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/**
* @license
* Copyright 2023 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
import type Protocol from 'devtools-protocol';
import type {ClickOptions, ElementHandle} from '../api/ElementHandle.js';
import type {HTTPResponse} from '../api/HTTPResponse.js';
import type {
Page,
QueryOptions,
WaitForSelectorOptions,
WaitTimeoutOptions,
} from '../api/Page.js';
import type {Accessibility} from '../cdp/Accessibility.js';
import type {DeviceRequestPrompt} from '../cdp/DeviceRequestPrompt.js';
import type {PuppeteerLifeCycleEvent} from '../cdp/LifecycleWatcher.js';
import {EventEmitter, type EventType} from '../common/EventEmitter.js';
import {getQueryHandlerAndSelector} from '../common/GetQueryHandler.js';
import {transposeIterableHandle} from '../common/HandleIterator.js';
import type {
Awaitable,
EvaluateFunc,
EvaluateFuncWith,
HandleFor,
NodeFor,
} from '../common/types.js';
import {withSourcePuppeteerURLIfNone} from '../common/util.js';
import {environment} from '../environment.js';
import {assert} from '../util/assert.js';
import {throwIfDisposed} from '../util/decorators.js';
import type {CDPSession} from './CDPSession.js';
import type {KeyboardTypeOptions} from './Input.js';
import {
FunctionLocator,
NodeLocator,
type Locator,
} from './locators/locators.js';
import type {Realm} from './Realm.js';
/**
* @public
*/
export interface WaitForOptions {
/**
* Maximum wait time in milliseconds. Pass 0 to disable the timeout.
*
* The default value can be changed by using the
* {@link Page.setDefaultTimeout} or {@link Page.setDefaultNavigationTimeout}
* methods.
*
* @defaultValue `30000`
*/
timeout?: number;
/**
* When to consider waiting succeeds. Given an array of event strings, waiting
* is considered to be successful after all events have been fired.
*
* @defaultValue `'load'`
*/
waitUntil?: PuppeteerLifeCycleEvent | PuppeteerLifeCycleEvent[];
/**
* @internal
*/
ignoreSameDocumentNavigation?: boolean;
/**
* A signal object that allows you to cancel the call.
*/
signal?: AbortSignal;
}
/**
* @public
*/
export interface GoToOptions extends WaitForOptions {
/**
* If provided, it will take preference over the referer header value set by
* {@link Page.setExtraHTTPHeaders | page.setExtraHTTPHeaders()}.
*/
referer?: string;
/**
* If provided, it will take preference over the referer-policy header value
* set by {@link Page.setExtraHTTPHeaders | page.setExtraHTTPHeaders()}.
*/
referrerPolicy?: string;
}
/**
* @public
*/
export interface FrameWaitForFunctionOptions {
/**
* An interval at which the `pageFunction` is executed, defaults to `raf`. If
* `polling` is a number, then it is treated as an interval in milliseconds at
* which the function would be executed. If `polling` is a string, then it can
* be one of the following values:
*
* - `raf` - to constantly execute `pageFunction` in `requestAnimationFrame`
* callback. This is the tightest polling mode which is suitable to observe
* styling changes.
*
* - `mutation` - to execute `pageFunction` on every DOM mutation.
*/
polling?: 'raf' | 'mutation' | number;
/**
* Maximum time to wait in milliseconds. Defaults to `30000` (30 seconds).
* Pass `0` to disable the timeout. Puppeteer's default timeout can be changed
* using {@link Page.setDefaultTimeout}.
*/
timeout?: number;
/**
* A signal object that allows you to cancel a waitForFunction call.
*/
signal?: AbortSignal;
}
/**
* @public
*/
export interface FrameAddScriptTagOptions {
/**
* URL of the script to be added.
*/
url?: string;
/**
* Path to a JavaScript file to be injected into the frame.
*
* @remarks
* If `path` is a relative path, it is resolved relative to the current
* working directory (`process.cwd()` in Node.js).
