Select classic session when using a11y features

data/greeter.metainfo.xml.in

@@ -52,6 +52,7 @@
         <issue url="https://github.com/elementary/greeter/issues/689">Does not follow the "automatic" accent color (based on wallpaper)</issue>
         <issue url="https://github.com/elementary/greeter/issues/699">Num lock/Caps lock labels are not centered</issue>
         <issue url="https://github.com/elementary/greeter/issues/790">add support for mutter 48 / libmutter-16</issue>
+        <issue url="https://github.com/elementary/greeter/issues/818">Automatically switch the session to X11 if a11y tools are used</issue>
       </issues>
     </release>
 

data/io.elementary.greeter.desktop.in

@@ -1,5 +1,7 @@
 [Desktop Entry]
 Name=Pantheon Greeter
 Comment=Pantheon Greeter
+Icon=io.elementary.greeter.settings
 Exec=@PROJECT_NAME@-compositor
 Type=Application
+NoDisplay=true

data/meson.build

@@ -40,3 +40,20 @@ test (
     find_program('desktop-file-validate'),
     args: join_paths(meson.current_build_dir (), meson.project_name() + '.desktop')
 )
+
+# For notifications
+install_data(
+    desktop_in,
+    install_dir: get_option('datadir') / 'applications',
+)
+
+install_data(
+    'icons' / '48.svg',
+    install_dir: get_option('datadir') / 'icons' / 'hicolor' / '48x48' / 'apps',
+    rename: meson.project_name() + '.settings.svg'
+)
+install_data(
+    'icons' / '48.svg',
+    install_dir: get_option('datadir') / 'icons' / 'hicolor' / '48x48@2' / 'apps',
+    rename: meson.project_name() + '.settings.svg'
+)

meson.build

@@ -54,4 +54,7 @@ if vapigen.found()
 	subdir('vapi')
 endif
 
-gnome.post_install(glib_compile_schemas: true)
+gnome.post_install(
+    glib_compile_schemas: true,
+    gtk_update_icon_cache: true
+)

src/Application.vala

@@ -102,6 +102,29 @@ public class Greeter.Application : Gtk.Application {
         });
 
         add_action (select_session_action);
+
+        var a11y_settings = new GLib.Settings ("org.gnome.desktop.a11y.applications");
+        a11y_settings.changed.connect ((key) => {
+            if (key != "screen-keyboard-enabled" && key != "screen-reader-enabled") {
+                return;
+            }
+
+            if (!a11y_settings.get_boolean (key)) {
+                return;
+            }
+
+            if (select_session_action.get_state ().get_string () != "pantheon-wayland") {
+                return;
+            }
+
+            select_session_action.set_state (new Variant.string ("pantheon"));
+
+            var notification = new Notification (_("Classic session automatically selected"));
+            notification.set_body (_("Accessibility features may be unavailable in the Secure session"));
+            notification.set_icon (new ThemedIcon ("preferences-desktop-accessibility"));
+
+            send_notification ("session-type", notification);
+        });
     }
 
     public override void activate () {