Cell Renderer

#!/usr/bin/env python
# vim: ts=4:sw=4:tw=78:nowrap
# [SNIPPET_NAME: Cell Renderer]
# [SNIPPET_DESCRIPTION: Demonstration using editable and activatable CellRenderers]
# [SNIPPET_DOCS: http://www.pygtk.org/pygtk2tutorial/sec-CellRenderers.html, http://www.pygtk.org/docs/pygtk/class-gtkcellrenderer.html]

""" Demonstration using editable and activatable CellRenderers """
import pygtk
import gtk, gobject

tasks =  {
    "Buy groceries": "Go to Asda after work",
    "Do some programming": "Remember to update your software",
    "Power up systems": "Turn on the client but leave the server",
    "Watch some tv": "Remember to catch ER"

class GUI_Controller:
    """ The GUI class is the controller for our application """
    def __init__(self):
        # setup the main window
        self.root = gtk.Window(type=gtk.WINDOW_TOPLEVEL)
        self.root.set_title("CellRenderer Example")
        self.root.connect("destroy", self.destroy_cb)
        # Get the model and attach it to the view
        self.mdl = Store.get_model()
        self.view = Display.make_view( self.mdl )
        # Add our view into the main window
    def destroy_cb(self, *kw):
        """ Destroy callback to shutdown the app """
    def run(self):
        """ run is called to set off the GTK mainloop """

class InfoModel:
    """ The model class holds the information we want to display """
    def __init__(self):
        """ Sets up and populates our gtk.TreeStore """
        self.tree_store = gtk.TreeStore( gobject.TYPE_STRING,
                                         gobject.TYPE_BOOLEAN )
        # places the global people data into the list
        # we form a simple tree.
        for item in tasks.keys():
            parent = self.tree_store.append( None, (item, None) )
            self.tree_store.append( parent, (tasks[item],None) )
    def get_model(self):
        """ Returns the model """
        if self.tree_store:
            return self.tree_store 
            return None

class DisplayModel:
    """ Displays the Info_Model model in a view """
    def make_view( self, model ):
        """ Form a view for the Tree Model """
        self.view = gtk.TreeView( model )
        # setup the text cell renderer and allows these
        # cells to be edited.
        self.renderer = gtk.CellRendererText()
        self.renderer.set_property( 'editable', True )
        self.renderer.connect( 'edited', self.col0_edited_cb, model )

        # The toggle cellrenderer is setup and we allow it to be
        # changed (toggled) by the user.
        self.renderer1 = gtk.CellRendererToggle()
        self.renderer1.set_property('activatable', True)
        self.renderer1.connect( 'toggled', self.col1_toggled_cb, model )

        # Connect column0 of the display with column 0 in our list model
        # The renderer will then display whatever is in column 0 of
        # our model .
        self.column0 = gtk.TreeViewColumn("Name", self.renderer, text=0)

        # The columns active state is attached to the second column
        # in the model.  So when the model says True then the button
        # will show as active e.g on.
        self.column1 = gtk.TreeViewColumn("Complete", self.renderer1 )
        self.column1.add_attribute( self.renderer1, "active", 1)
        self.view.append_column( self.column0 )
        self.view.append_column( self.column1 )
        return self.view
    def col0_edited_cb( self, cell, path, new_text, model ):
        Called when a text cell is edited.  It puts the new text
        in the model so that it is displayed properly.
        print "Change '%s' to '%s'" % (model[path][0], new_text)
        model[path][0] = new_text
    def col1_toggled_cb( self, cell, path, model ):
        Sets the toggled state on the toggle button to true or false.
        model[path][1] = not model[path][1]
        print "Toggle '%s' to: %s" % (model[path][0], model[path][1],)

if __name__ == '__main__':
    Store = InfoModel()
    Display = DisplayModel()
    myGUI = GUI_Controller()