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# -*- coding: utf-8 -*-
# Copyright 2009 Simon Schampijer
# Copyright 2013 Martin Abente
#
# 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
"""HelloWorld Activity: A case study for developing an activity."""
import gtk
import logging
from datetime import datetime
from gettext import gettext as _
from sugar.activity import activity
from sugar.graphics.toolbarbox import ToolbarBox
from sugar.activity.widgets import ActivityButton
from sugar.activity.widgets import ActivityToolbox
from sugar.activity.widgets import TitleEntry
from sugar.activity.widgets import StopButton
from sugar.activity.widgets import ShareButton
class HelloWorldActivity(activity.Activity):
"""HelloWorldActivity class as specified in activity.info"""
def __init__(self, handle):
"""Set up the HelloWorld activity."""
activity.Activity.__init__(self, handle)
# we do not have collaboration features
# make the share option insensitive
self.max_participants = 1
# toolbar with the new toolbar redesign
toolbar_box = ToolbarBox()
activity_button = ActivityButton(self)
toolbar_box.toolbar.insert(activity_button, 0)
activity_button.show()
title_entry = TitleEntry(self)
toolbar_box.toolbar.insert(title_entry, -1)
title_entry.show()
share_button = ShareButton(self)
toolbar_box.toolbar.insert(share_button, -1)
share_button.show()
separator = gtk.SeparatorToolItem()
separator.props.draw = False
separator.set_expand(True)
toolbar_box.toolbar.insert(separator, -1)
separator.show()
stop_button = StopButton(self)
toolbar_box.toolbar.insert(stop_button, -1)
stop_button.show()
self.set_toolbar_box(toolbar_box)
toolbar_box.show()
# advanced example widgets
vbox = gtk.VBox()
self.label = gtk.Label()
self.entry = gtk.Entry()
self.text = gtk.TextView()
vbox.add(self.label)
vbox.add(self.entry)
vbox.add(self.text)
self.set_canvas(vbox)
vbox.show_all()
self._logging_example()
self._i18n_example()
def _logging_example(self):
""" Suppose we want to log specific info"""
# It will initialized with sugar global level
# logging.setLevel(logging.DEBUG)
# debug is typically the proper replacement for random prints
logging.debug("I want to log the fact that I got here, but not always")
# info is the proper way to log messages during normal executions
logging.info("Got to this point at %s ...", datetime.now())
# error is used when there something wrong happening, but is expected
logging.error("Maybe some value was out of its expected range")
# exception is the proper way to log our exceptions
try:
somefile = file("wont-find-this-file")
except IOError:
logging.exception("The file was not found")
def _i18n_example(self):
""" How-to work with i18n"""
# the i18n strings are stored at po/ directory
# to generate the i18n table: ./setup.py genpot
i18n_string = _("Hello World!")
self.label.set_text(i18n_string)
def read_file(self, tmp_file):
""" datastore high-level interaction to read """
logging.debug("The tmp_file is at %s, for reading", tmp_file)
# resume metadata
try:
self.entry.set_text(self.metadata['entry'])
except KeyError:
logging.error("No entry metadata")
# resume data
data = open(tmp_file, "r")
buffer = self.text.get_buffer()
buffer.set_text(data.read())
data.close()
def write_file(self, tmp_file):
""" datastore high-level interaction to write """
logging.debug("The tmp_file is at %s, for writing", tmp_file)
# save metadata
self.metadata['entry'] = self.entry.get_text()
# save data
data = open(tmp_file, "w")
buffer = self.text.get_buffer()
data.write(buffer.get_text(*buffer.get_bounds()))
data.close()
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