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/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.nativewindow.awt;
import java.awt.Component;
import java.awt.Window;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import javax.media.nativewindow.WindowClosingProtocol;
import jogamp.nativewindow.awt.AWTMisc;
public class AWTWindowClosingProtocol implements WindowClosingProtocol {
private Component comp;
private Runnable closingOperation;
private volatile boolean closingListenerSet = false;
private Object closingListenerLock = new Object();
private int defaultCloseOperation = DISPOSE_ON_CLOSE;
private boolean defaultCloseOperationSetByUser = false;
public AWTWindowClosingProtocol(Component comp, Runnable closingOperation) {
this.comp = comp;
this.closingOperation = closingOperation;
}
class WindowClosingAdapter extends WindowAdapter {
@Override
public void windowClosing(WindowEvent e) {
int op = AWTWindowClosingProtocol.this.getDefaultCloseOperation();
if( DISPOSE_ON_CLOSE == op ) {
// we have to issue this call right away,
// otherwise the window gets destroyed
closingOperation.run();
}
}
}
WindowListener windowClosingAdapter = new WindowClosingAdapter();
final boolean addClosingListenerImpl() {
Window w = AWTMisc.getWindow(comp);
if(null!=w) {
w.addWindowListener(windowClosingAdapter);
return true;
}
return false;
}
/**
* Adds this closing listener to the components Window if exist and only one time.<br>
* Hence you may call this method every time to ensure it has been set,
* ie in case the Window parent is not available yet.
*
* @return
*/
public final boolean addClosingListenerOneShot() {
if(!closingListenerSet) { // volatile: ok
synchronized(closingListenerLock) {
if(!closingListenerSet) {
closingListenerSet=addClosingListenerImpl();
return closingListenerSet;
}
}
}
return false;
}
public final boolean removeClosingListener() {
if(closingListenerSet) { // volatile: ok
synchronized(closingListenerLock) {
if(closingListenerSet) {
Window w = AWTMisc.getWindow(comp);
if(null!=w) {
w.removeWindowListener(windowClosingAdapter);
closingListenerSet = false;
return true;
}
}
}
}
return false;
}
/**
*
* @return the user set close operation if set by {@link #setDefaultCloseOperation(int) setDefaultCloseOperation(int)},
* otherwise return the AWT/Swing close operation value translated to
* a {@link WindowClosingProtocol} value .
*/
public final int getDefaultCloseOperation() {
int op = -1;
synchronized(closingListenerLock) {
if(defaultCloseOperationSetByUser) {
op = defaultCloseOperation;
}
}
if(0 <= op) {
return op;
}
// User didn't determine the behavior, use underlying AWT behavior
return AWTMisc.getNWClosingOperation(comp);
}
public final int setDefaultCloseOperation(int op) {
synchronized(closingListenerLock) {
int _op = defaultCloseOperation;
defaultCloseOperation = op;
defaultCloseOperationSetByUser = true;
return _op;
}
}
}
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