feat(StatusQ): Added ModelChangeGuard utility to prevent altering models

storybook/src/Models/PermissionsModel.qml

@@ -61,15 +61,36 @@ QtObject {
     ]
 
     readonly property ListModel permissionsModel: ListModel {
-        Component.onCompleted: append(permissionsModelData)
+        readonly property ModelChangeGuard guard: ModelChangeGuard {
+            model: root.permissionsModel
+        }
+
+        Component.onCompleted: {
+            append(permissionsModelData)
+            guard.enabled = true
+        }
     }
 
     readonly property var shortPermissionsModel: ListModel {
-        Component.onCompleted: append(shortPermissionsModelData)
+        readonly property ModelChangeGuard guard: ModelChangeGuard {
+            model: root.shortPermissionsModel
+        }
+
+        Component.onCompleted: {
+            append(shortPermissionsModelData)
+            guard.enabled = true
+        }
     }
 
     readonly property var longPermissionsModel: ListModel {
-        Component.onCompleted: append(longPermissionsModelData)
+        readonly property ModelChangeGuard guard: ModelChangeGuard {
+            model: root.longPermissionsModel
+        }
+
+        Component.onCompleted: {
+            append(longPermissionsModelData)
+            guard.enabled = true
+        }
     }
 
     function createHoldingsModel1() {

ui/StatusQ/src/StatusQ/Core/Utils/ModelChangeGuard.qml

@@ -0,0 +1,9 @@
+import QtQml 2.15
+
+ModelChangeTracker {
+    enabled: false
+
+    onRevisionChanged: {
+        throw new Error("The model is assumed to be immutable.")
+    }
+}

ui/StatusQ/src/StatusQ/Core/Utils/ModelChangeTracker.qml

@@ -1,9 +1,10 @@
-import QtQml 2.14
+import QtQml 2.15
 
 QtObject {
     property var model
 
     readonly property alias revision: d.revision
+    property alias enabled: d.enabled
 
     function reset() {
         d.revision = 0

ui/StatusQ/src/StatusQ/Core/Utils/qmldir

@@ -2,6 +2,7 @@ module StatusQ.Core.Utils
 
 EmojiJSON 1.0 emojiList.js
 JSONListModel 0.1 JSONListModel.qml
+ModelChangeGuard 0.1 ModelChangeGuard.qml
 ModelChangeTracker 0.1 ModelChangeTracker.qml
 ModelsComparator 0.1 ModelsComparator.qml
 XSS 1.0 xss.js