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authortromey <tromey@138bc75d-0d04-0410-961f-82ee72b054a4>2005-07-16 00:30:23 +0000
committertromey <tromey@138bc75d-0d04-0410-961f-82ee72b054a4>2005-07-16 00:30:23 +0000
commitc8875fb97fc03779a5bba09872227b1d08e5d52a (patch)
treea0b991cf5866ae1d616639b906ac001811d74508 /libjava/classpath/java/awt/List.java
parentc40c1730800ed292b6db39a83d592476fa59623c (diff)
downloadppe42-gcc-c8875fb97fc03779a5bba09872227b1d08e5d52a.tar.gz
ppe42-gcc-c8875fb97fc03779a5bba09872227b1d08e5d52a.zip
Initial revision
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102074 138bc75d-0d04-0410-961f-82ee72b054a4
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+/* List.java -- A listbox widget
+ Copyright (C) 1999, 2002, 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.awt;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.ItemEvent;
+import java.awt.event.ItemListener;
+import java.awt.peer.ListPeer;
+import java.util.EventListener;
+import java.util.Vector;
+
+import javax.accessibility.Accessible;
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRole;
+import javax.accessibility.AccessibleSelection;
+import javax.accessibility.AccessibleState;
+import javax.accessibility.AccessibleStateSet;
+
+/**
+ * Class that implements a listbox widget
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public class List extends Component
+ implements ItemSelectable, Accessible
+{
+
+/*
+ * Static Variables
+ */
+
+// Serialization constant
+private static final long serialVersionUID = -3304312411574666869L;
+
+/*************************************************************************/
+
+/*
+ * Instance Variables
+ */
+
+// FIXME: Need read/writeObject
+
+/**
+ * @serial The items in the list.
+ */
+private Vector items = new Vector();
+
+/**
+ * @serial Indicates whether or not multiple items can be selected
+ * simultaneously.
+ */
+private boolean multipleMode;
+
+/**
+ * @serial The number of rows in the list. This is set on creation
+ * only and cannot be modified.
+ */
+private int rows;
+
+/**
+ * @serial An array of the item indices that are selected.
+ */
+private int[] selected;
+
+/**
+ * @serial An index value used by <code>makeVisible()</code> and
+ * <code>getVisibleIndex</code>.
+ */
+private int visibleIndex;
+
+// The list of ItemListeners for this object.
+private ItemListener item_listeners;
+
+// The list of ActionListeners for this object.
+private ActionListener action_listeners;
+
+
+/*************************************************************************/
+
+/*
+ * Constructors
+ */
+
+/**
+ * Initializes a new instance of <code>List</code> with no visible lines
+ * and multi-select disabled.
+ *
+ * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true.
+ */
+public
+List()
+{
+ this(4, false);
+}
+
+/*************************************************************************/
+
+/**
+ * Initializes a new instance of <code>List</code> with the specified
+ * number of visible lines and multi-select disabled.
+ *
+ * @param rows The number of visible rows in the list.
+ *
+ * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true.
+ */
+public
+List(int rows)
+{
+ this(rows, false);
+}
+
+/*************************************************************************/
+
+/**
+ * Initializes a new instance of <code>List</code> with the specified
+ * number of lines and the specified multi-select setting.
+ *
+ * @param rows The number of visible rows in the list.
+ * @param multipleMode <code>true</code> if multiple lines can be selected
+ * simultaneously, <code>false</code> otherwise.
+ *
+ * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true.
+ */
+public
+List(int rows, boolean multipleMode)
+{
+ this.rows = rows;
+ this.multipleMode = multipleMode;
+
+ if (GraphicsEnvironment.isHeadless())
+ throw new HeadlessException ();
+}
+
+/*************************************************************************/
+
+/*
+ * Instance Variables
+ */
+
+/**
+ * Returns the number of items in this list.
+ *
+ * @return The number of items in this list.
+ */
+public int
+getItemCount()
+{
+ return countItems ();
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the number of items in this list.
+ *
+ * @return The number of items in this list.
+ *
+ * @deprecated This method is deprecated in favor of
+ * <code>getItemCount()</code>
+ */
+public int
+countItems()
+{
+ return items.size ();
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the complete list of items.
