* 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/promptdialog.rb

@@ -0,0 +1,131 @@
+#
+#  tkextlib/iwidgets/promptdialog.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/iwidgets.rb'
+
+module Tk
+  module Iwidgets
+    class Promptdialog < Tk::Iwidgets::Dialog
+    end
+  end
+end
+
+class Tk::Iwidgets::Promptdialog
+  TkCommandNames = ['::iwidgets::promptdialog'.freeze].freeze
+  WidgetClassName = 'Promptdialog'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  # index method is not available, because it shows index of the entry field
+  def default(name)
+    tk_call(@path, 'default', tagid(name))
+    self
+  end
+
+  def hide(name)
+    tk_call(@path, 'hide', tagid(name))
+    self
+  end
+
+  def invoke(name=nil)
+    if name
+      tk_call(@path, 'invoke', tagid(name))
+    else
+      tk_call(@path, 'invoke')
+    end
+    self
+  end
+
+  def show(name)
+    tk_call(@path, 'show', tagid(name))
+    self
+  end
+
+
+  # based on Tk::Iwidgets::Entryfield
+  def clear
+    tk_call(@path, 'clear')
+    self
+  end
+
+  def delete(first, last=None)
+    tk_send_without_enc('delete', first, last)
+    self
+  end
+
+  def value
+    _fromUTF8(tk_send_without_enc('get'))
+  end
+  def value= (val)
+    tk_send_without_enc('delete', 0, 'end')
+    tk_send_without_enc('insert', 0, _get_eval_enc_str(val))
+    val
+  end
+  alias get value
+  alias set value=
+
+  def cursor=(index)
+    tk_send_without_enc('icursor', index)
+    #self
+    index
+  end
+  alias icursor cursor=
+
+  def index(index)
+    number(tk_send_without_enc('index', index))
+  end
+
+  def insert(pos,text)
+    tk_send_without_enc('insert', pos, _get_eval_enc_str(text))
+    self
+  end
+
+  def mark(pos)
+    tk_send_without_enc('scan', 'mark', pos)
+    self
+  end
+  def dragto(pos)
+    tk_send_without_enc('scan', 'dragto', pos)
+    self
+  end
+  def selection_adjust(index)
+    tk_send_without_enc('selection', 'adjust', index)
+    self
+  end
+  def selection_clear
+    tk_send_without_enc('selection', 'clear')
+    self
+  end
+  def selection_from(index)
+    tk_send_without_enc('selection', 'from', index)
+    self
+  end
+  def selection_present()
+    bool(tk_send_without_enc('selection', 'present'))
+  end
+  def selection_range(s, e)
+    tk_send_without_enc('selection', 'range', s, e)
+    self
+  end
+  def selection_to(index)
+    tk_send_without_enc('selection', 'to', index)
+    self
+  end
+
+  def xview(*index)
+    if index.size == 0
+      list(tk_send_without_enc('xview'))
+    else
+      tk_send_without_enc('xview', *index)
+      self
+    end
+  end
+  def xview_moveto(*index)
+    xview('moveto', *index)
+  end
+  def xview_scroll(*index)
+    xview('scroll', *index)
+  end
+end