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/*****************************************************************************
* Copyright (c) 2013 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:
* Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.common.editpolicies;
import org.eclipse.core.databinding.observable.ChangeEvent;
import org.eclipse.core.databinding.observable.IChangeListener;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.draw2d.Border;
import org.eclipse.draw2d.IFigure;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.ResizableCompartmentEditPart;
import org.eclipse.gmf.runtime.draw2d.ui.figures.OneLineBorder;
import org.eclipse.gmf.runtime.gef.ui.internal.editpolicies.GraphicalEditPolicyEx;
import org.eclipse.gmf.runtime.notation.BooleanValueStyle;
import org.eclipse.gmf.runtime.notation.NotationPackage;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.infra.gmfdiag.common.databinding.custom.CustomBooleanStyleObservableValue;
import org.eclipse.papyrus.infra.gmfdiag.common.editpart.IPapyrusEditPart;
/**
* this edit policy has in charge to display the border of node NodeNamedElement
* associated figure has to be a {@link NodeNamedElementFigure}
*/
public class BorderDisplayEditPolicy extends GraphicalEditPolicyEx implements IChangeListener {
public static final String DISPLAY_BORDER = "displayBorder";
/** key for this edit policy */
public final static String BORDER_DISPLAY_EDITPOLICY = "BORDER_DISPLAY_EDITPOLICY";
protected IObservableValue styleObservable;
/**
*
* {@inheritDoc}
*/
@Override
public void activate() {
// retrieve the view and the element managed by the edit part
View view = (View)getHost().getModel();
if(view == null) {
return;
}
styleObservable = new CustomBooleanStyleObservableValue(view, EMFHelper.resolveEditingDomain(view), DISPLAY_BORDER);
styleObservable.addChangeListener(this);
getHost().refresh();
}
/**
*
* @param currentView
* @return the current Style that reperesent the boder
*/
protected BooleanValueStyle getMaintainSymbolRatioStyle(View currentView) {
return (BooleanValueStyle)currentView.getNamedStyle(NotationPackage.eINSTANCE.getBooleanValueStyle(), DISPLAY_BORDER);
}
/**
*
* {@inheritDoc}
*/
@Override
public void deactivate() {
if(styleObservable != null) {
styleObservable.removeChangeListener(this);
styleObservable.dispose();
styleObservable = null;
}
}
@Override
public void handleChange(ChangeEvent event) {
getHost().refresh();
}
@Override
public void refresh() {
refreshBorderDisplay();
}
protected IFigure getPrimaryShape() {
EditPart host = getHost();
if(host instanceof IPapyrusEditPart) {
IPapyrusEditPart graphicalHost = (IPapyrusEditPart)host;
return graphicalHost.getPrimaryShape();
}
return getHostFigure();
}
protected View getNotationView() {
EditPart host = getHost();
if(host instanceof org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart) {
return ((org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart)host).getNotationView();
}
View view = (View)host.getAdapter(View.class);
return view;
}
protected Border defaultBorder;
protected void refreshBorderDisplay() {
View view = getNotationView();
if(view == null) {
return;
}
BooleanValueStyle displayBorderStyle = (BooleanValueStyle)view.getNamedStyle(NotationPackage.eINSTANCE.getBooleanValueStyle(), BorderDisplayEditPolicy.DISPLAY_BORDER);
if(displayBorderStyle != null && !displayBorderStyle.isBooleanValue()) {
if(defaultBorder == null) {
defaultBorder = getPrimaryShape().getBorder();
}
getPrimaryShape().setBorder(null);
for(Object currentEditPart : getHost().getChildren()) {
if(currentEditPart instanceof ResizableCompartmentEditPart) {
((ResizableCompartmentEditPart)currentEditPart).getFigure().setBorder(null);
}
}
} else {
if(defaultBorder != null) {
getPrimaryShape().setBorder(defaultBorder);
}
defaultBorder = null;
for(Object currentEditPart : getHost().getChildren()) {
if(currentEditPart instanceof ResizableCompartmentEditPart) {
((ResizableCompartmentEditPart)currentEditPart).getFigure().setBorder(new OneLineBorder());
}
}
}
}
}
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