+ *
+ * @return The complete list of items in the list.
+ */
+public synchronized String[]
+getItems()
+{
+ String[] l_items = new String[getItemCount()];
+
+ items.copyInto(l_items);
+ return(l_items);
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the item at the specified index.
+ *
+ * @param index The index of the item to retrieve.
+ *
+ * @exception IndexOutOfBoundsException If the index value is not valid.
+ */
+public String
+getItem(int index)
+{
+ return((String)items.elementAt(index));
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the number of visible rows in the list.
+ *
+ * @return The number of visible rows in the list.
+ */
+public int
+getRows()
+{
+ return(rows);
+}
+
+/*************************************************************************/
+
+/**
+ * Tests whether or not multi-select mode is enabled.
+ *
+ * @return <code>true</code> if multi-select mode is enabled,
+ * <code>false</code> otherwise.
+ */
+public boolean
+isMultipleMode()
+{
+ return allowsMultipleSelections ();
+}
+
+/*************************************************************************/
+
+/**
+ * Tests whether or not multi-select mode is enabled.
+ *
+ * @return <code>true</code> if multi-select mode is enabled,
+ * <code>false</code> otherwise.
+ *
+ * @deprecated This method is deprecated in favor of
+ * <code>isMultipleMode()</code>.
+ */
+public boolean
+allowsMultipleSelections()
+{
+ return multipleMode;
+}
+
+/*************************************************************************/
+
+/**
+ * This method enables or disables multiple selection mode for this
+ * list.
+ *
+ * @param multipleMode <code>true</code> to enable multiple mode,
+ * <code>false</code> otherwise.
+ */
+public void
+setMultipleMode(boolean multipleMode)
+{
+ setMultipleSelections (multipleMode);
+}
+
+/*************************************************************************/
+
+/**
+ * This method enables or disables multiple selection mode for this
+ * list.
+ *
+ * @param multipleMode <code>true</code> to enable multiple mode,
+ * <code>false</code> otherwise.
+ *
+ * @deprecated
+ */
+public void
+setMultipleSelections(boolean multipleMode)
+{
+ this.multipleMode = multipleMode;
+
+ ListPeer peer = (ListPeer) getPeer ();
+ if (peer != null)
+ peer.setMultipleMode (multipleMode);
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the minimum size of this component.
+ *
+ * @return The minimum size of this component.
+ */
+public Dimension
+getMinimumSize()
+{
+ return getMinimumSize (getRows ());
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the minimum size of this component.
+ *
+ * @return The minimum size of this component.
+ *
+ * @deprecated This method is deprecated in favor of
+ * <code>getMinimumSize</code>.
+ */
+public Dimension
+minimumSize()
+{
+ return minimumSize (getRows ());
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the minimum size of this component assuming it had the specified
+ * number of rows.
+ *
+ * @param rows The number of rows to size for.
+ *
+ * @return The minimum size of this component.
+ */
+public Dimension
+getMinimumSize(int rows)
+{
+ return minimumSize (rows);
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the minimum size of this component assuming it had the specified
+ * number of rows.
+ *
+ * @param rows The number of rows to size for.
+ *
+ * @return The minimum size of this component.
+ *
+ * @deprecated This method is deprecated in favor of
+ * <code>getMinimumSize(int)</code>>
+ */
+public Dimension
+minimumSize(int rows)
+{
+ ListPeer peer = (ListPeer) getPeer ();
+ if (peer != null)
+ return peer.minimumSize (rows);
+ else
+ return new Dimension (0, 0);
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the preferred size of this component.
+ *
+ * @return The preferred size of this component.
+ */
+public Dimension
+getPreferredSize()
+{
+ return getPreferredSize (getRows ());
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the preferred size of this component.
+ *
+ * @return The preferred size of this component.
+ *
+ * @deprecated This method is deprecated in favor of
+ * <code>getPreferredSize</code>.
+ */
+public Dimension
+preferredSize()
+{
+ return preferredSize (getRows ());
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the preferred size of this component assuming it had the specified
+ * number of rows.
