Enum IncomingMessage 

pub enum IncomingMessage {
    Snapshot {
        tree: TreeNode,
    },
    Patch {
        ops: Vec<PatchOp>,
    },
    Effect {
        id: String,
        kind: String,
        payload: Value,
    },
    WidgetOp {
        op: String,
        payload: Value,
    },
    Subscribe {
        kind: String,
        tag: String,
    },
    Unsubscribe {
        kind: String,
    },
    WindowOp {
        op: String,
        window_id: String,
        settings: Value,
    },
    Settings {
        settings: Value,
    },
    Query {
        id: String,
        target: String,
        selector: Value,
    },
    Interact {
        id: String,
        action: String,
        selector: Value,
        payload: Value,
    },
    TreeHash {
        id: String,
        name: String,
    },
    Screenshot {
        id: String,
        name: String,
        width: Option<u32>,
        height: Option<u32>,
    },
    Reset {
        id: String,
    },
    ImageOp {
        op: String,
        handle: String,
        data: Option<Vec<u8>>,
        pixels: Option<Vec<u8>>,
        width: Option<u32>,
        height: Option<u32>,
    },
    ExtensionCommand {
        node_id: String,
        op: String,
        payload: Value,
    },
    ExtensionCommands {
        commands: Vec<ExtensionCommandItem>,
    },
    AdvanceFrame {
        timestamp: u64,
    },
}

Messages sent from the host to the renderer over stdin.

Variants

Snapshot

Replace the entire UI tree with a new snapshot.

Fields

tree: TreeNode

Patch

Apply incremental changes to the retained UI tree.

Fields

ops: Vec<PatchOp>

Effect

Request a platform effect (file dialog, clipboard, notification).

Fields

id: String

kind: String

payload: Value

WidgetOp

Perform a widget operation (focus, scroll, select, etc.).

Fields

op: String

payload: Value

Subscribe

Subscribe to a runtime event source (keyboard, mouse, window, etc.).

Fields

kind: String

tag: String

Unsubscribe

Unsubscribe from a runtime event source.

Fields

kind: String

WindowOp

Perform a window operation (resize, move, close, etc.).

Fields

op: String

window_id: String

settings: Value

Settings

Apply or update renderer settings.

Fields

settings: Value

Query

Query the current tree or find a widget.

Fields

id: String

target: String

selector: Value

Interact

Interact with a widget (click, type, etc.)

Fields

id: String

action: String

selector: Value

payload: Value

TreeHash

Capture a structural tree hash (hash of JSON tree).

Fields

id: String

name: String

Screenshot

Capture a pixel screenshot (GPU-rendered RGBA data).

Fields

id: String

name: String

width: Option<u32>

height: Option<u32>

Reset

Reset the app state.

Fields

id: String

ImageOp

Image operation (create, update, delete in-memory image handles).

Binary fields (data, pixels) accept either raw bytes (from msgpack) or base64-encoded strings (from JSON). The custom deserializer handles both.

Fields

op: String

handle: String

data: Option<Vec<u8>>

pixels: Option<Vec<u8>>

width: Option<u32>

height: Option<u32>

ExtensionCommand

A single extension command pushed to a native extension widget. Bypasses the normal tree update / diff / patch cycle.

Fields

node_id: String

op: String

payload: Value

ExtensionCommands

A batch of extension commands processed in one cycle.

Fields

commands: Vec<ExtensionCommandItem>

AdvanceFrame

Advance the animation clock by one frame (headless/test mode). Emits an animation_frame event if on_animation_frame is subscribed.

Fields

timestamp: u64

Trait Implementations

impl Clone for IncomingMessage

fn clone(&self) -> IncomingMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IncomingMessage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for IncomingMessage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.