Fix quicksettings dropdown changes not being detected

Fixes #176

javascript/_utils.js

@@ -111,6 +111,28 @@ function updateModelName() {
     }
 }
 
+// From https://stackoverflow.com/a/61975440, how to detect JS value changes
+function observeElement(element, property, callback, delay = 0) {
+    let elementPrototype = Object.getPrototypeOf(element);
+    if (elementPrototype.hasOwnProperty(property)) {
+        let descriptor = Object.getOwnPropertyDescriptor(elementPrototype, property);
+        Object.defineProperty(element, property, {
+            get: function() {
+                return descriptor.get.apply(this, arguments);
+            },
+            set: function () {
+                let oldValue = this[property];
+                descriptor.set.apply(this, arguments);
+                let newValue = this[property];
+                if (typeof callback == "function") {
+                    setTimeout(callback.bind(this, oldValue, newValue), delay);
+                }
+                return newValue;
+            }
+        });
+    }
+}
+
 // Queue calling function to process global queues
 async function processQueue(queue, context, ...args) {
     for (let i = 0; i < queue.length; i++) {