tim/prune/undo/UndoLoad.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.FileInfo;\r
   6 import tim.prune.data.PhotoList;\r
   7 import tim.prune.data.TrackInfo;\r
   8 \r
   9 /**\r
  10  * Operation to undo a load operation\r
  11  */\r
  12 public class UndoLoad implements UndoOperation\r
  13 {\r
  14         private int _cropIndex = -1;\r
  15         private int _numLoaded = -1;\r
  16         private DataPoint[] _contents = null;\r
  17         private PhotoList _photoList = null;\r
  18         private FileInfo _oldFileInfo = null;\r
  19 \r
  20 \r
  21         /**\r
  22          * Constructor for appending\r
  23          * @param inIndex index number of crop point\r
  24          * @param inNumLoaded number of points loaded\r
  25          */\r
  26         public UndoLoad(int inIndex, int inNumLoaded)\r
  27         {\r
  28                 _cropIndex = inIndex;\r
  29                 _numLoaded = inNumLoaded;\r
  30                 _contents = null;\r
  31         }\r
  32 \r
  33 \r
  34         /**\r
  35          * Constructor for replacing\r
  36          * @param inOldTrackInfo track info being replaced\r
  37          * @param inNumLoaded number of points loaded\r
  38          * @param inPhotoList photo list, if any\r
  39          */\r
  40         public UndoLoad(TrackInfo inOldTrackInfo, int inNumLoaded, PhotoList inPhotoList)\r
  41         {\r
  42                 _cropIndex = -1;\r
  43                 _numLoaded = inNumLoaded;\r
  44                 _contents = inOldTrackInfo.getTrack().cloneContents();\r
  45                 _oldFileInfo = inOldTrackInfo.getFileInfo().clone();\r
  46                 _photoList = inPhotoList;\r
  47         }\r
  48 \r
  49 \r
  50         /**\r
  51          * @return description of operation including number of points loaded\r
  52          */\r
  53         public String getDescription()\r
  54         {\r
  55                 String desc = I18nManager.getText("undo.load");\r
  56                 if (_numLoaded > 0)\r
  57                         desc = desc + " (" + _numLoaded + ")";\r
  58                 return desc;\r
  59         }\r
  60 \r
  61 \r
  62         /**\r
  63          * Perform the undo operation on the given Track\r
  64          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  65          */\r
  66         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  67         {\r
  68                 // remove source from fileinfo\r
  69                 if (_oldFileInfo == null) {\r
  70                         inTrackInfo.getFileInfo().removeSource();\r
  71                 }\r
  72                 else {\r
  73                         inTrackInfo.setFileInfo(_oldFileInfo);\r
  74                 }\r
  75                 // Crop / replace\r
  76                 if (_contents == null)\r
  77                 {\r
  78                         // crop track to previous size\r
  79                         inTrackInfo.getTrack().cropTo(_cropIndex);\r
  80                 }\r
  81                 else\r
  82                 {\r
  83                         // replace photos how they were\r
  84                         if (_photoList != null)\r
  85                         {\r
  86                                 inTrackInfo.getPhotoList().restore(_photoList);\r
  87                         }\r
  88                         // replace track contents with old\r
  89                         if (!inTrackInfo.getTrack().replaceContents(_contents))\r
  90                         {\r
  91                                 throw new UndoException(getDescription());\r
  92                         }\r
  93                 }\r
  94                 // clear selection\r
  95                 inTrackInfo.getSelection().clearAll();\r
  96         }\r
  97 }