/*
* Copyright (c) 2010, grossmann
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the jo-widgets.org nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 jo-widgets.org 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.
*/
package org.jowidgets.tools.controller;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.Set;
import org.jowidgets.common.types.IVetoable;
import org.jowidgets.common.widgets.controller.IWindowListener;
import org.jowidgets.common.widgets.controller.IWindowObservable;
import org.jowidgets.util.Assert;
import org.jowidgets.util.ValueHolder;
public class WindowObservable implements IWindowObservable {
private final Set<IWindowListener> listeners;
public WindowObservable() {
super();
this.listeners = new LinkedHashSet<IWindowListener>();
}
@Override
public final void addWindowListener(final IWindowListener listener) {
Assert.paramNotNull(listener, "listener");
listeners.add(listener);
}
@Override
public final void removeWindowListener(final IWindowListener listener) {
Assert.paramNotNull(listener, "listener");
listeners.remove(listener);
}
public final void fireWindowActivated() {
for (final IWindowListener windowListener : new LinkedList<IWindowListener>(listeners)) {
windowListener.windowActivated();
}
}
public final void fireWindowDeactivated() {
for (final IWindowListener windowListener : new LinkedList<IWindowListener>(listeners)) {
windowListener.windowDeactivated();
}
}
public final void fireWindowIconified() {
for (final IWindowListener windowListener : new LinkedList<IWindowListener>(listeners)) {
windowListener.windowIconified();
}
}
public final void fireWindowDeiconified() {
for (final IWindowListener windowListener : new LinkedList<IWindowListener>(listeners)) {
windowListener.windowDeiconified();
}
}
public final void fireWindowClosed() {
for (final IWindowListener windowListener : new LinkedList<IWindowListener>(listeners)) {
windowListener.windowClosed();
}
}
public final void fireWindowClosing(final IVetoable vetoable) {
final ValueHolder<Boolean> veto = new ValueHolder<Boolean>(Boolean.FALSE);
final IVetoable innerVetoable = new IVetoable() {
@Override
public void veto() {
veto.set(Boolean.TRUE);
}
};
for (final IWindowListener windowListener : new LinkedList<IWindowListener>(listeners)) {
windowListener.windowClosing(innerVetoable);
if (veto.get().booleanValue()) {
vetoable.veto();
break;
}
}
}
public final boolean fireWindowClosing() {
final ValueHolder<Boolean> veto = new ValueHolder<Boolean>(Boolean.FALSE);
final IVetoable vetoable = new IVetoable() {
@Override
public void veto() {
veto.set(Boolean.TRUE);
}
};
for (final IWindowListener windowListener : new LinkedList<IWindowListener>(listeners)) {
windowListener.windowClosing(vetoable);
if (veto.get().booleanValue()) {
return true;
}
}
return false;
}
}