Struct UserPresence 

pub struct UserPresence { /* private fields */ }

User presence information for collaborative UI.

Tracks cursor position, selection, and user metadata for rendering remote user cursors.

Implementations

impl UserPresence

pub fn new(user_id: &str, user_name: &str, color: &str) -> Self

Create a new user presence.

Arguments

• user_id - Unique user identifier
• user_name - Display name
• color - Hex color for cursor (e.g., “#FF6B6B”)

pub fn set_cursor(&mut self, position: usize)

Set cursor position (clears selection).

pub fn set_selection(&mut self, start: usize, end: usize)

Set selection range.

pub fn clear(&mut self)

Clear cursor and selection.

pub fn user_id(&self) -> String

Get user ID.

pub fn user_name(&self) -> String

Get user name.

pub fn color(&self) -> String

Get user color.

pub fn cursor(&self) -> Option<usize>

Get cursor position.

pub fn selection_start(&self) -> Option<usize>

Get selection start.

pub fn selection_end(&self) -> Option<usize>

Get selection end.

pub fn has_selection(&self) -> bool

Check if user has a selection (not just cursor).

pub fn to_json(&self) -> Result<JsValue, JsValue>

Serialize to JSON for network transmission.

pub fn from_json(js: JsValue) -> Result<UserPresence, JsValue>

Deserialize from JSON.

Trait Implementations

impl From<UserPresence> for JsValue

fn from(value: UserPresence) -> Self

Converts to this type from the input type.

impl FromWasmAbi for UserPresence

type Abi = u32

The Wasm ABI type that this converts from when coming back out from the ABI boundary.

unsafe fn from_abi(js: u32) -> Self

Recover a Self from Self::Abi.

impl IntoWasmAbi for UserPresence

type Abi = u32

The Wasm ABI type that this converts into when crossing the ABI boundary.

fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.

impl LongRefFromWasmAbi for UserPresence

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RcRef<UserPresence>

Same as RefFromWasmAbi::Anchor

unsafe fn long_ref_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl OptionFromWasmAbi for UserPresence

fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.

impl OptionIntoWasmAbi for UserPresence

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option.

impl RefFromWasmAbi for UserPresence

type Abi = u32

The Wasm ABI type references to Self are recovered from.

type Anchor = RcRef<UserPresence>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous.

unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor

Recover a Self::Anchor from Self::Abi.

impl RefMutFromWasmAbi for UserPresence

type Abi = u32

Same as RefFromWasmAbi::Abi

type Anchor = RcRefMut<UserPresence>

Same as RefFromWasmAbi::Anchor

unsafe fn ref_mut_from_abi(js: Self::Abi) -> Self::Anchor

Same as RefFromWasmAbi::ref_from_abi

impl TryFromJsValue for UserPresence

fn try_from_js_value(value: JsValue) -> Result<Self, JsValue>

Performs the conversion.

fn try_from_js_value_ref(value: &JsValue) -> Option<Self>

Performs the conversion.

impl VectorFromWasmAbi for UserPresence

type Abi = <Box<[JsValue]> as FromWasmAbi>::Abi

unsafe fn vector_from_abi(js: Self::Abi) -> Box<[UserPresence]>

impl VectorIntoWasmAbi for UserPresence

type Abi = <Box<[JsValue]> as IntoWasmAbi>::Abi

fn vector_into_abi(vector: Box<[UserPresence]>) -> Self::Abi

impl WasmDescribe for UserPresence

fn describe()

impl WasmDescribeVector for UserPresence

fn describe_vector()

impl SupportsConstructor for UserPresence

impl SupportsInstanceProperty for UserPresence

impl SupportsStaticProperty for UserPresence