bb2764dc69
Add a D-Bus API that allows the API user to introspect the application state of the shell. Currently the only exposed information is list of running applications and which one is active (i.e. has focus). https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/326 (cherry picked from commit 10c68c6b952959d105c3126fc61f22a199e8e848)
117 lines
4.0 KiB
JavaScript
117 lines
4.0 KiB
JavaScript
const Gio = imports.gi.Gio;
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const GLib = imports.gi.GLib;
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const Lang = imports.lang;
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const Meta = imports.gi.Meta;
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const Shell = imports.gi.Shell;
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const INTROSPECT_SCHEMA = 'org.gnome.shell';
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const INTROSPECT_KEY = 'introspect';
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const APP_WHITELIST = ['org.freedesktop.impl.portal.desktop.gtk'];
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const IntrospectDBusIface = '<node> \
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<interface name="org.gnome.Shell.Introspect"> \
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<signal name="RunningApplicationsChanged" /> \
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<method name="GetRunningApplications"> \
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<arg name="apps" direction="out" type="a{sa{sv}}" /> \
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</method> \
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</interface> \
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</node>';
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var IntrospectService = new Lang.Class({
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Name: 'IntrospectService',
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_init() {
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this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(IntrospectDBusIface,
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this);
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this._dbusImpl.export(Gio.DBus.session, '/org/gnome/Shell/Introspect');
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Gio.DBus.session.own_name('org.gnome.Shell.Introspect',
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Gio.BusNameOwnerFlags.REPLACE,
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null, null);
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this._runningApplications = {};
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this._runningApplicationsDirty = true;
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this._activeApplication = null;
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this._activeApplicationDirty = true;
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this._appSystem = Shell.AppSystem.get_default();
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this._appSystem.connect('app-state-changed',
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() => {
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this._runningApplicationsDirty = true;
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this._syncRunningApplications();
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});
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this._settings = new Gio.Settings({ schema_id: INTROSPECT_SCHEMA });
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let tracker = Shell.WindowTracker.get_default();
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tracker.connect('notify::focus-app',
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() => {
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this._activeApplicationDirty = true;
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this._syncRunningApplications();
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});
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this._syncRunningApplications();
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},
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_isStandaloneApp(app) {
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let windows = app.get_windows();
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return app.get_windows().some(w => w.transient_for == null);
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},
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_isIntrospectEnabled() {
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return this._settings.get_boolean(INTROSPECT_KEY);
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},
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_isSenderWhitelisted(sender) {
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return APP_WHITELIST.includes(sender);
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},
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_syncRunningApplications() {
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let tracker = Shell.WindowTracker.get_default();
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let apps = this._appSystem.get_running();
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let seatName = "seat0";
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let newRunningApplications = {};
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let newActiveApplication = null;
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let focusedApp = tracker.focus_app;
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for (let app of apps) {
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let appInfo = {};
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let isAppActive = (focusedApp == app);
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if (!this._isStandaloneApp(app))
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continue;
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if (isAppActive) {
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appInfo['active-on-seats'] = new GLib.Variant('as', [seatName]);
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newActiveApplication = app.get_id();
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}
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newRunningApplications[app.get_id()] = appInfo;
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}
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if (this._runningApplicationsDirty ||
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(this._activeApplicationDirty &&
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this._activeApplication != newActiveApplication)) {
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this._runningApplications = newRunningApplications;
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this._activeApplication = newActiveApplication;
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this._dbusImpl.emit_signal('RunningApplicationsChanged', null);
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}
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this._runningApplicationsDirty = false;
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this._activeApplicationDirty = false;
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},
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GetRunningApplicationsAsync(params, invocation) {
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if (!this._isIntrospectEnabled() &&
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!this._isSenderWhitelisted(invocation.get_sender())) {
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invocation.return_error_literal(Gio.DBusError,
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Gio.DBusError.ACCESS_DENIED,
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'App introspection not allowed');
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return;
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}
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invocation.return_value(new GLib.Variant('(a{sa{sv}})', [this._runningApplications]));
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}
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});
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