# -*- coding: utf-8 -*-
#
# File: portato/gui/gtk/uncaughtException.py
# This file is part of the Portato-Project, a graphical portage-frontend.
#
# Copyright (C) 2007 René 'Necoro' Neumann
# This is free software.  You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by Gustavo Carneiro
# original code: http://www.daa.com.au/pipermail/pygtk/attachments/20030828/2d304204/gtkexcepthook.py
#
# Modified by René 'Necoro' Neumann

import sys
import gtk, pango
from StringIO import StringIO
import traceback
from gettext import lgettext as _

from portato.helper import error

class UncaughExceptionDialog(gtk.MessageDialog):

	def __init__(self, type, value, tb):

		super(UncaughExceptionDialog,self).__init__(parent=None, flags=0,  type=gtk.MESSAGE_WARNING, buttons=gtk.BUTTONS_NONE, message_format=_("A programming error has been detected during the execution of this program."))
		self.set_title(_("Bug Detected"))
		self.format_secondary_text(_("It probably isn't fatal, but should be reported to the developers nonetheless."))

		self.add_button(_("Show Details"), 1)
		self.add_button(gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE)

		# Details
		self.textview = gtk.TextView()
		self.textview.set_editable(False)
		self.textview.modify_font(pango.FontDescription("Monospace"))
	
		self.sw = gtk.ScrolledWindow();
		self.sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
		self.sw.add(self.textview)
	
		self.tbFrame = gtk.Frame()
		self.tbFrame.set_shadow_type(gtk.SHADOW_IN)
		self.tbFrame.add(self.sw)
		self.tbFrame.set_border_width(6)
		
		self.vbox.add(self.tbFrame)
		
		textbuffer = self.textview.get_buffer()
		textbuffer.set_text(get_trace(type, value, tb))
		self.textview.set_size_request(gtk.gdk.screen_width()/2, gtk.gdk.screen_height()/3)

		self.details = self.tbFrame
		self.set_position(gtk.WIN_POS_CENTER)
		self.set_gravity(gtk.gdk.GRAVITY_CENTER)

	def run (self):
		while True:
			resp = super(UncaughExceptionDialog, self).run()
			if resp == 1:
				self.details.show_all()
				self.set_response_sensitive(1, False)
			else:
				break
		self.destroy()

def get_trace(type, value, tb):
	trace = StringIO()
	traceback.print_exception(type, value, tb, None, trace)
	traceStr = trace.getvalue()
	trace.close()
	return traceStr
	
def register_ex_handler():
	
	def handler(*args):
		error(_("An uncaught exception has occured:\n%s"), get_trace(*args))
		UncaughExceptionDialog(*args).run()

	sys.excepthook = handler