Adding upstream version 43.9.upstream/43.9upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

19 files changed, 1539 insertions, 0 deletions

diff --git a/js/dbusServices/dbus-service.in b/js/dbusServices/dbus-service.in
new file mode 100644
index 0000000..5241661
--- /dev/null
+++ b/js/dbusServices/dbus-service.in
@@ -0,0 +1,5 @@
+imports.package.start({
+    name: '@PACKAGE_NAME@',
+    prefix: '@prefix@',
+    libdir: '@libdir@',
+});
diff --git a/js/dbusServices/dbus-service.service.in b/js/dbusServices/dbus-service.service.in
new file mode 100644
index 0000000..3b0d09a
--- /dev/null
+++ b/js/dbusServices/dbus-service.service.in
@@ -0,0 +1,3 @@
+[D-BUS Service]
+Name=@service@
+Exec=@gjs@ @pkgdatadir@/@service@
diff --git a/js/dbusServices/dbusService.js b/js/dbusServices/dbusService.js
new file mode 100644
index 0000000..8b6a0a1
--- /dev/null
+++ b/js/dbusServices/dbusService.js
@@ -0,0 +1,188 @@
+/* exported DBusService, ServiceImplementation */
+
+const { Gio, GLib } = imports.gi;
+
+const Signals = imports.signals;
+
+const IDLE_SHUTDOWN_TIME = 2; // s
+
+const { programArgs } = imports.system;
+
+var ServiceImplementation = class {
+    constructor(info, objectPath) {
+        this._objectPath = objectPath;
+        this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(info, this);
+
+        this._injectTracking('return_dbus_error');
+        this._injectTracking('return_error_literal');
+        this._injectTracking('return_gerror');
+        this._injectTracking('return_value');
+        this._injectTracking('return_value_with_unix_fd_list');
+
+        this._senders = new Map();
+        this._holdCount = 0;
+
+        this._hasSignals = this._dbusImpl.get_info().signals.length > 0;
+        this._shutdownTimeoutId = 0;
+
+        // subclasses may override this to disable automatic shutdown
+        this._autoShutdown = true;
+
+        this._queueShutdownCheck();
+    }
+
+    // subclasses may override this to own additional names
+    register() {
+    }
+
+    export() {
+        this._dbusImpl.export(Gio.DBus.session, this._objectPath);
+    }
+
+    unexport() {
+        this._dbusImpl.unexport();
+    }
+
+    hold() {
+        this._holdCount++;
+    }
+
+    release() {
+        if (this._holdCount === 0) {
+            logError(new Error('Unmatched call to release()'));
+            return;
+        }
+
+        this._holdCount--;
+
+        if (this._holdCount === 0)
+            this._queueShutdownCheck();
+    }
+
+    /**
+     * _handleError:
+     * @param {Gio.DBusMethodInvocation}
+     * @param {Error}
+     *
+     * Complete @invocation with an appropriate error if @error is set;
+     * useful for implementing early returns from method implementations.
+     *
+     * @returns {bool} - true if @invocation was completed
+     */
+
+    _handleError(invocation, error) {
+        if (error === null)
+            return false;
+
+        if (error instanceof GLib.Error) {
+            invocation.return_gerror(error);
+        } else {
+            let name = error.name;
+            if (!name.includes('.')) // likely a normal JS error
+                name = `org.gnome.gjs.JSError.${name}`;
+            invocation.return_dbus_error(name, error.message);
+        }
+
+        return true;
+    }
+
+    _maybeShutdown() {
+        if (!this._autoShutdown)
+            return;
+
+        if (GLib.getenv('SHELL_DBUS_PERSIST'))
+            return;
+
+        if (this._holdCount > 0)
+            return;
+
+        this.emit('shutdown');
+    }
+
+    _queueShutdownCheck() {
+        if (this._shutdownTimeoutId)
+            GLib.source_remove(this._shutdownTimeoutId);
+
+        this._shutdownTimeoutId = GLib.timeout_add_seconds(
+            GLib.PRIORITY_DEFAULT, IDLE_SHUTDOWN_TIME,
+            () => {
+                this._shutdownTimeoutId = 0;
+                this._maybeShutdown();
+
+                return GLib.SOURCE_REMOVE;
+            });
+    }
+
+    _trackSender(sender) {
+        if (this._senders.has(sender))
+            return;
+
+        this.hold();
+        this._senders.set(sender,
+            this._dbusImpl.get_connection().watch_name(
+                sender,
+                Gio.BusNameWatcherFlags.NONE,
+                null,
+                () => this._untrackSender(sender)));
+    }
+
+    _untrackSender(sender) {
+        const id = this._senders.get(sender);
+
+        if (id)
+            this._dbusImpl.get_connection().unwatch_name(id);
+
+        if (this._senders.delete(sender))
+            this.release();
+    }
+
+    _injectTracking(methodName) {
+        const { prototype } = Gio.DBusMethodInvocation;
+        const origMethod = prototype[methodName];
+        const that = this;
+
+        prototype[methodName] = function (...args) {
+            origMethod.apply(this, args);
+
+            if (that._hasSignals)
+                that._trackSender(this.get_sender());
+
+            that._queueShutdownCheck();
+        };
+    }
+};
+Signals.addSignalMethods(ServiceImplementation.prototype);
+
+var DBusService = class {
+    constructor(name, service) {
+        this._name = name;
+        this._service = service;
+        this._loop = new GLib.MainLoop(null, false);
+
+        this._service.connect('shutdown', () => this._loop.quit());
+    }
+
+    run() {
+        // Bail out when not running under gnome-shell
+        Gio.DBus.watch_name(Gio.BusType.SESSION,
+            'org.gnome.Shell',
+            Gio.BusNameWatcherFlags.NONE,
+            null,
+            () => this._loop.quit());
+
