Moved source into separate src directory due to popular request

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

diff --git a/src/tim/prune/undo/UndoMergeTrackSegments.java b/src/tim/prune/undo/UndoMergeTrackSegments.java
new file mode 100644 (file)
index 0000000..edd0aef
--- /dev/null
+++ b/src/tim/prune/undo/UndoMergeTrackSegments.java
@@ -0,0 +1,75 @@
+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 merging of track segments
+ */
+public class UndoMergeTrackSegments implements UndoOperation
+{
+       /** Start index */
+       private int _startIndex;
+       /** array of segment flags */
+       private boolean[] _segmentFlags = null;
+       /** Following point, if any */
+       private DataPoint _nextTrackPoint = null;
+       /** Segment flag of next point */
+       private boolean _nextSegmentFlag = false;
+
+
+       /**
+        * Constructor
+        * @param inTrack track object for copying segment flags
+        * @param inStart start index of section
+        * @param inEnd end index of section
+        */
+       public UndoMergeTrackSegments(Track inTrack, int inStart, int inEnd)
+       {
+               _startIndex = inStart;
+               // Store booleans for all points within selection
+               int numPoints = inEnd - inStart + 1;
+               _segmentFlags = new boolean[numPoints];
+               for (int i=inStart; i<=inEnd; i++) {
+                       _segmentFlags[i-inStart] = inTrack.getPoint(i).getSegmentStart();
+               }
+               // Look for following track point, store flag
+               _nextTrackPoint = inTrack.getNextTrackPoint(inEnd + 1);
+               if (_nextTrackPoint != null) {
+                       _nextSegmentFlag = _nextTrackPoint.getSegmentStart();
+               }
+       }
+
+
+       /**
+        * @return description of operation
+        */
+       public String getDescription()
+       {
+               return I18nManager.getText("undo.mergetracksegments");
+       }
+
+
+       /**
+        * 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
+       {
+               // Loop through points replacing segment start flags
+               for (int i=0; i<_segmentFlags.length; i++) {
+                       DataPoint point = inTrackInfo.getTrack().getPoint(_startIndex + i);
+                       if (!point.isWaypoint()) {
+                               point.setSegmentStart(_segmentFlags[i]);
+                       }
+               }
+               // Restore segment start flag for following point
+               if (_nextTrackPoint != null) {
+                       _nextTrackPoint.setSegmentStart(_nextSegmentFlag);
+               }
+               UpdateMessageBroker.informSubscribers();
+       }
+}