[gnome-shell/gbsneto/new-lock-screen-part2: 29/56] screenShield: Move notifications to Unlock Dialog

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 5a2959b48585bfb123f25e9909c4f0ad9eda8f22
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Nov 28 18:35:13 2019 -0300

    screenShield: Move notifications to Unlock Dialog
    
    Also adjust the CSS style classes names to match the new owner.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/872

 .../gnome-shell-sass/widgets/_screen-shield.scss   |  16 +-
 js/ui/screenShield.js                              | 274 +--------------------
 js/ui/unlockDialog.js                              | 274 +++++++++++++++++++++
 3 files changed, 284 insertions(+), 280 deletions(-)
---
diff --git a/data/theme/gnome-shell-sass/widgets/_screen-shield.scss 
b/data/theme/gnome-shell-sass/widgets/_screen-shield.scss
index 8401da193f..5654986bc7 100644
--- a/data/theme/gnome-shell-sass/widgets/_screen-shield.scss
+++ b/data/theme/gnome-shell-sass/widgets/_screen-shield.scss
@@ -1,10 +1,10 @@
 /* Screen Shield */
 
-$_screenshield_shadow: 0px 0px 6px rgba(0, 0, 0, 0.726);
+$_unlockdialog_shadow: 0px 0px 6px rgba(0, 0, 0, 0.726);
 
 .unlock-dialog-clock {
   color: white;
-  text-shadow: $_screenshield_shadow;
+  text-shadow: $_unlockdialog_shadow;
   font-weight: bold;
   text-align: center;
   padding-bottom: 1.5em;
@@ -12,7 +12,7 @@ $_screenshield_shadow: 0px 0px 6px rgba(0, 0, 0, 0.726);
 
 .unlock-dialog-clock-time {
   font-size: 72pt;
-  text-shadow: $_screenshield_shadow;
+  text-shadow: $_unlockdialog_shadow;
   font-feature-settings: "tnum";
 }
 
@@ -21,7 +21,7 @@ $_screenshield_shadow: 0px 0px 6px rgba(0, 0, 0, 0.726);
   font-weight: normal;
 }
 
-.screen-shield-notifications-container {
+.unlock-dialog-notifications-container {
   spacing: 6px;
   width: 30em;
   background-color: transparent;
@@ -32,7 +32,7 @@ $_screenshield_shadow: 0px 0px 6px rgba(0, 0, 0, 0.726);
   }
 
   .notification,
-  .screen-shield-notification-source {
+  .unlock-dialog-notification-source {
     padding: 12px 6px;
     border: 1px solid $osd_outer_borders_color;
     background-color: transparentize($osd_bg_color,0.5);
@@ -43,12 +43,12 @@ $_screenshield_shadow: 0px 0px 6px rgba(0, 0, 0, 0.726);
 }
 
 
-.screen-shield-notification-label {
+.unlock-dialog-notification-label {
   font-weight: bold;
   padding: 0px 0px 0px 12px;
 }
 
-.screen-shield-notification-count-text { padding: 0px 0px 0px 12px; }
+.unlock-dialog-notification-count-text { padding: 0px 0px 0px 12px; }
 
 #panel.lock-screen { background-color: transparentize($osd_bg_color, 0.5); }
 
@@ -62,7 +62,7 @@ $_screenshield_shadow: 0px 0px 6px rgba(0, 0, 0, 0.726);
   background-repeat: repeat;
 }
 
-#screenShieldNotifications {
+#unlockDialogdNotifications {
   StButton#vhandle, StButton#hhandle {
     background-color: transparentize($bg_color,0.7);
     &:hover, &:focus { background-color: transparentize($bg_color,0.5); }
diff --git a/js/ui/screenShield.js b/js/ui/screenShield.js
index dc02a63b80..a30d79a9be 100644
--- a/js/ui/screenShield.js
+++ b/js/ui/screenShield.js
@@ -1,7 +1,7 @@
 // -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
 
-const { AccountsService, Clutter, Gio, GLib,
-        GObject, Graphene, Meta, Shell, St } = imports.gi;
+const { AccountsService, Clutter, Gio,
+        GLib, Graphene, Meta, Shell, St } = imports.gi;
 const Signals = imports.signals;
 
 const Background = imports.ui.background;
@@ -30,8 +30,6 @@ const LOCKED_STATE_STR = 'screenShield.locked';
 // the slide up automatically
 var ARROW_DRAG_THRESHOLD = 0.1;
 
