Enum JsTask 

pub enum JsTask {
    SetDocumentUrl {
        url: String,
    },
    SetOrigin {
        origin: String,
    },
    SetViewport {
        width: f32,
        height: f32,
    },
    SetLanguage {
        language: String,
    },
    SetLayoutMetrics {
        metrics: HashMap<u64, JsLayoutMetrics>,
    },
    RunScript {
        source: String,
    },
    DispatchDomContentLoaded,
    DispatchWindowLoad,
    RunTimers,
    Click {
        dom_id: u64,
    },
    Scroll {
        dom_id: u64,
    },
    DispatchElementEvent {
        dom_id: u64,
        event_type: String,
    },
    ResolveFetch {
        id: u64,
        response: JsFetchResponse,
    },
    RejectFetch {
        id: u64,
        reason: String,
    },
    ResolveDevTools {
        id: u64,
        result: String,
    },
    ResolveIframe {
        dom_id: u64,
        html: String,
    },
    RejectIframe {
        dom_id: u64,
    },
    UpdateDom {
        snapshot: DomSnapshot,
    },
}

What the background JS thread should do next.

Variants

SetDocumentUrl

Set the URL exposed through document and related browser APIs.

Fields

url: String

SetOrigin

Set the serialized origin exposed through window/location/document.

Fields

origin: String

SetViewport

Update CSS-pixel dimensions exposed through the Window API.

Fields

width: f32

height: f32

SetLanguage

Update the language preferences exposed through navigator.

Fields

language: String

SetLayoutMetrics

Replace DOM geometry exposed by measurement APIs.

Fields

metrics: HashMap<u64, JsLayoutMetrics>

RunScript

Execute a classic (blocking or deferred) script.

Fields

source: String

DispatchDomContentLoaded

Dispatch DOMContentLoaded to document listeners.

DispatchWindowLoad

Dispatch the window load event (fires window.onload).

RunTimers

Run timer callbacks whose deadlines have elapsed (coalescable).

Click

Dispatch a click on the element with the given JS-facing dom id.

Fields

dom_id: u64

Scroll

Dispatch a scroll event on the element with the given JS-facing dom id.

Fields

dom_id: u64

DispatchElementEvent

Dispatch an event on the element with the given JS-facing dom id.

Fields

dom_id: u64

event_type: String

ResolveFetch

Resolve a pending JavaScript fetch() with a network response.

Fields

id: u64

response: JsFetchResponse

RejectFetch

Reject a pending JavaScript fetch() after a network failure.

Fields

id: u64

reason: String

ResolveDevTools

Settle a pending DevTools inspection request with its JSON envelope.

Fields

id: u64

result: String

ResolveIframe

Parse fetched iframe HTML and install it as the host element’s contentDocument, then fire its load event.

Fields

dom_id: u64

html: String

RejectIframe

Mark an iframe load as failed so later contentDocument accesses do not keep re-queuing a fetch.

Fields

dom_id: u64

UpdateDom

Replace the JS thread’s mirror DOM with the UI’s tree (write-backs).

Fields

snapshot: DomSnapshot

Trait Implementations

impl Debug for JsTask

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

Formats the value using the given formatter.