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#
# vdr-scripting - A plugin for the Linux Video Disk Recorder
# Copyright (c) 2009 Tobias Grimm <vdr@e-tobi.net>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
#
module Vdr
module Osd
#
# An #Item represents an entry in an OSD #Menu.
# Each item has a #text that will be shown on the menu and a
# #context which can be used to store any kind of object
# associated with this menu item.
#
# == Example
#
# new_menu = Menu.new('A simple menu') do |menu|
# menu.add_item(Item.new('First Item').on_select { puts 'Item 1 selected' })
# new_item = Item.new('Second Item') do |item|
# item.context = { :first_name => 'James Tiberius', :last_name => 'Kirk' }
# item.on_select do |selected_item|
# name = selected_item.context
# puts "Selected #{name[:last_name]}, #{name[:first_name]}"
# end
# end
# menu.add_item(new_item)
# end
#
class Item < Vdr::Swig::COsdItem
# The text of the item which will be shown on its parent #Menu
attr_reader :text
# A free assignable context associated with an #Item
attr_accessor :context
#
# Creates a new item. If _text_ is given, it will become the text displayed on the
# parent menu for this item.
#
# Item.new('my item') #=> Creates a new item shown with 'my item'
# Item.new {|i| i.title = 'another item'} #=> Creates a new item and sets its title to 'another item'
#
def initialize(text = nil) # :yields: item
@text = text
super(text)
yield self if block_given?
end
# Change the item text
def text=(text)
@text = text
set_text(text)
end
# The block assigned to on_select will be executed, when
# the item is selected from the menu
def on_select(&block) # :yields: item
@select = block
end
def process_key(key) # :nodoc:
state = super(key)
if key == Vdr::Swig::KOk
if @select
@select.call(self)
end
return Vdr::Swig::OsUnknown
end
return state
end
end
end
end
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