-var SUMMARY_ICON_SIZE = 48;
-
 // ScreenShield animation time
 // - STANDARD_FADE_TIME is used when the session goes idle
 // - MANUAL_FADE_TIME is used for lowering the shield when asked by the user,
@@ -41,264 +39,6 @@ var STANDARD_FADE_TIME = 10000;
 var MANUAL_FADE_TIME = 300;
 var CURTAIN_SLIDE_TIME = 300;
 
-var NotificationsBox = GObject.registerClass({
-    Signals: { 'wake-up-screen': {} },
-}, class NotificationsBox extends St.BoxLayout {
-    _init() {
-        super._init({
-            vertical: true,
-            name: 'screenShieldNotifications',
-            style_class: 'screen-shield-notifications-container',
-        });
-
-        this._scrollView = new St.ScrollView({ hscrollbar_policy: St.PolicyType.NEVER });
-        this._notificationBox = new St.BoxLayout({ vertical: true,
-                                                   style_class: 'screen-shield-notifications-container' });
-        this._scrollView.add_actor(this._notificationBox);
-
-        this.add_child(this._scrollView);
-
-        this._sources = new Map();
-        Main.messageTray.getSources().forEach(source => {
-            this._sourceAdded(Main.messageTray, source, true);
-        });
-        this._updateVisibility();
-
-        this._sourceAddedId = Main.messageTray.connect('source-added', this._sourceAdded.bind(this));
-
-        this.connect('destroy', this._onDestroy.bind(this));
-    }
-
-    _onDestroy() {
-        if (this._sourceAddedId) {
-            Main.messageTray.disconnect(this._sourceAddedId);
-            this._sourceAddedId = 0;
-        }
-
-        let items = this._sources.entries();
-        for (let [source, obj] of items)
-            this._removeSource(source, obj);
-    }
-
-    _updateVisibility() {
-        this._notificationBox.visible =
-            this._notificationBox.get_children().some(a => a.visible);
-
-        this.visible = this._notificationBox.visible;
-    }
-
-    _makeNotificationCountText(count, isChat) {
-        if (isChat)
-            return ngettext("%d new message", "%d new messages", count).format(count);
-        else
-            return ngettext("%d new notification", "%d new notifications", count).format(count);
-    }
-
-    _makeNotificationSource(source, box) {
-        let sourceActor = new MessageTray.SourceActor(source, SUMMARY_ICON_SIZE);
-        box.add_child(sourceActor);
-
-        let textBox = new St.BoxLayout({ vertical: true });
-        box.add_child(textBox);
-
-        let title = new St.Label({ text: source.title,
-                                   style_class: 'screen-shield-notification-label' });
-        textBox.add(title);
-
-        let count = source.unseenCount;
-        let countLabel = new St.Label({ text: this._makeNotificationCountText(count, source.isChat),
-                                        style_class: 'screen-shield-notification-count-text' });
-        textBox.add(countLabel);
-
-        box.visible = count != 0;
-        return [title, countLabel];
-    }
-
-    _makeNotificationDetailedSource(source, box) {
-        let sourceActor = new MessageTray.SourceActor(source, SUMMARY_ICON_SIZE);
-        let sourceBin = new St.Bin({ child: sourceActor });
-        box.add(sourceBin);
-
-        let textBox = new St.BoxLayout({ vertical: true });
-        box.add_child(textBox);
-
-        let title = new St.Label({ text: source.title,
-                                   style_class: 'screen-shield-notification-label' });
-        textBox.add(title);
-
-        let visible = false;
-        for (let i = 0; i < source.notifications.length; i++) {
-            let n = source.notifications[i];
-
-            if (n.acknowledged)
-                continue;
-
-            let body = '';
-            if (n.bannerBodyText) {
-                body = n.bannerBodyMarkup
-                    ? n.bannerBodyText
-                    : GLib.markup_escape_text(n.bannerBodyText, -1);
-            }
-
-            let label = new St.Label({ style_class: 'screen-shield-notification-count-text' });
-            label.clutter_text.set_markup(`<b>${n.title}</b> ${body}`);
-            textBox.add(label);
-
-            visible = true;
-        }
-
-        box.visible = visible;
-        return [title, null];
-    }
-
-    _shouldShowDetails(source) {
-        return source.policy.detailsInLockScreen ||
-               source.narrowestPrivacyScope == MessageTray.PrivacyScope.SYSTEM;
-    }
-
-    _showSource(source, obj, box) {
-        if (obj.detailed)
-            [obj.titleLabel, obj.countLabel] = this._makeNotificationDetailedSource(source, box);
-        else
-            [obj.titleLabel, obj.countLabel] = this._makeNotificationSource(source, box);
-
-        box.visible = obj.visible && (source.unseenCount > 0);
-    }
-
-    _sourceAdded(tray, source, initial) {
