Use modules.

imports/Spectral/Menu/RoomContextMenu.qml

@@ -0,0 +1,35 @@
+import QtQuick 2.9
+import QtQuick.Controls 2.2
+import Spectral 0.1
+
+Menu {
+    property var model: null
+
+    id: roomListMenu
+
+    MenuItem {
+        text: "Favourite"
+        checkable: true
+        checked: model && model.category === RoomType.Favorite
+
+        onTriggered: model.category === RoomType.Favorite ? model.currentRoom.removeTag("m.favourite") : model.currentRoom.addTag("m.favourite", "1")
+    }
+    MenuItem {
+        text: "Deprioritize"
+        checkable: true
+        checked: model && model.category === RoomType.Deprioritized
+
+        onTriggered: model.category === RoomType.Deprioritized ? model.currentRoom.removeTag("m.lowpriority") : model.currentRoom.addTag("m.lowpriority", "1")
+    }
+    MenuSeparator {}
+    MenuItem {
+        text: "Mark as Read"
+
+        onTriggered: model.currentRoom.markAllMessagesAsRead()
+    }
+    MenuItem {
+        text: "Leave Room"
+
+        onTriggered: model.currentRoom.forget()
+    }
+}