tim/prune/undo/UndoInsert.java

   1 package tim.prune.undo;\r
   2 \r
   3 import tim.prune.I18nManager;\r
   4 import tim.prune.data.TrackInfo;\r
   5 \r
   6 /**\r
   7  * Operation to undo an insertion (eg interpolate)\r
   8  */\r
   9 public class UndoInsert implements UndoOperation\r
  10 {\r
  11         private int _startPosition = 0;\r
  12         private int _numInserted = 0;\r
  13 \r
  14 \r
  15         /**\r
  16          * Constructor\r
  17          * @param inStart start of insert\r
  18          * @param inNumInserted number of points inserted\r
  19          */\r
  20         public UndoInsert(int inStart, int inNumInserted)\r
  21         {\r
  22                 _startPosition = inStart;\r
  23                 _numInserted = inNumInserted;\r
  24         }\r
  25 \r
  26 \r
  27         /**\r
  28          * @return description of operation including parameters\r
  29          */\r
  30         public String getDescription()\r
  31         {\r
  32                 return I18nManager.getText("undo.insert") + " (" + _numInserted + ")";\r
  33         }\r
  34 \r
  35 \r
  36         /**\r
  37          * Perform the undo operation on the given TrackInfo\r
  38          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  39          */\r
  40         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  41         {\r
  42                 // restore track to previous values\r
  43                 inTrackInfo.getTrack().deleteRange(_startPosition, _startPosition + _numInserted - 1);\r
  44                 // reset selection\r
  45                 inTrackInfo.getSelection().select(_startPosition-1, _startPosition-1, _startPosition);\r
  46         }\r
  47 }