Conditionally display GTK objects in declerative style?

[simvux]

Let's say I have this view

view! {
  gtk::Window {

  }
}

And i want to append a GTK object based on what it's in my model, how would i do it? I'd like to do something similar to this.

view! {
  gtk::Window {
    model.active_box
  }
}

where model.active_box is of type gtk::Box that gets swapped at runtime

or something like

view! {
  gtk::Window {
    match model.active_box {
        This -> gtk::Box {}
        That -> gtk::Box {}
    }
  }
}

where model.active_box is an enum. Coming from Elm, this would feels like the natural way to do things in declerative style.

[antoyo]

Good idea. I wonder if this could be generalized to support loops, but I guess this is where it becomes more complicated and might require a virtual "DOM" which does not seem to be the case for a match.

[simvux]

Ah okay, wasn't sure if this was something that was implemented or not. If anyone's looking to do what the title of this issue describes, check out the "widget-list.rs" example and observe how you can dynamically switch widgets in your update function using the .add_widget and .remove_widget methods.