MediaGrid | distributed wireless infrastructure allowing citizens

I created a react app using the following:

create-react-app my-app --scripts-version=react-scripts-ts

From following this example: https://github.com/wmonk/create-react-app-typescript

I tried adding:

I am developing an UWP Application which shows Images and Videos in a FlipView control. The Flipview control is put aside an AdaptiveGridView from the UWP Community Toolkit which shows all available Images/Videos for the FlipView. The FlipView and the AdaptiveGridView share the same ItemsSource and SelectedItem. So when i select one photo in the AdaptiveGridView the FlipView shows that item and the other way around. The photo/video collection can be very large (>500 images).

The following code only hits the load logic once per element, but the load event keeps firing previous load calls?

It loads a dynamic url for each unique element. My results are similar to this

I'm trying to understand how ZKoss works, in particolar using the MVVM pattern.

I'm using ZK8.0.2.2 CE on JDK8 and wildfly 10.

I have a combobox and a Grid. I want the combobox onSelect event to trigger the Grid update. The grid is updated with the selected item from the combobox as parameter.

Problem is, the @Command method that is supposed to be called by onSelect is never called and the update is never triggered.

And another thing: if I got how data binding works right, the onSelect argument on the Combobox shouldn't even be necessary. The Grid is bound to a ListModel in the ViewModel (allMedia) by the argument model="@load(vm.allMedia)"

So if allMedia changes, the grid should update automatically (similarly to what happens in JavaFX with bound properties). Obviously this is not happening.

This is the .zul file: