examples/org.eclipse.graphiti.examples.tutorial/src/org/eclipse/graphiti/examples/tutorial/features/TutorialCollapseDummyFeature.java

/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2005, 2012 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:
 *    SAP AG - initial API, implementation and documentation
 *    cbrand - Bug 377475 - Fix AbstractCustomFeature.execute and canExecute
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.graphiti.examples.tutorial.features;

import org.eclipse.emf.ecore.EClass;
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.pictograms.PictogramElement;
import org.eclipse.graphiti.platform.IPlatformImageConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.ui.PlatformUI;


public class TutorialCollapseDummyFeature extends AbstractCustomFeature {

	public TutorialCollapseDummyFeature(IFeatureProvider fp) {
		super(fp);
	}

	@Override
	public boolean canExecute(ICustomContext context) {
		boolean ret = false;
		PictogramElement[] pes = context.getPictogramElements();
		if (pes != null && pes.length == 1) {
			Object bo = getBusinessObjectForPictogramElement(pes[0]);
			if (bo instanceof EClass) {
				ret = true;
			}
		}
		return ret;
	}

	@Override
	public String getName() {
		return "Co&llapse"; //$NON-NLS-1$
	}

	@Override
	public String getDescription() {

		return "Collapse Figure"; //$NON-NLS-1$
	}

	@Override
	public String getImageId() {
		return IPlatformImageConstants.IMG_EDIT_COLLAPSE;
	}

	@Override
	public boolean isAvailable(IContext context) {
		return true;
	}

	public void execute(ICustomContext context) {
		MessageDialog.openInformation(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), "Information",//$NON-NLS-1$
				"The 'Collapse Feature' is intentionally not implemented yet."); //$NON-NLS-1$
	}

}