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# -*- coding: utf-8 -*-
module Gtk
class ContextMenu
extend Gem::Deprecate
def initialize(*context)
reset(context) end
def reset(context)
@contextmenu = context
end
def register(label, condition=:itself, &callback)
@contextmenu = @contextmenu.push([label, condition.to_proc, callback])
end
alias :registmenu :register
deprecate :registmenu, "register", 2018, 04
def line(&proc)
register(nil, proc || :itself)
end
alias :registline :line
deprecate :registline, "line", 2018, 04
# メニューが閉じられた時、自身を自動的に破棄する Gtk::Menu を作成して返す
def temporary_menu
menu = Gtk::Menu.new
menu.ssc(:selection_done) do
menu.destroy
false end
menu.ssc(:cancel) do
menu.destroy
false end
menu end
def build!(widget, optional, menu = temporary_menu)
@contextmenu.each do |param|
label, cond, proc, icon = param
if cond.call(*[optional, widget][0, (cond.arity < 0 ? 1 : cond.arity)])
if label
item = gen_menu_item(label_text(label, optional, widget), icon, optional, widget)
if proc
item.ssc(:activate) do |w|
proc.call(*[optional, widget][0...proc.arity])
false
end
end
menu.append(item)
else
menu.append(Gtk::MenuItem.new)
end
end
end
menu
end
def popup(widget, optional)
menu = build!(widget, optional)
if not menu.children.empty?
menu.show_all.popup(nil, nil, 0, 0)
end
end
private
def label_text(label, optional, widget)
if defined?(label.call)
label.call(*[optional, widget][0, (label.arity == -1 ? 1 : label.arity)])
else
label
end
end
def gen_menu_item(label_text, icon, optional, widget)
if icon.is_a?(Proc)
icon = icon.call(*[optional, widget][0, (icon.arity == -1 ? 1 : icon.arity)])
end
if icon
Gtk::ImageMenuItem.new(label: label_text, use_underline: false).tap do |item|
item.set_image(Gtk::WebIcon.new(icon, 16, 16))
item.always_show_image = true
end
else
Gtk::MenuItem.new(label: label_text, use_underline: false)
end
end
end
end
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