDropLocation(TransferHandler.DropLocation location,
+ Object state,
+ boolean forDrop) {
+
+ Object retVal = null;
+ DropLocation listLocation = (DropLocation)location;
+
+ if (dropMode == DropMode.USE_SELECTION) {
+ if (listLocation == null) {
+ if (!forDrop && state != null) {
+ setSelectedIndices(((int[][])state)[0]);
+
+ int anchor = ((int[][])state)[1][0];
+ int lead = ((int[][])state)[1][1];
+
+ SwingUtilities2.setLeadAnchorWithoutSelection(
+ getSelectionModel(), lead, anchor);
+ }
+ } else {
+ if (dropLocation == null) {
+ int[] inds = getSelectedIndices();
+ retVal = new int[][] {inds, {getAnchorSelectionIndex(),
+ getLeadSelectionIndex()}};
+ } else {
+ retVal = state;
+ }
+
+ int index = listLocation.getIndex();
+ if (index == -1) {
+ clearSelection();
+ getSelectionModel().setAnchorSelectionIndex(-1);
+ getSelectionModel().setLeadSelectionIndex(-1);
+ } else {
+ setSelectionInterval(index, index);
+ }
+ }
+ }
+
+ DropLocation old = dropLocation;
+ dropLocation = listLocation;
+ firePropertyChange("dropLocation", old, dropLocation);
+
+ return retVal;
+ }
+
+ /**
+ * Returns the location that this component should visually indicate
+ * as the drop location during a DnD operation over the component,
+ * or {@code null} if no location is to currently be shown.
+ * <p>
+ * This method is not meant for querying the drop location
+ * from a {@code TransferHandler}, as the drop location is only
+ * set after the {@code TransferHandler}'s <code>canImport</code>
+ * has returned and has allowed for the location to be shown.
+ * <p>
+ * When this property changes, a property change event with
+ * name "dropLocation" is fired by the component.
+ * <p>
+ * By default, responsibility for listening for changes to this property
+ * and indicating the drop location visually lies with the list's
+ * {@code ListUI}, which may paint it directly and/or install a cell
+ * renderer to do so. Developers wishing to implement custom drop location
+ * painting and/or replace the default cell renderer, may need to honor
+ * this property.
+ *
+ * @return the drop location
+ * @see #setDropMode
+ * @see TransferHandler#canImport(TransferHandler.TransferSupport)
+ * @since 1.6
+ */
+ public final DropLocation getDropLocation() {
+ return dropLocation;
+ }
+
+ /**
+ * Returns the next list element whose {@code toString} value
+ * starts with the given prefix.
+ *
+ * @param prefix the string to test for a match
+ * @param startIndex the index for starting the search
+ * @param bias the search direction, either
+ * Position.Bias.Forward or Position.Bias.Backward.
+ * @return the index of the next list element that
+ * starts with the prefix; otherwise {@code -1}
+ * @exception IllegalArgumentException if prefix is {@code null}
+ * or startIndex is out of bounds
+ * @since 1.4
+ */
+ public int getNextMatch(String prefix, int startIndex, Position.Bias bias) {
+ ListModel<E> model = getModel();
+ int max = model.getSize();
+ if (prefix == null) {
+ throw new IllegalArgumentException();
+ }
+ if (startIndex < 0 || startIndex >= max) {
+ throw new IllegalArgumentException();
+ }
+ prefix = prefix.toUpperCase();
+
+ // start search from the next element after the selected element
+ int increment = (bias == Position.Bias.Forward) ? 1 : -1;
+ int index = startIndex;
+ do {
+ E element = model.getElementAt(index);
+
+ if (element != null) {
+ String string;
+
+ if (element instanceof String) {
+ string = ((String)element).toUpperCase();
+ }
+ else {
+ string = element.toString();
+ if (string != null) {
+ string = string.toUpperCase();
+ }
+ }
+
+ if (string != null && string.startsWith(prefix)) {
+ return index;
+ }
+ }
+ index = (index + increment + max) % max;
+ } while (index != startIndex);
+ return -1;
+ }
+
+ /**
+ * Returns the tooltip text to be used for the given event. This overrides
+ * {@code JComponent}'s {@code getToolTipText} to first check the cell
+ * renderer component for the cell over which the event occurred, returning
+ * its tooltip text, if any. This implementation allows you to specify
+ * tooltip text on the cell level, by using {@code setToolTipText} on your
+ * cell renderer component.
+ * <p>
+ * <strong>Note:</strong> For <code>JList</code> to properly display the
+ * tooltips of its renderers in this manner, <code>JList</code> must be a
+ * registered component with the <code>ToolTipManager</code>. This registration
+ * is done automatically in the constructor. However, if at a later point
+ * <code>JList</code> is unregistered, by way of a call to
+ * {@code setToolTipText(null)}, tips from the renderers will no longer display.
+ *
+ * @param event the {@code MouseEvent} to fetch the tooltip text for
+ * @see JComponent#setToolTipText
+ * @see JComponent#getToolTipText
+ */
+ public String getToolTipText(MouseEvent event) {
+ if(event != null) {
+ Point p = event.getPoint();
+ int index = locationToIndex(p);
+ ListCellRenderer<? super E> r = getCellRenderer();
+ Rectangle cellBounds;
+
+ if (index != -1 && r != null && (cellBounds =
+ getCellBounds(index, index)) != null &&
+ cellBounds.contains(p.x, p.y)) {
+ ListSelectionModel lsm = getSelectionModel();
+ Component rComponent = r.getListCellRendererComponent(
+ this, getModel().getElementAt(index), index,
+ lsm.isSelectedIndex(index),
+ (hasFocus() && (lsm.getLeadSelectionIndex() ==
+ index)));
+
+ if(rComponent instanceof JComponent) {
+ MouseEvent newEvent;
+
+ p.translate(-cellBounds.x, -cellBounds.y);
+ newEvent = new MouseEvent(rComponent, event.getID(),
+ event.getWhen(),
+ event.getModifiers(),
+ p.x, p.y,
+ event.getXOnScreen(),
+ event.getYOnScreen(),
+ event.getClickCount(),
+ event.isPopupTrigger(),
+ MouseEvent.NOBUTTON);
+
+ String tip = ((JComponent)rComponent).getToolTipText(
+ newEvent);
+
+ if (tip != null) {
+ return tip;
+ }
+ }
+ }
+ }
+ return super.getToolTipText();
+ }
+
+ /**
+ * --- ListUI Delegations ---
+ */
+
+
+ /**
+ * Returns the cell index closest to the given location in the list's
+ * coordinate system. To determine if the cell actually contains the
+ * specified location, compare the point against the cell's bounds,
+ * as provided by {@code getCellBounds}. This method returns {@code -1}
+ * if the model is empty
+ * <p>
+ * This is a cover method that delegates to the method of the same name
+ * in the list's {@code ListUI}. It returns {@code -1} if the list has
+ * no {@code ListUI}.
+ *
+ * @param location the coordinates of the point
+ * @return the cell index closest to the given location, or {@code -1}
+ */
+ public int locationToIndex(Point location) {
+ ListUI ui = getUI();
+ return (ui != null) ? ui.locationToIndex(this, location) : -1;
+ }
+
+
+ /**
+ * Returns the origin of the specified item in the list's coordinate
+ * system. This method returns {@code null} if the index isn't valid.
+ * <p>
+ * This is a cover method that delegates to the method of the same name
+ * in the list's {@code ListUI}. It returns {@code null} if the list has
+ * no {@code ListUI}.
+ *
+ * @param index the cell index
+ * @return the origin of the cell, or {@code null}
+ */
+ public Point indexToLocation(int index) {
+ ListUI ui = getUI();
+ return (ui != null) ? ui.indexToLocation(this, index) : null;
+ }
+
+
+ /**
+ * Returns the bounding rectangle, in the list's coordinate system,
+ * for the range of cells specified by the two indices.
+ * These indices can be supplied in any order.
+ * <p>
+ * If the smaller index is outside the list's range of cells, this method
+ * returns {@code null}. If the smaller index is valid, but the larger
+ * index is outside the list's range, the bounds of just the first index
+ * is returned. Otherwise, the bounds of the valid range is returned.
+ * <p>
+ * This is a cover method that delegates to the method of the same name
+ * in the list's {@code ListUI}. It returns {@code null} if the list has
+ * no {@code ListUI}.
+ *
+ * @param index0 the first index in the range
+ * @param index1 the second index in the range
+ * @return the bounding rectangle for the range of cells, or {@code null}
+ */
+ public Rectangle getCellBounds(int index0, int index1) {
+ ListUI ui = getUI();
+ return (ui != null) ? ui.getCellBounds(this, index0, index1) : null;
+ }
+
+
+ /**
+ * --- ListModel Support ---
+ */
+
+
+ /**
+ * Returns the data model that holds the list of items displayed
+ * by the <code>JList</code> component.
+ *
+ * @return the <code>ListModel</code> that provides the displayed
+ * list of items
+ * @see #setModel
+ */
+ public ListModel<E> getModel() {
+ return dataModel;
+ }
+
+ /**
+ * Sets the model that represents the contents or "value" of the
+ * list, notifies property change listeners, and then clears the
+ * list's selection.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param model the <code>ListModel</code> that provides the
+ * list of items for display
+ * @exception IllegalArgumentException if <code>model</code> is
+ * <code>null</code>
+ * @see #getModel
+ * @see #clearSelection
+ * @beaninfo
+ * bound: true
+ * attribute: visualUpdate true
+ * description: The object that contains the data to be drawn by this JList.
