From 2c4ff94ef0d664fa8355db2f7035d5bf0c102690 Mon Sep 17 00:00:00 2001
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Date: Fri, 15 Sep 2023 11:43:03 +0200
Subject: Introduce gsetting (array of strings): preferred-sessions.

The preferred-session gsetting shall provide an ordered list of preferred
sessions for detecing the default session type.
---
 data/org.ArcticaProject.arctica-greeter.gschema.xml |  4 ++++
 src/arctica-greeter.vala                            | 13 +++++--------
 src/settings.vala                                   |  1 +
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/data/org.ArcticaProject.arctica-greeter.gschema.xml b/data/org.ArcticaProject.arctica-greeter.gschema.xml
index 52633c5..ddef373 100644
--- a/data/org.ArcticaProject.arctica-greeter.gschema.xml
+++ b/data/org.ArcticaProject.arctica-greeter.gschema.xml
@@ -211,6 +211,10 @@
       <default>false</default>
       <summary>Whether to hide Wayland sessions.</summary>
     </key>
+    <key name="preferred-sessions" type="as">
+      <default>[]</default>
+      <summary>Ordered list of preferred desktop sessions (for detecting the default session type).</summary>
+    </key>
     <key name="shutdown-dialog-timeout" type="i">
       <default>60</default>
       <summary>Time in seconds until the shutdown dialog forcefully selects the default action. Set to 0 to disable.</summary>
diff --git a/src/arctica-greeter.vala b/src/arctica-greeter.vala
index 2ede4c5..cacfdac 100644
--- a/src/arctica-greeter.vala
+++ b/src/arctica-greeter.vala
@@ -248,14 +248,11 @@ public class ArcticaGreeter : Object
         var sessions = new List<string> ();
         sessions.append ("lightdm-xsession");
 
-        // FIXME: this list should be obtained from AGSettings, ideally...
-        sessions.append ("mate");
-        sessions.append ("xfce");
-        sessions.append ("kde-plasma");
-        sessions.append ("kde");
-        sessions.append ("gnome");
-        sessions.append ("cinnamon");
-        sessions.append ("lomiri");
+        var preferred_sessions = AGSettings.get_strv (AGSettings.KEY_PREFERRED_SESSIONS);
+
+        foreach (var preferred_session in preferred_sessions) {
+            sessions.append (preferred_session);
+        }
 
         if (!AGSettings.get_boolean (AGSettings.KEY_HIDE_WAYLAND_SESSIONS)) {
             foreach (string session in sessions) {
diff --git a/src/settings.vala b/src/settings.vala
index 16b5a82..acef828 100644
--- a/src/settings.vala
+++ b/src/settings.vala
@@ -74,6 +74,7 @@ public class AGSettings : Object
     public const string KEY_HIDE_X11_SESSIONS = "hide-x11-sessions";
     public const string KEY_HIDE_WAYLAND_SESSIONS = "hide-wayland-sessions";
     public const string KEY_SHUTDOWN_DIALOG_TIMEOUT = "shutdown-dialog-timeout";
+    public const string KEY_PREFERRED_SESSIONS = "preferred-sessions";
 
     public static bool get_boolean (string key)
     {
-- 
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