Add a reset function to the model notifier

api/node/README.md

@@ -120,6 +120,7 @@ When such an object is set to a model property, it gets a new `notify` object wi
 * `rowDataChanged(index)`: notify the view that the row was changed.
 * `rowAdded(index, count)`: notify the view that rows were added.
 * `rowRemoved(index, count)`: notify the view that a row were removed.
+* `reset()`: notify the view that everything may have changed.
 
 As an example, here is the implementation of the `ArrayModel` (which is available as `slint.ArrayModel`)
 

api/node/lib/index.ts

@@ -120,6 +120,12 @@ interface ModelPeer {
      * @param count
      */
     rowRemoved(row: number, count: number): void;
+
+    /**
+     * Call this function from your own model to notify that the model has been
+     * changed and everything must be reloaded
+     */
+    reset(): void;
 }
 
 /**
@@ -160,6 +166,7 @@ class NullPeer implements ModelPeer {
     rowDataChanged(row: number): void { }
     rowAdded(row: number, count: number): void { }
     rowRemoved(row: number, count: number): void { }
+    reset(): void { }
 }
 
 /**

api/node/native/js_model.rs

@@ -142,6 +142,13 @@ declare_types! {
             }
             Ok(JsUndefined::new().as_value(&mut cx))
         }
+        method reset(mut cx) {
+            let this = cx.this();
+            if let Some(model) = cx.borrow(&this, |x| x.0.upgrade()) {
+                model.notify.reset()
+            }
+            Ok(JsUndefined::new().as_value(&mut cx))
+        }
 
     }