*/
path?: string;
/**
* JavaScript to be injected into the frame.
*/
content?: string;
/**
* Sets the `type` of the script. Use `module` in order to load an ES2015 module.
*/
type?: string;
/**
* Sets the `id` of the script.
*/
id?: string;
}
/**
* @public
*/
export interface FrameAddStyleTagOptions {
/**
* the URL of the CSS file to be added.
*/
url?: string;
/**
* The path to a CSS file to be injected into the frame.
* @remarks
* If `path` is a relative path, it is resolved relative to the current
* working directory (`process.cwd()` in Node.js).
*/
path?: string;
/**
* Raw CSS content to be injected into the frame.
*/
content?: string;
}
/**
* @public
*/
export interface FrameEvents extends Record<EventType, unknown> {
/** @internal */
[FrameEvent.FrameNavigated]: Protocol.Page.NavigationType;
/** @internal */
[FrameEvent.FrameSwapped]: undefined;
/** @internal */
[FrameEvent.LifecycleEvent]: undefined;
/** @internal */
[FrameEvent.FrameNavigatedWithinDocument]: undefined;
/** @internal */
[FrameEvent.FrameDetached]: Frame;
/** @internal */
[FrameEvent.FrameSwappedByActivation]: undefined;
}
/**
* We use symbols to prevent external parties listening to these events.
* They are internal to Puppeteer.
*
* @internal
*/
// eslint-disable-next-line @typescript-eslint/no-namespace
export namespace FrameEvent {
export const FrameNavigated = Symbol('Frame.FrameNavigated');
export const FrameSwapped = Symbol('Frame.FrameSwapped');
export const LifecycleEvent = Symbol('Frame.LifecycleEvent');
export const FrameNavigatedWithinDocument = Symbol(
'Frame.FrameNavigatedWithinDocument'
);
export const FrameDetached = Symbol('Frame.FrameDetached');
export const FrameSwappedByActivation = Symbol(
'Frame.FrameSwappedByActivation'
);
}
/**
* @internal
*/
export const throwIfDetached = throwIfDisposed<Frame>(frame => {
return `Attempted to use detached Frame '${frame._id}'.`;
});
/**
* Represents a DOM frame.
*
* To understand frames, you can think of frames as `<iframe>` elements. Just
* like iframes, frames can be nested, and when JavaScript is executed in a
* frame, the JavaScript does not effect frames inside the ambient frame the
* JavaScript executes in.
*
* @example
* At any point in time, {@link Page | pages} expose their current frame
* tree via the {@link Page.mainFrame} and {@link Frame.childFrames} methods.
*
* @example
* An example of dumping frame tree:
*
* ```ts
* import puppeteer from 'puppeteer';
*
* (async () => {
* const browser = await puppeteer.launch();
* const page = await browser.newPage();
* dumpFrameTree(page.mainFrame(), '');
* await browser.close();
*
* function dumpFrameTree(frame, indent) {
* console.log(indent + frame.url());
* for (const child of frame.childFrames()) {
* dumpFrameTree(child, indent + ' ');
* }
* }
* })();
* ```
*
* @example
* An example of getting text from an iframe element:
*
* ```ts
* const frame = page.frames().find(frame => frame.name() === 'myframe');
* const text = await frame.$eval('.selector', element => element.textContent);
* console.log(text);
* ```
*
* @remarks
* Frame lifecycles are controlled by three events that are all dispatched on
* the parent {@link Frame.page | page}:
*
* - {@link PageEvent.FrameAttached}
* - {@link PageEvent.FrameNavigated}
* - {@link PageEvent.FrameDetached}
*
* @public
*/
export abstract class Frame extends EventEmitter<FrameEvents> {
/**
* @internal
*/
_id!: string;
/**
* @internal
*/
_parentId?: string;
/**
* @internal
*/
_name?: string;
/**
* @internal
*/
_hasStartedLoading = false;
/**
* @internal
*/
constructor() {
super();
}
/**
* The page associated with the frame.
