1210 lines
34 KiB
Java
1210 lines
34 KiB
Java
/* AWTEventMulticaster.java -- allows multicast chaining of listeners
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Copyright (C) 1999, 2000, 2002 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.AdjustmentEvent;
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import java.awt.event.AdjustmentListener;
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import java.awt.event.ComponentEvent;
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import java.awt.event.ComponentListener;
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import java.awt.event.ContainerEvent;
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import java.awt.event.ContainerListener;
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import java.awt.event.FocusEvent;
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import java.awt.event.FocusListener;
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import java.awt.event.HierarchyBoundsListener;
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import java.awt.event.HierarchyEvent;
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import java.awt.event.HierarchyListener;
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import java.awt.event.InputMethodEvent;
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import java.awt.event.InputMethodListener;
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import java.awt.event.ItemEvent;
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import java.awt.event.ItemListener;
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import java.awt.event.KeyEvent;
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import java.awt.event.KeyListener;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseListener;
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import java.awt.event.MouseMotionListener;
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import java.awt.event.MouseWheelEvent;
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import java.awt.event.MouseWheelListener;
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import java.awt.event.TextEvent;
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import java.awt.event.TextListener;
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import java.awt.event.WindowEvent;
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import java.awt.event.WindowFocusListener;
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import java.awt.event.WindowListener;
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import java.awt.event.WindowStateListener;
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import java.io.IOException;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import java.lang.reflect.Array;
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import java.util.ArrayList;
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import java.util.EventListener;
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/**
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* This class is used to implement a chain of event handlers. Dispatching
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* using this class is thread safe. Here is a quick example of how to
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* add and delete listeners using this class. For this example, we will
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* assume are firing <code>AdjustmentEvent</code>'s. However, this
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* same approach is useful for all events in the <code>java.awt.event</code>
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* package, and more if this class is subclassed.
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*
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* <p><code>
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* AdjustmentListener al;
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* public void addAdjustmentListener(AdjustmentListener listener)
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* {
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* al = AWTEventMulticaster.add(al, listener);
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* }
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* public void removeAdjustmentListener(AdjustmentListener listener)
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* {
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* al = AWTEventMulticaster.remove(al, listener);
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* }
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* </code>
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*
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* <p>When it come time to process an event, simply call <code>al</code>,
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* assuming it is not <code>null</code>, and all listeners in the chain will
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* be fired.
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*
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* <p>The first time <code>add</code> is called it is passed
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* <code>null</code> and <code>listener</code> as its arguments. This
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* starts building the chain. This class returns <code>listener</code>
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* which becomes the new <code>al</code>. The next time, <code>add</code>
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* is called with <code>al</code> and <code>listener</code> and the
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* new listener is then chained to the old.
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*
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* @author Bryce McKinlay
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* @author Aaron M. Renn <arenn@urbanophile.com>
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* @author Eric Blake <ebb9@email.byu.edu>
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* @since 1.1
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* @status updated to 1.4
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*/
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public class AWTEventMulticaster
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implements ComponentListener, ContainerListener, FocusListener, KeyListener,
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MouseListener, MouseMotionListener, WindowListener,
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WindowFocusListener, WindowStateListener, ActionListener,
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ItemListener, AdjustmentListener, TextListener,
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InputMethodListener, HierarchyListener, HierarchyBoundsListener,
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MouseWheelListener
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{
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/**
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* A variable in the event chain.
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*/
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protected final EventListener a;
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/**
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* A variable in the event chain.
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*/
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protected final EventListener b;
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/**
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* Initializes a new instance of <code>AWTEventMulticaster</code> with
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* the specified event listener parameters. The parameters should not be
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* null, although it is not required to enforce this with a
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* NullPointerException.
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*
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* @param a the "a" listener object
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* @param b the "b" listener object
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*/
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protected AWTEventMulticaster(EventListener a, EventListener b)
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{
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this.a = a;
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this.b = b;
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}
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/**
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* Removes one instance of the specified listener from this multicaster
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* chain. This descends recursively if either child is a multicaster, and
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* returns a multicaster chain with the old listener removed.
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*
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* @param oldl the object to remove from this multicaster
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* @return the resulting multicaster with the specified listener removed
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*/
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protected EventListener remove(EventListener oldl)
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{
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// If oldl is an immediate child, return the other child.
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if (a == oldl)
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return b;
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if (b == oldl)
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return a;
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// If a and/or b are Multicaster's, search them recursively.