-        let obj = {
-            visible: source.policy.showInLockScreen,
-            detailed: this._shouldShowDetails(source),
-            sourceDestroyId: 0,
-            sourceCountChangedId: 0,
-            sourceTitleChangedId: 0,
-            sourceUpdatedId: 0,
-            sourceBox: null,
-            titleLabel: null,
-            countLabel: null,
-        };
-
-        obj.sourceBox = new St.BoxLayout({ style_class: 'screen-shield-notification-source',
-                                           x_expand: true });
-        this._showSource(source, obj, obj.sourceBox);
-        this._notificationBox.add_child(obj.sourceBox);
-
-        obj.sourceCountChangedId = source.connect('notify::count', () => {
-            this._countChanged(source, obj);
-        });
-        obj.sourceTitleChangedId = source.connect('notify::title', () => {
-            this._titleChanged(source, obj);
-        });
-        obj.policyChangedId = source.policy.connect('notify', (policy, pspec) => {
-            if (pspec.name == 'show-in-lock-screen')
-                this._visibleChanged(source, obj);
-            else
-                this._detailedChanged(source, obj);
-        });
-        obj.sourceDestroyId = source.connect('destroy', () => {
-            this._onSourceDestroy(source, obj);
-        });
-
-        this._sources.set(source, obj);
-
-        if (!initial) {
-            // block scrollbars while animating, if they're not needed now
-            let boxHeight = this._notificationBox.height;
-            if (this._scrollView.height >= boxHeight)
-                this._scrollView.vscrollbar_policy = St.PolicyType.NEVER;
-
-            let widget = obj.sourceBox;
-            let [, natHeight] = widget.get_preferred_height(-1);
-            widget.height = 0;
-            widget.ease({
-                height: natHeight,
-                mode: Clutter.AnimationMode.EASE_OUT_QUAD,
-                duration: 250,
-                onComplete: () => {
-                    this._scrollView.vscrollbar_policy = St.PolicyType.AUTOMATIC;
-                    widget.set_height(-1);
-                },
-            });
-
-            this._updateVisibility();
-            if (obj.sourceBox.visible)
-                this.emit('wake-up-screen');
-        }
-    }
-
-    _titleChanged(source, obj) {
-        obj.titleLabel.text = source.title;
-    }
-
-    _countChanged(source, obj) {
-        // A change in the number of notifications may change whether we show
-        // details.
-        let newDetailed = this._shouldShowDetails(source);
-        let oldDetailed = obj.detailed;
-
-        obj.detailed = newDetailed;
-
-        if (obj.detailed || oldDetailed != newDetailed) {
-            // A new notification was pushed, or a previous notification was destroyed.
-            // Give up, and build the list again.
-
-            obj.sourceBox.destroy_all_children();
-            obj.titleLabel = obj.countLabel = null;
-            this._showSource(source, obj, obj.sourceBox);
-        } else {
-            let count = source.unseenCount;
-            obj.countLabel.text = this._makeNotificationCountText(count, source.isChat);
-        }
-
-        obj.sourceBox.visible = obj.visible && (source.unseenCount > 0);
-
-        this._updateVisibility();
-        if (obj.sourceBox.visible)
-            this.emit('wake-up-screen');
-    }
-
-    _visibleChanged(source, obj) {
-        if (obj.visible == source.policy.showInLockScreen)
-            return;
-
-        obj.visible = source.policy.showInLockScreen;
-        obj.sourceBox.visible = obj.visible && source.unseenCount > 0;
-
-        this._updateVisibility();
-        if (obj.sourceBox.visible)
-            this.emit('wake-up-screen');
-    }
-
-    _detailedChanged(source, obj) {
-        let newDetailed = this._shouldShowDetails(source);
-        if (obj.detailed == newDetailed)
-            return;
-
-        obj.detailed = newDetailed;
-
-        obj.sourceBox.destroy_all_children();
-        obj.titleLabel = obj.countLabel = null;
-        this._showSource(source, obj, obj.sourceBox);
-    }
-
-    _onSourceDestroy(source, obj) {
-        this._removeSource(source, obj);
-        this._updateVisibility();
-    }
-
-    _removeSource(source, obj) {
-        obj.sourceBox.destroy();
-        obj.sourceBox = obj.titleLabel = obj.countLabel = null;
-
-        source.disconnect(obj.sourceDestroyId);
-        source.disconnect(obj.sourceCountChangedId);
-        source.disconnect(obj.sourceTitleChangedId);
-        source.policy.disconnect(obj.policyChangedId);
-
-        this._sources.delete(source);
-    }
-});
-
 function clamp(value, min, max) {
     return Math.max(min, Math.min(max, value));
 }
@@ -928,10 +668,6 @@ var ScreenShield = class {
 
