1 files changed, 400 insertions, 0 deletions
diff --git a/js/ui/environment.js b/js/ui/environment.js
new file mode 100644
index 0000000..5790aa0
--- /dev/null
+++ b/js/ui/environment.js
@@ -0,0 +1,400 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported init */
+
+const Config = imports.misc.config;
+
+imports.gi.versions.Clutter = Config.LIBMUTTER_API_VERSION;
+imports.gi.versions.Gio = '2.0';
+imports.gi.versions.GdkPixbuf = '2.0';
+imports.gi.versions.Gtk = '3.0';
+imports.gi.versions.Soup = '2.4';
+imports.gi.versions.TelepathyGLib = '0.12';
+imports.gi.versions.TelepathyLogger = '0.2';
+
+const { Clutter, Gio, GLib, GObject, Meta, Polkit, Shell, St } = imports.gi;
+const Gettext = imports.gettext;
+const System = imports.system;
+
+Gio._promisify(Gio.DataInputStream.prototype, 'fill_async', 'fill_finish');
+Gio._promisify(Gio.DataInputStream.prototype,
+    'read_line_async', 'read_line_finish');
+Gio._promisify(Gio.DBus, 'get', 'get_finish');
+Gio._promisify(Gio.DBusConnection.prototype, 'call', 'call_finish');
+Gio._promisify(Gio.DBusProxy, 'new', 'new_finish');
+Gio._promisify(Gio.DBusProxy.prototype, 'init_async', 'init_finish');
+Gio._promisify(Gio.DBusProxy.prototype,
+    'call_with_unix_fd_list', 'call_with_unix_fd_list_finish');
+Gio._promisify(Polkit.Permission, 'new', 'new_finish');
+
+let _localTimeZone = null;
+
+// We can't import shell JS modules yet, because they may have
+// variable initializations, etc, that depend on init() already having
+// been run.
+
+
+// "monkey patch" in some varargs ClutterContainer methods; we need
+// to do this per-container class since there is no representation
+// of interfaces in Javascript
+function _patchContainerClass(containerClass) {
+    // This one is a straightforward mapping of the C method
+    containerClass.prototype.child_set = function (actor, props) {
+        let meta = this.get_child_meta(actor);
+        for (let prop in props)
+            meta[prop] = props[prop];
+    };
+
+    // clutter_container_add() actually is a an add-many-actors
+    // method. We conveniently, but somewhat dubiously, take the
+    // this opportunity to make it do something more useful.
+    containerClass.prototype.add = function (actor, props) {
+        this.add_actor(actor);
+        if (props)
+            this.child_set(actor, props);
+    };
+}
+
+function _patchLayoutClass(layoutClass, styleProps) {
+    if (styleProps) {
+        layoutClass.prototype.hookup_style = function (container) {
+            container.connect('style-changed', () => {
+                let node = container.get_theme_node();
+                for (let prop in styleProps) {
+                    let [found, length] = node.lookup_length(styleProps[prop], false);
+                    if (found)
+                        this[prop] = length;
+                }
+            });
+        };
+    }
+}
+
+function _makeEaseCallback(params, cleanup) {
+    let onComplete = params.onComplete;
+    delete params.onComplete;
+
+    let onStopped = params.onStopped;
+    delete params.onStopped;
+
+    return isFinished => {
+        cleanup();
+
+        if (onStopped)
+            onStopped(isFinished);
+        if (onComplete && isFinished)
+            onComplete();
+    };
+}
+
+function _getPropertyTarget(actor, propName) {
+    if (!propName.startsWith('@'))
+        return [actor, propName];
+
+    let [type, name, prop] = propName.split('.');
+    switch (type) {
+    case '@layout':
+        return [actor.layout_manager, name];
+    case '@actions':
+        return [actor.get_action(name), prop];
+    case '@constraints':
+        return [actor.get_constraint(name), prop];
+    case '@content':
+        return [actor.content, name];
+    case '@effects':
+        return [actor.get_effect(name), prop];
+    }
+
+    throw new Error(`Invalid property name ${propName}`);
+}
+
+function _easeActor(actor, params) {
+    actor.save_easing_state();
+
+    if (params.duration != undefined)
+        actor.set_easing_duration(params.duration);
+    delete params.duration;
+
+    if (params.delay != undefined)
+        actor.set_easing_delay(params.delay);
+    delete params.delay;
+
+    let repeatCount = 0;
+    if (params.repeatCount != undefined)
+        repeatCount = params.repeatCount;
+    delete params.repeatCount;
+
+    let autoReverse = false;
+    if (params.autoReverse != undefined)
+        autoReverse = params.autoReverse;
+    delete params.autoReverse;
+
+    // repeatCount doesn't include the initial iteration
