X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fundo%2FUndoInterpolate.java;fp=src%2Ftim%2Fprune%2Fundo%2FUndoInterpolate.java;h=975a7314394d6800fa8cd0b1d8cb7631ef0b6c6b;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/undo/UndoInterpolate.java b/src/tim/prune/undo/UndoInterpolate.java
new file mode 100644
index 0000000..975a731
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+++ b/src/tim/prune/undo/UndoInterpolate.java
@@ -0,0 +1,60 @@
+package tim.prune.undo;
+
+import tim.prune.I18nManager;
+import tim.prune.data.DataPoint;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Operation to undo an interpolation
+ */
+public class UndoInterpolate implements UndoOperation
+{
+	private int _startIndex = 0;
+	private int _totalInserted = 0;
+	private DataPoint[] _points = null;
+
+
+	/**
+	 * Constructor
+	 * @param inTrackInfo track info object
+	 * @param inTotalInserted total number of points inserted
+	 */
+	public UndoInterpolate(TrackInfo inTrackInfo, int inTotalInserted)
+	{
+		_startIndex = inTrackInfo.getSelection().getStart();
+		_points = inTrackInfo.cloneSelectedRange();
+		_totalInserted = inTotalInserted;
+	}
+
+
+	/**
+	 * @return description of operation including parameters
+	 */
+	public String getDescription()
+	{
+		return I18nManager.getText("undo.insert") + " (" + _totalInserted + ")";
+	}
+
+
+	/**
+	 * Perform the undo operation on the given TrackInfo
+	 * @param inTrackInfo TrackInfo object on which to perform the operation
+	 */
+	public void performUndo(TrackInfo inTrackInfo) throws UndoException
+	{
+		// Work out how many points were in the track before the interpolation
+		final int newSize = inTrackInfo.getTrack().getNumPoints() - _totalInserted;
+		DataPoint[] oldPoints = inTrackInfo.getTrack().cloneContents();
+		DataPoint[] newPoints = new DataPoint[newSize];
+
+		// Restore track to previous values
+		System.arraycopy(oldPoints, 0, newPoints, 0, _startIndex);
+		System.arraycopy(_points, 0, newPoints, _startIndex, _points.length);
+		int endIndex = _startIndex + _points.length;
+		System.arraycopy(oldPoints, endIndex + _totalInserted, newPoints, endIndex, newSize - endIndex);
+
+		inTrackInfo.getTrack().replaceContents(newPoints);
+		// reset selection
+		inTrackInfo.getSelection().clearAll();
+	}
+}