Enum Op 

pub enum Op {
    Reset,
    Create {
        id: NodeId,
        kind: String,
        props: Props,
        text: Option<String>,
    },
    CreateText {
        id: NodeId,
        text: String,
    },
    CreateTextSpan {
        id: NodeId,
        text: String,
    },
    Append {
        parent: NodeId,
        child: NodeId,
    },
    Insert {
        parent: NodeId,
        child: NodeId,
        before: NodeId,
    },
    Remove {
        parent: NodeId,
        child: NodeId,
    },
    Update {
        id: NodeId,
        props: Props,
        unset: Vec<String>,
        style_unset: Vec<String>,
    },
    UpdateText {
        id: NodeId,
        text: String,
    },
    Draw {
        id: NodeId,
        cmds: Vec<DrawCmd>,
    },
}

A single mutation produced by the React reconciler during a commit. The reconciler batches a Vec<Op> per commit and flushes it across the boundary in one call.

Variants

Reset

Tear down the entire current tree. Emitted first by every fresh runtime so a hot reload clears the previous UI before the new render is applied.

Create

Spawn a host element (node, button, or image).

Fields

id: NodeId

kind: String

props: Props

text: Option<String>

Inline text content for a single-string <text>/<textSpan> (the shouldSetTextContent fast path — no separate child text entity).

CreateText

Spawn a standalone text node (a bare string outside any <text>).

Fields

id: NodeId

text: String

CreateTextSpan

Spawn a text run inside a <text> element (a Bevy TextSpan). Its style is inherited from the enclosing <text> at append time.

Fields

id: NodeId

text: String

Append

Make child the last child of parent (parent == ROOT_ID is the root).

Fields

parent: NodeId

child: NodeId

Insert

Insert child before before under parent.

Fields

parent: NodeId

child: NodeId

before: NodeId

Remove

Detach and despawn child (and its descendants).

Fields

parent: NodeId

child: NodeId

Update

Apply a prop delta to an existing element, against its last applied props (retained per node in JsBridge::props_cache).

A field present in props is set; a wire name listed in unset is reset to its default (for booleans: set false); a field in neither is left unchanged. props.style is itself a field-level delta: its Some fields overwrite the corresponding fields of the last applied style, and style wire names listed in style_unset are cleared (style_unset applies even when props.style is absent). The variant styles (hoverStyle/pressStyle/focusStyle) and other object-valued props are atomic: present replaces the whole value, unset clears it.

The event-like props (value, selectionStart/selectionEnd, scrollTop/scrollLeft, draw) keep their “present = act now” meaning and are never part of the retained state (see Props::merge_delta).

Fields

id: NodeId

props: Props

unset: Vec<String>

Top-level prop wire names (camelCase) reset to their defaults.

style_unset: Vec<String>

Style field wire names (camelCase) cleared from the merged style. (The enum’s rename_all covers variant names, not their fields, so the wire name is spelled out.)

UpdateText

Replace the string of a text node.

Fields

id: NodeId

text: String

Draw

Append draw commands to a canvas element’s retained surface — the imperative getContext() handle’s microtask flush, or the JS runtime’s clear+replay of a declarative painter after a resize. Paint accumulates on the retained pixels; a leading DrawCmd::Clear makes the batch a replace. Bypasses the props cache entirely (nothing is retained protocol-side). A missing or non-canvas node is skipped silently, like every other op.

Fields

id: NodeId

cmds: Vec<DrawCmd>

Trait Implementations

impl Clone for Op

fn clone(&self) -> Op

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Op

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Op

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.