+ *
+ * @param rows The number of rows to size for.
+ *
+ * @return The preferred size of this component.
+ */
+public Dimension
+getPreferredSize(int rows)
+{
+ return preferredSize (rows);
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the preferred size of this component assuming it had the specified
+ * number of rows.
+ *
+ * @param rows The number of rows to size for.
+ *
+ * @return The preferred size of this component.
+ *
+ * @deprecated This method is deprecated in favor of
+ * <code>getPreferredSize(int)</code>>
+ */
+public Dimension
+preferredSize(int rows)
+{
+ ListPeer peer = (ListPeer) getPeer ();
+ if (peer != null)
+ return peer.preferredSize (rows);
+ else
+ return new Dimension (0, 0);
+}
+
+/*************************************************************************/
+
+/**
+ * This method adds the specified item to the end of the list.
+ *
+ * @param item The item to add to the list.
+ */
+public void
+add(String item)
+{
+ add (item, -1);
+}
+
+/*************************************************************************/
+
+/**
+ * This method adds the specified item to the end of the list.
+ *
+ * @param item The item to add to the list.
+ *
+ * @deprecated Use add() instead.
+ */
+public void
+addItem(String item)
+{
+ addItem (item, -1);
+}
+
+/*************************************************************************/
+
+/**
+ * Adds the specified item to the specified location in the list.
+ * If the desired index is -1 or greater than the number of rows
+ * in the list, then the item is added to the end.
+ *
+ * @param item The item to add to the list.
+ * @param index The location in the list to add the item, or -1 to add
+ * to the end.
+ */
+public void
+add(String item, int index)
+{
+ addItem (item, index);
+}
+
+/*************************************************************************/
+
+/**
+ * Adds the specified item to the specified location in the list.
+ * If the desired index is -1 or greater than the number of rows
+ * in the list, then the item is added to the end.
+ *
+ * @param item The item to add to the list.
+ * @param index The location in the list to add the item, or -1 to add
+ * to the end.
+ *
+ * @deprecated Use add() instead.
+ */
+public void
+addItem(String item, int index)
+{
+ if ((index == -1) || (index >= items.size ()))
+ items.addElement (item);
+ else
+ items.insertElementAt (item, index);
+
+ ListPeer peer = (ListPeer) getPeer ();
+ if (peer != null)
+ peer.add (item, index);
+}
+
+/*************************************************************************/
+
+/**
+ * Deletes the item at the specified index.
+ *
+ * @param index The index of the item to delete.
+ *
+ * @exception IllegalArgumentException If the index is not valid
+ *
+ * @deprecated
+ */
+public void
+delItem(int index) throws IllegalArgumentException
+{
+ items.removeElementAt (index);
+
+ ListPeer peer = (ListPeer) getPeer ();
+ if (peer != null)
+ peer.delItems (index, index);
+}
+
+/*************************************************************************/
+
+/**
+ * Deletes the item at the specified index.
+ *
+ * @param index The index of the item to delete.
+ *
+ * @exception IllegalArgumentException If the index is not valid
+ */
+public void
+remove(int index) throws IllegalArgumentException
+{
+ delItem (index);
+}
+
+/*************************************************************************/
+
+/**
+ * Deletes all items in the specified index range.
+ *
+ * @param start The beginning index of the range to delete.
+ * @param end The ending index of the range to delete.
+ *
+ * @exception IllegalArgumentException If the indexes are not valid
+ *
+ * @deprecated This method is deprecated for some unknown reason.
+ */
+public synchronized void
+delItems(int start, int end) throws IllegalArgumentException
+{
+ if ((start < 0) || (start >= items.size()))
+ throw new IllegalArgumentException("Bad list start index value: " + start);
+
+ if ((start < 0) || (start >= items.size()))
+ throw new IllegalArgumentException("Bad list start index value: " + start);
+
+ if (start > end)
+ throw new IllegalArgumentException("Start is greater than end!");
+
+ // We must run the loop in reverse direction.
+ for (int i = end; i >= start; --i)
+ items.removeElementAt (i);
+ if (peer != null)
+ {
+ ListPeer l = (ListPeer) peer;
+ l.delItems (start, end);
+ }
+}
+
+/*************************************************************************/
+
+/**
+ * Deletes the first occurrence of the specified item from the list.
