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/*******************************************************************************
* <copyright>
*
* Copyright (c) 2005, 2010 SAP AG.
* 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:
* Petya Sabeva - initial API, implementation and documentation
*
* </copyright>
*
*******************************************************************************/
package org.eclipse.jpt.jpadiagrameditor.ui.internal.feature;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IContext;
import org.eclipse.graphiti.features.context.ICustomContext;
import org.eclipse.graphiti.features.custom.AbstractCustomFeature;
import org.eclipse.graphiti.mm.algorithms.GraphicsAlgorithm;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.provider.IJPAEditorFeatureProvider;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.GraphicsUpdater;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorConstants;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorUtil;
public class CollapseCompartmentShapeFeature extends AbstractCustomFeature{
public CollapseCompartmentShapeFeature(IFeatureProvider fp) {
super(fp);
}
public void execute(ICustomContext context) {
PictogramElement el = context.getPictogramElements()[0];
final ContainerShape containerShape = (ContainerShape) el;
final ContainerShape entityShape = containerShape.getContainer();
final GraphicsAlgorithm algo = el.getGraphicsAlgorithm();
TransactionalEditingDomain ted = TransactionUtil.getEditingDomain(algo);
ted.getCommandStack().execute(new RecordingCommand(ted) {
@Override
protected void doExecute() {
algo.setHeight(JPAEditorConstants.COMPARTMENT_MIN_HEIGHT);
GraphicsUpdater.updateEntityShape(entityShape);
GraphicsUpdater.setCollapsed(containerShape, true);
JPAEditorUtil.rearrangeAllConnections(entityShape, getFeatureProvider(), false);
}
});
}
@Override
public boolean canExecute(ICustomContext context) {
return true;
}
@Override
public IJPAEditorFeatureProvider getFeatureProvider() {
return (IJPAEditorFeatureProvider)super.getFeatureProvider();
}
@Override
public boolean isAvailable(IContext context) {
boolean ret = false;
if (context instanceof ICustomContext) {
PictogramElement[] pes = ((ICustomContext) context).getPictogramElements();
if (pes != null && pes.length > 0) {
boolean collapsePossible = false;
for (int i = 0; i < pes.length; i++) {
PictogramElement pe = pes[i];
Object bo = getBusinessObjectForPictogramElement(pe);
if (bo != null) {
return false;
}
if (!collapsePossible) {
if(!GraphicsUpdater.isCollapsed((ContainerShape)pe)) {
collapsePossible = true;
}
}
}
if (collapsePossible) {
return true;
}
}
}
return ret;
}
}
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