+ */
+ public void setModel(ListModel<E> model) {
+ if (model == null) {
+ throw new IllegalArgumentException("model must be non null");
+ }
+ ListModel<E> oldValue = dataModel;
+ dataModel = model;
+ firePropertyChange("model", oldValue, dataModel);
+ clearSelection();
+ }
+
+
+ /**
+ * Constructs a read-only <code>ListModel</code> from an array of items,
+ * and calls {@code setModel} with this model.
+ * <p>
+ * Attempts to pass a {@code null} value to this method results in
+ * undefined behavior and, most likely, exceptions. The created model
+ * references the given array directly. Attempts to modify the array
+ * after invoking this method results in undefined behavior.
+ *
+ * @param listData an array of {@code E} containing the items to
+ * display in the list
+ * @see #setModel
+ */
+ public void setListData(final E[] listData) {
+ setModel (
+ new AbstractListModel<E>() {
+ public int getSize() { return listData.length; }
+ public E getElementAt(int i) { return listData[i]; }
+ }
+ );
+ }
+
+
+ /**
+ * Constructs a read-only <code>ListModel</code> from a <code>Vector</code>
+ * and calls {@code setModel} with this model.
+ * <p>
+ * Attempts to pass a {@code null} value to this method results in
+ * undefined behavior and, most likely, exceptions. The created model
+ * references the given {@code Vector} directly. Attempts to modify the
+ * {@code Vector} after invoking this method results in undefined behavior.
+ *
+ * @param listData a <code>Vector</code> containing the items to
+ * display in the list
+ * @see #setModel
+ */
+ public void setListData(final Vector<? extends E> listData) {
+ setModel (
+ new AbstractListModel<E>() {
+ public int getSize() { return listData.size(); }
+ public E getElementAt(int i) { return listData.elementAt(i); }
+ }
+ );
+ }
+
+
+ /**
+ * --- ListSelectionModel delegations and extensions ---
+ */
+
+
+ /**
+ * Returns an instance of {@code DefaultListSelectionModel}; called
+ * during construction to initialize the list's selection model
+ * property.
+ *
+ * @return a {@code DefaultListSelecitonModel}, used to initialize
+ * the list's selection model property during construction
+ * @see #setSelectionModel
+ * @see DefaultListSelectionModel
+ */
+ protected ListSelectionModel createSelectionModel() {
+ return new DefaultListSelectionModel();
+ }
+
+
+ /**
+ * Returns the current selection model. The selection model maintains the
+ * selection state of the list. See the class level documentation for more
+ * details.
+ *
+ * @return the <code>ListSelectionModel</code> that maintains the
+ * list's selections
+ *
+ * @see #setSelectionModel
+ * @see ListSelectionModel
+ */
+ public ListSelectionModel getSelectionModel() {
+ return selectionModel;
+ }
+
+
+ /**
+ * Notifies {@code ListSelectionListener}s added directly to the list
+ * of selection changes made to the selection model. {@code JList}
+ * listens for changes made to the selection in the selection model,
+ * and forwards notification to listeners added to the list directly,
+ * by calling this method.
+ * <p>
+ * This method constructs a {@code ListSelectionEvent} with this list
+ * as the source, and the specified arguments, and sends it to the
+ * registered {@code ListSelectionListeners}.
+ *
+ * @param firstIndex the first index in the range, {@code <= lastIndex}
+ * @param lastIndex the last index in the range, {@code >= firstIndex}
+ * @param isAdjusting whether or not this is one in a series of
+ * multiple events, where changes are still being made
+ *
+ * @see #addListSelectionListener
+ * @see #removeListSelectionListener
+ * @see javax.swing.event.ListSelectionEvent
+ * @see EventListenerList
+ */
+ protected void fireSelectionValueChanged(int firstIndex, int lastIndex,
+ boolean isAdjusting)
+ {
+ Object[] listeners = listenerList.getListenerList();
+ ListSelectionEvent e = null;
+
+ for (int i = listeners.length - 2; i >= 0; i -= 2) {
+ if (listeners[i] == ListSelectionListener.class) {
+ if (e == null) {
+ e = new ListSelectionEvent(this, firstIndex, lastIndex,
+ isAdjusting);
+ }
+ ((ListSelectionListener)listeners[i+1]).valueChanged(e);
+ }
+ }
+ }
+
+
+ /* A ListSelectionListener that forwards ListSelectionEvents from
+ * the selectionModel to the JList ListSelectionListeners. The
+ * forwarded events only differ from the originals in that their
+ * source is the JList instead of the selectionModel itself.
+ */
+ private class ListSelectionHandler implements ListSelectionListener, Serializable
+ {
+ public void valueChanged(ListSelectionEvent e) {
+ fireSelectionValueChanged(e.getFirstIndex(),
+ e.getLastIndex(),
+ e.getValueIsAdjusting());
+ }
+ }
+
+
+ /**
+ * Adds a listener to the list, to be notified each time a change to the
+ * selection occurs; the preferred way of listening for selection state
+ * changes. {@code JList} takes care of listening for selection state
+ * changes in the selection model, and notifies the given listener of
+ * each change. {@code ListSelectionEvent}s sent to the listener have a
+ * {@code source} property set to this list.
+ *
+ * @param listener the {@code ListSelectionListener} to add
+ * @see #getSelectionModel
+ * @see #getListSelectionListeners
+ */
+ public void addListSelectionListener(ListSelectionListener listener)
+ {
+ if (selectionListener == null) {
+ selectionListener = new ListSelectionHandler();
+ getSelectionModel().addListSelectionListener(selectionListener);
+ }
+
+ listenerList.add(ListSelectionListener.class, listener);
+ }
+
+
+ /**
+ * Removes a selection listener from the list.
+ *
+ * @param listener the {@code ListSelectionListener} to remove
+ * @see #addListSelectionListener
+ * @see #getSelectionModel
+ */
+ public void removeListSelectionListener(ListSelectionListener listener) {
+ listenerList.remove(ListSelectionListener.class, listener);
+ }
+
+
+ /**
+ * Returns an array of all the {@code ListSelectionListener}s added
+ * to this {@code JList} by way of {@code addListSelectionListener}.
+ *
+ * @return all of the {@code ListSelectionListener}s on this list, or
+ * an empty array if no listeners have been added
+ * @see #addListSelectionListener
+ * @since 1.4
+ */
+ public ListSelectionListener[] getListSelectionListeners() {
+ return listenerList.getListeners(ListSelectionListener.class);
+ }
+
+
+ /**
+ * Sets the <code>selectionModel</code> for the list to a
+ * non-<code>null</code> <code>ListSelectionModel</code>
+ * implementation. The selection model handles the task of making single
+ * selections, selections of contiguous ranges, and non-contiguous
+ * selections.
+ * <p>
+ * This is a JavaBeans bound property.
+ *
+ * @param selectionModel the <code>ListSelectionModel</code> that
+ * implements the selections
+ * @exception IllegalArgumentException if <code>selectionModel</code>
+ * is <code>null</code>
+ * @see #getSelectionModel
+ * @beaninfo
+ * bound: true
+ * description: The selection model, recording which cells are selected.
+ */
+ public void setSelectionModel(ListSelectionModel selectionModel) {
+ if (selectionModel == null) {
+ throw new IllegalArgumentException("selectionModel must be non null");
+ }
+
+ /* Remove the forwarding ListSelectionListener from the old
+ * selectionModel, and add it to the new one, if necessary.
+ */
+ if (selectionListener != null) {
+ this.selectionModel.removeListSelectionListener(selectionListener);
+ selectionModel.addListSelectionListener(selectionListener);
+ }
+
+ ListSelectionModel oldValue = this.selectionModel;
+ this.selectionModel = selectionModel;
+ firePropertyChange("selectionModel", oldValue, selectionModel);
+ }
+
+
+ /**
+ * Sets the selection mode for the list. This is a cover method that sets
+ * the selection mode directly on the selection model.
+ * <p>
+ * The following list describes the accepted selection modes:
+ * <ul>
+ * <li>{@code ListSelectionModel.SINGLE_SELECTION} -
+ * Only one list index can be selected at a time. In this mode,
+ * {@code setSelectionInterval} and {@code addSelectionInterval} are
+ * equivalent, both replacing the current selection with the index
+ * represented by the second argument (the "lead").
+ * <li>{@code ListSelectionModel.SINGLE_INTERVAL_SELECTION} -
+ * Only one contiguous interval can be selected at a time.
+ * In this mode, {@code addSelectionInterval} behaves like
+ * {@code setSelectionInterval} (replacing the current selection},
+ * unless the given interval is immediately adjacent to or overlaps
+ * the existing selection, and can be used to grow the selection.
+ * <li>{@code ListSelectionModel.MULTIPLE_INTERVAL_SELECTION} -
+ * In this mode, there's no restriction on what can be selected.
+ * This mode is the default.
