content: /*******************************************************************************
   * Copyright (c) 2000, 2007 IBM Corporation and others.
   * This program and the accompanying materials are made available under the
   * terms of the Eclipse Public License v. 2.0 which is available at
   * http://www.eclipse.org/legal/epl-2.0.
   * 
   * SPDX-License-Identifier: EPL-2.0
   *
   
   *******************************************************************************/
  package org.eclipse.dltk.core;
  
  import java.util.EventObject;
  
  /**
   * An element changed event describes a change to the structure or contents
   * of a tree of script elements. The changes to the elements are described by
   * the associated delta object carried by this event.
   * <p>
   * This class is not intended to be instantiated or subclassed by clients.
   * Instances of this class are automatically created by the script model.
   * </p>
   *
   * @see IElementChangedListener
   * @see IModelElementDelta
   */
  public class ElementChangedEvent extends EventObject {
  	
  	/**
  	 * 
  	 */
  	private static final long serialVersionUID = -8876465148756188700L;
  
  	/**
  	 * Event type constant (bit mask) indicating an after-the-fact 
  	 * report of creations, deletions, and modifications
  	 * to one or more script element(s) expressed as a hierarchical
  	 * model element delta as returned by <code>getDelta()</code>.
  	 *
  	 * Note: this notification occurs during the corresponding POST_CHANGE
  	 * resource change notification, and contains a full delta accounting for
  	 * any Model operation  and/or resource change.
  	 *
  	 * @see IModelElementDelta
  	 * @see org.eclipse.core.resources.IResourceChangeEvent
  	 * @see #getDelta()
  	 *
  	 */
  	public static final int POST_CHANGE = 1;
  
  	/**
  	 * Event type constant (bit mask) indicating an after-the-fact 
  	 * report of creations, deletions, and modifications
  	 * to one or more script element(s) expressed as a hierarchical
  	 * model element delta as returned by <code>getDelta</code>.
  	 *
  	 * Note: this notification occurs as a result of a working copy reconcile
  	 * operation.
  	 *
  	 * @see IModelElementDelta
  	 * @see org.eclipse.core.resources.IResourceChangeEvent
  	 * @see #getDelta()
  	 *
  	 */
  	public static final int 	POST_RECONCILE = 4;	
  		
  	/*
  	 * Event type indicating the nature of this event. 
  	 * It can be a combination either:
  	 *  - POST_CHANGE
  	 *  - PRE_AUTO_BUILD
  	 *  - POST_RECONCILE
  	 */
  	private int type; 
  	
  	/**
  	 * Creates an new element changed event (based on a <code>IModelElementDelta</code>).
  	 *
  	 * @param delta the model element delta.
  	 * @param type the type of delta (ADDED, REMOVED, CHANGED) this event contains
  	 */
  	public ElementChangedEvent(IModelElementDelta delta, int type) {
  		super(delta);
  		this.type = type;
  	}
  	/**
  	 * Returns the delta describing the change.
  	 *
  	 * @return the delta describing the change
  	 */
  	public IModelElementDelta getDelta() {
  		return (IModelElementDelta) this.source;
  	}
  	
  	/**
  	 * Returns the type of event being reported.
  	 *
  	 * @return one of the event type constants
  	 * @see #POST_CHANGE
  	 * @see #PRE_AUTO_BUILD
  	 * @see #POST_RECONCILE
  	 *
  	 */
  	public int getType() {
  		return this.type;
  	}
  }
  