#!python
#
# Intention of script:
#	Download a textfile from web
#	and present in a gtk window
#
#	If the file is changed the
#	windows information shall
#	change and the window
#	reappear
#

import gtk
import pycurl
import StringIO
import time
from threading import Thread

class Textwindow(gtk.Window):

    def __init__(self, parent=None):
        gtk.Window.__init__(self)
        try:
            self.set_screen(parent.get_screen())
        except AttributeError:
            self.connect('destroy', lambda *w: gtk.main_quit())

        self.set_default_size(200, 100)
        self.set_border_width(0)

        view = gtk.TextView()
        view.set_wrap_mode(gtk.WRAP_WORD)

        buffer = view.get_buffer()

        self.add(view)
	self.buffer = buffer

    def show_page(self, buffer, data):
        buffer.set_text("", 0)
        iter = buffer.get_iter_at_offset(0)
        buffer.insert(iter, data)

    def update(self, text):
	self.show_page(self.buffer, text)
	self.show_all()

class checkforupdate(Thread):
   def __init__ (self,window):
      Thread.__init__(self)
      self.window = window
   def run(self):
      while 1:
	pyhandler = pycurl.Curl()
	string = StringIO.StringIO()
	getdata(string, pyhandler)
	if string.getvalue() != '':
		self.window.update(string.getvalue())
	pyhandler.close()
	string.close()
	#Check for update from web every 2secs
        time.sleep(2)

class guithread(Thread):
    def __init__(self):
        Thread.__init__(self)
    def run(self):
        gtk.main()

def main():
    window = Textwindow()

    current = checkforupdate(window)
    current.start()

    gui = guithread()
    gui.start()

def getdata(string, pyhandler):
    pyhandler.setopt(pycurl.WRITEFUNCTION, string.write)
    pyhandler.setopt(pycurl.URL, "http://www.ehjelle.no/testdata.txt")
    pyhandler.perform()


if __name__ == '__main__':
    main()