4.5 - Activities

[Aaron J. Seigo]

On March 9, 2010, Chani wrote:
> visible activity? or should we decide that the activity is completely
> global, and then figure out how to gracefully handle changes in the number
> of monitors?

there are two different topics here: 

* coordinating Context<->Containment

* coordinating when a Containment is shown on a particular screen

we already have code that manages the second point. the only thing it doesn't 
do currently is unload/reload containments automatically that are associated 
with a screen that goes away. but all the rest is done: creating containments 
as needed when screens appear, showing the right containment on the right 
screen, etc. what could be made better here is copying some settings like the 
wallpaper as todd points out, but i wouldn't worry about this part of the code 
when talking about Context.

screen management is view and shell stuff.

Context management is scene stuff, will probably touch Corona and/or 
Containment and will be universal to plasma applications.

what will be needed is the ability to associate one or more Containments with 
a Context (already there), set a Context as the "current one" and get the set 
of Containments associated with that Context.

the screen management will then go through the shell and its views as it 
already does, e.g. when a screen is connected or the Context is switched up 
plasma-destop will check to make sure that there are containments for all the 
screens.

-- 
Aaron J. Seigo
humru othro a kohnu se
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