* ext/tk/, ext/tcltklib/: bug fix

* ext/tk/lib/tk.rb: better operation for SIGINT when processing callbacks.
* ext/tk/lib/tk/msgcat.rb: ditto.
* ext/tk/lib/tk/variable.rb: ditto.
* ext/tk/lib/tk/timer.rb: ditto.
* ext/tk/lib/tk/validation.rb: add Tk::ValidateConfigure.__def_validcmd()
  to define validatecommand methods easier
* ext/tk/lib/tk.rb (_genobj_for_tkwidget): support autoload Tk ext classes
* ext/tk/lib/tk/canvas.rb and so on: remove the parent widget type check
  for items (e.g. canvas items; depends on the class) to avoid some troubles
  on Tk extension widget class definition.
* ext/tk/lib/tkextlib/: add Iwidget and TkTable extension support
* ext/tk/sample/tkextlib/: add samples of Iwidget and TkTable


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@6630 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/tk/lib/tkextlib/iwidgets/optionmenu.rb

@@ -0,0 +1,87 @@
+#
+#  tkextlib/iwidgets/optionmenu.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/iwidgets.rb'
+
+module Tk
+  module Iwidgets
+    class  Optionmenu < Tk::Iwidgets::Labeledwidget
+    end
+  end
+end
+
+class Tk::Iwidgets::Optionmenu
+  TkCommandNames = ['::iwidgets::optionmenu'.freeze].freeze
+  WidgetClassName = 'Optionmenu'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def delete(first, last=nil)
+    if last
+      tk_call(@path, 'delete', first, last)
+    else
+      tk_call(@path, 'delete', first)
+    end
+    self
+  end
+
+  def disable(idx)
+    tk_call(@path, 'disable', idx)
+    self
+  end
+
+  def enable(idx)
+    tk_call(@path, 'enable', idx)
+    self
+  end
+
+  def get(first=nil, last=nil)
+    if last
+      simplelist(tk_call(@path, 'get', first, last))
+    elsif first
+      tk_call(@path, 'get', first)
+    else
+      tk_call(@path, 'get')
+    end
+  end
+  def get_range(first, last)
+    get(first, last)
+  end
+  def get_selected
+    get()
+  end
+
+  def index(idx)
+    number(tk_call(@path, 'index', idx))
+  end
+
+  def insert(idx, *args)
+    tk_call(@path, 'insert', idx, *args)
+    self
+  end
+
+  def select(idx)
+    tk_call(@path, 'select', idx)
+    self
+  end
+
+  def sort(*params, &b)
+    # see 'lsort' man page about params
+    if b
+      tk_call(@path, 'sort', '-command', proc(&b), *params)
+    else
+      tk_call(@path, 'sort', *params)
+    end
+    self
+  end
+  def sort_ascending
+    tk_call(@path, 'sort', 'ascending')
+    self
+  end
+  def sort_descending
+    tk_call(@path, 'sort', 'descending')
+    self
+  end
+end