author | phh |
Sat, 30 Nov 2019 14:33:05 -0800 | |
changeset 59330 | 5b96c12f909d |
parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.awt; |
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import java.awt.event.*; |
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import java.lang.reflect.Array; |
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import java.util.EventListener; |
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import java.io.Serializable; |
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import java.io.ObjectOutputStream; |
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import java.io.IOException; |
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import java.util.EventListener; |
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/** |
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* {@code AWTEventMulticaster} implements efficient and thread-safe multi-cast |
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* event dispatching for the AWT events defined in the {@code java.awt.event} |
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* package. |
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* <p> |
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* The following example illustrates how to use this class: |
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* |
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* <pre><code> |
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* public myComponent extends Component { |
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* ActionListener actionListener = null; |
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* |
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* public synchronized void addActionListener(ActionListener l) { |
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* actionListener = AWTEventMulticaster.add(actionListener, l); |
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* } |
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* public synchronized void removeActionListener(ActionListener l) { |
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* actionListener = AWTEventMulticaster.remove(actionListener, l); |
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* } |
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* public void processEvent(AWTEvent e) { |
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* // when event occurs which causes "action" semantic |
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* ActionListener listener = actionListener; |
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* if (listener != null) { |
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* listener.actionPerformed(new ActionEvent()); |
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* } |
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* } |
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* } |
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* </code></pre> |
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* The important point to note is the first argument to the {@code |
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* add} and {@code remove} methods is the field maintaining the |
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* listeners. In addition you must assign the result of the {@code add} |
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* and {@code remove} methods to the field maintaining the listeners. |
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* <p> |
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* {@code AWTEventMulticaster} is implemented as a pair of {@code |
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* EventListeners} that are set at construction time. {@code |
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* AWTEventMulticaster} is immutable. The {@code add} and {@code |
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* remove} methods do not alter {@code AWTEventMulticaster} in |
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* anyway. If necessary, a new {@code AWTEventMulticaster} is |
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* created. In this way it is safe to add and remove listeners during |
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* the process of an event dispatching. However, event listeners |
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* added during the process of an event dispatch operation are not |
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* notified of the event currently being dispatched. |
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* <p> |
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* All of the {@code add} methods allow {@code null} arguments. If the |
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* first argument is {@code null}, the second argument is returned. If |
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* the first argument is not {@code null} and the second argument is |
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* {@code null}, the first argument is returned. If both arguments are |
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* {@code non-null}, a new {@code AWTEventMulticaster} is created using |
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* the two arguments and returned. |
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* <p> |
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* For the {@code remove} methods that take two arguments, the following is |
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* returned: |
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* <ul> |
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* <li>{@code null}, if the first argument is {@code null}, or |
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* the arguments are equal, by way of {@code ==}. |
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* <li>the first argument, if the first argument is not an instance of |
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* {@code AWTEventMulticaster}. |
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* <li>result of invoking {@code remove(EventListener)} on the |
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* first argument, supplying the second argument to the |
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* {@code remove(EventListener)} method. |
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* </ul> |
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* <p>Swing makes use of |
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* {@link javax.swing.event.EventListenerList EventListenerList} for |
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* similar logic. Refer to it for details. |
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* |
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* @see javax.swing.event.EventListenerList |
