1 files changed, 198 insertions, 0 deletions
diff --git a/js/ui/sessionMode.js b/js/ui/sessionMode.js
new file mode 100644
index 0000000..2136e94
--- /dev/null
+++ b/js/ui/sessionMode.js
@@ -0,0 +1,198 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported SessionMode, listModes */
+
+const ByteArray = imports.byteArray;
+const GLib = imports.gi.GLib;
+const Signals = imports.signals;
+
+const FileUtils = imports.misc.fileUtils;
+const Params = imports.misc.params;
+
+const Config = imports.misc.config;
+
+const DEFAULT_MODE = 'restrictive';
+
+const _modes = {
+    'restrictive': {
+        parentMode: null,
+        stylesheetName: 'gnome-shell.css',
+        themeResourceName: 'gnome-shell-theme.gresource',
+        hasOverview: false,
+        showCalendarEvents: false,
+        allowSettings: false,
+        allowExtensions: false,
+        allowScreencast: false,
+        enabledExtensions: [],
+        hasRunDialog: false,
+        hasWorkspaces: false,
+        hasWindows: false,
+        hasNotifications: false,
+        hasWmMenus: false,
+        isLocked: false,
+        isGreeter: false,
+        isPrimary: false,
+        unlockDialog: null,
+        components: [],
+        panel: {
+            left: [],
+            center: [],
+            right: [],
+        },
+        panelStyle: null,
+    },
+
+    'gdm': {
+        hasNotifications: true,
+        isGreeter: true,
+        isPrimary: true,
+        unlockDialog: imports.gdm.loginDialog.LoginDialog,
+        components: ['polkitAgent'],
+        panel: {
+            left: [],
+            center: ['dateMenu'],
+            right: ['dwellClick', 'a11y', 'keyboard', 'aggregateMenu'],
+        },
+        panelStyle: 'login-screen',
+    },
+
+    'unlock-dialog': {
+        isLocked: true,
+        unlockDialog: undefined,
+        components: ['polkitAgent', 'telepathyClient'],
+        panel: {
+            left: [],
+            center: [],
+            right: ['dwellClick', 'a11y', 'keyboard', 'aggregateMenu'],
+        },
+        panelStyle: 'unlock-screen',
+    },
+
+    'user': {
+        hasOverview: true,
+        showCalendarEvents: true,
+        allowSettings: true,
+        allowExtensions: true,
+        allowScreencast: true,
+        hasRunDialog: true,
+        hasWorkspaces: true,
+        hasWindows: true,
+        hasWmMenus: true,
+        hasNotifications: true,
+        isLocked: false,
+        isPrimary: true,
+        unlockDialog: imports.ui.unlockDialog.UnlockDialog,
+        components: Config.HAVE_NETWORKMANAGER
+            ? ['networkAgent', 'polkitAgent', 'telepathyClient',
+               'keyring', 'autorunManager', 'automountManager']
+            : ['polkitAgent', 'telepathyClient',
+               'keyring', 'autorunManager', 'automountManager'],
+
+        panel: {
+            left: ['activities', 'appMenu'],
+            center: ['dateMenu'],
+            right: ['dwellClick', 'a11y', 'keyboard', 'aggregateMenu'],
+        },
+    },
+};
+
+function _loadMode(file, info) {
+    let name = info.get_name();
+    let suffix = name.indexOf('.json');
+    let modeName = suffix == -1 ? name : name.slice(name, suffix);
+
+    if (Object.prototype.hasOwnProperty.call(_modes, modeName))
+        return;
+
+    let fileContent, success_, newMode;
+    try {
+        [success_, fileContent] = file.load_contents(null);
+        fileContent = ByteArray.toString(fileContent);
+        newMode = JSON.parse(fileContent);
+    } catch (e) {
+        return;
+    }
+
+    _modes[modeName] = {};
+    const  excludedProps = ['unlockDialog'];
+    for (let prop in _modes[DEFAULT_MODE]) {
+        if (newMode[prop] !== undefined &&
+            !excludedProps.includes(prop))
+            _modes[modeName][prop] = newMode[prop];
+    }
+    _modes[modeName]['isPrimary'] = true;
+}
+
+function _loadModes() {
+    FileUtils.collectFromDatadirs('modes', false, _loadMode);
+}
+
+function listModes() {
+    _loadModes();
+    let loop = new GLib.MainLoop(null, false);
+    let id = GLib.idle_add(GLib.PRIORITY_DEFAULT, () => {
+        let names = Object.getOwnPropertyNames(_modes);
+        for (let i = 0; i < names.length; i++) {
+            if (_modes[names[i]].isPrimary)
+                print(names[i]);
+        }
+        loop.quit();
+    });
+    GLib.Source.set_name_by_id(id, '[gnome-shell] listModes');
+    loop.run();
+}
+
+var SessionMode = class {
+    constructor() {
+        _loadModes();
+        let isPrimary = _modes[global.session_mode] &&
+                         _modes[global.session_mode].isPrimary;
+        let mode = isPrimary ? global.session_mode : 'user';
+        this._modeStack = [mode];
+        this._sync();
+    }
+
+    pushMode(mode) {
+        this._modeStack.push(mode);
+        this._sync();
+    }
+
+    popMode(mode) {
+        if (this.currentMode != mode || this._modeStack.length === 1)
+            throw new Error("Invalid SessionMode.popMode");
+        this._modeStack.pop();
+        this._sync();
+    }
+
+    switchMode(to) {
+        if (this.currentMode == to)
+            return;
+        this._modeStack[this._modeStack.length - 1] = to;
+        this._sync();
+    }
+
+    get currentMode() {
+        return this._modeStack[this._modeStack.length - 1];
+    }
+
+    _sync() {
+        let params = _modes[this.currentMode];
+        let defaults;
+        if (params.parentMode) {
+            defaults = Params.parse(_modes[params.parentMode],
+                                    _modes[DEFAULT_MODE]);
+        } else {
+            defaults = _modes[DEFAULT_MODE];
+        }
+        params = Params.parse(params, defaults);
+
+        // A simplified version of Lang.copyProperties, handles
+        // undefined as a special case for "no change / inherit from previous mode"
+        for (let prop in params) {
+            if (params[prop] !== undefined)
+                this[prop] = params[prop];
+        }
+
+        this.emit('updated');
+    }
+};
+Signals.addSignalMethods(SessionMode.prototype);