/**
 * Copyright (c) 2015 Obeo.
 * 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.htm
 */
package org.eclipse.sirius.expression.impl;

import org.eclipse.emf.common.notify.Notification;

import org.eclipse.emf.ecore.EClass;

import org.eclipse.emf.ecore.impl.ENotificationImpl;

import org.eclipse.sirius.expression.ExpressionPackage;
import org.eclipse.sirius.expression.UserDefinedVariable;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>User Defined Variable</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.eclipse.sirius.expression.impl.UserDefinedVariableImpl#getValueExpression <em>Value Expression</em>}</li>
 * </ul>
 *
 * @generated
 */
public class UserDefinedVariableImpl extends SiriusVariableImpl implements UserDefinedVariable {
	/**
	 * The default value of the '{@link #getValueExpression() <em>Value Expression</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getValueExpression()
	 * @generated
	 * @ordered
	 */
	protected static final String VALUE_EXPRESSION_EDEFAULT = null;

	/**
	 * The cached value of the '{@link #getValueExpression() <em>Value Expression</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getValueExpression()
	 * @generated
	 * @ordered
	 */
	protected String valueExpression = VALUE_EXPRESSION_EDEFAULT;

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

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setValueExpression(String newValueExpression) {
		String oldValueExpression = valueExpression;
		valueExpression = newValueExpression;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, ExpressionPackage.USER_DEFINED_VARIABLE__VALUE_EXPRESSION, oldValueExpression, valueExpression));
	}

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case ExpressionPackage.USER_DEFINED_VARIABLE__VALUE_EXPRESSION:
				setValueExpression((String)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case ExpressionPackage.USER_DEFINED_VARIABLE__VALUE_EXPRESSION:
				setValueExpression(VALUE_EXPRESSION_EDEFAULT);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case ExpressionPackage.USER_DEFINED_VARIABLE__VALUE_EXPRESSION:
				return VALUE_EXPRESSION_EDEFAULT == null ? valueExpression != null : !VALUE_EXPRESSION_EDEFAULT.equals(valueExpression);
		}
		return super.eIsSet(featureID);
	}

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

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

} //UserDefinedVariableImpl