+ * </ul>
+ *
+ * @param selectionMode the selection mode
+ * @see #getSelectionMode
+ * @throws IllegalArgumentException if the selection mode isn't
+ * one of those allowed
+ * @beaninfo
+ * description: The selection mode.
+ * enum: SINGLE_SELECTION ListSelectionModel.SINGLE_SELECTION
+ * SINGLE_INTERVAL_SELECTION ListSelectionModel.SINGLE_INTERVAL_SELECTION
+ * MULTIPLE_INTERVAL_SELECTION ListSelectionModel.MULTIPLE_INTERVAL_SELECTION
+ */
+ public void setSelectionMode(int selectionMode) {
+ getSelectionModel().setSelectionMode(selectionMode);
+ }
+
+ /**
+ * Returns the current selection mode for the list. This is a cover
+ * method that delegates to the method of the same name on the
+ * list's selection model.
+ *
+ * @return the current selection mode
+ * @see #setSelectionMode
+ */
+ public int getSelectionMode() {
+ return getSelectionModel().getSelectionMode();
+ }
+
+
+ /**
+ * Returns the anchor selection index. This is a cover method that
+ * delegates to the method of the same name on the list's selection model.
+ *
+ * @return the anchor selection index
+ * @see ListSelectionModel#getAnchorSelectionIndex
+ */
+ public int getAnchorSelectionIndex() {
+ return getSelectionModel().getAnchorSelectionIndex();
+ }
+
+
+ /**
+ * Returns the lead selection index. This is a cover method that
+ * delegates to the method of the same name on the list's selection model.
+ *
+ * @return the lead selection index
+ * @see ListSelectionModel#getLeadSelectionIndex
+ * @beaninfo
+ * description: The lead selection index.
+ */
+ public int getLeadSelectionIndex() {
+ return getSelectionModel().getLeadSelectionIndex();
+ }
+
+
+ /**
+ * Returns the smallest selected cell index, or {@code -1} if the selection
+ * is empty. This is a cover method that delegates to the method of the same
+ * name on the list's selection model.
+ *
+ * @return the smallest selected cell index, or {@code -1}
+ * @see ListSelectionModel#getMinSelectionIndex
+ */
+ public int getMinSelectionIndex() {
+ return getSelectionModel().getMinSelectionIndex();
+ }
+
+
+ /**
+ * Returns the largest selected cell index, or {@code -1} if the selection
+ * is empty. This is a cover method that delegates to the method of the same
+ * name on the list's selection model.
+ *
+ * @return the largest selected cell index
+ * @see ListSelectionModel#getMaxSelectionIndex
+ */
+ public int getMaxSelectionIndex() {
+ return getSelectionModel().getMaxSelectionIndex();
+ }
+
+
+ /**
+ * Returns {@code true} if the specified index is selected,
+ * else {@code false}. This is a cover method that delegates to the method
+ * of the same name on the list's selection model.
+ *
+ * @param index index to be queried for selection state
+ * @return {@code true} if the specified index is selected,
+ * else {@code false}
+ * @see ListSelectionModel#isSelectedIndex
+ * @see #setSelectedIndex
+ */
+ public boolean isSelectedIndex(int index) {
+ return getSelectionModel().isSelectedIndex(index);
+ }
+
+
+ /**
+ * Returns {@code true} if nothing is selected, else {@code false}.
+ * This is a cover method that delegates to the method of the same
+ * name on the list's selection model.
+ *
+ * @return {@code true} if nothing is selected, else {@code false}
+ * @see ListSelectionModel#isSelectionEmpty
+ * @see #clearSelection
+ */
+ public boolean isSelectionEmpty() {
+ return getSelectionModel().isSelectionEmpty();
+ }
+
+
+ /**
+ * Clears the selection; after calling this method, {@code isSelectionEmpty}
+ * will return {@code true}. This is a cover method that delegates to the
+ * method of the same name on the list's selection model.
+ *
+ * @see ListSelectionModel#clearSelection
+ * @see #isSelectionEmpty
+ */
+ public void clearSelection() {
+ getSelectionModel().clearSelection();
+ }
+
+
+ /**
+ * Selects the specified interval. Both {@code anchor} and {@code lead}
+ * indices are included. {@code anchor} doesn't have to be less than or
+ * equal to {@code lead}. This is a cover method that delegates to the
+ * method of the same name on the list's selection model.
+ * <p>
+ * Refer to the documentation of the selection model class being used
+ * for details on how values less than {@code 0} are handled.
+ *
+ * @param anchor the first index to select
+ * @param lead the last index to select
+ * @see ListSelectionModel#setSelectionInterval
+ * @see DefaultListSelectionModel#setSelectionInterval
+ * @see #createSelectionModel
+ * @see #addSelectionInterval
+ * @see #removeSelectionInterval
+ */
+ public void setSelectionInterval(int anchor, int lead) {
+ getSelectionModel().setSelectionInterval(anchor, lead);
+ }
+
+
+ /**
+ * Sets the selection to be the union of the specified interval with current
+ * selection. Both the {@code anchor} and {@code lead} indices are
+ * included. {@code anchor} doesn't have to be less than or
+ * equal to {@code lead}. This is a cover method that delegates to the
+ * method of the same name on the list's selection model.
+ * <p>
+ * Refer to the documentation of the selection model class being used
+ * for details on how values less than {@code 0} are handled.
+ *
+ * @param anchor the first index to add to the selection
+ * @param lead the last index to add to the selection
+ * @see ListSelectionModel#addSelectionInterval
+ * @see DefaultListSelectionModel#addSelectionInterval
+ * @see #createSelectionModel
+ * @see #setSelectionInterval
+ * @see #removeSelectionInterval
+ */
+ public void addSelectionInterval(int anchor, int lead) {
+ getSelectionModel().addSelectionInterval(anchor, lead);
+ }
+
+
+ /**
+ * Sets the selection to be the set difference of the specified interval
+ * and the current selection. Both the {@code index0} and {@code index1}
+ * indices are removed. {@code index0} doesn't have to be less than or
+ * equal to {@code index1}. This is a cover method that delegates to the
+ * method of the same name on the list's selection model.
+ * <p>
+ * Refer to the documentation of the selection model class being used
+ * for details on how values less than {@code 0} are handled.
+ *
+ * @param index0 the first index to remove from the selection
+ * @param index1 the last index to remove from the selection
+ * @see ListSelectionModel#removeSelectionInterval
+ * @see DefaultListSelectionModel#removeSelectionInterval
+ * @see #createSelectionModel
+ * @see #setSelectionInterval
+ * @see #addSelectionInterval
+ */
+ public void removeSelectionInterval(int index0, int index1) {
+ getSelectionModel().removeSelectionInterval(index0, index1);
+ }
+
+
+ /**
+ * Sets the selection model's {@code valueIsAdjusting} property. When
+ * {@code true}, upcoming changes to selection should be considered part
+ * of a single change. This property is used internally and developers
+ * typically need not call this method. For example, when the model is being
+ * updated in response to a user drag, the value of the property is set
+ * to {@code true} when the drag is initiated and set to {@code false}
+ * when the drag is finished. This allows listeners to update only
+ * when a change has been finalized, rather than handling all of the
+ * intermediate values.
+ * <p>
+ * You may want to use this directly if making a series of changes
+ * that should be considered part of a single change.
+ * <p>
+ * This is a cover method that delegates to the method of the same name on
+ * the list's selection model. See the documentation for
+ * {@link javax.swing.ListSelectionModel#setValueIsAdjusting} for
+ * more details.
+ *
+ * @param b the new value for the property
+ * @see ListSelectionModel#setValueIsAdjusting
+ * @see javax.swing.event.ListSelectionEvent#getValueIsAdjusting
+ * @see #getValueIsAdjusting
+ */
+ public void setValueIsAdjusting(boolean b) {
+ getSelectionModel().setValueIsAdjusting(b);
+ }
+
+
+ /**
+ * Returns the value of the selection model's {@code isAdjusting} property.
+ * <p>
+ * This is a cover method that delegates to the method of the same name on
+ * the list's selection model.
+ *
+ * @return the value of the selection model's {@code isAdjusting} property.
+ *
+ * @see #setValueIsAdjusting
+ * @see ListSelectionModel#getValueIsAdjusting
+ */
+ public boolean getValueIsAdjusting() {
+ return getSelectionModel().getValueIsAdjusting();
+ }
+
+
+ /**
+ * Returns an array of all of the selected indices, in increasing
+ * order.
+ *
+ * @return all of the selected indices, in increasing order,
+ * or an empty array if nothing is selected
+ * @see #removeSelectionInterval
+ * @see #addListSelectionListener
+ */
+ @Transient
+ public int[] getSelectedIndices() {
+ ListSelectionModel sm = getSelectionModel();
+ int iMin = sm.getMinSelectionIndex();
+ int iMax = sm.getMaxSelectionIndex();
+
+ if ((iMin < 0) || (iMax < 0)) {
+ return new int[0];
+ }
+
+ int[] rvTmp = new int[1+ (iMax - iMin)];
+ int n = 0;
+ for(int i = iMin; i <= iMax; i++) {
+ if (sm.isSelectedIndex(i)) {
+ rvTmp[n++] = i;
+ }
+ }
+ int[] rv = new int[n];
+ System.arraycopy(rvTmp, 0, rv, 0, n);
+ return rv;
+ }
+
+
+ /**
+ * Selects a single cell. Does nothing if the given index is greater
+ * than or equal to the model size. This is a convenience method that uses
+ * {@code setSelectionInterval} on the selection model. Refer to the
+ * documentation for the selection model class being used for details on
+ * how values less than {@code 0} are handled.
