/*****************************************************************************
 * Copyright (c) 2010 CEA LIST.
 *
 *    
 * 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:
 *  Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
 */
package org.eclipse.papyrus.uml.tools.utils;

import java.util.Iterator;

import org.eclipse.uml2.uml.Classifier;
import org.eclipse.uml2.uml.InstanceSpecification;

/**
 *  util class to display name of instancespecification 
 *
 */
public class InstanceSpecificationUtil {
	/**
	 * return the custom label of the operation, given UML2 specification and a custom style.
	 * 
	 * @param style
	 *        the integer representing the style of the label
	 * 
	 * @return the string corresponding to the label of the operation
	 */
	public static String getCustomLabel(InstanceSpecification instance, int style) {
		StringBuffer buffer = new StringBuffer();
		buffer.append(" "); // adds " " first for correct display considerations

		// name
		if((style & ICustomAppearence.DISP_NAME) != 0) {
			buffer.append(NamedElementUtil.getName(instance));
		}

		// classifier
		if((style & ICustomAppearence.DISP_TYPE) != 0) {
			if( !getTypesAsString(instance, style).equals("")){
				buffer.append(": ");
				buffer.append(getTypesAsString(instance, style));}
		}


		return buffer.toString();
	}
	/**
	 * Returns the list of classifier for an instance specification as a string
	 * 
	 * @return a string containing all classifier separated by commas
	 */
	private static String getTypesAsString(InstanceSpecification instance, int style) {
		StringBuffer typeString = new StringBuffer();
		Iterator<Classifier> classifierIterator = instance.getClassifiers().iterator();
		boolean firstParameter = true;
		while(classifierIterator.hasNext()) {
			Classifier classifier = classifierIterator.next();

			// get the label for this Classifier
			String classifierName = NamedElementUtil.getName(classifier);
			if (!classifierName.trim().equals("")) {
				if (!firstParameter) {
					typeString.append(", ");
				}
				typeString.append(classifierName);
				firstParameter = false;
			}
		}
		return typeString.toString();
	}
}