/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ---------------
* TaskSeries.java
* ---------------
* (C) Copyright 2002-2007, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 06-Jun-2002 : Version 1 (DG);
* 07-Oct-2002 : Fixed errors reported by Checkstyle (DG);
* 24-Oct-2002 : Added methods to get TimeAllocation by task index (DG);
* 10-Jan-2003 : Renamed GanttSeries --> TaskSeries (DG);
* 30-Jul-2004 : Added equals() method (DG);
*
*/
package org.jfree.data.gantt;
import java.util.Collections;
import java.util.List;
import org.jfree.data.general.Series;
/**
* A series that contains zero, one or many {@link Task} objects.
* <P>
* This class is used as a building block for the {@link TaskSeriesCollection}
* class that can be used to construct basic Gantt charts.
*/
public class TaskSeries extends Series {
/** Storage for the tasks in the series. */
private List tasks;
/**
* Constructs a new series with the specified name.
*
* @param name the series name (<code>null</code> not permitted).
*/
public TaskSeries(String name) {
super(name);
this.tasks = new java.util.ArrayList();
}
/**
* Adds a task to the series and sends a
* {@link org.jfree.data.general.SeriesChangeEvent} to all registered
* listeners.
*
* @param task the task (<code>null</code> not permitted).
*/
public void add(Task task) {
if (task == null) {
throw new IllegalArgumentException("Null 'task' argument.");
}
this.tasks.add(task);
fireSeriesChanged();
}
/**
* Removes a task from the series and sends
* a {@link org.jfree.data.general.SeriesChangeEvent}
* to all registered listeners.
*
* @param task the task.
*/
public void remove(Task task) {
this.tasks.remove(task);
fireSeriesChanged();
}
/**
* Removes all tasks from the series and sends
* a {@link org.jfree.data.general.SeriesChangeEvent}
* to all registered listeners.
*/
public void removeAll() {
this.tasks.clear();
fireSeriesChanged();
}
/**
* Returns the number of items in the series.
*
* @return The item count.
*/
public int getItemCount() {
return this.tasks.size();
}
/**
* Returns a task from the series.
*
* @param index the task index (zero-based).
*
* @return The task.
*/
public Task get(int index) {
return (Task) this.tasks.get(index);
}
/**
* Returns the task in the series that has the specified description.
*
* @param description the name (<code>null</code> not permitted).
*
* @return The task (possibly <code>null</code>).
*/
public Task get(String description) {
Task result = null;
int count = this.tasks.size();
for (int i = 0; i < count; i++) {
Task t = (Task) this.tasks.get(i);
if (t.getDescription().equals(description)) {
result = t;
break;
}
}
return result;
}
/**
* Returns an unmodifialble list of the tasks in the series.
*
* @return The tasks.
*/
public List getTasks() {
return Collections.unmodifiableList(this.tasks);
}
/**
* Tests this object for equality with an arbitrary object.
*
* @param obj the object to test against (<code>null</code> permitted).
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof TaskSeries)) {
return false;
}
if (!super.equals(obj)) {
return false;
}
TaskSeries that = (TaskSeries) obj;
if (!this.tasks.equals(that.tasks)) {
return false;
}
return true;
}
}
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