added option 'largest fragment' to property calculation

Author: thsa

src/main/java/com/actelion/research/gui/table/JTableWithRowNumbers.java

@@ -277,9 +277,11 @@ public void mouseMoved(MouseEvent e) {
 		mDragStartRowHeight = mTable.getRowHeight();
 		int tolerance = HiDPIHelper.scale(cResizeTolerance);
 		int row = y / mDragStartRowHeight;
+		if (row >= mTable.getRowCount())
+			row = -1;
 		int fracY = y % mDragStartRowHeight;
 
-		mResizingStartRow = (fracY <= tolerance && row > 0) ? row - 1 : (fracY >= mDragStartRowHeight - tolerance) ? row : -1;
+		mResizingStartRow = (row == -1) ? -1 : (fracY <= tolerance && row > 0) ? row - 1 : (fracY >= mDragStartRowHeight - tolerance) ? row : -1;
 		setCursor(mResizingStartRow == -1 ? JTableWithRowNumbers.sDefaultCursor : JTableWithRowNumbers.sResizeCursor);
 
 		if (mHighlightedRow != row) {