+        this._service.register();
+
+        let flags = Gio.BusNameOwnerFlags.ALLOW_REPLACEMENT;
+        if (programArgs.includes('--replace'))
+            flags |= Gio.BusNameOwnerFlags.REPLACE;
+
+        Gio.DBus.own_name(Gio.BusType.SESSION,
+            this._name,
+            flags,
+            () => this._service.export(),
+            null,
+            () => this._loop.quit());
+
+        this._loop.run();
+    }
+};
diff --git a/js/dbusServices/extensions/css/application.css b/js/dbusServices/extensions/css/application.css
new file mode 100644
index 0000000..4ef4066
--- /dev/null
+++ b/js/dbusServices/extensions/css/application.css
@@ -0,0 +1,9 @@
+.error-page preferencespage { margin: 30px; }
+
+.expander { padding: 12px; }
+.expander.expanded { border: 0 solid @borders; border-bottom-width: 1px; }
+.expander-toolbar {
+  border: 0 solid @borders;
+  border-top-width: 1px;
+  padding: 3px;
+}
diff --git a/js/dbusServices/extensions/extensionPrefsDialog.js b/js/dbusServices/extensions/extensionPrefsDialog.js
new file mode 100644
index 0000000..7155c1a
--- /dev/null
+++ b/js/dbusServices/extensions/extensionPrefsDialog.js
@@ -0,0 +1,178 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported ExtensionPrefsDialog */
+
+const { Adw, Gdk, Gio, GLib, GObject, Gtk } = imports.gi;
+
+const ExtensionUtils = imports.misc.extensionUtils;
+
+var ExtensionPrefsDialog = GObject.registerClass({
+    GTypeName: 'ExtensionPrefsDialog',
+}, class ExtensionPrefsDialog extends Adw.PreferencesWindow {
+    _init(extension) {
+        super._init({
+            title: extension.metadata.name,
+            search_enabled: false,
+        });
+
+        try {
+            ExtensionUtils.installImporter(extension);
+
+            // give extension prefs access to their own extension object
+            ExtensionUtils.setCurrentExtension(extension);
+
+            const prefsModule = extension.imports.prefs;
+            prefsModule.init(extension.metadata);
+
+            if (prefsModule.fillPreferencesWindow) {
+                prefsModule.fillPreferencesWindow(this);
+
+                if (!this.visible_page)
+                    throw new Error('Extension did not provide any UI');
+            } else {
+                const widget = prefsModule.buildPrefsWidget();
+                const page = this._wrapWidget(widget);
+                this.add(page);
+            }
+        } catch (e) {
+            this._showErrorPage(e);
+            logError(e, 'Failed to open preferences');
+        }
+    }
+
+    set titlebar(w) {
+        this.set_titlebar(w);
+    }
+
+    // eslint-disable-next-line camelcase
+    set_titlebar() {
+        // intercept fatal libadwaita error, show error page instead
+        GLib.idle_add(GLib.PRIORITY_DEFAULT, () => {
+            this._showErrorPage(
+                new Error('set_titlebar() is not supported for Adw.Window'));
+            return GLib.SOURCE_REMOVE;
+        });
+    }
+
+    _showErrorPage(e) {
+        while (this.visible_page)
+            this.remove(this.visible_page);
+
+        const extension = ExtensionUtils.getCurrentExtension();
+        this.add(new ExtensionPrefsErrorPage(extension, e));
+    }
+
+    _wrapWidget(widget) {
+        if (widget instanceof Adw.PreferencesPage)
+            return widget;
+
+        const page = new Adw.PreferencesPage();
+        if (widget instanceof Adw.PreferencesGroup) {
+            page.add(widget);
+            return page;
+        }
+
+        const group = new Adw.PreferencesGroup();
+        group.add(widget);
+        page.add(group);
+
+        return page;
+    }
+});
+
+const ExtensionPrefsErrorPage = GObject.registerClass({
+    GTypeName: 'ExtensionPrefsErrorPage',
+    Template: 'resource:///org/gnome/Shell/Extensions/ui/extension-error-page.ui',
+    InternalChildren: [
+        'expander',
+        'expanderArrow',
+        'revealer',
+        'errorView',
+    ],
+}, class ExtensionPrefsErrorPage extends Adw.PreferencesPage {
+    static _classInit(klass) {
+        super._classInit(klass);
+
+        klass.install_action('page.copy-error',
+            null,
+            self => {
+                const clipboard = self.get_display().get_clipboard();
+                clipboard.set(self._errorMarkdown);
+            });
+        klass.install_action('page.show-url',
+            null,
+            self => Gtk.show_uri(self.get_root(), self._url, Gdk.CURRENT_TIME));
+
+        return klass;
+    }
+
+    _init(extension, error) {
+        super._init();
+
+        this._addCustomStylesheet();
+
+        this._uuid = extension.uuid;
+        this._url = extension.metadata.url || '';
+
+        this.action_set_enabled('page.show-url', this._url !== '');
+
+        this._gesture = new Gtk.GestureClick({
+            button: 0,
+            exclusive: true,
+        });
+        this._expander.add_controller(this._gesture);
+
+        this._gesture.connect('released', (gesture, nPress) => {
+            if (nPress === 1)
+                this._revealer.reveal_child = !this._revealer.reveal_child;
+        });
+
+        this._revealer.connect('notify::reveal-child', () => {
+            this._expanderArrow.icon_name = this._revealer.reveal_child
+                ? 'pan-down-symbolic'
+                : 'pan-end-symbolic';
+            this._syncExpandedStyle();
+        });
+        this._revealer.connect('notify::child-revealed',
+            () => this._syncExpandedStyle());
+
+        this._errorView.buffer.text = `${error}\n\nStack trace:\n`;
+        // Indent stack trace.
