Very early KDE 6 release.

plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/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;
+            }
+        }
+    }
+}