mirror of git://gcc.gnu.org/git/gcc.git
382 lines
11 KiB
Java
382 lines
11 KiB
Java
|
||
/* AWTEvent.java -- the root event in AWT
|
||
Copyright (C) 1999, 2000, 2002, 2005 Free Software Foundation
|
||
|
||
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;
|
||
|
||
import java.awt.event.ActionEvent;
|
||
import java.awt.event.AdjustmentEvent;
|
||
import java.awt.event.ComponentEvent;
|
||
import java.awt.event.ContainerEvent;
|
||
import java.awt.event.FocusEvent;
|
||
import java.awt.event.InputMethodEvent;
|
||
import java.awt.event.InvocationEvent;
|
||
import java.awt.event.ItemEvent;
|
||
import java.awt.event.KeyEvent;
|
||
import java.awt.event.MouseEvent;
|
||
import java.awt.event.PaintEvent;
|
||
import java.awt.event.TextEvent;
|
||
import java.awt.event.WindowEvent;
|
||
import java.util.EventObject;
|
||
|
||
/**
|
||
* AWTEvent is the root event class for all AWT events in the JDK 1.1 event
|
||
* model. It supersedes the Event class from JDK 1.0. Subclasses outside of
|
||
* the java.awt package should have IDs greater than RESERVED_ID_MAX.
|
||
*
|
||
* <p>Event masks defined here are used by components in
|
||
* <code>enableEvents</code> to select event types not selected by registered
|
||
* listeners. Event masks are appropriately set when registering on
|
||
* components.
|
||
*
|
||
* @author Warren Levy (warrenl@cygnus.com)
|
||
* @author Aaron M. Renn (arenn@urbanophile.com)
|
||
* @since 1.1
|
||
* @status updated to 1.4
|
||
*/
|
||
public abstract class AWTEvent extends EventObject
|
||
{
|
||
/**
|
||
* Compatible with JDK 1.1+.
|
||
*/
|
||
private static final long serialVersionUID = -1825314779160409405L;
|
||
|
||
/**
|
||
* The ID of the event.
|
||
*
|
||
* @see #getID()
|
||
* @see #AWTEvent(Object, int)
|
||
* @serial the identifier number of this event
|
||
*/
|
||
protected int id;
|
||
|
||
/**
|
||
* Indicates if the event has been consumed. False mean it is passed to
|
||
* the peer, true means it has already been processed. Semantic events
|
||
* generated by low-level events always have the value true.
|
||
*
|
||
* @see #consume()
|
||
* @see #isConsumed()
|
||
* @serial whether the event has been consumed
|
||
*/
|
||
protected boolean consumed;
|
||
|
||
/**
|
||
* Who knows? It's in the serial version.
|
||
*
|
||
* @serial No idea what this is for.
|
||
*/
|
||
byte[] bdata;
|
||
|
||
/** Mask for selecting component events. */
|
||
public static final long COMPONENT_EVENT_MASK = 0x00001;
|
||
|
||
/** Mask for selecting container events. */
|
||
public static final long CONTAINER_EVENT_MASK = 0x00002;
|
||
|
||
/** Mask for selecting component focus events. */
|
||
public static final long FOCUS_EVENT_MASK = 0x00004;
|
||
|
||
/** Mask for selecting keyboard events. */
|
||
public static final long KEY_EVENT_MASK = 0x00008;
|
||
|
||
/** Mask for mouse button events. */
|
||
public static final long MOUSE_EVENT_MASK = 0x00010;
|
||
|
||
/** Mask for mouse motion events. */
|
||
public static final long MOUSE_MOTION_EVENT_MASK = 0x00020;
|
||
|
||
/** Mask for window events. */
|
||
public static final long WINDOW_EVENT_MASK = 0x00040;
|
||
|
||
/** Mask for action events. */
|
||
public static final long ACTION_EVENT_MASK = 0x00080;
|
||
|
||
/** Mask for adjustment events. */
|
||
public static final long ADJUSTMENT_EVENT_MASK = 0x00100;
|
||
|
||
/** Mask for item events. */
|
||
public static final long ITEM_EVENT_MASK = 0x00200;
|
||
|
||
/** Mask for text events. */
|
||
public static final long TEXT_EVENT_MASK = 0x00400;
|
||
|
||
/**
|
||
* Mask for input method events.
