How Export Methods With Dbus In A Extended Class In Python, Inherited Methods?
Solution 1:
After some experimentation, I realize something essential, that I don't find before in documentation: The path for exported methods don't need to have the same path of exported object! Clarifing: If the method is not reimplemented in the child class (WindowOne
), I don't need to export it in the child class using @dbus.service.method('com.example.MyInterface.WindowOne')
, for example, I just need to export the method in the main class (Window
) using: @dbus.service.method('com.example.MyInterface.Window')
So I just need to use a fixed path when export the method of the top class Window
, see in the fixed code below.
# interface importsfrom gi.repository import Gtk
# dbus imports import dbus
import dbus.service
from dbus.mainloop.glib import DBusGMainLoop
# Main window classclassWindow(dbus.service.Object):
def__init__(self, gladeFilePath, name):
# ... inicialization
self.name = name
self.busName = dbus.service.BusName('com.example.MyInterface.', bus=dbus.SessionBus())
dbus.service.Object.__init__(self, self.busName, '/com/example/MyInterface/' + self.name)
@dbus.service.method('com.example.MyInterface.Window')defshow(self):
self.window.show_all()
@dbus.service.method('com.example.MyInterface.Window')defdestroy(self):
Gtk.main_quit()
@dbus.service.method('com.example.MyInterface.Window')defupdate(self, data):
# top class 'update' method# Child window classclassWindowOne(Window):
def__init__(self, gladeFilePath):
Window.__init__(self, gladeFilePath, "WindowOne")
@dbus.service.method('com.example.MyInterface.WindowOne')defupdate(self, data):
# reimplementation of top class 'update' methodif __name__ == "__main__":
DBusGMainLoop(set_as_default=True)
gladeFilePath = "/etc/interface.glade"
windowOne = WindowOne(gladeFilePath)
Gtk.main()
In the code for call the bus method, I just use like below:
bus = dbus.SessionBus()
dbusWindowOne = bus.get_object('com.example.MyInterface', '/com/example/MyInterface/WindowOne')
showWindowOne = dbusWindowOne.get_dbus_method('show', 'com.example.MyInterface.Window')
updateWindowOne = dbusWindowOne.get_dbus_method('update', 'com.example.MyInterface.WindowOne')
The method show
is called in the top class Window
, but is executed in the object WindowOne
that is a child class.
And the method update
is called in the child class WindowOne
, because it is reimplementing the top class method.
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