EPathImpl.java

/**
 * <copyright>
 * </copyright>
 *
 * $Id$
 */
package no.hal.scxml.scxmlxt.impl;

import java.util.Collection;

import no.hal.scxml.scxmlxt.EPath;
import no.hal.scxml.scxmlxt.EStep;
import no.hal.scxml.scxmlxt.ScxmlxtPackage;
import no.hal.scxml.scxmlxt.VarRef;

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.InternalEObject;

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

import org.eclipse.emf.ecore.util.EObjectContainmentEList;
import org.eclipse.emf.ecore.util.InternalEList;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>EPath</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link no.hal.scxml.scxmlxt.impl.EPathImpl#getVar <em>Var</em>}</li>
 *   <li>{@link no.hal.scxml.scxmlxt.impl.EPathImpl#getSteps <em>Steps</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class EPathImpl extends ExpressionImpl implements EPath {
	/**
	 * The cached value of the '{@link #getVar() <em>Var</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getVar()
	 * @generated
	 * @ordered
	 */
	protected VarRef var;

	/**
	 * The cached value of the '{@link #getSteps() <em>Steps</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getSteps()
	 * @generated
	 * @ordered
	 */
	protected EList<EStep> steps;

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public VarRef getVar() {
		return var;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetVar(VarRef newVar, NotificationChain msgs) {
		VarRef oldVar = var;
		var = newVar;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, ScxmlxtPackage.EPATH__VAR, oldVar, newVar);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setVar(VarRef newVar) {
		if (newVar != var) {
			NotificationChain msgs = null;
			if (var != null)
				msgs = ((InternalEObject)var).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - ScxmlxtPackage.EPATH__VAR, null, msgs);
			if (newVar != null)
				msgs = ((InternalEObject)newVar).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - ScxmlxtPackage.EPATH__VAR, null, msgs);
			msgs = basicSetVar(newVar, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, ScxmlxtPackage.EPATH__VAR, newVar, newVar));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList<EStep> getSteps() {
		if (steps == null) {
			steps = new EObjectContainmentEList<EStep>(EStep.class, this, ScxmlxtPackage.EPATH__STEPS);
		}
		return steps;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case ScxmlxtPackage.EPATH__VAR:
				return basicSetVar(null, msgs);
			case ScxmlxtPackage.EPATH__STEPS:
				return ((InternalEList<?>)getSteps()).basicRemove(otherEnd, 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 ScxmlxtPackage.EPATH__VAR:
				return getVar();
			case ScxmlxtPackage.EPATH__STEPS:
				return getSteps();
		}
		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 ScxmlxtPackage.EPATH__VAR:
				setVar((VarRef)newValue);
				return;
			case ScxmlxtPackage.EPATH__STEPS:
				getSteps().clear();
				getSteps().addAll((Collection<? extends EStep>)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case ScxmlxtPackage.EPATH__VAR:
				setVar((VarRef)null);
				return;
			case ScxmlxtPackage.EPATH__STEPS:
				getSteps().clear();
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case ScxmlxtPackage.EPATH__VAR:
				return var != null;
			case ScxmlxtPackage.EPATH__STEPS:
				return steps != null && !steps.isEmpty();
		}
		return super.eIsSet(featureID);
	}

} //EPathImpl