/*******************************************************************************
 * Copyright (c) 2007 VTT Technical Research Centre of Finland 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:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.utils.threads;

import java.util.concurrent.Executor;

import org.eclipse.swt.widgets.Display;

public class Executors2 {

	public static Executor createSWTExecutor(Display display, boolean async) {
		return async ? new SWTExecutorAsync(display) : new SWTExecutorSync(display);
	}
	
}

class SWTExecutorAsync implements Executor {
	
	Display display;
	public SWTExecutorAsync(Display display)
	{
		this.display = display;
	}
	
	@Override
	public void execute(Runnable command) {
		// Don't accept work if the SWT thread is disposed.
		if (display.isDisposed()) 
			throw new RuntimeException("The SWT thread has been disposed"); 
		display.asyncExec(command);
	}
	
}

class SWTExecutorSync implements Executor {
	
	Display display;
	public SWTExecutorSync(Display display)
	{
		this.display = display;
	}
	
	@Override
	public void execute(Runnable command) {
		// Don't accept work if the SWT thread is disposed.
		if (display.isDisposed()) 
			throw new RuntimeException("The SWT thread has been disposed"); 
		display.syncExec(command);
	}
	
}