diff options
| -rw-r--r-- | ChangeLog | 15 | ||||
| -rw-r--r-- | python/dbus.py | 52 | ||||
| -rw-r--r-- | python/examples/Makefile.am | 2 | ||||
| -rw-r--r-- | python/examples/gconf-proxy-client.py | 11 | ||||
| -rw-r--r-- | python/examples/gconf-proxy-service.py | 48 |
5 files changed, 127 insertions, 1 deletions
@@ -1,6 +1,21 @@ 2004-05-29 Seth Nickell <seth@gnome.org> * python/dbus.py: + + Add ObjectTree class which allows implementation + of trees of "virtual" objects. Basically the python + wrapper for "register_fallback". + + * python/examples/Makefile.am + * python/examples/gconf-proxy-client.py: + * python/examples/gconf-proxy-service.py: + + Implement a simple GConf proxy service that supports + get/set on string and int GConf keys using the ObjectTree. + +2004-05-29 Seth Nickell <seth@gnome.org> + + * python/dbus.py: * python/examples/example-client.py: * python/examples/example-service.py: * python/examples/list-system-services.py: diff --git a/python/dbus.py b/python/dbus.py index 583c5548..2c405c73 100644 --- a/python/dbus.py +++ b/python/dbus.py @@ -240,7 +240,7 @@ class Object: def _unregister_cb(self, connection): print ("Unregister") - + def _message_cb(self, connection, message): target_method_name = message.get_member() target_method = self._method_name_to_method[target_method_name] @@ -272,6 +272,56 @@ class Object: method_dict[method.__name__] = method return method_dict +class ObjectTree: + """An object tree allows you to register a handler for a tree of object paths. + This means that literal Python objects do not need to be created for each object + over the bus, but you can have a virtual tree of objects handled by a single + Python object. + """ + + def __init__(self, base_path, service): + self._base_path = base_path + self._service = service + self._bus = service.get_bus() + self._connection = self._bus.get_connection() + + self._connection.register_fallback(base_path, self._unregister_cb, self._message_cb) + + def object_method_called(self, object_path, method_name, argument_list): + """Override this method. Called with, object_path, the relative path of the object + under the base_path, the name of the method invoked, and a list of arguments + """ + raise NotImplementedException, "object_method_called() must be overriden" + + def _unregister_cb(self, connection): + print ("Unregister") + + def _message_cb(self, connection, message): + target_object_full_path = message.get_path() + assert(self._base_path == target_object_full_path[:len(self._base_path)]) + target_object_path = target_object_full_path[len(self._base_path):] + + target_method_name = message.get_member() + args = message.get_args_list() + + try: + retval = self.object_method_called(target_object_path, target_method_name, args) + except Exception, e: + if e.__module__ == '__main__': + # FIXME: is it right to use .__name__ here? + error_name = e.__class__.__name__ + else: + error_name = e.__module__ + '.' + str(e.__class__.__name__) + error_contents = str(e) + reply = dbus_bindings.Error(message, error_name, error_contents) + else: + reply = dbus_bindings.MethodReturn(message) + if retval != None: + iter = reply.get_iter() + iter.append(retval) + + self._connection.send(reply) + class RemoteService: """A remote service providing objects. diff --git a/python/examples/Makefile.am b/python/examples/Makefile.am index 743c520e..8eab412e 100644 --- a/python/examples/Makefile.am +++ b/python/examples/Makefile.am @@ -4,6 +4,8 @@ EXTRA_DIST = \ example-service.py \ example-client.py \ example-signal.py \ + gconf-proxy-client.py \ + gconf-proxy-service.py \ list-system-services.py \ $(NULL) diff --git a/python/examples/gconf-proxy-client.py b/python/examples/gconf-proxy-client.py new file mode 100644 index 00000000..f9c63097 --- /dev/null +++ b/python/examples/gconf-proxy-client.py @@ -0,0 +1,11 @@ +import dbus + +gconf_key = "/desktop/gnome/file_views/icon_theme" + +bus = dbus.SessionBus() +gconf_service = bus.get_service("org.gnome.GConf") +gconf_key_object = gconf_service.get_object("/org/gnome/GConf" + gconf_key, "org.gnome.GConf") + +value = gconf_key_object.getString() + +print ("Value of GConf key %s is %s" % (gconf_key, value)) diff --git a/python/examples/gconf-proxy-service.py b/python/examples/gconf-proxy-service.py new file mode 100644 index 00000000..b5842e80 --- /dev/null +++ b/python/examples/gconf-proxy-service.py @@ -0,0 +1,48 @@ +import dbus + +import gtk +import gconf + +class GConfService(dbus.Service): + + def __init__(self): + dbus.Service.__init__(self, "org.gnome.GConf", dbus.SessionBus()) + + gconf_object_tree = self.GConfObjectTree(self) + + class GConfObjectTree(dbus.ObjectTree): + + def __init__(self, service): + dbus.ObjectTree.__init__(self, "/org/gnome/GConf", service) + + self.client = gconf.client_get_default() + + def object_method_called(self, object_path, method_name, argument_list): + print ("Method %s called on GConf key %s" % (method_name, object_path)) + + return_value = None + + if "getString" == method_name: + assert(len(argument_list) == 0) + return_value = self.client.get_string (object_path) + + elif "setString" == method_name: + assert(len(argument_list) == 1) + self.client.set_string(object_path, argument_list[0]) + + elif "getInt" == method_name: + assert(len(argument_list) == 0) + return_value = self.client.get_int(object_path) + + elif "setInt" == method_name: + assert(len(argument_list) == 1) + self.client.set_int(object_path, argument_list[0]) + + return return_value + +gconf_service = GConfService() + +print ("GConf Proxy service started.") +print ("Run 'gconf-proxy-client.py' to fetch a GConf key through the proxy...") + +gtk.main() |