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.TrackInfo;\r
   6 \r
   7 /**\r
   8  * Operation to undo a delete of a single point\r
   9  */\r
  10 public class UndoDeletePoint implements UndoOperation\r
  11 {\r
  12         private int _pointIndex = -1;\r
  13         private DataPoint _point = null;\r
  14         private int _photoIndex = -1;\r
  15 \r
  16 \r
  17         /**\r
  18          * Constructor\r
  19          * @param inPointIndex index number of point within track\r
  20          * @param inPoint data point\r
  21          * @param inPhotoIndex index number of photo within photo list\r
  22          */\r
  23         public UndoDeletePoint(int inPointIndex, DataPoint inPoint, int inPhotoIndex)\r
  24         {\r
  25                 _pointIndex = inPointIndex;\r
  26                 _point = inPoint;\r
  27                 _photoIndex = inPhotoIndex;\r
  28         }\r
  29 \r
  30 \r
  31         /**\r
  32          * @return description of operation including point name if any\r
  33          */\r
  34         public String getDescription()\r
  35         {\r
  36                 String desc = I18nManager.getText("undo.deletepoint");\r
  37                 String pointName = _point.getWaypointName();\r
  38                 if (pointName != null && !pointName.equals(""))\r
  39                         desc = desc + " " + pointName;\r
  40                 return desc;\r
  41         }\r
  42 \r
  43 \r
  44         /**\r
  45          * Perform the undo operation on the given Track\r
  46          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  47          */\r
  48         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  49         {\r
  50                 // restore point into track\r
  51                 if (!inTrackInfo.getTrack().insertPoint(_point, _pointIndex))\r
  52                 {\r
  53                         throw new UndoException(getDescription());\r
  54                 }\r
  55                 // Re-attach / Re-insert photo into list if necessary\r
  56                 if (_point.getPhoto() != null && _photoIndex > -1)\r
  57                 {\r
  58                         // Check if photo is still in list\r
  59                         if (!inTrackInfo.getPhotoList().contains(_point.getPhoto()))\r
  60                         {\r
  61                                 // photo has been removed - need to reinsert\r
  62                                 inTrackInfo.getPhotoList().addPhoto(_point.getPhoto(), _photoIndex);\r
  63                         }\r
  64                         // Ensure that photo is associated with point\r
  65                         _point.getPhoto().setDataPoint(_point);\r
  66                 }\r
  67         }\r
  68 }\r