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.PhotoList;\r
   6 import tim.prune.data.TrackInfo;\r
   7 \r
   8 /**\r
   9  * Operation to undo a delete of a range of points\r
  10  */\r
  11 public class UndoDeleteRange implements UndoOperation\r
  12 {\r
  13         private int _startIndex = -1;\r
  14         private DataPoint[] _points = null;\r
  15         private PhotoList _photoList = null;\r
  16 \r
  17 \r
  18         /**\r
  19          * Constructor\r
  20          * @param inIndex index number of point within track\r
  21          * @param inPoint data point\r
  22          */\r
  23         public UndoDeleteRange(TrackInfo inTrackInfo)\r
  24         {\r
  25                 _startIndex = inTrackInfo.getSelection().getStart();\r
  26                 _points = inTrackInfo.cloneSelectedRange();\r
  27                 _photoList = inTrackInfo.getPhotoList().cloneList();\r
  28         }\r
  29 \r
  30 \r
  31         /**\r
  32          * @return description of operation including range length\r
  33          */\r
  34         public String getDescription()\r
  35         {\r
  36                 return I18nManager.getText("undo.deleterange")\r
  37                         + " (" + _points.length + ")";\r
  38         }\r
  39 \r
  40 \r
  41         /**\r
  42          * Perform the undo operation on the given Track\r
  43          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  44          */\r
  45         public void performUndo(TrackInfo inTrackInfo)\r
  46         {\r
  47                 // restore photos to how they were before\r
  48                 inTrackInfo.getPhotoList().restore(_photoList);\r
  49                 // reconnect photos to points\r
  50                 for (int i=0; i<_points.length; i++)\r
  51                 {\r
  52                         DataPoint point = _points[i];\r
  53                         if (point != null && point.getPhoto() != null)\r
  54                         {\r
  55                                 point.getPhoto().setDataPoint(point);\r
  56                         }\r
  57                 }\r
  58                 // restore point array into track\r
  59                 inTrackInfo.getTrack().insertRange(_points, _startIndex);\r
  60         }\r
  61 }