/**
 * <copyright>
 * </copyright>
 *
 * $Id: TransitionImpl.java,v 1.5 2006/09/07 00:06:20 klow Exp $
 */
package org.eclipse.epf.uma.impl;

import java.util.Collection;
import java.util.List;

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.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.EcoreUtil;
import org.eclipse.epf.uma.Region;
import org.eclipse.epf.uma.Transition;
import org.eclipse.epf.uma.UmaPackage;
import org.eclipse.epf.uma.Vertex;
import org.eclipse.epf.uma.WorkDefinition;
import org.eclipse.epf.uma.ecore.impl.MultiResourceEObject;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Transition</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.epf.uma.impl.TransitionImpl#getWorkDefinition <em>Work Definition</em>}</li>
 *   <li>{@link org.eclipse.epf.uma.impl.TransitionImpl#getContainer_ <em>Container</em>}</li>
 *   <li>{@link org.eclipse.epf.uma.impl.TransitionImpl#getSource <em>Source</em>}</li>
 *   <li>{@link org.eclipse.epf.uma.impl.TransitionImpl#getTarget <em>Target</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class TransitionImpl extends MultiResourceEObject implements Transition {
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	private static final long serialVersionUID = 1L;

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

	/**
	 * The cached value of the '{@link #getSource() <em>Source</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getSource()
	 * @generated
	 * @ordered
	 */
	protected Vertex source = null;

	/**
	 * The cached value of the '{@link #getTarget() <em>Target</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getTarget()
	 * @generated
	 * @ordered
	 */
	protected Vertex target = null;

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

		//UMA-->
		reassignDefaultValues();
		//UMA<--
	}

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public List getWorkDefinition() {
		if (workDefinition == null) {
			workDefinition = new EObjectResolvingEList(WorkDefinition.class,
					this, UmaPackage.TRANSITION__WORK_DEFINITION);
		}
		return workDefinition;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Region getContainer_() {
		if (eContainerFeatureID != UmaPackage.TRANSITION__CONTAINER)
			return null;
		return (Region) eContainer();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Region basicGetContainer() {
		if (eContainerFeatureID != UmaPackage.TRANSITION__CONTAINER)
			return null;
		return (Region) eInternalContainer();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetContainer(Region newContainer,
			NotificationChain msgs) {
		msgs = eBasicSetContainer((InternalEObject) newContainer,
				UmaPackage.TRANSITION__CONTAINER, msgs);
		return msgs;
	}

