plugins/org.eclipse.epf.diagram/src/org/eclipse/epf/diagram/model/impl/LinkImpl.java - gerrit/epf/org.eclipse.epf.archive - Git at Google

 //------------------------------------------------------------------------------
 // Copyright (c) 2005, 2006 IBM Corporation and others.
 // 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:
 // IBM Corporation - initial implementation
 //------------------------------------------------------------------------------
 package org.eclipse.epf.diagram.model.impl;

 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;

 import org.eclipse.draw2d.AbsoluteBendpoint;
 import org.eclipse.draw2d.geometry.Point;
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.common.notify.NotificationChain;
 import org.eclipse.emf.common.notify.impl.AdapterImpl;
 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.EDataTypeUniqueEList;
 import org.eclipse.emf.ecore.util.EcoreUtil;
 import org.eclipse.epf.diagram.model.Link;
 import org.eclipse.epf.diagram.model.ModelPackage;
 import org.eclipse.epf.diagram.model.Node;
 import org.eclipse.epf.diagram.model.util.GraphicalDataHelper;
 import org.eclipse.epf.uma.GraphConnector;
 import org.eclipse.epf.uma.GraphEdge;


 /**
  * <!-- begin-user-doc --> An implementation of the model object '<em><b>Link</b></em>'.
  * <!-- end-user-doc -->
  * <p>
  * The following features are implemented:
  * <ul>
  *   <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getName <em>Name</em>}</li>
  *   <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getSource <em>Source</em>}</li>
  *   <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getTarget <em>Target</em>}</li>
  *   <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getBendpoints <em>Bendpoints</em>}</li>
  *   <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getSourceEndPoint <em>Source End Point</em>}</li>
  *   <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getTargetEndPoint <em>Target End Point</em>}</li>
  * </ul>
  * </p>
  *
  * @generated
  */
 public class LinkImpl extends LinkedObjectImpl implements Link {
 	/**
 	 * The default value of the '{@link #getName() <em>Name</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @see #getName()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final String NAME_EDEFAULT = "";

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

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

 	/**
 	 * The cached value of the '{@link #getBendpoints() <em>Bendpoints</em>}' attribute list.
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @see #getBendpoints()
 	 * @generated
 	 * @ordered
 	 */
 	protected EList bendpoints = null;

 	/**
 	 * The default value of the '{@link #getSourceEndPoint() <em>Source End Point</em>}' attribute.
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @see #getSourceEndPoint()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final Point SOURCE_END_POINT_EDEFAULT = null;

 	/**
 	 * The cached value of the '{@link #getSourceEndPoint() <em>Source End Point</em>}' attribute.
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @see #getSourceEndPoint()
 	 * @generated
 	 * @ordered
 	 */
 	protected Point sourceEndPoint = SOURCE_END_POINT_EDEFAULT;

 	/**
 	 * The default value of the '{@link #getTargetEndPoint() <em>Target End Point</em>}' attribute.
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @see #getTargetEndPoint()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final Point TARGET_END_POINT_EDEFAULT = null;

 	/**
 	 * The cached value of the '{@link #getTargetEndPoint() <em>Target End Point</em>}' attribute.
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @see #getTargetEndPoint()
 	 * @generated
 	 * @ordered
 	 */
 	protected Point targetEndPoint = TARGET_END_POINT_EDEFAULT;

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

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

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

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void setName(String newName) {
 		String oldName = name;
 		name = newName;
 		if (eNotificationRequired())
 			eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__NAME, oldName, name));
 	}

 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
 	public Node getSource() {
 		if (eContainerFeatureID != ModelPackage.LINK__SOURCE) return null;
 		return (Node)eContainer();
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public NotificationChain basicSetSource(Node newSource, NotificationChain msgs) {
 		msgs = eBasicSetContainer((InternalEObject)newSource, ModelPackage.LINK__SOURCE, msgs);
 		return msgs;
 	}

