Window

Generated from idl/html.webidl when the site was built at 7aa23e2.

Window is an interface in idl/html.webidl, inheriting EventTarget, exposed in Window. It includes WindowOrWorkerGlobalScope, AnimationFrameProvider, GlobalEventHandlers, WindowEventHandlers. What it does is on MDN; this page says what niso has of it.

Status

The web features its members belong to, each with its Baseline status on the web and how much of the feature’s WPT suite passes in niso (see Web platform support).

Feature	On the web	In niso	Members
Window	Widely available	Partial 13% 139 of 1002 subtests pass	9
Scroll methods on elements	Widely available	Partial 49% 340 of 689 subtests pass	4
localStorage and sessionStorage	Widely available	Partial 95% 1239 of 1291 subtests pass	3
History	Widely available	Partial 18% 55 of 304 subtests pass	2
requestAnimationFrame()	Widely available	Partial 93% 15 of 16 subtests pass	2
Print events	Widely available	Not run its tests are manual	2
Online status	Widely available	Not yet 0 of 3 subtests pass	2
Page transition events	Widely available	No WPT tests WPT maps no test to it	2
View transitions	Newly available	Partial 1.0% 1 of 98 subtests pass	2
DOM	Widely available	No WPT tests WPT maps no test to it	1
devicePixelRatio	Limited availability	No WPT tests WPT maps no test to it	1
getComputedStyle()	Widely available	Partial 31% 29 of 91 subtests pass	1
Location	Widely available	Partial 11% 33 of 287 subtests pass	1
Autonomous custom elements	Widely available	Partial 80% 2410 of 3010 subtests pass	1
matchMedia	Widely available	Partial 40% 43 of 106 subtests pass	1
beforeunload	Limited availability	Not run its tests are not-in-suite	1
hashchange	Widely available	Partial 47% 10 of 21 subtests pass	1
Language	Widely available	Full 2 of 2 subtests pass	1
postMessage	Widely available	Partial 70% 309 of 441 subtests pass	1
messageerror	Widely available	Partial 75% 3 of 4 subtests pass	1

Members

document

attribute DOM: No WPT tests

readonly attribute Document document;

int32_t niso_window_get_document(niso_dom* dom, niso_handle self, niso_handle* out);

innerWidth

attribute

readonly attribute double innerWidth;

int32_t niso_window_get_inner_width(niso_dom* dom, niso_handle self, double* out);

innerHeight

attribute

readonly attribute double innerHeight;

int32_t niso_window_get_inner_height(niso_dom* dom, niso_handle self, double* out);

devicePixelRatio

attribute devicePixelRatio: No WPT tests

readonly attribute double devicePixelRatio;

int32_t niso_window_get_device_pixel_ratio(niso_dom* dom, niso_handle self, double* out);

getComputedStyle()

operation getComputedStyle(): Partial 31%

CSSStyleDeclaration getComputedStyle(Element elt);

int32_t niso_window_get_computed_style(niso_dom* dom, niso_handle self, niso_handle elt, niso_handle* out);

scrollX

attribute Scroll methods on elements: Partial 49%

readonly attribute double scrollX;

int32_t niso_window_get_scroll_x(niso_dom* dom, niso_handle self, double* out);

scrollY

attribute Scroll methods on elements: Partial 49%

readonly attribute double scrollY;

int32_t niso_window_get_scroll_y(niso_dom* dom, niso_handle self, double* out);

scrollTo()

operation Scroll methods on elements: Partial 49%

undefined scrollTo(unrestricted double x, unrestricted double y);

int32_t niso_window_scroll_to(niso_dom* dom, niso_handle self, double x, double y);

scrollBy()

operation Scroll methods on elements: Partial 49%

undefined scrollBy(unrestricted double x, unrestricted double y);

int32_t niso_window_scroll_by(niso_dom* dom, niso_handle self, double x, double y);

namedElements()

operation not in JS

[NisoInternal] HTMLCollection namedElements(DOMString name);

int32_t niso_window_named_elements(niso_dom* dom, niso_handle self, const char* name, size_t name_len, niso_handles* out);

hasBeenActive()

operation not in JS

[NisoInternal] boolean hasBeenActive();

int32_t niso_window_has_been_active(niso_dom* dom, niso_handle self, bool* out);

navigator.userActivation’s, which the glue makes.

isActive()

operation not in JS

[NisoInternal] boolean isActive();

int32_t niso_window_is_active(niso_dom* dom, niso_handle self, bool* out);

location

attribute Location: Partial 11%

[PutForwards=href] readonly attribute Location location;

int32_t niso_window_get_location(niso_dom* dom, niso_handle self, niso_handle* out);

history

attribute History: Partial 18%

readonly attribute History history;

int32_t niso_window_get_history(niso_dom* dom, niso_handle self, niso_handle* out);

localStorage

attribute localStorage and sessionStorage: Partial 95%

readonly attribute Storage localStorage;

int32_t niso_window_get_local_storage(niso_dom* dom, niso_handle self, niso_handle* out);

The standard’s WindowLocalStorage and WindowSessionStorage mixins.

sessionStorage

attribute localStorage and sessionStorage: Partial 95%

readonly attribute Storage sessionStorage;

int32_t niso_window_get_session_storage(niso_dom* dom, niso_handle self, niso_handle* out);

queueLoadEvent()

operation not in JS

[NisoInternal] undefined queueLoadEvent(VoidFunction callback);

int32_t niso_window_queue_load_event(niso_dom* dom, niso_handle self, niso_void_function_fn callback_fn, void* callback_userdata, niso_drop_fn callback_drop);

Queues callback as a task once the document’s resources (style sheets, images) have loaded: the window’s load event, which HTML delays until then.