+        this._errorView.buffer.text +=
+            error.stack.split('\n').map(line => `  ${line}`).join('\n');
+
+        // markdown for pasting in gitlab issues
+        let lines = [
+            `The settings of extension ${this._uuid} had an error:`,
+            '```',
+            `${error}`,
+            '```',
+            '',
+            'Stack trace:',
+            '```',
+            error.stack.replace(/\n$/, ''), // stack without trailing newline
+            '```',
+            '',
+        ];
+        this._errorMarkdown = lines.join('\n');
+    }
+
+    _syncExpandedStyle() {
+        if (this._revealer.reveal_child)
+            this._expander.add_css_class('expanded');
+        else if (!this._revealer.child_revealed)
+            this._expander.remove_css_class('expanded');
+    }
+
+    _addCustomStylesheet() {
+        let provider = new Gtk.CssProvider();
+        let uri = 'resource:///org/gnome/Shell/Extensions/css/application.css';
+        try {
+            provider.load_from_file(Gio.File.new_for_uri(uri));
+        } catch (e) {
+            logError(e, 'Failed to add application style');
+        }
+        Gtk.StyleContext.add_provider_for_display(Gdk.Display.get_default(),
+            provider,
+            Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
+    }
+});
diff --git a/js/dbusServices/extensions/extensionsService.js b/js/dbusServices/extensions/extensionsService.js
new file mode 100644
index 0000000..d8234d2
--- /dev/null
+++ b/js/dbusServices/extensions/extensionsService.js
@@ -0,0 +1,161 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported ExtensionsService */
+
+const { Gio, GLib, Shew } = imports.gi;
+
+const ExtensionUtils = imports.misc.extensionUtils;
+
+const { loadInterfaceXML } = imports.misc.dbusUtils;
+const { ExtensionPrefsDialog } = imports.extensionPrefsDialog;
+const { ServiceImplementation } = imports.dbusService;
+
+const ExtensionsIface = loadInterfaceXML('org.gnome.Shell.Extensions');
+const ExtensionsProxy = Gio.DBusProxy.makeProxyWrapper(ExtensionsIface);
+
+var ExtensionsService = class extends ServiceImplementation {
+    constructor() {
+        super(ExtensionsIface, '/org/gnome/Shell/Extensions');
+
+        this._proxy = new ExtensionsProxy(Gio.DBus.session,
+            'org.gnome.Shell', '/org/gnome/Shell');
+
+        this._proxy.connectSignal('ExtensionStateChanged',
+            (proxy, sender, params) => {
+                this._dbusImpl.emit_signal('ExtensionStateChanged',
+                    new GLib.Variant('(sa{sv})', params));
+            });
+
+        this._proxy.connect('g-properties-changed', () => {
+            this._dbusImpl.emit_property_changed('UserExtensionsEnabled',
+                new GLib.Variant('b', this._proxy.UserExtensionsEnabled));
+        });
+    }
+
+    get ShellVersion() {
+        return this._proxy.ShellVersion;
+    }
+
+    get UserExtensionsEnabled() {
+        return this._proxy.UserExtensionsEnabled;
+    }
+
+    set UserExtensionsEnabled(enable) {
+        this._proxy.UserExtensionsEnabled = enable;
+    }
+
+    async ListExtensionsAsync(params, invocation) {
+        try {
+            const res = await this._proxy.ListExtensionsAsync(...params);
+            invocation.return_value(new GLib.Variant('(a{sa{sv}})', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async GetExtensionInfoAsync(params, invocation) {
+        try {
+            const res = await this._proxy.GetExtensionInfoAsync(...params);
+            invocation.return_value(new GLib.Variant('(a{sv})', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async GetExtensionErrorsAsync(params, invocation) {
+        try {
+            const res = await this._proxy.GetExtensionErrorsAsync(...params);
+            invocation.return_value(new GLib.Variant('(as)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async InstallRemoteExtensionAsync(params, invocation) {
+        try {
+            const res = await this._proxy.InstallRemoteExtensionAsync(...params);
+            invocation.return_value(new GLib.Variant('(s)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async UninstallExtensionAsync(params, invocation) {
+        try {
+            const res = await this._proxy.UninstallExtensionAsync(...params);
+            invocation.return_value(new GLib.Variant('(b)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async EnableExtensionAsync(params, invocation) {
+        try {
+            const res = await this._proxy.EnableExtensionAsync(...params);
+            invocation.return_value(new GLib.Variant('(b)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async DisableExtensionAsync(params, invocation) {
+        try {
+            const res = await this._proxy.DisableExtensionAsync(...params);
+            invocation.return_value(new GLib.Variant('(b)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    LaunchExtensionPrefsAsync([uuid], invocation) {
+        this.OpenExtensionPrefsAsync([uuid, '', {}], invocation);
+    }
+
+    async OpenExtensionPrefsAsync(params, invocation) {
+        const [uuid, parentWindow, options] = params;
+
+        try {
+            const [serialized] = await this._proxy.GetExtensionInfoAsync(uuid);
+
+            if (this._prefsDialog)
+                throw new Error('Already showing a prefs dialog');
+
+            const extension = ExtensionUtils.deserializeExtension(serialized);
+
+            this._prefsDialog = new ExtensionPrefsDialog(extension);
+            this._prefsDialog.connect('realize', () => {
+                let externalWindow = null;
+
+                if (parentWindow)
+                    externalWindow = Shew.ExternalWindow.new_from_handle(parentWindow);
+
+                if (externalWindow)
+                    externalWindow.set_parent_of(this._prefsDialog.get_surface());
+            });
+
+            if (options.modal)
+                this._prefsDialog.modal = options.modal.get_boolean();
+
+            this._prefsDialog.connect('close-request', () => {
+                delete this._prefsDialog;
+                this.release();
+                return false;
+            });
+            this.hold();
+
+            this._prefsDialog.show();
+
+            invocation.return_value(null);
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async CheckForUpdatesAsync(params, invocation) {
+        try {
+            await this._proxy.CheckForUpdatesAsync(...params);
+            invocation.return_value(null);
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+};
diff --git a/js/dbusServices/extensions/main.js b/js/dbusServices/extensions/main.js
new file mode 100644
index 0000000..306fe36
--- /dev/null
+++ b/js/dbusServices/extensions/main.js
@@ -0,0 +1,23 @@
+/* exported main */
+
+imports.gi.versions.Adw = '1';
+imports.gi.versions.Gdk = '4.0';
+imports.gi.versions.Gtk = '4.0';
+
+const { Adw, GObject } = imports.gi;
+const pkg = imports.package;
+
+const { DBusService } = imports.dbusService;