 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void setSource(Node newSource) {
 		if (newSource != eInternalContainer() || (eContainerFeatureID != ModelPackage.LINK__SOURCE && newSource != null)) {
 			if (EcoreUtil.isAncestor(this, newSource))
 				throw new IllegalArgumentException("Recursive containment not allowed for " + toString());
 			NotificationChain msgs = null;
 			if (eInternalContainer() != null)
 				msgs = eBasicRemoveFromContainer(msgs);
 			if (newSource != null)
 				msgs = ((InternalEObject)newSource).eInverseAdd(this, ModelPackage.NODE__OUTGOING_CONNECTIONS, Node.class, msgs);
 			msgs = basicSetSource(newSource, msgs);
 			if (msgs != null) msgs.dispatch();
 		}
 		else if (eNotificationRequired())
 			eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__SOURCE, newSource, newSource));
 	}

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

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

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

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

 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
 	public EList getBendpoints() {
 		if (bendpoints == null) {
 			bendpoints = new EDataTypeUniqueEList(AbsoluteBendpoint.class, this, ModelPackage.LINK__BENDPOINTS);
 		}
 		return bendpoints;
 	}

 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
 	public Point getSourceEndPoint() {
 		return sourceEndPoint;
 	}

 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void setSourceEndPoint(Point newSourceEndPoint) {
 		Point oldSourceEndPoint = sourceEndPoint;
 		sourceEndPoint = newSourceEndPoint;
 		if (eNotificationRequired())
 			eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__SOURCE_END_POINT, oldSourceEndPoint, sourceEndPoint));
 	}

 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
 	public Point getTargetEndPoint() {
 		return targetEndPoint;
 	}

 	/**
 	 * <!-- begin-user-doc --> <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void setTargetEndPoint(Point newTargetEndPoint) {
 		Point oldTargetEndPoint = targetEndPoint;
 		targetEndPoint = newTargetEndPoint;
 		if (eNotificationRequired())
 			eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__TARGET_END_POINT, oldTargetEndPoint, targetEndPoint));
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
 		switch (featureID) {
 			case ModelPackage.LINK__SOURCE:
 				if (eInternalContainer() != null)
 					msgs = eBasicRemoveFromContainer(msgs);
 				return basicSetSource((Node)otherEnd, msgs);
 			case ModelPackage.LINK__TARGET:
 				if (target != null)
 					msgs = ((InternalEObject)target).eInverseRemove(this, ModelPackage.NODE__INCOMING_CONNECTIONS, Node.class, msgs);
 				return basicSetTarget((Node)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 ModelPackage.LINK__SOURCE:
 				return basicSetSource(null, msgs);
 			case ModelPackage.LINK__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 ModelPackage.LINK__SOURCE:
 				return eInternalContainer().eInverseRemove(this, ModelPackage.NODE__OUTGOING_CONNECTIONS, Node.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 ModelPackage.LINK__NAME:
 				return getName();
 			case ModelPackage.LINK__SOURCE:
 				return getSource();
 			case ModelPackage.LINK__TARGET:
 				if (resolve) return getTarget();
 				return basicGetTarget();
 			case ModelPackage.LINK__BENDPOINTS:
 				return getBendpoints();
 			case ModelPackage.LINK__SOURCE_END_POINT:
 				return getSourceEndPoint();
 			case ModelPackage.LINK__TARGET_END_POINT:
 				return getTargetEndPoint();
 		}
 		return super.eGet(featureID, resolve, coreType);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void eSet(int featureID, Object newValue) {
 		switch (featureID) {
 			case ModelPackage.LINK__NAME:
 				setName((String)newValue);
 				return;
 			case ModelPackage.LINK__SOURCE:
 				setSource((Node)newValue);
 				return;
 			case ModelPackage.LINK__TARGET:
 				setTarget((Node)newValue);
 				return;
 			case ModelPackage.LINK__BENDPOINTS:
 				getBendpoints().clear();
 				getBendpoints().addAll((Collection)newValue);
 				return;
 			case ModelPackage.LINK__SOURCE_END_POINT:
 				setSourceEndPoint((Point)newValue);
 				return;
 			case ModelPackage.LINK__TARGET_END_POINT:
 				setTargetEndPoint((Point)newValue);
 				return;
 		}
 		super.eSet(featureID, newValue);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public void eUnset(int featureID) {
 		switch (featureID) {
 			case ModelPackage.LINK__NAME:
 				setName(NAME_EDEFAULT);
 				return;
 			case ModelPackage.LINK__SOURCE:
 				setSource((Node)null);
 				return;
 			case ModelPackage.LINK__TARGET:
 				setTarget((Node)null);
 				return;
 			case ModelPackage.LINK__BENDPOINTS:
 				getBendpoints().clear();
 				return;
 			case ModelPackage.LINK__SOURCE_END_POINT:
 				setSourceEndPoint(SOURCE_END_POINT_EDEFAULT);
 				return;
 			case ModelPackage.LINK__TARGET_END_POINT:
 				setTargetEndPoint(TARGET_END_POINT_EDEFAULT);
 				return;
 		}
 		super.eUnset(featureID);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public boolean eIsSet(int featureID) {
 		switch (featureID) {
 			case ModelPackage.LINK__NAME:
 				return NAME_EDEFAULT == null ? name != null : !NAME_EDEFAULT.equals(name);
 			case ModelPackage.LINK__SOURCE:
 				return getSource() != null;
 			case ModelPackage.LINK__TARGET:
 				return target != null;
 			case ModelPackage.LINK__BENDPOINTS:
 				return bendpoints != null && !bendpoints.isEmpty();
 			case ModelPackage.LINK__SOURCE_END_POINT:
 				return SOURCE_END_POINT_EDEFAULT == null ? sourceEndPoint != null : !SOURCE_END_POINT_EDEFAULT.equals(sourceEndPoint);
 			case ModelPackage.LINK__TARGET_END_POINT:
 				return TARGET_END_POINT_EDEFAULT == null ? targetEndPoint != null : !TARGET_END_POINT_EDEFAULT.equals(targetEndPoint);
 		}
 		return super.eIsSet(featureID);
 	}

