EditStructureHandler.java

/*******************************************************************************
 * Copyright (c) 2010 protos software gmbh (http://www.protos.de).
 * 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:
 * 		Thomas Schuetz and Henrik Rentz-Reichert (initial contribution)
 * 
 *******************************************************************************/

package org.eclipse.etrice.core.ui.outline;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.ui.editor.XtextEditor;
import org.eclipse.xtext.ui.editor.outline.ContentOutlineNode;
import org.eclipse.xtext.ui.editor.utils.EditorUtils;
import org.eclipse.xtext.util.concurrent.IUnitOfWork;

import org.eclipse.etrice.core.room.StructureClass;
import org.eclipse.etrice.ui.structure.DiagramAccess;

public class EditStructureHandler extends AbstractHandler {

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		ISelection selection = HandlerUtil.getCurrentSelection(event);
		if (selection instanceof IStructuredSelection) {
			IStructuredSelection ss = (IStructuredSelection) selection;
			Object sel = ss.getFirstElement();
			if (sel instanceof ContentOutlineNode) {
				final ContentOutlineNode node = (ContentOutlineNode) sel;
				XtextEditor xtextEditor = EditorUtils.getActiveXtextEditor(event);
				xtextEditor.getDocument().readOnly(new IUnitOfWork.Void<XtextResource>() {
					@Override
					public void process(XtextResource resource) throws Exception {
						if (resource != null) {
							EObject object = resource.getEObject(node.getURI().fragment());
							if (object instanceof StructureClass) {
								DiagramAccess diagramAccess = new DiagramAccess();
								diagramAccess.openDiagramEditor((StructureClass) object);
							}
						}
					}
				});
			}
		}
		return null;
	}

}