/**
 * *******************************************************************************
 * Copyright (c) 2009 Mia-Software.
 * 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:
 * 
 *     Sebastien Minguet (Mia-Software) - initial API and implementation
 *     Frederic Madiot (Mia-Software) - initial API and implementation
 *     Fabien Giquel (Mia-Software) - initial API and implementation
 *     Gabriel Barbier (Mia-Software) - initial API and implementation
 *     Erwan Breton (Sodifrance) - initial API and implementation
 *     Romain Dervaux (Mia-Software) - initial API and implementation
 * *******************************************************************************
 *
 * $Id$
 */
package org.eclipse.gmt.modisco.java.emf.impl;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.InternalEObject;

import org.eclipse.emf.ecore.impl.ENotificationImpl;

import org.eclipse.gmt.modisco.java.Expression;
import org.eclipse.gmt.modisco.java.SingleVariableAccess;
import org.eclipse.gmt.modisco.java.VariableDeclaration;

import org.eclipse.gmt.modisco.java.emf.JavaPackage;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Single Variable Access</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.gmt.modisco.java.emf.impl.SingleVariableAccessImpl#getVariable <em>Variable</em>}</li>
 *   <li>{@link org.eclipse.gmt.modisco.java.emf.impl.SingleVariableAccessImpl#getQualifier <em>Qualifier</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class SingleVariableAccessImpl extends ExpressionImpl implements SingleVariableAccess {
	/**
	 * The cached value of the '{@link #getVariable() <em>Variable</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getVariable()
	 * @generated
	 * @ordered
	 */
	protected VariableDeclaration variable;

	/**
	 * The cached value of the '{@link #getQualifier() <em>Qualifier</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getQualifier()
	 * @generated
	 * @ordered
	 */
	protected Expression qualifier;

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected SingleVariableAccessImpl() {
		super();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return JavaPackage.eINSTANCE.getSingleVariableAccess();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public VariableDeclaration getVariable() {
		if (variable != null && variable.eIsProxy()) {
			InternalEObject oldVariable = (InternalEObject)variable;
			variable = (VariableDeclaration)eResolveProxy(oldVariable);
			if (variable != oldVariable) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE, oldVariable, variable));
			}
		}
		return variable;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public VariableDeclaration basicGetVariable() {
		return variable;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetVariable(VariableDeclaration newVariable, NotificationChain msgs) {
		VariableDeclaration oldVariable = variable;
		variable = newVariable;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE, oldVariable, newVariable);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setVariable(VariableDeclaration newVariable) {
		if (newVariable != variable) {
			NotificationChain msgs = null;
			if (variable != null)
				msgs = ((InternalEObject)variable).eInverseRemove(this, JavaPackage.VARIABLE_DECLARATION__USAGE_IN_VARIABLE_ACCESS, VariableDeclaration.class, msgs);
			if (newVariable != null)
				msgs = ((InternalEObject)newVariable).eInverseAdd(this, JavaPackage.VARIABLE_DECLARATION__USAGE_IN_VARIABLE_ACCESS, VariableDeclaration.class, msgs);
			msgs = basicSetVariable(newVariable, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE, newVariable, newVariable));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Expression getQualifier() {
		return qualifier;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetQualifier(Expression newQualifier, NotificationChain msgs) {
		Expression oldQualifier = qualifier;
		qualifier = newQualifier;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER, oldQualifier, newQualifier);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setQualifier(Expression newQualifier) {
		if (newQualifier != qualifier) {
			NotificationChain msgs = null;
			if (qualifier != null)
				msgs = ((InternalEObject)qualifier).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER, null, msgs);
			if (newQualifier != null)
				msgs = ((InternalEObject)newQualifier).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER, null, msgs);
			msgs = basicSetQualifier(newQualifier, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER, newQualifier, newQualifier));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE:
				if (variable != null)
					msgs = ((InternalEObject)variable).eInverseRemove(this, JavaPackage.VARIABLE_DECLARATION__USAGE_IN_VARIABLE_ACCESS, VariableDeclaration.class, msgs);
				return basicSetVariable((VariableDeclaration)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 JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE:
				return basicSetVariable(null, msgs);
			case JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER:
				return basicSetQualifier(null, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE:
				if (resolve) return getVariable();
				return basicGetVariable();
			case JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER:
				return getQualifier();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE:
				setVariable((VariableDeclaration)newValue);
				return;
			case JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER:
				setQualifier((Expression)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE:
				setVariable((VariableDeclaration)null);
				return;
			case JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER:
				setQualifier((Expression)null);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case JavaPackage.SINGLE_VARIABLE_ACCESS__VARIABLE:
				return variable != null;
			case JavaPackage.SINGLE_VARIABLE_ACCESS__QUALIFIER:
				return qualifier != null;
		}
		return super.eIsSet(featureID);
	}

	/**
	 * Improve the basic toString method for debugging purpose.
	 */
	@Override
	public String toString() {
		String result = super.toString();
		
		result = result.concat("\n").concat("variable declaration = " + this.variable);  //$NON-NLS-1$ //$NON-NLS-2$
		
		return result;
	}
} //SingleVariableAccessImpl