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/*******************************************************************************
* Copyright (c) 2004 - 2005 University Of British Columbia 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:
* University Of British Columbia - initial API and implementation
*******************************************************************************/
/*
* Created on Dec 26, 2004
*/
package org.eclipse.mylar.tasklist.internal;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.mylar.core.MylarPlugin;
import org.eclipse.mylar.core.util.ErrorLogger;
import org.eclipse.mylar.tasklist.IQuery;
import org.eclipse.mylar.tasklist.ITask;
import org.eclipse.mylar.tasklist.ITaskActivityListener;
import org.eclipse.mylar.tasklist.ITaskCategory;
import org.eclipse.mylar.tasklist.MylarTaskListPlugin;
/**
* @author Mik Kersten
*/
public class TaskListManager {
private Map<ITask, TaskActivityTimer> timerMap = new HashMap<ITask, TaskActivityTimer>();
private List<ITaskActivityListener> listeners = new ArrayList<ITaskActivityListener>();
private TaskListWriter taskListWriter;
private File taskListFile;
private TaskList taskList = new TaskList();
private boolean taskListRead = false;
private int nextTaskId;
private static final String PREFIX_TASK = "task-";
public TaskListManager(TaskListWriter taskListWriter, File file, int startId) {
this.taskListFile = file;
this.taskListWriter = taskListWriter;
this.nextTaskId = startId;
}
public TaskList createNewTaskList() {
taskList = new TaskList();
return taskList;
}
public String genUniqueTaskHandle() {
return PREFIX_TASK + nextTaskId++;
}
public boolean readTaskList() {
try {
if (taskListFile.exists()) {
taskListWriter.readTaskList(taskList, taskListFile);
int maxHandle = taskList.findLargestTaskHandle();
if (maxHandle >= nextTaskId) {
nextTaskId = maxHandle + 1;
}
for (ITaskActivityListener listener : listeners) listener.tasksActivated(taskList.getActiveTasks());
} else {
createNewTaskList();
}
taskListRead = true;
for (ITaskActivityListener listener : listeners) listener.tasklistRead();
} catch (Exception e) {
ErrorLogger.log(e, "Could not read task list");
return false;
}
return true;
}
public void saveTaskList() {
try {
taskListWriter.writeTaskList(taskList, taskListFile);
MylarPlugin.getDefault().getPreferenceStore().setValue(MylarTaskListPlugin.TASK_ID, nextTaskId);
} catch (Exception e) {
ErrorLogger.fail(e, "Could not save task list", true);
}
}
public TaskList getTaskList() {
return taskList;
}
public void setTaskList(TaskList taskList) {
this.taskList = taskList;
}
public void moveToRoot(ITask task) {
if (task.getCategory() instanceof TaskCategory) {
((TaskCategory)task.getCategory()).removeTask(task);
}
task.setCategory(null);
if (!taskList.getRootTasks().contains(task)) taskList.addRootTask(task);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void moveToCategory(TaskCategory category, ITask task) {
taskList.removeRootTask(task);
if (task.getCategory() instanceof TaskCategory) {
((TaskCategory)task.getCategory()).removeTask(task);
}
if (!category.getChildren().contains(task)) {
category.addTask(task);
}
task.setCategory(category);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void addCategory(ITaskCategory cat) {
taskList.addCategory(cat);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void removeFromCategoryAndRoot(TaskCategory category, ITask task) {
category.removeTask(task);
taskList.addRootTask(task);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void addQuery(IQuery cat) {
taskList.addQuery(cat);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void deleteTask(ITask task) {
TaskActivityTimer taskTimer = timerMap.remove(task);
if (taskTimer != null) taskTimer.stopTimer();
taskList.setActive(task, false);
taskList.deleteTask(task);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void deleteCategory(ITaskCategory cat) {
taskList.deleteCategory(cat);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void deleteQuery(IQuery query) {
taskList.deleteQuery(query);
for (ITaskActivityListener listener : listeners) listener.tasklistModified();
}
public void addListener(ITaskActivityListener listener) {
listeners.add(listener);
}
public void removeListener(ITaskActivityListener listener) {
listeners.remove(listener);
}
/**
* Deactivates previously active tasks if not in multiple active mode.
* @param task
*/
public void activateTask(ITask task) {
if (!MylarTaskListPlugin.getDefault().isMultipleActiveTasksMode()) {
for (ITask activeTask : new ArrayList<ITask>(taskList.getActiveTasks())) {
deactivateTask(activeTask);
}
}
taskList.setActive(task, true);
int timeout = MylarPlugin.getContextManager().getInactivityTimeout();
TaskActivityTimer activityTimer = new TaskActivityTimer(task, timeout);
activityTimer.startTimer();
timerMap.put(task, activityTimer);
for (ITaskActivityListener listener : listeners) listener.taskActivated(task);
}
public void deactivateTask(ITask task) {
TaskActivityTimer taskTimer = timerMap.remove(task);
if (taskTimer != null) taskTimer.stopTimer();
taskList.setActive(task, false);
for (ITaskActivityListener listener : listeners) listener.taskDeactivated(task);
}
/**
* TODO: refactor into task deltas?
*/
public void notifyTaskChanged(ITask task) {
for (ITaskActivityListener listener : listeners) listener.taskChanged(task);
}
public void setTaskListFile(File f) {
this.taskListFile = f;
}
public ITask getTaskForHandle(String handle, boolean lookInArchives) {
if (handle == null)
return null;
return taskList.getTaskForHandle(handle, lookInArchives);
}
public boolean isTaskListRead() {
return taskListRead;
}
public TaskListWriter getTaskListWriter() {
return taskListWriter;
}
public File getTaskListFile() {
return taskListFile;
}
/**
* Public for testing
*/
public Map<ITask, TaskActivityTimer> getTimerMap() {
return timerMap;
}
}
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