tim/prune/undo/UndoLoadPhotos.java

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