Mercurial > hg > release > thermostat-1.0
view client/swing/src/main/java/com/redhat/thermostat/client/swing/EdtHelper.java @ 1412:a0592d702416
Update copyright year in release branch.
reviewed-by: neugens
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2014-June/009965.html
PR1821
author | Jon VanAlten <jon.vanalten@redhat.com> |
---|---|
date | Tue, 03 Jun 2014 11:55:56 -0600 |
parents | ccac9bcabaa0 |
children |
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/* * Copyright 2012-2014 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.client.swing; import java.awt.EventQueue; import java.lang.reflect.InvocationTargetException; import java.util.concurrent.Callable; import javax.swing.SwingUtilities; /** * Allows operations to be performed consistently on the Swing EDT * irrespective of whether the caller is running on the EDT or not. * * @see SwingUtilities#invokeAndWait(Runnable) * @see SwingUtilities#invokeLater(Runnable) */ public class EdtHelper { @SuppressWarnings("serial") private static class CallableException extends RuntimeException { private CallableException(Exception ex) { super(ex); } } private static class CallableWrapper<T> implements Runnable { private Callable<T> callable; private T result; private CallableWrapper(Callable<T> c) { callable = c; } @Override public void run() { try { result = callable.call(); } catch (Exception ex) { throw new CallableException(ex); } } private T getResult() { return result; } } /** * Invoke the supplied {@link Runnable} on the EDT. * @param r encapsulates the code to run * @throws InvocationTargetException encapsulates the actual exception * that occurs when executing this code. * @throws InterruptedException */ public void callAndWait(Runnable r) throws InvocationTargetException, InterruptedException { if (EventQueue.isDispatchThread()) { try { r.run(); } catch (Exception ex) { throw new InvocationTargetException(ex); } } else { EventQueue.invokeAndWait(r); } } /** * Invokes the supplied {@link Callable} on the EDT, waits until it is * finished execution and returns the result of invoking {@link Callable#call()}. * @param c encapsulates the code to execute * @return the result produce by c * @throws InvocationTargetException indicates an exception occurred when executing the callable * @throws InterruptedException */ public <T> T callAndWait(Callable<T> c) throws InvocationTargetException, InterruptedException { CallableWrapper<T> w = new CallableWrapper<>(c); callAndWait(w); return w.getResult(); } }