         this._lockScreenContents.add_actor(this._lockScreenContentsBox);
 
-        this._notificationsBox = new NotificationsBox();
-        this._wakeUpScreenId = this._notificationsBox.connect('wake-up-screen', 
this._wakeUpScreen.bind(this));
-        this._lockScreenContentsBox.add_child(this._notificationsBox);
-
         this._hasLockScreen = true;
     }
 
@@ -941,12 +677,6 @@ var ScreenShield = class {
     }
 
     _clearLockScreen() {
-        if (this._notificationsBox) {
-            this._notificationsBox.disconnect(this._wakeUpScreenId);
-            this._notificationsBox.destroy();
-            this._notificationsBox = null;
-        }
-
         this._lockScreenContentsBox.destroy();
 
         this._hasLockScreen = false;
diff --git a/js/ui/unlockDialog.js b/js/ui/unlockDialog.js
index 846a888074..82a31bd905 100644
--- a/js/ui/unlockDialog.js
+++ b/js/ui/unlockDialog.js
@@ -6,12 +6,273 @@ const { AccountsService, Atk, Clutter, Gdm, Gio,
 
 const Layout = imports.ui.layout;
 const Main = imports.ui.main;
+const MessageTray = imports.ui.messageTray;
 
 const AuthPrompt = imports.gdm.authPrompt;
 
 // The timeout before going back automatically to the lock screen (in seconds)
 const IDLE_TIMEOUT = 2 * 60;
 