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* |
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* @author John Rose |
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* @author Amy Fowler |
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* @since 1.1 |
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*/ |
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public class AWTEventMulticaster implements |
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ComponentListener, ContainerListener, FocusListener, KeyListener, |
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MouseListener, MouseMotionListener, WindowListener, WindowFocusListener, |
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WindowStateListener, ActionListener, ItemListener, AdjustmentListener, |
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TextListener, InputMethodListener, HierarchyListener, |
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HierarchyBoundsListener, MouseWheelListener { |
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/** |
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* A variable in the event chain (listener-a) |
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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 (listener-b) |
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*/ |
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protected final EventListener b; |
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/** |
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* Creates an event multicaster instance which chains listener-a |
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* with listener-b. Input parameters {@code a} and {@code b} |
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* should not be {@code null}, though implementations may vary in |
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* choosing whether or not to throw {@code NullPointerException} |
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* in that case. |
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* @param a listener-a |
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* @param b listener-b |
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*/ |
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protected AWTEventMulticaster(EventListener a, EventListener b) { |
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this.a = a; this.b = b; |
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} |
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/** |
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* Removes a listener from this multicaster. |
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* <p> |
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* The returned multicaster contains all the listeners in this |
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* multicaster with the exception of all occurrences of {@code oldl}. |
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* If the resulting multicaster contains only one regular listener |
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* the regular listener may be returned. If the resulting multicaster |
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* is empty, then {@code null} may be returned instead. |
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* <p> |
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* No exception is thrown if {@code oldl} is {@code null}. |
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* |
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* @param oldl the listener to be removed |
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* @return resulting listener |
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*/ |
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protected EventListener remove(EventListener oldl) { |
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if (oldl == a) return b; |
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if (oldl == b) return a; |
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EventListener a2 = removeInternal(a, oldl); |
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EventListener b2 = removeInternal(b, oldl); |
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if (a2 == a && b2 == b) { |
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return this; // it's not here |
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} |
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return addInternal(a2, b2); |
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} |
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/** |
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* Handles the componentResized event by invoking the |
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* componentResized methods on listener-a and listener-b. |
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* @param e the component event |
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*/ |
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public void componentResized(ComponentEvent e) { |
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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 the componentMoved event by invoking the |
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* componentMoved methods on listener-a and listener-b. |
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* @param e the component event |
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*/ |
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public void componentMoved(ComponentEvent e) { |
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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 the componentShown event by invoking the |
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* componentShown methods on listener-a and listener-b. |
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* @param e the component event |
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*/ |
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public void componentShown(ComponentEvent e) { |
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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 the componentHidden event by invoking the |
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* componentHidden methods on listener-a and listener-b. |
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* @param e the component event |
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*/ |
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public void componentHidden(ComponentEvent e) { |
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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 the componentAdded container event by invoking the |
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* componentAdded methods on listener-a and listener-b. |
