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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 22, 2004
*/
package org.eclipse.mylar.tasks.internal;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.mylar.tasks.AbstractCategory;
import org.eclipse.mylar.tasks.ITask;
/**
* @author Mik Kersten
*/
public class TaskList implements Serializable {
private static final long serialVersionUID = 3618984485791021105L;
private List<ITask> rootTasks = new ArrayList<ITask>();
private List<AbstractCategory> categories = new ArrayList<AbstractCategory>();
private transient List<ITask> activeTasks = new ArrayList<ITask>();
public void addRootTask(ITask task) {
rootTasks.add(task);
}
public void addCategory(AbstractCategory cat) {
categories.add(cat);
}
public void setActive(ITask task, boolean active) {
task.setActive(active);
if (active) {
activeTasks.add(task);
} else {
activeTasks.remove(task);
}
}
public void deleteTask(ITask task) {
boolean deleted = deleteTaskHelper(rootTasks, task);
if (!deleted) {
for (TaskCategory cat : getTaskCategories()) {
deleted = deleteTaskHelper(cat.getChildren(), task);
if (deleted) {
return;
}
}
}
}
private boolean deleteTaskHelper(List<ITask> tasks, ITask t) {
for (ITask task : tasks) {
if (task.getHandle().equals(t.getHandle())) {
tasks.remove(task);
return true;
} else {
if (deleteTaskHelper(task.getChildren(), t))
return true;
}
}
return false;
}
public void deleteCategory(AbstractCategory category) {
categories.remove(category);
}
/**
* TODO: make data structure handle this traversal
*/
public ITask getTaskForId(String id) {
ITask t = null;
for (TaskCategory cat : getTaskCategories()) {
if ((t = findTaskHelper(cat.getChildren(), id)) != null) {
return t;
}
}
return findTaskHelper(rootTasks, id);
}
private ITask findTaskHelper(List<ITask> tasks, String id) {
for (ITask task : tasks) {
if (task.getHandle() == id) {
return task;
}
ITask t = findTaskHelper(task.getChildren(), id);
if (t != null) {
return t;
}
}
return null;
}
public List<ITask> getActiveTasks() {
return activeTasks;
}
public List<ITask> getRootTasks() {
return rootTasks;
}
public List<AbstractCategory> getCategories() {
return categories;
}
public int findLargestTaskHandle() {
int max = 0;
max = Math.max(largestTaskHandleHelper(rootTasks), max);
for (TaskCategory cat : getTaskCategories()) {
max = Math.max(largestTaskHandleHelper(cat.getChildren()), max);
}
return max;
}
private int largestTaskHandleHelper(List<ITask> tasks) {
int ihandle = 0;
int max = 0;
for (ITask t : tasks) {
if(t.participatesInTaskHandles()) {
String string = t.getHandle().substring(t.getHandle().indexOf('-')+1, t.getHandle().length());
if (string != "") {
ihandle = Integer.parseInt(string);
}
}
max = Math.max(ihandle, max);
ihandle = largestTaskHandleHelper(t.getChildren());
max = Math.max(ihandle, max);
}
return max;
}
public List<Object> getRoots() {
List<Object> roots = new ArrayList<Object>();
for (ITask t : rootTasks) {
roots.add(t);
}
for (AbstractCategory cat : categories) {
roots.add(cat);
}
return roots;
}
public void createCategory(String description) {
TaskCategory c = new TaskCategory(description);
categories.add(c);
}
public List<TaskCategory> getTaskCategories() {
List<TaskCategory> cats = new ArrayList<TaskCategory>();
for (AbstractCategory cat : categories) {
if (cat instanceof TaskCategory) {
cats.add((TaskCategory)cat);
}
}
return cats;
}
public void clear() {
activeTasks.clear();
categories.clear();
rootTasks.clear();
}
}
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