+const SUMMARY_ICON_SIZE = 48;
+
+var NotificationsBox = GObject.registerClass({
+    Signals: { 'wake-up-screen': {} },
+}, class NotificationsBox extends St.BoxLayout {
+    _init() {
+        super._init({
+            vertical: true,
+            name: 'unlockDialogNotifications',
+            style_class: 'unlock-dialog-notifications-container',
+        });
+
+        this._scrollView = new St.ScrollView({ hscrollbar_policy: St.PolicyType.NEVER });
+        this._notificationBox = new St.BoxLayout({ vertical: true,
+                                                   style_class: 'unlock-dialog-notifications-container' });
+        this._scrollView.add_actor(this._notificationBox);
+
+        this.add_child(this._scrollView);
+
+        this._sources = new Map();
+        Main.messageTray.getSources().forEach(source => {
+            this._sourceAdded(Main.messageTray, source, true);
+        });
+        this._updateVisibility();
+
+        this._sourceAddedId = Main.messageTray.connect('source-added', this._sourceAdded.bind(this));
+
+        this.connect('destroy', this._onDestroy.bind(this));
+    }
+
+    _onDestroy() {
+        if (this._sourceAddedId) {
+            Main.messageTray.disconnect(this._sourceAddedId);
+            this._sourceAddedId = 0;
+        }
+
+        let items = this._sources.entries();
+        for (let [source, obj] of items)
+            this._removeSource(source, obj);
+    }
+
+    _updateVisibility() {
+        this._notificationBox.visible =
+            this._notificationBox.get_children().some(a => a.visible);
+
+        this.visible = this._notificationBox.visible;
+    }
+
+    _makeNotificationCountText(count, isChat) {
+        if (isChat)
+            return ngettext("%d new message", "%d new messages", count).format(count);
+        else
+            return ngettext("%d new notification", "%d new notifications", count).format(count);
+    }
+
+    _makeNotificationSource(source, box) {
+        let sourceActor = new MessageTray.SourceActor(source, SUMMARY_ICON_SIZE);
+        box.add_child(sourceActor);
+
+        let textBox = new St.BoxLayout({ vertical: true });
+        box.add_child(textBox);
+
+        let title = new St.Label({ text: source.title,
+                                   style_class: 'unlock-dialog-notification-label' });
+        textBox.add(title);
+
+        let count = source.unseenCount;
+        let countLabel = new St.Label({ text: this._makeNotificationCountText(count, source.isChat),
+                                        style_class: 'unlock-dialog-notification-count-text' });
+        textBox.add(countLabel);
+
+        box.visible = count != 0;
+        return [title, countLabel];
+    }
+
+    _makeNotificationDetailedSource(source, box) {
+        let sourceActor = new MessageTray.SourceActor(source, SUMMARY_ICON_SIZE);
+        let sourceBin = new St.Bin({ child: sourceActor });
+        box.add(sourceBin);
+
+        let textBox = new St.BoxLayout({ vertical: true });
+        box.add_child(textBox);
+
+        let title = new St.Label({ text: source.title,
+                                   style_class: 'unlock-dialog-notification-label' });
+        textBox.add(title);
+
+        let visible = false;
+        for (let i = 0; i < source.notifications.length; i++) {
+            let n = source.notifications[i];
+
+            if (n.acknowledged)
+                continue;
+
+            let body = '';
+            if (n.bannerBodyText) {
+                body = n.bannerBodyMarkup
+                    ? n.bannerBodyText
+                    : GLib.markup_escape_text(n.bannerBodyText, -1);
+            }
+
+            let label = new St.Label({ style_class: 'unlock-dialog-notification-count-text' });
+            label.clutter_text.set_markup(`<b>${n.title}</b> ${body}`);
+            textBox.add(label);
+
+            visible = true;
+        }
+
+        box.visible = visible;
+        return [title, null];
+    }
+
+    _shouldShowDetails(source) {
+        return source.policy.detailsInLockScreen ||
+               source.narrowestPrivacyScope == MessageTray.PrivacyScope.SYSTEM;
+    }
+
+    _showSource(source, obj, box) {
+        if (obj.detailed)
+            [obj.titleLabel, obj.countLabel] = this._makeNotificationDetailedSource(source, box);
+        else
+            [obj.titleLabel, obj.countLabel] = this._makeNotificationSource(source, box);
+
+        box.visible = obj.visible && (source.unseenCount > 0);
+    }
+
+    _sourceAdded(tray, source, initial) {
+        let obj = {
+            visible: source.policy.showInLockScreen,
+            detailed: this._shouldShowDetails(source),
+            sourceDestroyId: 0,
+            sourceCountChangedId: 0,
+            sourceTitleChangedId: 0,
+            sourceUpdatedId: 0,
+            sourceBox: null,
+            titleLabel: null,
+            countLabel: null,
+        };
+
+        obj.sourceBox = new St.BoxLayout({ style_class: 'unlock-dialog-notification-source',
+                                           x_expand: true });
+        this._showSource(source, obj, obj.sourceBox);