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* @param e the component event |
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*/ |
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public void componentAdded(ContainerEvent e) { |
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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 the componentRemoved container event by invoking the |
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* componentRemoved methods on listener-a and listener-b. |
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* @param e the component event |
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*/ |
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public void componentRemoved(ContainerEvent e) { |
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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 the focusGained event by invoking the |
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* focusGained methods on listener-a and listener-b. |
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* @param e the focus event |
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*/ |
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public void focusGained(FocusEvent e) { |
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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 the focusLost event by invoking the |
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* focusLost methods on listener-a and listener-b. |
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* @param e the focus event |
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*/ |
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public void focusLost(FocusEvent e) { |
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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 the keyTyped event by invoking the |
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* keyTyped methods on listener-a and listener-b. |
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* @param e the key event |
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*/ |
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public void keyTyped(KeyEvent e) { |
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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 the keyPressed event by invoking the |
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* keyPressed methods on listener-a and listener-b. |
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* @param e the key event |
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*/ |
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public void keyPressed(KeyEvent e) { |
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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 the keyReleased event by invoking the |
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* keyReleased methods on listener-a and listener-b. |
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* @param e the key event |
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*/ |
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public void keyReleased(KeyEvent e) { |
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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 the mouseClicked event by invoking the |
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* mouseClicked methods on listener-a and listener-b. |
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* @param e the mouse event |
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*/ |
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public void mouseClicked(MouseEvent e) { |
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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 the mousePressed event by invoking the |
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* mousePressed methods on listener-a and listener-b. |
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* @param e the mouse event |
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*/ |
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public void mousePressed(MouseEvent e) { |
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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 the mouseReleased event by invoking the |
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* mouseReleased methods on listener-a and listener-b. |
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* @param e the mouse event |
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*/ |
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public void mouseReleased(MouseEvent e) { |
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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 the mouseEntered event by invoking the |
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* mouseEntered methods on listener-a and listener-b. |
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* @param e the mouse event |
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*/ |
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public void mouseEntered(MouseEvent e) { |
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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 the mouseExited event by invoking the |
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* mouseExited methods on listener-a and listener-b. |
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* @param e the mouse event |
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*/ |
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public void mouseExited(MouseEvent e) { |
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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 the mouseDragged event by invoking the |
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* mouseDragged methods on listener-a and listener-b. |
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* @param e the mouse event |
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*/ |
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public void mouseDragged(MouseEvent e) { |
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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 the mouseMoved event by invoking the |
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* mouseMoved methods on listener-a and listener-b. |
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* @param e the mouse event |
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*/ |
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public void mouseMoved(MouseEvent e) { |
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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 the windowOpened event by invoking the |
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* windowOpened methods on listener-a and listener-b. |
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* @param e the window event |