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

 		StringBuffer result = new StringBuffer(super.toString());
 		result.append(" (name: ");
 		result.append(name);
 		result.append(", bendpoints: ");
 		result.append(bendpoints);
 		result.append(", sourceEndPoint: ");
 		result.append(sourceEndPoint);
 		result.append(", targetEndPoint: ");
 		result.append(targetEndPoint);
 		result.append(')');
 		return result.toString();
 	}

 	public void setObject(Object newObject) {
 		super.setObject(newObject);

 		if (newObject == null)
 			return;

 		GraphEdge edge = (GraphEdge) newObject;

 		// copy bendpoints from edge
 		//
 		for (Iterator iter = edge.getWaypoints().iterator(); iter.hasNext();) {
 			getBendpoints().add(
 					new AbsoluteBendpoint(GraphicalDataHelper
 							.toPoint((org.eclipse.epf.uma.Point) iter.next())));
 		}

 		// copy end points from GraphConnectors
 		//
 		if (getSourceGraphConnector().getPosition() != null) {
 			sourceEndPoint = GraphicalDataHelper
 					.toPoint(getSourceGraphConnector().getPosition());
 		}
 		if (getTargetGraphConnector().getPosition() != null) {
 			targetEndPoint = GraphicalDataHelper
 					.toPoint(getTargetGraphConnector().getPosition());
 		}

 		eAdapters().add(new AdapterImpl() {
 			/*
 			 * (non-Javadoc)
 			 *
 			 * @see org.eclipse.emf.common.notify.impl.AdapterImpl#notifyChanged(org.eclipse.emf.common.notify.Notification)
 			 */
 			public void notifyChanged(Notification msg) {
 				Point p;
 				GraphEdge edge = (GraphEdge) getObject();
 				switch (msg.getFeatureID(Link.class)) {
 				case ModelPackage.LINK__BENDPOINTS:
 					switch (msg.getEventType()) {
 					case Notification.ADD:
 						p = (AbsoluteBendpoint) msg.getNewValue();
 						int index = msg.getPosition();
 						org.eclipse.epf.uma.Point umaPoint = GraphicalDataHelper
 								.newModelPoint(p.x, p.y);
 						if (index == Notification.NO_INDEX) {
 							edge.getWaypoints().add(umaPoint);
 						} else {
 							edge.getWaypoints().add(index, umaPoint);
 						}
 						return;
 					case Notification.REMOVE:
 						// p = (AbsoluteBendpoint) msg.getOldValue();
 						// edge.getWaypoints().remove(GraphicalDataHelper.newModelPoint(p.x,
 						// p.y));

