src/tim/prune/undo/UndoConvertNamesToTimes.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.DataPoint;\r
   6 import tim.prune.data.Field;\r
   7 import tim.prune.data.Track;\r
   8 import tim.prune.data.TrackInfo;\r
   9 \r
  10 /**\r
  11  * Operation to undo a conversion from names to times\r
  12  */\r
  13 public class UndoConvertNamesToTimes implements UndoOperation\r
  14 {\r
  15         /** Start and end indices of section */\r
  16         private int _startIndex, _endIndex;\r
  17         /** Waypoint names before operation */\r
  18         private String[] _waypointNames = null;\r
  19         /** Timestamp strings before operation */\r
  20         private String[] _timestamps = null;\r
  21 \r
  22         /**\r
  23          * Constructor\r
  24          * @param inTrackInfo track info object to copy values from\r
  25          */\r
  26         public UndoConvertNamesToTimes(TrackInfo inTrackInfo)\r
  27         {\r
  28                 _startIndex = inTrackInfo.getSelection().getStart();\r
  29                 _endIndex = inTrackInfo.getSelection().getEnd();\r
  30                 final int numPoints = _endIndex - _startIndex + 1;\r
  31                 _waypointNames = new String[numPoints];\r
  32                 _timestamps = new String[numPoints];\r
  33                 // Loop over points in selection, and copy names and timestamps\r
  34                 for (int i=_startIndex; i<=_endIndex; i++)\r
  35                 {\r
  36                         DataPoint point = inTrackInfo.getTrack().getPoint(i);\r
  37                         if (point.isWaypoint())\r
  38                         {\r
  39                                 _waypointNames[i-_startIndex] = point.getWaypointName();\r
  40                                 _timestamps[i-_startIndex] = point.getFieldValue(Field.TIMESTAMP);\r
  41                         }\r
  42                 }\r
  43         }\r
  44 \r
  45 \r
  46         /**\r
  47          * @return description of operation\r
  48          */\r
  49         public String getDescription()\r
  50         {\r
  51                 return I18nManager.getText("undo.convertnamestotimes");\r
  52         }\r
  53 \r
  54 \r
  55         /**\r
  56          * Perform the undo operation on the given Track\r
  57          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  58          */\r
  59         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  60         {\r
  61                 // Sanity check\r
  62                 Track track = inTrackInfo.getTrack();\r
  63                 if (track.getNumPoints() <= _endIndex || _endIndex <= _startIndex) {\r
  64                         throw new UndoException("Cannot undo conversion, track length doesn't match");\r
  65                 }\r
  66                 // Loop over points in selection and replace names and timestamps\r
  67                 for (int i=_startIndex; i<=_endIndex; i++)\r
  68                 {\r
  69                         String storedName = _waypointNames[i-_startIndex];\r
  70                         if (storedName != null)\r
  71                         {\r
  72                                 // point had a name before the operation, so might have been converted\r
  73                                 DataPoint point = track.getPoint(i);\r
  74                                 point.setFieldValue(Field.WAYPT_NAME, storedName, true);\r
  75                                 point.setFieldValue(Field.TIMESTAMP, _timestamps[i-_startIndex], true);\r
  76                         }\r
  77                 }\r
  78                 track.requestRescale();\r
  79                 UpdateMessageBroker.informSubscribers();\r
  80         }\r
  81 }\r