[gnome-games] retro: Add RetroSimpleGameUriAdapter

[Adrien Plazas <aplazas src gnome org>]

commit e15b879e101e13497fbdb86d28ac7c2a6debbc2c
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu May 25 14:02:12 2017 +0200

    retro: Add RetroSimpleGameUriAdapter
    
    This will be used to avoid code duplication in many plugins.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783111

 src/Makefile.am                              |    1 +
 src/retro/retro-simple-game-uri-adapter.vala |   26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 28c1f81..184efe1 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -100,6 +100,7 @@ gnome_games_SOURCES = \
        retro/retro-input-manager.vala \
        retro/retro-platform.vala \
        retro/retro-runner.vala \
+       retro/retro-simple-game-uri-adapter.vala \
        retro/retro-simple-type.vala \
        \
        tracker/mime-type-tracker-uri-query.vala \
diff --git a/src/retro/retro-simple-game-uri-adapter.vala b/src/retro/retro-simple-game-uri-adapter.vala
new file mode 100644
index 0000000..c5eb3ae
--- /dev/null
+++ b/src/retro/retro-simple-game-uri-adapter.vala
@@ -0,0 +1,26 @@
+// This file is part of GNOME Games. License: GPL-3.0+.
+
+private class Games.RetroSimpleGameUriAdapter : GameUriAdapter, Object {
+       private RetroSimpleType simple_type;
+
+       public RetroSimpleGameUriAdapter (RetroSimpleType simple_type) {
+               this.simple_type = simple_type;
+       }
+
+       public async Game game_for_uri (Uri uri) throws Error {
+               Idle.add (this.game_for_uri.callback);
+               yield;
+
+               var uid = new FingerprintUid (uri, simple_type.prefix);
+               var title = new FilenameTitle (uri);
+               var icon = new DummyIcon ();
+               var media = new GriloMedia (title, simple_type.mime_type);
+               var cover = new CompositeCover ({
+                       new LocalCover (uri),
+                       new GriloCover (media, uid)});
+               var core_source = new RetroCoreSource (simple_type.platform, { simple_type.mime_type });
+               var runner = new RetroRunner (core_source, uri, uid, title);
+
+               return new GenericGame (title, icon, cover, runner);
+       }
+}