On 05/13/2013 09:37 AM, Mark James wrote:
[Re-posting in plain text.]
On 13/05/13 07:27, gnome-list-request@xxxxxxxxx wrote:
Date: Sun, 12 May 2013 10:38:59 -0400
From: Summers Pittman<secondsun@xxxxxxxxx>
Has the Gnome team thought about working with Mozilla to allow Gnome
to display notifications from their SimplePush API?
http://jbalogh.me/2012/01/30/push-notifications/
https://wiki.mozilla.org/Services/Notifications/Push/API
This would allow websites to send (requested) alerts to Gnome
desktops, even if the alert recipient doesn't use Firefox, or isn't
currently running Firefox.
Or is there some other better way?
Mark
I'm not part of the Gnome team, but I think it might be a better idea to
create some a daemon which listens for simple push and then uses dbus to
communicate the notification.
Back of the napkin math looks thusly:
App is installed:
App sends a message to dbus telling the daemon to Register with a
PushServer
Daemon receives an Endpoint from the Push server and sends a message via
dbus
App receives an Endpoint from dbus and sends this to the App Server
Message is Received:
Daemon receives the message and extracts the UAID
Daemon sends the message on dbus
DBus routes the message to the app based on the UAIDof the message
App is uninstalled:
App sends a notification to dbus.
Dbus routes the message to the daemon
Daemon unregisters the app
App is garbage collected:
It would be reasonable for the SimplePush daemon to periodically review
which apps have consumed push messages and unregister applications which
haven't been used in a while.
You're right Summers, it would be better for there to be a SimplePush
daemon for various OSes, which under Linux would generate dbus
messages that Gnome can display.
By "App" do you mean a desktop application program?
Yes
Aren't alerts for these working already, such as the new-email alerts
sent by Thunderbird?
Yes.
The new thing here is to allow users to request alerts from websites
and have them delivered to the desktop even if the website is not
open, and even if a browser is not open.
And even if the application which requested to be subscribed to them
isn't open.
What we are really missing is a unified API for hosting message services
and sending messages to devices. Think Google Cloud Messaging for the
Desktop.
Given the existence of a SimplePush service such as the one run by
Mozilla, and a SimplePush daemon that listens for notifications from
the service and delivers notifications via dbus, all you need is to
give browsers the ability to register notifications with the service,
and give websites the ability to push notifications to the service.
Not just browsers but also desktop applications.
Only Firefox can currently do this, and I'm not sure they'd be willing
to run notification servers that can be used by non-Mozilla browsers
and desktops. Perhaps the solution is just to make available dbus
daemons for commercial alert offerings like AlertRocket and XendApp.
Or instead some open standard with servers hosted by some giant like
Google.
Date: Sun, 12 May 2013 22:16:45 +0530
From: Sindhu S<sindhus@xxxxxxx>
For example: I use irccloud.com to chat on IRC and it sends desktop
notifications. Previously when on OSX, my notifications sidebar would
show
me all the new messages and alerts from this website (running inside
Safari).
I think this would be a neat feature to have when combined with the
Messages tray in GNOME 3.
Perhaps, this should have come up as GSoC project idea?
Sindhu, it looks like the alerts built into Webkit-derived browsers
like Chrome and Safari -- which is a draft standard
(http://www.w3.org/TR/notifications) -- only gives these browsers the
ability to show alerts outside their windows, such as on the desktop
when the browser is minimised. The browser still needs to be running,
and unlike SimplePush there's no mechanisms defined for alerts to be
registered, or delivered when the webpage isn't open.
Mark
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