/*
 * Copyright (c) 2003, 2004 IBM Corporation and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 *
 * Contributors:
 *   IBM - Initial API and implementation
 *
 * $Id: CommentImpl.java,v 1.5 2004/06/02 05:02:26 khussey Exp $
 */
package org.eclipse.uml2.impl;

import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Set;

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.EStructuralFeature;
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.EcoreEList;
import org.eclipse.emf.ecore.util.InternalEList;
import org.eclipse.uml2.Comment;
import org.eclipse.uml2.Element;
import org.eclipse.uml2.StringExpression;
import org.eclipse.uml2.TemplateSignature;
import org.eclipse.uml2.UML2Package;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Comment</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.uml2.impl.CommentImpl#getBody <em>Body</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.CommentImpl#getAnnotatedElements <em>Annotated Element</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.CommentImpl#getBodyExpression <em>Body Expression</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class CommentImpl extends TemplateableElementImpl implements Comment {
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public static final String copyright = "Copyright (c) 2003, 2004 IBM Corporation and others."; //$NON-NLS-1$

	/**
	 * The default value of the '{@link #getBody() <em>Body</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getBody()
	 * @generated
	 * @ordered
	 */
	protected static final String BODY_EDEFAULT = ""; //$NON-NLS-1$

	/**
	 * The cached value of the '{@link #getBody() <em>Body</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getBody()
	 * @generated
	 * @ordered
	 */
	protected String body = BODY_EDEFAULT;

	/**
	 * The cached value of the '{@link #getAnnotatedElements() <em>Annotated Element</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getAnnotatedElements()
	 * @generated
	 * @ordered
	 */
	protected EList annotatedElement = null;

	/**
	 * The cached value of the '{@link #getBodyExpression() <em>Body Expression</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getBodyExpression()
	 * @generated
	 * @ordered
	 */
	protected StringExpression bodyExpression = null;

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected EClass eStaticClass() {
		return UML2Package.eINSTANCE.getComment();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public String getBody() {
		return body;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setBody(String newBody) {
		String oldBody = body;
		body = newBody == null ? BODY_EDEFAULT : newBody;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.COMMENT__BODY, oldBody, body));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList getAnnotatedElements() {
		if (annotatedElement == null) {
			annotatedElement = new EObjectResolvingEList(Element.class, this, UML2Package.COMMENT__ANNOTATED_ELEMENT);
		}
		return annotatedElement;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public StringExpression getBodyExpression() {
		return bodyExpression;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetBodyExpression(StringExpression newBodyExpression, NotificationChain msgs) {
		StringExpression oldBodyExpression = bodyExpression;
		bodyExpression = newBodyExpression;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, UML2Package.COMMENT__BODY_EXPRESSION, oldBodyExpression, newBodyExpression);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setBodyExpression(StringExpression newBodyExpression) {
		if (newBodyExpression != bodyExpression) {
			NotificationChain msgs = null;
			if (bodyExpression != null)
				msgs = ((InternalEObject)bodyExpression).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - UML2Package.COMMENT__BODY_EXPRESSION, null, msgs);
			if (newBodyExpression != null)
				msgs = ((InternalEObject)newBodyExpression).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - UML2Package.COMMENT__BODY_EXPRESSION, null, msgs);
			msgs = basicSetBodyExpression(newBodyExpression, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.COMMENT__BODY_EXPRESSION, newBodyExpression, newBodyExpression));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public StringExpression createBodyExpression(EClass eClass) {
		StringExpression newBodyExpression = (StringExpression) eClass.getEPackage().getEFactoryInstance().create(eClass);
		if (eNotificationRequired()) {
			eNotify(new ENotificationImpl(this, 0, UML2Package.COMMENT__BODY_EXPRESSION, null, newBodyExpression));
		}
        setBodyExpression(newBodyExpression);
		return newBodyExpression;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList getOwnedElements() {
		EList ownedElement = (EList) getCacheAdapter().get(this, UML2Package.eINSTANCE.getElement_OwnedElement());

		if (null == ownedElement) {
			Set union = new LinkedHashSet();
			union.addAll(super.getOwnedElements());
			if (null != getBodyExpression()) {
				union.add(getBodyExpression());
			}

			ownedElement = new EcoreEList.UnmodifiableEList(this, UML2Package.eINSTANCE.getElement_OwnedElement(), union.size(), union.toArray());
			getCacheAdapter().put(this, UML2Package.eINSTANCE.getElement_OwnedElement(), ownedElement);
		}