 						index = msg.getPosition();
 						if (index == Notification.NO_INDEX) {
 							edge.getWaypoints().remove(msg.getPosition());
 						} else {
 							edge.getWaypoints().remove(index);
 						}

 						return;
 					case Notification.ADD_MANY:
 						Collection collection = (Collection) msg.getNewValue();
 						ArrayList umaPoints = new ArrayList();
 						for (Iterator iter = collection.iterator(); iter
 								.hasNext();) {
 							p = (AbsoluteBendpoint) iter.next();
 							umaPoints.add(GraphicalDataHelper.newModelPoint(
 									p.x, p.y));
 						}
 						index = msg.getPosition();
 						if (index == Notification.NO_INDEX) {
 							edge.getWaypoints().addAll(umaPoints);
 						} else {
 							edge.getWaypoints().addAll(index, umaPoints);
 						}
 						return;
 					// case Notification.REMOVE_MANY:
 					// collection = (Collection) msg.getOldValue();
 					// for (Iterator iter = collection.iterator(); iter
 					// .hasNext();) {
 					// p = (AbsoluteBendpoint) msg.getOldValue();
 					// edge.getWaypoints().remove(GraphicalDataHelper.newModelPoint(p.x,
 					// p.y));
 					// }
 					// return;
 					case Notification.SET:
 						p = (AbsoluteBendpoint) msg.getNewValue();
 //						Point oldp = (AbsoluteBendpoint) msg.getOldValue();
 						int pointIndex = msg.getPosition();
 						org.eclipse.epf.uma.Point newUmaPoint = GraphicalDataHelper
 								.newModelPoint(p.x, p.y);
 //						org.eclipse.epf.uma.Point oldUmaPoint = GraphicalDataHelper
 //								.newModelPoint(oldp.x, oldp.y);
 						if (pointIndex == Notification.NO_INDEX) {
 							System.out
 									.println("Index for bendpoint is -1, Cannot set the bend point location."); //$NON-NLS-1$
 						} else {
 							edge.getWaypoints().remove(pointIndex);
 							edge.getWaypoints().add(pointIndex, newUmaPoint);
 						}
 						return;
 					}
 					return;
 				case ModelPackage.LINK__SOURCE_END_POINT:
 					p = (Point) msg.getNewValue();
 					// System.out.println(".notifyChanged(): new source end
 					// point: " + p + ". " + getSource());
 					if (p != null) {
 						// translate to relative position
 						//
 						// p.translate(getSource().getLocation().getNegated());
 						getSourceGraphConnector().setPosition(
 								GraphicalDataHelper.newModelPoint(p.x, p.y));
 					}
 					return;
 				case ModelPackage.LINK__TARGET_END_POINT:
 					p = (Point) msg.getNewValue();
 					// System.out.println(".notifyChanged(): new target end
 					// point: " + p + ". " + getTarget());
 					if (p != null) {
 						// translate to relative position
 						//
 						// p.translate(LinkImpl.this.getTarget().getLocation().getNegated());
 						getTargetGraphConnector().setPosition(
 								GraphicalDataHelper.newModelPoint(p.x, p.y));
 					}
 					return;
 				case ModelPackage.LINK__SOURCE:
 					// TODO
 					return;
 				case ModelPackage.LINK__TARGET:
 					// TODO
 					return;
 				}
 			}
 		});
 	}

 	private GraphConnector getSourceGraphConnector() {
 		return (GraphConnector) ((GraphEdge) getObject()).getAnchor().get(0);
 	}

 	private GraphConnector getTargetGraphConnector() {
 		return (GraphConnector) ((GraphEdge) getObject()).getAnchor().get(1);
 	}

