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/*******************************************************************************
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* Copyright (c) 2000, 2010 IBM Corporation and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package org.eclipse.gef.handles;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import org.eclipse.gef.DragTracker;
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/**
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* A handle for bendpoints on a connection.
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*/
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public class BendpointHandle extends ConnectionHandle implements
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PropertyChangeListener {
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/*
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* @TODO:Pratik No need to implement PropertyChangeListener or override
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* propertyChange()
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*/
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private int index;
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/**
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* By default, <code>null</code> is returned for the DragTracker.
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*
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* @return returns null by default
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*/
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protected DragTracker createDragTracker() {
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return null;
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}
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/**
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* Returns the index. This could mean different things for different
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* subclasses. It could be the index of the point the handle belongs to. Or
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* it could be the index of the handle itself. For
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* {@link BendpointCreationHandle}s and {@link BendpointMoveHandle}s, this
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* is the index of the handle itself, where these two types of handles are
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* indexed separately. For example, if you have one bendpoint, you will have
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* 2 creation handles, indexed as 0 and 1, and 1 move handle, indexed as 0.
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*
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* @return the index
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*/
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public int getIndex() {
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return index;
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}
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/**
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* Revalidates this handle when the connection's points change.
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*
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* @param event
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* the event that caused the points change
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*/
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public void propertyChange(PropertyChangeEvent event) {
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revalidate();
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}
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/**
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* Sets the index.
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*
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* @param i
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* the new index
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* @see #getIndex()
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*/
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protected void setIndex(int i) {
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index = i;
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}
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}
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