+ *
+ * @param item The item to delete.
+ *
+ * @exception IllegalArgumentException If the specified item does not exist.
+ */
+public synchronized void
+remove(String item) throws IllegalArgumentException
+{
+ int index = items.indexOf(item);
+ if (index == -1)
+ throw new IllegalArgumentException("List element to delete not found");
+
+ remove(index);
+}
+
+/*************************************************************************/
+
+/**
+ * Deletes all of the items from the list.
+ */
+public synchronized void
+removeAll()
+{
+ clear ();
+}
+
+/*************************************************************************/
+
+/**
+ * Deletes all of the items from the list.
+ *
+ * @deprecated This method is deprecated in favor of <code>removeAll()</code>.
+ */
+public void
+clear()
+{
+ items.clear();
+
+ ListPeer peer = (ListPeer) getPeer ();
+ if (peer != null)
+ peer.removeAll ();
+}
+
+/*************************************************************************/
+
+/**
+ * Replaces the item at the specified index with the specified item.
+ *
+ * @param item The new item value.
+ * @param index The index of the item to replace.
+ *
+ * @exception IllegalArgumentException If the index is not valid.
+ */
+public synchronized void
+replaceItem(String item, int index) throws IllegalArgumentException
+{
+ if ((index < 0) || (index >= items.size()))
+ throw new IllegalArgumentException("Bad list index: " + index);
+
+ items.insertElementAt(item, index + 1);
+ items.removeElementAt (index);
+
+ if (peer != null)
+ {
+ ListPeer l = (ListPeer) peer;
+
+ /* We add first and then remove so that the selected
+ item remains the same */
+ l.add (item, index + 1);
+ l.delItems (index, index);
+ }
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the index of the currently selected item. -1 will be returned
+ * if there are no selected rows or if there are multiple selected rows.
+ *
+ * @return The index of the selected row.
+ */
+public synchronized int
+getSelectedIndex()
+{
+ if (peer != null)
+ {
+ ListPeer l = (ListPeer) peer;
+ selected = l.getSelectedIndexes ();
+ }
+
+ if (selected == null || selected.length != 1)
+ return -1;
+ return selected[0];
+}
+
+/*************************************************************************/
+
+/**
+ * Returns an array containing the indexes of the rows that are
+ * currently selected.
+ *
+ * @return A list of indexes of selected rows.
+ */
+public synchronized int[]
+getSelectedIndexes()
+{
+ if (peer != null)
+ {
+ ListPeer l = (ListPeer) peer;
+ selected = l.getSelectedIndexes ();
+ }
+ return selected;
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the item that is currently selected, or <code>null</code> if there
+ * is no item selected. FIXME: What happens if multiple items selected?
+ *
+ * @return The selected item, or <code>null</code> if there is no
+ * selected item.
+ */
+public synchronized String
+getSelectedItem()
+{
+ int index = getSelectedIndex();
+ if (index == -1)
+ return(null);
+
+ return((String)items.elementAt(index));
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the list of items that are currently selected in this list.
+ *
+ * @return The list of currently selected items.
+ */
+public synchronized String[]
+getSelectedItems()
+{
+ int[] indexes = getSelectedIndexes();
+ if (indexes == null)
+ return(new String[0]);
+
+ String[] retvals = new String[indexes.length];
+ if (retvals.length > 0)
+ for (int i = 0 ; i < retvals.length; i++)
+ retvals[i] = (String)items.elementAt(indexes[i]);
+
+ return(retvals);
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the list of items that are currently selected in this list as
+ * an array of type <code>Object[]</code> instead of <code>String[]</code>.
+ *
+ * @return The list of currently selected items.
+ */
+public synchronized Object[]
+getSelectedObjects()
+{
+ int[] indexes = getSelectedIndexes();
+ if (indexes == null)
+ return(new Object[0]);
+
+ Object[] retvals = new Object[indexes.length];
+ if (retvals.length > 0)
+ for (int i = 0 ; i < retvals.length; i++)
+ retvals[i] = items.elementAt(indexes[i]);
+
+ return(retvals);
+}
+
+/*************************************************************************/
+
+/**
+ * Tests whether or not the specified index is selected.