 } // LinkImpl
	//------------------------------------------------------------------------------
	// Copyright (c) 2005, 2006 IBM Corporation and others.
	// 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:
	// IBM Corporation - initial implementation
	//------------------------------------------------------------------------------
	package org.eclipse.epf.diagram.model.impl;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Iterator;

	import org.eclipse.draw2d.AbsoluteBendpoint;
	import org.eclipse.draw2d.geometry.Point;
	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.emf.common.notify.NotificationChain;
	import org.eclipse.emf.common.notify.impl.AdapterImpl;
	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.EDataTypeUniqueEList;
	import org.eclipse.emf.ecore.util.EcoreUtil;
	import org.eclipse.epf.diagram.model.Link;
	import org.eclipse.epf.diagram.model.ModelPackage;
	import org.eclipse.epf.diagram.model.Node;
	import org.eclipse.epf.diagram.model.util.GraphicalDataHelper;
	import org.eclipse.epf.uma.GraphConnector;
	import org.eclipse.epf.uma.GraphEdge;


	/**
	* <!-- begin-user-doc --> An implementation of the model object '<em><b>Link</b></em>'.
	* <!-- end-user-doc -->
	* <p>
	* The following features are implemented:
	* <ul>
	* <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getName <em>Name</em>}</li>
	* <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getSource <em>Source</em>}</li>
	* <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getTarget <em>Target</em>}</li>
	* <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getBendpoints <em>Bendpoints</em>}</li>
	* <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getSourceEndPoint <em>Source End Point</em>}</li>
	* <li>{@link org.eclipse.epf.diagram.model.impl.LinkImpl#getTargetEndPoint <em>Target End Point</em>}</li>
	* </ul>
	* </p>
	*
	* @generated
	*/
	public class LinkImpl extends LinkedObjectImpl implements Link {
	/**
	* The default value of the '{@link #getName() <em>Name</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @see #getName()
	* @generated
	* @ordered
	*/
	protected static final String NAME_EDEFAULT = "";

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

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

	/**
	* The cached value of the '{@link #getBendpoints() <em>Bendpoints</em>}' attribute list.
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @see #getBendpoints()
	* @generated
	* @ordered
	*/
	protected EList bendpoints = null;

	/**
	* The default value of the '{@link #getSourceEndPoint() <em>Source End Point</em>}' attribute.
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @see #getSourceEndPoint()
	* @generated
	* @ordered
	*/
	protected static final Point SOURCE_END_POINT_EDEFAULT = null;

	/**
	* The cached value of the '{@link #getSourceEndPoint() <em>Source End Point</em>}' attribute.
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @see #getSourceEndPoint()
	* @generated
	* @ordered
	*/
	protected Point sourceEndPoint = SOURCE_END_POINT_EDEFAULT;

	/**
	* The default value of the '{@link #getTargetEndPoint() <em>Target End Point</em>}' attribute.
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @see #getTargetEndPoint()
	* @generated
	* @ordered
	*/
	protected static final Point TARGET_END_POINT_EDEFAULT = null;

	/**
	* The cached value of the '{@link #getTargetEndPoint() <em>Target End Point</em>}' attribute.
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @see #getTargetEndPoint()
	* @generated
	* @ordered
	*/
	protected Point targetEndPoint = TARGET_END_POINT_EDEFAULT;

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

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

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

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public void setName(String newName) {
	String oldName = name;
	name = newName;
	if (eNotificationRequired())
	eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__NAME, oldName, name));
	}

	/**
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @generated
	*/
	public Node getSource() {
	if (eContainerFeatureID != ModelPackage.LINK__SOURCE) return null;
	return (Node)eContainer();
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public NotificationChain basicSetSource(Node newSource, NotificationChain msgs) {
	msgs = eBasicSetContainer((InternalEObject)newSource, ModelPackage.LINK__SOURCE, msgs);
	return msgs;
	}

