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         private DataPoint _nextTrackPoint = null;\r
  17         private boolean _segmentStart = false;\r
  18 \r
  19 \r
  20         /**\r
  21          * Constructor\r
  22          * @param inTrackInfo track info object\r
  23          */\r
  24         public UndoDeleteRange(TrackInfo inTrackInfo)\r
  25         {\r
  26                 _startIndex = inTrackInfo.getSelection().getStart();\r
  27                 _points = inTrackInfo.cloneSelectedRange();\r
  28                 _photoList = inTrackInfo.getPhotoList().cloneList();\r
  29                 // Save segment flag of following track point\r
  30                 _nextTrackPoint = inTrackInfo.getTrack().getNextTrackPoint(_startIndex + _points.length);\r
  31                 if (_nextTrackPoint != null) {\r
  32                         _segmentStart = _nextTrackPoint.getSegmentStart();\r
  33                 }\r
  34         }\r
  35 \r
  36 \r
  37         /**\r
  38          * @return description of operation including range length\r
  39          */\r
  40         public String getDescription()\r
  41         {\r
  42                 return I18nManager.getText("undo.deleterange")\r
  43                         + " (" + _points.length + ")";\r
  44         }\r
  45 \r
  46 \r
  47         /**\r
  48          * Perform the undo operation on the given Track\r
  49          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  50          */\r
  51         public void performUndo(TrackInfo inTrackInfo)\r
  52         {\r
  53                 // restore photos to how they were before\r
  54                 inTrackInfo.getPhotoList().restore(_photoList);\r
  55                 // reconnect photos to points\r
  56                 for (int i=0; i<_points.length; i++)\r
  57                 {\r
  58                         DataPoint point = _points[i];\r
  59                         if (point != null && point.getPhoto() != null)\r
  60                         {\r
  61                                 point.getPhoto().setDataPoint(point);\r
  62                         }\r
  63                 }\r
  64                 // restore point array into track\r
  65                 inTrackInfo.getTrack().insertRange(_points, _startIndex);\r
  66                 // Restore segment flag of following track point\r
  67                 if (_nextTrackPoint != null) {\r
  68                         _nextTrackPoint.setSegmentStart(_segmentStart);\r
  69                 }\r
  70         }\r
  71 }