+const { ExtensionsService } = imports.extensionsService;
+
+function main() {
+    Adw.init();
+    pkg.initFormat();
+
+    GObject.gtypeNameBasedOnJSPath = true;
+
+    const service = new DBusService(
+        'org.gnome.Shell.Extensions',
+        new ExtensionsService());
+    service.run();
+}
diff --git a/js/dbusServices/extensions/ui/extension-error-page.ui b/js/dbusServices/extensions/ui/extension-error-page.ui
new file mode 100644
index 0000000..5ce6a62
--- /dev/null
+++ b/js/dbusServices/extensions/ui/extension-error-page.ui
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <template class="ExtensionPrefsErrorPage" parent="AdwPreferencesPage">
+    <style>
+      <class name="error-page"/>
+    </style>
+    <child>
+      <object class="AdwPreferencesGroup">
+        <child>
+          <object class="GtkBox">
+            <property name="orientation">vertical</property>
+            <property name="spacing">12</property>
+            <child>
+              <object class="GtkLabel">
+                <property name="label" translatable="yes">Something’s gone wrong</property>
+                <style>
+                  <class name="title-1"/>
+                </style>
+              </object>
+            </child>
+            <child>
+              <object class="GtkLabel">
+                <property name="label" translatable="yes">We’re very sorry, but there’s been a problem: the settings for this extension can’t be displayed. We recommend that you report the issue to the extension authors.</property>
+                <property name="justify">center</property>
+                <property name="wrap">True</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkFrame">
+                <property name="margin-top">12</property>
+                <child>
+                  <object class="GtkBox">
+                    <property name="hexpand">True</property>
+                    <property name="orientation">vertical</property>
+                    <child>
+                      <object class="GtkBox" id="expander">
+                        <property name="spacing">6</property>
+                        <style>
+                          <class name="expander"/>
+                        </style>
+                        <child>
+                          <object class="GtkImage" id="expanderArrow">
+                            <property name="icon-name">pan-end-symbolic</property>
+                          </object>
+                        </child>
+                        <child>
+                          <object class="GtkLabel">
+                            <property name="label" translatable="yes">Technical Details</property>
+                          </object>
+                        </child>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkRevealer" id="revealer">
+                        <child>
+                          <object class="GtkBox">
+                            <property name="orientation">vertical</property>
+                            <child>
+                              <object class="GtkTextView" id="errorView">
+                                <property name="monospace">True</property>
+                                <property name="editable">False</property>
+                                <property name="wrap-mode">word</property>
+                                <property name="left-margin">12</property>
+                                <property name="right-margin">12</property>
+                                <property name="top-margin">12</property>
+                                <property name="bottom-margin">12</property>
+                              </object>
+                            </child>
+                            <child>
+                              <object class="GtkBox">
+                                <style>
+                                  <class name="expander-toolbar"/>
+                                </style>
+                                <child>
+                                  <object class="GtkButton">
+                                    <property name="receives-default">True</property>
+                                    <property name="action-name">page.copy-error</property>
+                                    <property name="has-frame">False</property>
+                                    <property name="icon-name">edit-copy-symbolic</property>
+                                  </object>
+                                </child>
+                                <child>
+                                  <object class="GtkButton" id="homeButton">
+                                    <property name="visible"
+                                              bind-source="homeButton"
+                                              bind-property="sensitive"
+                                              bind-flags="sync-create"/>
+                                    <property name="hexpand">True</property>
+                                    <property name="halign">end</property>
+                                    <property name="label" translatable="yes">Homepage</property>
+                                    <property name="tooltip-text" translatable="yes">Visit extension homepage</property>
+                                    <property name="receives-default">True</property>
+                                    <property name="has-frame">False</property>
+                                    <property name="action-name">page.show-url</property>
+                                  </object>
+                                </child>
+                              </object>
+                            </child>
+                          </object>
+                        </child>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>
diff --git a/js/dbusServices/meson.build b/js/dbusServices/meson.build
new file mode 100644
index 0000000..48b7f89
--- /dev/null
+++ b/js/dbusServices/meson.build
@@ -0,0 +1,44 @@
+launcherconf = configuration_data()
+launcherconf.set('PACKAGE_NAME', meson.project_name())
+launcherconf.set('prefix', prefix)
+launcherconf.set('libdir', libdir)
+
+dbus_services = {
+  'org.gnome.Shell.Extensions': 'extensions',
+  'org.gnome.Shell.Notifications': 'notifications',
+  'org.gnome.Shell.Screencast': 'screencast',
+  'org.gnome.ScreenSaver': 'screensaver',
+}
+
+config_dir = '@0@/..'.format(meson.current_build_dir())
+
+foreach service, dir : dbus_services
+  configure_file(
+    input: 'dbus-service.in',
+    output: service,
+    configuration: launcherconf,
+    install_dir: pkgdatadir,
+  )
+
+  serviceconf = configuration_data()
+  serviceconf.set('service', service)
+  serviceconf.set('gjs', gjs.full_path())
+  serviceconf.set('pkgdatadir', pkgdatadir)
+
+  configure_file(
+    input: 'dbus-service.service.in',
+    output: service + '.service',
+    configuration: serviceconf,
+    install_dir: servicedir
+  )
+
+  gnome.compile_resources(
