New RowIsContainer method which can replace CellHasDropFlag to determine if the row is a container and if it is currently expanded or collapsed. Fixed auto-expand d&d to use this instead of CellHasDropFlag so it will still autoexpand when drop flags are not used.

git-svn-id: svn://10.0.0.236/trunk@8728 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/lib/mac/UserInterface/Tables/CStandardFlexTable.cp

@@ -1909,7 +1909,7 @@ void CStandardFlexTable::InsideDropArea(DragReference inDragRef)
 			// the user's holding the mouse down on this row, & we just noticed
 			STableCell cell(mDropRow, GetHiliteColumn());
 			Boolean expanded;
-			if (CellHasDropFlag(cell, expanded) && !expanded)
+			if (RowIsContainer(mDropRow, &expanded) && !expanded)
 			{
 				SetCellExpansion(cell, true);
 				// The revealed rows should be there now, just draw them.
@@ -2623,6 +2623,21 @@ void CStandardFlexTable::ClickCountToOpen ( Uint16 inNewCount )
 } // CStandardFlexTable::TableSupportsNaturalOrderSort
 
 
+//----------------------------------------------------------------------------------------
+Boolean
+CStandardFlexTable :: RowIsContainer( const TableIndexT & inRow, Boolean* outIsExpanded ) const
+// Default implementation, just returns false.
+//----------------------------------------------------------------------------------------
+{
+	Assert_(outIsExpanded != NULL);
+	if ( outIsExpanded )
+		*outIsExpanded = false;
+		
+	return false;
+
+} // RowIsContainer
+
+
 #pragma mark -
 #if defined(QAP_BUILD)
 

mozilla/lib/mac/UserInterface/Tables/CStandardFlexTable.h

@@ -369,6 +369,8 @@ protected:
 							TableIndexT		inDropRow);
 	virtual Boolean		RowIsContainer(
 							const TableIndexT & /* inRow */ ) const { return false; }
+	virtual Boolean		RowIsContainer(
+							const TableIndexT & /* inRow */, Boolean* /*outIsExpanded*/ ) const ;
 	void				ComputeItemDropAreas(
 							const Rect& inLocalCellRect,
 							Rect& outTop,