Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / undo / UndoInterpolate.java

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