Struct BindingCall 

pub struct BindingCall { /* private fields */ }

BindingCall represents a single JS → Rust callback invocation.

When JavaScript calls an exposed function (registered via expose_function or expose_binding), the server sends a bindingCall event on the BrowserContext channel containing the GUID of a freshly created BindingCall object. The Rust handler must call either resolve or reject to unblock the JS caller.

See: https://playwright.dev/docs/api/class-browsercontext#browser-context-expose-function

Implementations

impl BindingCall

pub fn new( parent: Arc<dyn ChannelOwner>, type_name: String, guid: Arc<str>, initializer: Value, ) -> Result<Self>

Creates a new BindingCall from protocol initialization.

Called by the object factory when the server sends a __create__ message for a BindingCall object.

pub fn name(&self) -> &str

Returns the name of the binding that was called.

Matches the name argument passed to expose_function / expose_binding.

pub fn args(&self) -> &Value

Returns the raw serialized arguments sent by the JS caller.

This is the args array from the initializer, in Playwright’s type-tagged protocol format (e.g. [{"n": 3}, {"n": 7}]).

pub async fn resolve(&self, result: Value) -> Result<()>

Resolves the binding call with a result value.

Sends the resolve RPC back to the Playwright server so the JS await of the exposed function resolves with result.

Arguments

• result - The value to return to the JavaScript caller, already serialized in Playwright’s serialize_argument format ({"value": ..., "handles": []}).

Errors

Returns error if communication with the browser process fails.

pub async fn reject(&self, message: &str) -> Result<()>

Rejects the binding call with an error.

Sends the reject RPC so the JS await of the exposed function rejects with the given error message.

Arguments

• message - Human-readable error description sent to the JS caller.

Errors

Returns error if communication with the browser process fails.

Trait Implementations

impl Clone for BindingCall

fn clone(&self) -> BindingCall

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BindingCall

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

Formats the value using the given formatter.