tim/prune/undo/UndoReorder.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.Track;\r
   6 import tim.prune.data.TrackInfo;\r
   7 \r
   8 /**\r
   9  * Abstract operation to undo a reordering by replacing track contents with a shallow copy\r
  10  */\r
  11 public abstract class UndoReorder implements UndoOperation\r
  12 {\r
  13         /** Shallow copy of whole track contents */\r
  14         private DataPoint[] _contents = null;\r
  15         /** Description */\r
  16         private String _description = null;\r
  17 \r
  18         /**\r
  19          * Constructor\r
  20          * @param inTrack track contents to copy\r
  21          * @param inDescKey description key\r
  22          */\r
  23         public UndoReorder(Track inTrack, String inDescKey)\r
  24         {\r
  25                 _contents = inTrack.cloneContents();\r
  26                 _description = I18nManager.getText(inDescKey);\r
  27         }\r
  28 \r
  29         /**\r
  30          * @return description\r
  31          */\r
  32         public String getDescription() {\r
  33                 return _description;\r
  34         }\r
  35 \r
  36 \r
  37         /**\r
  38          * Perform the undo operation on the given Track\r
  39          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  40          */\r
  41         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  42         {\r
  43                 // restore track to previous values\r
  44                 inTrackInfo.getTrack().replaceContents(_contents);\r
  45                 inTrackInfo.getSelection().clearAll();\r
  46         }\r
  47 }\r