workspace: Use the schema for the current mode to get 'button-layout'

https://bugzilla.gnome.org/show_bug.cgi?id=689234

data/Makefile.am

@@ -54,7 +54,9 @@ keys_in_files =					\
 	$(NULL)
 keys_DATA = $(keys_in_files:.xml.in=.xml)
 
-gsettings_SCHEMAS = org.gnome.shell.gschema.xml
+gsettings_SCHEMAS =				\
+	org.gnome.shell.gschema.xml		\
+	org.gnome.shell-foo.gschema.xml
 
 @INTLTOOL_XML_NOMERGE_RULE@
 
@@ -81,7 +83,8 @@ EXTRA_DIST =						\
 	$(menu_DATA)					\
 	$(convert_DATA)					\
 	$(keys_in_files)				\
-	org.gnome.shell.gschema.xml.in.in
+	org.gnome.shell.gschema.xml.in.in		\
+	org.gnome.shell-foo.gschema.xml.in.in
 
 CLEANFILES =						\
 	gnome-shell.desktop.in				\
@@ -91,4 +94,6 @@ CLEANFILES =						\
 	$(gsettings_SCHEMAS)				\
 	gschemas.compiled				\
 	org.gnome.shell.gschema.valid			\
-	org.gnome.shell.gschema.xml.in
+	org.gnome.shell.gschema.xml.in			\
+	org.gnome.shell-foo.gschema.valid		\
+	org.gnome.shell-foo.gschema.xml.in

data/org.gnome.shell-foo.gschema.xml.in.in

@@ -0,0 +1,13 @@
+<schemalist>
+  <schema id="org.gnome.shell-foo.overrides" path="/org/gnome/shell-foo/overrides/"
+	  gettext-domain="@GETTEXT_PACKAGE@">
+    <key name="button-layout" type="s">
+      <default>":minimize,close"</default>
+      <_summary>Arrangement of buttons on the titlebar</_summary>
+      <_description>
+        This key overrides the key in org.gnome.desktop.wm.preferences when
+        running GNOME Shell in Foo mode.
+      </_description>
+    </key>
+  </schema>
+</schemalist>

js/ui/main.js

@@ -109,6 +109,8 @@ function start() {
     Gio.DesktopAppInfo.set_desktop_env('GNOME');
 
     sessionMode = new SessionMode.SessionMode();
+    Meta.prefs_override_preference_schema(sessionMode.buttonLayout[0], sessionMode.buttonLayout[1]);
+
     shellDBusService = new ShellDBus.GnomeShell();
     shellMountOpDBusService = new ShellMountOperation.GnomeShellMountOpHandler();
 

js/ui/sessionMode.js

@@ -21,6 +21,7 @@ const _modes = {
         isLocked: false,
         isGreeter: false,
         isPrimary: false,
+        buttonLayout: ['button-layout', 'org.gnome.shell.overrides'],
         unlockDialog: null,
         components: [],
         panel: {
@@ -101,6 +102,29 @@ const _modes = {
             right: ['a11y', 'keyboard', 'volume', 'bluetooth',
                     'network', 'battery', 'userMenu']
         }
+    },
+
+    'foo': {
+        hasOverview: true,
+        showCalendarEvents: true,
+        allowSettings: true,
+        allowExtensions: true,
+        hasRunDialog: true,
+        hasWorkspaces: true,
+        hasWindows: true,
+        hasNotifications: true,
+        isLocked: false,
+        isPrimary: true,
+        buttonLayout: ['button-layout', 'org.gnome.shell-foo.overrides'],
+        unlockDialog: imports.ui.unlockDialog.UnlockDialog,
+        components: ['networkAgent', 'polkitAgent', 'telepathyClient',
+                     'keyring', 'recorder', 'autorunManager', 'automountManager'],
+        panel: {
+            left: ['activities', 'appMenu'],
+            center: ['dateMenu'],
+            right: ['a11y', 'keyboard', 'volume', 'bluetooth',
+                    'network', 'battery', 'userMenu']
+        }
     }
 };
 

js/ui/workspace.js

@@ -30,9 +30,6 @@ const CLOSE_BUTTON_FADE_TIME = 0.1;
 
 const DRAGGING_WINDOW_OPACITY = 100;
 
-const BUTTON_LAYOUT_SCHEMA = 'org.gnome.shell.overrides';
-const BUTTON_LAYOUT_KEY = 'button-layout';
-
 // When calculating a layout, we calculate the scale of windows and the percent
 // of the available area the new layout uses. If the values for the new layout,
 // when weighted with the values as below, are worse than the previous layout's,
@@ -554,8 +551,8 @@ const WindowOverlay = new Lang.Class({
         let button = this.closeButton;
         let title = this.title;
 
-        let settings = new Gio.Settings({ schema: BUTTON_LAYOUT_SCHEMA });
+        let settings = new Gio.Settings({ schema: Main.sessionMode.buttonLayout[1] });
-        let layout = settings.get_string(BUTTON_LAYOUT_KEY);
+        let layout = settings.get_string(Main.sessionMode.buttonLayout[0]);
         let rtl = Clutter.get_default_text_direction() == Clutter.TextDirection.RTL;
 
         let split = layout.split(":");

src/main.c

@@ -174,8 +174,6 @@ shell_prefs_init (void)
                                          OVERRIDES_SCHEMA);
   meta_prefs_override_preference_schema ("workspaces-only-on-primary",
                                          OVERRIDES_SCHEMA);
-  meta_prefs_override_preference_schema ("button-layout",
-                                         OVERRIDES_SCHEMA);
   meta_prefs_override_preference_schema ("edge-tiling",
                                          OVERRIDES_SCHEMA);
   meta_prefs_override_preference_schema ("focus-change-on-pointer-rest",