*/
abstract page(): Page;
/**
* Navigates the frame or page to the given `url`.
*
* @remarks
* Navigation to `about:blank` or navigation to the same URL with a different
* hash will succeed and return `null`.
*
* :::warning
*
* Headless shell mode doesn't support navigation to a PDF document. See the
*
* :::
*
* In headless shell, this method will not throw an error when any valid HTTP
* status code is returned by the remote server, including 404 "Not Found" and
* 500 "Internal Server Error". The status code for such responses can be
* retrieved by calling {@link HTTPResponse.status}.
*
* @param url - URL to navigate the frame to. The URL should include scheme,
* @param options - Options to configure waiting behavior.
* @returns A promise which resolves to the main resource response. In case of
* multiple redirects, the navigation will resolve with the response of the
* last redirect.
* @throws If:
*
* - there's an SSL error (e.g. in case of self-signed certificates).
*
* - target URL is invalid.
*
* - the timeout is exceeded during navigation.
*
* - the remote server does not respond or is unreachable.
*
* - the main resource failed to load.
*/
abstract goto(
url: string,
options?: GoToOptions
): Promise<HTTPResponse | null>;
/**
* Waits for the frame to navigate. It is useful for when you run code which
* will indirectly cause the frame to navigate.
*
* Usage of the
* to change the URL is considered a navigation.
*
* @example
*
* ```ts
* const [response] = await Promise.all([
* // The navigation promise resolves after navigation has finished
* frame.waitForNavigation(),
* // Clicking the link will indirectly cause a navigation
* frame.click('a.my-link'),
* ]);
* ```
*
* @param options - Options to configure waiting behavior.
* @returns A promise which resolves to the main resource response.
*/
abstract waitForNavigation(
options?: WaitForOptions
): Promise<HTTPResponse | null>;
/**
* @internal
*/
abstract get client(): CDPSession;
/**
* @internal
*/
abstract get accessibility(): Accessibility;
/**
* @internal
*/
abstract mainRealm(): Realm;
/**
* @internal
*/
abstract isolatedRealm(): Realm;
#_document: Promise<ElementHandle<Document>> | undefined;
/**
* @internal
*/
#document(): Promise<ElementHandle<Document>> {
if (!this.#_document) {
this.#_document = this.mainRealm().evaluateHandle(() => {
return document;
});
}
return this.#_document;
}
/**
* Used to clear the document handle that has been destroyed.
*
* @internal
*/
clearDocumentHandle(): void {
this.#_document = undefined;
}
/**
* @returns The frame element associated with this frame (if any).
*/
@throwIfDetached
async frameElement(): Promise<HandleFor<HTMLIFrameElement> | null> {
const parentFrame = this.parentFrame();
if (!parentFrame) {
return null;
}
using list = await parentFrame.isolatedRealm().evaluateHandle(() => {
return document.querySelectorAll('iframe,frame');
});
for await (using iframe of transposeIterableHandle(list)) {
const frame = await iframe.contentFrame();
if (frame?._id === this._id) {
return (iframe as HandleFor<HTMLIFrameElement>).move();
}
}
return null;
}
/**
* Behaves identically to {@link Page.evaluateHandle} except it's run within
* the context of this frame.
*
* See {@link Page.evaluateHandle} for details.
*/
@throwIfDetached
async evaluateHandle<
Params extends unknown[],
Func extends EvaluateFunc<Params> = EvaluateFunc<Params>,
>(
pageFunction: Func | string,
...args: Params
): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
pageFunction = withSourcePuppeteerURLIfNone(
this.evaluateHandle.name,
pageFunction
);
return await this.mainRealm().evaluateHandle(pageFunction, ...args);
}
/**
* Behaves identically to {@link Page.evaluate} except it's run within
* the context of this frame.
*
* See {@link Page.evaluate} for details.