+    service + '.src',
+    service + '.src.gresource.xml',
+    dependencies: [config_js],
+    source_dir: ['.', '..', dir, config_dir],
+    gresource_bundle: true,
+    install: true,
+    install_dir: pkgdatadir
+  )
+endforeach
diff --git a/js/dbusServices/notifications/main.js b/js/dbusServices/notifications/main.js
new file mode 100644
index 0000000..7944cd1
--- /dev/null
+++ b/js/dbusServices/notifications/main.js
@@ -0,0 +1,11 @@
+/* exported main */
+
+const { DBusService } = imports.dbusService;
+const { NotificationDaemon } = imports.notificationDaemon;
+
+function main() {
+    const service = new DBusService(
+        'org.gnome.Shell.Notifications',
+        new NotificationDaemon());
+    service.run();
+}
diff --git a/js/dbusServices/notifications/notificationDaemon.js b/js/dbusServices/notifications/notificationDaemon.js
new file mode 100644
index 0000000..b22f4ec
--- /dev/null
+++ b/js/dbusServices/notifications/notificationDaemon.js
@@ -0,0 +1,160 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported NotificationDaemon */
+
+const { Gio, GLib } = imports.gi;
+
+const { loadInterfaceXML } = imports.misc.dbusUtils;
+const { ServiceImplementation } = imports.dbusService;
+
+const NotificationsIface = loadInterfaceXML('org.freedesktop.Notifications');
+const NotificationsProxy = Gio.DBusProxy.makeProxyWrapper(NotificationsIface);
+
+Gio._promisify(Gio.DBusConnection.prototype, 'call');
+
+var NotificationDaemon = class extends ServiceImplementation {
+    constructor() {
+        super(NotificationsIface, '/org/freedesktop/Notifications');
+
+        this._autoShutdown = false;
+
+        this._activeNotifications = new Map();
+
+        this._proxy = new NotificationsProxy(Gio.DBus.session,
+            'org.gnome.Shell',
+            '/org/freedesktop/Notifications',
+            (proxy, error) => {
+                if (error)
+                    log(error.message);
+            });
+
+        this._proxy.connectSignal('ActionInvoked',
+            (proxy, sender, params) => {
+                const [id] = params;
+                this._emitSignal(
+                    this._activeNotifications.get(id),
+                    'ActionInvoked',
+                    new GLib.Variant('(us)', params));
+            });
+        this._proxy.connectSignal('NotificationClosed',
+            (proxy, sender, params) => {
+                const [id] = params;
+                this._emitSignal(
+                    this._activeNotifications.get(id),
+                    'NotificationClosed',
+                    new GLib.Variant('(uu)', params));
+                this._activeNotifications.delete(id);
+            });
+    }
+
+    _emitSignal(sender, signalName, params) {
+        if (!sender)
+            return;
+        this._dbusImpl.get_connection()?.emit_signal(
+            sender,
+            this._dbusImpl.get_object_path(),
+            'org.freedesktop.Notifications',
+            signalName,
+            params);
+    }
+
+    _untrackSender(sender) {
+        super._untrackSender(sender);
+
+        this._activeNotifications.forEach((value, key) => {
+            if (value === sender)
+                this._activeNotifications.delete(key);
+        });
+    }
+
+    _checkNotificationId(invocation, id) {
+        if (id === 0)
+            return true;
+
+        if (!this._activeNotifications.has(id))
+            return true;
+
+        if (this._activeNotifications.get(id) === invocation.get_sender())
+            return true;
+
+        const error = new GLib.Error(Gio.DBusError,
+            Gio.DBusError.INVALID_ARGS, 'Invalid notification ID');
+        this._handleError(invocation, error);
+        return false;
+    }
+
+    register() {
+        Gio.DBus.session.own_name(
+            'org.freedesktop.Notifications',
+            Gio.BusNameOwnerFlags.REPLACE,
+            null, null);
+    }
+
+    async NotifyAsync(params, invocation) {
+        const sender = invocation.get_sender();
+        const pid = await this._getSenderPid(sender);
+        const replaceId = params[1];
+        const hints = params[6];
+
+        if (!this._checkNotificationId(invocation, replaceId))
+            return;
+
+        params[6] = {
+            ...hints,
+            'sender-pid': new GLib.Variant('u', pid),
+        };
+
+        try {
+            const [id] = await this._proxy.NotifyAsync(...params);
+            this._activeNotifications.set(id, sender);
+            invocation.return_value(new GLib.Variant('(u)', [id]));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async CloseNotificationAsync(params, invocation) {
+        const [id] = params;
+        if (!this._checkNotificationId(invocation, id))
+            return;
+
+        try {
+            await this._proxy.CloseNotificationAsync(...params);
+            invocation.return_value(null);
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async GetCapabilitiesAsync(params, invocation) {
+        try {
+            const res = await this._proxy.GetCapabilitiesAsync(...params);
+            invocation.return_value(new GLib.Variant('(as)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async GetServerInformationAsync(params, invocation) {
+        try {
+            const res = await this._proxy.GetServerInformationAsync(...params);
+            invocation.return_value(new GLib.Variant('(ssss)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async _getSenderPid(sender) {
+        const res = await Gio.DBus.session.call(
+            'org.freedesktop.DBus',
+            '/',
+            'org.freedesktop.DBus',
+            'GetConnectionUnixProcessID',
+            new GLib.Variant('(s)', [sender]),
+            new GLib.VariantType('(u)'),
+            Gio.DBusCallFlags.NONE,
+            -1,
+            null);
+        const [pid] = res.deepUnpack();
+        return pid;
+    }
+};
diff --git a/js/dbusServices/org.gnome.ScreenSaver.src.gresource.xml b/js/dbusServices/org.gnome.ScreenSaver.src.gresource.xml
new file mode 100644
index 0000000..d77f72a
--- /dev/null
+++ b/js/dbusServices/org.gnome.ScreenSaver.src.gresource.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/gnome/ScreenSaver/js">
+    <file>main.js</file>
+    <file>screenSaverService.js</file>
+    <file>dbusService.js</file>
+
+    <file>misc/config.js</file>
+    <file>misc/dbusUtils.js</file>
+  </gresource>
+</gresources>
diff --git a/js/dbusServices/org.gnome.Shell.Extensions.src.gresource.xml b/js/dbusServices/org.gnome.Shell.Extensions.src.gresource.xml
new file mode 100644
index 0000000..3ab92a2
--- /dev/null
+++ b/js/dbusServices/org.gnome.Shell.Extensions.src.gresource.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/gnome/Shell/Extensions/js">
+    <file>main.js</file>
+    <file>extensionsService.js</file>
+    <file>extensionPrefsDialog.js</file>
+    <file>dbusService.js</file>
+
+    <file>misc/config.js</file>
+    <file>misc/extensionUtils.js</file>
