| /* 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 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 |
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| exception statement from your version. */ |
| |
| |
| package java.awt.event; |
| |
| import java.awt.AWTEvent; |
| 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 |