tim/prune/undo/UndoInsert.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.TrackInfo;\r
   6 \r
   7 /**\r
   8  * Operation to undo an insertion (eg average)\r
   9  */\r
  10 public class UndoInsert implements UndoOperation\r
  11 {\r
  12         private int _startPosition = 0;\r
  13         private int _numInserted = 0;\r
  14         private boolean _hasSegmentFlag = false;\r
  15         private boolean _segmentFlag = false;\r
  16 \r
  17 \r
  18         /**\r
  19          * Constructor without segment flag\r
  20          * @param inStart start of insert\r
  21          * @param inNumInserted number of points inserted\r
  22          */\r
  23         public UndoInsert(int inStart, int inNumInserted)\r
  24         {\r
  25                 this(inStart, inNumInserted, false, false);\r
  26         }\r
  27 \r
  28 \r
  29         /**\r
  30          * Constructor with segment flag\r
  31          * @param inStart start of insert\r
  32          * @param inNumInserted number of points inserted\r
  33          * @param inSegmentFlag segment flag of following point\r
  34          */\r
  35         public UndoInsert(int inStart, int inNumInserted, boolean inSegmentFlag)\r
  36         {\r
  37                 this(inStart, inNumInserted, true, inSegmentFlag);\r
  38         }\r
  39 \r
  40 \r
  41         /**\r
  42          * Constructor\r
  43          * @param inStart start of insert\r
  44          * @param inNumInserted number of points inserted\r
  45          * @param inHasFlag is there a segment flag present\r
  46          * @param inFlag segment flag, if any\r
  47          */\r
  48         public UndoInsert(int inStart, int inNumInserted, boolean inHasFlag, boolean inFlag)\r
  49         {\r
  50                 _startPosition = inStart;\r
  51                 _numInserted = inNumInserted;\r
  52                 _hasSegmentFlag = inHasFlag;\r
  53                 _segmentFlag = inFlag;\r
  54         }\r
  55 \r
  56 \r
  57         /**\r
  58          * @return description of operation including parameters\r
  59          */\r
  60         public String getDescription()\r
  61         {\r
  62                 return I18nManager.getText("undo.insert") + " (" + _numInserted + ")";\r
  63         }\r
  64 \r
  65 \r
  66         /**\r
  67          * Perform the undo operation on the given TrackInfo\r
  68          * @param inTrackInfo TrackInfo object on which to perform the operation\r
  69          */\r
  70         public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
  71         {\r
  72                 // restore track to previous values\r
  73                 inTrackInfo.getTrack().deleteRange(_startPosition, _startPosition + _numInserted - 1);\r
  74                 if (_hasSegmentFlag) {\r
  75                         DataPoint nextPoint = inTrackInfo.getTrack().getNextTrackPoint(_startPosition);\r
  76                         if (nextPoint != null) {nextPoint.setSegmentStart(_segmentFlag);}\r
  77                 }\r
  78                 // reset selection\r
  79                 inTrackInfo.getSelection().clearAll();\r
  80         }\r
  81 }