+    const numIterations = repeatCount + 1;
+    // whether the transition should finish where it started
+    const isReversed = autoReverse && numIterations % 2 === 0;
+
+    if (params.mode != undefined)
+        actor.set_easing_mode(params.mode);
+    delete params.mode;
+
+    const prepare = () => {
+        Meta.disable_unredirect_for_display(global.display);
+        global.begin_work();
+    };
+    const cleanup = () => {
+        Meta.enable_unredirect_for_display(global.display);
+        global.end_work();
+    };
+    let callback = _makeEaseCallback(params, cleanup);
+
+    // cancel overwritten transitions
+    let animatedProps = Object.keys(params).map(p => p.replace('_', '-', 'g'));
+    animatedProps.forEach(p => actor.remove_transition(p));
+
+    if (actor.get_easing_duration() > 0 || !isReversed)
+        actor.set(params);
+    actor.restore_easing_state();
+
+    let transition = animatedProps.map(p => actor.get_transition(p))
+        .find(t => t !== null);
+
+    if (transition && transition.delay)
+        transition.connect('started', () => prepare());
+    else
+        prepare();
+
+    if (transition) {
+        transition.set({ repeatCount, autoReverse });
+        transition.connect('stopped', (t, finished) => callback(finished));
+    } else {
+        callback(true);
+    }
+}
+
+function _easeActorProperty(actor, propName, target, params) {
+    // Avoid pointless difference with ease()
+    if (params.mode)
+        params.progress_mode = params.mode;
+    delete params.mode;
+
+    if (params.duration)
+        params.duration = adjustAnimationTime(params.duration);
+    let duration = Math.floor(params.duration || 0);
+
+    let repeatCount = 0;
+    if (params.repeatCount != undefined)
+        repeatCount = params.repeatCount;
+    delete params.repeatCount;
+
+    let autoReverse = false;
+    if (params.autoReverse != undefined)
+        autoReverse = params.autoReverse;
+    delete params.autoReverse;
+
+    // repeatCount doesn't include the initial iteration
+    const numIterations = repeatCount + 1;
+    // whether the transition should finish where it started
+    const isReversed = autoReverse && numIterations % 2 === 0;
+
+    // Copy Clutter's behavior for implicit animations, see
+    // should_skip_implicit_transition()
+    if (actor instanceof Clutter.Actor && !actor.mapped)
+        duration = 0;
+
+    const prepare = () => {
+        Meta.disable_unredirect_for_display(global.display);
+        global.begin_work();
+    };
+    const cleanup = () => {
+        Meta.enable_unredirect_for_display(global.display);
+        global.end_work();
+    };
+    let callback = _makeEaseCallback(params, cleanup);
+
+    // cancel overwritten transition
+    actor.remove_transition(propName);
+
+    if (duration == 0) {
+        let [obj, prop] = _getPropertyTarget(actor, propName);
+
+        if (!isReversed)
+            obj[prop] = target;
+
+        prepare();
+        callback(true);
+
+        return;
+    }
+
+    let pspec = actor.find_property(propName);
+    let transition = new Clutter.PropertyTransition(Object.assign({
+        property_name: propName,
+        interval: new Clutter.Interval({ value_type: pspec.value_type }),
+        remove_on_complete: true,
+        repeat_count: repeatCount,
+        auto_reverse: autoReverse,
+    }, params));
+    actor.add_transition(propName, transition);
+
+    transition.set_to(target);
+
+    if (transition.delay)
+        transition.connect('started', () => prepare());
+    else
+        prepare();
+
+    transition.connect('stopped', (t, finished) => callback(finished));
+}
+
+function _loggingFunc(...args) {
+    let fields = { 'MESSAGE': args.join(', ') };
+    let domain = "GNOME Shell";
+
+    // If the caller is an extension, add it as metadata
+    let extension = imports.misc.extensionUtils.getCurrentExtension();
+    if (extension != null) {
+        domain = extension.metadata.name;
+        fields['GNOME_SHELL_EXTENSION_UUID'] = extension.uuid;
+        fields['GNOME_SHELL_EXTENSION_NAME'] = extension.metadata.name;
+    }
+
+    GLib.log_structured(domain, GLib.LogLevelFlags.LEVEL_MESSAGE, fields);
+}
+
+function init() {
+    // Add some bindings to the global JS namespace
+    globalThis.global = Shell.Global.get();
+
+    globalThis.log = _loggingFunc;
+
+    globalThis._ = Gettext.gettext;
+    globalThis.C_ = Gettext.pgettext;
+    globalThis.ngettext = Gettext.ngettext;
+    globalThis.N_ = s => s;
+
