[gnome-games] steam: Add SteamTitle

[Adrien Plazas <aplazas src gnome org>]

commit d7a101a72d6bffaca49e8533ff2c0dbc48982af2
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu May 12 18:36:39 2016 +0200

    steam: Add SteamTitle
    
    This will be used in the next commit to provide Steam game titles to
    GenericGame and hence to allow to replace SteamGame by GenericGame.

 plugins/steam/src/Makefile.am      |    1 +
 plugins/steam/src/steam-title.vala |   21 +++++++++++++++++++++
 2 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/plugins/steam/src/Makefile.am b/plugins/steam/src/Makefile.am
index 3a79455..104913b 100644
--- a/plugins/steam/src/Makefile.am
+++ b/plugins/steam/src/Makefile.am
@@ -11,6 +11,7 @@ libgames_steam_plugin_la_SOURCES = \
        steam-icon.vala \
        steam-plugin.vala \
        steam-registry.vala \
+       steam-title.vala \
        $(NULL)
 
 libgames_steam_plugin_la_VALAFLAGS = \
diff --git a/plugins/steam/src/steam-title.vala b/plugins/steam/src/steam-title.vala
new file mode 100644
index 0000000..5a5c3f8
--- /dev/null
+++ b/plugins/steam/src/steam-title.vala
@@ -0,0 +1,21 @@
+// This file is part of GNOME Games. License: GPLv3
+
+private class Games.SteamTitle : Object, Title {
+       private SteamRegistry registry;
+       private string name;
+
+       public SteamTitle (SteamRegistry registry) {
+               this.registry = registry;
+       }
+
+       public string get_title () throws Error {
+               if (name != null)
+                       return name;
+
+               name = registry.get_data ({"AppState", "name"});
+               if (name == null)
+                       throw new SteamGameError.NO_NAME (@"Couldn't get name from Steam registry.");
+
+               return name;
+       }
+}