+    <file>misc/dbusUtils.js</file>
+    <file>misc/params.js</file>
+  </gresource>
+
+  <gresource prefix="/org/gnome/Shell/Extensions">
+    <file>css/application.css</file>
+    <file>ui/extension-error-page.ui</file>
+  </gresource>
+</gresources>
diff --git a/js/dbusServices/org.gnome.Shell.Notifications.src.gresource.xml b/js/dbusServices/org.gnome.Shell.Notifications.src.gresource.xml
new file mode 100644
index 0000000..4e039ba
--- /dev/null
+++ b/js/dbusServices/org.gnome.Shell.Notifications.src.gresource.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/gnome/Shell/Notifications/js">
+    <file>main.js</file>
+    <file>notificationDaemon.js</file>
+    <file>dbusService.js</file>
+
+    <file>misc/config.js</file>
+    <file>misc/dbusUtils.js</file>
+  </gresource>
+</gresources>
diff --git a/js/dbusServices/org.gnome.Shell.Screencast.src.gresource.xml b/js/dbusServices/org.gnome.Shell.Screencast.src.gresource.xml
new file mode 100644
index 0000000..292f0f1
--- /dev/null
+++ b/js/dbusServices/org.gnome.Shell.Screencast.src.gresource.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+  <gresource prefix="/org/gnome/Shell/Screencast/js">
+    <file>main.js</file>
+    <file>screencastService.js</file>
+    <file>dbusService.js</file>
+
+    <file>misc/config.js</file>
+    <file>misc/dbusUtils.js</file>
+  </gresource>
+</gresources>
diff --git a/js/dbusServices/screencast/main.js b/js/dbusServices/screencast/main.js
new file mode 100644
index 0000000..7c71971
--- /dev/null
+++ b/js/dbusServices/screencast/main.js
@@ -0,0 +1,14 @@
+/* exported main */
+
+const {DBusService} = imports.dbusService;
+
+function main() {
+    const {ScreencastService} = imports.screencastService;
+    if (!ScreencastService.canScreencast())
+        return;
+
+    const service = new DBusService(
+        'org.gnome.Shell.Screencast',
+        new ScreencastService());
+    service.run();
+}
diff --git a/js/dbusServices/screencast/screencastService.js b/js/dbusServices/screencast/screencastService.js
new file mode 100644
index 0000000..eb3dc88
--- /dev/null
+++ b/js/dbusServices/screencast/screencastService.js
@@ -0,0 +1,498 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported ScreencastService */
+
+imports.gi.versions.Gst = '1.0';
+imports.gi.versions.Gtk = '4.0';
+
+const { Gio, GLib, Gst, Gtk } = imports.gi;
+
+const { loadInterfaceXML, loadSubInterfaceXML } = imports.misc.dbusUtils;
+const { ServiceImplementation } = imports.dbusService;
+
+const ScreencastIface = loadInterfaceXML('org.gnome.Shell.Screencast');
+
+const IntrospectIface = loadInterfaceXML('org.gnome.Shell.Introspect');
+const IntrospectProxy = Gio.DBusProxy.makeProxyWrapper(IntrospectIface);
+
+const ScreenCastIface = loadSubInterfaceXML(
+    'org.gnome.Mutter.ScreenCast', 'org.gnome.Mutter.ScreenCast');
+const ScreenCastSessionIface = loadSubInterfaceXML(
+    'org.gnome.Mutter.ScreenCast.Session', 'org.gnome.Mutter.ScreenCast');
+const ScreenCastStreamIface = loadSubInterfaceXML(
+    'org.gnome.Mutter.ScreenCast.Stream', 'org.gnome.Mutter.ScreenCast');
+const ScreenCastProxy = Gio.DBusProxy.makeProxyWrapper(ScreenCastIface);
+const ScreenCastSessionProxy = Gio.DBusProxy.makeProxyWrapper(ScreenCastSessionIface);
+const ScreenCastStreamProxy = Gio.DBusProxy.makeProxyWrapper(ScreenCastStreamIface);
+
+const DEFAULT_PIPELINE = 'videoconvert chroma-mode=GST_VIDEO_CHROMA_MODE_NONE dither=GST_VIDEO_DITHER_NONE matrix-mode=GST_VIDEO_MATRIX_MODE_OUTPUT_ONLY n-threads=%T ! queue ! vp8enc cpu-used=16 max-quantizer=17 deadline=1 keyframe-mode=disabled threads=%T static-threshold=1000 buffer-size=20000 ! queue ! webmmux';
+const DEFAULT_FRAMERATE = 30;
+const DEFAULT_DRAW_CURSOR = true;
+
+const PipelineState = {
+    INIT: 0,
+    PLAYING: 1,
+    FLUSHING: 2,
+    STOPPED: 3,
+};
+
+const SessionState = {
+    INIT: 0,
+    ACTIVE: 1,
+    STOPPED: 2,
+};
+
+var Recorder = class {
+    constructor(sessionPath, x, y, width, height, filePath, options,
+        invocation,
+        onErrorCallback) {
+        this._startInvocation = invocation;
+        this._dbusConnection = invocation.get_connection();
+        this._onErrorCallback = onErrorCallback;
+        this._stopInvocation = null;
+
+        this._x = x;
+        this._y = y;
+        this._width = width;
+        this._height = height;
+        this._filePath = filePath;
+
+        try {
+            const dir = Gio.File.new_for_path(filePath).get_parent();
+            dir.make_directory_with_parents(null);
+        } catch (e) {
+            if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.EXISTS))
+                throw e;
+        }
+
+        this._pipelineString = DEFAULT_PIPELINE;
+        this._framerate = DEFAULT_FRAMERATE;
+        this._drawCursor = DEFAULT_DRAW_CURSOR;
+
+        this._applyOptions(options);
+        this._watchSender(invocation.get_sender());
+
+        this._initSession(sessionPath);
+    }
+
+    _applyOptions(options) {
+        for (const option in options)
+            options[option] = options[option].deepUnpack();
+
+        if (options['pipeline'] !== undefined)
+            this._pipelineString = options['pipeline'];
+        if (options['framerate'] !== undefined)
+            this._framerate = options['framerate'];
+        if ('draw-cursor' in options)
+            this._drawCursor = options['draw-cursor'];
+    }
+
+    _addRecentItem() {
+        const file = Gio.File.new_for_path(this._filePath);
+        Gtk.RecentManager.get_default().add_item(file.get_uri());
+    }
+
+    _watchSender(sender) {
+        this._nameWatchId = this._dbusConnection.watch_name(
+            sender,
+            Gio.BusNameWatcherFlags.NONE,
+            null,
+            this._senderVanished.bind(this));
+    }
+
+    _unwatchSender() {
+        if (this._nameWatchId !== 0) {
+            this._dbusConnection.unwatch_name(this._nameWatchId);
+            this._nameWatchId = 0;
+        }
+    }
+
+    _senderVanished() {
+        this._unwatchSender();
+
+        this.stopRecording(null);
+    }
+
+    _notifyStopped() {
+        this._unwatchSender();
+        if (this._onStartedCallback)
+            this._onStartedCallback(this, false);
+        else if (this._onStoppedCallback)
+            this._onStoppedCallback(this);
+        else
+            this._onErrorCallback(this);
+    }
+
+    _onSessionClosed() {
+        switch (this._pipelineState) {
+        case PipelineState.STOPPED:
+            break;
+        default:
+            this._pipeline.set_state(Gst.State.NULL);
+            log(`Unexpected pipeline state: ${this._pipelineState}`);
+            break;
+        }
+        this._notifyStopped();
+    }
+
+    _initSession(sessionPath) {
+        this._sessionProxy = new ScreenCastSessionProxy(Gio.DBus.session,
+            'org.gnome.Mutter.ScreenCast',
+            sessionPath);
+        this._sessionProxy.connectSignal('Closed', this._onSessionClosed.bind(this));
+    }
+
+    _startPipeline(nodeId) {
