tim/prune/undo/UndoDisconnectPhoto.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 the disconnection of a photo from a point\r
  10  */\r
  11 public class UndoDisconnectPhoto implements UndoOperation\r
  12 {\r
  13         private DataPoint _point = null;\r
  14         private Photo _photo = null;\r
  15         private String _filename = null;\r
  16 \r
  17 \r
  18         /**\r
  19          * Constructor\r
  20          * @param inPoint data point\r
  21          * @param inFilename filename of photo\r
  22          */\r
  23         public UndoDisconnectPhoto(DataPoint inPoint, String inFilename)\r
  24         {\r
  25                 _point = inPoint;\r
  26                 _photo = inPoint.getPhoto();\r
  27                 _filename = inFilename;\r
  28         }\r
  29 \r
  30 \r
  31         /**\r
  32          * @return description of operation including photo filename\r
  33          */\r
  34         public String getDescription()\r
  35         {\r
  36                 String desc = I18nManager.getText("undo.disconnectphoto") + " " + _filename;\r
  37                 return desc;\r
  38         }\r
  39 \r
  40 \r
  41         /**\r
  42          * Perform the undo operation on the given Track\r
  43          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  44          */\r
  45         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  46         {\r
  47                 // Connect again\r
  48                 if (_point != null && _photo != null)\r
  49                 {\r
  50                         _point.setPhoto(_photo);\r
  51                         _photo.setDataPoint(_point);\r
  52                         // inform subscribers\r
  53                         inTrackInfo.triggerUpdate();\r
  54                 }\r
  55                 else\r
  56                 {\r
  57                         // throw exception if failed\r
  58                         throw new UndoException(getDescription());\r
  59                 }\r
  60         }\r
  61 }