*/
@throwIfDetached
async evaluate<
Params extends unknown[],
Func extends EvaluateFunc<Params> = EvaluateFunc<Params>,
>(
pageFunction: Func | string,
...args: Params
): Promise<Awaited<ReturnType<Func>>> {
pageFunction = withSourcePuppeteerURLIfNone(
this.evaluate.name,
pageFunction
);
return await this.mainRealm().evaluate(pageFunction, ...args);
}
/**
* Creates a locator for the provided selector. See {@link Locator} for
* details and supported actions.
*
* @param selector -
* to query the page for.
* can be passed as-is and a
* {@link https://pptr.dev/guides/page-interactions#non-css-selectors | Puppeteer-specific selector syntax}
* allows quering by
* and
* and
* {@link https://pptr.dev/guides/page-interactions#querying-elements-in-shadow-dom | combining these queries across shadow roots}.
* Alternatively, you can specify the selector type using a
*/
locator<Selector extends string>(
selector: Selector
): Locator<NodeFor<Selector>>;
/**
* Creates a locator for the provided function. See {@link Locator} for
* details and supported actions.
*/
locator<Ret>(func: () => Awaitable<Ret>): Locator<Ret>;
/**
* @internal
*/
@throwIfDetached
locator<Selector extends string, Ret>(
selectorOrFunc: Selector | (() => Awaitable<Ret>)
): Locator<NodeFor<Selector>> | Locator<Ret> {
if (typeof selectorOrFunc === 'string') {
return NodeLocator.create(this, selectorOrFunc);
} else {
return FunctionLocator.create(this, selectorOrFunc);
}
}
/**
* Queries the frame for an element matching the given selector.
*
* @param selector -
* to query the page for.
* can be passed as-is and a
* {@link https://pptr.dev/guides/page-interactions#non-css-selectors | Puppeteer-specific selector syntax}
* allows quering by
* and
* and
* {@link https://pptr.dev/guides/page-interactions#querying-elements-in-shadow-dom | combining these queries across shadow roots}.
* Alternatively, you can specify the selector type using a
*
* @returns A {@link ElementHandle | element handle} to the first element
* matching the given selector. Otherwise, `null`.
*/
@throwIfDetached
async $<Selector extends string>(
selector: Selector
): Promise<ElementHandle<NodeFor<Selector>> | null> {
// eslint-disable-next-line rulesdir/use-using -- This is cached.
const document = await this.#document();
return await document.$(selector);
}
/**
* Queries the frame for all elements matching the given selector.
*
* @param selector -
* to query the page for.
* can be passed as-is and a
* {@link https://pptr.dev/guides/page-interactions#non-css-selectors | Puppeteer-specific selector syntax}
* allows quering by
* and
* and
* {@link https://pptr.dev/guides/page-interactions#querying-elements-in-shadow-dom | combining these queries across shadow roots}.
* Alternatively, you can specify the selector type using a
*
* @returns An array of {@link ElementHandle | element handles} that point to
* elements matching the given selector.
*/
@throwIfDetached
async $$<Selector extends string>(
selector: Selector,
options?: QueryOptions
): Promise<Array<ElementHandle<NodeFor<Selector>>>> {
// eslint-disable-next-line rulesdir/use-using -- This is cached.
const document = await this.#document();
return await document.$$(selector, options);
}
/**
* Runs the given function on the first element matching the given selector in
* the frame.
*
* If the given function returns a promise, then this method will wait till
* the promise resolves.
*
* @example
*
* ```ts
* const searchValue = await frame.$eval('#search', el => el.value);
* ```
*
* @param selector -
* to query the page for.
* can be passed as-is and a
* {@link https://pptr.dev/guides/page-interactions#non-css-selectors | Puppeteer-specific selector syntax}
* allows quering by
* and
* and
* {@link https://pptr.dev/guides/page-interactions#querying-elements-in-shadow-dom | combining these queries across shadow roots}.
* Alternatively, you can specify the selector type using a
* @param pageFunction - The function to be evaluated in the frame's context.
* The first element matching the selector will be passed to the function as
* its first argument.
* @param args - Additional arguments to pass to `pageFunction`.