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Vertex getSource() {
		if (source != null && ((EObject) source).eIsProxy()) {
			InternalEObject oldSource = (InternalEObject) source;
			source = (Vertex) eResolveProxy(oldSource);
			if (source != oldSource) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE,
							UmaPackage.TRANSITION__SOURCE, oldSource, source));
			}
		}
		return source;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Vertex basicGetSource() {
		return source;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetSource(Vertex newSource,
			NotificationChain msgs) {
		Vertex oldSource = source;
		source = newSource;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this,
					Notification.SET, UmaPackage.TRANSITION__SOURCE, oldSource,
					newSource);
			if (msgs == null)
				msgs = notification;
			else
				msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setSource(Vertex newSource) {
		if (newSource != source) {
			NotificationChain msgs = null;
			if (source != null)
				msgs = ((InternalEObject) source).eInverseRemove(this,
						UmaPackage.VERTEX__OUTGOING, Vertex.class, msgs);
			if (newSource != null)
				msgs = ((InternalEObject) newSource).eInverseAdd(this,
						UmaPackage.VERTEX__OUTGOING, Vertex.class, msgs);
			msgs = basicSetSource(newSource, msgs);
			if (msgs != null)
				msgs.dispatch();
		} else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
					UmaPackage.TRANSITION__SOURCE, newSource, newSource));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Vertex getTarget() {
		if (target != null && ((EObject) target).eIsProxy()) {
			InternalEObject oldTarget = (InternalEObject) target;
			target = (Vertex) eResolveProxy(oldTarget);
			if (target != oldTarget) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE,
							UmaPackage.TRANSITION__TARGET, oldTarget, target));
			}
		}
		return target;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Vertex basicGetTarget() {
		return target;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetTarget(Vertex newTarget,
			NotificationChain msgs) {
		Vertex oldTarget = target;
		target = newTarget;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this,
					Notification.SET, UmaPackage.TRANSITION__TARGET, oldTarget,
					newTarget);
			if (msgs == null)
				msgs = notification;
			else
				msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setTarget(Vertex newTarget) {
		if (newTarget != target) {
			NotificationChain msgs = null;
			if (target != null)
				msgs = ((InternalEObject) target).eInverseRemove(this,
						UmaPackage.VERTEX__INCOMING, Vertex.class, msgs);
			if (newTarget != null)
				msgs = ((InternalEObject) newTarget).eInverseAdd(this,
						UmaPackage.VERTEX__INCOMING, Vertex.class, msgs);
			msgs = basicSetTarget(newTarget, msgs);
			if (msgs != null)
				msgs.dispatch();
		} else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
					UmaPackage.TRANSITION__TARGET, newTarget, newTarget));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseAdd(InternalEObject otherEnd,
			int featureID, NotificationChain msgs) {
		switch (featureID) {
		case UmaPackage.TRANSITION__CONTAINER:
			if (eInternalContainer() != null)
				msgs = eBasicRemoveFromContainer(msgs);
			return basicSetContainer((Region) otherEnd, msgs);
		case UmaPackage.TRANSITION__SOURCE:
			if (source != null)
				msgs = ((InternalEObject) source).eInverseRemove(this,
						UmaPackage.VERTEX__OUTGOING, Vertex.class, msgs);
			return basicSetSource((Vertex) otherEnd, msgs);
		case UmaPackage.TRANSITION__TARGET:
			if (target != null)
				msgs = ((InternalEObject) target).eInverseRemove(this,
						UmaPackage.VERTEX__INCOMING, Vertex.class, msgs);
			return basicSetTarget((Vertex) otherEnd, msgs);
		}
		return super.eInverseAdd(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseRemove(InternalEObject otherEnd,
			int featureID, NotificationChain msgs) {
		switch (featureID) {
		case UmaPackage.TRANSITION__CONTAINER:
			return basicSetContainer(null, msgs);
		case UmaPackage.TRANSITION__SOURCE:
			return basicSetSource(null, msgs);
		case UmaPackage.TRANSITION__TARGET:
			return basicSetTarget(null, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eBasicRemoveFromContainerFeature(
			NotificationChain msgs) {
		switch (eContainerFeatureID) {
		case UmaPackage.TRANSITION__CONTAINER:
			return eInternalContainer().eInverseRemove(this,
					UmaPackage.REGION__TRANSITION, Region.class, msgs);
		}
		return super.eBasicRemoveFromContainerFeature(msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
		case UmaPackage.TRANSITION__WORK_DEFINITION:
			return getWorkDefinition();
		case UmaPackage.TRANSITION__CONTAINER:
			if (resolve)
				return getContainer_();
			return basicGetContainer();
		case UmaPackage.TRANSITION__SOURCE:
			if (resolve)
				return getSource();
			return basicGetSource();
		case UmaPackage.TRANSITION__TARGET:
			if (resolve)
				return getTarget();
			return basicGetTarget();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
		case UmaPackage.TRANSITION__WORK_DEFINITION:
			getWorkDefinition().clear();
			getWorkDefinition().addAll((Collection) newValue);
			return;
		case UmaPackage.TRANSITION__CONTAINER:
			setContainer((Region) newValue);
			return;
		case UmaPackage.TRANSITION__SOURCE:
			setSource((Vertex) newValue);
			return;
		case UmaPackage.TRANSITION__TARGET:
			setTarget((Vertex) newValue);
			return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eUnset(int featureID) {
		switch (featureID) {
		case UmaPackage.TRANSITION__WORK_DEFINITION:
			getWorkDefinition().clear();
			return;
		case UmaPackage.TRANSITION__CONTAINER:
			setContainer((Region) null);
			return;
		case UmaPackage.TRANSITION__SOURCE:
			setSource((Vertex) null);
			return;
		case UmaPackage.TRANSITION__TARGET:
			setTarget((Vertex) null);
			return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean eIsSet(int featureID) {
		//UMA-->
		EStructuralFeature feature = getFeatureWithOverridenDefaultValue(featureID);
		if (feature != null) {
			return isFeatureWithOverridenDefaultValueSet(feature);
		}
		//UMA<--		
		switch (featureID) {
		case UmaPackage.TRANSITION__WORK_DEFINITION:
			return workDefinition != null && !workDefinition.isEmpty();
		case UmaPackage.TRANSITION__CONTAINER:
			return basicGetContainer() != null;
		case UmaPackage.TRANSITION__SOURCE:
			return source != null;
		case UmaPackage.TRANSITION__TARGET:
			return target != null;
		}
		return super.eIsSet(featureID);
	}

} //TransitionImpl