Struct DropdownButton 

pub struct DropdownButton {
    pub open_signal: String,
    pub value_signal: String,
    pub options: Vec<DropdownOptionSpec>,
}

<dropdown> toggle marker attached by the parser to the dropdown header button. Clicks flip Signals[open_signal] between "true" and "false".

Fields

open_signal: String

Internal “is panel open?” signal name (synthesised by the parser as __dropdown_open:<bind-value>).

value_signal: String

Author-bound value signal (<dropdown bind-value>), written by closed-state Up/Down stepping and type-ahead.

options: Vec<DropdownOptionSpec>

Ordered option metadata (see DropdownOptionSpec).

Implementations

impl DropdownButton

pub fn new(open_signal: impl Into<String>) -> Self

Header with an open signal only - no closed-state keyboard metadata. Test fixtures and minimal embedders use this; lumenc always supplies the full option list.

Trait Implementations

impl Clone for DropdownButton

fn clone(&self) -> DropdownButton

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Component for DropdownButton

where Self: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table

A constant indicating the storage type used for this component.

type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have [Component<Mutability = Mutable>], while immutable components will instead have [Component<Mutability = Immutable>].

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn relationship_accessor() -> Option<ComponentRelationshipAccessor<Self>>

Returns [ComponentRelationshipAccessor] required for working with relationships in dynamic contexts.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add [ComponentHook] for this [Component] if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert [ComponentHook] for this [Component] if one is defined.

fn on_discard() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_discard [ComponentHook] for this [Component] if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove [ComponentHook] for this [Component] if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn [ComponentHook] for this [Component] if one is defined.

fn map_entities<E>(_this: &mut Self, _mapper: &mut E)

where E: EntityMapper,

Maps the entities on this component using the given [EntityMapper]. This is used to remap entities in contexts like scenes and entity cloning. When deriving [Component], this is populated by annotating fields containing entities with #[entities]

impl Debug for DropdownButton

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.