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if (a instanceof AWTEventMulticaster)
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{
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EventListener newa = ((AWTEventMulticaster) a).remove(oldl);
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if (newa != a)
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return new AWTEventMulticaster(newa, b);
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}
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if (b instanceof AWTEventMulticaster)
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{
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EventListener newb = ((AWTEventMulticaster) b).remove(oldl);
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if (newb != b)
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return new AWTEventMulticaster(a, newb);
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}
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// oldl was not found.
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return this;
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void componentResized(ComponentEvent e)
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{
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((ComponentListener) a).componentResized(e);
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((ComponentListener) b).componentResized(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void componentMoved(ComponentEvent e)
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{
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((ComponentListener) a).componentMoved(e);
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((ComponentListener) b).componentMoved(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void componentShown(ComponentEvent e)
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{
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((ComponentListener) a).componentShown(e);
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((ComponentListener) b).componentShown(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void componentHidden(ComponentEvent e)
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{
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((ComponentListener) a).componentHidden(e);
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((ComponentListener) b).componentHidden(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void componentAdded(ContainerEvent e)
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{
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((ContainerListener) a).componentAdded(e);
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((ContainerListener) b).componentAdded(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void componentRemoved(ContainerEvent e)
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{
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((ContainerListener) a).componentRemoved(e);
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((ContainerListener) b).componentRemoved(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void focusGained(FocusEvent e)
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{
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((FocusListener) a).focusGained(e);
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((FocusListener) b).focusGained(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void focusLost(FocusEvent e)
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{
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((FocusListener) a).focusLost(e);
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((FocusListener) b).focusLost(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void keyTyped(KeyEvent e)
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{
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((KeyListener) a).keyTyped(e);
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((KeyListener) b).keyTyped(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void keyPressed(KeyEvent e)
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{
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((KeyListener) a).keyPressed(e);
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((KeyListener) b).keyPressed(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void keyReleased(KeyEvent e)
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{
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((KeyListener) a).keyReleased(e);
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((KeyListener) b).keyReleased(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void mouseClicked(MouseEvent e)
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{
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((MouseListener) a).mouseClicked(e);
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((MouseListener) b).mouseClicked(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void mousePressed(MouseEvent e)
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{
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((MouseListener) a).mousePressed(e);
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((MouseListener) b).mousePressed(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void mouseReleased(MouseEvent e)
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{
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((MouseListener) a).mouseReleased(e);
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((MouseListener) b).mouseReleased(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void mouseEntered(MouseEvent e)
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{
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((MouseListener) a).mouseEntered(e);
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((MouseListener) b).mouseEntered(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void mouseExited(MouseEvent e)
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{
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((MouseListener) a).mouseExited(e);
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((MouseListener) b).mouseExited(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void mouseDragged(MouseEvent e)
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{
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((MouseMotionListener) a).mouseDragged(e);
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((MouseMotionListener) b).mouseDragged(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void mouseMoved(MouseEvent e)
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{
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((MouseMotionListener) a).mouseMoved(e);
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((MouseMotionListener) b).mouseMoved(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void windowOpened(WindowEvent e)
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{
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((WindowListener) a).windowOpened(e);
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((WindowListener) b).windowOpened(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void windowClosing(WindowEvent e)
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{
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((WindowListener) a).windowClosing(e);
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((WindowListener) b).windowClosing(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void windowClosed(WindowEvent e)
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{
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((WindowListener) a).windowClosed(e);
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((WindowListener) b).windowClosed(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void windowIconified(WindowEvent e)
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{
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((WindowListener) a).windowIconified(e);
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((WindowListener) b).windowIconified(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void windowDeiconified(WindowEvent e)
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{
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((WindowListener) a).windowDeiconified(e);
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((WindowListener) b).windowDeiconified(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void windowActivated(WindowEvent e)
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{
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((WindowListener) a).windowActivated(e);
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((WindowListener) b).windowActivated(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void windowDeactivated(WindowEvent e)
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{
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((WindowListener) a).windowDeactivated(e);
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((WindowListener) b).windowDeactivated(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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* @since 1.4
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*/
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public void windowStateChanged(WindowEvent e)
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{
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((WindowStateListener) a).windowStateChanged(e);
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((WindowStateListener) b).windowStateChanged(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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* @since 1.4
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*/
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public void windowGainedFocus(WindowEvent e)
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{
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((WindowFocusListener) a).windowGainedFocus(e);
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((WindowFocusListener) b).windowGainedFocus(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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* @since 1.4
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*/
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public void windowLostFocus(WindowEvent e)
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{
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((WindowFocusListener) a).windowLostFocus(e);
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((WindowFocusListener) b).windowLostFocus(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void actionPerformed(ActionEvent e)
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{
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((ActionListener) a).actionPerformed(e);
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((ActionListener) b).actionPerformed(e);
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}
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void itemStateChanged(ItemEvent e)
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{
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((ItemListener) a).itemStateChanged(e);
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((ItemListener) b).itemStateChanged(e);
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}
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|
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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*/
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public void adjustmentValueChanged(AdjustmentEvent e)
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{
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((AdjustmentListener) a).adjustmentValueChanged(e);
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((AdjustmentListener) b).adjustmentValueChanged(e);
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}
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|
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/**
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* Handles this event by dispatching it to the "a" and "b" listener
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* instances.
