| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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 |
| * Chris Gross (schtoo@schtoo.com) - support for ISafeRunnableRunner added |
| * (bug 49497 [RCP] JFace dependency on org.eclipse.core.runtime enlarges standalone JFace applications) |
| *******************************************************************************/ |
| package org.eclipse.jface.util; |
| |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.OperationCanceledException; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.resource.JFaceResources; |
| |
| /** |
| * Implements a default implementation of ISafeRunnable. |
| * The default implementation of <code>handleException</code> |
| * opens a message dialog. |
| * <p><b>Note:<b> This class can open an error dialog and should not |
| * be used outside of the UI Thread.</p> |
| */ |
| public abstract class SafeRunnable implements ISafeRunnable { |
| |
| private static boolean ignoreErrors = false; |
| |
| private static ISafeRunnableRunner runner; |
| |
| private String message; |
| |
| /** |
| * Creates a new instance of SafeRunnable with a default error message. |
| */ |
| public SafeRunnable() { |
| // do nothing |
| } |
| |
| /** |
| * Creates a new instance of SafeRunnable with the given error message. |
| * |
| * @param message the error message to use |
| */ |
| public SafeRunnable(String message) { |
| this.message = message; |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on ISafeRunnable. |
| */ |
| public void handleException(Throwable e) { |
| // Workaround to avoid interactive error dialogs during automated testing |
| if (!ignoreErrors) { |
| if (message == null) |
| message = JFaceResources.getString("SafeRunnable.errorMessage"); //$NON-NLS-1$ |
| MessageDialog.openError(null, |
| JFaceResources.getString("Error"), message); //$NON-NLS-1$ |
| } |
| } |
| |
| /** |
| * Flag to avoid interactive error dialogs during automated testing. |
| * @deprecated use getIgnoreErrors() |
| */ |
| public static boolean getIgnoreErrors(boolean flag) { |
| return ignoreErrors; |
| } |
| |
| /** |
| * Flag to avoid interactive error dialogs during automated testing. |
| * |
| * @since 3.0 |
| */ |
| public static boolean getIgnoreErrors() { |
| return ignoreErrors; |
| } |
| |
| /** |
| * Flag to avoid interactive error dialogs during automated testing. |
| */ |
| public static void setIgnoreErrors(boolean flag) { |
| ignoreErrors = flag; |
| } |
| |
| /** |
| * Returns the safe runnable runner. |
| * |
| * @return the safe runnable runner |
| * |
| * @since 3.1 |
| */ |
| public static ISafeRunnableRunner getRunner() { |
| if (runner == null) { |
| runner = createDefaultRunner(); |
| } |
| return runner; |
| } |
| |
| /** |
| * Creates the default safe runnable runner. |
| * |
| * @return the default safe runnable runner |
| * @since 3.1 |
| */ |
| private static ISafeRunnableRunner createDefaultRunner() { |
| return new ISafeRunnableRunner() { |
| public void run(ISafeRunnable code) { |
| try { |
| code.run(); |
| } catch (Exception e) { |
| handleException(code, e); |
| } catch (LinkageError e) { |
| handleException(code, e); |
| } |
| } |
| |
| private void handleException(ISafeRunnable code, Throwable e) { |
| if (!(e instanceof OperationCanceledException)) { |
| e.printStackTrace(); |
| } |
| code.handleException(e); |
| } |
| }; |
| } |
| |
| /** |
| * Sets the safe runnable runner. |
| * |
| * @param runner the runner to set, or <code>null</code> to reset to the default runner |
| * @since 3.1 |
| */ |
| public static void setRunner(ISafeRunnableRunner runner) { |
| SafeRunnable.runner = runner; |
| } |
| |
| /** |
| * Runs the given safe runnable using the safe runnable runner. |
| * This is a convenience method, equivalent to: |
| * <code>SafeRunnable.getRunner().run(runnable)</code>. |
| * |
| * @param runnable the runnable to run |
| * @since 3.1 |
| */ |
| public static void run(ISafeRunnable runnable) { |
| getRunner().run(runnable); |
| } |
| |
| } |