plugins/diagram/org.eclipse.papyrus.sysml.diagram.common/src-common-uml/org/eclipse/papyrus/uml/diagram/common/parser/SlotLabelParser.java

/*****************************************************************************
 * Copyright (c) 2011 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:
 *
 *		CEA LIST - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.uml.diagram.common.parser;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParserEditStatus;
import org.eclipse.gmf.runtime.common.ui.services.parser.ParserEditStatus;
import org.eclipse.gmf.runtime.emf.ui.services.parser.ISemanticParser;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.uml2.uml.InstanceValue;
import org.eclipse.uml2.uml.Slot;
import org.eclipse.uml2.uml.UMLPackage;
import org.eclipse.uml2.uml.ValueSpecification;

/**
 * Semantic Parser for {@link Slot}
 */
public class SlotLabelParser implements ISemanticParser {

	/**
	 * {@inheritDoc}
	 */
	@Override
	public String getEditString(IAdaptable element, int flags) {
		return getPrintString(element, flags);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public IParserEditStatus isValidEditString(IAdaptable element, String editString) {
		return ParserEditStatus.UNEDITABLE_STATUS;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public ICommand getParseCommand(IAdaptable element, String newString, int flags) {
		return UnexecutableCommand.INSTANCE;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public String getPrintString(IAdaptable element, int flags) {
		String result = "";
		EObject eObject = EMFHelper.getEObject(element);

		if (eObject instanceof Slot) {
			Slot slot = (Slot) eObject;
			result = "<UNDEFINED>";

			if (slot.getDefiningFeature() != null) {

				// Add defining feature
				result = slot.getDefiningFeature().getName();

				// Add values
				if (!slot.getValues().isEmpty()) {

					String values = "";
					Iterator<ValueSpecification> iter = slot.getValues().iterator();
					while (iter.hasNext()) {
						ValueSpecification currentSpecification = iter.next();

						String currentValue = currentSpecification.stringValue();
						if ((currentSpecification instanceof InstanceValue) && ((InstanceValue) currentSpecification).getInstance() != null) {
							currentValue = ((InstanceValue) currentSpecification).getInstance().getName();
						}

						values = values + currentValue;
						if (iter.hasNext()) {
							result = result + ", ";
						}
					}

					result = result + ": " + values;
				}
			}
		}

		return result;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public boolean isAffectingEvent(Object event, int flags) {
		if (event instanceof Notification) {
			Object feature = ((Notification) event).getFeature();
			if (feature instanceof EStructuralFeature) {
				return UMLPackage.eINSTANCE.getSlot_DefiningFeature().equals(feature);
			}
		}

		return false;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public IContentAssistProcessor getCompletionProcessor(IAdaptable element) {
		return null;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public List<EObject> getSemanticElementsBeingParsed(EObject element) {
		List<EObject> semanticElementsBeingParsed = new ArrayList<EObject>();
		semanticElementsBeingParsed.add(element);

		return semanticElementsBeingParsed;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public boolean areSemanticElementsAffected(EObject listener, Object notification) {
		return true;
	}

}