bundles/runtime/org.eclipse.fx.core/src/org/eclipse/fx/core/bindings/internal/SyncObjectBinding.java

/*******************************************************************************
 * Copyright (c) 2016 BestSolution.at and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Christoph Caks<ccaks@bestsolution.at> - initial API and implementation
 *******************************************************************************/
package org.eclipse.fx.core.bindings.internal;

import org.eclipse.fx.core.ThreadSynchronize;

import javafx.beans.InvalidationListener;
import javafx.beans.binding.ObjectBinding;
import javafx.beans.value.ObservableValue;

@SuppressWarnings("javadoc")
public class SyncObjectBinding<A> extends ObjectBinding<A> {

	private ObservableValue<A> source;
	private ThreadSynchronize thread;

	private InvalidationListener onInvalidate = x -> {
		this.thread.asyncExec(()-> {
			SyncObjectBinding.this.invalidate();
		});
	};

	public SyncObjectBinding(ObservableValue<A> source, ThreadSynchronize thread) {
		this.source = source;
		this.thread = thread;

		this.source.addListener(this.onInvalidate);
	}

	@Override
	public void dispose() {
		this.source.removeListener(this.onInvalidate);
		super.dispose();
	}

	@Override
	protected A computeValue() {
		return this.source.getValue();
	}

}