implemented ScrollLines/Pages() for all classes in wxGTK, not just wxTextCtrl (patch 1281503)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37407 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/textctrl.h

@@ -151,10 +151,6 @@ public:
     virtual void Freeze();
     virtual void Thaw();
 
-    // textctrl specific scrolling
-    virtual bool ScrollLines(int lines);
-    virtual bool ScrollPages(int pages);
-
     // implementation only from now on
 
     // wxGTK-specific: called recursively by Enable,
@@ -178,13 +174,6 @@ protected:
     // common part of all ctors
     void Init();
 
-    // get the vertical adjustment, if any, NULL otherwise
-    GtkAdjustment *GetVAdj() const;
-
-    // scroll the control by the given number of pixels, return true if the
-    // scroll position changed
-    bool DoScroll(GtkAdjustment *adj, int diff);
-
     // Widgets that use the style->base colour for the BG colour should
     // override this and return true.
     virtual bool UseGTKStyleBase() const { return true; }

include/wx/gtk/window.h

@@ -99,6 +99,8 @@ public:
     virtual int GetScrollRange( int orient ) const;
     virtual void ScrollWindow( int dx, int dy,
                                const wxRect* rect = (wxRect *) NULL );
+    virtual bool ScrollLines(int lines);
+    virtual bool ScrollPages(int pages);
 
 #if wxUSE_DRAG_AND_DROP
     virtual void SetDropTarget( wxDropTarget *dropTarget );
@@ -268,6 +270,10 @@ protected:
     // ApplyWidgetStyle -- override this, not ApplyWidgetStyle
     virtual void DoApplyWidgetStyle(GtkRcStyle *style);
 
+protected:
+    // GtkAdjustment to be used by Scroll{Lines,Pages}
+    void SetVScrollAdjustment(GtkAdjustment* adj);
+
 private:
     DECLARE_DYNAMIC_CLASS(wxWindowGTK)
     DECLARE_NO_COPY_CLASS(wxWindowGTK)