/*
* Copyright 1996-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.awt.windows;
abstract class WObjectPeer {
static {
initIDs();
}
long pData; // The Windows handle for the native widget.
Object target; // The associated AWT object.
private volatile boolean disposed;
// set from JNI if any errors in creating the peer occur
protected Error createError = null;
public static WObjectPeer getPeerForTarget(Object t) {
WObjectPeer peer = (WObjectPeer) WToolkit.targetToPeer(t);
return peer;
}
public long getData() {
return pData;
}
public Object getTarget() {
return target;
}
/*
* Subclasses should override disposeImpl() instead of dispose(). Client
* code should always invoke dispose(), never disposeImpl().
*/
abstract protected void disposeImpl();
public final void dispose() {
boolean call_disposeImpl = false;
synchronized (this) {
if (!disposed) {
disposed = call_disposeImpl = true;
}
}
if (call_disposeImpl) {
disposeImpl();
}
}
protected final boolean isDisposed() {
return disposed;
}
/**
* Initialize JNI field and method IDs
*/
private static native void initIDs();
}