CheckStateChangedEvent


1   /*******************************************************************************
2    * Copyright (c) 2000, 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.jface.viewers;
12  
13  import java.util.EventObject  ;
14  
15  /**
16   * Event object describing a change to the checked state
17   * of a viewer element.
18   *
19   * @see ICheckStateListener
20   */
21  public class CheckStateChangedEvent extends EventObject   {
22  
23      /**
24       * Generated serial version UID for this class.
25       * @since 3.1
26       */
27      private static final long serialVersionUID = 3256443603340244789L;
28  
29      /**
30       * The viewer element.
31       */
32      private Object   element;
33  
34      /**
35       * The checked state.
36       */
37      private boolean state;
38  
39      /**
40       * Creates a new event for the given source, element, and checked state.
41       *
42       * @param source the source
43       * @param element the element
44       * @param state the checked state
45       */
46      public CheckStateChangedEvent(ICheckable source, Object   element,
47              boolean state) {
48          super(source);
49          this.element = element;
50          this.state = state;
51      }
52  
53      /**
54       * Returns the checkable that is the source of this event.
55       *
56       * @return the originating checkable
57       */
58      public ICheckable getCheckable() {
59          return (ICheckable) source;
60      }
61  
62      /**
63       * Returns the checked state of the element.
64       *
65       * @return the checked state
66       */
67      public boolean getChecked() {
68          return state;
69      }
70  
71      /**
72       * Returns the element whose check state changed.
73       *
74       * @return the element
75       */
76      public Object   getElement() {
77          return element;
78      }
79  }
80
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