X-Git-Url: http://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fundo%2FUndoSewSegments.java;fp=tim%2Fprune%2Fundo%2FUndoSewSegments.java;h=fbcf8530bbea31c6b492d4260daf692e35d85953;hb=326f489e36aa7f235bc19409a57bf4955cd50f24;hp=0000000000000000000000000000000000000000;hpb=8c8868ae29b3252f02e094c02307384cf61ba667;p=GpsPrune.git

diff --git a/tim/prune/undo/UndoSewSegments.java b/tim/prune/undo/UndoSewSegments.java
new file mode 100644
index 0000000..fbcf853
--- /dev/null
+++ b/tim/prune/undo/UndoSewSegments.java
@@ -0,0 +1,44 @@
+package tim.prune.undo;
+
+import tim.prune.data.DataPoint;
+import tim.prune.data.Track;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Operation to undo the sewing together of track segments
+ */
+public class UndoSewSegments extends UndoReorder
+{
+	/** All segment start flags need to be remembered as well */
+	private boolean[] _segmentStartFlags = null;
+
+	/**
+	 * Constructor
+	 * @param inTrack track contents to copy
+	 */
+	public UndoSewSegments(Track inTrack)
+	{
+		super(inTrack, "undo.sewsegments");
+		// Also remember segment start flags, as they may have been changed by reversals
+		final int numPoints = inTrack.getNumPoints();
+		_segmentStartFlags = new boolean[numPoints];
+		for (int i=0; i<numPoints; i++) {
+			_segmentStartFlags[i] = inTrack.getPoint(i).getSegmentStart();
+		}
+	}
+
+	/** Perform the undo */
+	public void performUndo(TrackInfo inTrackInfo) throws UndoException
+	{
+		// Put all the points back in the right order
+		super.performUndo(inTrackInfo);
+		// And then restore the segment flags
+		for (int i=0; i<_segmentStartFlags.length; i++)
+		{
+			DataPoint point = inTrackInfo.getTrack().getPoint(i);
+			if (point != null && !point.isWaypoint()) {
+				point.setSegmentStart(_segmentStartFlags[i]);
+			}
+		}
+	}
+}