ExecutableButtonViewPolicy.java

/*******************************************************************************
 * Mission Control Technologies, Copyright (c) 2009-2012, United States Government
 * as represented by the Administrator of the National Aeronautics and Space 
 * Administration. All rights reserved.
 *
 * The MCT platform is licensed under the Apache License, Version 2.0 (the 
 * "License"); you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 
 * License for the specific language governing permissions and limitations under 
 * the License.
 *
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 * the MCT Open Source Licenses file included with this distribution or the About 
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package gov.nasa.jsc.mct.executable.buttons;

import gov.nasa.arc.mct.components.AbstractComponent;
import gov.nasa.arc.mct.policy.ExecutionResult;
import gov.nasa.arc.mct.policy.Policy;
import gov.nasa.arc.mct.policy.PolicyContext;
import gov.nasa.arc.mct.services.component.ViewInfo;
import gov.nasa.jsc.mct.executable.buttons.view.ExecutableButtonManifestation;

public class ExecutableButtonViewPolicy implements Policy {

	@Override
	public ExecutionResult execute(PolicyContext context) {
		boolean result = true;
		ViewInfo viewInfo = context.getProperty(PolicyContext.PropertyName.TARGET_VIEW_INFO.getName(), ViewInfo.class);
		
		if (ExecutableButtonManifestation.class.equals(viewInfo.getViewClass())) {
			AbstractComponent targetComponent = context.getProperty(PolicyContext.PropertyName.TARGET_COMPONENT.getName(), ExecutableButtonComponent.class);
			result = !ExecutableButtonComponent.class.isAssignableFrom(targetComponent.getClass()); 
		} 
		return new ExecutionResult(context, result, null);
	}
}