+        if (!this._ensurePipeline(nodeId))
+            return;
+
+        const bus = this._pipeline.get_bus();
+        bus.add_watch(bus, this._onBusMessage.bind(this));
+
+        this._pipeline.set_state(Gst.State.PLAYING);
+        this._pipelineState = PipelineState.PLAYING;
+
+        this._onStartedCallback(this, true);
+        this._onStartedCallback = null;
+    }
+
+    startRecording(onStartedCallback) {
+        this._onStartedCallback = onStartedCallback;
+
+        const [streamPath] = this._sessionProxy.RecordAreaSync(
+            this._x, this._y,
+            this._width, this._height,
+            {
+                'is-recording': GLib.Variant.new('b', true),
+                'cursor-mode': GLib.Variant.new('u', this._drawCursor ? 1 : 0),
+            });
+
+        this._streamProxy = new ScreenCastStreamProxy(Gio.DBus.session,
+            'org.gnome.ScreenCast.Stream',
+            streamPath);
+
+        this._streamProxy.connectSignal('PipeWireStreamAdded',
+            (proxy, sender, params) => {
+                const [nodeId] = params;
+                this._startPipeline(nodeId);
+            });
+        this._sessionProxy.StartSync();
+        this._sessionState = SessionState.ACTIVE;
+    }
+
+    stopRecording(onStoppedCallback) {
+        this._pipelineState = PipelineState.FLUSHING;
+        this._onStoppedCallback = onStoppedCallback;
+        this._pipeline.send_event(Gst.Event.new_eos());
+    }
+
+    _stopSession() {
+        this._sessionProxy.StopSync();
+        this._sessionState = SessionState.STOPPED;
+    }
+
+    _onBusMessage(bus, message, _) {
+        switch (message.type) {
+        case Gst.MessageType.EOS:
+            this._pipeline.set_state(Gst.State.NULL);
+            this._addRecentItem();
+
+            switch (this._pipelineState) {
+            case PipelineState.FLUSHING:
+                this._pipelineState = PipelineState.STOPPED;
+                break;
+            default:
+                break;
+            }
+
+            switch (this._sessionState) {
+            case SessionState.ACTIVE:
+                this._stopSession();
+                break;
+            case SessionState.STOPPED:
+                this._notifyStopped();
+                break;
+            default:
+                break;
+            }
+
+            break;
+        default:
+            break;
+        }
+        return true;
+    }
+
+    _substituteThreadCount(pipelineDescr) {
+        const numProcessors = GLib.get_num_processors();
+        const numThreads = Math.min(Math.max(1, numProcessors), 64);
+        return pipelineDescr.replaceAll('%T', numThreads);
+    }
+
+    _ensurePipeline(nodeId) {
+        const framerate = this._framerate;
+        const needsCopy =
+            Gst.Registry.get().check_feature_version('pipewiresrc', 0, 3, 57) &&
+            !Gst.Registry.get().check_feature_version('videoconvert', 1, 20, 4);
+
+        let fullPipeline = `
+            pipewiresrc path=${nodeId}
+                        always-copy=${needsCopy}
+                        do-timestamp=true
+                        keepalive-time=1000
+                        resend-last=true !
+            video/x-raw,max-framerate=${framerate}/1 !
+            ${this._pipelineString} !
+            filesink location="${this._filePath}"`;
+        fullPipeline = this._substituteThreadCount(fullPipeline);
+
+        try {
+            this._pipeline = Gst.parse_launch_full(fullPipeline,
+                null,
+                Gst.ParseFlags.FATAL_ERRORS);
+        }  catch (e) {
+            log(`Failed to create pipeline: ${e}`);
+            this._notifyStopped();
+        }
+        return !!this._pipeline;
+    }
+};
+
+var ScreencastService = class extends ServiceImplementation {
+    static canScreencast() {
+        const elements = [
+            'pipewiresrc',
+            'filesink',
+            ...DEFAULT_PIPELINE.split('!').map(e => e.trim().split(' ').at(0)),
+        ];
+        return Gst.init_check(null) &&
+            elements.every(e => Gst.ElementFactory.find(e) != null);
+    }
+
+    constructor() {
+        super(ScreencastIface, '/org/gnome/Shell/Screencast');
+
+        this.hold(); // gstreamer initializing can take a bit
+        this._canScreencast = ScreencastService.canScreencast();
+
+        Gst.init(null);
+        Gtk.init();
+
+        this.release();
+
+        this._recorders = new Map();
+        this._senders = new Map();
+
+        this._lockdownSettings = new Gio.Settings({
+            schema_id: 'org.gnome.desktop.lockdown',
+        });
+
+        this._proxy = new ScreenCastProxy(Gio.DBus.session,
+            'org.gnome.Mutter.ScreenCast',
+            '/org/gnome/Mutter/ScreenCast');
+
+        this._introspectProxy = new IntrospectProxy(Gio.DBus.session,
+            'org.gnome.Shell.Introspect',
+            '/org/gnome/Shell/Introspect');
+    }
+
+    get ScreencastSupported() {
+        return this._canScreencast;
+    }
+
+    _removeRecorder(sender) {
+        this._recorders.delete(sender);
+        if (this._recorders.size === 0)
+            this.release();
+    }
+
+    _addRecorder(sender, recorder) {
+        this._recorders.set(sender, recorder);
+        if (this._recorders.size === 1)
+            this.hold();
+    }
+
+    _getAbsolutePath(filename) {
+        if (GLib.path_is_absolute(filename))
+            return filename;
+
+        const videoDir =
+            GLib.get_user_special_dir(GLib.UserDirectory.DIRECTORY_VIDEOS) ||
+            GLib.get_home_dir();
+
+        return GLib.build_filenamev([videoDir, filename]);
+    }
+
+    _generateFilePath(template) {
+        let filename = '';
+        let escape = false;
+
+        [...template].forEach(c => {
+            if (escape) {
+                switch (c) {
+                case '%':
+                    filename += '%';
+                    break;
+                case 'd': {
+                    const datetime = GLib.DateTime.new_now_local();
+                    const datestr = datetime.format('%Y-%m-%d');
+
+                    filename += datestr;
+                    break;
+                }
+
+                case 't': {
+                    const datetime = GLib.DateTime.new_now_local();
+                    const datestr = datetime.format('%H-%M-%S');
+
+                    filename += datestr;
+                    break;
+                }
+
+                default:
+                    log(`Warning: Unknown escape ${c}`);
+                }
+
+                escape = false;
+            } else if (c === '%') {
+                escape = true;
+            } else {
+                filename += c;
+            }
+        });
+
+        if (escape)
+            filename += '%';
+
+        return this._getAbsolutePath(filename);
+    }
+
+    ScreencastAsync(params, invocation) {
+        let returnValue = [false, ''];
+
+        if (this._lockdownSettings.get_boolean('disable-save-to-disk')) {