+ *
+ * @param index The index to test.
+ *
+ * @return <code>true</code> if the index is selected, <code>false</code>
+ * otherwise.
+ */
+public boolean
+isIndexSelected(int index)
+{
+ return isSelected (index);
+}
+
+/*************************************************************************/
+
+/**
+ * Tests whether or not the specified index is selected.
+ *
+ * @param index The index to test.
+ *
+ * @return <code>true</code> if the index is selected, <code>false</code>
+ * otherwise.
+ *
+ * @deprecated This method is deprecated in favor of
+ * <code>isIndexSelected(int)</code>.
+ */
+public boolean
+isSelected(int index)
+{
+ int[] indexes = getSelectedIndexes ();
+
+ for (int i = 0; i < indexes.length; i++)
+ if (indexes[i] == index)
+ return true;
+
+ return false;
+}
+
+/*************************************************************************/
+
+/**
+ * This method ensures that the item at the specified index is visible.
+ *
+ * @exception IllegalArgumentException If the specified index is out of
+ * range.
+ */
+public synchronized void
+makeVisible(int index) throws IllegalArgumentException
+{
+ if ((index < 0) || (index >= items.size()))
+ throw new IllegalArgumentException("Bad list index: " + index);
+
+ visibleIndex = index;
+ if (peer != null)
+ {
+ ListPeer l = (ListPeer) peer;
+ l.makeVisible (index);
+ }
+}
+
+/*************************************************************************/
+
+/**
+ * Returns the index of the last item that was made visible via the
+ * <code>makeVisible()</code> method.
+ *
+ * @return The index of the last item made visible via the
+ * <code>makeVisible()</code> method.
+ */
+public int
+getVisibleIndex()
+{
+ return(visibleIndex);
+}
+
+/*************************************************************************/
+
+/**
+ * Makes the item at the specified index selected.
+ *
+ * @param index The index of the item to select.
+ */
+public synchronized void
+select(int index)
+{
+ ListPeer lp = (ListPeer)getPeer();
+ if (lp != null)
+ lp.select(index);
+}
+
+/*************************************************************************/
+
+/**
+ * Makes the item at the specified index not selected.
+ *
+ * @param index The index of the item to unselect.
+ */
+public synchronized void
+deselect(int index)
+{
+ ListPeer lp = (ListPeer)getPeer();
+ if (lp != null)
+ lp.deselect(index);
+}
+
+/*************************************************************************/
+
+/**
+ * Notifies this object to create its native peer.
+ */
+public void
+addNotify()
+{
+ if (peer == null)
+ peer = getToolkit ().createList (this);
+ super.addNotify ();
+}
+
+/*************************************************************************/
+
+/**
+ * Notifies this object to destroy its native peer.
+ */
+public void
+removeNotify()
+{
+ super.removeNotify();
+}
+
+/*************************************************************************/
+
+/**
+ * Adds the specified <code>ActionListener</code> to the list of
+ * registered listeners for this object.
+ *
+ * @param listener The listener to add.
+ */
+public synchronized void
+addActionListener(ActionListener listener)
+{
+ action_listeners = AWTEventMulticaster.add(action_listeners, listener);
+}
+
+/*************************************************************************/
+
+/**
+ * Removes the specified <code>ActionListener</code> from the list of
+ * registers listeners for this object.
+ *
+ * @param listener The listener to remove.
+ */
+public synchronized void
+removeActionListener(ActionListener listener)
+{
+ action_listeners = AWTEventMulticaster.remove(action_listeners, listener);
+}
+
+/*************************************************************************/
+
+/**
+ * Adds the specified <code>ItemListener</code> to the list of
+ * registered listeners for this object.
+ *
+ * @param listener The listener to add.
+ */
+public synchronized void
+addItemListener(ItemListener listener)
+{
+ item_listeners = AWTEventMulticaster.add(item_listeners, listener);
+}
+
+/*************************************************************************/
+
+/**
+ * Removes the specified <code>ItemListener</code> from the list of
+ * registers listeners for this object.
