X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fundo%2FUndoLookupSrtm.java;fp=src%2Ftim%2Fprune%2Fundo%2FUndoLookupSrtm.java;h=d028b82a568a98da8c7b46ea8d7539f767c891c1;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/undo/UndoLookupSrtm.java b/src/tim/prune/undo/UndoLookupSrtm.java
new file mode 100644
index 0000000..d028b82
--- /dev/null
+++ b/src/tim/prune/undo/UndoLookupSrtm.java
@@ -0,0 +1,77 @@
+package tim.prune.undo;
+
+import tim.prune.I18nManager;
+import tim.prune.UpdateMessageBroker;
+import tim.prune.data.DataPoint;
+import tim.prune.data.Field;
+import tim.prune.data.Track;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Undo lookup of altitudes from SRTM data
+ */
+public class UndoLookupSrtm implements UndoOperation
+{
+	/** DataPoint objects which didn't have altitudes before */
+	private DataPoint[] _points;
+	/** Altitude strings if present */
+	private String[] _altitudes;
+
+
+	/**
+	 * Constructor
+	 * @param inTrackInfo track info object
+	 */
+	public UndoLookupSrtm(TrackInfo inTrackInfo)
+	{
+		Track track = inTrackInfo.getTrack();
+		int numPoints = track.getNumPoints();
+		// Make arrays of points and altitudes
+		_points = new DataPoint[numPoints];
+		_altitudes = new String[numPoints];
+		for (int i=0; i<numPoints; i++)
+		{
+			DataPoint point = track.getPoint(i);
+			if (!point.hasAltitude() || point.getAltitude().getValue() == 0)
+			{
+				_points[i] = point;
+				if (point.hasAltitude()) {
+					_altitudes[i] = point.getFieldValue(Field.ALTITUDE);
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * @return description of operation
+	 */
+	public String getDescription()
+	{
+		return I18nManager.getText("undo.lookupsrtm");
+	}
+
+
+	/**
+	 * 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 again, and reset altitudes if they have one
+		final int numPoints = _points.length;
+		for (int i=0; i<numPoints; i++) {
+			DataPoint point = _points[i];
+			if (point != null && point.hasAltitude()) {
+				if (_altitudes[i] == null) {
+					point.setFieldValue(Field.ALTITUDE, null, true);
+				}
+				else {
+					point.setFieldValue(Field.ALTITUDE, _altitudes[i], true);
+				}
+			}
+		}
+		_points = null;
+		UpdateMessageBroker.informSubscribers();
+	}
+}