Trait AnyVarSubscribe 

pub trait AnyVarSubscribe {
    // Required method
    fn subscribe(&self, op: UpdateOp, widget_id: WidgetId) -> VarHandle;
}

Extension method to subscribe any widget to a variable.

Also see WIDGET methods for the primary way to subscribe from inside a widget.

Required Methods

fn subscribe(&self, op: UpdateOp, widget_id: WidgetId) -> VarHandle

Register the widget to receive an UpdateOp when this variable is new.

Variables without the NEW capability return VarHandle::dummy.

Implementations on Foreign Types

impl AnyVarSubscribe for AnyVar

fn subscribe(&self, op: UpdateOp, widget_id: WidgetId) -> VarHandle

impl<T: VarValue> AnyVarSubscribe for Var<T>

fn subscribe(&self, op: UpdateOp, widget_id: WidgetId) -> VarHandle

Implementors