plugins/org.eclipse.viatra2.editor/src/org/eclipse/viatra2/treeeditor/actions/NewEntityAction.java

/*******************************************************************************
 * Copyright (c) 2004-2008 Istvan Rath and Daniel Varro
 * 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:
 *    Istvan Rath - initial API and implementation
 *******************************************************************************/

 package org.eclipse.viatra2.treeeditor.actions;


import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.viatra2.core.IEntity;
import org.eclipse.viatra2.treeeditor.Plugin;
import org.eclipse.viatra2.treeeditor.ViatraTreeEditor;
import org.eclipse.viatra2.treeeditor.commands.AddModelElementCommand;

public class NewEntityAction extends ViatraTreeEditorSelectionAction {

	public static final String ID = "ViatraTreeEditor.Actions.NewEntityAction";

	public NewEntityAction(IWorkbenchPart part) {
		super(part);
		setId(ID);
		setText("Add Entity");
		setToolTipText("Create a new entity with the selected entity as its parent.");
		setImageDescriptor(Plugin.getImageDescriptor("icons/entity_transparent.png"));
	}

	public void run() {
		IEntity parent = (IEntity)getSelectedObjects().toList().get(0);
		AddModelElementCommand cmd = new AddModelElementCommand();
		cmd.setParent(parent);
		((ViatraTreeEditor) iPart).getCommandStack().execute(cmd);
		((ViatraTreeEditor) iPart).updateActions();
	}

	@Override
	public void updateSelf() {
		if (getSelectedObjects().size() == 1 && getSelectedObjects().getFirstElement() instanceof IEntity)
		{
			setEnabled(true);
		}
		else
			setEnabled(false);
		
	}

}