+ *
+ * @param index the index of the cell to select
+ * @see ListSelectionModel#setSelectionInterval
+ * @see #isSelectedIndex
+ * @see #addListSelectionListener
+ * @beaninfo
+ * description: The index of the selected cell.
+ */
+ public void setSelectedIndex(int index) {
+ if (index >= getModel().getSize()) {
+ return;
+ }
+ getSelectionModel().setSelectionInterval(index, index);
+ }
+
+
+ /**
+ * Changes the selection to be the set of indices specified by the given
+ * array. Indices greater than or equal to the model size are ignored.
+ * This is a convenience method that clears the selection and then uses
+ * {@code addSelectionInterval} on the selection model to add the indices.
+ * Refer to the documentation of the selection model class being used for
+ * details on how values less than {@code 0} are handled.
+ *
+ * @param indices an array of the indices of the cells to select,
+ * {@code non-null}
+ * @see ListSelectionModel#addSelectionInterval
+ * @see #isSelectedIndex
+ * @see #addListSelectionListener
+ * @throws NullPointerException if the given array is {@code null}
+ */
+ public void setSelectedIndices(int[] indices) {
+ ListSelectionModel sm = getSelectionModel();
+ sm.clearSelection();
+ int size = getModel().getSize();
+ for (int i : indices) {
+ if (i < size) {
+ sm.addSelectionInterval(i, i);
+ }
+ }
+ }
+
+
+ /**
+ * Returns an array of all the selected values, in increasing order based
+ * on their indices in the list.
+ *
+ * @return the selected values, or an empty array if nothing is selected
+ * @see #isSelectedIndex
+ * @see #getModel
+ * @see #addListSelectionListener
+ *
+ * @deprecated As of JDK 1.7, replaced by {@link #getSelectedValuesList()}
+ */
+ @Deprecated
+ public Object[] getSelectedValues() {
+ ListSelectionModel sm = getSelectionModel();
+ ListModel<E> dm = getModel();
+
+ int iMin = sm.getMinSelectionIndex();
+ int iMax = sm.getMaxSelectionIndex();
+
+ if ((iMin < 0) || (iMax < 0)) {
+ return new Object[0];
+ }
+
+ Object[] rvTmp = new Object[1+ (iMax - iMin)];
+ int n = 0;
+ for(int i = iMin; i <= iMax; i++) {
+ if (sm.isSelectedIndex(i)) {
+ rvTmp[n++] = dm.getElementAt(i);
+ }
+ }
+ Object[] rv = new Object[n];
+ System.arraycopy(rvTmp, 0, rv, 0, n);
+ return rv;
+ }
+
+ /**
+ * Returns a list of all the selected items, in increasing order based
+ * on their indices in the list.
+ *
+ * @return the selected items, or an empty list if nothing is selected
+ * @see #isSelectedIndex
+ * @see #getModel
+ * @see #addListSelectionListener
+ *
+ * @since 1.7
+ */
+ public List<E> getSelectedValuesList() {
+ ListSelectionModel sm = getSelectionModel();
+ ListModel<E> dm = getModel();
+
+ int iMin = sm.getMinSelectionIndex();
+ int iMax = sm.getMaxSelectionIndex();
+
+ if ((iMin < 0) || (iMax < 0)) {
+ return Collections.emptyList();
+ }
+
+ List<E> selectedItems = new ArrayList<E>();
+ for(int i = iMin; i <= iMax; i++) {
+ if (sm.isSelectedIndex(i)) {
+ selectedItems.add(dm.getElementAt(i));
+ }
+ }
+ return selectedItems;
+ }
+
+
+ /**
+ * Returns the smallest selected cell index; <i>the selection</i> when only
+ * a single item is selected in the list. When multiple items are selected,
+ * it is simply the smallest selected index. Returns {@code -1} if there is
+ * no selection.
+ * <p>
+ * This method is a cover that delegates to {@code getMinSelectionIndex}.
+ *
+ * @return the smallest selected cell index
+ * @see #getMinSelectionIndex
+ * @see #addListSelectionListener
+ */
+ public int getSelectedIndex() {
+ return getMinSelectionIndex();
+ }
+
+
+ /**
+ * Returns the value for the smallest selected cell index;
+ * <i>the selected value</i> when only a single item is selected in the
+ * list. When multiple items are selected, it is simply the value for the
+ * smallest selected index. Returns {@code null} if there is no selection.
+ * <p>
+ * This is a convenience method that simply returns the model value for
+ * {@code getMinSelectionIndex}.
+ *
+ * @return the first selected value
+ * @see #getMinSelectionIndex
+ * @see #getModel
+ * @see #addListSelectionListener
+ */
+ public E getSelectedValue() {
+ int i = getMinSelectionIndex();
+ return (i == -1) ? null : getModel().getElementAt(i);
+ }
+
+
+ /**
+ * Selects the specified object from the list.
+ *
+ * @param anObject the object to select
+ * @param shouldScroll {@code true} if the list should scroll to display
+ * the selected object, if one exists; otherwise {@code false}
+ */
+ public void setSelectedValue(Object anObject,boolean shouldScroll) {
+ if(anObject == null)
+ setSelectedIndex(-1);
+ else if(!anObject.equals(getSelectedValue())) {
+ int i,c;
+ ListModel<E> dm = getModel();
+ for(i=0,c=dm.getSize();i<c;i++)
+ if(anObject.equals(dm.getElementAt(i))){
+ setSelectedIndex(i);
+ if(shouldScroll)
+ ensureIndexIsVisible(i);
+ repaint(); /** FIX-ME setSelectedIndex does not redraw all the time with the basic l&f**/
+ return;
+ }
+ setSelectedIndex(-1);
+ }
+ repaint(); /** FIX-ME setSelectedIndex does not redraw all the time with the basic l&f**/
+ }
+
+
+
+ /**
+ * --- The Scrollable Implementation ---
+ */
+
+ private void checkScrollableParameters(Rectangle visibleRect, int orientation) {
+ if (visibleRect == null) {
+ throw new IllegalArgumentException("visibleRect must be non-null");
+ }
+ switch (orientation) {
+ case SwingConstants.VERTICAL:
+ case SwingConstants.HORIZONTAL:
+ break;
+ default:
+ throw new IllegalArgumentException("orientation must be one of: VERTICAL, HORIZONTAL");
+ }
+ }
+
+
+ /**
+ * Computes the size of viewport needed to display {@code visibleRowCount}
+ * rows. The value returned by this method depends on the layout
+ * orientation:
+ * <p>
+ * <b>{@code VERTICAL}:</b>
+ * <br>
+ * This is trivial if both {@code fixedCellWidth} and {@code fixedCellHeight}
+ * have been set (either explicitly or by specifying a prototype cell value).
+ * The width is simply the {@code fixedCellWidth} plus the list's horizontal
+ * insets. The height is the {@code fixedCellHeight} multiplied by the
+ * {@code visibleRowCount}, plus the list's vertical insets.
+ * <p>
+ * If either {@code fixedCellWidth} or {@code fixedCellHeight} haven't been
+ * specified, heuristics are used. If the model is empty, the width is
+ * the {@code fixedCellWidth}, if greater than {@code 0}, or a hard-coded
+ * value of {@code 256}. The height is the {@code fixedCellHeight} multiplied
+ * by {@code visibleRowCount}, if {@code fixedCellHeight} is greater than
+ * {@code 0}, otherwise it is a hard-coded value of {@code 16} multiplied by
+ * {@code visibleRowCount}.
+ * <p>
+ * If the model isn't empty, the width is the preferred size's width,
+ * typically the width of the widest list element. The height is the
+ * {@code fixedCellHeight} multiplied by the {@code visibleRowCount},
+ * plus the list's vertical insets.
+ * <p>
+ * <b>{@code VERTICAL_WRAP} or {@code HORIZONTAL_WRAP}:</b>
+ * <br>
+ * This method simply returns the value from {@code getPreferredSize}.
+ * The list's {@code ListUI} is expected to override {@code getPreferredSize}
+ * to return an appropriate value.
