src/tim/prune/undo/UndoRemoveAltitudes.java

   1 package tim.prune.undo;
   2
   3 import tim.prune.I18nManager;
   4 import tim.prune.UpdateMessageBroker;
   5 import tim.prune.data.Altitude;
   6 import tim.prune.data.DataPoint;
   7 import tim.prune.data.TrackInfo;
   8
   9 /**
  10  * Undo removing (ie: restore the original) altitude from points
  11  */
  12 public class UndoRemoveAltitudes implements UndoOperation
  13 {
  14         /** Start index of section */
  15         private int _startIndex;
  16         /** altitude values before operation */
  17         private Altitude[] _altitudes;
  18
  19
  20         /**
  21          * Constructor
  22          * @param inTrackInfo track info object
  23          */
  24         public UndoRemoveAltitudes(TrackInfo inTrackInfo, int inStart, int inEnd)
  25         {
  26                 _startIndex = inStart;
  27                 final int numPoints = inEnd - inStart + 1;
  28                 // Make array of cloned altitude objects
  29                 _altitudes = new Altitude[numPoints];
  30                 for (int i=0; i<numPoints; i++) {
  31                         Altitude a = inTrackInfo.getTrack().getPoint(_startIndex+i).getAltitude();
  32                         if (a != null && a.isValid()) {
  33                                 _altitudes[i] = a.clone();
  34                         }
  35                 }
  36         }
  37
  38
  39         /**
  40          * @return description of operation including number of points adjusted
  41          */
  42         public String getDescription()
  43         {
  44                 return I18nManager.getText("undo.removealtitudes") + " (" + (_altitudes.length) + ")";
  45         }
  46
  47
  48         /**
  49          * Perform the undo operation on the given Track
  50          * @param inTrackInfo TrackInfo object on which to perform the operation
  51          */
  52         public void performUndo(TrackInfo inTrackInfo) throws UndoException
  53         {
  54                 // Perform the inverse operation
  55                 final int numPoints = _altitudes.length;
  56                 for (int i=0; i<numPoints; i++)
  57                 {
  58                         DataPoint point = inTrackInfo.getTrack().getPoint(i+_startIndex);
  59                         point.resetAltitude(_altitudes[i]);
  60                 }
  61                 _altitudes = null;
  62                 inTrackInfo.getSelection().markInvalid();
  63                 UpdateMessageBroker.informSubscribers();
  64         }
  65 }