Trait rat_widget::event::ConsumedEvent

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pub trait ConsumedEvent {
    // Required method
    fn is_consumed(&self) -> bool;

    // Provided method
    fn or_else<F>(self, f: F) -> Self
       where F: FnOnce() -> Self,
             Self: Sized { ... }
}
Expand description

When composing several widgets, the minimum information from the outcome of the inner widget is, whether it used & consumed the event.

This allows shortcutting the event-handling and prevents double interactions with the event. The inner widget can special case an event, and the fallback behaviour on the outer layer should not run too.

Required Methods§

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fn is_consumed(&self) -> bool

Provided Methods§

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fn or_else<F>(self, f: F) -> Self
where F: FnOnce() -> Self, Self: Sized,

Or-Else chaining with is_consumed() as the split.

Implementations on Foreign Types§

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impl<V> ConsumedEvent for Option<V>
where V: ConsumedEvent,

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fn is_consumed(&self) -> bool

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impl<V, E> ConsumedEvent for Result<V, E>
where V: ConsumedEvent,

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fn is_consumed(&self) -> bool

Implementors§