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#!/usr/bin/env python

# Copyright (C) 2012 Cristhofer Travieso <cristhofert97@gmail.com>

# 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 St, Fifth Floor, Boston, MA  02110-1301  USA

from gi.repository import Gtk

class Canvas(Gtk.VBox):
    def __init__(self):
	Gtk.VBox.__init__(self)
	
	self.entry = Gtk.Entry()
	self.add(self.entry)
	
	table = Gtk.Table()
	
	number = []
	for i in range(0, 10):
	    button = Gtk.Button(i)
	    button.connect('clicked', self.add_character)
	    number.append(button)
	
	sign = []
	for i in ['+', '-', '*', '/']:
	    button = Gtk.Button(i)
	    button.connect('clicked', self.add_character)
	    sign.append(button)

	equals_button = Gtk.Button('=')
	equals_button.connect('clicked', self.work)
	self.add(equals_button)

    def add_character(self, widget):
        text = widget.get_label()
        text_a = self.entrada.get_text()
        text_end = text_a + text
        self.entry.set_text(text_end)

    def work(self, widget):
        entry_text = self.entry.get_text()
        result = eval(entry_text)
        self.entry.set_text(str(result))