		return ownedElement;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, Class baseClass, NotificationChain msgs) {
		if (featureID >= 0) {
			switch (eDerivedStructuralFeatureID(featureID, baseClass)) {
				case UML2Package.COMMENT__EANNOTATIONS:
					return ((InternalEList)getEAnnotations()).basicAdd(otherEnd, msgs);
				case UML2Package.COMMENT__TEMPLATE_BINDING:
					return ((InternalEList)getTemplateBindings()).basicAdd(otherEnd, msgs);
				case UML2Package.COMMENT__OWNED_TEMPLATE_SIGNATURE:
					if (ownedTemplateSignature != null)
						msgs = ((InternalEObject)ownedTemplateSignature).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - UML2Package.COMMENT__OWNED_TEMPLATE_SIGNATURE, null, msgs);
					return basicSetOwnedTemplateSignature((TemplateSignature)otherEnd, msgs);
				default:
					return eDynamicInverseAdd(otherEnd, featureID, baseClass, msgs);
			}
		}
		if (eContainer != null)
			msgs = eBasicRemoveFromContainer(msgs);
		return eBasicSetContainer(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, Class baseClass, NotificationChain msgs) {
		if (featureID >= 0) {
			switch (eDerivedStructuralFeatureID(featureID, baseClass)) {
				case UML2Package.COMMENT__EANNOTATIONS:
					return ((InternalEList)getEAnnotations()).basicRemove(otherEnd, msgs);
				case UML2Package.COMMENT__OWNED_COMMENT:
					return ((InternalEList)getOwnedComments()).basicRemove(otherEnd, msgs);
				case UML2Package.COMMENT__TEMPLATE_BINDING:
					return ((InternalEList)getTemplateBindings()).basicRemove(otherEnd, msgs);
				case UML2Package.COMMENT__OWNED_TEMPLATE_SIGNATURE:
					return basicSetOwnedTemplateSignature(null, msgs);
				case UML2Package.COMMENT__BODY_EXPRESSION:
					return basicSetBodyExpression(null, msgs);
				default:
					return eDynamicInverseRemove(otherEnd, featureID, baseClass, msgs);
			}
		}
		return eBasicSetContainer(null, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Object eGet(EStructuralFeature eFeature, boolean resolve) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.COMMENT__EANNOTATIONS:
				return getEAnnotations();
			case UML2Package.COMMENT__OWNED_ELEMENT:
				return getOwnedElements();
			case UML2Package.COMMENT__OWNER:
				if (resolve) return getOwner();
				return basicGetOwner();
			case UML2Package.COMMENT__OWNED_COMMENT:
				return getOwnedComments();
			case UML2Package.COMMENT__TEMPLATE_BINDING:
				return getTemplateBindings();
			case UML2Package.COMMENT__OWNED_TEMPLATE_SIGNATURE:
				return getOwnedTemplateSignature();
			case UML2Package.COMMENT__BODY:
				return getBody();
			case UML2Package.COMMENT__ANNOTATED_ELEMENT:
				return getAnnotatedElements();
			case UML2Package.COMMENT__BODY_EXPRESSION:
				return getBodyExpression();
		}
		return eDynamicGet(eFeature, resolve);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eSet(EStructuralFeature eFeature, Object newValue) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.COMMENT__EANNOTATIONS:
				getEAnnotations().clear();
				getEAnnotations().addAll((Collection)newValue);
				return;
			case UML2Package.COMMENT__OWNED_COMMENT:
				getOwnedComments().clear();
				getOwnedComments().addAll((Collection)newValue);
				return;
			case UML2Package.COMMENT__TEMPLATE_BINDING:
				getTemplateBindings().clear();
				getTemplateBindings().addAll((Collection)newValue);
				return;
			case UML2Package.COMMENT__OWNED_TEMPLATE_SIGNATURE:
				setOwnedTemplateSignature((TemplateSignature)newValue);
				return;
			case UML2Package.COMMENT__BODY:
				setBody((String)newValue);
				return;
			case UML2Package.COMMENT__ANNOTATED_ELEMENT:
				getAnnotatedElements().clear();
				getAnnotatedElements().addAll((Collection)newValue);
				return;
			case UML2Package.COMMENT__BODY_EXPRESSION:
				setBodyExpression((StringExpression)newValue);
				return;
		}
		eDynamicSet(eFeature, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eUnset(EStructuralFeature eFeature) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.COMMENT__EANNOTATIONS:
				getEAnnotations().clear();
				return;
			case UML2Package.COMMENT__OWNED_COMMENT:
				getOwnedComments().clear();
				return;
			case UML2Package.COMMENT__TEMPLATE_BINDING:
				getTemplateBindings().clear();
				return;
			case UML2Package.COMMENT__OWNED_TEMPLATE_SIGNATURE:
				setOwnedTemplateSignature((TemplateSignature)null);
				return;
			case UML2Package.COMMENT__BODY:
				setBody(BODY_EDEFAULT);
				return;
			case UML2Package.COMMENT__ANNOTATED_ELEMENT:
				getAnnotatedElements().clear();
				return;
			case UML2Package.COMMENT__BODY_EXPRESSION:
				setBodyExpression((StringExpression)null);
				return;
		}
		eDynamicUnset(eFeature);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean eIsSet(EStructuralFeature eFeature) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.COMMENT__EANNOTATIONS:
				return eAnnotations != null && !eAnnotations.isEmpty();
			case UML2Package.COMMENT__OWNED_ELEMENT:
				return !getOwnedElements().isEmpty();
			case UML2Package.COMMENT__OWNER:
				return basicGetOwner() != null;
			case UML2Package.COMMENT__OWNED_COMMENT:
				return ownedComment != null && !ownedComment.isEmpty();
			case UML2Package.COMMENT__TEMPLATE_BINDING:
				return templateBinding != null && !templateBinding.isEmpty();
			case UML2Package.COMMENT__OWNED_TEMPLATE_SIGNATURE:
				return ownedTemplateSignature != null;
			case UML2Package.COMMENT__BODY:
				return BODY_EDEFAULT == null ? body != null : !BODY_EDEFAULT.equals(body);
			case UML2Package.COMMENT__ANNOTATED_ELEMENT:
				return annotatedElement != null && !annotatedElement.isEmpty();
			case UML2Package.COMMENT__BODY_EXPRESSION:
				return bodyExpression != null;
		}
		return eDynamicIsSet(eFeature);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public String toString() {
		if (eIsProxy()) return super.toString();

		StringBuffer result = new StringBuffer(super.toString());
		result.append(" (body: "); //$NON-NLS-1$
		result.append(body);
		result.append(')');
		return result.toString();
	}

} //CommentImpl