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+            return;
+        }
+
+        const sender = invocation.get_sender();
+
+        if (this._recorders.get(sender)) {
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+            return;
+        }
+
+        const [sessionPath] = this._proxy.CreateSessionSync({});
+
+        const [fileTemplate, options] = params;
+        const [screenWidth, screenHeight] = this._introspectProxy.ScreenSize;
+        const filePath = this._generateFilePath(fileTemplate);
+
+        let recorder;
+
+        try {
+            recorder = new Recorder(
+                sessionPath,
+                0, 0,
+                screenWidth, screenHeight,
+                filePath,
+                options,
+                invocation,
+                _recorder => this._removeRecorder(sender));
+        } catch (error) {
+            log(`Failed to create recorder: ${error.message}`);
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+            return;
+        }
+
+        this._addRecorder(sender, recorder);
+
+        try {
+            recorder.startRecording(
+                (_, result) => {
+                    if (result) {
+                        returnValue = [true, filePath];
+                        invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+                    } else {
+                        this._removeRecorder(sender);
+                        invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+                    }
+                });
+        } catch (error) {
+            log(`Failed to start recorder: ${error.message}`);
+            this._removeRecorder(sender);
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+        }
+    }
+
+    ScreencastAreaAsync(params, invocation) {
+        let returnValue = [false, ''];
+
+        if (this._lockdownSettings.get_boolean('disable-save-to-disk')) {
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+            return;
+        }
+
+        const sender = invocation.get_sender();
+
+        if (this._recorders.get(sender)) {
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+            return;
+        }
+
+        const [sessionPath] = this._proxy.CreateSessionSync({});
+
+        const [x, y, width, height, fileTemplate, options] = params;
+        const filePath = this._generateFilePath(fileTemplate);
+
+        let recorder;
+
+        try {
+            recorder = new Recorder(
+                sessionPath,
+                x, y,
+                width, height,
+                filePath,
+                options,
+                invocation,
+                _recorder => this._removeRecorder(sender));
+        } catch (error) {
+            log(`Failed to create recorder: ${error.message}`);
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+            return;
+        }
+
+        this._addRecorder(sender, recorder);
+
+        try {
+            recorder.startRecording(
+                (_, result) => {
+                    if (result) {
+                        returnValue = [true, filePath];
+                        invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+                    } else {
+                        this._removeRecorder(sender);
+                        invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+                    }
+                });
+        } catch (error) {
+            log(`Failed to start recorder: ${error.message}`);
+            this._removeRecorder(sender);
+            invocation.return_value(GLib.Variant.new('(bs)', returnValue));
+        }
+    }
+
+    StopScreencastAsync(params, invocation) {
+        const sender = invocation.get_sender();
+
+        const recorder = this._recorders.get(sender);
+        if (!recorder) {
+            invocation.return_value(GLib.Variant.new('(b)', [false]));
+            return;
+        }
+
+        recorder.stopRecording(() => {
+            this._removeRecorder(sender);
+            invocation.return_value(GLib.Variant.new('(b)', [true]));
+        });
+    }
+};
diff --git a/js/dbusServices/screensaver/main.js b/js/dbusServices/screensaver/main.js
new file mode 100644
index 0000000..2a08d14
--- /dev/null
+++ b/js/dbusServices/screensaver/main.js
@@ -0,0 +1,11 @@
+/* exported main */
+
+const { DBusService } = imports.dbusService;
+const { ScreenSaverService } = imports.screenSaverService;
+
+function main() {
+    const service = new DBusService(
+        'org.gnome.ScreenSaver',
+        new ScreenSaverService());
+    service.run();
+}
diff --git a/js/dbusServices/screensaver/screenSaverService.js b/js/dbusServices/screensaver/screenSaverService.js
new file mode 100644
index 0000000..2c1546e
--- /dev/null
+++ b/js/dbusServices/screensaver/screenSaverService.js
@@ -0,0 +1,70 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported ScreenSaverService */
+
+const { Gio, GLib } = imports.gi;
+
+const { loadInterfaceXML } = imports.misc.dbusUtils;
+const { ServiceImplementation } = imports.dbusService;
+
+const ScreenSaverIface = loadInterfaceXML('org.gnome.ScreenSaver');
+const ScreenSaverProxy = Gio.DBusProxy.makeProxyWrapper(ScreenSaverIface);
+
+var ScreenSaverService = class extends ServiceImplementation {
+    constructor() {
+        super(ScreenSaverIface, '/org/gnome/ScreenSaver');
+
+        this._autoShutdown = false;
+
+        this._proxy = new ScreenSaverProxy(Gio.DBus.session,
+            'org.gnome.Shell.ScreenShield',
+            '/org/gnome/ScreenSaver',
+            (proxy, error) => {
+                if (error)
+                    log(error.message);
+            });
+
+        this._proxy.connectSignal('ActiveChanged',
+            (proxy, sender, params) => {
+                this._dbusImpl.emit_signal('ActiveChanged',
+                    new GLib.Variant('(b)', params));
+            });
+        this._proxy.connectSignal('WakeUpScreen',
+            () => this._dbusImpl.emit_signal('WakeUpScreen', null));
+    }
+
+    async LockAsync(params, invocation) {
+        try {
+            await this._proxy.LockAsync(...params);
+            invocation.return_value(null);
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async GetActiveAsync(params, invocation) {
+        try {
+            const res = await this._proxy.GetActiveAsync(...params);
+            invocation.return_value(new GLib.Variant('(b)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async SetActiveAsync(params, invocation) {
+        try {
+            await this._proxy.SetActiveAsync(...params);
+            invocation.return_value(null);
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+
+    async GetActiveTimeAsync(params, invocation) {
+        try {
+            const res = await this._proxy.GetActiveTimeAsync(...params);
+            invocation.return_value(new GLib.Variant('(u)', res));
+        } catch (error) {
+            this._handleError(invocation, error);
+        }
+    }
+};