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*/ |
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public void windowOpened(WindowEvent e) { |
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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 the windowClosing event by invoking the |
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* windowClosing methods on listener-a and listener-b. |
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* @param e the window event |
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*/ |
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public void windowClosing(WindowEvent e) { |
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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 the windowClosed event by invoking the |
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* windowClosed methods on listener-a and listener-b. |
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* @param e the window event |
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*/ |
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public void windowClosed(WindowEvent e) { |
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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 the windowIconified event by invoking the |
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* windowIconified methods on listener-a and listener-b. |
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* @param e the window event |
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*/ |
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public void windowIconified(WindowEvent e) { |
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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 the windowDeiconified event by invoking the |
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* windowDeiconified methods on listener-a and listener-b. |
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* @param e the window event |
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*/ |
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public void windowDeiconified(WindowEvent e) { |
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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 the windowActivated event by invoking the |
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* windowActivated methods on listener-a and listener-b. |
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* @param e the window event |
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*/ |
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public void windowActivated(WindowEvent e) { |
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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 the windowDeactivated event by invoking the |
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* windowDeactivated methods on listener-a and listener-b. |
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* @param e the window event |
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*/ |
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public void windowDeactivated(WindowEvent e) { |
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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 the windowStateChanged event by invoking the |
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* windowStateChanged methods on listener-a and listener-b. |
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* @param e the window event |
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* @since 1.4 |
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*/ |
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public void windowStateChanged(WindowEvent e) { |
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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 the windowGainedFocus event by invoking the windowGainedFocus |
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* methods on listener-a and listener-b. |
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* @param e the window event |
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* @since 1.4 |
|
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*/ |
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429 |
public void windowGainedFocus(WindowEvent e) { |
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((WindowFocusListener)a).windowGainedFocus(e); |
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((WindowFocusListener)b).windowGainedFocus(e); |
|
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} |
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/** |
|
435 |
* Handles the windowLostFocus event by invoking the windowLostFocus |
|
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* methods on listener-a and listener-b. |
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* @param e the window event |
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* @since 1.4 |
|
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*/ |
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440 |
public void windowLostFocus(WindowEvent e) { |
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((WindowFocusListener)a).windowLostFocus(e); |
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442 |
((WindowFocusListener)b).windowLostFocus(e); |
|
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} |
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445 |
/** |
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446 |
* Handles the actionPerformed event by invoking the |
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447 |
* actionPerformed methods on listener-a and listener-b. |
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* @param e the action event |
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449 |
*/ |
|
450 |
public void actionPerformed(ActionEvent e) { |
|
451 |
((ActionListener)a).actionPerformed(e); |
|
452 |
((ActionListener)b).actionPerformed(e); |
|
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} |
|
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455 |
/** |
|
456 |
* Handles the itemStateChanged event by invoking the |
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457 |
* itemStateChanged methods on listener-a and listener-b. |
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458 |
* @param e the item event |
|
459 |
*/ |
|
460 |
public void itemStateChanged(ItemEvent e) { |
|
461 |
((ItemListener)a).itemStateChanged(e); |
|
462 |
((ItemListener)b).itemStateChanged(e); |
|
463 |
} |
|
464 |
||
465 |
/** |
|
466 |
* Handles the adjustmentValueChanged event by invoking the |
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467 |
* adjustmentValueChanged methods on listener-a and listener-b. |
|
468 |
* @param e the adjustment event |
|
469 |
*/ |
|
470 |
public void adjustmentValueChanged(AdjustmentEvent e) { |
|
471 |
((AdjustmentListener)a).adjustmentValueChanged(e); |
|
472 |