	/**
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @generated
	*/
	public void setSource(Node newSource) {
	if (newSource != eInternalContainer() \|\| (eContainerFeatureID != ModelPackage.LINK__SOURCE && newSource != null)) {
	if (EcoreUtil.isAncestor(this, newSource))
	throw new IllegalArgumentException("Recursive containment not allowed for " + toString());
	NotificationChain msgs = null;
	if (eInternalContainer() != null)
	msgs = eBasicRemoveFromContainer(msgs);
	if (newSource != null)
	msgs = ((InternalEObject)newSource).eInverseAdd(this, ModelPackage.NODE__OUTGOING_CONNECTIONS, Node.class, msgs);
	msgs = basicSetSource(newSource, msgs);
	if (msgs != null) msgs.dispatch();
	}
	else if (eNotificationRequired())
	eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__SOURCE, newSource, newSource));
	}

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

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

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

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

	/**
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @generated
	*/
	public EList getBendpoints() {
	if (bendpoints == null) {
	bendpoints = new EDataTypeUniqueEList(AbsoluteBendpoint.class, this, ModelPackage.LINK__BENDPOINTS);
	}
	return bendpoints;
	}

	/**
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @generated
	*/
	public Point getSourceEndPoint() {
	return sourceEndPoint;
	}

	/**
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @generated
	*/
	public void setSourceEndPoint(Point newSourceEndPoint) {
	Point oldSourceEndPoint = sourceEndPoint;
	sourceEndPoint = newSourceEndPoint;
	if (eNotificationRequired())
	eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__SOURCE_END_POINT, oldSourceEndPoint, sourceEndPoint));
	}

	/**
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @generated
	*/
	public Point getTargetEndPoint() {
	return targetEndPoint;
	}

