| /******************************************************************************* |
| * Copyright (c) 2005, 2009 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| * Matthew Hall - bug 268688 |
| *******************************************************************************/ |
| package org.eclipse.jface.databinding.conformance.util; |
| |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.eclipse.core.databinding.observable.Realm; |
| |
| /** |
| * Allows for the toggling of the current status of the realm. The |
| * asyncExec(...) implementations do nothing. |
| * |
| * @since 3.2 |
| */ |
| public class CurrentRealm extends Realm { |
| private boolean current; |
| private List queue = new LinkedList(); |
| |
| public CurrentRealm() { |
| this(false); |
| } |
| |
| public CurrentRealm(boolean current) { |
| this.current = current; |
| } |
| |
| public boolean isCurrent() { |
| return current; |
| } |
| |
| public void setCurrent(boolean current) { |
| this.current = current; |
| processTasks(); |
| } |
| |
| protected void syncExec(Runnable runnable) { |
| super.syncExec(runnable); |
| } |
| |
| private void processTasks() { |
| if (isCurrent()) { |
| for (Iterator it = queue.iterator(); it.hasNext();) { |
| Runnable task = (Runnable) it.next(); |
| it.remove(); |
| safeRun(task); |
| } |
| } |
| } |
| |
| public void asyncExec(Runnable runnable) { |
| queue.add(runnable); |
| } |
| |
| protected static Realm setDefault(Realm realm) { |
| return Realm.setDefault(realm); |
| } |
| } |