/*
* $Id$
* This file is a part of the Arakhne Foundation Classes, http://www.arakhne.org/afc
*
* Copyright (c) 2000-2012 Stephane GALLAND.
* Copyright (c) 2005-10, Multiagent Team, Laboratoire Systemes et Transports,
* Universite de Technologie de Belfort-Montbeliard.
* Copyright (c) 2013-2016 The original authors, and other authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.arakhne.afc.math.geometry.d3.dfx;
import java.lang.ref.WeakReference;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import org.arakhne.afc.vmutil.asserts.AssertMessages;
/**
* A JavaFX double property that depends on another property.
*
* @param <T> type of the dependency
* @author $Author: sgalland$
* @author $Author: tpiotrow$
* @version $FullVersion$
* @mavengroupid $GroupId$
* @mavenartifactid $ArtifactId$
* @since 13.0
*/
class DependentSimpleDoubleProperty<T extends ObservableValue<?>> extends SimpleDoubleProperty {
@SuppressWarnings("rawtypes")
private final Listener listener;
private WeakReference<T> dependency;
/** Construct a property.
*
* @param bean the owner of the property.
* @param name the name of the property.
* @param dependency the dependency.
*/
@SuppressWarnings("unchecked")
DependentSimpleDoubleProperty(Object bean, String name, T dependency) {
super(bean, name);
assert dependency != null : AssertMessages.notNullParameter(2);
this.dependency = new WeakReference<>(dependency);
this.listener = new Listener<>();
dependency.addListener(this.listener);
}
@Override
protected final void invalidated() {
invalidated(this.dependency.get());
}
/**
* This method be overridden to receive invalidation notifications.
*
* <p>The default implementation is empty.
*
* @param dependency the dependency.
*/
protected void invalidated(T dependency) {
//
}
/**
* A JavaFX double property that depends on another property.
*
* @param <DT> type of the data.
* @author $Author: sgalland$
* @version $FullVersion$
* @mavengroupid $GroupId$
* @mavenartifactid $ArtifactId$
* @since 13.0
*/
private class Listener<DT> implements ChangeListener<DT> {
/** Construct a listener.
*/
Listener() {
//
}
@Override
public void changed(ObservableValue<? extends DT> observable, DT oldValue, DT newValue) {
invalidated();
}
}
}