((AdjustmentListener)b).adjustmentValueChanged(e); |
|
473 |
} |
|
474 |
public void textValueChanged(TextEvent e) { |
|
475 |
((TextListener)a).textValueChanged(e); |
|
476 |
((TextListener)b).textValueChanged(e); |
|
477 |
} |
|
478 |
||
479 |
/** |
|
480 |
* Handles the inputMethodTextChanged event by invoking the |
|
481 |
* inputMethodTextChanged methods on listener-a and listener-b. |
|
482 |
* @param e the item event |
|
483 |
*/ |
|
484 |
public void inputMethodTextChanged(InputMethodEvent e) { |
|
485 |
((InputMethodListener)a).inputMethodTextChanged(e); |
|
486 |
((InputMethodListener)b).inputMethodTextChanged(e); |
|
487 |
} |
|
488 |
||
489 |
/** |
|
490 |
* Handles the caretPositionChanged event by invoking the |
|
491 |
* caretPositionChanged methods on listener-a and listener-b. |
|
492 |
* @param e the item event |
|
493 |
*/ |
|
494 |
public void caretPositionChanged(InputMethodEvent e) { |
|
495 |
((InputMethodListener)a).caretPositionChanged(e); |
|
496 |
((InputMethodListener)b).caretPositionChanged(e); |
|
497 |
} |
|
498 |
||
499 |
/** |
|
500 |
* Handles the hierarchyChanged event by invoking the |
|
501 |
* hierarchyChanged methods on listener-a and listener-b. |
|
502 |
* @param e the item event |
|
503 |
* @since 1.3 |
|
504 |
*/ |
|
505 |
public void hierarchyChanged(HierarchyEvent e) { |
|
506 |
((HierarchyListener)a).hierarchyChanged(e); |
|
507 |
((HierarchyListener)b).hierarchyChanged(e); |
|
508 |
} |
|
509 |
||
510 |
/** |
|
511 |
* Handles the ancestorMoved event by invoking the |
|
512 |
* ancestorMoved methods on listener-a and listener-b. |
|
513 |
* @param e the item event |
|
514 |
* @since 1.3 |
|
515 |
*/ |
|
516 |
public void ancestorMoved(HierarchyEvent e) { |
|
517 |
((HierarchyBoundsListener)a).ancestorMoved(e); |
|
518 |
((HierarchyBoundsListener)b).ancestorMoved(e); |
|
519 |
} |
|
520 |
||
521 |
/** |
|
522 |
* Handles the ancestorResized event by invoking the |
|
523 |
* ancestorResized methods on listener-a and listener-b. |
|
524 |
* @param e the item event |
|
525 |
* @since 1.3 |
|
526 |
*/ |
|
527 |
public void ancestorResized(HierarchyEvent e) { |
|
528 |
((HierarchyBoundsListener)a).ancestorResized(e); |
|
529 |
((HierarchyBoundsListener)b).ancestorResized(e); |
|
530 |
} |
|
531 |
||
532 |
/** |
|
533 |
* Handles the mouseWheelMoved event by invoking the |
|
534 |
* mouseWheelMoved methods on listener-a and listener-b. |
|
535 |
* @param e the mouse event |
|
536 |
* @since 1.4 |
|
537 |
*/ |
|
538 |
public void mouseWheelMoved(MouseWheelEvent e) { |
|
539 |
((MouseWheelListener)a).mouseWheelMoved(e); |
|
540 |
((MouseWheelListener)b).mouseWheelMoved(e); |
|
541 |
} |
|
542 |
||
543 |
/** |
|
544 |
* Adds component-listener-a with component-listener-b and |
|
545 |
* returns the resulting multicast listener. |
|
546 |
* @param a component-listener-a |
|
547 |
* @param b component-listener-b |
|
25162 | 548 |
* @return the resulting listener |
2 | 549 |
*/ |
550 |
public static ComponentListener add(ComponentListener a, ComponentListener b) { |
|
551 |
return (ComponentListener)addInternal(a, b); |
|
552 |
} |
|
553 |
||
554 |
/** |
|
555 |
* Adds container-listener-a with container-listener-b and |
|
556 |
* returns the resulting multicast listener. |
|
557 |
* @param a container-listener-a |
|
558 |
* @param b container-listener-b |
|
25162 | 559 |
* @return the resulting listener |
2 | 560 |
*/ |
561 |
public static ContainerListener add(ContainerListener a, ContainerListener b) { |
|
562 |
return (ContainerListener)addInternal(a, b); |
|
563 |
} |
|
564 |
||
565 |
/** |
|
566 |
* Adds focus-listener-a with focus-listener-b and |
|
567 |
* returns the resulting multicast listener. |
|
568 |
* @param a focus-listener-a |
|
569 |
* @param b focus-listener-b |
|
25162 | 570 |
* @return the resulting listener |
2 | 571 |
*/ |
572 |
public static FocusListener add(FocusListener a, FocusListener b) { |
|
573 |
return (FocusListener)addInternal(a, b); |
|
574 |
} |
|
575 |
||
576 |
/** |
|
577 |
* Adds key-listener-a with key-listener-b and |
|
578 |
* returns the resulting multicast listener. |
|
579 |
* @param a key-listener-a |
|
580 |
* @param b key-listener-b |
|
25162 | 581 |
* @return the resulting listener |
2 | 582 |
*/ |
583 |
public static KeyListener add(KeyListener a, KeyListener b) { |
|
584 |
return (KeyListener)addInternal(a, b); |
|
585 |
} |
|
586 |
||
587 |
/** |
|
588 |
* Adds mouse-listener-a with mouse-listener-b and |
|
589 |
* returns the resulting multicast listener. |
|
590 |
* @param a mouse-listener-a |
|
591 |
* @param b mouse-listener-b |
|
25162 | 592 |
* @return the resulting listener |
2 | 593 |
*/ |
594 |
public static MouseListener add(MouseListener a, MouseListener b) { |
|
595 |
return (MouseListener)addInternal(a, b); |
|
596 |
} |
|
597 |
||
598 |
/** |
|
599 |
* Adds mouse-motion-listener-a with mouse-motion-listener-b and |
|
600 |
* returns the resulting multicast listener. |
|
601 |
* @param a mouse-motion-listener-a |
|
602 |
* @param b mouse-motion-listener-b |
|
25162 | 603 |
* @return the resulting listener |
2 | 604 |
*/ |
605 |
public static MouseMotionListener add(MouseMotionListener a, MouseMotionListener b) { |
|
606 |
return (MouseMotionListener)addInternal(a, b); |
|
607 |
} |
|
608 |
||
609 |
/** |
|
610 |
* Adds window-listener-a with window-listener-b and |
|
611 |
* returns the resulting multicast listener. |
|
612 |
* @param a window-listener-a |
|
613 |
* @param b window-listener-b |
|
25162 | 614 |
* @return the resulting listener |
2 | 615 |
*/ |
616 |
public static WindowListener add(WindowListener a, WindowListener b) { |
|
617 |
return (WindowListener)addInternal(a, b); |
|
618 |
} |
|
619 |
||
620 |
/** |
|
621 |
* Adds window-state-listener-a with window-state-listener-b |
|
622 |
* and returns the resulting multicast listener. |
|
623 |
* @param a window-state-listener-a |
|
624 |
* @param b window-state-listener-b |
|
25162 | 625 |
* @return the resulting listener |
2 | 626 |
* @since 1.4 |
627 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
628 |
@SuppressWarnings("overloads") |
2 | 629 |
public static WindowStateListener add(WindowStateListener a, |
630 |
WindowStateListener b) { |
|
631 |
return (WindowStateListener)addInternal(a, b); |
|
632 |
} |
|
633 |
||
634 |
/** |
|
635 |
* Adds window-focus-listener-a with window-focus-listener-b |
|
636 |
* and returns the resulting multicast listener. |
|
637 |
* @param a window-focus-listener-a |
|
638 |
* @param b window-focus-listener-b |
|
25162 | 639 |
* @return the resulting listener |
2 | 640 |
* @since 1.4 |
641 |
*/ |
|
642 |
public static WindowFocusListener add(WindowFocusListener a, |
|
643 |
WindowFocusListener b) { |
|
644 |
return (WindowFocusListener)addInternal(a, b); |
|
645 |
} |
|
646 |
||
647 |
/** |
|
648 |
* Adds action-listener-a with action-listener-b and |
|
649 |
* returns the resulting multicast listener. |
|
650 |
* @param a action-listener-a |
|
651 |
