X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fundo%2FUndoMergeTrackSegments.java;fp=src%2Ftim%2Fprune%2Fundo%2FUndoMergeTrackSegments.java;h=edd0aefa1be13a85521b76b02286278572f32eb4;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/undo/UndoMergeTrackSegments.java b/src/tim/prune/undo/UndoMergeTrackSegments.java
new file mode 100644
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+++ b/src/tim/prune/undo/UndoMergeTrackSegments.java
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+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();
+	}
+}