Use modules.

imports/Spectral/Menu/MessageContextMenu.qml

@@ -0,0 +1,62 @@
+import QtQuick 2.9
+import QtQuick.Controls 2.2
+
+Menu {
+    property var row: null
+    property var model: null
+    property string selectedText
+
+    readonly property bool isFile: model  && (model.eventType === "video" || model.eventType === "audio" || model.eventType === "file" || model.eventType === "image")
+
+    id: messageContextMenu
+
+    MenuItem {
+        text: "View Source"
+
+        onTriggered: {
+            sourceDialog.sourceText = model.toolTip
+            sourceDialog.open()
+        }
+    }
+    MenuItem {
+        visible: model && model.userMarker.length > 0
+        height: visible ? undefined : 0
+        text: "View Receipts"
+
+        onTriggered: {
+            readMarkerDialog.listModel = model.userMarker
+            readMarkerDialog.open()
+        }
+    }
+    MenuItem {
+        visible: isFile
+        height: visible ? undefined : 0
+        text: "Open Externally"
+
+        onTriggered: row.openExternally()
+    }
+    MenuItem {
+        visible: isFile
+        height: visible ? undefined : 0
+        text: "Save As"
+
+        onTriggered: row.saveFileAs()
+    }
+    MenuItem {
+        visible: model && model.author !== currentRoom.localUser
+        height: visible ? undefined : 0
+        text: "Reply"
+
+        onTriggered: {
+            inputField.clear()
+            inputField.insert(0, "> <" + model.author.id + "><" + model.eventId + "> " + (selectedText != "" ? selectedText : model.message) + "\n\n")
+        }
+    }
+    MenuItem {
+        visible: model && model.author === currentRoom.localUser
+        height: visible ? undefined : 0
+        text: "Redact"
+
+        onTriggered: currentRoom.redactEvent(model.eventId)
+    }
+}

imports/Spectral/Menu/RoomContextMenu.qml

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+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()
+    }
+}

imports/Spectral/Menu/qmldir

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+module Spectral.Menu
+MessageContextMenu 2.0 MessageContextMenu.qml
+RoomContextMenu 2.0 RoomContextMenu.qml
+