* @param b action-listener-b |
|
25162 | 652 |
* @return the resulting listener |
2 | 653 |
*/ |
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
654 |
@SuppressWarnings("overloads") |
2 | 655 |
public static ActionListener add(ActionListener a, ActionListener b) { |
656 |
return (ActionListener)addInternal(a, b); |
|
657 |
} |
|
658 |
||
659 |
/** |
|
660 |
* Adds item-listener-a with item-listener-b and |
|
661 |
* returns the resulting multicast listener. |
|
662 |
* @param a item-listener-a |
|
663 |
* @param b item-listener-b |
|
25162 | 664 |
* @return the resulting listener |
2 | 665 |
*/ |
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
666 |
@SuppressWarnings("overloads") |
2 | 667 |
public static ItemListener add(ItemListener a, ItemListener b) { |
668 |
return (ItemListener)addInternal(a, b); |
|
669 |
} |
|
670 |
||
671 |
/** |
|
672 |
* Adds adjustment-listener-a with adjustment-listener-b and |
|
673 |
* returns the resulting multicast listener. |
|
674 |
* @param a adjustment-listener-a |
|
675 |
* @param b adjustment-listener-b |
|
25162 | 676 |
* @return the resulting listener |
2 | 677 |
*/ |
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
678 |
@SuppressWarnings("overloads") |
2 | 679 |
public static AdjustmentListener add(AdjustmentListener a, AdjustmentListener b) { |
680 |
return (AdjustmentListener)addInternal(a, b); |
|
681 |
} |
|
25162 | 682 |
|
683 |
/** |
|
684 |
* Adds text-listener-a with text-listener-b and |
|
685 |
* returns the resulting multicast listener. |
|
686 |
* |
|
687 |
* @param a text-listener-a |
|
688 |
* @param b text-listener-b |
|
689 |
* @return the resulting listener |
|
690 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
691 |
@SuppressWarnings("overloads") |
2 | 692 |
public static TextListener add(TextListener a, TextListener b) { |
693 |
return (TextListener)addInternal(a, b); |
|
694 |
} |
|
695 |
||
696 |
/** |
|
697 |
* Adds input-method-listener-a with input-method-listener-b and |
|
698 |
* returns the resulting multicast listener. |
|
699 |
* @param a input-method-listener-a |
|
700 |
* @param b input-method-listener-b |
|
25162 | 701 |
* @return the resulting listener |
2 | 702 |
*/ |
703 |
public static InputMethodListener add(InputMethodListener a, InputMethodListener b) { |
|
704 |
return (InputMethodListener)addInternal(a, b); |
|
705 |
} |
|
706 |
||
707 |
/** |
|
708 |
* Adds hierarchy-listener-a with hierarchy-listener-b and |
|
709 |
* returns the resulting multicast listener. |
|
710 |
* @param a hierarchy-listener-a |
|
711 |
* @param b hierarchy-listener-b |
|
25162 | 712 |
* @return the resulting listener |
2 | 713 |
* @since 1.3 |
714 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
715 |
@SuppressWarnings("overloads") |
2 | 716 |
public static HierarchyListener add(HierarchyListener a, HierarchyListener b) { |
717 |
return (HierarchyListener)addInternal(a, b); |
|
718 |
} |
|
719 |
||
720 |
/** |
|
721 |
* Adds hierarchy-bounds-listener-a with hierarchy-bounds-listener-b and |
|
722 |
* returns the resulting multicast listener. |
|
723 |
* @param a hierarchy-bounds-listener-a |
|
724 |
* @param b hierarchy-bounds-listener-b |
|
25162 | 725 |
* @return the resulting listener |
2 | 726 |
* @since 1.3 |
727 |
*/ |
|
728 |
public static HierarchyBoundsListener add(HierarchyBoundsListener a, HierarchyBoundsListener b) { |
|
729 |
return (HierarchyBoundsListener)addInternal(a, b); |
|
730 |
} |
|
731 |
||
732 |
/** |
|
733 |
* Adds mouse-wheel-listener-a with mouse-wheel-listener-b and |
|
734 |
* returns the resulting multicast listener. |
|
735 |
* @param a mouse-wheel-listener-a |
|
736 |
* @param b mouse-wheel-listener-b |
|
25162 | 737 |
* @return the resulting listener |
2 | 738 |
* @since 1.4 |
739 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
740 |
@SuppressWarnings("overloads") |
2 | 741 |
public static MouseWheelListener add(MouseWheelListener a, |
742 |
MouseWheelListener b) { |
|
743 |
return (MouseWheelListener)addInternal(a, b); |
|
744 |
} |
|
745 |
||
746 |
/** |
|
747 |
* Removes the old component-listener from component-listener-l and |
|
748 |
* returns the resulting multicast listener. |
|
749 |
* @param l component-listener-l |
|
750 |
* @param oldl the component-listener being removed |
|
25162 | 751 |
* @return the resulting listener |
2 | 752 |
*/ |
753 |
public static ComponentListener remove(ComponentListener l, ComponentListener oldl) { |
|
754 |
return (ComponentListener) removeInternal(l, oldl); |
|
755 |
} |
|
756 |
||
757 |
/** |
|
758 |
* Removes the old container-listener from container-listener-l and |
|
759 |
* returns the resulting multicast listener. |
|
760 |
* @param l container-listener-l |
|
761 |
* @param oldl the container-listener being removed |
|
25162 | 762 |
* @return the resulting listener |
2 | 763 |
*/ |
764 |
public static ContainerListener remove(ContainerListener l, ContainerListener oldl) { |
|
765 |
return (ContainerListener) removeInternal(l, oldl); |
|
766 |
} |
|
767 |
||
768 |
/** |
|
769 |
* Removes the old focus-listener from focus-listener-l and |
|
770 |
* returns the resulting multicast listener. |
|
771 |
* @param l focus-listener-l |
|
772 |
* @param oldl the focus-listener being removed |
|
25162 | 773 |
* @return the resulting listener |
2 | 774 |
*/ |
775 |
public static FocusListener remove(FocusListener l, FocusListener oldl) { |
|
776 |
return (FocusListener) removeInternal(l, oldl); |
|
777 |
} |
|
778 |
||
779 |
/** |
|
780 |
* Removes the old key-listener from key-listener-l and |
|
781 |
* returns the resulting multicast listener. |
|
782 |
* @param l key-listener-l |
|
783 |
* @param oldl the key-listener being removed |
|
25162 | 784 |
* @return the resulting listener |
2 | 785 |
*/ |
786 |
public static KeyListener remove(KeyListener l, KeyListener oldl) { |
|
787 |
return (KeyListener) removeInternal(l, oldl); |
|
788 |
} |
|
789 |
||
790 |
/** |
|
791 |
* Removes the old mouse-listener from mouse-listener-l and |
|
792 |
* returns the resulting multicast listener. |
|
793 |
* @param l mouse-listener-l |
|
794 |
* @param oldl the mouse-listener being removed |
|
25162 | 795 |
* @return the resulting listener |
2 | 796 |
*/ |
797 |
public static MouseListener remove(MouseListener l, MouseListener oldl) { |
|
798 |
return (MouseListener) removeInternal(l, oldl); |
|
799 |
} |
|
800 |
||
801 |
/** |
|
802 |
* Removes the old mouse-motion-listener from mouse-motion-listener-l |
|
803 |
* and returns the resulting multicast listener. |
|
804 |
* @param l mouse-motion-listener-l |
|
805 |
* @param oldl the mouse-motion-listener being removed |
|
25162 | 806 |
* @return the resulting listener |
2 | 807 |
*/ |
808 |
public static MouseMotionListener remove(MouseMotionListener l, MouseMotionListener oldl) { |
|
809 |
return (MouseMotionListener) removeInternal(l, oldl); |
|
810 |
} |
|
811 |
||
812 |
/** |
|
813 |
* Removes the old window-listener from window-listener-l and |
