X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=tim%2Fprune%2Fundo%2FUndoAddTimeOffset.java;fp=tim%2Fprune%2Fundo%2FUndoAddTimeOffset.java;h=329d09a3a6b3f059eeea9f0ca6c17b1180370f81;hp=0000000000000000000000000000000000000000;hb=52bf9e8686c916be37a26a0b75340393d4478b05;hpb=ca9bdb3916f9c39adbbf95d06ac95c21dafbb4e6

diff --git a/tim/prune/undo/UndoAddTimeOffset.java b/tim/prune/undo/UndoAddTimeOffset.java
new file mode 100644
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--- /dev/null
+++ b/tim/prune/undo/UndoAddTimeOffset.java
@@ -0,0 +1,51 @@
+package tim.prune.undo;
+
+import tim.prune.I18nManager;
+import tim.prune.UpdateMessageBroker;
+import tim.prune.data.TrackInfo;
+
+/**
+ * Undo addition/subtraction of a time offset
+ */
+public class UndoAddTimeOffset implements UndoOperation
+{
+	/** Start and end indices of section */
+	private int _startIndex, _endIndex;
+	/** time offset */
+	private long _timeOffset;
+
+
+	/**
+	 * Constructor
+	 * @param inStart start index of section
+	 * @param inEnd end index of section
+	 * @param inOffset time offset
+	 */
+	public UndoAddTimeOffset(int inStart, int inEnd, long inOffset)
+	{
+		_startIndex = inStart;
+		_endIndex = inEnd;
+		_timeOffset = inOffset;
+	}
+
+
+	/**
+	 * @return description of operation including number of points adjusted
+	 */
+	public String getDescription()
+	{
+		return I18nManager.getText("undo.addtimeoffset") + " (" + (_endIndex - _startIndex + 1) + ")";
+	}
+
+
+	/**
+	 * 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
+	{
+		// Perform the inverse operation
+		inTrackInfo.getTrack().addTimeOffset(_startIndex, _endIndex, -_timeOffset);
+		UpdateMessageBroker.informSubscribers();
+	}
+}