defaultHandler="org.eclipse.compare.internal.CompareWithOtherResourceHandler"

/*******************************************************************************

 * Copyright (c) 2009 IBM 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:

 *     IBM Corporation - initial API and implementation

 *******************************************************************************/

package org.eclipse.compare.internal;

import org.eclipse.compare.CompareConfiguration;

import org.eclipse.compare.CompareUI;

import org.eclipse.core.commands.AbstractHandler;

import org.eclipse.core.commands.ExecutionEvent;

import org.eclipse.core.commands.ExecutionException;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.ui.IWorkbenchPage;

import org.eclipse.ui.handlers.HandlerUtil;

/**

 * This is a temporarily replacement for CompareWithOtherResourceAction which

 * was available from "Compare With > Other Resource...". See bug 264498.

 */

public class CompareWithOtherResourceHandler extends AbstractHandler {

	public Object execute(ExecutionEvent event) throws ExecutionException {

		ISelection selection = HandlerUtil.getCurrentSelection(event);

		IWorkbenchPage workbenchPage = HandlerUtil.getActiveWorkbenchWindow(event).getActivePage();

		// CompareAction#isEnabled(ISelection)

		CompareConfiguration cc= new CompareConfiguration();

		cc.setProperty(CompareEditor.CONFIRM_SAVE_PROPERTY, new Boolean(false));

		ResourceCompareInput input= new ResourceCompareInput(cc);

		int selectionSize = 0;

		if (selection instanceof IStructuredSelection) {

			selectionSize = ((IStructuredSelection) selection).toArray().length;

		}

		if (input.isEnabled(selection) || selectionSize == 1) {

			// CompareAction#run(ISelection)

			if (!input.setSelection(selection, workbenchPage.getWorkbenchWindow().getShell(), false))

				return null;

			input.initializeCompareConfiguration();

			CompareUI.openCompareEditorOnPage(input, workbenchPage);

		}

		return null;

	}

}