notifications: Fix do-not-disturb

The implementation of do-not-disturb broke after the port to our own
notification popups. Since the notification widget is quite deep in the
ActionDrawer, just implement the DBus listening directly in
NotificationsWidget. Also add the missing pulseAudio object in
NotificationPopupProvider to implement notification inhibition.

components/mobileshell/qml/popups/notifications/NotificationPopupProvider.qml

@@ -62,10 +62,15 @@ QtObject {
         }
     }
 
+    // TODO use pulseaudio-qt for this once it becomes a framework
+    property QtObject __pulseAudio: Loader {
+        source: "PulseAudio.qml"
+    }
+
     property bool inhibited: false
 
     onInhibitedChanged: {
-        var pa = pulseAudio.item;
+        var pa = __pulseAudio.item;
         if (!pa) {
             return;
         }

components/mobileshell/qml/popups/notifications/PulseAudio.qml

@@ -0,0 +1,39 @@
+/*
+    SPDX-FileCopyrightText: 2017, 2019 Kai Uwe Broulik <kde@privat.broulik.de>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+*/
+
+import QtQuick 2.2
+
+import org.kde.plasma.private.volume 0.1
+
+QtObject {
+    id: pulseAudio
+
+    readonly property string notificationStreamId: "sink-input-by-media-role:event"
+
+    property QtObject notificationStream
+
+    property QtObject instantiator: Instantiator {
+        model: StreamRestoreModel {}
+
+        delegate: QtObject {
+            readonly property string name: Name
+            readonly property bool muted: Muted
+
+            function mute() {
+                Muted = true
+            }
+            function unmute() {
+                Muted = false
+            }
+        }
+
+        onObjectAdded: (index, object) => {
+            if (object.name === notificationStreamId) {
+                notificationStream = object;
+            }
+        }
+    }
+}

components/mobileshell/qml/widgets/notifications/NotificationsWidget.qml

@@ -15,6 +15,7 @@ import org.kde.kirigami 2.12 as Kirigami
 import org.kde.plasma.plasma5support 2.0 as P5Support
 import org.kde.plasma.private.mobileshell as MobileShell
 import org.kde.plasma.private.mobileshell.shellsettingsplugin as ShellSettings
+import org.kde.plasma.private.mobileshell.state as MobileShellState
 import org.kde.plasma.extras 2.0 as PlasmaExtras
 import org.kde.plasma.components 3.0 as PlasmaComponents3
 
@@ -131,13 +132,12 @@ Item {
         if (doNotDisturbModeEnabled) {
             notificationSettings.defaults();
         } else {
+            // We just have a global toggle, so set it to a really long time (in this case, a year)
             var until = new Date();
-
             until.setFullYear(until.getFullYear() + 1);
 
             notificationSettings.notificationsInhibitedUntil = until;
         }
-
         notificationSettings.save();
     }
 
@@ -148,6 +148,17 @@ Item {
         MobileShell.ShellUtil.executeCommand("plasma-open-settings kcm_notifications");
     }
 
+    // Implement listening to system "do not disturb" requests
+    Connections {
+        target: MobileShellState.ShellDBusClient
+
+        function onDoNotDisturbChanged() {
+            if (root.doNotDisturbModeEnabled !== MobileShellState.ShellDBusClient.doNotDisturb) {
+                root.toggleDoNotDisturbMode();
+            }
+        }
+    }
+
     P5Support.DataSource {
         id: timeDataSource
         engine: "time"

containments/panel/package/contents/ui/main.qml

@@ -118,12 +118,6 @@ ContainmentItem {
         function onCloseActionDrawerRequested() {
             drawer.actionDrawer.close();
         }
-
-        function onDoNotDisturbChanged() {
-            if (drawer.actionDrawer.notificationsWidget.doNotDisturbModeEnabled !== MobileShellState.ShellDBusClient.doNotDisturb) {
-                drawer.actionDrawer.notificationsWidget.toggleDoNotDisturbMode();
-            }
-        }
     }
 
     Binding {