Re: Re : Desktop Display of Website Alerts

[Summers Pittman <secondsun gmail com>]

On 05/13/2013 09:37 AM, Mark James wrote:
> [Re-posting in plain text.]
>
> On 13/05/13 07:27, gnome-list-request gnome org wrote:
> > Date: Sun, 12 May 2013 10:38:59 -0400
> > From: Summers Pittman<secondsun gmail com>
> > > 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 live in>
> >
> > 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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