+        this._notificationBox.add_child(obj.sourceBox);
+
+        obj.sourceCountChangedId = source.connect('notify::count', () => {
+            this._countChanged(source, obj);
+        });
+        obj.sourceTitleChangedId = source.connect('notify::title', () => {
+            this._titleChanged(source, obj);
+        });
+        obj.policyChangedId = source.policy.connect('notify', (policy, pspec) => {
+            if (pspec.name == 'show-in-lock-screen')
+                this._visibleChanged(source, obj);
+            else
+                this._detailedChanged(source, obj);
+        });
+        obj.sourceDestroyId = source.connect('destroy', () => {
+            this._onSourceDestroy(source, obj);
+        });
+
+        this._sources.set(source, obj);
+
+        if (!initial) {
+            // block scrollbars while animating, if they're not needed now
+            let boxHeight = this._notificationBox.height;
+            if (this._scrollView.height >= boxHeight)
+                this._scrollView.vscrollbar_policy = St.PolicyType.NEVER;
+
+            let widget = obj.sourceBox;
+            let [, natHeight] = widget.get_preferred_height(-1);
+            widget.height = 0;
+            widget.ease({
+                height: natHeight,
+                mode: Clutter.AnimationMode.EASE_OUT_QUAD,
+                duration: 250,
+                onComplete: () => {
+                    this._scrollView.vscrollbar_policy = St.PolicyType.AUTOMATIC;
+                    widget.set_height(-1);
+                },
+            });
+
+            this._updateVisibility();
+            if (obj.sourceBox.visible)
+                this.emit('wake-up-screen');
+        }
+    }
+
+    _titleChanged(source, obj) {
+        obj.titleLabel.text = source.title;
+    }
+
+    _countChanged(source, obj) {
+        // A change in the number of notifications may change whether we show
+        // details.
+        let newDetailed = this._shouldShowDetails(source);
+        let oldDetailed = obj.detailed;
+
+        obj.detailed = newDetailed;
+
+        if (obj.detailed || oldDetailed != newDetailed) {
+            // A new notification was pushed, or a previous notification was destroyed.
+            // Give up, and build the list again.
+
+            obj.sourceBox.destroy_all_children();
+            obj.titleLabel = obj.countLabel = null;
+            this._showSource(source, obj, obj.sourceBox);
+        } else {
+            let count = source.unseenCount;
+            obj.countLabel.text = this._makeNotificationCountText(count, source.isChat);
+        }
+
+        obj.sourceBox.visible = obj.visible && (source.unseenCount > 0);
+
+        this._updateVisibility();
+        if (obj.sourceBox.visible)
+            this.emit('wake-up-screen');
+    }
+
+    _visibleChanged(source, obj) {
+        if (obj.visible == source.policy.showInLockScreen)
+            return;
+
+        obj.visible = source.policy.showInLockScreen;
+        obj.sourceBox.visible = obj.visible && source.unseenCount > 0;
+
+        this._updateVisibility();
+        if (obj.sourceBox.visible)
+            this.emit('wake-up-screen');
+    }
+
+    _detailedChanged(source, obj) {
+        let newDetailed = this._shouldShowDetails(source);
+        if (obj.detailed == newDetailed)
+            return;
+
+        obj.detailed = newDetailed;
+
+        obj.sourceBox.destroy_all_children();
+        obj.titleLabel = obj.countLabel = null;
+        this._showSource(source, obj, obj.sourceBox);
+    }
+
+    _onSourceDestroy(source, obj) {
+        this._removeSource(source, obj);
+        this._updateVisibility();
+    }
+
+    _removeSource(source, obj) {
+        obj.sourceBox.destroy();
+        obj.sourceBox = obj.titleLabel = obj.countLabel = null;
+
+        source.disconnect(obj.sourceDestroyId);
+        source.disconnect(obj.sourceCountChangedId);
+        source.disconnect(obj.sourceTitleChangedId);
+        source.policy.disconnect(obj.policyChangedId);
+
+        this._sources.delete(source);
+    }
+});
+
 var Clock = GObject.registerClass(
 class UnlockDialogClock extends St.BoxLayout {
     _init() {
@@ -112,6 +373,13 @@ var UnlockDialog = GObject.registerClass({
 
         Main.ctrlAltTabManager.addGroup(this, _("Unlock Window"), 'dialog-password-symbolic');
 
+        // Notifications
+        this._notificationsBox = new NotificationsBox();
+        this._wakeUpScreenId = this._notificationsBox.connect('wake-up-screen', () => {
+            this.emit('wake-up-screen');
+        });
+        this._promptBox.add_child(this._notificationsBox);
+
         this._idleMonitor = Meta.IdleMonitor.get_core();
         this._idleWatchId = this._idleMonitor.add_idle_watch(IDLE_TIMEOUT * 1000, this._escape.bind(this));
 
@@ -160,6 +428,12 @@ var UnlockDialog = GObject.registerClass({
             this._clock = null;
         }
 
+        if (this._notificationsBox) {
+            this._notificationsBox.disconnect(this._wakeUpScreenId);
+            this._notificationsBox.destroy();
+            this._notificationsBox = null;
+        }
+
         this.popModal();
 
         if (this._idleWatchId) {