tim/prune/function/CropToSelection.java

   1 package tim.prune.function;
   2
   3 import tim.prune.App;
   4 import tim.prune.data.Track;
   5
   6 /**
   7  * Class to provide the function to crop the track
   8  * to the current selection
   9  */
  10 public class CropToSelection extends DeleteBitOfTrackFunction
  11 {
  12         /**
  13          * Constructor
  14          * @param inApp application object for callback
  15          */
  16         public CropToSelection(App inApp)
  17         {
  18                 super(inApp);
  19         }
  20
  21         /** Get the name key */
  22         public String getNameKey() {
  23                 return "function.croptrack";
  24         }
  25
  26         /**
  27          * @return name key for undo operation
  28          */
  29         protected String getUndoNameKey() {
  30                 return "undo.croptrack";
  31         }
  32
  33         /**
  34          * Begin the function
  35          */
  36         public void begin()
  37         {
  38                 // check track
  39                 Track track = _app.getTrackInfo().getTrack();
  40                 if (track == null || track.getNumPoints() <= 0) return;
  41                 // check selection
  42                 final int selStart = _app.getTrackInfo().getSelection().getStart();
  43                 final int selEnd = _app.getTrackInfo().getSelection().getEnd();
  44                 if (selStart < 0 || selEnd < 0 || selEnd <= selStart) return;
  45                 // check for all selected
  46                 if (selStart == 0 && selEnd == (track.getNumPoints() - 1)) return;
  47
  48                 // Pass indexes to parent class
  49                 deleteTwoSections(0, selStart-1, selEnd+1, track.getNumPoints()-1);
  50         }
  51 }