* 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/selectiondialog.rb

@@ -0,0 +1,92 @@
+#
+#  tkextlib/iwidgets/selectiondialog.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/iwidgets.rb'
+
+module Tk
+  module Iwidgets
+    class Selectiondialog < Tk::Iwidgets::Dialog
+    end
+  end
+end
+
+class Tk::Iwidgets::Selectiondialog
+  TkCommandNames = ['::iwidgets::selectiondialog'.freeze].freeze
+  WidgetClassName = 'Selectiondialog'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def child_site
+    window(tk_call(@path, 'childsite'))
+  end
+
+  def clear_items
+    tk_call(@path, 'clear', 'items')
+    self
+  end
+
+  def clear_selection
+    tk_call(@path, 'clear', 'selection')
+    self
+  end
+
+  def get
+    tk_call(@path, 'get')
+  end
+
+  def insert_items(idx, *args)
+    tk_call(@path, 'insert', 'items', idx, *args)
+  end
+
+  def insert_selection(pos, text)
+    tk_call(@path, 'insert', 'selection', pos, text)
+  end
+
+  def select_item
+    tk_call(@path, 'selectitem')
+    self
+  end
+
+  # based on TkListbox ( and TkTextWin )
+  def curselection
+    list(tk_send_without_enc('curselection'))
+  end
+  def delete(first, last=None)
+    tk_send_without_enc('delete', first, last)
+    self
+  end
+  def index(index)
+    tk_send_without_enc('index', index).to_i
+  end
+  def nearest(y)
+    tk_send_without_enc('nearest', y).to_i
+  end
+  def scan_mark(x, y)
+    tk_send_without_enc('scan', 'mark', x, y)
+    self
+  end
+  def scan_dragto(x, y)
+    tk_send_without_enc('scan', 'dragto', x, y)
+    self
+  end
+  def selection_anchor(index)
+    tk_send_without_enc('selection', 'anchor', index)
+    self
+  end
+  def selection_clear(first, last=None)
+    tk_send_without_enc('selection', 'clear', first, last)
+    self
+  end
+  def selection_includes(index)
+    bool(tk_send_without_enc('selection', 'includes', index))
+  end
+  def selection_set(first, last=None)
+    tk_send_without_enc('selection', 'set', first, last)
+    self
+  end
+  def size
+    tk_send_without_enc('size').to_i
+  end
+end