Struct Empty 

pub struct Empty;

An element that draws nothing and takes up no space.

Return it where a view or component must produce an element but has nothing to show. Its layout has display: none, so it doesn’t affect its siblings.

Trait Implementations

impl Element for Empty

type RequestLayoutState = ()

The state that Element::request_layout returns for the later phases.

type PrepaintState = ()

The state that Element::prepaint returns for Element::paint.

fn id(&self) -> Option<ElementId>

Returns the element’s identity, or None if it has none.

fn source_location(&self) -> Option<&'static Location<'static>>

Returns where this element was created, for the inspector and debug output.

fn request_layout( &mut self, _id: Option<&GlobalElementId>, _inspector_id: Option<&InspectorElementId>, window: &mut Window, cx: &mut App, ) -> (LayoutId, Self::RequestLayoutState)

Requests a layout node from Taffy, and returns it with the state the later phases need.

fn prepaint( &mut self, _id: Option<&GlobalElementId>, _inspector_id: Option<&InspectorElementId>, _bounds: Bounds<Pixels>, _state: &mut Self::RequestLayoutState, _window: &mut Window, _cx: &mut App, )

Runs once the element’s bounds are known, and returns the state that paint needs.

fn paint( &mut self, _id: Option<&GlobalElementId>, _inspector_id: Option<&InspectorElementId>, _bounds: Bounds<Pixels>, _request_layout: &mut Self::RequestLayoutState, _prepaint: &mut Self::PrepaintState, _window: &mut Window, _cx: &mut App, )

Draws the element. Runs after prepaint, once per frame.

fn a11y_role(&self) -> Option<Role>

Returns the accessible role for this element, if any. Elements that return None have no accessibility node unless Element::is_a11y_hidden returns true.

fn is_a11y_hidden(&self) -> bool

Whether assistive technology should ignore this element and its descendants.

fn write_a11y_info(&self, _node: &mut Node)

Write accessibility properties to the given node. GPUI calls this only when Element::a11y_role returns Some or Element::is_a11y_hidden returns true.

fn a11y_synthetic_children( &mut self, _prepaint: &mut Self::PrepaintState, _builder: &mut A11ySubtreeBuilder<'_>, )

Add synthetic child nodes to an Element. The element must have an .id(). It must also have a .role() or return true from Element::is_a11y_hidden.

fn into_any(self) -> AnyElement

Convert this element into a dynamically-typed AnyElement.

impl IntoElement for Empty

type Element = Empty

The element type that this type converts into.

fn into_element(self) -> Self::Element

Converts self into an Element.

fn into_any_element(self) -> AnyElement

Converts self into an AnyElement, with its concrete type erased.

impl Render for Empty

fn render( &mut self, _window: &mut Window, _cx: &mut Context<'_, Self>, ) -> impl IntoElement

Builds the view’s element tree from its current state.