View source for InteractionSystem

== Goal ==

Reference : https://trac.videolan.org/vlc/ticket/27

The goal is to implement a system to:

* Alert the user of critical errors (cannot play file). Should be blocking.
* Ask the user a question
** Are you sure?
** Try to Fix index of avi?
** Overwrite File ? 
* Inform the user, without disturbing him. (Buffering stream). This might require a displaytime or something. Because how do we know how long this information should be displayed? Also think of buffering 0-100%
* present a user/passwd dialog when we get an authentication failure on a stream. 

== Roadmap ==

Scheduled for implementation in 0.8.5

Some work will have to be done in all interfaces

== Objects architecture ==

* Interaction object
** void * pointer for interface specific stuff

* Widget object
** for input, associated with a vlc_value_t

* Interaction manager
** Maintains a list of currently active interaction displays
** When a new interaction is requested, forward the request to the interface (ASYNCHRONOUS !)
** Asks the interface to show/modify/remove a display
** Active polling ?

* Signalling the interface : 
** function pointer
*** easier to know if interface does not support
** variable
*** cleaner ? 
** "control" function

* Requester 
** Builds the interaction object
** Add it to the interaction manager request queue. 
*** Queue or single with lock ?  
*** Analyze deadlock possibility

[[Category:Activities]]