/*******************************************************************************
 * 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.ui.tests.commands;

import org.eclipse.core.commands.Command;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.State;
import org.eclipse.ui.commands.ICommandService;
import org.eclipse.ui.handlers.IHandlerService;
import org.eclipse.ui.handlers.RegistryToggleState;
import org.eclipse.ui.tests.harness.util.UITestCase;

/**
 * @since 3.5
 * @author Prakash G.R.
 *
 */
public class ToggleStateTest extends UITestCase {

	private ICommandService commandService;
	private IHandlerService handlerService;


	public ToggleStateTest(String testName) {
		super(testName);
	}
	
	
	protected void doSetUp() throws Exception {
		super.doSetUp();
		commandService = (ICommandService) fWorkbench.getService(ICommandService.class);
		handlerService = (IHandlerService) fWorkbench.getService(IHandlerService.class);
	}
	
	public void testDefaultValues() throws Exception {
		
		Command command1 = commandService.getCommand("org.eclipse.ui.tests.toggleStateCommand1");
		Command command2 = commandService.getCommand("org.eclipse.ui.tests.toggleStateCommand2");

		// check the initial values
		assertState(command1, true);
		assertState(command2, false);
		
		// execute and check the values have changed or not
		handlerService.executeCommand(command1.getId(), null);
		handlerService.executeCommand(command2.getId(), null);

		assertState(command1, false);
		assertState(command2, true);

	}
	
	public void testExceptionThrown() throws Exception {
		
		Command command3 = commandService.getCommand("org.eclipse.ui.tests.toggleStateCommand3");
		try {
			handlerService.executeCommand(command3.getId(), null);
			fail("Command3 doesn't have any state. An exception must be thrown from the handler, when trying to change that");
		} catch (Exception e) {
			if(!(e instanceof ExecutionException))
				throw e;
		}
	}


	private void assertState(Command command1, boolean expectedValue) {
		State state = command1.getState(RegistryToggleState.STATE_ID);
		Object value = state.getValue();
		assertTrue(value instanceof Boolean);
		assertEquals(expectedValue, ((Boolean)value).booleanValue());
	}
	
}