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/*****************************************************************************
* Copyright (c) 2008 CEA LIST.
*
*
* 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:
* Chokri Mraidha (CEA LIST) Chokri.Mraidha@cea.fr - Initial API and implementation
* Patrick Tessier (CEA LIST) Patrick.Tessier@cea.fr - modification
*
*****************************************************************************/
package org.eclipse.papyrus.uml.profile.ui.dialogs;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
/**
* The Class ElementList.
*
* @author Remi Schnekenburger
*/
public class ElementList {
/**
* The elements.
*/
private ArrayList elements = new ArrayList();
/**
* The change listeners.
*/
private Set changeListeners = new HashSet();
/**
* Constructor.
*/
public ElementList() {
this.initData();
}
/**
* initialize the list of elements.
*/
protected void initData() {
}
/**
* Return the collection of tasks.
*
* @return the elements
*/
public ArrayList getElements() {
return elements;
}
/**
* Add a new element to the collection of selected elements.
*
* @param element
* the element
*/
public void addElement(Object element) {
elements.add(elements.size(), element);
Iterator iterator = changeListeners.iterator();
while (iterator.hasNext()) {
((IListViewer) iterator.next()).addElement(element);
}
}
/**
* Removes the element.
*
* @param element
* the element
*/
public void removeElement(Object element) {
elements.remove(element);
Iterator iterator = changeListeners.iterator();
while (iterator.hasNext()) {
((IListViewer) iterator.next()).removeElement(element);
}
}
/**
* Move element up.
*
* @param element
* the element
*/
public void moveElementUp(Object element) {
// remove element, then add it to Min(its last index -1, 0)
int index = elements.indexOf(element);
if (index > 0) {
elements.remove(element);
elements.add(index - 1, element);
}
Iterator iterator = changeListeners.iterator();
while (iterator.hasNext()) {
((IListViewer) iterator.next()).updateElement(element);
}
}
/**
* Move element down.
*
* @param element
* the element
*/
public void moveElementDown(Object element) {
// remove element, then add it to Max(its last index +1, elements.size())
int index = elements.indexOf(element);
if (index >= 0 && index < elements.size() - 1) {
elements.remove(element);
elements.add(index + 1, element);
}
Iterator iterator = changeListeners.iterator();
while (iterator.hasNext()) {
((IListViewer) iterator.next()).updateElement(element);
}
}
/**
* Element changed.
*
* @param element
* the element
*/
public void elementChanged(Object element) {
Iterator iterator = changeListeners.iterator();
while (iterator.hasNext()) {
((IListViewer) iterator.next()).updateElement(element);
}
}
/**
* Contains.
*
* @param element
* the element
*
* @return true, if contains
*/
public boolean contains(Object element) {
return elements.contains(element);
}
/**
* Removes the change listener.
*
* @param viewer
* the viewer
*/
public void removeChangeListener(IListViewer viewer) {
changeListeners.remove(viewer);
}
/**
* Adds the change listener.
*
* @param viewer
* the viewer
*/
public void addChangeListener(IListViewer viewer) {
changeListeners.add(viewer);
}
}
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