|
814 |
* returns the resulting multicast listener. |
|
815 |
* @param l window-listener-l |
|
816 |
* @param oldl the window-listener being removed |
|
25162 | 817 |
* @return the resulting listener |
2 | 818 |
*/ |
819 |
public static WindowListener remove(WindowListener l, WindowListener oldl) { |
|
820 |
return (WindowListener) removeInternal(l, oldl); |
|
821 |
} |
|
822 |
||
823 |
/** |
|
824 |
* Removes the old window-state-listener from window-state-listener-l |
|
825 |
* and returns the resulting multicast listener. |
|
826 |
* @param l window-state-listener-l |
|
827 |
* @param oldl the window-state-listener being removed |
|
25162 | 828 |
* @return the resulting listener |
2 | 829 |
* @since 1.4 |
830 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
831 |
@SuppressWarnings("overloads") |
2 | 832 |
public static WindowStateListener remove(WindowStateListener l, |
833 |
WindowStateListener oldl) { |
|
834 |
return (WindowStateListener) removeInternal(l, oldl); |
|
835 |
} |
|
836 |
||
837 |
/** |
|
838 |
* Removes the old window-focus-listener from window-focus-listener-l |
|
839 |
* and returns the resulting multicast listener. |
|
840 |
* @param l window-focus-listener-l |
|
841 |
* @param oldl the window-focus-listener being removed |
|
25162 | 842 |
* @return the resulting listener |
2 | 843 |
* @since 1.4 |
844 |
*/ |
|
845 |
public static WindowFocusListener remove(WindowFocusListener l, |
|
846 |
WindowFocusListener oldl) { |
|
847 |
return (WindowFocusListener) removeInternal(l, oldl); |
|
848 |
} |
|
849 |
||
850 |
/** |
|
851 |
* Removes the old action-listener from action-listener-l and |
|
852 |
* returns the resulting multicast listener. |
|
853 |
* @param l action-listener-l |
|
854 |
* @param oldl the action-listener being removed |
|
25162 | 855 |
* @return the resulting listener |
2 | 856 |
*/ |
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
857 |
@SuppressWarnings("overloads") |
2 | 858 |
public static ActionListener remove(ActionListener l, ActionListener oldl) { |
859 |
return (ActionListener) removeInternal(l, oldl); |
|
860 |
} |
|
861 |
||
862 |
/** |
|
863 |
* Removes the old item-listener from item-listener-l and |
|
864 |
* returns the resulting multicast listener. |
|
865 |
* @param l item-listener-l |
|
866 |
* @param oldl the item-listener being removed |
|
25162 | 867 |
* @return the resulting listener |
2 | 868 |
*/ |
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
869 |
@SuppressWarnings("overloads") |
2 | 870 |
public static ItemListener remove(ItemListener l, ItemListener oldl) { |
871 |
return (ItemListener) removeInternal(l, oldl); |
|
872 |
} |
|
873 |
||
874 |
/** |
|
875 |
* Removes the old adjustment-listener from adjustment-listener-l and |
|
876 |
* returns the resulting multicast listener. |
|
877 |
* @param l adjustment-listener-l |
|
878 |
* @param oldl the adjustment-listener being removed |
|
25162 | 879 |
* @return the resulting listener |
2 | 880 |
*/ |
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
881 |
@SuppressWarnings("overloads") |
2 | 882 |
public static AdjustmentListener remove(AdjustmentListener l, AdjustmentListener oldl) { |
883 |
return (AdjustmentListener) removeInternal(l, oldl); |
|
884 |
} |
|
25162 | 885 |
|
886 |
/** |
|
887 |
* Removes the old text-listener from text-listener-l and |
|
888 |
* returns the resulting multicast listener. |
|
889 |
* |
|
890 |
* @param l text-listener-l |
|
891 |
* @param oldl the text-listener being removed |
|
892 |
* @return the resulting listener |
|
893 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
894 |
@SuppressWarnings("overloads") |
2 | 895 |
public static TextListener remove(TextListener l, TextListener oldl) { |
896 |
return (TextListener) removeInternal(l, oldl); |
|
897 |
} |
|
898 |
||
899 |
/** |
|
900 |
* Removes the old input-method-listener from input-method-listener-l and |
|
901 |
* returns the resulting multicast listener. |
|
902 |
* @param l input-method-listener-l |
|
903 |
* @param oldl the input-method-listener being removed |
|
25162 | 904 |
* @return the resulting listener |
2 | 905 |
*/ |
906 |
public static InputMethodListener remove(InputMethodListener l, InputMethodListener oldl) { |
|
907 |
return (InputMethodListener) removeInternal(l, oldl); |
|
908 |
} |
|
909 |
||
910 |
/** |
|
911 |
* Removes the old hierarchy-listener from hierarchy-listener-l and |
|
912 |
* returns the resulting multicast listener. |
|
913 |
* @param l hierarchy-listener-l |
|
914 |
* @param oldl the hierarchy-listener being removed |
|
25162 | 915 |
* @return the resulting listener |
2 | 916 |
* @since 1.3 |
917 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
918 |
@SuppressWarnings("overloads") |
2 | 919 |
public static HierarchyListener remove(HierarchyListener l, HierarchyListener oldl) { |
920 |
return (HierarchyListener) removeInternal(l, oldl); |
|
921 |
} |
|
922 |
||
923 |
/** |
|
924 |
* Removes the old hierarchy-bounds-listener from |
|
925 |
* hierarchy-bounds-listener-l and returns the resulting multicast |
|
926 |
* listener. |
|
927 |
* @param l hierarchy-bounds-listener-l |
|
928 |
* @param oldl the hierarchy-bounds-listener being removed |
|
25162 | 929 |
* @return the resulting listener |
2 | 930 |
* @since 1.3 |
931 |
*/ |
|
932 |
public static HierarchyBoundsListener remove(HierarchyBoundsListener l, HierarchyBoundsListener oldl) { |
|
933 |
return (HierarchyBoundsListener) removeInternal(l, oldl); |
|
934 |
} |
|
935 |
||
936 |
/** |
|
937 |
* Removes the old mouse-wheel-listener from mouse-wheel-listener-l |
|
938 |
* and returns the resulting multicast listener. |
|
939 |
* @param l mouse-wheel-listener-l |
|
940 |
* @param oldl the mouse-wheel-listener being removed |
|
25162 | 941 |
* @return the resulting listener |
2 | 942 |
* @since 1.4 |
943 |
*/ |
|
22282
cf7ce8b79a25
8031550: Fix overloads lint warnings in client code
darcy
parents:
21278
diff
changeset
|
944 |
@SuppressWarnings("overloads") |
2 | 945 |
public static MouseWheelListener remove(MouseWheelListener l, |
946 |
MouseWheelListener oldl) { |
|
947 |
return (MouseWheelListener) removeInternal(l, oldl); |
|
948 |
} |
|
949 |
||
950 |
/** |
|
951 |
* Returns the resulting multicast listener from adding listener-a |
|
952 |
* and listener-b together. |
|
953 |
* If listener-a is null, it returns listener-b; |
|
954 |
* If listener-b is null, it returns listener-a |
|
955 |
* If neither are null, then it creates and returns |
|
956 |
* a new AWTEventMulticaster instance which chains a with b. |
|
957 |
* @param a event listener-a |
|
958 |
* @param b event listener-b |
|
25162 | 959 |
* @return the resulting listener |
2 | 960 |
*/ |
961 |
protected static EventListener addInternal(EventListener a, EventListener b) { |
|
962 |
if (a == null) return b; |
|
963 |
if (b == null) return a; |
|
964 |
return new AWTEventMulticaster(a, b); |
|
965 |
} |
|
966 |
||
967 |
/** |
|
968 |
