tim/prune/undo/UndoDeleteAudio.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.TrackInfo;\r
   8 \r
   9 /**\r
  10  * Operation to undo a delete of a single audio item, either with or without point\r
  11  */\r
  12 public class UndoDeleteAudio implements UndoOperation\r
  13 {\r
  14         private int _audioIndex = -1;\r
  15         private AudioClip _audio = null;\r
  16         private int _pointIndex = -1;\r
  17         private DataPoint _point = null;\r
  18 \r
  19 \r
  20         /**\r
  21          * Constructor\r
  22          * @param inAudio audio item\r
  23          * @param inAudioIndex index number of audio within list\r
  24          * @param inPoint data point\r
  25          * @param inPointIndex index number of point within track\r
  26          */\r
  27         public UndoDeleteAudio(AudioClip inAudio, int inAudioIndex, DataPoint inPoint, int inPointIndex)\r
  28         {\r
  29                 _audio = inAudio;\r
  30                 _audioIndex = inAudioIndex;\r
  31                 _point = inPoint;\r
  32                 _pointIndex = inPointIndex;\r
  33         }\r
  34 \r
  35 \r
  36         /**\r
  37          * @return description of operation including filename\r
  38          */\r
  39         public String getDescription() {\r
  40                 return I18nManager.getText("undo.removeaudio") + " " + _audio.getName();\r
  41         }\r
  42 \r
  43 \r
  44         /**\r
  45          * Perform the undo operation on the given Track\r
  46          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  47          */\r
  48         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  49         {\r
  50                 // restore audio\r
  51                 inTrackInfo.getAudioList().addAudio(_audio, _audioIndex);\r
  52                 // if there's a point to restore, restore it\r
  53                 if (_point != null)\r
  54                 {\r
  55                         if (!inTrackInfo.getTrack().insertPoint(_point, _pointIndex)) {\r
  56                                 throw new UndoException(getDescription());\r
  57                         }\r
  58                 }\r
  59                 else\r
  60                 {\r
  61                         // update needed if not already triggered by track update\r
  62                         UpdateMessageBroker.informSubscribers();\r
  63                 }\r
  64                 // Ensure that audio is associated with point and vice versa\r
  65                 _audio.setDataPoint(_point);\r
  66                 if (_point != null) {\r
  67                         _point.setAudio(_audio);\r
  68                 }\r
  69         }\r
  70 }\r