	/**
	* <!-- begin-user-doc --> <!-- end-user-doc -->
	* @generated
	*/
	public void setTargetEndPoint(Point newTargetEndPoint) {
	Point oldTargetEndPoint = targetEndPoint;
	targetEndPoint = newTargetEndPoint;
	if (eNotificationRequired())
	eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.LINK__TARGET_END_POINT, oldTargetEndPoint, targetEndPoint));
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
	switch (featureID) {
	case ModelPackage.LINK__SOURCE:
	if (eInternalContainer() != null)
	msgs = eBasicRemoveFromContainer(msgs);
	return basicSetSource((Node)otherEnd, msgs);
	case ModelPackage.LINK__TARGET:
	if (target != null)
	msgs = ((InternalEObject)target).eInverseRemove(this, ModelPackage.NODE__INCOMING_CONNECTIONS, Node.class, msgs);
	return basicSetTarget((Node)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 ModelPackage.LINK__SOURCE:
	return basicSetSource(null, msgs);
	case ModelPackage.LINK__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 ModelPackage.LINK__SOURCE:
	return eInternalContainer().eInverseRemove(this, ModelPackage.NODE__OUTGOING_CONNECTIONS, Node.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 ModelPackage.LINK__NAME:
	return getName();
	case ModelPackage.LINK__SOURCE:
	return getSource();
	case ModelPackage.LINK__TARGET:
	if (resolve) return getTarget();
	return basicGetTarget();
	case ModelPackage.LINK__BENDPOINTS:
	return getBendpoints();
	case ModelPackage.LINK__SOURCE_END_POINT:
	return getSourceEndPoint();
	case ModelPackage.LINK__TARGET_END_POINT:
	return getTargetEndPoint();
	}
	return super.eGet(featureID, resolve, coreType);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public void eSet(int featureID, Object newValue) {
	switch (featureID) {
	case ModelPackage.LINK__NAME:
	setName((String)newValue);
	return;
	case ModelPackage.LINK__SOURCE:
	setSource((Node)newValue);
	return;
	case ModelPackage.LINK__TARGET:
	setTarget((Node)newValue);
	return;
	case ModelPackage.LINK__BENDPOINTS:
	getBendpoints().clear();
	getBendpoints().addAll((Collection)newValue);
	return;
	case ModelPackage.LINK__SOURCE_END_POINT:
	setSourceEndPoint((Point)newValue);
	return;
	case ModelPackage.LINK__TARGET_END_POINT:
	setTargetEndPoint((Point)newValue);
	return;
	}
	super.eSet(featureID, newValue);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public void eUnset(int featureID) {
	switch (featureID) {
	case ModelPackage.LINK__NAME:
	setName(NAME_EDEFAULT);
	return;
	case ModelPackage.LINK__SOURCE:
	setSource((Node)null);
	return;
	case ModelPackage.LINK__TARGET:
	setTarget((Node)null);
	return;
	case ModelPackage.LINK__BENDPOINTS:
	getBendpoints().clear();
	return;
	case ModelPackage.LINK__SOURCE_END_POINT:
	setSourceEndPoint(SOURCE_END_POINT_EDEFAULT);
	return;
	case ModelPackage.LINK__TARGET_END_POINT:
	setTargetEndPoint(TARGET_END_POINT_EDEFAULT);
	return;
	}
	super.eUnset(featureID);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	* @generated
	*/
	public boolean eIsSet(int featureID) {
	switch (featureID) {
	case ModelPackage.LINK__NAME:
	return NAME_EDEFAULT == null ? name != null : !NAME_EDEFAULT.equals(name);
	case ModelPackage.LINK__SOURCE:
	return getSource() != null;
	case ModelPackage.LINK__TARGET:
	return target != null;
	case ModelPackage.LINK__BENDPOINTS:
	return bendpoints != null && !bendpoints.isEmpty();
	case ModelPackage.LINK__SOURCE_END_POINT:
	return SOURCE_END_POINT_EDEFAULT == null ? sourceEndPoint != null : !SOURCE_END_POINT_EDEFAULT.equals(sourceEndPoint);
	case ModelPackage.LINK__TARGET_END_POINT:
	return TARGET_END_POINT_EDEFAULT == null ? targetEndPoint != null : !TARGET_END_POINT_EDEFAULT.equals(targetEndPoint);
	}
	return super.eIsSet(featureID);
	}

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

	StringBuffer result = new StringBuffer(super.toString());
	result.append(" (name: ");
	result.append(name);
	result.append(", bendpoints: ");
	result.append(bendpoints);
	result.append(", sourceEndPoint: ");
	result.append(sourceEndPoint);
	result.append(", targetEndPoint: ");
	result.append(targetEndPoint);
	result.append(')');
	return result.toString();
	}

	public void setObject(Object newObject) {
	super.setObject(newObject);

	if (newObject == null)
	return;

	GraphEdge edge = (GraphEdge) newObject;

	// copy bendpoints from edge
	//
	for (Iterator iter = edge.getWaypoints().iterator(); iter.hasNext();) {
	getBendpoints().add(
	new AbsoluteBendpoint(GraphicalDataHelper
	.toPoint((org.eclipse.epf.uma.Point) iter.next())));
	}

	// copy end points from GraphConnectors
	//
	if (getSourceGraphConnector().getPosition() != null) {
	sourceEndPoint = GraphicalDataHelper
	.toPoint(getSourceGraphConnector().getPosition());
	}
	if (getTargetGraphConnector().getPosition() != null) {
	targetEndPoint = GraphicalDataHelper
	.toPoint(getTargetGraphConnector().getPosition());
	}

