tim/prune/undo/UndoSewSegments.java

   1 package tim.prune.undo;\r
   2 \r
   3 import tim.prune.data.DataPoint;\r
   4 import tim.prune.data.Track;\r
   5 import tim.prune.data.TrackInfo;\r
   6 \r
   7 /**\r
   8  * Operation to undo the sewing together of track segments\r
   9  */\r
  10 public class UndoSewSegments extends UndoReorder\r
  11 {\r
  12         /** All segment start flags need to be remembered as well */\r
  13         private boolean[] _segmentStartFlags = null;\r
  14 \r
  15         /**\r
  16          * Constructor\r
  17          * @param inTrack track contents to copy\r
  18          */\r
  19         public UndoSewSegments(Track inTrack)\r
  20         {\r
  21                 super(inTrack, "undo.sewsegments");\r
  22                 // Also remember segment start flags, as they may have been changed by reversals\r
  23                 final int numPoints = inTrack.getNumPoints();\r
  24                 _segmentStartFlags = new boolean[numPoints];\r
  25                 for (int i=0; i<numPoints; i++) {\r
  26                         _segmentStartFlags[i] = inTrack.getPoint(i).getSegmentStart();\r
  27                 }\r
  28         }\r
  29 \r
  30         /** Perform the undo */\r
  31         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  32         {\r
  33                 // Put all the points back in the right order\r
  34                 super.performUndo(inTrackInfo);\r
  35                 // And then restore the segment flags\r
  36                 for (int i=0; i<_segmentStartFlags.length; i++)\r
  37                 {\r
  38                         DataPoint point = inTrackInfo.getTrack().getPoint(i);\r
  39                         if (point != null && !point.isWaypoint()) {\r
  40                                 point.setSegmentStart(_segmentStartFlags[i]);\r
  41                         }\r
  42                 }\r
  43         }\r
  44 }\r