+ *
+ * @return a dimension containing the size of the viewport needed
+ * to display {@code visibleRowCount} rows
+ * @see #getPreferredScrollableViewportSize
+ * @see #setPrototypeCellValue
+ */
+ public Dimension getPreferredScrollableViewportSize()
+ {
+ if (getLayoutOrientation() != VERTICAL) {
+ return getPreferredSize();
+ }
+ Insets insets = getInsets();
+ int dx = insets.left + insets.right;
+ int dy = insets.top + insets.bottom;
+
+ int visibleRowCount = getVisibleRowCount();
+ int fixedCellWidth = getFixedCellWidth();
+ int fixedCellHeight = getFixedCellHeight();
+
+ if ((fixedCellWidth > 0) && (fixedCellHeight > 0)) {
+ int width = fixedCellWidth + dx;
+ int height = (visibleRowCount * fixedCellHeight) + dy;
+ return new Dimension(width, height);
+ }
+ else if (getModel().getSize() > 0) {
+ int width = getPreferredSize().width;
+ int height;
+ Rectangle r = getCellBounds(0, 0);
+ if (r != null) {
+ height = (visibleRowCount * r.height) + dy;
+ }
+ else {
+ // Will only happen if UI null, shouldn't matter what we return
+ height = 1;
+ }
+ return new Dimension(width, height);
+ }
+ else {
+ fixedCellWidth = (fixedCellWidth > 0) ? fixedCellWidth : 256;
+ fixedCellHeight = (fixedCellHeight > 0) ? fixedCellHeight : 16;
+ return new Dimension(fixedCellWidth, fixedCellHeight * visibleRowCount);
+ }
+ }
+
+
+ /**
+ * Returns the distance to scroll to expose the next or previous
+ * row (for vertical scrolling) or column (for horizontal scrolling).
+ * <p>
+ * For horizontal scrolling, if the layout orientation is {@code VERTICAL},
+ * then the list's font size is returned (or {@code 1} if the font is
+ * {@code null}).
+ *
+ * @param visibleRect the view area visible within the viewport
+ * @param orientation {@code SwingConstants.HORIZONTAL} or
+ * {@code SwingConstants.VERTICAL}
+ * @param direction less or equal to zero to scroll up/back,
+ * greater than zero for down/forward
+ * @return the "unit" increment for scrolling in the specified direction;
+ * always positive
+ * @see #getScrollableBlockIncrement
+ * @see Scrollable#getScrollableUnitIncrement
+ * @throws IllegalArgumentException if {@code visibleRect} is {@code null}, or
+ * {@code orientation} isn't one of {@code SwingConstants.VERTICAL} or
+ * {@code SwingConstants.HORIZONTAL}
+ */
+ public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction)
+ {
+ checkScrollableParameters(visibleRect, orientation);
+
+ if (orientation == SwingConstants.VERTICAL) {
+ int row = locationToIndex(visibleRect.getLocation());
+
+ if (row == -1) {
+ return 0;
+ }
+ else {
+ /* Scroll Down */
+ if (direction > 0) {
+ Rectangle r = getCellBounds(row, row);
+ return (r == null) ? 0 : r.height - (visibleRect.y - r.y);
+ }
+ /* Scroll Up */
+ else {
+ Rectangle r = getCellBounds(row, row);
+
+ /* The first row is completely visible and it's row 0.
+ * We're done.
+ */
+ if ((r.y == visibleRect.y) && (row == 0)) {
+ return 0;
+ }
+ /* The first row is completely visible, return the
+ * height of the previous row or 0 if the first row
+ * is the top row of the list.
+ */
+ else if (r.y == visibleRect.y) {
+ Point loc = r.getLocation();
+ loc.y--;
+ int prevIndex = locationToIndex(loc);
+ Rectangle prevR = getCellBounds(prevIndex, prevIndex);
+
+ if (prevR == null || prevR.y >= r.y) {
+ return 0;
+ }
+ return prevR.height;
+ }
+ /* The first row is partially visible, return the
+ * height of hidden part.
+ */
+ else {
+ return visibleRect.y - r.y;
+ }
+ }
+ }
+ } else if (orientation == SwingConstants.HORIZONTAL &&
+ getLayoutOrientation() != JList.VERTICAL) {
+ boolean leftToRight = getComponentOrientation().isLeftToRight();
+ int index;
+ Point leadingPoint;
+
+ if (leftToRight) {
+ leadingPoint = visibleRect.getLocation();
+ }
+ else {
+ leadingPoint = new Point(visibleRect.x + visibleRect.width -1,
+ visibleRect.y);
+ }
+ index = locationToIndex(leadingPoint);
+
+ if (index != -1) {
+ Rectangle cellBounds = getCellBounds(index, index);
+ if (cellBounds != null && cellBounds.contains(leadingPoint)) {
+ int leadingVisibleEdge;
+ int leadingCellEdge;
+
+ if (leftToRight) {
+ leadingVisibleEdge = visibleRect.x;
+ leadingCellEdge = cellBounds.x;
+ }
+ else {
+ leadingVisibleEdge = visibleRect.x + visibleRect.width;
+ leadingCellEdge = cellBounds.x + cellBounds.width;
+ }
+
+ if (leadingCellEdge != leadingVisibleEdge) {
+ if (direction < 0) {
+ // Show remainder of leading cell
+ return Math.abs(leadingVisibleEdge - leadingCellEdge);
+
+ }
+ else if (leftToRight) {
+ // Hide rest of leading cell
+ return leadingCellEdge + cellBounds.width - leadingVisibleEdge;
+ }
+ else {
+ // Hide rest of leading cell
+ return leadingVisibleEdge - cellBounds.x;
+ }
+ }
+ // ASSUME: All cells are the same width
+ return cellBounds.width;
+ }
+ }
+ }
+ Font f = getFont();
+ return (f != null) ? f.getSize() : 1;
+ }
+
+
+ /**
+ * Returns the distance to scroll to expose the next or previous block.
+ * <p>
+ * For vertical scrolling, the following rules are used:
+ * <ul>
+ * <li>if scrolling down, returns the distance to scroll so that the last
+ * visible element becomes the first completely visible element
+ * <li>if scrolling up, returns the distance to scroll so that the first
+ * visible element becomes the last completely visible element
+ * <li>returns {@code visibleRect.height} if the list is empty
+ * </ul>
+ * <p>
+ * For horizontal scrolling, when the layout orientation is either
+ * {@code VERTICAL_WRAP} or {@code HORIZONTAL_WRAP}:
+ * <ul>
+ * <li>if scrolling right, returns the distance to scroll so that the
+ * last visible element becomes
+ * the first completely visible element
+ * <li>if scrolling left, returns the distance to scroll so that the first
+ * visible element becomes the last completely visible element
+ * <li>returns {@code visibleRect.width} if the list is empty
+ * </ul>
+ * <p>
+ * For horizontal scrolling and {@code VERTICAL} orientation,
+ * returns {@code visibleRect.width}.
+ * <p>
+ * Note that the value of {@code visibleRect} must be the equal to
+ * {@code this.getVisibleRect()}.
+ *
+ * @param visibleRect the view area visible within the viewport
+ * @param orientation {@code SwingConstants.HORIZONTAL} or
+ * {@code SwingConstants.VERTICAL}
+ * @param direction less or equal to zero to scroll up/back,
+ * greater than zero for down/forward
+ * @return the "block" increment for scrolling in the specified direction;
+ * always positive
+ * @see #getScrollableUnitIncrement
+ * @see Scrollable#getScrollableBlockIncrement
+ * @throws IllegalArgumentException if {@code visibleRect} is {@code null}, or
+ * {@code orientation} isn't one of {@code SwingConstants.VERTICAL} or
+ * {@code SwingConstants.HORIZONTAL}
+ */
+ public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction) {
+ checkScrollableParameters(visibleRect, orientation);
+ if (orientation == SwingConstants.VERTICAL) {
+ int inc = visibleRect.height;
+ /* Scroll Down */
+ if (direction > 0) {
+ // last cell is the lowest left cell
+ int last = locationToIndex(new Point(visibleRect.x, visibleRect.y+visibleRect.height-1));
+ if (last != -1) {
+ Rectangle lastRect = getCellBounds(last,last);
+ if (lastRect != null) {
+ inc = lastRect.y - visibleRect.y;
+ if ( (inc == 0) && (last < getModel().getSize()-1) ) {
+ inc = lastRect.height;
+ }
+ }
+ }
+ }
+ /* Scroll Up */
+ else {
+ int newFirst = locationToIndex(new Point(visibleRect.x, visibleRect.y-visibleRect.height));
+ int first = getFirstVisibleIndex();
+ if (newFirst != -1) {
+ if (first == -1) {
+ first = locationToIndex(visibleRect.getLocation());
+ }
+ Rectangle newFirstRect = getCellBounds(newFirst,newFirst);
+ Rectangle firstRect = getCellBounds(first,first);
+ if ((newFirstRect != null) && (firstRect!=null)) {
+ while ( (newFirstRect.y + visibleRect.height <
+ firstRect.y + firstRect.height) &&
+ (newFirstRect.y < firstRect.y) ) {
+ newFirst++;
+ newFirstRect = getCellBounds(newFirst,newFirst);
+ }
+ inc = visibleRect.y - newFirstRect.y;
+ if ( (inc <= 0) && (newFirstRect.y > 0)) {
+ newFirst--;
+ newFirstRect = getCellBounds(newFirst,newFirst);
+ if (newFirstRect != null) {
+ inc = visibleRect.y - newFirstRect.y;
+ }
+ }
+ }
+ }
+ }
+ return inc;
+ }
+ else if (orientation == SwingConstants.HORIZONTAL &&
+ getLayoutOrientation() != JList.VERTICAL) {
+ boolean leftToRight = getComponentOrientation().isLeftToRight();
+ int inc = visibleRect.width;
+ /* Scroll Right (in ltr mode) or Scroll Left (in rtl mode) */
+ if (direction > 0) {
+ // position is upper right if ltr, or upper left otherwise
+ int x = visibleRect.x + (leftToRight ? (visibleRect.width - 1) : 0);
+ int last = locationToIndex(new Point(x, visibleRect.y));
+
+ if (last != -1) {
+ Rectangle lastRect = getCellBounds(last,last);
+ if (lastRect != null) {
+ if (leftToRight) {
+ inc = lastRect.x - visibleRect.x;
+ } else {
+ inc = visibleRect.x + visibleRect.width
+ - (lastRect.x + lastRect.width);
+ }
+ if (inc < 0) {
+ inc += lastRect.width;
+ } else if ( (inc == 0) && (last < getModel().getSize()-1) ) {
+ inc = lastRect.width;
+ }
+ }
+ }
+ }
+ /* Scroll Left (in ltr mode) or Scroll Right (in rtl mode) */
+ else {
+ // position is upper left corner of the visibleRect shifted
+ // left by the visibleRect.width if ltr, or upper right shifted
+ // right by the visibleRect.width otherwise
+ int x = visibleRect.x + (leftToRight
+ ? -visibleRect.width
+ : visibleRect.width - 1 + visibleRect.width);
+ int first = locationToIndex(new Point(x, visibleRect.y));
+
+ if (first != -1) {
+ Rectangle firstRect = getCellBounds(first,first);
+ if (firstRect != null) {
+ // the right of the first cell
+ int firstRight = firstRect.x + firstRect.width;
+
+ if (leftToRight) {
+ if ((firstRect.x < visibleRect.x - visibleRect.width)
+ && (firstRight < visibleRect.x)) {
+ inc = visibleRect.x - firstRight;
+ } else {
+ inc = visibleRect.x - firstRect.x;
+ }
+ } else {
+ int visibleRight = visibleRect.x + visibleRect.width;
+
+ if ((firstRight > visibleRight + visibleRect.width)
+ && (firstRect.x > visibleRight)) {
+ inc = firstRect.x - visibleRight;
+ } else {
+ inc = firstRight - visibleRight;
+ }
+ }
+ }
+ }
+ }
+ return inc;
+ }
+ return visibleRect.width;
+ }
+
+
+ /**
+ * Returns {@code true} if this {@code JList} is displayed in a
+ * {@code JViewport} and the viewport is wider than the list's
+ * preferred width, or if the layout orientation is {@code HORIZONTAL_WRAP}
+ * and {@code visibleRowCount <= 0}; otherwise returns {@code false}.
