X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fundo%2FUndoDeleteMarked.java;fp=src%2Ftim%2Fprune%2Fundo%2FUndoDeleteMarked.java;h=63ef7493b6836e99042b8cc0fb28f65662ef905e;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/undo/UndoDeleteMarked.java b/src/tim/prune/undo/UndoDeleteMarked.java
new file mode 100644
index 0000000..63ef749
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+++ b/src/tim/prune/undo/UndoDeleteMarked.java
@@ -0,0 +1,74 @@
+package tim.prune.undo;
+
+import tim.prune.I18nManager;
+import tim.prune.data.DataPoint;
+import tim.prune.data.Track;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Operation to undo the deletion of marked points
+ */
+public class UndoDeleteMarked implements UndoOperation
+{
+	private DataPoint[] _contents = null;
+	protected int _numPointsDeleted = -1;
+	private boolean[] _segmentStarts = null;
+
+
+	/**
+	 * Constructor
+	 * @param inTrack track contents to copy
+	 */
+	public UndoDeleteMarked(Track inTrack)
+	{
+		_contents = inTrack.cloneContents();
+		// Copy boolean segment start flags
+		_segmentStarts = new boolean[inTrack.getNumPoints()];
+		for (int i=0; i<inTrack.getNumPoints(); i++) {
+			_segmentStarts[i] = inTrack.getPoint(i).getSegmentStart();
+		}
+	}
+
+
+	/**
+	 * Set the number of points deleted
+	 * (only known after attempted compression)
+	 * @param inNum number of points deleted
+	 */
+	public void setNumPointsDeleted(int inNum)
+	{
+		_numPointsDeleted = inNum;
+	}
+
+
+	/**
+	 * @return description of operation including parameters
+	 */
+	public String getDescription()
+	{
+		String desc = I18nManager.getText("undo.deletemarked");
+		if (_numPointsDeleted > 0)
+			desc = desc + " (" + _numPointsDeleted + ")";
+		return desc;
+	}
+
+
+	/**
+	 * 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
+	{
+		// restore track to previous values
+		inTrackInfo.getTrack().replaceContents(_contents);
+		// Copy boolean segment start flags
+		Track track = inTrackInfo.getTrack();
+		if (_segmentStarts.length != track.getNumPoints())
+			throw new UndoException("Cannot undo delete - track length no longer matches");
+		for (int i=0; i<_segmentStarts.length; i++) {
+			track.getPoint(i).setSegmentStart(_segmentStarts[i]);
+		}
+		// clear selection
+		inTrackInfo.getSelection().clearAll();
+	}
+}
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