#!/usr/bin/env ruby

begin
	require 'gtk2'
rescue LoadError
	$stderr << "########################################################\n"
	$stderr << "# In order to run this programm you need ruby-gnome2!  #\n"
	$stderr << "########################################################\n"
	raise
end

begin
	require 'gconf2'
rescue LoadError
	$stderr << "########################################################\n"
	$stderr << "# In order to run this programm you need ruby-gconf2!  #\n"
	$stderr << "########################################################\n"
	raise
end

require 'yaml'
require 'pp'
require 'optparse'
require 'ostruct'

TRAYCOMMANDVERSION = [0,1]

Gtk.init
$options = OpenStruct.new
	
optpars = OptionParser.new { |opts|
	
	opts.banner = "Usage: #{File.basename($0)} [options]"
	
	opts.separator "Options:"
	
	opts.on("--configfile=file", "Path to the configfile.") {|string|
		$options.configfile = string
	}	

	opts.on_tail("--version", "Show version and exit") {
		puts "traycommand #{TRAYCOMMANDVERSION.join('.')}"
		puts "written by Benjamin Kellermann <Benjamin.Kellermann@gmx.de>"
		exit
	}
}

begin
	optpars.parse!
	$options.configfile ||= "layoutswitch.yaml"
rescue => e
	puts e
	puts optpars
	exit
end

############################################################################
# init the things from the configfile
############################################################################
unless File.exist?($options.configfile) and $config = YAML::load_file($options.configfile)
	$config = []
	2.times{ 
		$config << {"command"  => "/path/to/command.sh",
								"icon"     => "/path/to/icon.{png|ico|jpg|...}",
								"menutext" => "Some Useful text"}
	}
	File.open($options.configfile, 'w') do |out|
		out << $config.to_yaml
	end
	puts "Created configfile template, exiting now"
	exit
end

############################################################################
# init the tray and GTK stuff
############################################################################
currentconfig = 0
$sicon = Gtk::StatusIcon.new
$sicon.pixbuf = Gdk::Pixbuf.new(File.expand_path($config[currentconfig]["icon"]))

# Add a menu
menu = Gtk::Menu.new

$config.each_with_index{|citem,i|
	item = Gtk::MenuItem.new(citem["menutext"])
	item.signal_connect("activate"){
		`#{citem["command"]}`
		$sicon.pixbuf = Gdk::Pixbuf.new(File.expand_path(citem["icon"]))
		currentconfig = i
	}
	menu.append(item.show)
}
$sicon.signal_connect("activate"){
	nextconf = (currentconfig+1) % $config.size
	`#{$config[nextconf]["command"]}`
	$sicon.pixbuf = Gdk::Pixbuf.new(File.expand_path($config[nextconf]["icon"]))
	currentconfig = nextconf
}




############################################################################
# set the about dialog
############################################################################
aboutitem = Gtk::ImageMenuItem.new(Gtk::Stock::ABOUT)
aboutitem.signal_connect("activate") {
			Gtk::AboutDialog.set_email_hook {|about, link|
		`xdg-open mailto:#{link}`
	}
	Gtk::AboutDialog.set_url_hook {|about, link|
		`xdg-open #{link}`
	}

	a = Gtk::AboutDialog.new
	a.authors   = ["Benjamin Kellermann <Benjamin.Kellermann@gmx.de>"]
	a.comments  = "This is an applet to execute commands fastly."
	a.copyright = "Copyright (C) 2009 Benjamin Kellermann"
	a.license   = "This program is licenced under CC-by-sa"
	a.logo_icon_name = "gtk-about"
	a.name      = "keyspeedapplet"
	a.version   = TRAYCOMMANDVERSION.join(".")
	a.website   = "http://www.eigenheimstrasse.de/~ben/traycommand/"
	a.website_label = "Download Website"
	a.signal_connect('response') { a.destroy }
	a.show
}
menu.append(aboutitem.show)

# add an exit button
quit = Gtk::ImageMenuItem.new(Gtk::Stock::QUIT)
quit.signal_connect("activate") { Gtk.main_quit }
menu.append(Gtk::SeparatorMenuItem.new.show)
menu.append(quit.show)

$sicon.signal_connect('popup-menu') do |w,e,time|
	menu.popup(nil, nil, e, time) 
end

pid = fork {
	Signal.trap("USR1") {
		$sicon.activate
	}
	Gtk.main
}
File.open("/tmp/traycommand-#{$options.configfile}.pid","w"){|f|
	f << pid
}

Process.waitpid(pid)