+    GObject.gtypeNameBasedOnJSPath = true;
+
+    // Miscellaneous monkeypatching
+    _patchContainerClass(St.BoxLayout);
+
+    _patchLayoutClass(Clutter.GridLayout, { row_spacing: 'spacing-rows',
+                                            column_spacing: 'spacing-columns' });
+    _patchLayoutClass(Clutter.BoxLayout, { spacing: 'spacing' });
+
+    let origSetEasingDuration = Clutter.Actor.prototype.set_easing_duration;
+    Clutter.Actor.prototype.set_easing_duration = function (msecs) {
+        origSetEasingDuration.call(this, adjustAnimationTime(msecs));
+    };
+    let origSetEasingDelay = Clutter.Actor.prototype.set_easing_delay;
+    Clutter.Actor.prototype.set_easing_delay = function (msecs) {
+        origSetEasingDelay.call(this, adjustAnimationTime(msecs));
+    };
+
+    Clutter.Actor.prototype.ease = function (props) {
+        _easeActor(this, props);
+    };
+    Clutter.Actor.prototype.ease_property = function (propName, target, params) {
+        _easeActorProperty(this, propName, target, params);
+    };
+    St.Adjustment.prototype.ease = function (target, params) {
+        // we're not an actor of course, but we implement the same
+        // transition API as Clutter.Actor, so this works anyway
+        _easeActorProperty(this, 'value', target, params);
+    };
+
+    Clutter.Actor.prototype[Symbol.iterator] = function* () {
+        for (let c = this.get_first_child(); c; c = c.get_next_sibling())
+            yield c;
+    };
+
+    Clutter.Actor.prototype.toString = function () {
+        return St.describe_actor(this);
+    };
+    // Deprecation warning for former JS classes turned into an actor subclass
+    Object.defineProperty(Clutter.Actor.prototype, 'actor', {
+        get() {
+            let klass = this.constructor.name;
+            let { stack } = new Error();
+            log(`Usage of object.actor is deprecated for ${klass}\n${stack}`);
+            return this;
+        },
+    });
+
+    Gio._LocalFilePrototype.touch_async = function (callback) {
+        Shell.util_touch_file_async(this, callback);
+    };
+    Gio._LocalFilePrototype.touch_finish = function (result) {
+        return Shell.util_touch_file_finish(this, result);
+    };
+
+    St.set_slow_down_factor = function (factor) {
+        let { stack } = new Error();
+        log(`St.set_slow_down_factor() is deprecated, use St.Settings.slow_down_factor\n${stack}`);
+        St.Settings.get().slow_down_factor = factor;
+    };
+
+    let origToString = Object.prototype.toString;
+    Object.prototype.toString = function () {
+        let base = origToString.call(this);
+        try {
+            if ('actor' in this && this.actor instanceof Clutter.Actor)
+                return base.replace(/\]$/, ` delegate for ${this.actor.toString().substring(1)}`);
+            else
+                return base;
+        } catch (e) {
+            return base;
+        }
+    };
+
+    // Override to clear our own timezone cache as well
+    const origClearDateCaches = System.clearDateCaches;
+    System.clearDateCaches = function () {
+        _localTimeZone = null;
+        origClearDateCaches();
+    };
+
+    // Work around https://bugzilla.mozilla.org/show_bug.cgi?id=508783
+    Date.prototype.toLocaleFormat = function (format) {
+        if (_localTimeZone === null)
+            _localTimeZone = GLib.TimeZone.new_local();
+
+        let dt = GLib.DateTime.new(_localTimeZone,
+            this.getFullYear(),
+            this.getMonth() + 1,
+            this.getDate(),
+            this.getHours(),
+            this.getMinutes(),
+            this.getSeconds());
+        return dt ? dt.format(format) : '';
+    };
+
+    let slowdownEnv = GLib.getenv('GNOME_SHELL_SLOWDOWN_FACTOR');
+    if (slowdownEnv) {
+        let factor = parseFloat(slowdownEnv);
+        if (!isNaN(factor) && factor > 0.0)
+            St.Settings.get().slow_down_factor = factor;
+    }
+
+    // OK, now things are initialized enough that we can import shell JS
+    const Format = imports.format;
+
+    String.prototype.format = Format.format;
+
+    Math.clamp = function (x, lower, upper) {
+        return Math.min(Math.max(x, lower), upper);
+    };
+}
+
+// adjustAnimationTime:
+// @msecs: time in milliseconds
+//
+// Adjust @msecs to account for St's enable-animations
+// and slow-down-factor settings
+function adjustAnimationTime(msecs) {
+    let settings = St.Settings.get();
+
+    if (!settings.enable_animations)
+        return 1;
+    return settings.slow_down_factor * msecs;
+}
+