54         /**
  55          * Indicates the sort order has changed.
  56          */
  57         SORT_ORDER_CHANGED,
  58 
  59         /**
  60          * Indicates the contents have been newly sorted or
  61          * transformed in some way.
  62          */
  63         SORTED
  64     }
  65 
  66     /**
  67      * Creates a <code>RowSorterEvent</code> of type
  68      * <code>SORT_ORDER_CHANGED</code>.
  69      *
  70      * @param source the source of the change
  71      * @throws IllegalArgumentException if <code>source</code> is
  72      *         <code>null</code>
  73      */
  74     public RowSorterEvent(RowSorter source) {
  75         this(source, Type.SORT_ORDER_CHANGED, null);
  76     }
  77 
  78     /**
  79      * Creates a <code>RowSorterEvent</code>.
  80      *
  81      * @param source the source of the change
  82      * @param type the type of event
  83      * @param previousRowIndexToModel the mapping from model indices to
  84      *        view indices prior to the sort, may be <code>null</code>
  85      * @throws IllegalArgumentException if source or <code>type</code> is
  86      *         <code>null</code>
  87      */
  88     public RowSorterEvent(RowSorter source, Type type,
  89                           int[] previousRowIndexToModel) {
  90         super(source);
  91         if (type == null) {
  92             throw new IllegalArgumentException("type must be non-null");
  93         }
  94         this.type = type;
  95         this.oldViewToModel = previousRowIndexToModel;
  96     }
  97 
  98     /**
  99      * Returns the source of the event as a <code>RowSorter</code>.
 100      *
 101      * @return the source of the event as a <code>RowSorter</code>
 102      */
 103     public RowSorter getSource() {

 104         return (RowSorter)super.getSource();
 105     }
 106 
 107     /**
 108      * Returns the type of event.
 109      *
 110      * @return the type of event
 111      */
 112     public Type getType() {
 113         return type;
 114     }
 115 
 116     /**
 117      * Returns the location of <code>index</code> in terms of the
 118      * model prior to the sort.  This method is only useful for events
 119      * of type <code>SORTED</code>.  This method will return -1 if the
 120      * index is not valid, or the locations prior to the sort have not
 121      * been provided.
 122      *
 123      * @param index the index in terms of the view

  54         /**
  55          * Indicates the sort order has changed.
  56          */
  57         SORT_ORDER_CHANGED,
  58 
  59         /**
  60          * Indicates the contents have been newly sorted or
  61          * transformed in some way.
  62          */
  63         SORTED
  64     }
  65 
  66     /**
  67      * Creates a <code>RowSorterEvent</code> of type
  68      * <code>SORT_ORDER_CHANGED</code>.
  69      *
  70      * @param source the source of the change
  71      * @throws IllegalArgumentException if <code>source</code> is
  72      *         <code>null</code>
  73      */
  74     public RowSorterEvent(RowSorter<?> source) {
  75         this(source, Type.SORT_ORDER_CHANGED, null);
  76     }
  77 
  78     /**
  79      * Creates a <code>RowSorterEvent</code>.
  80      *
  81      * @param source the source of the change
  82      * @param type the type of event
  83      * @param previousRowIndexToModel the mapping from model indices to
  84      *        view indices prior to the sort, may be <code>null</code>
  85      * @throws IllegalArgumentException if source or <code>type</code> is
  86      *         <code>null</code>
  87      */
  88     public RowSorterEvent(RowSorter<?> source, Type type,
  89                           int[] previousRowIndexToModel) {
  90         super(source);
  91         if (type == null) {
  92             throw new IllegalArgumentException("type must be non-null");
  93         }
  94         this.type = type;
  95         this.oldViewToModel = previousRowIndexToModel;
  96     }
  97 
  98     /**
  99      * Returns the source of the event as a <code>RowSorter</code>.
 100      *
 101      * @return the source of the event as a <code>RowSorter</code>
 102      */
 103     @Override
 104     public RowSorter<?> getSource() {
 105         return (RowSorter)super.getSource();
 106     }
 107 
 108     /**
 109      * Returns the type of event.
 110      *
 111      * @return the type of event
 112      */
 113     public Type getType() {
 114         return type;
 115     }
 116 
 117     /**
 118      * Returns the location of <code>index</code> in terms of the
 119      * model prior to the sort.  This method is only useful for events
 120      * of type <code>SORTED</code>.  This method will return -1 if the
 121      * index is not valid, or the locations prior to the sort have not
 122      * been provided.
 123      *
 124      * @param index the index in terms of the view