| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.internal; |
| |
| import org.eclipse.jface.window.Window; |
| |
| /** |
| * This handler will pass along to the workbench advisor exceptions and errors |
| * thrown while running the event loop. However, the <code>ThreadDeath</code> |
| * error is simply thrown again, and is not passed along. |
| */ |
| public final class ExceptionHandler implements Window.IExceptionHandler { |
| |
| private static final ExceptionHandler instance = new ExceptionHandler(); |
| |
| /** |
| * Returns the singleton exception handler. |
| * |
| * @return the singleton exception handler |
| */ |
| public static ExceptionHandler getInstance() { |
| return instance; |
| } |
| |
| private int exceptionCount = 0; // To avoid recursive errors |
| |
| private ExceptionHandler() { |
| // prevents instantiation |
| } |
| |
| @Override |
| public void handleException(Throwable t) { |
| try { |
| // Ignore ThreadDeath error as its normal to get this when thread dies |
| if (t instanceof ThreadDeath) { |
| throw (ThreadDeath) t; |
| } |
| |
| // Check to avoid recursive errors |
| exceptionCount++; |
| if (exceptionCount > 2) { |
| if (t instanceof RuntimeException) { |
| throw (RuntimeException) t; |
| } else if (t instanceof Error) { |
| throw (Error) t; |
| } else { |
| throw new RuntimeException(t); |
| } |
| } |
| |
| // Let the advisor handle this now |
| Workbench wb = Workbench.getInstance(); |
| if (wb != null) { |
| wb.getAdvisor().eventLoopException(t); |
| } |
| } finally { |
| exceptionCount--; |
| } |
| } |
| } |