+ * <p>
+ * If {@code false}, then don't track the viewport's width. This allows
+ * horizontal scrolling if the {@code JViewport} is itself embedded in a
+ * {@code JScrollPane}.
+ *
+ * @return whether or not an enclosing viewport should force the list's
+ * width to match its own
+ * @see Scrollable#getScrollableTracksViewportWidth
+ */
+ public boolean getScrollableTracksViewportWidth() {
+ if (getLayoutOrientation() == HORIZONTAL_WRAP &&
+ getVisibleRowCount() <= 0) {
+ return true;
+ }
+ Container parent = SwingUtilities.getUnwrappedParent(this);
+ if (parent instanceof JViewport) {
+ return parent.getWidth() > getPreferredSize().width;
+ }
+ return false;
+ }
+
+ /**
+ * Returns {@code true} if this {@code JList} is displayed in a
+ * {@code JViewport} and the viewport is taller than the list's
+ * preferred height, or if the layout orientation is {@code VERTICAL_WRAP}
+ * and {@code visibleRowCount <= 0}; otherwise returns {@code false}.
+ * <p>
+ * If {@code false}, then don't track the viewport's height. This allows
+ * vertical scrolling if the {@code JViewport} is itself embedded in a
+ * {@code JScrollPane}.
+ *
+ * @return whether or not an enclosing viewport should force the list's
+ * height to match its own
+ * @see Scrollable#getScrollableTracksViewportHeight
+ */
+ public boolean getScrollableTracksViewportHeight() {
+ if (getLayoutOrientation() == VERTICAL_WRAP &&
+ getVisibleRowCount() <= 0) {
+ return true;
+ }
+ Container parent = SwingUtilities.getUnwrappedParent(this);
+ if (parent instanceof JViewport) {
+ return parent.getHeight() > getPreferredSize().height;
+ }
+ return false;
+ }
+
+
+ /*
+ * See {@code readObject} and {@code writeObject} in {@code JComponent}
+ * for more information about serialization in Swing.
+ */
+ private void writeObject(ObjectOutputStream s) throws IOException {
+ s.defaultWriteObject();
+ if (getUIClassID().equals(uiClassID)) {
+ byte count = JComponent.getWriteObjCounter(this);
+ JComponent.setWriteObjCounter(this, --count);
+ if (count == 0 && ui != null) {
+ ui.installUI(this);
+ }
+ }
+ }
+
+
+ /**
+ * Returns a {@code String} representation of this {@code JList}.
+ * This method is intended to be used only for debugging purposes,
+ * and the content and format of the returned {@code String} may vary
+ * between implementations. The returned {@code String} may be empty,
+ * but may not be {@code null}.
+ *
+ * @return a {@code String} representation of this {@code JList}.
+ */
+ protected String paramString() {
+ String selectionForegroundString = (selectionForeground != null ?
+ selectionForeground.toString() :
+ "");
+ String selectionBackgroundString = (selectionBackground != null ?
+ selectionBackground.toString() :
+ "");
+
+ return super.paramString() +
+ ",fixedCellHeight=" + fixedCellHeight +
+ ",fixedCellWidth=" + fixedCellWidth +
+ ",horizontalScrollIncrement=" + horizontalScrollIncrement +
+ ",selectionBackground=" + selectionBackgroundString +
+ ",selectionForeground=" + selectionForegroundString +
+ ",visibleRowCount=" + visibleRowCount +
+ ",layoutOrientation=" + layoutOrientation;
+ }
+
+
+ /**
+ * --- Accessibility Support ---
+ */
+
+ /**
+ * Gets the {@code AccessibleContext} associated with this {@code JList}.
+ * For {@code JList}, the {@code AccessibleContext} takes the form of an
+ * {@code AccessibleJList}.
+ * <p>
+ * A new {@code AccessibleJList} instance is created if necessary.
+ *
+ * @return an {@code AccessibleJList} that serves as the
+ * {@code AccessibleContext} of this {@code JList}
+ */
+ public AccessibleContext getAccessibleContext() {
+ if (accessibleContext == null) {
+ accessibleContext = new AccessibleJList();
+ }
+ return accessibleContext;
+ }
+
+ /**
+ * This class implements accessibility support for the
+ * {@code JList} class. It provides an implementation of the
+ * Java Accessibility API appropriate to list user-interface
+ * elements.
+ * <p>
+ * <strong>Warning:</strong>
+ * Serialized objects of this class will not be compatible with
+ * future Swing releases. The current serialization support is
+ * appropriate for short term storage or RMI between applications running
+ * the same version of Swing. As of 1.4, support for long term storage
+ * of all JavaBeans™
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ */
+ @SuppressWarnings("serial") // Same-version serialization only
+ protected class AccessibleJList extends AccessibleJComponent
+ implements AccessibleSelection, PropertyChangeListener,
+ ListSelectionListener, ListDataListener {
+
+ int leadSelectionIndex;
+
+ public AccessibleJList() {
+ super();
+ JList.this.addPropertyChangeListener(this);
+ JList.this.getSelectionModel().addListSelectionListener(this);
+ JList.this.getModel().addListDataListener(this);
+ leadSelectionIndex = JList.this.getLeadSelectionIndex();
+ }
+
+ /**
+ * Property Change Listener change method. Used to track changes
+ * to the DataModel and ListSelectionModel, in order to re-set
+ * listeners to those for reporting changes there via the Accessibility
+ * PropertyChange mechanism.
