old/org.eclipse.emf.ecp.editor/src/org/eclipse/emf/ecp/editor/AnnotationHiddenDescriptor.java

/*******************************************************************************
 * Copyright (c) 2008-2011 Chair for Applied Software Engineering,
 * Technische Universitaet Muenchen.
 * 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:
 ******************************************************************************/
package org.eclipse.emf.ecp.editor;

import org.eclipse.emf.ecore.EAnnotation;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;

/**
 * A {@link IAttributeDescriptor} using the annotation in the genmodel.
 */
public class AnnotationHiddenDescriptor implements IAttributeDescriptor<Boolean> {

	private final Boolean defaultValue = new Boolean(false);
	
	/**
	 * Returns true, if feature associated with given.
	 * {@link IItemPropertyDescriptor} marked with hidden=true annotation
	 * 
	 * @see org.eclipse.emf.ecp.editor.IAttributeDescriptor#getValue(org.eclipse.emf.edit.provider.IItemPropertyDescriptor,
	 *      org.eclipse.emf.ecore.EObject)
	 * @param propertyDescriptor
	 * 						the {@link IItemPropertyDescriptor}
	 * @param modelElement
	 * 					the {@link EObject} 
	 * @return isHidden as boolean 
	 */
	public Boolean getValue(IItemPropertyDescriptor propertyDescriptor,
			EObject modelElement) {
		EAnnotation priority = ((EStructuralFeature) propertyDescriptor.getFeature(modelElement))
				.getEAnnotation("org.eclipse.emf.ecp.editor");
			if (priority == null || priority.getDetails() == null || priority.getDetails().get("hidden") == null) {
				return defaultValue;
			}
			return Boolean.parseBoolean(priority.getDetails().get("hidden"));
	}
}