* ext/tk/lib/tk.rb, ext/tk/lib/*: make default widget set

  switchable between Tk (standard Tcl/Tk widget set) and 
  Ttk (Tile). Initial default widget set is Tk. Now, toplevel 
  widget classes are removed and defined as aliases. 
  For example, "TkButton" is an alias of the "Tk::Button" class. 
  Those aliases are replaced when switching default widget set. 
  "Tk.default_widget_set=" is the method for switching default 
  widget set. "Tk.default_widget_set = :Ttk" defines Ttk (Tile) 
  widget set as default. It means that "TkButton" denotes 
  "Tk::Tile::Button" class. And then, "TkButton.new" creates 
  a Tk::Tile::Button widget. Of course, you can back to use 
  standard Tk widgets as the default widget set by calling 
  "Tk.default_widget_set = :Tk", whenever you want. Based on 
  thie feature, you can use Ttk widget styling engine on your 
  old Ruby/Tk application without modifying its source, if you 
  don'tuse widget options unsupported on Ttk widgets (At first, 
  call "Tk.default_widget_set = :Ttk", and next load and run 
  your application). 
  This is one step for supporting Tcl/Tk8.5 features.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15618 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 5 deletions

diff --git a/ext/tk/lib/tk/scrollbar.rb b/ext/tk/lib/tk/scrollbar.rb
index dda7a96d87..66eadbd65f 100644
--- a/ext/tk/lib/tk/scrollbar.rb
+++ b/ext/tk/lib/tk/scrollbar.rb
@@ -105,10 +105,11 @@ class Tk::Scrollbar<TkWindow
   end
 end
 
-TkScrollbar = Tk::Scrollbar unless Object.const_defined? :TkScrollbar
+#TkScrollbar = Tk::Scrollbar unless Object.const_defined? :TkScrollbar
+Tk.__set_toplevel_aliases__(:Tk, Tk::Scrollbar, :TkScrollbar)
 
 
-class Tk::XScrollbar<TkScrollbar
+class Tk::XScrollbar<Tk::Scrollbar
   def create_self(keys)
     keys = {} unless keys
     keys['orient'] = 'horizontal'
@@ -117,10 +118,11 @@ class Tk::XScrollbar<TkScrollbar
   private :create_self
 end
 
-TkXScrollbar = Tk::XScrollbar unless Object.const_defined? :TkXScrollbar
+#TkXScrollbar = Tk::XScrollbar unless Object.const_defined? :TkXScrollbar
+Tk.__set_toplevel_aliases__(:Tk, Tk::XScrollbar, :TkXScrollbar)
 
 
-class Tk::YScrollbar<TkScrollbar
+class Tk::YScrollbar<Tk::Scrollbar
   def create_self(keys)
     keys = {} unless keys
     keys['orient'] = 'vertical'
@@ -129,4 +131,5 @@ class Tk::YScrollbar<TkScrollbar
   private :create_self
 end
 
-TkYScrollbar = Tk::YScrollbar unless Object.const_defined? :TkYScrollbar
+#TkYScrollbar = Tk::YScrollbar unless Object.const_defined? :TkYScrollbar
+Tk.__set_toplevel_aliases__(:Tk, Tk::YScrollbar, :TkYScrollbar)