/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.api.registry;


/** An event from context indicating that attribute was added or
 * removed. The {@link #getType} can be used to distinguish type of the change.
 *
 * @author  David Konecny
 */
public final class AttributeEvent extends ContextEvent {

    /** This event type is for added attribute. */
    public static final int ATTRIBUTE_ADDED = 1;
    
    /** This event type is for removed attribute. */
    public static final int ATTRIBUTE_REMOVED = 2;
    
    /** This event type is for modified attribute. */
    public static final int ATTRIBUTE_MODIFIED = 3;
    
    private String attributeName;
    private String bindingName;
    private int type;
    
    AttributeEvent(Context source, String bindingName, String attributeName, int type) {
        super(source);
        this.attributeName = attributeName;
        this.bindingName = bindingName;
        this.type = type;
    }

    /**
     * Binding name which attribute has changed or null if context
     * attribute was changed.
     *
     * @return binding name or null for context attribute
     */
    public String getBindingName() {
        return bindingName;
    }

    /**
     * Attribute name.  It can be null what means
     * that concrete source of the change was not clear and that
     * client should reexamine all attributes.
     *
     * @return attribute name; can be null
     */
    public String getAttributeName() {
        return attributeName;
    }

    public int getType() {
        return type;
    }

    public String toString() {
        return "AttributeEvent: [bindingName="+bindingName+", attributeName="+attributeName+", type="+type+"] " + super.toString(); // NOI18N
    }
}