* Returns the resulting multicast listener after removing the |
|
969 |
* old listener from listener-l. |
|
970 |
* If listener-l equals the old listener OR listener-l is null, |
|
971 |
* returns null. |
|
972 |
* Else if listener-l is an instance of AWTEventMulticaster, |
|
973 |
* then it removes the old listener from it. |
|
974 |
* Else, returns listener l. |
|
975 |
* @param l the listener being removed from |
|
976 |
* @param oldl the listener being removed |
|
25162 | 977 |
* @return the resulting listener |
2 | 978 |
*/ |
979 |
protected static EventListener removeInternal(EventListener l, EventListener oldl) { |
|
980 |
if (l == oldl || l == null) { |
|
981 |
return null; |
|
982 |
} else if (l instanceof AWTEventMulticaster) { |
|
983 |
return ((AWTEventMulticaster)l).remove(oldl); |
|
984 |
} else { |
|
985 |
return l; // it's not here |
|
986 |
} |
|
987 |
} |
|
988 |
||
989 |
||
25162 | 990 |
/** |
991 |
* Serialization support. Saves all Serializable listeners |
|
992 |
* to a serialization stream. |
|
993 |
* |
|
994 |
* @param s the stream to save to |
|
995 |
* @param k a prefix stream to put before each serializable listener |
|
996 |
* @throws IOException if serialization fails |
|
997 |
*/ |
|
2 | 998 |
protected void saveInternal(ObjectOutputStream s, String k) throws IOException { |
999 |
if (a instanceof AWTEventMulticaster) { |
|
1000 |
((AWTEventMulticaster)a).saveInternal(s, k); |
|
1001 |
} |
|
1002 |
else if (a instanceof Serializable) { |
|
1003 |
s.writeObject(k); |
|
1004 |
s.writeObject(a); |
|
1005 |
} |
|
1006 |
||
1007 |
if (b instanceof AWTEventMulticaster) { |
|
1008 |
((AWTEventMulticaster)b).saveInternal(s, k); |
|
1009 |
} |
|
1010 |
else if (b instanceof Serializable) { |
|
1011 |
s.writeObject(k); |
|
1012 |
s.writeObject(b); |
|
1013 |
} |
|
1014 |
} |
|
1015 |
||
25162 | 1016 |
/** |
1017 |
* Saves a Serializable listener chain to a serialization stream. |
|
1018 |
* |
|
1019 |
* @param s the stream to save to |
|
1020 |
* @param k a prefix stream to put before each serializable listener |
|
1021 |
* @param l the listener chain to save |
|
1022 |
* @throws IOException if serialization fails |
|
1023 |
*/ |
|
2 | 1024 |
protected static void save(ObjectOutputStream s, String k, EventListener l) throws IOException { |
1025 |
if (l == null) { |
|
1026 |
return; |
|
1027 |
} |
|
1028 |
else if (l instanceof AWTEventMulticaster) { |
|
1029 |
((AWTEventMulticaster)l).saveInternal(s, k); |
|
1030 |
} |
|
1031 |
else if (l instanceof Serializable) { |
|
1032 |
s.writeObject(k); |
|
1033 |
s.writeObject(l); |
|
1034 |
} |
|
1035 |
} |
|
1036 |
||
1037 |
/* |
|
1038 |
* Recursive method which returns a count of the number of listeners in |
|
1039 |
* EventListener, handling the (common) case of l actually being an |
|
1040 |
* AWTEventMulticaster. Additionally, only listeners of type listenerType |
|
1041 |
* are counted. Method modified to fix bug 4513402. -bchristi |
|
1042 |
*/ |
|
11270
d7b0b63bd082
7117334: Warnings cleanup day: reduce number of javac warnings in the java.awt package
bagiras
parents:
5506
diff
changeset
|
1043 |
private static int getListenerCount(EventListener l, Class<?> listenerType) { |
2 | 1044 |
if (l instanceof AWTEventMulticaster) { |
1045 |
AWTEventMulticaster mc = (AWTEventMulticaster)l; |
|
1046 |
return getListenerCount(mc.a, listenerType) + |
|
1047 |
getListenerCount(mc.b, listenerType); |
|
1048 |
} |
|
1049 |
else { |
|
1050 |
// Only count listeners of correct type |
|
1051 |
return listenerType.isInstance(l) ? 1 : 0; |
|
1052 |
} |
|
1053 |
} |
|
1054 |
||
1055 |
/* |
|
26749 | 1056 |
* Recursive method which populates EventListener array a with EventListeners |
2 | 1057 |
* from l. l is usually an AWTEventMulticaster. Bug 4513402 revealed that |
1058 |
* if l differed in type from the element type of a, an ArrayStoreException |
|
1059 |
* would occur. Now l is only inserted into a if it's of the appropriate |
|
1060 |
* type. -bchristi |
|
1061 |
*/ |
|
1062 |
private static int populateListenerArray(EventListener[] a, EventListener l, int index) { |
|
1063 |
if (l instanceof AWTEventMulticaster) { |
|
1064 |
AWTEventMulticaster mc = (AWTEventMulticaster)l; |
|
1065 |
int lhs = populateListenerArray(a, mc.a, index); |
|
1066 |
return populateListenerArray(a, mc.b, lhs); |
|
1067 |
} |
|
1068 |
else if (a.getClass().getComponentType().isInstance(l)) { |
|
1069 |
a[index] = l; |
|
1070 |
return index + 1; |
|
1071 |
} |
|
1072 |
// Skip nulls, instances of wrong class |
|
1073 |
else { |
|
1074 |
return index; |
|
1075 |
} |
|
1076 |
} |
|
1077 |
||
1078 |
/** |
|
1079 |
* Returns an array of all the objects chained as |
|
1080 |
* <code><em>Foo</em>Listener</code>s by the specified |
|
35667 | 1081 |
* {@code java.util.EventListener}. |
2 | 1082 |
* <code><em>Foo</em>Listener</code>s are chained by the |
35667 | 1083 |
* {@code AWTEventMulticaster} using the |
2 | 1084 |
* <code>add<em>Foo</em>Listener</code> method. |
35667 | 1085 |
* If a {@code null} listener is specified, this method returns an |
2 | 1086 |
* empty array. If the specified listener is not an instance of |
35667 | 1087 |
* {@code AWTEventMulticaster}, this method returns an array which |
21278 | 1088 |
* contains only the specified listener. If no such listeners are chained, |
2 | 1089 |
* this method returns an empty array. |
1090 |
* |
|
29886 | 1091 |
* @param <T> the listener type |
35667 | 1092 |
* @param l the specified {@code java.util.EventListener} |
2 | 1093 |
* @param listenerType the type of listeners requested; this parameter |
1094 |
* should specify an interface that descends from |
|
35667 | 1095 |
* {@code java.util.EventListener} |
2 | 1096 |
* @return an array of all objects chained as |
1097 |
* <code><em>Foo</em>Listener</code>s by the specified multicast |
|
1098 |
* listener, or an empty array if no such listeners have been |
|
1099 |
* chained by the specified multicast listener |
|
1100 |
* @exception NullPointerException if the specified |
|
1101 |
* {@code listenertype} parameter is {@code null} |
|
35667 | 1102 |
* @exception ClassCastException if {@code listenerType} |
2 | 1103 |
* doesn't specify a class or interface that implements |
35667 | 1104 |
* {@code java.util.EventListener} |
2 | 1105 |
* |
1106 |
* @since 1.4 |
|
1107 |
*/ |
|
11270
d7b0b63bd082
7117334: Warnings cleanup day: reduce number of javac warnings in the java.awt package
bagiras
parents:
5506
diff
changeset
|
1108 |
@SuppressWarnings("unchecked") |
2 | 1109 |
public static <T extends EventListener> T[] |
1110 |
getListeners(EventListener l, Class<T> listenerType) |
|
1111 |
{ |
|
1112 |
if (listenerType == null) { |
|
1113 |
throw new NullPointerException ("Listener type should not be null"); |
|
1114 |
} |
|
1115 |
||
1116 |
int n = getListenerCount(l, listenerType); |
|
1117 |
T[] result = (T[])Array.newInstance(listenerType, n); |
|
1118 |
populateListenerArray(result, l, 0); |
|
1119 |
return result; |
|
1120 |
} |
|
1121 |
} |