tim/prune/undo/UndoLoadPhotos.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.Photo;\r
   6 import tim.prune.data.TrackInfo;\r
   7 \r
   8 /**\r
   9  * Operation to undo a load photos operation\r
  10  */\r
  11 public class UndoLoadPhotos implements UndoOperation\r
  12 {\r
  13         private int _numPhotos = -1;\r
  14         private int _numPoints = -1;\r
  15 \r
  16 \r
  17         /**\r
  18          * Constructor\r
  19          * @param inNumPhotos number of photos loaded\r
  20          * @param inNumPoints number of points loaded\r
  21          */\r
  22         public UndoLoadPhotos(int inNumPhotos, int inNumPoints)\r
  23         {\r
  24                 _numPhotos = inNumPhotos;\r
  25                 _numPoints = inNumPoints;\r
  26         }\r
  27 \r
  28 \r
  29         /**\r
  30          * @return description of operation including number of photos loaded\r
  31          */\r
  32         public String getDescription()\r
  33         {\r
  34                 String desc = I18nManager.getText("undo.loadphotos");\r
  35                 if (_numPhotos > 0)\r
  36                         desc = desc + " (" + _numPhotos + ")";\r
  37                 return desc;\r
  38         }\r
  39 \r
  40 \r
  41         /**\r
  42          * Perform the undo operation on the given Track\r
  43          * Delete both track points and Photo objects\r
  44          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  45          */\r
  46         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  47         {\r
  48                 int cropIndex;\r
  49                 // crop track to previous size\r
  50                 if (_numPoints > 0)\r
  51                 {\r
  52                         cropIndex = inTrackInfo.getTrack().getNumPoints() - _numPoints;\r
  53                         inTrackInfo.getTrack().cropTo(cropIndex);\r
  54                 }\r
  55                 else\r
  56                 {\r
  57                         // Loop through the points (if any) and detach them\r
  58                         for (int i=0; i<_numPhotos; i++)\r
  59                         {\r
  60                                 Photo photo = inTrackInfo.getPhotoList().getPhoto(inTrackInfo.getPhotoList().getNumPhotos() - 1 - i);\r
  61                                 if (photo.isConnected()) {\r
  62                                         DataPoint point = photo.getDataPoint();\r
  63                                         if (point != null) {point.setPhoto(null);}\r
  64                                 }\r
  65                         }\r
  66                 }\r
  67                 // crop photo list to previous size\r
  68                 cropIndex = inTrackInfo.getPhotoList().getNumPhotos() - _numPhotos;\r
  69                 inTrackInfo.getPhotoList().cropTo(cropIndex);\r
  70                 // clear selection\r
  71                 inTrackInfo.getSelection().clearAll();\r
  72         }\r
  73 }