zng_app::update

Trait UpdateSubscribers

source 
pub trait UpdateSubscribers:
    Send
    + Sync
    + 'static {
    // Required methods
    fn contains(&self, widget_id: WidgetId) -> bool;
    fn to_set(&self) -> IdSet<WidgetId>;
}
Expand description

Represents a set of widgets that subscribe to an event source.

Required Methods§

source

fn contains(&self, widget_id: WidgetId) -> bool

Returns true if the widget is one of the subscribers.

source

fn to_set(&self) -> IdSet<WidgetId>

Gets all subscribers as a set.

Implementors§