zng::widget::node

Struct WidgetUiNode

pub struct WidgetUiNode<'u>(/* private fields */);

Expand description

Extra UiNode methods for nodes that define a widget instance context.

See UiNode::as_widget for more details.

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impl<'u> WidgetUiNode<'u>

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pub fn with_context<R>( &mut self, update_mode: WidgetUpdateMode, visitor: impl FnOnce() -> R, ) -> R

Calls visitor with the WIDGET context of the widget instance defined by the node.

If update_mode is WidgetUpdateMode::Bubble the update flags requested for the widget in visitor will be copied to the caller widget context, otherwise they are ignored.

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pub fn id(&mut self) -> WidgetId

Gets the widget instance ID.

Auto Trait Implementations§

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impl<'u> !UnwindSafe for WidgetUiNode<'u>

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

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fn instrument(self, span: Span) -> Instrumented<Self>

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fn in_current_span(self) -> Instrumented<Self>

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