+ *
+ * @param e PropertyChangeEvent
+ */
+ public void propertyChange(PropertyChangeEvent e) {
+ String name = e.getPropertyName();
+ Object oldValue = e.getOldValue();
+ Object newValue = e.getNewValue();
+
+ // re-set listData listeners
+ if (name.compareTo("model") == 0) {
+
+ if (oldValue != null && oldValue instanceof ListModel) {
+ ((ListModel) oldValue).removeListDataListener(this);
+ }
+ if (newValue != null && newValue instanceof ListModel) {
+ ((ListModel) newValue).addListDataListener(this);
+ }
+
+ // re-set listSelectionModel listeners
+ } else if (name.compareTo("selectionModel") == 0) {
+
+ if (oldValue != null && oldValue instanceof ListSelectionModel) {
+ ((ListSelectionModel) oldValue).removeListSelectionListener(this);
+ }
+ if (newValue != null && newValue instanceof ListSelectionModel) {
+ ((ListSelectionModel) newValue).addListSelectionListener(this);
+ }
+
+ firePropertyChange(
+ AccessibleContext.ACCESSIBLE_SELECTION_PROPERTY,
+ Boolean.valueOf(false), Boolean.valueOf(true));
+ }
+ }
+
+ /**
+ * List Selection Listener value change method. Used to fire
+ * the property change
+ *
+ * @param e ListSelectionEvent
+ *
+ */
+ public void valueChanged(ListSelectionEvent e) {
+ int oldLeadSelectionIndex = leadSelectionIndex;
+ leadSelectionIndex = JList.this.getLeadSelectionIndex();
+ if (oldLeadSelectionIndex != leadSelectionIndex) {
+ Accessible oldLS, newLS;
+ oldLS = (oldLeadSelectionIndex >= 0)
+ ? getAccessibleChild(oldLeadSelectionIndex)
+ : null;
+ newLS = (leadSelectionIndex >= 0)
+ ? getAccessibleChild(leadSelectionIndex)
+ : null;
+ firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY,
+ oldLS, newLS);
+ }
+
+ firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
+ Boolean.valueOf(false), Boolean.valueOf(true));
+ firePropertyChange(AccessibleContext.ACCESSIBLE_SELECTION_PROPERTY,
+ Boolean.valueOf(false), Boolean.valueOf(true));
+
+ // Process the State changes for Multiselectable
+ AccessibleStateSet s = getAccessibleStateSet();
+ ListSelectionModel lsm = JList.this.getSelectionModel();
+ if (lsm.getSelectionMode() != ListSelectionModel.SINGLE_SELECTION) {
+ if (!s.contains(AccessibleState.MULTISELECTABLE)) {
+ s.add(AccessibleState.MULTISELECTABLE);
+ firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
+ null, AccessibleState.MULTISELECTABLE);
+ }
+ } else {
+ if (s.contains(AccessibleState.MULTISELECTABLE)) {
+ s.remove(AccessibleState.MULTISELECTABLE);
+ firePropertyChange(AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
+ AccessibleState.MULTISELECTABLE, null);
+ }
+ }
+ }
+
+ /**
+ * List Data Listener interval added method. Used to fire the visible data property change
+ *
+ * @param e ListDataEvent
+ *
+ */
+ public void intervalAdded(ListDataEvent e) {
+ firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
+ Boolean.valueOf(false), Boolean.valueOf(true));
+ }
+
+ /**
+ * List Data Listener interval removed method. Used to fire the visible data property change
+ *
+ * @param e ListDataEvent
+ *
+ */
+ public void intervalRemoved(ListDataEvent e) {
+ firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
+ Boolean.valueOf(false), Boolean.valueOf(true));
+ }
+
+ /**
+ * List Data Listener contents changed method. Used to fire the visible data property change
+ *
+ * @param e ListDataEvent
+ *
+ */
+ public void contentsChanged(ListDataEvent e) {
+ firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
+ Boolean.valueOf(false), Boolean.valueOf(true));
+ }
+
+ // AccessibleContext methods
+
+ /**
+ * Get the state set of this object.
+ *
+ * @return an instance of AccessibleState containing the current state
+ * of the object
+ * @see AccessibleState
+ */
+ public AccessibleStateSet getAccessibleStateSet() {
+ AccessibleStateSet states = super.getAccessibleStateSet();
+ if (selectionModel.getSelectionMode() !=
+ ListSelectionModel.SINGLE_SELECTION) {
+ states.add(AccessibleState.MULTISELECTABLE);
+ }
+ return states;
+ }
+
+ /**
+ * Get the role of this object.
+ *
+ * @return an instance of AccessibleRole describing the role of the
+ * object
+ * @see AccessibleRole
+ */
+ public AccessibleRole getAccessibleRole() {
+ return AccessibleRole.LIST;
+ }
+
+ /**
+ * Returns the <code>Accessible</code> child contained at
+ * the local coordinate <code>Point</code>, if one exists.
+ * Otherwise returns <code>null</code>.
+ *
+ * @return the <code>Accessible</code> at the specified
+ * location, if it exists
+ */
+ public Accessible getAccessibleAt(Point p) {
+ int i = locationToIndex(p);
+ if (i >= 0) {
+ return new AccessibleJListChild(JList.this, i);
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Returns the number of accessible children in the object. If all
+ * of the children of this object implement Accessible, than this
+ * method should return the number of children of this object.
+ *
+ * @return the number of accessible children in the object.
+ */
+ public int getAccessibleChildrenCount() {
+ return getModel().getSize();
+ }
+
+ /**
+ * Return the nth Accessible child of the object.
+ *
+ * @param i zero-based index of child
+ * @return the nth Accessible child of the object
+ */
+ public Accessible getAccessibleChild(int i) {
+ if (i >= getModel().getSize()) {
+ return null;
+ } else {
+ return new AccessibleJListChild(JList.this, i);
+ }
+ }
+
+ /**
+ * Get the AccessibleSelection associated with this object. In the
+ * implementation of the Java Accessibility API for this class,
+ * return this object, which is responsible for implementing the
+ * AccessibleSelection interface on behalf of itself.
+ *
+ * @return this object
+ */
+ public AccessibleSelection getAccessibleSelection() {
+ return this;
+ }
+
+
+ // AccessibleSelection methods
+
+ /**
+ * Returns the number of items currently selected.
+ * If no items are selected, the return value will be 0.
+ *
+ * @return the number of items currently selected.
+ */
+ public int getAccessibleSelectionCount() {
+ return JList.this.getSelectedIndices().length;
+ }
+
+ /**
+ * Returns an Accessible representing the specified selected item
+ * in the object. If there isn't a selection, or there are
+ * fewer items selected than the integer passed in, the return
+ * value will be <code>null</code>.
+ *
+ * @param i the zero-based index of selected items
+ * @return an Accessible containing the selected item
+ */
+ public Accessible getAccessibleSelection(int i) {
+ int len = getAccessibleSelectionCount();
+ if (i < 0 || i >= len) {
+ return null;
+ } else {
+ return getAccessibleChild(JList.this.getSelectedIndices()[i]);
+ }
+ }
+
+ /**
+ * Returns true if the current child of this object is selected.
+ *
+ * @param i the zero-based index of the child in this Accessible
+ * object.
+ * @see AccessibleContext#getAccessibleChild
+ */
+ public boolean isAccessibleChildSelected(int i) {
+ return isSelectedIndex(i);
+ }
+
+ /**
+ * Adds the specified selected item in the object to the object's
+ * selection. If the object supports multiple selections,
+ * the specified item is added to any existing selection, otherwise
+ * it replaces any existing selection in the object. If the
+ * specified item is already selected, this method has no effect.
+ *
+ * @param i the zero-based index of selectable items
+ */
+ public void addAccessibleSelection(int i) {
+ JList.this.addSelectionInterval(i, i);
+ }
+
+ /**
+ * Removes the specified selected item in the object from the object's
+ * selection. If the specified item isn't currently selected, this
+ * method has no effect.
+ *
+ * @param i the zero-based index of selectable items
+ */
+ public void removeAccessibleSelection(int i) {
+ JList.this.removeSelectionInterval(i, i);
+ }
+
+ /**
+ * Clears the selection in the object, so that nothing in the
+ * object is selected.
+ */
+ public void clearAccessibleSelection() {
+ JList.this.clearSelection();
+ }
+
+ /**
+ * Causes every selected item in the object to be selected
+ * if the object supports multiple selections.
+ */
+ public void selectAllAccessibleSelection() {
+ JList.this.addSelectionInterval(0, getAccessibleChildrenCount() -1);
+ }
+
+ /**
+ * This class implements accessibility support appropriate
+ * for list children.
+ */
+ protected class AccessibleJListChild extends AccessibleContext
+ implements Accessible, AccessibleComponent {
+ private JList<E> parent = null;
+ private int indexInParent;
+ private Component component = null;
+ private AccessibleContext accessibleContext = null;
+ private ListModel<E> listModel;
+ private ListCellRenderer<? super E> cellRenderer = null;
+
+ public AccessibleJListChild(JList<E> parent, int indexInParent) {
+ this.parent = parent;
+ this.setAccessibleParent(parent);
+ this.indexInParent = indexInParent;
+ if (parent != null) {
+ listModel = parent.getModel();
+ cellRenderer = parent.getCellRenderer();
+ }
+ }
+
+ private Component getCurrentComponent() {
+ return getComponentAtIndex(indexInParent);
+ }
+
+ private AccessibleContext getCurrentAccessibleContext() {
+ Component c = getComponentAtIndex(indexInParent);
+ if (c instanceof Accessible) {
+ return c.getAccessibleContext();
+ } else {
+ return null;
+ }
+ }
+
+ private Component getComponentAtIndex(int index) {
+ if (index < 0 || index >= listModel.getSize()) {
+ return null;
+ }
+ if ((parent != null)
+ && (listModel != null)
+ && cellRenderer != null) {
+ E value = listModel.getElementAt(index);
+ boolean isSelected = parent.isSelectedIndex(index);
+ boolean isFocussed = parent.isFocusOwner()
+ && (index == parent.getLeadSelectionIndex());
+ return cellRenderer.getListCellRendererComponent(
+ parent,
+ value,
+ index,
+ isSelected,
+ isFocussed);
+ } else {
+ return null;
+ }
+ }
+
+
+ // Accessible Methods
+ /**
+ * Get the AccessibleContext for this object. In the
+ * implementation of the Java Accessibility API for this class,
+ * returns this object, which is its own AccessibleContext.
