Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / undo / UndoCutAndMove.java

diff --git a/src/tim/prune/undo/UndoCutAndMove.java b/src/tim/prune/undo/UndoCutAndMove.java
new file mode 100644 (file)
index 0000000..2a6f9ca
--- /dev/null
+++ b/src/tim/prune/undo/UndoCutAndMove.java
@@ -0,0 +1,95 @@
+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();
+       }
+}