[gnome-games] Add MediaSet property to Runner

[Adrien Plazas <aplazas src gnome org>]

commit 1c5a317b8a7efa572a4950a1fc52ade92d803717
Author: Ricard Gascons <gascons1995 gmail com>
Date:   Thu Aug 18 16:53:30 2016 +0200

    Add MediaSet property to Runner
    
    This commit adds the MediaSet property to the Runner interface to be
    used by subsequent commits.
    
    This is part of a series of commits to add multi-source support.

 src/command/command-runner.vala |    4 ++++
 src/core/runner.vala            |    1 +
 src/dummy/dummy-runner.vala     |    4 ++++
 src/retro/retro-runner.vala     |    5 +++++
 4 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/src/command/command-runner.vala b/src/command/command-runner.vala
index 1cd310a..a96ff14 100644
--- a/src/command/command-runner.vala
+++ b/src/command/command-runner.vala
@@ -13,6 +13,10 @@ public class Games.CommandRunner : Object, Runner {
                get { return false; }
        }
 
+       public MediaSet? media_set {
+               get { return null; }
+       }
+
        private string[] args;
        private bool watch_child;
 
diff --git a/src/core/runner.vala b/src/core/runner.vala
index 50f0e90..c9684ca 100644
--- a/src/core/runner.vala
+++ b/src/core/runner.vala
@@ -6,6 +6,7 @@ public interface Games.Runner : Object {
        public abstract bool can_fullscreen { get; }
        public abstract bool can_quit_safely { get; }
        public abstract bool can_resume { get; }
+       public abstract MediaSet? media_set { get; }
 
        public abstract void check_is_valid () throws Error;
        public abstract Gtk.Widget get_display ();
diff --git a/src/dummy/dummy-runner.vala b/src/dummy/dummy-runner.vala
index 89cc0d5..579e89d 100644
--- a/src/dummy/dummy-runner.vala
+++ b/src/dummy/dummy-runner.vala
@@ -13,6 +13,10 @@ private class Games.DummyRunner : Object, Runner {
                get { return false; }
        }
 
+       public MediaSet? media_set {
+               get { return null; }
+       }
+
        public void check_is_valid () throws Error {
        }
 
diff --git a/src/retro/retro-runner.vala b/src/retro/retro-runner.vala
index 3263001..26e4d5a 100644
--- a/src/retro/retro-runner.vala
+++ b/src/retro/retro-runner.vala
@@ -28,6 +28,11 @@ public class Games.RetroRunner : Object, Runner {
                }
        }
 
+       private MediaSet _media_set;
+       public MediaSet? media_set {
+               get { return _media_set; }
+       }
+
        private Retro.Core core;
        private RetroGtk.CairoDisplay video;
        private RetroGtk.PaPlayer audio;