|
||
* @since 1.3
|
||
*/
|
||
public static final long INPUT_METHOD_EVENT_MASK = 0x00800;
|
||
|
||
/**
|
||
* Mask if input methods are enabled. Package visible only.
|
||
*/
|
||
static final long INPUT_ENABLED_EVENT_MASK = 0x01000;
|
||
|
||
/**
|
||
* Mask for paint events.
|
||
* @since 1.3
|
||
*/
|
||
public static final long PAINT_EVENT_MASK = 0x02000;
|
||
|
||
/**
|
||
* Mask for invocation events.
|
||
* @since 1.3
|
||
*/
|
||
public static final long INVOCATION_EVENT_MASK = 0x04000;
|
||
|
||
/**
|
||
* Mask for hierarchy events.
|
||
* @since 1.3
|
||
*/
|
||
public static final long HIERARCHY_EVENT_MASK = 0x08000;
|
||
|
||
/**
|
||
* Mask for hierarchy bounds events.
|
||
* @since 1.3
|
||
*/
|
||
public static final long HIERARCHY_BOUNDS_EVENT_MASK = 0x10000;
|
||
|
||
/**
|
||
* Mask for mouse wheel events.
|
||
* @since 1.4
|
||
*/
|
||
public static final long MOUSE_WHEEL_EVENT_MASK = 0x20000;
|
||
|
||
/**
|
||
* Mask for window state events.
|
||
* @since 1.4
|
||
*/
|
||
public static final long WINDOW_STATE_EVENT_MASK = 0x40000;
|
||
|
||
/**
|
||
* Mask for window focus events.
|
||
* @since 1.4
|
||
*/
|
||
public static final long WINDOW_FOCUS_EVENT_MASK = 0x80000;
|
||
|
||
/**
|
||
* This is the highest number for event ids that are reserved for use by
|
||
* the AWT system itself. Subclasses outside of java.awt should use higher
|
||
* ids.
|
||
*/
|
||
public static final int RESERVED_ID_MAX = 1999;
|
||
|
||
|
||
/**
|
||
* Initializes a new AWTEvent from the old Java 1.0 event object.
|
||
*
|
||
* @param event the old-style event
|
||
* @throws NullPointerException if event is null
|
||
*/
|
||
public AWTEvent(Event event)
|
||
{
|
||
this(event.target, event.id);
|
||
consumed = event.consumed;
|
||
}
|
||
|
||
/**
|
||
* Create an event on the specified source object and id.
|
||
*
|
||
* @param source the object that caused the event
|
||
* @param id the event id
|
||
* @throws IllegalArgumentException if source is null
|
||
*/
|
||
public AWTEvent(Object source, int id)
|
||
{
|
||
super(source);
|
||
this.id = id;
|
||
}
|
||
|
||
/**
|
||
* Retarget the event, such as converting a heavyweight component to a
|
||
* lightweight child of the original. This is not for general use, but
|
||
* is for event targeting systems like KeyboardFocusManager.
|
||
*
|
||
* @param source the new source
|
||
*/
|
||
public void setSource(Object source)
|
||
{
|
||
this.source = source;
|
||
}
|
||
|
||
/**
|
||
* Returns the event type id.
|
||
*
|
||
* @return the id number of this event
|
||
*/
|
||
public int getID()
|
||
{
|
||
return id;
|
||
}
|
||
|
||
/**
|
||
* Create a string that represents this event in the format
|
||
* <code>classname[eventstring] on sourcecomponentname</code>.
|
||
*
|
||
* @return a string representing this event
|
||
*/
|
||
public String toString ()
|
||
{
|
||
String string = getClass ().getName () + "[" + paramString () + "] on "
|
||
+ source;
|
||
|
||
return string;
|
||
}
|
||
|
||
/**
|
||
* Returns a string representation of the state of this event. It may be
|
||
* empty, but must not be null; it is implementation defined.
|
||
*
|
||
* @return a string representation of this event
|
||
*/
|
||
public String paramString()
|
||
{
|
||
return "";
|
||
}
|
||
|
||
/**
|
||
* Consumes this event so that it will not be processed in the default
|
||
* manner.
|
||
*/
|
||
protected void consume()
|
||
{
|
||
consumed = true;
|
||
}
|
||
|
||
/**
|
||
* Tests whether not not this event has been consumed. A consumed event
|
||
* is not processed in the default manner.