+ *
+ * @param listener The listener to remove.
+ */
+public synchronized void
+removeItemListener(ItemListener listener)
+{
+ item_listeners = AWTEventMulticaster.remove(item_listeners, listener);
+}
+
+/*************************************************************************/
+
+/**
+ * Processes the specified event for this object. If the event is an
+ * instance of <code>ActionEvent</code> then the
+ * <code>processActionEvent()</code> method is called. Similarly, if the
+ * even is an instance of <code>ItemEvent</code> then the
+ * <code>processItemEvent()</code> method is called. Otherwise the
+ * superclass method is called to process this event.
+ *
+ * @param event The event to process.
+ */
+protected void
+processEvent(AWTEvent event)
+{
+ if (event instanceof ActionEvent)
+ processActionEvent((ActionEvent)event);
+ else if (event instanceof ItemEvent)
+ processItemEvent((ItemEvent)event);
+ else
+ super.processEvent(event);
+}
+
+/*************************************************************************/
+
+/**
+ * This method processes the specified event by dispatching it to any
+ * registered listeners. Note that this method will only get called if
+ * action events are enabled. This will happen automatically if any
+ * listeners are added, or it can be done "manually" by calling
+ * the <code>enableEvents()</code> method.
+ *
+ * @param event The event to process.
+ */
+protected void
+processActionEvent(ActionEvent event)
+{
+ if (action_listeners != null)
+ action_listeners.actionPerformed(event);
+}
+
+/*************************************************************************/
+
+/**
+ * This method processes the specified event by dispatching it to any
+ * registered listeners. Note that this method will only get called if
+ * item events are enabled. This will happen automatically if any
+ * listeners are added, or it can be done "manually" by calling
+ * the <code>enableEvents()</code> method.
+ *
+ * @param event The event to process.
+ */
+protected void
+processItemEvent(ItemEvent event)
+{
+ if (item_listeners != null)
+ item_listeners.itemStateChanged(event);
+}
+
+void
+dispatchEventImpl(AWTEvent e)
+{
+ if (e.id <= ItemEvent.ITEM_LAST
+ && e.id >= ItemEvent.ITEM_FIRST
+ && (item_listeners != null
+ || (eventMask & AWTEvent.ITEM_EVENT_MASK) != 0))
+ processEvent(e);
+ else if (e.id <= ActionEvent.ACTION_LAST
+ && e.id >= ActionEvent.ACTION_FIRST
+ && (action_listeners != null
+ || (eventMask & AWTEvent.ACTION_EVENT_MASK) != 0))
+ processEvent(e);
+ else
+ super.dispatchEventImpl(e);
+}
+
+/*************************************************************************/
+
+/**
+ * Returns a debugging string for this object.
+ *
+ * @return A debugging string for this object.
+ */
+protected String
+paramString()
+{
+ return "multiple=" + multipleMode + ",rows=" + rows + super.paramString();
+}
+
+ /**
+ * Returns an array of all the objects currently registered as FooListeners
+ * upon this <code>List</code>. FooListeners are registered using the
+ * addFooListener method.
+ *
+ * @exception ClassCastException If listenerType doesn't specify a class or
+ * interface that implements java.util.EventListener.
+ */
+ public EventListener[] getListeners (Class listenerType)
+ {
+ if (listenerType == ActionListener.class)
+ return AWTEventMulticaster.getListeners (action_listeners, listenerType);
+
+ if (listenerType == ItemListener.class)
+ return AWTEventMulticaster.getListeners (item_listeners, listenerType);
+
+ return super.getListeners (listenerType);
+ }
+
+ /**
+ * Returns all action listeners registered to this object.
+ */
+ public ActionListener[] getActionListeners ()
+ {
+ return (ActionListener[]) getListeners (ActionListener.class);
+ }
+
+ /**
+ * Returns all action listeners registered to this object.
