diff options
Diffstat (limited to 'libjava/classpath/java/awt/event/AWTEventListenerProxy.java')
| -rw-r--r-- | libjava/classpath/java/awt/event/AWTEventListenerProxy.java | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/event/AWTEventListenerProxy.java b/libjava/classpath/java/awt/event/AWTEventListenerProxy.java new file mode 100644 index 00000000000..3d9958b1abd --- /dev/null +++ b/libjava/classpath/java/awt/event/AWTEventListenerProxy.java @@ -0,0 +1,155 @@ +/* AWTEventListenerProxy.java -- wrapper/filter for AWTEventListener + Copyright (C) 2002, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.event; + +import java.awt.AWTEvent; +import java.awt.Toolkit; +import java.util.EventListenerProxy; + +/** + * This class allows adding an AWTEventListener which only pays attention to + * a specific event mask. + * + * @author Eric Blake (ebb9@email.byu.edu) + * @see Toolkit + * @see EventListenerProxy + * @since 1.4 + * @status updated to 1.4 + */ +public class AWTEventListenerProxy extends EventListenerProxy + implements AWTEventListener +{ + /** The event mask. */ + private final long mask; + + /** + * Construct an AWT Event Listener which only listens to events in the given + * mask, passing the work on to the real listener. + * + * @param eventMask the mask of events to listen to + * @param listener the wrapped listener + */ + public AWTEventListenerProxy(long eventMask, AWTEventListener listener) + { + super(listener); + mask = eventMask; + } + + /** + * Forwards events on to the delegate if they meet the event mask. + * + * @param event the property change event to filter + * @throws NullPointerException if the delegate this was created with is null + */ + public void eventDispatched(AWTEvent event) + { + int id = event == null ? 0 : event.getID(); + if (((mask & AWTEvent.ACTION_EVENT_MASK) != 0 + && event instanceof ActionEvent) + || ((mask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 + && event instanceof AdjustmentEvent) + || ((mask & AWTEvent.COMPONENT_EVENT_MASK) != 0 + && event instanceof ComponentEvent + && (id >= ComponentEvent.COMPONENT_FIRST + && id <= ComponentEvent.COMPONENT_LAST)) + || ((mask & AWTEvent.CONTAINER_EVENT_MASK) != 0 + && event instanceof ContainerEvent) + || ((mask & AWTEvent.FOCUS_EVENT_MASK) != 0 + && event instanceof FocusEvent) + || ((mask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 + && event instanceof HierarchyEvent + && (id == HierarchyEvent.ANCESTOR_MOVED + || id == HierarchyEvent.ANCESTOR_RESIZED)) + || ((mask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 + && event instanceof HierarchyEvent + && id == HierarchyEvent.HIERARCHY_CHANGED) + || ((mask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 + && event instanceof InputMethodEvent) + || ((mask & AWTEvent.INVOCATION_EVENT_MASK) != 0 + && event instanceof InvocationEvent) + || ((mask & AWTEvent.ITEM_EVENT_MASK) != 0 + && event instanceof ItemEvent) + || ((mask & AWTEvent.KEY_EVENT_MASK) != 0 + && event instanceof KeyEvent) + || ((mask & AWTEvent.MOUSE_EVENT_MASK) != 0 + && event instanceof MouseEvent + && (id == MouseEvent.MOUSE_PRESSED + || id == MouseEvent.MOUSE_RELEASED + || id == MouseEvent.MOUSE_CLICKED + || id == MouseEvent.MOUSE_ENTERED + || id == MouseEvent.MOUSE_EXITED)) + || ((mask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 + && event instanceof MouseEvent + && (id == MouseEvent.MOUSE_MOVED + || id == MouseEvent.MOUSE_DRAGGED)) + || ((mask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 + && event instanceof MouseWheelEvent) + || ((mask & AWTEvent.PAINT_EVENT_MASK) != 0 + && event instanceof PaintEvent) + || ((mask & AWTEvent.TEXT_EVENT_MASK) != 0 + && event instanceof TextEvent) + || ((mask & AWTEvent.WINDOW_EVENT_MASK) != 0 + && event instanceof WindowEvent + && (id == WindowEvent.WINDOW_OPENED + || id == WindowEvent.WINDOW_CLOSING + || id == WindowEvent.WINDOW_CLOSED + || id == WindowEvent.WINDOW_ICONIFIED + || id == WindowEvent.WINDOW_DEICONIFIED + || id == WindowEvent.WINDOW_ACTIVATED + || id == WindowEvent.WINDOW_DEACTIVATED)) + || ((mask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 + && event instanceof WindowEvent + && (id == WindowEvent.WINDOW_GAINED_FOCUS + || id == WindowEvent.WINDOW_LOST_FOCUS)) + || ((mask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 + && event instanceof WindowEvent + && id == WindowEvent.WINDOW_STATE_CHANGED)) + ((AWTEventListener) getListener()).eventDispatched(event); + } + + /** + * This returns the event mask associated with this listener. + * + * @return the event mask + */ + public long getEventMask() + { + return mask; + } +} // class AWTEventListenerProxy |