+ *
+ * @return this object
+ */
+ public AccessibleContext getAccessibleContext() {
+ return this;
+ }
+
+
+ // AccessibleContext methods
+
+ public String getAccessibleName() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ return ac.getAccessibleName();
+ } else {
+ return null;
+ }
+ }
+
+ public void setAccessibleName(String s) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ ac.setAccessibleName(s);
+ }
+ }
+
+ public String getAccessibleDescription() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ return ac.getAccessibleDescription();
+ } else {
+ return null;
+ }
+ }
+
+ public void setAccessibleDescription(String s) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ ac.setAccessibleDescription(s);
+ }
+ }
+
+ public AccessibleRole getAccessibleRole() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ return ac.getAccessibleRole();
+ } else {
+ return null;
+ }
+ }
+
+ public AccessibleStateSet getAccessibleStateSet() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ AccessibleStateSet s;
+ if (ac != null) {
+ s = ac.getAccessibleStateSet();
+ } else {
+ s = new AccessibleStateSet();
+ }
+
+ s.add(AccessibleState.SELECTABLE);
+ if (parent.isFocusOwner()
+ && (indexInParent == parent.getLeadSelectionIndex())) {
+ s.add(AccessibleState.ACTIVE);
+ }
+ if (parent.isSelectedIndex(indexInParent)) {
+ s.add(AccessibleState.SELECTED);
+ }
+ if (this.isShowing()) {
+ s.add(AccessibleState.SHOWING);
+ } else if (s.contains(AccessibleState.SHOWING)) {
+ s.remove(AccessibleState.SHOWING);
+ }
+ if (this.isVisible()) {
+ s.add(AccessibleState.VISIBLE);
+ } else if (s.contains(AccessibleState.VISIBLE)) {
+ s.remove(AccessibleState.VISIBLE);
+ }
+ s.add(AccessibleState.TRANSIENT); // cell-rendered
+ return s;
+ }
+
+ public int getAccessibleIndexInParent() {
+ return indexInParent;
+ }
+
+ public int getAccessibleChildrenCount() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ return ac.getAccessibleChildrenCount();
+ } else {
+ return 0;
+ }
+ }
+
+ public Accessible getAccessibleChild(int i) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ Accessible accessibleChild = ac.getAccessibleChild(i);
+ ac.setAccessibleParent(this);
+ return accessibleChild;
+ } else {
+ return null;
+ }
+ }
+
+ public Locale getLocale() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ return ac.getLocale();
+ } else {
+ return null;
+ }
+ }
+
+ public void addPropertyChangeListener(PropertyChangeListener l) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ ac.addPropertyChangeListener(l);
+ }
+ }
+
+ public void removePropertyChangeListener(PropertyChangeListener l) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ ac.removePropertyChangeListener(l);
+ }
+ }
+
+ public AccessibleAction getAccessibleAction() {
+ return getCurrentAccessibleContext().getAccessibleAction();
+ }
+
+ /**
+ * Get the AccessibleComponent associated with this object. In the
+ * implementation of the Java Accessibility API for this class,
+ * return this object, which is responsible for implementing the
+ * AccessibleComponent interface on behalf of itself.
+ *
+ * @return this object
+ */
+ public AccessibleComponent getAccessibleComponent() {
+ return this; // to override getBounds()
+ }
+
+ public AccessibleSelection getAccessibleSelection() {
+ return getCurrentAccessibleContext().getAccessibleSelection();
+ }
+
+ public AccessibleText getAccessibleText() {
+ return getCurrentAccessibleContext().getAccessibleText();
+ }
+
+ public AccessibleValue getAccessibleValue() {
+ return getCurrentAccessibleContext().getAccessibleValue();
+ }
+
+
+ // AccessibleComponent methods
+
+ public Color getBackground() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).getBackground();
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ return c.getBackground();
+ } else {
+ return null;
+ }
+ }
+ }
+
+ public void setBackground(Color c) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).setBackground(c);
+ } else {
+ Component cp = getCurrentComponent();
+ if (cp != null) {
+ cp.setBackground(c);
+ }
+ }
+ }
+
+ public Color getForeground() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).getForeground();
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ return c.getForeground();
+ } else {
+ return null;
+ }
+ }
+ }
+
+ public void setForeground(Color c) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).setForeground(c);
+ } else {
+ Component cp = getCurrentComponent();
+ if (cp != null) {
+ cp.setForeground(c);
+ }
+ }
+ }
+
+ public Cursor getCursor() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).getCursor();
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ return c.getCursor();
+ } else {
+ Accessible ap = getAccessibleParent();
+ if (ap instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ap).getCursor();
+ } else {
+ return null;
+ }
+ }
+ }
+ }
+
+ public void setCursor(Cursor c) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).setCursor(c);
+ } else {
+ Component cp = getCurrentComponent();
+ if (cp != null) {
+ cp.setCursor(c);
+ }
+ }
+ }
+
+ public Font getFont() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).getFont();
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ return c.getFont();
+ } else {
+ return null;
+ }
+ }
+ }
+
+ public void setFont(Font f) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).setFont(f);
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ c.setFont(f);
+ }
+ }
+ }
+
+ public FontMetrics getFontMetrics(Font f) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).getFontMetrics(f);
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ return c.getFontMetrics(f);
+ } else {
+ return null;
+ }
+ }
+ }
+
+ public boolean isEnabled() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).isEnabled();
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ return c.isEnabled();
+ } else {
+ return false;
+ }
+ }
+ }
+
+ public void setEnabled(boolean b) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).setEnabled(b);
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ c.setEnabled(b);
+ }
+ }
+ }
+
+ public boolean isVisible() {
+ int fi = parent.getFirstVisibleIndex();
+ int li = parent.getLastVisibleIndex();
+ // The UI incorrectly returns a -1 for the last
+ // visible index if the list is smaller than the
+ // viewport size.
+ if (li == -1) {
+ li = parent.getModel().getSize() - 1;
+ }
+ return ((indexInParent >= fi)
+ && (indexInParent <= li));
+ }
+
+ public void setVisible(boolean b) {
+ }
+
+ public boolean isShowing() {
+ return (parent.isShowing() && isVisible());
+ }
+
+ public boolean contains(Point p) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ Rectangle r = ((AccessibleComponent) ac).getBounds();
+ return r.contains(p);
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ Rectangle r = c.getBounds();
+ return r.contains(p);
+ } else {
+ return getBounds().contains(p);
+ }
+ }
+ }
+
+ public Point getLocationOnScreen() {
+ if (parent != null) {
+ Point listLocation = parent.getLocationOnScreen();
+ Point componentLocation = parent.indexToLocation(indexInParent);
+ if (componentLocation != null) {
+ componentLocation.translate(listLocation.x, listLocation.y);
+ return componentLocation;
+ } else {
+ return null;
+ }
+ } else {
+ return null;
+ }
+ }
+
+ public Point getLocation() {
+ if (parent != null) {
+ return parent.indexToLocation(indexInParent);
+ } else {
+ return null;
+ }
+ }
+
+ public void setLocation(Point p) {
+ if ((parent != null) && (parent.contains(p))) {
+ ensureIndexIsVisible(indexInParent);
+ }
+ }
+
+ public Rectangle getBounds() {
+ if (parent != null) {
+ return parent.getCellBounds(indexInParent,indexInParent);
+ } else {
+ return null;
+ }
+ }
+
+ public void setBounds(Rectangle r) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).setBounds(r);
+ }
+ }
+
+ public Dimension getSize() {
+ Rectangle cellBounds = this.getBounds();
+ if (cellBounds != null) {
+ return cellBounds.getSize();
+ } else {
+ return null;
+ }
+ }
+
+ public void setSize (Dimension d) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).setSize(d);
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ c.setSize(d);
+ }
+ }
+ }
+
+ public Accessible getAccessibleAt(Point p) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).getAccessibleAt(p);
+ } else {
+ return null;
+ }
+ }
+
+ public boolean isFocusTraversable() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ return ((AccessibleComponent) ac).isFocusTraversable();
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ return c.isFocusTraversable();
+ } else {
+ return false;
+ }
+ }
+ }
+
+ public void requestFocus() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).requestFocus();
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ c.requestFocus();
+ }
+ }
+ }
+
+ public void addFocusListener(FocusListener l) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).addFocusListener(l);
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ c.addFocusListener(l);
+ }
+ }
+ }
+
+ public void removeFocusListener(FocusListener l) {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac instanceof AccessibleComponent) {
+ ((AccessibleComponent) ac).removeFocusListener(l);
+ } else {
+ Component c = getCurrentComponent();
+ if (c != null) {
+ c.removeFocusListener(l);
+ }
+ }
+ }
+
+ // TIGER - 4733624
+ /**
+ * Returns the icon for the element renderer, as the only item
+ * of an array of <code>AccessibleIcon</code>s or a <code>null</code> array
+ * if the renderer component contains no icons.
+ *
+ * @return an array containing the accessible icon
+ * or a <code>null</code> array if none
+ * @since 1.3
+ */
+ public AccessibleIcon [] getAccessibleIcon() {
+ AccessibleContext ac = getCurrentAccessibleContext();
+ if (ac != null) {
+ return ac.getAccessibleIcon();
+ } else {
+ return null;
+ }
+ }
+ } // inner class AccessibleJListChild
+ } // inner class AccessibleJList
+}