SimpleNodeItemPropertyDescriptorProvider.java example

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/**
 * 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.edit.properties;

import java.util.Collection;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.emf.common.util.UniqueEList;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.edit.provider.ItemPropertyDescriptor;
import org.eclipse.gmf.tooling.simplemap.model.edit.IItemPropertyDescriptorProvider;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimpleChildNode;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimpleChildReference;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimpleMapping;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimpleNode;
import org.eclipse.gmf.tooling.simplemap.simplemappings.SimplemappingsPackage;

public class SimpleNodeItemPropertyDescriptorProvider extends AdapterImpl implements IItemPropertyDescriptorProvider {

	@Override
	public ItemPropertyDescriptor createItemPropertyDescriptor(AdapterFactory adapterFactory, ResourceLocator resourceLocator, String displayName, String description, EStructuralFeature feature,
			boolean isSettable, boolean multiLine, boolean sortChoices, Object staticImage, String category, String[] filterFlags) {

		return new SimpleNodeItemPropertyDescriptor(adapterFactory, resourceLocator, displayName, description, feature, isSettable, multiLine, sortChoices, staticImage, category, filterFlags);
	}

	class SimpleNodeItemPropertyDescriptor extends ItemPropertyDescriptor {

		public SimpleNodeItemPropertyDescriptor(AdapterFactory adapterFactory, ResourceLocator resourceLocator, String displayName, String description, EStructuralFeature feature, boolean isSettable,
				boolean multiLine, boolean sortChoices, Object staticImage, String category, String[] filterFlags) {
			super(adapterFactory, resourceLocator, displayName, description, feature, isSettable, multiLine, sortChoices, staticImage, category, filterFlags);
		}

		@Override
		public Collection<?> getChoiceOfValues(Object object) {

			if (feature == SimplemappingsPackage.Literals.SIMPLE_NODE_REFERENCE__CONTAINMENT_FEATURE) {
				Collection<Object> choiceOfValues = new UniqueEList<Object>();

				if (object instanceof SimpleChildNode) {
					EClass parentMetaElement = ((SimpleChildNode) object).getParentMetaElement();
					choiceOfValues.addAll(parentMetaElement.getEAllContainments());
				}

				return choiceOfValues;
			}

			if (feature == SimplemappingsPackage.Literals.SIMPLE_NODE__DOMAIN_META_ELEMENT) {
				Collection<Object> choiceOfValues = new UniqueEList<Object>();

				EReference containmentFeature = ((SimpleNode) object).getContainmentFeature();

				if (containmentFeature != null)
					for (Object choice : super.getChoiceOfValues(object))
						if (choice instanceof EClass && ((EClass) containmentFeature.getEType()).isSuperTypeOf((EClass) choice))
							choiceOfValues.add(choice);

				return choiceOfValues;
			}

			if (feature == SimplemappingsPackage.Literals.SIMPLE_NODE__LABEL_ATTRIBUTES) {
				Collection<Object> choiceOfValues = new UniqueEList<Object>();

				EClass domainMetaElement = ((SimpleNode) object).getDomainMetaElement();

				if (domainMetaElement != null)
					for (EAttribute attribute : domainMetaElement.getEAllAttributes()) {
						Class<?> attributeInstanceClass = attribute.getEType().getInstanceClass();
						Class<?> stringInstanceClass = EcorePackage.eINSTANCE.getEString().getInstanceClass();
						if (attributeInstanceClass != null && stringInstanceClass.isAssignableFrom(attributeInstanceClass))
							choiceOfValues.add(attribute);
					}

				return choiceOfValues;
			}

			if (feature == SimplemappingsPackage.Literals.SIMPLE_CHILD_REFERENCE__REFERENCED_SIMPLE_NODE) {
				Collection<Object> choiceOfValues = new UniqueEList<Object>();

				EReference containmentFeature = ((SimpleChildReference) object).getContainmentFeature();

				if (containmentFeature != null)
					for (Object choice : super.getChoiceOfValues(object))
						if (choice instanceof SimpleNode && ((EClass) containmentFeature.getEType()).isSuperTypeOf(((SimpleNode) choice).getDomainMetaElement()))
							choiceOfValues.add(choice);

				return choiceOfValues;
			}

			return super.getChoiceOfValues(object);
		}

		@Override
		public boolean canSetProperty(Object object) {

			boolean defaultValue = super.canSetProperty(object);

			switch (feature.getEContainingClass().getEAllStructuralFeatures().indexOf(feature)) {
			case SimplemappingsPackage.SIMPLE_MAPPING__DOMAIN_META_ELEMENT: {
				if (object instanceof SimpleMapping)
					return false;
			}
			case SimplemappingsPackage.SIMPLE_NODE__DOMAIN_META_ELEMENT: {
				if (object instanceof SimpleChildReference)
					return false;
			}

			case SimplemappingsPackage.SIMPLE_NODE__LABEL_ATTRIBUTES: {
				if (object instanceof SimpleChildReference)
					return false;
			}
			}

			return defaultValue;
		}

	}

}