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*
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* @param event the event to handle
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|
*/
|
|
public void textValueChanged(TextEvent e)
|
|
{
|
|
((TextListener) a).textValueChanged(e);
|
|
((TextListener) b).textValueChanged(e);
|
|
}
|
|
|
|
/**
|
|
* Handles this event by dispatching it to the "a" and "b" listener
|
|
* instances.
|
|
*
|
|
* @param event the event to handle
|
|
* @since 1.2
|
|
*/
|
|
public void inputMethodTextChanged(InputMethodEvent e)
|
|
{
|
|
((InputMethodListener) a).inputMethodTextChanged(e);
|
|
((InputMethodListener) b).inputMethodTextChanged(e);
|
|
}
|
|
|
|
/**
|
|
* Handles this event by dispatching it to the "a" and "b" listener
|
|
* instances.
|
|
*
|
|
* @param event the event to handle
|
|
* @since 1.2
|
|
*/
|
|
public void caretPositionChanged(InputMethodEvent e)
|
|
{
|
|
((InputMethodListener) a).caretPositionChanged(e);
|
|
((InputMethodListener) b).caretPositionChanged(e);
|
|
}
|
|
|
|
/**
|
|
* Handles this event by dispatching it to the "a" and "b" listener
|
|
* instances.
|
|
*
|
|
* @param event the event to handle
|
|
* @since 1.3
|
|
*/
|
|
public void hierarchyChanged(HierarchyEvent e)
|
|
{
|
|
((HierarchyListener) a).hierarchyChanged(e);
|
|
((HierarchyListener) b).hierarchyChanged(e);
|
|
}
|
|
|
|
/**
|
|
* Handles this event by dispatching it to the "a" and "b" listener
|
|
* instances.
|
|
*
|
|
* @param event the event to handle
|
|
* @since 1.3
|
|
*/
|
|
public void ancestorMoved(HierarchyEvent e)
|
|
{
|
|
((HierarchyBoundsListener) a).ancestorMoved(e);
|
|
((HierarchyBoundsListener) b).ancestorMoved(e);
|
|
}
|
|
|
|
/**
|
|
* Handles this event by dispatching it to the "a" and "b" listener
|
|
* instances.
|
|
*
|
|
* @param event the event to handle
|
|
* @since 1.3
|
|
*/
|
|
public void ancestorResized(HierarchyEvent e)
|
|
{
|
|
((HierarchyBoundsListener) a).ancestorResized(e);
|
|
((HierarchyBoundsListener) b).ancestorResized(e);
|
|
}
|
|
|
|
/**
|
|
* Handles this event by dispatching it to the "a" and "b" listener
|
|
* instances.
