=begin
  tree_combo.rb - Gtk::TreeView and Gtk::CellRendererCombo
  sample script.

  Copyright (C) 2006-2015 Masao Mutoh
  Copyright (c) 2006-2015 Ruby-GNOME2 Project Team
  This program is licenced under the same licence as Ruby-GNOME2.
=end

require "gtk3"

T_APPLICATION       = 0
T_COMBO_TEXT_COLUMN = 1
T_COMBO_MODEL       = 2
T_COMBO_HAS_ENTRY   = 3
T_COMBO_EDITABLE    = 4
T_COMBO_TEXT        = 5

# The COMPUTER combo model
combo_model = Gtk::ListStore.new(String)

%w(Ruby Perl Python Java).each do |v|
  iter = combo_model.append
  iter[0] = v
end

# The table model.
model = Gtk::ListStore.new(String,         # T_APPLICATION
                           Integer,        # T_COMBO_TEXT_COLUMN
                           Gtk::ListStore, # T_COMBO_MODEL
                           TrueClass,      # T_COMBO_HAS_ENTRY
                           TrueClass,      # T_COMBO_EDITABLE
                           String)         # T_COMBO_TEXT

view = Gtk::TreeView.new(model)

# 1st column(Text)
trenderer = Gtk::CellRendererText.new
tcol = Gtk::TreeViewColumn.new("Application", trenderer,
                               :text => T_APPLICATION)
view.append_column(tcol)

# 2nd column(Combo)
crenderer = Gtk::CellRendererCombo.new
crenderer.signal_connect("edited") do |_renderer, path, text|
  model.get_iter(path)[T_COMBO_TEXT] = text
end

ccol = Gtk::TreeViewColumn.new("Language", crenderer,
                               :text_column => T_COMBO_TEXT_COLUMN,
                               :model => T_COMBO_MODEL,
                               :has_entry => T_COMBO_HAS_ENTRY,
                               :editable => T_COMBO_EDITABLE,
                               :text => T_COMBO_TEXT)
view.append_column(ccol)

# Create rows.
(1..2).each do |v|
  iter = model.append
  iter[T_APPLICATION] = "application #{v}"
  iter[T_COMBO_MODEL] = combo_model
  iter[T_COMBO_HAS_ENTRY] = false
  iter[T_COMBO_EDITABLE] = true
  iter[T_COMBO_TEXT] = combo_model.get_iter("0")[0]
end

win = Gtk::Window.new
win.signal_connect("delete_event") { Gtk.main_quit }

win.add(view)
win.show_all

Gtk.main