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+/* 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
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