| /* |
| * Copyright (c) 2012 Eike Stepper (Loehne, Germany) 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: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.net4j.util.event; |
| |
| import java.io.PrintStream; |
| |
| /** |
| * A {@link IListener listener} that dispatches throwable {@link ThrowableEvent events} to methods that can be |
| * overridden by extenders. |
| * |
| * @author Eike Stepper |
| * @since 3.3 |
| */ |
| public class ThrowableEventAdapter implements IListener |
| { |
| public ThrowableEventAdapter() |
| { |
| } |
| |
| public final void notifyEvent(IEvent event) |
| { |
| if (event instanceof ThrowableEvent) |
| { |
| ThrowableEvent e = (ThrowableEvent)event; |
| notifyLifecycleEvent(e); |
| } |
| else |
| { |
| notifyOtherEvent(event); |
| } |
| } |
| |
| protected void notifyLifecycleEvent(ThrowableEvent event) |
| { |
| onThrowable(event.getSource(), event.getThrowable()); |
| } |
| |
| protected void notifyOtherEvent(IEvent event) |
| { |
| } |
| |
| protected void onThrowable(INotifier source, Throwable t) |
| { |
| } |
| |
| /** |
| * Prints the stack traces of throwable {@link ThrowableEvent events} to a {@link PrintStream}. |
| * |
| * @author Eike Stepper |
| */ |
| public static class ToPrintStream extends ThrowableEventAdapter |
| { |
| public static final ToPrintStream CONSOLE = new ToPrintStream(System.out); |
| |
| private final PrintStream out; |
| |
| public ToPrintStream(PrintStream out) |
| { |
| this.out = out; |
| } |
| |
| public final PrintStream getOut() |
| { |
| return out; |
| } |
| |
| @Override |
| protected void onThrowable(INotifier source, Throwable t) |
| { |
| t.printStackTrace(out); |
| } |
| } |
| } |