tim/prune/undo/UndoDeleteRange.java

   1 package tim.prune.undo;\r
   2 \r
   3 import tim.prune.I18nManager;\r
   4 import tim.prune.data.DataPoint;\r
   5 import tim.prune.data.TrackInfo;\r
   6 \r
   7 /**\r
   8  * Operation to undo a delete of a range of points\r
   9  */\r
  10 public class UndoDeleteRange implements UndoOperation\r
  11 {\r
  12         private int _startIndex = -1;\r
  13         private DataPoint[] _points = null;\r
  14 \r
  15 \r
  16         /**\r
  17          * Constructor\r
  18          * @param inIndex index number of point within track\r
  19          * @param inPoint data point\r
  20          */\r
  21         public UndoDeleteRange(TrackInfo inTrackInfo)\r
  22         {\r
  23                 _startIndex = inTrackInfo.getSelection().getStart();\r
  24                 _points = inTrackInfo.cloneSelectedRange();\r
  25         }\r
  26 \r
  27 \r
  28         /**\r
  29          * @return description of operation including range length\r
  30          */\r
  31         public String getDescription()\r
  32         {\r
  33                 return I18nManager.getText("undo.deleterange")\r
  34                         + " (" + _points.length + ")";\r
  35         }\r
  36 \r
  37 \r
  38         /**\r
  39          * Perform the undo operation on the given Track\r
  40          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  41          */\r
  42         public void performUndo(TrackInfo inTrackInfo)\r
  43         {\r
  44                 // restore point array into track\r
  45                 inTrackInfo.getTrack().insertRange(_points, _startIndex);\r
  46         }\r
  47 }