# Hello World opens a big window in Sugar. When the user clicks the button,
# the text "Hello World" appears in the Sugar log files.
import logging
from sugar.activity import activity
import sys, os
import gtk


class HelloWorldActivity(activity.Activity):
    # hello is the function that writes 'Hello World' into the Sugar log.
    def hello(self, widget, data=None):
        logging.info('Hello World')
 
    def __init__(self, handle):
        activity.Activity.__init__(self, handle)
        # Creates a new button with the label "Hello World".
        self.button = gtk.Button("Hello World")
        # When the button receives the "clicked" signal, it will call the
        # function hello() passing it None as its argument. The hello()
        # function is defined above.
        self.button.connect("clicked", self.hello, None)
        # This packs the button into ourselves (a Sugar window).
        # self.add(self.button
        self.set_canvas(self.button)
        # The final step is to display this newly created widget.
        self.button.show()
        self.set_title('Hello World')