tim/prune/undo/UndoConnectMedia.java

   1 package tim.prune.undo;\r
   2 \r
   3 import tim.prune.I18nManager;\r
   4 import tim.prune.UpdateMessageBroker;\r
   5 import tim.prune.data.AudioClip;\r
   6 import tim.prune.data.DataPoint;\r
   7 import tim.prune.data.Photo;\r
   8 import tim.prune.data.TrackInfo;\r
   9 \r
  10 /**\r
  11  * Operation to undo the connection of a photo and/or audio to a point\r
  12  */\r
  13 public class UndoConnectMedia implements UndoOperation\r
  14 {\r
  15         private DataPoint _point = null;\r
  16         private String _photoFilename = null;\r
  17         private String _audioFilename = null;\r
  18 \r
  19 \r
  20         /**\r
  21          * Constructor\r
  22          * @param inPoint data point\r
  23          * @param inPhotoFilename filename of photo, or null if photo not connected\r
  24          * @param inAudioFilename filename of audio, or null of audio not connected\r
  25          */\r
  26         public UndoConnectMedia(DataPoint inPoint, String inPhotoFilename, String inAudioFilename)\r
  27         {\r
  28                 _point = inPoint;\r
  29                 _photoFilename = inPhotoFilename;\r
  30                 _audioFilename = inAudioFilename;\r
  31         }\r
  32 \r
  33 \r
  34         /**\r
  35          * @return description of operation including photo and/or audio filename(s)\r
  36          */\r
  37         public String getDescription()\r
  38         {\r
  39                 String desc = I18nManager.getText("undo.connect") + " " + (_photoFilename==null?"":_photoFilename)\r
  40                  + (_photoFilename!=null && _audioFilename!=null?", ":"")\r
  41                  + (_audioFilename==null?"":_audioFilename);\r
  42                 return desc;\r
  43         }\r
  44 \r
  45 \r
  46         /**\r
  47          * Perform the undo operation on the given Track\r
  48          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  49          */\r
  50         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  51         {\r
  52                 if (_photoFilename != null)\r
  53                 {\r
  54                         // Disconnect photo\r
  55                         Photo photo = _point.getPhoto();\r
  56                         if (photo != null)\r
  57                         {\r
  58                                 _point.setPhoto(null);\r
  59                                 photo.setDataPoint(null);\r
  60                         }\r
  61                 }\r
  62                 if (_audioFilename != null)\r
  63                 {\r
  64                         // Disconnect audio\r
  65                         AudioClip audio = _point.getAudio();\r
  66                         if (audio != null)\r
  67                         {\r
  68                                 _point.setAudio(null);\r
  69                                 audio.setDataPoint(null);\r
  70                         }\r
  71                 }\r
  72                 // inform subscribers\r
  73                 UpdateMessageBroker.informSubscribers();\r
  74         }\r
  75 }