tim/prune/undo/UndoReverseSection.java

   1 package tim.prune.undo;
   2
   3 import tim.prune.I18nManager;
   4 import tim.prune.data.TrackInfo;
   5
   6 /**
   7  * Undo reversal of track section
   8  */
   9 public class UndoReverseSection implements UndoOperation
  10 {
  11         private int _startIndex, _endIndex;
  12
  13
  14         /**
  15          * Constructor
  16          * @param inStart start index of section
  17          * @param inEnd end index of section
  18          */
  19         public UndoReverseSection(int inStart, int inEnd)
  20         {
  21                 _startIndex = inStart;
  22                 _endIndex = inEnd;
  23         }
  24
  25
  26         /**
  27          * @return description of operation
  28          */
  29         public String getDescription()
  30         {
  31                 return I18nManager.getText("undo.reverse");
  32         }
  33
  34
  35         /**
  36          * Perform the undo operation on the given Track
  37          * @param inTrackInfo TrackInfo object on which to perform the operation
  38          */
  39         public void performUndo(TrackInfo inTrackInfo) throws UndoException
  40         {
  41                 if (!inTrackInfo.getTrack().reverseRange(_startIndex, _endIndex))
  42                 {
  43                         throw new UndoException(getDescription());
  44                 }
  45         }
  46 }