Use modules.

imports/Spectral/Component/Timeline/DownloadableContent.qml

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+import QtQuick 2.9
+import QtQuick.Controls 2.2
+import QtQuick.Controls.Material 2.2
+import Qt.labs.platform 1.0
+
+Item {
+    property bool openOnFinished: false
+    readonly property bool downloaded: progressInfo && progressInfo.completed
+
+    Rectangle {
+        z: -2
+        height: parent.height
+        width: progressInfo.active && !progressInfo.completed ? progressInfo.progress / progressInfo.total * parent.width : 0
+
+        color: Material.accent
+        opacity: 0.4
+    }
+
+    onDownloadedChanged: if (downloaded && openOnFinished) openSavedFile()
+
+    function saveFileAs() { currentRoom.saveFileAs(eventId) }
+
+    function downloadAndOpen()
+    {
+        if (downloaded) openSavedFile()
+        else
+        {
+            openOnFinished = true
+            currentRoom.downloadFile(eventId, StandardPaths.writableLocation(StandardPaths.CacheLocation) + "/" + eventId.replace(":", "_") + ".tmp")
+        }
+    }
+
+    function openSavedFile()
+    {
+        if (Qt.openUrlExternally(progressInfo.localPath)) return;
+        if (Qt.openUrlExternally(progressInfo.localDir)) return;
+    }
+}