/**
 * <copyright>
 * </copyright>
 *
 * $Id: RelationshipImpl.java,v 1.1 2006/05/11 01:48:01 rgronback Exp $
 */
package org.eclipse.gmf.examples.mindmap.impl;

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

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.gmf.examples.mindmap.MindmapPackage;
import org.eclipse.gmf.examples.mindmap.Relationship;
import org.eclipse.gmf.examples.mindmap.RelationshipType;
import org.eclipse.gmf.examples.mindmap.Topic;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Relationship</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.gmf.examples.mindmap.impl.RelationshipImpl#getLabel <em>Label</em>}</li>
 *   <li>{@link org.eclipse.gmf.examples.mindmap.impl.RelationshipImpl#getSource <em>Source</em>}</li>
 *   <li>{@link org.eclipse.gmf.examples.mindmap.impl.RelationshipImpl#getTarget <em>Target</em>}</li>
 *   <li>{@link org.eclipse.gmf.examples.mindmap.impl.RelationshipImpl#getType <em>Type</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class RelationshipImpl extends EObjectImpl implements Relationship {
	/**
	 * The default value of the '{@link #getLabel() <em>Label</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getLabel()
	 * @generated
	 * @ordered
	 */
	protected static final String LABEL_EDEFAULT = null;

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

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

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

	/**
	 * The default value of the '{@link #getType() <em>Type</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getType()
	 * @generated
	 * @ordered
	 */
	protected static final RelationshipType TYPE_EDEFAULT = RelationshipType.DEPENDENCY_LITERAL;

	/**
	 * The cached value of the '{@link #getType() <em>Type</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getType()
	 * @generated
	 * @ordered
	 */
	protected RelationshipType type = TYPE_EDEFAULT;

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

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setLabel(String newLabel) {
		String oldLabel = label;
		label = newLabel;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, MindmapPackage.RELATIONSHIP__LABEL, oldLabel, label));
	}

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setSource(Topic newSource) {
		Topic oldSource = source;
		source = newSource;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, MindmapPackage.RELATIONSHIP__SOURCE, oldSource, source));
	}

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setTarget(Topic newTarget) {
		Topic oldTarget = target;
		target = newTarget;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, MindmapPackage.RELATIONSHIP__TARGET, oldTarget, target));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public RelationshipType getType() {
		return type;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setType(RelationshipType newType) {
		RelationshipType oldType = type;
		type = newType == null ? TYPE_EDEFAULT : newType;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, MindmapPackage.RELATIONSHIP__TYPE, oldType, type));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case MindmapPackage.RELATIONSHIP__LABEL:
				return getLabel();
			case MindmapPackage.RELATIONSHIP__SOURCE:
				if (resolve) return getSource();
				return basicGetSource();
			case MindmapPackage.RELATIONSHIP__TARGET:
				if (resolve) return getTarget();
				return basicGetTarget();
			case MindmapPackage.RELATIONSHIP__TYPE:
				return getType();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case MindmapPackage.RELATIONSHIP__LABEL:
				setLabel((String)newValue);
				return;
			case MindmapPackage.RELATIONSHIP__SOURCE:
				setSource((Topic)newValue);
				return;
			case MindmapPackage.RELATIONSHIP__TARGET:
				setTarget((Topic)newValue);
				return;
			case MindmapPackage.RELATIONSHIP__TYPE:
				setType((RelationshipType)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eUnset(int featureID) {
		switch (featureID) {
			case MindmapPackage.RELATIONSHIP__LABEL:
				setLabel(LABEL_EDEFAULT);
				return;
			case MindmapPackage.RELATIONSHIP__SOURCE:
				setSource((Topic)null);
				return;
			case MindmapPackage.RELATIONSHIP__TARGET:
				setTarget((Topic)null);
				return;
			case MindmapPackage.RELATIONSHIP__TYPE:
				setType(TYPE_EDEFAULT);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case MindmapPackage.RELATIONSHIP__LABEL:
				return LABEL_EDEFAULT == null ? label != null : !LABEL_EDEFAULT.equals(label);
			case MindmapPackage.RELATIONSHIP__SOURCE:
				return source != null;
			case MindmapPackage.RELATIONSHIP__TARGET:
				return target != null;
			case MindmapPackage.RELATIONSHIP__TYPE:
				return type != TYPE_EDEFAULT;
		}
		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(" (label: ");
		result.append(label);
		result.append(", type: ");
		result.append(type);
		result.append(')');
		return result.toString();
	}

} //RelationshipImpl