#!/usr/bin/env python
#
# Use Own Fonts extension: Let users easily enable/disable the usage of
# their own fonts instead of the fonts from the web pages.
#
# Copyright (C) 2006 Wouter Bolsterlee
# Copyright (C) 2006 Reinout van Schouwen
# Copyright (C) 2005 Adam Hooper
#

import gtk
import gconf


# The UI string that defines the place in the menu
_ui_str = """
<ui>
 <menubar name="menubar">
  <menu name="ViewMenu" action="View">
   <separator/>
   <menuitem name="UseOwnFonts"
         action="UseOwnFonts"/>
   <separator/>
  </menu>
 </menubar>
</ui>
"""

# Some settings
gconf_key_name = '/apps/epiphany/web/use_own_fonts'
action_path = '/menubar/ViewMenu/UseOwnFonts'


# All methods below are callbacks

def _fonts_cb(action, window):
    """Callback which is called when the menu item is pressed"""

    # get the action and it's current status
    action = window.get_ui_manager().get_action(action_path)
    new_setting = action.get_active()

    # toggle the gconf key
    gconf_client = gconf.client_get_default()
    gconf_client.set_bool(gconf_key_name, new_setting)

    # update the checkbox
    action = window.get_ui_manager().get_action(action_path)
    action.set_active(new_setting)

# The methods below are needed to implement the EphyExtension interface.

def attach_window(window):
    """Adds the item to the menu"""

    # Define the menu entry.
    # to the menu
    actions = [
        ('UseOwnFonts', None, 'Always use _own fonts', None, None,
                _fonts_cb, 0)
        ]


    # create an action and add it to the menu
    ui_manager = window.get_ui_manager()
    group = gtk.ActionGroup('UseOwnFonts')
    group.add_toggle_actions(actions, window)
    ui_manager.insert_action_group(group, -1)
    ui_id = ui_manager.add_ui_from_string(_ui_str)

    # initial setting
    action = window.get_ui_manager().get_action(action_path)
    gconf_client = gconf.client_get_default()
    initial_setting = gconf_client.get_bool(gconf_key_name)
    action.set_active(initial_setting)

    # store the group and ui_id, because we want to remove them later on
    window._use_own_fonts_window_data = (group, ui_id)


def detach_window(window):
    """Removes the item from the menu"""
    
    # clean up
    group, ui_id = window._use_own_fonts_window_data
    del window._use_own_fonts_window_data

    ui_manager = window.get_ui_manager()
    ui_manager.remove_ui(ui_id)
    ui_manager.remove_action_group(group)
    ui_manager.ensure_update()