--- /dev/null
+package tim.prune.undo;\r
+\r
+import tim.prune.I18nManager;\r
+import tim.prune.data.DataPoint;\r
+import tim.prune.data.Track;\r
+import tim.prune.data.TrackInfo;\r
+\r
+/**\r
+ * Operation to undo the deletion of marked points\r
+ */\r
+public class UndoDeleteMarked implements UndoOperation\r
+{\r
+ private DataPoint[] _contents = null;\r
+ protected int _numPointsDeleted = -1;\r
+ private boolean[] _segmentStarts = null;\r
+\r
+\r
+ /**\r
+ * Constructor\r
+ * @param inTrack track contents to copy\r
+ */\r
+ public UndoDeleteMarked(Track inTrack)\r
+ {\r
+ _contents = inTrack.cloneContents();\r
+ // Copy boolean segment start flags\r
+ _segmentStarts = new boolean[inTrack.getNumPoints()];\r
+ for (int i=0; i<inTrack.getNumPoints(); i++) {\r
+ _segmentStarts[i] = inTrack.getPoint(i).getSegmentStart();\r
+ }\r
+ }\r
+\r
+\r
+ /**\r
+ * Set the number of points deleted\r
+ * (only known after attempted compression)\r
+ * @param inNum number of points deleted\r
+ */\r
+ public void setNumPointsDeleted(int inNum)\r
+ {\r
+ _numPointsDeleted = inNum;\r
+ }\r
+\r
+\r
+ /**\r
+ * @return description of operation including parameters\r
+ */\r
+ public String getDescription()\r
+ {\r
+ String desc = I18nManager.getText("undo.deletemarked");\r
+ if (_numPointsDeleted > 0)\r
+ desc = desc + " (" + _numPointsDeleted + ")";\r
+ return desc;\r
+ }\r
+\r
+\r
+ /**\r
+ * Perform the undo operation on the given Track\r
+ * @param inTrackInfo TrackInfo object on which to perform the operation\r
+ */\r
+ public void performUndo(TrackInfo inTrackInfo) throws UndoException\r
+ {\r
+ // restore track to previous values\r
+ inTrackInfo.getTrack().replaceContents(_contents);\r
+ // Copy boolean segment start flags\r
+ Track track = inTrackInfo.getTrack();\r
+ if (_segmentStarts.length != track.getNumPoints())\r
+ throw new UndoException("Cannot undo delete - track length no longer matches");\r
+ for (int i=0; i<_segmentStarts.length; i++) {\r
+ track.getPoint(i).setSegmentStart(_segmentStarts[i]);\r
+ }\r
+ // clear selection\r
+ inTrackInfo.getSelection().clearAll();\r
+ }\r
+}
\ No newline at end of file