Add user-theme extension

https://bugzilla.gnome.org/show_bug.cgi?id=644271

configure.ac

@@ -21,7 +21,7 @@ GLIB_GSETTINGS
 ADDITIONAL_PACKAGES=
 
 dnl keep this in sync with extensions/Makefile.am
-ALL_EXTENSIONS="example alternate-tab xrandr-indicator windowsNavigator auto-move-windows dock"
+ALL_EXTENSIONS="example alternate-tab xrandr-indicator windowsNavigator auto-move-windows dock user-theme"
 AC_ARG_ENABLE([extensions],
 	[AS_HELP_STRING([--enable-extensions],[Space separated list of extensions to enable. Default is that all extensions are built.])],
 	[],
@@ -34,7 +34,7 @@ for e in $enable_extensions; do
 			ENABLED_EXTENSIONS="$ENABLED_EXTENSIONS $e"
 			ADDITIONAL_PACKAGES="gnome-desktop-3.0 >= 2.91.6"
 			;;
-		alternate-tab|example|windowsNavigator|auto-move-windows|dock)
+		alternate-tab|example|windowsNavigator|auto-move-windows|dock|user-theme)
 			ENABLED_EXTENSIONS="$ENABLED_EXTENSIONS $e"
 			;;
 		*)
@@ -59,6 +59,7 @@ AC_CONFIG_FILES([
   extensions/example/Makefile
   extensions/windowsNavigator/Makefile
   extensions/xrandr-indicator/Makefile
+  extensions/user-theme/Makefile
   extensions/Makefile
   Makefile
   po/Makefile.in

extensions/Makefile.am

@@ -1,3 +1,3 @@
-DIST_SUBDIRS = example alternate-tab xrandr-indicator windowsNavigator auto-move-windows dock
+DIST_SUBDIRS = example alternate-tab xrandr-indicator windowsNavigator auto-move-windows dock user-theme
 
 SUBDIRS = $(ENABLED_EXTENSIONS)

extensions/user-theme/Makefile.am

@@ -0,0 +1,14 @@
+EXTENSION_ID = user-theme
+
+include ../../extension.mk
+
+gschemas_in = org.gnome.shell.extensions.user-theme.gschema.xml.in
+
+@INTLTOOL_XML_NOMERGE_RULE@
+
+gsettings_SCHEMAS = $(gschemas_in:.xml.in=.xml)
+
+@GSETTINGS_RULES@
+
+CLEANFILES += $(gschemas_in:.xml.in=.valid) $(gsettings_SCHEMAS)
+EXTRA_DIST += $(gschemas_in)

extensions/user-theme/extension.js

@@ -0,0 +1,43 @@
+// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
+// Load shell theme from ~/.themes/name/gnome-shell
+
+const GLib = imports.gi.GLib;
+const Gio = imports.gi.Gio;
+const Lang = imports.lang;
+const Main = imports.ui.main;
+
+const SETTINGS_SCHEMA = 'org.gnome.shell.extensions.user-theme';
+const SETTINGS_KEY = 'name';
+
+function ThemeManager() {
+    this._init();
+}
+
+ThemeManager.prototype = {
+    _init: function() {
+        this._settings = new Gio.Settings({ schema: SETTINGS_SCHEMA });
+        this._settings.connect('changed::'+SETTINGS_KEY, Lang.bind(this, this._changeTheme));
+        this._changeTheme();
+    },
+
+    _changeTheme: function() {
+        let _stylesheet = null;
+        let _themeName = this._settings.get_string(SETTINGS_KEY);
+
+        if (_themeName) {
+            let _userCssStylesheet = GLib.get_home_dir() + '/.themes/' + _themeName + '/gnome-shell/gnome-shell.css';
+            file = Gio.file_new_for_path(_userCssStylesheet);
+            if (file.query_exists(null))
+                _stylesheet = _userCssStylesheet;
+        }
+
+        global.log('loading user theme: ' + _stylesheet)
+        Main.setThemeStylesheet(_stylesheet);
+        Main.loadTheme();
+    }
+}
+
+
+function main(metadata) {
+    new ThemeManager();
+}

extensions/user-theme/metadata.json.in

@@ -0,0 +1,9 @@
+{
+ "uuid": "@uuid@",
+ "name": "User Themes",
+ "description": "Load shell themes from user directory",
+ "shell-version": [ "@shell_current@" ],
+ "localedir": "@LOCALEDIR@",
+ "original-authors": [ "john.stowers@gmail.com" ],
+ "url": "@url@"
+}

extensions/user-theme/org.gnome.shell.extensions.user-theme.gschema.xml.in

@@ -0,0 +1,9 @@
+<schemalist gettext-domain="gnome-shell-extensions">
+  <schema id="org.gnome.shell.extensions.user-theme" path="/org/gnome/shell/extensions/user-theme/">
+    <key name="name" type="s">
+      <default>""</default>
+      <_summary>Theme name</_summary>
+      <_description>The name of the theme, to be loaded from ~/.themes/name/gnome-shell</_description>
+    </key>
+  </schema>
+</schemalist>

po/POTFILES.in

@@ -4,4 +4,5 @@ extensions/xrandr-indicator/extension.js
 extensions/alternate-tab/extension.js
 extensions/auto-move-windows/extension.js
 extensions/auto-move-windows/org.gnome.shell.extensions.auto-move-windows.gschema.xml.in
+extensions/user-theme/org.gnome.shell.extensions.user-theme.gschema.xml.in
 extensions/dock/extension.js