/*******************************************************************************
 * Copyright (c) 2011, 2013 Formal Mind GmbH and University of Dusseldorf.
 * 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:
 *     Michael Jastram - initial API and implementation
 ******************************************************************************/

package org.eclipse.rmf.reqif10.pror.provider;


import java.util.Collection;
import java.util.List;

import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.command.DragAndDropFeedback;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.IItemPropertySource;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.emf.edit.provider.ViewerNotification;
import org.eclipse.rmf.reqif10.DatatypeDefinitionEnumeration;
import org.eclipse.rmf.reqif10.EmbeddedValue;
import org.eclipse.rmf.reqif10.EnumValue;
import org.eclipse.rmf.reqif10.Identifiable;
import org.eclipse.rmf.reqif10.ReqIF10Factory;
import org.eclipse.rmf.reqif10.ReqIF10Package;
import org.eclipse.rmf.reqif10.common.util.ReqIF10Util;

/**
 * This is the item provider adapter for a {@link org.eclipse.rmf.reqif10.DatatypeDefinitionEnumeration} object.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public class DatatypeDefinitionEnumerationItemProvider
	extends DatatypeDefinitionItemProvider
	implements
		IEditingDomainItemProvider,
		IStructuredItemContentProvider,
		ITreeItemContentProvider,
		IItemLabelProvider,
		IItemPropertySource {
	/**
	 * This constructs an instance from a factory and a notifier.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public DatatypeDefinitionEnumerationItemProvider(AdapterFactory adapterFactory) {
		super(adapterFactory);
	}

	/**
	 * This returns the property descriptors for the adapted class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
		if (itemPropertyDescriptors == null) {
			super.getPropertyDescriptors(object);

		}
		return itemPropertyDescriptors;
	}

	/**
	 * This specifies how to implement {@link #getChildren} and is used to deduce an appropriate feature for an
	 * {@link org.eclipse.emf.edit.command.AddCommand}, {@link org.eclipse.emf.edit.command.RemoveCommand} or
	 * {@link org.eclipse.emf.edit.command.MoveCommand} in {@link #createCommand}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Collection<? extends EStructuralFeature> getChildrenFeatures(Object object) {
		if (childrenFeatures == null) {
			super.getChildrenFeatures(object);
			childrenFeatures.add(ReqIF10Package.Literals.DATATYPE_DEFINITION_ENUMERATION__SPECIFIED_VALUES);
		}
		return childrenFeatures;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EStructuralFeature getChildFeature(Object object, Object child) {
		// Check the type of the specified child object and return the proper feature to use for
		// adding (see {@link AddCommand}) it as a child.

		return super.getChildFeature(object, child);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected boolean shouldComposeCreationImage() {
		return true;
	}

	@Override
	public Object getImage(Object object) {
		return overlayImage(object, getResourceLocator().getImage("full/obj16/DatatypeDefinitionEnumeration.png"));
	}

	/**
	 * This returns the label text for the adapted class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated NOT
	 */
	@Override
	public String getText(Object object) {
		return super.getText(object);
	}

	/**
	 * This handles model notifications by calling {@link #updateChildren} to update any cached
	 * children and by creating a viewer notification, which it passes to {@link #fireNotifyChanged}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void notifyChanged(Notification notification) {
		updateChildren(notification);

		switch (notification.getFeatureID(DatatypeDefinitionEnumeration.class)) {
			case ReqIF10Package.DATATYPE_DEFINITION_ENUMERATION__SPECIFIED_VALUES:
				fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
				return;
		}
		super.notifyChanged(notification);
	}

	/**
	 * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children
	 * that can be created under this object.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
		super.collectNewChildDescriptors(newChildDescriptors, object);

		newChildDescriptors.add
			(createChildParameter
				(ReqIF10Package.Literals.DATATYPE_DEFINITION_ENUMERATION__SPECIFIED_VALUES,
				 ReqIF10Factory.eINSTANCE.createEnumValue()));
	}
	
	/**
	 * Ensures that added items have a unique ID
	 */
	@Override
	protected Command createAddCommand(EditingDomain domain, EObject owner,
			EStructuralFeature feature, Collection<?> collection, int index) {
		
		// Ensure that the ID is unique if it's a copy operation.
		// Also, ensure that an EnumValue has an EmbeddedValue.
		for (Object object : collection) {
			if (object instanceof Identifiable)
				ReqIF10Util.ensureIdIsUnique(owner.eResource(),
						(Identifiable) object);
			
			if (object instanceof EnumValue) {
				EnumValue enumValue = (EnumValue) object;
				if (enumValue.getProperties() == null) {
					EmbeddedValue embeddedValue = ReqIF10Factory.eINSTANCE.createEmbeddedValue();
					enumValue.setProperties(embeddedValue);
				}
			}
		}
		
		return super.createAddCommand(domain, owner, feature, collection, index);
	}

	@Override
	protected Command createDragAndDropCommand(EditingDomain domain,
			Object owner, float location, int operations, int operation,
			Collection<?> collection) {
		
		// Ensure that the ID is unique if it's a copy operation.
		if (owner instanceof EObject && operation == DragAndDropFeedback.DROP_COPY) {
			for (Object object : collection) {
				if (object instanceof Identifiable)
					ReqIF10Util.ensureIdIsUnique(((EObject)owner).eResource(),
							(Identifiable) object);
			}
		}
		return super.createDragAndDropCommand(domain, owner, location, operations,
				operation, collection);
	}

}