|
|
*
|
|
* @param event the event to handle
|
|
* @since 1.4
|
|
*/
|
|
public void mouseWheelMoved(MouseWheelEvent e)
|
|
{
|
|
((MouseWheelListener) a).mouseWheelMoved(e);
|
|
((MouseWheelListener) b).mouseWheelMoved(e);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>ComponentListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static ComponentListener add(ComponentListener a, ComponentListener b)
|
|
{
|
|
return (ComponentListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>ContainerListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static ContainerListener add(ContainerListener a, ContainerListener b)
|
|
{
|
|
return (ContainerListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>FocusListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static FocusListener add(FocusListener a, FocusListener b)
|
|
{
|
|
return (FocusListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>KeyListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static KeyListener add(KeyListener a, KeyListener b)
|
|
{
|
|
return (KeyListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>MouseListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static MouseListener add(MouseListener a, MouseListener b)
|
|
{
|
|
return (MouseListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>MouseMotionListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static MouseMotionListener add(MouseMotionListener a,
|
|
MouseMotionListener b)
|
|
{
|
|
return (MouseMotionListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>WindowListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static WindowListener add(WindowListener a, WindowListener b)
|
|
{
|
|
return (WindowListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>WindowStateListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
* @since 1.4
|
|
*/
|
|
public static WindowStateListener add(WindowStateListener a,
|
|
WindowStateListener b)
|
|
{
|
|
return (WindowStateListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>WindowFocusListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
* @since 1.4
|
|
*/
|
|
public static WindowFocusListener add(WindowFocusListener a,
|
|
WindowFocusListener b)
|
|
{
|
|
return (WindowFocusListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>ActionListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static ActionListener add(ActionListener a, ActionListener b)
|
|
{
|
|
return (ActionListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>ItemListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static ItemListener add(ItemListener a, ItemListener b)
|
|
{
|
|
return (ItemListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>AdjustmentListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static AdjustmentListener add(AdjustmentListener a,
|
|
AdjustmentListener b)
|
|
{
|
|
return (AdjustmentListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>AdjustmentListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
public static TextListener add(TextListener a, TextListener b)
|
|
{
|
|
return (TextListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>InputMethodListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
* @since 1.2
|
|
*/
|
|
public static InputMethodListener add(InputMethodListener a,
|
|
InputMethodListener b)
|
|
{
|
|
return (InputMethodListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>HierarchyListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
* @since 1.3
|
|
*/
|
|
public static HierarchyListener add(HierarchyListener a, HierarchyListener b)
|
|
{
|
|
return (HierarchyListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>HierarchyBoundsListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
* @since 1.3
|
|
*/
|
|
public static HierarchyBoundsListener add(HierarchyBoundsListener a,
|
|
HierarchyBoundsListener b)
|
|
{
|
|
return (HierarchyBoundsListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>MouseWheelListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
* @since 1.4
|
|
*/
|
|
public static MouseWheelListener add(MouseWheelListener a,
|
|
MouseWheelListener b)
|
|
{
|
|
return (MouseWheelListener) addInternal(a, b);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static ComponentListener remove(ComponentListener l,
|
|
ComponentListener oldl)
|
|
{
|
|
return (ComponentListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static ContainerListener remove(ContainerListener l,
|
|
ContainerListener oldl)
|
|
{
|
|
return (ContainerListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static FocusListener remove(FocusListener l, FocusListener oldl)
|
|
{
|
|
return (FocusListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static KeyListener remove(KeyListener l, KeyListener oldl)
|
|
{
|
|
return (KeyListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static MouseListener remove(MouseListener l, MouseListener oldl)
|
|
{
|
|
return (MouseListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static MouseMotionListener remove(MouseMotionListener l,
|
|
MouseMotionListener oldl)
|
|
{
|
|
return (MouseMotionListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static WindowListener remove(WindowListener l, WindowListener oldl)
|
|
{
|
|
return (WindowListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
* @since 1.4
|
|
*/
|
|
public static WindowStateListener remove(WindowStateListener l,
|
|
WindowStateListener oldl)
|
|
{
|
|
return (WindowStateListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
* @since 1.4
|
|
*/
|
|
public static WindowFocusListener remove(WindowFocusListener l,
|
|
WindowFocusListener oldl)
|
|
{
|
|
return (WindowFocusListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static ActionListener remove(ActionListener l, ActionListener oldl)
|
|
{
|
|
return (ActionListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static ItemListener remove(ItemListener l, ItemListener oldl)
|
|
{
|
|
return (ItemListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static AdjustmentListener remove(AdjustmentListener l,
|
|
AdjustmentListener oldl)
|
|
{
|
|
return (AdjustmentListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
public static TextListener remove(TextListener l, TextListener oldl)
|
|
{
|
|
return (TextListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
* @since 1.2
|
|
*/
|
|
public static InputMethodListener remove(InputMethodListener l,
|
|
InputMethodListener oldl)
|
|
{
|
|
return (InputMethodListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
* @since 1.3
|
|
*/
|
|
public static HierarchyListener remove(HierarchyListener l,
|
|
HierarchyListener oldl)
|
|
{
|
|
return (HierarchyListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
* @since 1.3
|
|
*/
|
|
public static HierarchyBoundsListener remove(HierarchyBoundsListener l,
|
|
HierarchyBoundsListener oldl)
|
|
{
|
|
return (HierarchyBoundsListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
* @since 1.4
|
|
*/
|
|
public static MouseWheelListener remove(MouseWheelListener l,
|
|
MouseWheelListener oldl)
|
|
{
|
|
return (MouseWheelListener) removeInternal(l, oldl);
|
|
}
|
|
|
|
/**
|
|
* Chain <code>EventListener</code> a and b.
