tim/prune/undo/UndoDeletePoint.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.Field;\r
   6 import tim.prune.data.TrackInfo;\r
   7 \r
   8 /**\r
   9  * Operation to undo a delete of a single point\r
  10  */\r
  11 public class UndoDeletePoint implements UndoOperation\r
  12 {\r
  13         private int _pointIndex = -1;\r
  14         private DataPoint _point = null;\r
  15 \r
  16 \r
  17         /**\r
  18          * Constructor\r
  19          * @param inIndex index number of point within track\r
  20          * @param inPoint data point\r
  21          */\r
  22         public UndoDeletePoint(int inIndex, DataPoint inPoint)\r
  23         {\r
  24                 _pointIndex = inIndex;\r
  25                 _point = inPoint;\r
  26         }\r
  27 \r
  28 \r
  29         /**\r
  30          * @return description of operation including point name if any\r
  31          */\r
  32         public String getDescription()\r
  33         {\r
  34                 String desc = I18nManager.getText("undo.deletepoint");\r
  35                 String pointName = _point.getFieldValue(Field.WAYPT_NAME);\r
  36                 if (pointName != null && !pointName.equals(""))\r
  37                         desc = desc + " " + pointName;\r
  38                 return desc;\r
  39         }\r
  40 \r
  41 \r
  42         /**\r
  43          * Perform the undo operation on the given Track\r
  44          * @param inTrack Track object on which to perform the operation\r
  45          */\r
  46         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  47         {\r
  48                 // restore point into track\r
  49                 if (!inTrackInfo.getTrack().insertPoint(_point, _pointIndex))\r
  50                 {\r
  51                         throw new UndoException(getDescription());\r
  52                 }\r
  53         }\r
  54 }