screen

attribute

[SameObject] readonly attribute Screen screen;

int32_t niso_window_get_screen(niso_dom* dom, niso_handle self, niso_handle* out);

customElements

attribute Autonomous custom elements: Partial 80%

[SameObject] readonly attribute CustomElementRegistry customElements;

int32_t niso_window_get_custom_elements(niso_dom* dom, niso_handle self, niso_handle* out);

send()

operation not in JS

[NisoInternal] undefined send(ArrayBuffer message, USVString targetOrigin, sequence<MessagePort> transfer);

int32_t niso_window_send(niso_dom* dom, niso_handle self, const uint8_t* message, size_t message_len, const char* target_origin, size_t target_origin_len, const niso_handle* transfer, size_t transfer_len);

matchMedia()

operation matchMedia: Partial 40%

MediaQueryList matchMedia(DOMString query);

int32_t niso_window_match_media(niso_dom* dom, niso_handle self, const char* query, size_t query_len, niso_handle* out);

createImageBitmap()

operation from WindowOrWorkerGlobalScope

[NisoGlue] Promise<ImageBitmap> createImageBitmap(any image, optional any a, optional any b, optional any c, optional any d, optional any e);

bitmapFrom()

operation not in JS from WindowOrWorkerGlobalScope

[NisoInternal] ImageBitmap bitmapFrom(Element? element, ImageBitmap? bitmap, OffscreenCanvas? offscreen, Uint8ClampedArray data, unsigned long width, unsigned long height, boolean crop, long sx, long sy, long sw, long sh);

int32_t niso_window_or_worker_global_scope_bitmap_from(niso_dom* dom, niso_handle self, niso_handle element, niso_handle bitmap, niso_handle offscreen, const uint8_t* data, size_t data_len, uint32_t width, uint32_t height, bool crop, int32_t sx, int32_t sy, int32_t sw, int32_t sh, niso_handle* out);

One of element, bitmap and offscreen is the image, or data (width by height straight RGBA) when all three are null; cropped to sx, sy, sw, sh when crop is set.

bitmapDecode()

operation not in JS from WindowOrWorkerGlobalScope

[NisoInternal] ImageBitmap? bitmapDecode(ArrayBuffer bytes);

int32_t niso_window_or_worker_global_scope_bitmap_decode(niso_dom* dom, niso_handle self, const uint8_t* bytes, size_t bytes_len, niso_handle* out);

An image file’s bytes decoded.

origin

attribute from WindowOrWorkerGlobalScope

readonly attribute USVString origin;

int32_t niso_window_or_worker_global_scope_get_origin(niso_dom* dom, niso_handle self, niso_str* out);

The standard’s is [Replaceable], which the generator does not support.

setTimeout()

operation from WindowOrWorkerGlobalScope

long setTimeout(TimerHandler handler, optional long timeout = 0);

int32_t niso_window_or_worker_global_scope_set_timeout(niso_dom* dom, niso_handle self, niso_timer_handler_fn handler_fn, void* handler_userdata, niso_drop_fn handler_drop, int32_t timeout, int32_t* out);

clearTimeout()

operation from WindowOrWorkerGlobalScope

undefined clearTimeout(optional long id = 0);

int32_t niso_window_or_worker_global_scope_clear_timeout(niso_dom* dom, niso_handle self, int32_t id);

setInterval()

operation from WindowOrWorkerGlobalScope

long setInterval(TimerHandler handler, optional long timeout = 0);

int32_t niso_window_or_worker_global_scope_set_interval(niso_dom* dom, niso_handle self, niso_timer_handler_fn handler_fn, void* handler_userdata, niso_drop_fn handler_drop, int32_t timeout, int32_t* out);

clearInterval()

operation from WindowOrWorkerGlobalScope

undefined clearInterval(optional long id = 0);

int32_t niso_window_or_worker_global_scope_clear_interval(niso_dom* dom, niso_handle self, int32_t id);

queueTask()

operation not in JS from WindowOrWorkerGlobalScope

[NisoInternal] undefined queueTask(VoidFunction callback);

int32_t niso_window_or_worker_global_scope_queue_task(niso_dom* dom, niso_handle self, niso_void_function_fn callback_fn, void* callback_userdata, niso_drop_fn callback_drop);

Queues a task on the DOM’s task queue that calls callback: HTML’s “queue a global task”, for the binding’s own algorithms (postMessage, script events), which run in Dom::run like the DOM’s own tasks.

indexedDB

attribute from WindowOrWorkerGlobalScope

[SameObject] readonly attribute IDBFactory indexedDB;

int32_t niso_window_or_worker_global_scope_get_indexed_db(niso_dom* dom, niso_handle self, niso_handle* out);

performance

attribute from WindowOrWorkerGlobalScope

readonly attribute Performance performance;

int32_t niso_window_or_worker_global_scope_get_performance(niso_dom* dom, niso_handle self, niso_handle* out);

crypto

attribute from WindowOrWorkerGlobalScope

[SameObject] readonly attribute Crypto crypto;

int32_t niso_window_or_worker_global_scope_get_crypto(niso_dom* dom, niso_handle self, niso_handle* out);

requestAnimationFrame()

operation requestAnimationFrame(): Partial 93% from AnimationFrameProvider

unsigned long requestAnimationFrame(FrameRequestCallback callback);

int32_t niso_animation_frame_provider_request_animation_frame(niso_dom* dom, niso_handle self, niso_frame_request_callback_fn callback_fn, void* callback_userdata, niso_drop_fn callback_drop, uint32_t* out);

cancelAnimationFrame()

operation requestAnimationFrame(): Partial 93% from AnimationFrameProvider

undefined cancelAnimationFrame(unsigned long handle);

int32_t niso_animation_frame_provider_cancel_animation_frame(niso_dom* dom, niso_handle self, uint32_t handle);