|
||
*
|
||
* @return true if this event has been consumed
|
||
*/
|
||
protected boolean isConsumed()
|
||
{
|
||
return consumed;
|
||
}
|
||
|
||
/**
|
||
* Converts an event id to the appropriate event mask.
|
||
*
|
||
* @param id the event id
|
||
*
|
||
* @return the event mask for the specified id
|
||
*/
|
||
static long eventIdToMask(int id)
|
||
{
|
||
long mask = 0;
|
||
switch (id)
|
||
{
|
||
case ActionEvent.ACTION_PERFORMED:
|
||
mask = ACTION_EVENT_MASK;
|
||
break;
|
||
case AdjustmentEvent.ADJUSTMENT_VALUE_CHANGED:
|
||
mask = ADJUSTMENT_EVENT_MASK;
|
||
break;
|
||
case ComponentEvent.COMPONENT_MOVED:
|
||
case ComponentEvent.COMPONENT_RESIZED:
|
||
case ComponentEvent.COMPONENT_SHOWN:
|
||
case ComponentEvent.COMPONENT_HIDDEN:
|
||
mask = COMPONENT_EVENT_MASK;
|
||
break;
|
||
case ContainerEvent.COMPONENT_ADDED:
|
||
case ContainerEvent.COMPONENT_REMOVED:
|
||
mask = CONTAINER_EVENT_MASK;
|
||
break;
|
||
case FocusEvent.FOCUS_GAINED:
|
||
case FocusEvent.FOCUS_LOST:
|
||
mask = FOCUS_EVENT_MASK;
|
||
break;
|
||
case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
|
||
case InputMethodEvent.CARET_POSITION_CHANGED:
|
||
mask = INPUT_METHOD_EVENT_MASK;
|
||
break;
|
||
case InvocationEvent.INVOCATION_DEFAULT:
|
||
mask = INVOCATION_EVENT_MASK;
|
||
break;
|
||
case ItemEvent.ITEM_STATE_CHANGED:
|
||
mask = ITEM_EVENT_MASK;
|
||
break;
|
||
case KeyEvent.KEY_TYPED:
|
||
case KeyEvent.KEY_PRESSED:
|
||
case KeyEvent.KEY_RELEASED:
|
||
mask = KEY_EVENT_MASK;
|
||
break;
|
||
case MouseEvent.MOUSE_CLICKED:
|
||
case MouseEvent.MOUSE_PRESSED:
|
||
case MouseEvent.MOUSE_RELEASED:
|
||
mask = MOUSE_EVENT_MASK;
|
||
break;
|
||
case MouseEvent.MOUSE_MOVED:
|
||
case MouseEvent.MOUSE_ENTERED:
|
||
case MouseEvent.MOUSE_EXITED:
|
||
case MouseEvent.MOUSE_DRAGGED:
|
||
mask = MOUSE_MOTION_EVENT_MASK;
|
||
break;
|
||
case MouseEvent.MOUSE_WHEEL:
|
||
mask = MOUSE_WHEEL_EVENT_MASK;
|
||
break;
|
||
case PaintEvent.PAINT:
|
||
case PaintEvent.UPDATE:
|
||
mask = PAINT_EVENT_MASK;
|
||
break;
|
||
case TextEvent.TEXT_VALUE_CHANGED:
|
||
mask = TEXT_EVENT_MASK;
|
||
break;
|
||
case WindowEvent.WINDOW_OPENED:
|
||
case WindowEvent.WINDOW_CLOSING:
|
||
case WindowEvent.WINDOW_CLOSED:
|
||
case WindowEvent.WINDOW_ICONIFIED:
|
||
case WindowEvent.WINDOW_DEICONIFIED:
|
||
case WindowEvent.WINDOW_ACTIVATED:
|
||
case WindowEvent.WINDOW_DEACTIVATED:
|
||
mask = WINDOW_EVENT_MASK;
|
||
break;
|
||
case WindowEvent.WINDOW_GAINED_FOCUS:
|
||
case WindowEvent.WINDOW_LOST_FOCUS:
|
||
mask = WINDOW_FOCUS_EVENT_MASK;
|
||
break;
|
||
case WindowEvent.WINDOW_STATE_CHANGED:
|
||
mask = WINDOW_STATE_EVENT_MASK;
|
||
break;
|
||
default:
|
||
mask = 0;
|
||
}
|
||
return mask;
|
||
}
|
||
} // class AWTEvent
|