/******************************************************************************
* Copyright (c) 2014 Oracle
* 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:
* Ling Hao - initial implementation and ongoing maintenance
* Shenxue Zhou - initial implementation and ongoing maintenance
******************************************************************************/
package org.eclipse.sapphire.ui.swt.gef.policies;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.editpolicies.NonResizableEditPolicy;
import org.eclipse.gef.handles.AbstractHandle;
import org.eclipse.sapphire.ui.diagram.shape.def.SelectionPresentation;
import org.eclipse.sapphire.ui.swt.gef.figures.FigureUtil;
import org.eclipse.sapphire.ui.swt.gef.figures.IShapeFigure;
import org.eclipse.sapphire.ui.swt.gef.model.DiagramResourceCache;
import org.eclipse.sapphire.ui.swt.gef.parts.DiagramNodeEditPart;
import org.eclipse.sapphire.ui.swt.gef.utils.SapphireSurroundingHandle;
/**
* @author <a href="mailto:ling.hao@oracle.com">Ling Hao</a>
* @author <a href="mailto:shenxue.zhou@oracle.com">Shenxue Zhou</a>
*/
public class DiagramNodeSelectionEditPolicy extends NonResizableEditPolicy {
private IShapeFigure getNodeFigure()
{
DiagramNodeEditPart part = (DiagramNodeEditPart) getHost();
if (part.getFigure() instanceof IShapeFigure)
{
return ((IShapeFigure) part.getFigure());
}
return null;
}
@Override
protected List<?> createSelectionHandles()
{
List<AbstractHandle> list = new ArrayList<AbstractHandle>();
GraphicalEditPart owner = (GraphicalEditPart) getHost();
DiagramResourceCache resourceCache = ((DiagramNodeEditPart)owner).getCastedModel().getDiagramModel().getResourceCache();
SelectionPresentation selectionPresentation = ((DiagramNodeEditPart)owner).getCastedModel().getShapeModel().getShapePresentation().getSelectionPresentation();
SapphireSurroundingHandle selectionHandle = new SapphireSurroundingHandle(owner, ((DiagramNodeEditPart)owner).getConfigurationManager(),
resourceCache, isDragAllowed());
if (selectionPresentation != null)
{
selectionHandle.setLineOffset(selectionPresentation.getOffset().content());
selectionHandle.setLineWidth(selectionPresentation.getWeight().content());
selectionHandle.setLineStyle(FigureUtil.convertLineStyle(selectionPresentation.getStyle().content()));
selectionHandle.setLineColor(selectionPresentation.getColor().content());
}
list.add(selectionHandle);
return list;
}
@Override
protected void hideFocus()
{
IShapeFigure shapeFigure = getNodeFigure();
if (shapeFigure != null)
{
shapeFigure.setFocus(false);
}
}
@Override
protected void showFocus() {
IShapeFigure shapeFigure = getNodeFigure();
if (shapeFigure != null)
{
shapeFigure.setFocus(true);
}
}
@Override
protected void hideSelection()
{
IShapeFigure shapeFigure = getNodeFigure();
if (shapeFigure != null)
{
shapeFigure.setSelected(false);
shapeFigure.setFocus(false);
removeSelectionHandles();
}
}
@Override
protected void showPrimarySelection()
{
IShapeFigure shapeFigure = getNodeFigure();
if (shapeFigure != null)
{
shapeFigure.setSelected(true);
shapeFigure.setFocus(true);
addSelectionHandles();
}
}
@Override
protected void showSelection()
{
IShapeFigure shapeFigure = getNodeFigure();
if (shapeFigure != null)
{
shapeFigure.setSelected(true);
shapeFigure.setFocus(false);
addSelectionHandles();
}
}
}