	eAdapters().add(new AdapterImpl() {
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.common.notify.impl.AdapterImpl#notifyChanged(org.eclipse.emf.common.notify.Notification)
	*/
	public void notifyChanged(Notification msg) {
	Point p;
	GraphEdge edge = (GraphEdge) getObject();
	switch (msg.getFeatureID(Link.class)) {
	case ModelPackage.LINK__BENDPOINTS:
	switch (msg.getEventType()) {
	case Notification.ADD:
	p = (AbsoluteBendpoint) msg.getNewValue();
	int index = msg.getPosition();
	org.eclipse.epf.uma.Point umaPoint = GraphicalDataHelper
	.newModelPoint(p.x, p.y);
	if (index == Notification.NO_INDEX) {
	edge.getWaypoints().add(umaPoint);
	} else {
	edge.getWaypoints().add(index, umaPoint);
	}
	return;
	case Notification.REMOVE:
	// p = (AbsoluteBendpoint) msg.getOldValue();
	// edge.getWaypoints().remove(GraphicalDataHelper.newModelPoint(p.x,
	// p.y));

	index = msg.getPosition();
	if (index == Notification.NO_INDEX) {
	edge.getWaypoints().remove(msg.getPosition());
	} else {
	edge.getWaypoints().remove(index);
	}

	return;
	case Notification.ADD_MANY:
	Collection collection = (Collection) msg.getNewValue();
	ArrayList umaPoints = new ArrayList();
	for (Iterator iter = collection.iterator(); iter
	.hasNext();) {
	p = (AbsoluteBendpoint) iter.next();
	umaPoints.add(GraphicalDataHelper.newModelPoint(
	p.x, p.y));
	}
	index = msg.getPosition();
	if (index == Notification.NO_INDEX) {
	edge.getWaypoints().addAll(umaPoints);
	} else {
	edge.getWaypoints().addAll(index, umaPoints);
	}
	return;
	// case Notification.REMOVE_MANY:
	// collection = (Collection) msg.getOldValue();
	// for (Iterator iter = collection.iterator(); iter
	// .hasNext();) {
	// p = (AbsoluteBendpoint) msg.getOldValue();
	// edge.getWaypoints().remove(GraphicalDataHelper.newModelPoint(p.x,
	// p.y));
	// }
	// return;
	case Notification.SET:
	p = (AbsoluteBendpoint) msg.getNewValue();
	// Point oldp = (AbsoluteBendpoint) msg.getOldValue();
	int pointIndex = msg.getPosition();
	org.eclipse.epf.uma.Point newUmaPoint = GraphicalDataHelper
	.newModelPoint(p.x, p.y);
	// org.eclipse.epf.uma.Point oldUmaPoint = GraphicalDataHelper
	// .newModelPoint(oldp.x, oldp.y);
	if (pointIndex == Notification.NO_INDEX) {
	System.out
	.println("Index for bendpoint is -1, Cannot set the bend point location."); //$NON-NLS-1$
	} else {
	edge.getWaypoints().remove(pointIndex);
	edge.getWaypoints().add(pointIndex, newUmaPoint);
	}
	return;
	}
	return;
	case ModelPackage.LINK__SOURCE_END_POINT:
	p = (Point) msg.getNewValue();
	// System.out.println(".notifyChanged(): new source end
	// point: " + p + ". " + getSource());
	if (p != null) {
	// translate to relative position
	//
	// p.translate(getSource().getLocation().getNegated());
	getSourceGraphConnector().setPosition(
	GraphicalDataHelper.newModelPoint(p.x, p.y));
	}
	return;
	case ModelPackage.LINK__TARGET_END_POINT:
	p = (Point) msg.getNewValue();
	// System.out.println(".notifyChanged(): new target end
	// point: " + p + ". " + getTarget());
	if (p != null) {
	// translate to relative position
	//
	// p.translate(LinkImpl.this.getTarget().getLocation().getNegated());
	getTargetGraphConnector().setPosition(
	GraphicalDataHelper.newModelPoint(p.x, p.y));
	}
	return;
	case ModelPackage.LINK__SOURCE:
	// TODO
	return;
	case ModelPackage.LINK__TARGET:
	// TODO
	return;
	}
	}
	});
	}

	private GraphConnector getSourceGraphConnector() {
	return (GraphConnector) ((GraphEdge) getObject()).getAnchor().get(0);
	}

	private GraphConnector getTargetGraphConnector() {
	return (GraphConnector) ((GraphEdge) getObject()).getAnchor().get(1);
	}

	} // LinkImpl