Extensions: Experimental AppIndicator support

The way how we access the gPodder "GUI" object is
very hack-ish. We should find a better way for that.

share/gpodder/extensions/ubuntu_appindicator.py

@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+
+# Ubuntu AppIndicator Icon
+# Thomas Perl <thp@gpodder.org>; 2012-02-24
+
+import gpodder
+
+_ = gpodder.gettext
+
+__title__ = _('Ubuntu App Indicator')
+__description__ = _('Show a status indicator in the top bar.')
+__only_for__ = 'gtk'
+
+import appindicator
+import gtk
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+class gPodderExtension:
+    def __init__(self, container):
+        self.container = container
+        self.indicator = None
+        self.gpodder = None
+
+    def on_load(self):
+        self.indicator = appindicator.Indicator('gpodder', 'gpodder',
+                appindicator.CATEGORY_APPLICATION_STATUS)
+        self.indicator.set_status(appindicator.STATUS_ACTIVE)
+
+    def _rebuild_menu(self):
+        menu = gtk.Menu()
+        toggle_visible = gtk.CheckMenuItem(_('Show main window'))
+        toggle_visible.set_active(True)
+        def on_toggle_visible(menu_item):
+            if menu_item.get_active():
+                self.gpodder.main_window.show()
+            else:
+                self.gpodder.main_window.hide()
+        toggle_visible.connect('activate', on_toggle_visible)
+        menu.append(toggle_visible)
+        menu.append(gtk.SeparatorMenuItem())
+        quit_gpodder = gtk.MenuItem(_('Quit'))
+        def on_quit(menu_item):
+            self.gpodder.on_gPodder_delete_event(self.gpodder.main_window)
+        quit_gpodder.connect('activate', on_quit)
+        menu.append(quit_gpodder)
+        menu.show_all()
+        self.indicator.set_menu(menu)
+
+    def on_unload(self):
+        self.indicator = None
+
+    def on_ui_object_available(self, name, ui_object):
+        if name == 'gpodder-gtk':
+            self.gpodder = ui_object
+            self._rebuild_menu()
+

src/gpodder/extensions.py

@@ -398,3 +398,15 @@ class ExtensionManager(object):
         """
         pass
 
+    @call_extensions
+    def on_ui_object_available(self, name, ui_object):
+        """Called when an UI-specific object becomes available
+
+        XXX: Experimental. This hook might go away without notice (and be
+        replaced with something better). Only use for in-tree extensions.
+
+        @param name: The name/ID of the object
+        @param ui_object: The object itself
+        """
+        pass
+

src/gpodder/gtkui/main.py

@@ -107,6 +107,7 @@ class gPodder(BuilderWidget, dbus.service.Object):
         BuilderWidget.__init__(self, None)
     
     def new(self):
+        gpodder.user_extensions.on_ui_object_available('gpodder-gtk', self)
         self.toolbar.set_property('visible', self.config.show_toolbar)
 
         self.bluetooth_available = util.bluetooth_available()