I'm wondering what's the proper way to show my window after clicking on a notification?
This is what I've tried:
def callback(*_):
mainWindow.show()
mainWindow.raise_()
mainWindow.activateWindow()
notification.addAction('default', '', callback) #notification sent using dbus
notification.show()
But it has a undesired behaviour: when clicking on the notification, the notification center (I'm on Gnome) stays open on top of my window.
Reproducible example:
import sys
from PyQt6.QtWidgets import QApplication, QWidget, QPushButton
from PyQt6.QtGui import QIcon
from PyQt6.QtCore import pyqtSlot
import dbus
from collections import OrderedDict
# Copyright (c) 2018 Kurt Jacobson
# <kurtcjacobson@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
DBusGMainLoop = None
try:
from dbus.mainloop.glib import DBusGMainLoop
except:
print ("Could not import DBusGMainLoop, is package 'python-dbus.mainloop.glib' installed?")
APP_NAME = 'test'
DBUS_IFACE = None
NOTIFICATIONS = {}
class Urgency:
"""freedesktop.org notification urgency levels"""
LOW, NORMAL, CRITICAL = range(3)
class UninitializedError(RuntimeError):
"""Error raised if you try to show an error before initializing"""
pass
def init():
"""Initializes the DBus connection"""
global DBUS_IFACE
name = "org.freedesktop.Notifications"
path = "/org/freedesktop/Notifications"
interface = "org.freedesktop.Notifications"
mainloop = None
if DBusGMainLoop is not None:
mainloop = DBusGMainLoop(set_as_default=True)
bus = dbus.SessionBus(mainloop)
proxy = bus.get_object(name, path)
DBUS_IFACE = dbus.Interface(proxy, interface)
if mainloop is not None:
# We have a mainloop, so connect callbacks
DBUS_IFACE.connect_to_signal('ActionInvoked', _onActionInvoked)
DBUS_IFACE.connect_to_signal('NotificationClosed', _onNotificationClosed)
def _onActionInvoked(nid, action):
"""Called when a notification action is clicked"""
nid, action = int(nid), str(action)
try:
notification = NOTIFICATIONS[nid]
except KeyError:
# must have been created by some other program
return
notification._onActionInvoked(action)
def _onNotificationClosed(nid, reason):
"""Called when the notification is closed"""
nid, reason = int(nid), int(reason)
try:
notification = NOTIFICATIONS[nid]
except KeyError:
# must have been created by some other program
return
notification._onNotificationClosed(notification)
del NOTIFICATIONS[nid]
class Notification(object):
"""Notification object"""
id = 0
timeout = -1
_onNotificationClosed = lambda *args: None
def __init__(self, title, body='', icon='', timeout=-1):
"""Initializes a new notification object.
Args:
title (str): The title of the notification
body (str, optional): The body text of the notification
icon (str, optional): The icon to display with the notification
timeout (TYPE, optional): The time in ms before the notification hides, -1 for default, 0 for never
"""
self.title = title # title of the notification
self.body = body # the body text of the notification
self.icon = icon # the path to the icon to use
self.timeout = timeout # time in ms before the notification disappears
self.hints = {} # dict of various display hints
self.actions = OrderedDict() # actions names and their callbacks
self.data = {} # arbitrary user data
def show(self):
if DBUS_IFACE is None:
raise UninitializedError("You must call 'notify.init()' before 'notify.show()'")
"""Asks the notification server to show the notification"""
nid = DBUS_IFACE.Notify(APP_NAME,
self.id,
self.icon,
self.title,
self.body,
self._makeActionsList(),
self.hints,
self.timeout,
)
self.id = int(nid)
NOTIFICATIONS[self.id] = self
return True
def close(self):
"""Ask the notification server to close the notification"""
if self.id != 0:
DBUS_IFACE.CloseNotification(self.id)
def onClosed(self, callback):
"""Set the callback called when the notification is closed"""
self._onNotificationClosed = callback
def addAction(self, action, label, callback, user_data=None):
"""Add an action to the notification.
Args:
action (str): A sort key identifying the action
label (str): The text to display on the action button
callback (bound method): The method to call when the action is activated
user_data (any, optional): Any user data to be passed to the action callback
"""
self.actions[action] = (label, callback, user_data)
def _makeActionsList(self):
"""Make the actions array to send over DBus"""
arr = []
for action, (label, callback, user_data) in self.actions.items():
arr.append(action)
arr.append(label)
return arr
def _onActionInvoked(self, action):
"""Called when the user activates a notification action"""
try:
label, callback, user_data = self.actions[action]
except KeyError:
return
if user_data is None:
callback(self, action)
else:
callback(self, action, user_data)
def window():
app = QApplication(sys.argv)
widget = QWidget()
button = QPushButton("Notify", widget)
button.move(110,85)
def button_callback():
notification = Notification("Test")
def notification_callback(*_):
widget.show()
widget.raise_()
widget.activateWindow()
notification.close()
notification.addAction("default", "", notification_callback)
notification.show()
button.clicked.connect(button_callback)
widget.setGeometry(50,50,320,200)
widget.setWindowTitle("My Window")
widget.show()
init()
sys.exit(app.exec())
if __name__ == '__main__':
window()
Basically when I click the notification, my callback function runs, the notification is dismissed, but the notifications list remains open. Probably I'm not requesting focus correctly...