On Sun, Aug 13, 2017 at 01:20:14PM +0200, Joël Krähemann wrote: > The AgsApplicationContext acts as a base entry point to your > application. It is an extensible singleton > where functions are added by interfaces. > > In order to use libags-thread.so.0 you have to implement > AgsConcurrencyProvider provider in your application context. > > Likewise for libags-audio.so.0 you have to implement > AgsConcurrencyProvider provider and AgsSoundProvider because > it depends on thread routines. > > Both library use the very same base class but you can use > libags-thread.so.0 without ever knowing about audio. Here are > some implementations: > > * AgsXorgApplicationContext > * AgsAudioApplicationContext > * AgsServerApplicationContext > > The advantage of having a application context is you can provide your > very own extensions and you just have to derivate > AgsApplicationContext and implement wished interfaces. > > There is another interface in development AgsServiceProvider if you do > J2EE you might have seen such as using > Spring. > > AgsRecallFactory is an advanced factory pattern as you put in a string > you get a list of objects back. It does instantiate > AgsRecall sub-types you can view it as a kind of effect processor. > > Managers are singletons, too. They usually keep track of objects. In > general you can add, remove and lookup objects of it. > It is really common to use hashmaps in its implementation.
Now I better understand, thanks for the explanations. -- Sébastien > On Sun, Aug 13, 2017 at 12:33 PM, Sébastien Wilmet <swil...@gnome.org> wrote: > > On Thu, Aug 10, 2017 at 02:39:12PM +0200, Joël Krähemann wrote: > >> I use some patterns like: > >> > >> http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/audio/ags_recall_factory.h > >> http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/plugin/ags_lv2_manager.h > >> ... > >> > >> Or having an application context: > >> > >> http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/X/ags_xorg_application_context.h > >> http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/thread/ags_concurrency_provider.h > >> http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/audio/ags_sound_provider.h > > > > Can you describe a little those patterns? What are the intents? _______________________________________________ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
