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/*******************************************************************************
* Copyright (c) 2004, 2008 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.tasks.core;
import java.util.Calendar;
import java.util.Set;
import org.eclipse.mylyn.internal.tasks.core.AbstractTask;
/**
* @author Rob Elves
* @since 3.0
*/
public interface ITaskActivityManager {
/**
* activate the given <code>task</code>
*/
public abstract void activateTask(ITask task);
/**
* deactivate the currently active task (if any). There are no negative side effects if this method is called when
* no task is active
*/
public abstract void deactivateActiveTask();
/**
* deactivate the given task
*/
public abstract void deactivateTask(ITask task);
/**
* returns all tasks that where active between <code>start</code> and <code>end</end> (exclusive)
* both ranges are floored to the hour
*/
public abstract Set<AbstractTask> getActiveTasks(Calendar start, Calendar end);
/**
* @return the currently active task if any
*/
public abstract ITask getActiveTask();
/**
* returns all tasks with a due date set
*/
public abstract Set<ITask> getAllDueTasks();
/**
* returns all tasks due between the given dates
*/
public abstract Set<ITask> getDueTasks(Calendar start, Calendar end);
/** total elapsed time based on activation history */
public abstract long getElapsedTime(ITask task);
/**
* return the total elapsed time based on activation history between <code>start</code> and <code>end</code> If task
* is null, the elapsed time for the range with no task active is returned
*/
public abstract long getElapsedTime(ITask task, Calendar start, Calendar end);
public abstract void addActivityListener(ITaskActivityListener listener);
public abstract void removeActivityListener(ITaskActivityListener listener);
public abstract void addActivationListener(ITaskActivationListener listener);
public abstract void removeActivationListener(ITaskActivationListener listener);
/**
* @param task
* cannot be null
* @return whether the task is the single currently active task
*/
public abstract boolean isActive(ITask task);
}
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