Interface cleanups to prepare the return of "grouped sorting"

- Rename setCategorizedSorting() to setGroupedSorting()
- Change the model interface to allow enabling/disabling grouping
  without the need to declare a role (the sort role will be taken).
- Add dummy group role implementation in KFileItemModel

The grouping code itself requires some cleanups and might crash
at the moment or lead to weird layouts.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/views/viewproperties.h b/src/views/viewproperties.h
index c95134a15..50b3b3f1e 100644
--- a/src/views/viewproperties.h
+++ b/src/views/viewproperties.h
@@ -62,8 +62,8 @@ public:
     void setHiddenFilesShown(bool show);
     bool hiddenFilesShown() const;
 
-    void setCategorizedSorting(bool categorized);
-    bool categorizedSorting() const;
+    void setGroupedSorting(bool grouped);
+    bool groupedSorting() const;
 
     void setSorting(DolphinView::Sorting sorting);
     DolphinView::Sorting sorting() const;