Struct LayoutNode 

pub struct LayoutNode {
    pub id: String,
    pub flex_direction: FlexDirection,
    pub size: f32,
    pub children: Vec<LayoutNode>,
    pub data: Option<LayoutNodeData>,
    pub extra: Map<String, Value>,
}

One node in the layout tree. Stable UUID-keyed; size is a relative flex unit; children form the recursive structure (empty for leaves).

JSON shape (matches frontend LayoutNode in frontend/layout/lib/types.ts):

{ "id": "...", "flexDirection": "row", "size": 1, "children": [...], "data": { "blockId": "..." } }

Note: Default::size is 0.0 (Rust f32 default), while the serde deserialization default is 1.0. The Default derive is only for the ..Default::default() spread trick at construction sites — size is always set explicitly in practice.

Fields

id: String

flex_direction: FlexDirection

size: f32

Flex size — relative units within the parent’s children array. Custom serializer emits whole-number sizes as integers (10 not 10.0) to preserve byte-equal compat with prior JSON output.

children: Vec<LayoutNode>

data: Option<LayoutNodeData>

extra: Map<String, Value>

Catch-all for unknown top-level fields. Uses serde_json::Map (insertion-ordered) for deterministic round-trips.

Trait Implementations

impl Clone for LayoutNode

fn clone(&self) -> LayoutNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutNode

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

Formats the value using the given formatter.

impl Default for LayoutNode

fn default() -> LayoutNode

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for LayoutNode

fn deserialize<__D>( __deserializer: __D, ) -> Result<LayoutNode, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for LayoutNode

fn eq(&self, other: &LayoutNode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for LayoutNode

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LayoutNode