| /******************************************************************************* |
| * Copyright (c) 2008 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 |
| ******************************************************************************/ |
| |
| package org.eclipse.ui.application; |
| |
| import org.eclipse.ui.internal.UISynchronizer; |
| |
| /** |
| * This class provides static methods that help RCP applications interact with |
| * the Display. |
| * |
| * @since 3.4 |
| */ |
| public final class DisplayAccess { |
| |
| /** |
| * <p> |
| * This method allows threads spawned early in the workbench startup process |
| * to access the Display via the |
| * {@link org.eclipse.swt.widgets.Display#asyncExec(Runnable)} and |
| * {@link org.eclipse.swt.widgets.Display#syncExec(Runnable)} methods. |
| * Without invoking this method from a given thread subsequent calls to the |
| * above Display methods will behave as follows: |
| * </p> |
| * |
| * <ul> |
| * <li>runnables posted to |
| * {@link org.eclipse.swt.widgets.Display#asyncExec(Runnable)} will not be |
| * invoked until after the Workbench is fully restored.</li> |
| * <li>calls made to |
| * {@link org.eclipse.swt.widgets.Display#syncExec(Runnable)} will block |
| * until the Workbench is fully restored.</li> |
| * </ul> |
| * |
| * <p> |
| * This method MUST NOT be called from threads created by the workbench. If |
| * invoked from any thread owned by the Workbench this method will throw an |
| * {@link IllegalStateException}. |
| * </p> |
| * |
| * <p> |
| * It is recommended that this method be used from ALL threads that touch |
| * the display during the startup process, even those that may have been |
| * created in the main application class. |
| * </p> |
| * |
| * <p> |
| * This method has no effect after the workbench has been restored. |
| * </p> |
| * |
| * @throws IllegalStateException |
| * thrown if invoked from a thread created by the workbench. |
| */ |
| public static void accessDisplayDuringStartup() { |
| UISynchronizer.overrideThread.set(Boolean.TRUE); |
| } |
| } |