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/*******************************************************************************
* Copyright (c) 2001, 2007 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.xsd.ui.internal.design.editpolicies;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Polyline;
import org.eclipse.draw2d.RectangleFigure;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.Request;
import org.eclipse.gef.requests.ChangeBoundsRequest;
import org.eclipse.wst.xsd.ui.internal.adt.design.editpolicies.ADTSelectionFeedbackEditPolicy;
import org.eclipse.wst.xsd.ui.internal.commands.BaseDragAndDropCommand;
public class SelectionHandlesEditPolicyImpl extends ADTSelectionFeedbackEditPolicy
{
protected IFigure feedback;
protected Rectangle originalLocation;
protected BaseDragAndDropCommand dragAndDropCommand;
protected Polyline polyLine;
protected RectangleFigure ghostShape;
public boolean understandsRequest(Request request)
{
boolean result = false;
if (REQ_MOVE.equals(request.getType()))
{
result = false;
}
else
{
result = super.understandsRequest(request);
}
return result;
}
public org.eclipse.gef.commands.Command getCommand(Request request)
{
return null;
}
public void setDragAndDropCommand(BaseDragAndDropCommand dragAndDropCommand)
{
this.dragAndDropCommand = dragAndDropCommand;
}
public void showSourceFeedback(Request request)
{
eraseChangeBoundsFeedback(null);
if (dragAndDropCommand != null && dragAndDropCommand.canExecute()) {
if (REQ_MOVE.equals(request.getType()) || REQ_ADD.equals(request.getType())) {
if (dragAndDropCommand != null && dragAndDropCommand.getFeedbackFigure() != null) {
feedback = dragAndDropCommand.getFeedbackFigure();
addFeedback(feedback);
}
}
}
}
public void deactivate()
{
if (feedback != null)
{
removeFeedback(feedback);
feedback = null;
}
hideFocus();
super.deactivate();
}
/**
* Erase feedback indicating that the receiver object is
* being dragged. This method is called when a drag is
* completed or cancelled on the receiver object.
* @param dragTracker org.eclipse.gef.tools.DragTracker The drag tracker of the tool performing the drag.
*/
protected void eraseChangeBoundsFeedback(ChangeBoundsRequest request)
{
if (feedback != null)
{
removeFeedback(feedback);
}
feedback = null;
originalLocation = null;
}
/**
* Erase feedback indicating that the receiver object is
* being dragged. This method is called when a drag is
* completed or cancelled on the receiver object.
* @param dragTracker org.eclipse.gef.tools.DragTracker The drag tracker of the tool performing the drag.
*/
public void eraseSourceFeedback(Request request)
{
if (REQ_MOVE.equals(request.getType()) || REQ_ADD.equals(request.getType()))
{
eraseChangeBoundsFeedback((ChangeBoundsRequest)request);
}
}
}
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