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 inTrackInfo track info object\r
  21          */\r
  22         public UndoDeleteRange(TrackInfo inTrackInfo)\r
  23         {\r
  24                 _startIndex = inTrackInfo.getSelection().getStart();\r
  25                 _points = inTrackInfo.cloneSelectedRange();\r
  26                 _photoList = inTrackInfo.getPhotoList().cloneList();\r
  27         }\r
  28 \r
  29 \r
  30         /**\r
  31          * @return description of operation including range length\r
  32          */\r
  33         public String getDescription()\r
  34         {\r
  35                 return I18nManager.getText("undo.deleterange")\r
  36                         + " (" + _points.length + ")";\r
  37         }\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)\r
  45         {\r
  46                 // restore photos to how they were before\r
  47                 inTrackInfo.getPhotoList().restore(_photoList);\r
  48                 // reconnect photos to points\r
  49                 for (int i=0; i<_points.length; i++)\r
  50                 {\r
  51                         DataPoint point = _points[i];\r
  52                         if (point != null && point.getPhoto() != null)\r
  53                         {\r
  54                                 point.getPhoto().setDataPoint(point);\r
  55                         }\r
  56                 }\r
  57                 // restore point array into track\r
  58                 inTrackInfo.getTrack().insertRange(_points, _startIndex);\r
  59         }\r
  60 }