/*******************************************************************************
 * Copyright (c) 2007, 2010 BMW Car IT, Technische Universitaet Muenchen, and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 * BMW Car IT - Initial API and implementation
 * Technische Universitaet Muenchen - Major refactoring and extension
 *******************************************************************************/
package org.eclipse.emf.edapt.spi.migration.impl;

import java.util.Collection;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.util.EObjectResolvingEList;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.edapt.spi.migration.Instance;
import org.eclipse.emf.edapt.spi.migration.MigrationPackage;
import org.eclipse.emf.edapt.spi.migration.Model;
import org.eclipse.emf.edapt.spi.migration.ModelResource;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Model Resource</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 * <li>{@link org.eclipse.emf.edapt.spi.migration.impl.ModelResourceImpl#getRootInstances <em>Root Instances</em>}</li>
 * <li>{@link org.eclipse.emf.edapt.spi.migration.impl.ModelResourceImpl#getModel <em>Model</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class ModelResourceImpl extends AbstractResourceImpl implements ModelResource {
	/**
	 * The cached value of the '{@link #getRootInstances() <em>Root Instances</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @see #getRootInstances()
	 * @generated
	 * @ordered
	 */
	protected EList<Instance> rootInstances;

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	protected ModelResourceImpl() {
		super();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return MigrationPackage.Literals.MODEL_RESOURCE;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public EList<Instance> getRootInstances() {
		if (rootInstances == null) {
			rootInstances = new EObjectResolvingEList<Instance>(Instance.class, this,
				MigrationPackage.MODEL_RESOURCE__ROOT_INSTANCES);
		}
		return rootInstances;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public Model getModel() {
		if (eContainerFeatureID() != MigrationPackage.MODEL_RESOURCE__MODEL) {
			return null;
		}
		return (Model) eContainer();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	public NotificationChain basicSetModel(Model newModel, NotificationChain msgs) {
		msgs = eBasicSetContainer((InternalEObject) newModel, MigrationPackage.MODEL_RESOURCE__MODEL, msgs);
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public void setModel(Model newModel) {
		if (newModel != eInternalContainer()
			|| eContainerFeatureID() != MigrationPackage.MODEL_RESOURCE__MODEL && newModel != null) {
			if (EcoreUtil.isAncestor(this, (EObject) newModel)) {
				throw new IllegalArgumentException("Recursive containment not allowed for " + toString()); //$NON-NLS-1$
			}
			NotificationChain msgs = null;
			if (eInternalContainer() != null) {
				msgs = eBasicRemoveFromContainer(msgs);
			}
			if (newModel != null) {
				msgs = ((InternalEObject) newModel).eInverseAdd(this, MigrationPackage.MODEL__RESOURCES, Model.class,
					msgs);
			}
			msgs = basicSetModel(newModel, msgs);
			if (msgs != null) {
				msgs.dispatch();
			}
		}
		else if (eNotificationRequired()) {
			eNotify(new ENotificationImpl(this, Notification.SET, MigrationPackage.MODEL_RESOURCE__MODEL, newModel,
				newModel));
		}
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
		case MigrationPackage.MODEL_RESOURCE__MODEL:
			if (eInternalContainer() != null) {
				msgs = eBasicRemoveFromContainer(msgs);
			}
			return basicSetModel((Model) otherEnd, msgs);
		}
		return super.eInverseAdd(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
		case MigrationPackage.MODEL_RESOURCE__MODEL:
			return basicSetModel(null, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public NotificationChain eBasicRemoveFromContainerFeature(NotificationChain msgs) {
		switch (eContainerFeatureID()) {
		case MigrationPackage.MODEL_RESOURCE__MODEL:
			return eInternalContainer().eInverseRemove(this, MigrationPackage.MODEL__RESOURCES, Model.class, msgs);
		}
		return super.eBasicRemoveFromContainerFeature(msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
		case MigrationPackage.MODEL_RESOURCE__ROOT_INSTANCES:
			return getRootInstances();
		case MigrationPackage.MODEL_RESOURCE__MODEL:
			return getModel();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@SuppressWarnings("unchecked")
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
		case MigrationPackage.MODEL_RESOURCE__ROOT_INSTANCES:
			getRootInstances().clear();
			getRootInstances().addAll((Collection<? extends Instance>) newValue);
			return;
		case MigrationPackage.MODEL_RESOURCE__MODEL:
			setModel((Model) newValue);
			return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
		case MigrationPackage.MODEL_RESOURCE__ROOT_INSTANCES:
			getRootInstances().clear();
			return;
		case MigrationPackage.MODEL_RESOURCE__MODEL:
			setModel((Model) null);
			return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
		case MigrationPackage.MODEL_RESOURCE__ROOT_INSTANCES:
			return rootInstances != null && !rootInstances.isEmpty();
		case MigrationPackage.MODEL_RESOURCE__MODEL:
			return getModel() != null;
		}
		return super.eIsSet(featureID);
	}

} // ModelResourceImpl