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/*******************************************************************************
* Copyright (c) 2004 - 2006 Mylar committers 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
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.mylyn.internal.tasks.ui.actions.TaskActivateAction;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskActivationHistory;
import org.eclipse.mylyn.tasks.core.AbstractTask;
import org.eclipse.mylyn.tasks.ui.TasksUiPlugin;
/**
* @author Eugene Kuleshov
*/
public class TaskHistoryHandler extends AbstractHandler {
public Object execute(ExecutionEvent event) throws ExecutionException {
TaskActivationHistory taskHistory = TasksUiPlugin.getTaskListManager().getTaskActivationHistory();
if (taskHistory.hasPrevious()) {
AbstractTask previousTask = taskHistory.getPreviousTask();
new TaskActivateAction().run(previousTask);
}
return null;
}
}
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