+++ /dev/null
-package tim.prune.undo;
-
-import tim.prune.I18nManager;
-import tim.prune.UpdateMessageBroker;
-import tim.prune.data.DataPoint;
-import tim.prune.data.Track;
-import tim.prune.data.TrackInfo;
-
-/**
- * Undo cut and move of a track section
- */
-public class UndoCutAndMove implements UndoOperation
-{
- /** Start and end indices of section */
- private int _startIndex, _endIndex;
- /** Index of move to point */
- private int _moveToIndex;
- /** First track point in section, next track point after where it was */
- private DataPoint _firstTrackPoint = null, _followingTrackPoint = null;
- /** Next track point after where it's being moved to */
- private DataPoint _moveTrackPoint = null;
- /** Segment flags for these points */
- private boolean _firstSegmentFlag, _followingSegmentFlag, _moveToSegmentFlag;
-
-
- /**
- * Constructor
- * @param inTrack track object for copying segment flags
- * @param inStart start index of section
- * @param inEnd end index of section
- * @param inMoveTo index of moveTo point
- */
- public UndoCutAndMove(Track inTrack, int inStart, int inEnd, int inMoveTo)
- {
- _startIndex = inStart;
- _endIndex = inEnd;
- _moveToIndex = inMoveTo;
- // Look for first track point in section to be moved, store flag
- _firstTrackPoint = inTrack.getNextTrackPoint(inStart);
- if (_firstTrackPoint != null) {
- _firstSegmentFlag = _firstTrackPoint.getSegmentStart();
- }
- // Look for following track point, store flag
- _followingTrackPoint = inTrack.getNextTrackPoint(inEnd + 1);
- if (_followingTrackPoint != null) {
- _followingSegmentFlag = _followingTrackPoint.getSegmentStart();
- }
- // Look for next track point after move point, store flag
- _moveTrackPoint = inTrack.getNextTrackPoint(inMoveTo);
- if (_moveTrackPoint != null) {
- _moveToSegmentFlag = _moveTrackPoint.getSegmentStart();
- }
- }
-
-
- /**
- * @return description of operation including number of points moved
- */
- public String getDescription()
- {
- return I18nManager.getText("undo.cutandmove") + " (" + (_endIndex - _startIndex + 1) + ")";
- }
-
-
- /**
- * Perform the undo operation on the given Track
- * @param inTrackInfo TrackInfo object on which to perform the operation
- */
- public void performUndo(TrackInfo inTrackInfo) throws UndoException
- {
- // Cut and move the section back to where it was before
- int numMoved = _endIndex - _startIndex + 1;
- // Calculate new positions depending on whether section was moved forward or backward
- if (_startIndex > _moveToIndex)
- {
- inTrackInfo.getTrack().cutAndMoveSection(_moveToIndex, _moveToIndex + numMoved - 1, _startIndex + numMoved);
- }
- else
- {
- inTrackInfo.getTrack().cutAndMoveSection(_moveToIndex - numMoved, _moveToIndex - 1, _startIndex);
- }
- // Restore segment start flags
- if (_firstTrackPoint != null) {
- _firstTrackPoint.setSegmentStart(_firstSegmentFlag);
- }
- if (_followingTrackPoint != null) {
- _followingTrackPoint.setSegmentStart(_followingSegmentFlag);
- }
- if (_moveTrackPoint != null) {
- _moveTrackPoint.setSegmentStart(_moveToSegmentFlag);
- }
- inTrackInfo.getSelection().clearAll();
- UpdateMessageBroker.informSubscribers();
- }
-}