|
|
*
|
|
* @param a the "a" listener, may be null
|
|
* @param b the "b" listener, may be null
|
|
* @return latest entry in the chain
|
|
*/
|
|
protected static EventListener addInternal(EventListener a, EventListener b)
|
|
{
|
|
if (a == null)
|
|
return b;
|
|
if (b == null)
|
|
return a;
|
|
return new AWTEventMulticaster(a, b);
|
|
}
|
|
|
|
/**
|
|
* Removes the listener <code>oldl</code> from the listener <code>l</code>.
|
|
*
|
|
* @param l the listener chain to reduce
|
|
* @param oldl the listener to remove
|
|
* @return the resulting listener chain
|
|
*/
|
|
protected static EventListener removeInternal(EventListener l,
|
|
EventListener oldl)
|
|
{
|
|
if (l == oldl)
|
|
return null;
|
|
if (l instanceof AWTEventMulticaster)
|
|
return ((AWTEventMulticaster) l).remove(oldl);
|
|
return l;
|
|
}
|
|
|
|
/**
|
|
* Saves all Serializable listeners to a serialization stream.
|
|
*
|
|
* @param s the stream to save to
|
|
* @param k a prefix stream put before each serializable listener
|
|
* @throws IOException if serialization fails
|
|
*/
|
|
protected void saveInternal(ObjectOutputStream s, String k)
|
|
throws IOException
|
|
{
|
|
// This is not documented by Sun, but I think it is correct.
|
|
if (a instanceof AWTEventMulticaster)
|
|
((AWTEventMulticaster) a).saveInternal(s, k);
|
|
else if (a instanceof Serializable)
|
|
{
|
|
s.writeObject(k);
|
|
s.writeObject(a);
|
|
}
|
|
if (b instanceof AWTEventMulticaster)
|
|
((AWTEventMulticaster) b).saveInternal(s, k);
|
|
else if (b instanceof Serializable)
|
|
{
|
|
s.writeObject(k);
|
|
s.writeObject(b);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Saves a Serializable listener chain to a serialization stream.
|
|
*
|
|
* @param s the stream to save to
|
|
* @param k a prefix stream put before each serializable listener
|
|
* @param l the listener chain to save
|
|
* @throws IOException if serialization fails
|
|
*/
|
|
protected static void save(ObjectOutputStream s, String k, EventListener l)
|
|
throws IOException
|
|
{
|
|
// This is not documented by Sun, but I think it is correct.
|
|
if (l instanceof AWTEventMulticaster)
|
|
((AWTEventMulticaster) l).saveInternal(s, k);
|
|
else if (l instanceof Serializable)
|
|
{
|
|
s.writeObject(k);
|
|
s.writeObject(l);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all chained listeners of the specified type in the
|
|
* given chain. A null listener returns an empty array, and a listener
|
|
* which is not an AWTEventMulticaster returns an array of one element. If
|
|
* no listeners in the chain are of the specified type, an empty array is
|
|
* returned.
|
|
*
|
|
* @param l the listener chain to convert to an array
|
|
* @param type the type of listeners to collect
|
|
* @return an array of the listeners of that type in the chain
|
|
* @throws ClassCastException if type is not assignable from EventListener
|
|
* @throws NullPointerException if type is null
|
|
* @throws IllegalArgumentException if type is Void.TYPE
|
|
* @since 1.4
|
|
*/
|
|
public static EventListener[] getListeners(EventListener l, Class type)
|
|
{
|
|
ArrayList list = new ArrayList();
|
|
if (l instanceof AWTEventMulticaster)
|
|
((AWTEventMulticaster) l).getListeners(list, type);
|
|
else if (type.isInstance(l))
|
|
list.add(l);
|
|
EventListener[] r = (EventListener[]) Array.newInstance(type, list.size());
|
|
list.toArray(r);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* Collects all instances of the given type in the chain into the list.
|
|
*
|
|
* @param l the list to collect into
|
|
* @param type the type of listeners to collect
|
|
* @throws NullPointerException if type is null
|
|
* @see #getListeners(EventListener, Class)
|
|
*/
|
|
private void getListeners(ArrayList l, Class type)
|
|
{
|
|
if (a instanceof AWTEventMulticaster)
|
|
((AWTEventMulticaster) a).getListeners(l, type);
|
|
else if (type.isInstance(a))
|
|
l.add(a);
|
|
if (b instanceof AWTEventMulticaster)
|
|
((AWTEventMulticaster) b).getListeners(l, type);
|
|
else if (type.isInstance(b))
|
|
l.add(b);
|
|
}
|
|
} // class AWTEventMulticaster
|