/**
 * Copyright (c) 2010-2012 ISBAN S.L
 * 
 * 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:
 * 		Ruben De Dios (ISBAN S.L)
 * 		Andrez Alvarez Mattos (ISBAN S.L)
 */
package org.eclipse.gmf.tooling.simplemap.model.setting;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.util.BasicSettingDelegate.Stateless;
import org.eclipse.gmf.mappings.NodeMapping;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimpleChildReference;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimpleNode;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimpleNodeReference;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimplemappingsPackage;

public class SimpleNodeReferenceSettingDelegate extends Stateless {

	public SimpleNodeReferenceSettingDelegate(EStructuralFeature arg0) {
		super(arg0);
	}

	@Override
	protected Object get(InternalEObject owner, boolean resolve, boolean coreType) {

		if (eStructuralFeature.getEContainingClass() == SimplemappingsPackage.Literals.SIMPLE_NODE_REFERENCE) {
			switch (eStructuralFeature.getEContainingClass().getEAllStructuralFeatures().indexOf(eStructuralFeature)) {
			case SimplemappingsPackage.SIMPLE_NODE_REFERENCE__CONTAINMENT_FEATURE:
				return getContainmentFeature((SimpleNodeReference) owner);
			case SimplemappingsPackage.SIMPLE_NODE_REFERENCE__NAME:
				return getName((SimpleNodeReference) owner);
			}

		}

		return null;
	}

	private String getName(SimpleNodeReference owner) {

		String name = null;

		if (owner.getContainmentFeature() != null)
			name = owner.getContainmentFeature().getName();

		EClass domainMetaElement = null;

		if (owner instanceof SimpleNode)
			domainMetaElement = ((SimpleNode) owner).getDomainMetaElement();
		else if (owner instanceof SimpleChildReference) {
			NodeMapping referencedChild = (((SimpleChildReference) owner)).getReferencedChild();
			if (referencedChild != null)
				domainMetaElement = referencedChild.getDomainMetaElement();
		}

		if (domainMetaElement != null)
			name += ":" + domainMetaElement.getName();

		return name;
	}

	private Object getContainmentFeature(SimpleNodeReference owner) {
		return owner.getNodeReference() != null ? owner.getNodeReference().getContainmentFeature() : null;
	}

	@Override
	protected void set(InternalEObject owner, Object newValue) {

		if (eStructuralFeature.getEContainingClass() == SimplemappingsPackage.Literals.SIMPLE_NODE_REFERENCE) {
			switch (eStructuralFeature.getEContainingClass().getEAllStructuralFeatures().indexOf(eStructuralFeature)) {
			case SimplemappingsPackage.SIMPLE_NODE_REFERENCE__CONTAINMENT_FEATURE:
				setContainmentFeature((SimpleNodeReference) owner, (EReference) newValue);
				break;
			}

		}

	}

	private void setContainmentFeature(SimpleNodeReference owner, EReference newValue) {
		if (owner.getNodeReference() != null)
			owner.getNodeReference().setContainmentFeature(newValue);
	}

	@Override
	protected boolean isSet(InternalEObject owner) {

		if (eStructuralFeature.getEContainingClass() == SimplemappingsPackage.Literals.SIMPLE_NODE_REFERENCE) {
			switch (eStructuralFeature.getEContainingClass().getEAllStructuralFeatures().indexOf(eStructuralFeature)) {
			case SimplemappingsPackage.SIMPLE_NODE_REFERENCE__CONTAINMENT_FEATURE:
				return getContainmentFeature((SimpleNodeReference) owner) != null;
			}

		}

		return false;
	}

}