Struct Binding 

pub struct Binding<T>
where
    T: 'static + Clone,
{ /* private fields */ }

A binding view that observes a reactive [vizia_reactive] signal and rebuilds its contents whenever the signal value changes.

Binding subscribes to the signal’s reactive graph and is notified immediately when the signal is mutated, even from inside a model’s event handler.

Example

pub struct AppData {
    pub count: Signal<i32>,
}

impl Model for AppData {
    fn event(&mut self, _cx: &mut EventContext, event: &mut Event) {
        event.map(|e, _| match e {
            AppEvent::Increment => self.count.update(|c| *c += 1),
        });
    }
}

// In the view tree:
Binding::new(cx, app_data.count, |cx| {
    Label::new(cx, app_data.count.get(cx).to_string());
});

Implementations

impl<T> Binding<T>

where T: 'static + Clone,

pub fn new<S, F>(cx: &mut Context, signal: S, builder: F)

where S: SignalGet<T> + 'static, F: 'static + Fn(&mut Context),

Creates a new Binding.

• signal — any value implementing SignalGet<T>, typically a Signal<T>.
• builder — closure called immediately and on every subsequent signal change to (re)build child views.