/*******************************************************************************
* Copyright (c) 2001, 2008 Oracle 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:
* Oracle Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.parts;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.ImageFigure;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.EditPolicy;
import org.eclipse.jst.pagedesigner.converter.ITagConverter;
import org.eclipse.jst.pagedesigner.editpolicies.NonVisualChildGraphicalEditPolicy;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* Represents a node that is non-visual in the runtime rendering
* but which may wish to have a meta-representation on the design canvas.
*
*/
public class NonVisualComponentEditPart extends NodeEditPart
{
protected IFigure createFigure()
{
IFigure figure_ = new ImageFigure(getTagConverter().getVisualImage())
{
protected void paintFigure(Graphics graphics) {
super.paintFigure(graphics);
if (getImage() == null)
return;
Rectangle srcRect = new Rectangle(getImage().getBounds());
graphics.drawImage(getImage(), srcRect, getClientArea());
}
};
figure_.setMinimumSize(new Dimension(0,0));
return figure_;
}
public void notifyChanged(INodeNotifier notifier, int eventType,
Object changedFeature, Object oldValue, Object newValue, int pos) {
// for now, do nothing
}
protected void createEditPolicies() {
super.createEditPolicies();
installEditPolicy(EditPolicy.SELECTION_FEEDBACK_ROLE
, new NonVisualChildGraphicalEditPolicy());
installEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE,
null);
}
@Override
public void deactivate()
{
ITagConverter tagConverter = (ITagConverter) getModel();
if (tagConverter != null)
{
tagConverter.dispose();
}
// always do super stuff
super.deactivate();
}
/**
* @return the tag converter
*/
protected ITagConverter getTagConverter()
{
ITagConverter tagConverter = (ITagConverter)getModel();
//need to call convertRefresh to get image (if any) from metadata
if (tagConverter != null) {
tagConverter.convertRefresh(null);
}
return tagConverter;
}
/**
* @return the host element for this edit part
*/
protected Element getModelElement()
{
return getTagConverter().getHostElement();
}
public IDOMNode getIDOMNode()
{
return (IDOMNode) getModelElement();
}
public Node getDOMNode() {
return getModelElement();
}
// public DragTracker getDragTracker(Request request) {
// // TODO: need to define drag semantics for these
// // Also, right now edit part dragging causes bad behaviour
// // in the non-visual decorator
// return null;//new ObjectModeDragTracker(this);
// }
}