tim/prune/undo/UndoAppendPoints.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 operation (such as create marker waypoints)\r
   8  * in which a number of points were appended to the track\r
   9  */\r
  10 public class UndoAppendPoints implements UndoOperation\r
  11 {\r
  12         private int _previousTrackLength = -1;\r
  13         private int _numAppended = 0;\r
  14 \r
  15 \r
  16         /**\r
  17          * Constructor\r
  18          */\r
  19         public UndoAppendPoints(int inTrackLength)\r
  20         {\r
  21                 _previousTrackLength = inTrackLength;\r
  22         }\r
  23 \r
  24         /**\r
  25          * @param inNumPoints number of points appended to track\r
  26          */\r
  27         public void setNumPointsAppended(int inNumPoints)\r
  28         {\r
  29                 _numAppended = inNumPoints;\r
  30         }\r
  31 \r
  32         /**\r
  33          * @return description of operation including number of points loaded\r
  34          */\r
  35         public String getDescription()\r
  36         {\r
  37                 return I18nManager.getText("undo.insert") + " (" + _numAppended + ")";\r
  38         }\r
  39 \r
  40         /**\r
  41          * Perform the undo operation on the given Track\r
  42          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  43          */\r
  44         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  45         {\r
  46                 // crop track to previous size\r
  47                 inTrackInfo.getTrack().cropTo(_previousTrackLength);\r
  48                 // clear selection\r
  49                 inTrackInfo.getSelection().clearAll();\r
  50         }\r
  51 }\r