src/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         // Numbers of each media before operation\r
  20         private int _numPhotos = -1, _numAudios = -1;\r
  21 \r
  22 \r
  23         /**\r
  24          * Constructor for appending\r
  25          * @param inIndex index number of crop point\r
  26          * @param inNumLoaded number of points loaded\r
  27          */\r
  28         public UndoLoad(int inIndex, int inNumLoaded)\r
  29         {\r
  30                 _cropIndex = inIndex;\r
  31                 _numLoaded = inNumLoaded;\r
  32                 _contents = null;\r
  33         }\r
  34 \r
  35 \r
  36         /**\r
  37          * Constructor for replacing\r
  38          * @param inOldTrackInfo track info being replaced\r
  39          * @param inNumLoaded number of points loaded\r
  40          * @param inPhotoList photo list, if any\r
  41          */\r
  42         public UndoLoad(TrackInfo inOldTrackInfo, int inNumLoaded, PhotoList inPhotoList)\r
  43         {\r
  44                 _cropIndex = -1;\r
  45                 _numLoaded = inNumLoaded;\r
  46                 _contents = inOldTrackInfo.getTrack().cloneContents();\r
  47                 _oldFileInfo = inOldTrackInfo.getFileInfo().clone();\r
  48                 _photoList = inPhotoList;\r
  49         }\r
  50 \r
  51 \r
  52         /**\r
  53          * @return description of operation including number of points loaded\r
  54          */\r
  55         public String getDescription()\r
  56         {\r
  57                 String desc = I18nManager.getText("undo.load");\r
  58                 if (_numLoaded > 0)\r
  59                         desc = desc + " (" + _numLoaded + ")";\r
  60                 return desc;\r
  61         }\r
  62 \r
  63         /**\r
  64          * Set the number of photos and audios before the load operation\r
  65          * @param inNumPhotos number of photos\r
  66          * @param inNumAudios number of audios\r
  67          */\r
  68         public void setNumPhotosAudios(int inNumPhotos, int inNumAudios)\r
  69         {\r
  70                 _numPhotos = inNumPhotos;\r
  71                 _numAudios = inNumAudios;\r
  72         }\r
  73 \r
  74         /**\r
  75          * Perform the undo operation on the given Track\r
  76          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  77          */\r
  78         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  79         {\r
  80                 // remove source from fileinfo\r
  81                 if (_oldFileInfo == null) {\r
  82                         inTrackInfo.getFileInfo().removeSource();\r
  83                 }\r
  84                 else {\r
  85                         inTrackInfo.setFileInfo(_oldFileInfo);\r
  86                 }\r
  87                 // Crop / replace\r
  88                 if (_contents == null)\r
  89                 {\r
  90                         // crop track to previous size\r
  91                         inTrackInfo.getTrack().cropTo(_cropIndex);\r
  92                 }\r
  93                 else\r
  94                 {\r
  95                         // replace photos how they were\r
  96                         if (_photoList != null) {\r
  97                                 inTrackInfo.getPhotoList().restore(_photoList);\r
  98                         }\r
  99                         // Crop media lists to previous size (if specified)\r
 100                         if (_numPhotos > -1) {inTrackInfo.getPhotoList().cropTo(_numPhotos);}\r
 101                         if (_numAudios > -1) {inTrackInfo.getAudioList().cropTo(_numAudios);}\r
 102                         // replace track contents with old\r
 103                         if (!inTrackInfo.getTrack().replaceContents(_contents))\r
 104                         {\r
 105                                 throw new UndoException(getDescription());\r
 106                         }\r
 107                 }\r
 108                 // clear selection\r
 109                 inTrackInfo.getSelection().clearAll();\r
 110         }\r
 111 }\r