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/*******************************************************************************
* Copyright (c) 2004 - 2006 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
*******************************************************************************/
package org.eclipse.mylyn.tasks.core;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.mylyn.tasks.core.AbstractTask.PriorityLevel;
/**
* Top-level Task List element that can contain other Task List elements.
*
* @author Mik Kersten
* @since 2.0
*/
public abstract class AbstractTaskContainer extends PlatformObject implements Comparable<AbstractTaskContainer> {
private String handleIdentifier = "";
private Set<AbstractTask> children = new CopyOnWriteArraySet<AbstractTask>();
/**
* Optional URL corresponding to the web resource associated with this container.
*/
protected String url = null;
public AbstractTaskContainer(String handleAndDescription) {
assert handleIdentifier != null;
this.handleIdentifier = handleAndDescription;
}
/**
* Use {@link TaskList} methods instead.
*/
public void internalAddChild(AbstractTask task) {
children.add(task);
}
/**
* Use {@link TaskList} methods instead.
*/
public void internalRemoveChild(AbstractTask task) {
children.remove(task);
}
/**
* Does not delete tasks from TaskList
*/
public void clear() {
children.clear();
}
public Set<AbstractTask> getChildren() {
return Collections.unmodifiableSet(children);
}
public boolean contains(String handle) {
for (AbstractTask child : children) {
if (handle.equals(child.getHandleIdentifier())) {
return true;
}
}
return false;
}
public String getSummary() {
return handleIdentifier;
}
public boolean isEmpty() {
return children.isEmpty();
}
public String getHandleIdentifier() {
return handleIdentifier;
}
public void setHandleIdentifier(String handleIdentifier) {
this.handleIdentifier = handleIdentifier;
}
@Override
public int hashCode() {
return handleIdentifier.hashCode();
}
public void setUrl(String url) {
this.url = url;
}
/**
* @return can be null
*/
public String getUrl() {
return url;
}
@Override
public boolean equals(Object object) {
if (object == null)
return false;
if (object instanceof AbstractTaskContainer) {
AbstractTaskContainer compare = (AbstractTaskContainer) object;
return this.getHandleIdentifier().equals(compare.getHandleIdentifier());
} else {
return false;
}
}
@Override
public String toString() {
return "container: " + handleIdentifier;
}
public String getPriority() {
String highestPriority = PriorityLevel.P5.toString();
Set<AbstractTask> tasks = getChildren();
if (tasks.isEmpty()) {
return PriorityLevel.P1.toString();
}
for (AbstractTask task : tasks) {
if (highestPriority.compareTo(task.getPriority()) > 0) {
highestPriority = task.getPriority();
}
}
return highestPriority;
}
/**
* The handle for most containers is their summary. Override to specify a different natural ordering.
*/
public int compareTo(AbstractTaskContainer taskListElement) {
return getHandleIdentifier().compareTo(((AbstractTaskContainer) taskListElement).getHandleIdentifier());
}
}
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