plugins/org.eclipse.gmf.graphdef.editor/src/org/eclipse/gmf/graphdef/editor/part/DeleteElementAction.java

/*
 *  Copyright (c) 2006, 2009 Borland Software Corporation and others.
 *  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:
 *      Borland Software Corporation - initial API and implementation
 */
package org.eclipse.gmf.graphdef.editor.part;

import java.util.Iterator;
import java.util.List;

import org.eclipse.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gmf.runtime.diagram.ui.actions.AbstractDeleteFromAction;
import org.eclipse.gmf.runtime.diagram.ui.actions.ActionIds;
import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.l10n.DiagramUIMessages;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;

/**
 * @generated
 */
public class DeleteElementAction extends AbstractDeleteFromAction {

	/**
	 * @generated
	 */
	public DeleteElementAction(IWorkbenchPart part) {
		super(part);
	}

	/**
	 * @generated
	 */
	public DeleteElementAction(IWorkbenchPage workbenchPage) {
		super(workbenchPage);
	}

	/**
	 * @generated
	 */
	public void init() {
		super.init();
		setId(ActionIds.ACTION_DELETE_FROM_MODEL);
		setText(DiagramUIMessages.DiagramEditor_Delete_from_Model);
		setToolTipText(DiagramUIMessages.DiagramEditor_Delete_from_ModelToolTip);
		ISharedImages workbenchImages = PlatformUI.getWorkbench().getSharedImages();
		setHoverImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));
		setImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));
		setDisabledImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE_DISABLED));
	}

	/**
	 * @generated
	 */
	protected String getCommandLabel() {
		return DiagramUIMessages.DiagramEditor_Delete_from_Model;
	}

	/**
	 * @generated
	 */
	protected Command getCommand(Request request) {
		List operationSet = getOperationSet();
		if (operationSet.isEmpty()) {
			return UnexecutableCommand.INSTANCE;
		}
		Iterator editParts = operationSet.iterator();
		CompositeTransactionalCommand command = new CompositeTransactionalCommand(getEditingDomain(), getCommandLabel());
		while (editParts.hasNext()) {
			EditPart editPart = (EditPart) editParts.next();
			Command curCommand = editPart.getCommand(request);
			if (curCommand != null) {
				command.compose(new CommandProxy(curCommand));
			}
		}
		if (command.isEmpty() || command.size() != operationSet.size()) {
			return UnexecutableCommand.INSTANCE;
		}
		return new ICommandProxy(command);
	}
}