+ */
+ public ItemListener[] getItemListeners ()
+ {
+ return (ItemListener[]) getListeners (ItemListener.class);
+ }
+
+ // Accessibility internal class
+ protected class AccessibleAWTList extends AccessibleAWTComponent
+ implements AccessibleSelection, ItemListener, ActionListener
+ {
+ protected class AccessibleAWTListChild extends AccessibleAWTComponent
+ implements Accessible
+ {
+ private int index;
+ private List parent;
+
+ public AccessibleAWTListChild(List parent, int indexInParent)
+ {
+ this.parent = parent;
+ index = indexInParent;
+ if (parent == null)
+ index = -1;
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.Accessible#getAccessibleContext()
+ */
+ public AccessibleContext getAccessibleContext()
+ {
+ return this;
+ }
+
+ public AccessibleRole getAccessibleRole()
+ {
+ return AccessibleRole.LIST_ITEM;
+ }
+
+ public AccessibleStateSet getAccessibleStateSet()
+ {
+ AccessibleStateSet states = super.getAccessibleStateSet();
+ if (parent.isIndexSelected(index))
+ states.add(AccessibleState.SELECTED);
+ return states;
+ }
+
+ public int getAccessibleIndexInParent()
+ {
+ return index;
+ }
+
+ }
+
+ public AccessibleAWTList()
+ {
+ addItemListener(this);
+ addActionListener(this);
+ }
+
+ public AccessibleRole getAccessibleRole()
+ {
+ return AccessibleRole.LIST;
+ }
+
+ public AccessibleStateSet getAccessibleStateSet()
+ {
+ AccessibleStateSet states = super.getAccessibleStateSet();
+ states.add(AccessibleState.SELECTABLE);
+ if (isMultipleMode())
+ states.add(AccessibleState.MULTISELECTABLE);
+ return states;
+ }
+
+ public int getAccessibleChildrenCount()
+ {
+ return getItemCount();
+ }
+
+ public Accessible getAccessibleChild(int i)
+ {
+ if (i >= getItemCount())
+ return null;
+ return new AccessibleAWTListChild(List.this, i);
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#getAccessibleSelectionCount()
+ */
+ public int getAccessibleSelectionCount()
+ {
+ return getSelectedIndexes().length;
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#getAccessibleSelection()
+ */
+ public AccessibleSelection getAccessibleSelection()
+ {
+ return this;
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#getAccessibleSelection(int)
+ */
+ public Accessible getAccessibleSelection(int i)
+ {
+ int[] items = getSelectedIndexes();
+ if (i >= items.length)
+ return null;
+ return new AccessibleAWTListChild(List.this, items[i]);
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#isAccessibleChildSelected(int)
+ */
+ public boolean isAccessibleChildSelected(int i)
+ {
+ return isIndexSelected(i);
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#addAccessibleSelection(int)
+ */
+ public void addAccessibleSelection(int i)
+ {
+ select(i);
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#removeAccessibleSelection(int)
+ */
+ public void removeAccessibleSelection(int i)
+ {
+ deselect(i);
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#clearAccessibleSelection()
+ */
+ public void clearAccessibleSelection()
+ {
+ for (int i = 0; i < getItemCount(); i++)
+ deselect(i);
+ }
+
+ /* (non-Javadoc)
+ * @see javax.accessibility.AccessibleSelection#selectAllAccessibleSelection()
+ */
+ public void selectAllAccessibleSelection()
+ {
+ if (isMultipleMode())
+ for (int i = 0; i < getItemCount(); i++)
+ select(i);
+ }
+
+ /* (non-Javadoc)
+ * @see java.awt.event.ItemListener#itemStateChanged(java.awt.event.ItemEvent)
+ */
+ public void itemStateChanged(ItemEvent event)
+ {
+ }
+
+ /* (non-Javadoc)
+ * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
+ */
+ public void actionPerformed(ActionEvent event)
+ {
+ }
+
+ }
+
+ /**
+ * Gets the AccessibleContext associated with this <code>List</code>.
+ * The context is created, if necessary.
+ *
+ * @return the associated context
+ */
+ public AccessibleContext getAccessibleContext()
+ {
+ /* Create the context if this is the first request */
+ if (accessibleContext == null)
+ accessibleContext = new AccessibleAWTList();
+ return accessibleContext;
+ }
+} // class List
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