/*******************************************************************************
* Copyright (c) 2000, 2008 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 API and implementation
*******************************************************************************/
package org.eclipse.jdt.core;
import java.util.EventObject;
/**
* An element changed event describes a change to the structure or contents of a tree of Java
* 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 Java model.
* </p>
*
* @see IElementChangedListener
* @see IJavaElementDelta
* @noinstantiate This class is not intended to be instantiated by clients.
* @noextend This class is not intended to be subclassed by clients.
*/
public class ElementChangedEvent extends EventObject {
/**
* Event type constant (bit mask) indicating an after-the-fact report of creations, deletions,
* and modifications to one or more Java element(s) expressed as a hierarchical java 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 JavaModel operation and/or
* resource change.
*
* @see IJavaElementDelta
* @see org.eclipse.core.resources.IResourceChangeEvent
* @see #getDelta()
* @since 2.0
*/
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 Java element(s) expressed as a hierarchical java element
* delta as returned by <code>getDelta</code>.
*
* Note: this notification occurs during the corresponding PRE_AUTO_BUILD resource change
* notification. The delta, which is notified here, only contains information relative to the
* previous JavaModel operations (in other words, it ignores the possible resources which have
* changed outside Java operations). In particular, it is possible that the JavaModel be
* inconsistent with respect to resources, which got modified outside JavaModel operations (it
* will only be fully consistent once the POST_CHANGE notification has occurred).
*
* @see IJavaElementDelta
* @see org.eclipse.core.resources.IResourceChangeEvent
* @see #getDelta()
* @since 2.0
* @deprecated - no longer used, such deltas are now notified during POST_CHANGE
*/
public static final int PRE_AUTO_BUILD= 2;
/**
* Event type constant (bit mask) indicating an after-the-fact report of creations, deletions,
* and modifications to one or more Java element(s) expressed as a hierarchical java element
* delta as returned by <code>getDelta</code>.
*
* Note: this notification occurs as a result of a working copy reconcile operation.
*
* @see IJavaElementDelta
* @see org.eclipse.core.resources.IResourceChangeEvent
* @see #getDelta()
* @since 2.0
*/
public static final int POST_RECONCILE= 4;
private static final long serialVersionUID= -8947240431612844420L; // backward compatible
/*
* 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>IJavaElementDelta</code>).
*
* @param delta the Java element delta.
* @param type the type of delta (ADDED, REMOVED, CHANGED) this event contains
*/
public ElementChangedEvent(IJavaElementDelta delta, int type) {
super(delta);
this.type= type;
}
/**
* Returns the delta describing the change.
*
* @return the delta describing the change
*/
public IJavaElementDelta getDelta() {
return (IJavaElementDelta)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
* @since 2.0
*/
public int getType() {
return this.type;
}
}