* @returns A promise to the result of the function.
*/
@throwIfDetached
async $eval<
Selector extends string,
Params extends unknown[],
Func extends EvaluateFuncWith<NodeFor<Selector>, Params> = EvaluateFuncWith<
NodeFor<Selector>,
Params
>,
>(
selector: Selector,
pageFunction: string | Func,
...args: Params
): Promise<Awaited<ReturnType<Func>>> {
pageFunction = withSourcePuppeteerURLIfNone(this.$eval.name, pageFunction);
// eslint-disable-next-line rulesdir/use-using -- This is cached.
const document = await this.#document();
return await document.$eval(selector, pageFunction, ...args);
}
/**
* Runs the given function on an array of elements matching the given selector
* in the frame.
*
* If the given function returns a promise, then this method will wait till
* the promise resolves.
*
* @example
*
* ```ts
* const divsCounts = await frame.$$eval('div', divs => divs.length);
* ```
*
* @param selector -
* to query the page for.
* can be passed as-is and a
* {@link https://pptr.dev/guides/page-interactions#non-css-selectors | Puppeteer-specific selector syntax}
* allows quering by
* and
* and
* {@link https://pptr.dev/guides/page-interactions#querying-elements-in-shadow-dom | combining these queries across shadow roots}.
* Alternatively, you can specify the selector type using a
* @param pageFunction - The function to be evaluated in the frame's context.
* An array of elements matching the given selector will be passed to the
* function as its first argument.
* @param args - Additional arguments to pass to `pageFunction`.
* @returns A promise to the result of the function.
*/
@throwIfDetached
async $$eval<
Selector extends string,
Params extends unknown[],
Func extends EvaluateFuncWith<
Array<NodeFor<Selector>>,
Params
> = EvaluateFuncWith<Array<NodeFor<Selector>>, Params>,
>(
selector: Selector,
pageFunction: string | Func,
...args: Params
): Promise<Awaited<ReturnType<Func>>> {
pageFunction = withSourcePuppeteerURLIfNone(this.$$eval.name, pageFunction);
// eslint-disable-next-line rulesdir/use-using -- This is cached.
const document = await this.#document();
return await document.$$eval(selector, pageFunction, ...args);
}
/**
* Waits for an element matching the given selector to appear in the frame.
*
* This method works across navigations.
*
* @example
*
* ```ts
* import puppeteer from 'puppeteer';
*
* (async () => {
* const browser = await puppeteer.launch();
* const page = await browser.newPage();
* let currentURL;
* page
* .mainFrame()
* .waitForSelector('img')
* .then(() => console.log('First URL with image: ' + currentURL));
*
* for (currentURL of [
* ]) {
* await page.goto(currentURL);
* }
* await browser.close();
* })();
* ```
*
* @param selector - The selector to query and wait for.
* @param options - Options for customizing waiting behavior.
* @returns An element matching the given selector.
* @throws Throws if an element matching the given selector doesn't appear.
*/
@throwIfDetached
async waitForSelector<Selector extends string>(
selector: Selector,
options: WaitForSelectorOptions = {}
): Promise<ElementHandle<NodeFor<Selector>> | null> {
const {updatedSelector, QueryHandler, polling} =
getQueryHandlerAndSelector(selector);
return (await QueryHandler.waitFor(this, updatedSelector, {
polling,
...options,
})) as ElementHandle<NodeFor<Selector>> | null;
}
/**
* @example
* The `waitForFunction` can be used to observe viewport size change:
*
* ```ts
* import puppeteer from 'puppeteer';
*
* (async () => {
* . const browser = await puppeteer.launch();
* . const page = await browser.newPage();
* . const watchDog = page.mainFrame().waitForFunction('window.innerWidth < 100');
* . page.setViewport({width: 50, height: 50});
* . await watchDog;
* . await browser.close();
* })();
* ```
*
* To pass arguments from Node.js to the predicate of `page.waitForFunction` function:
*
* ```ts
* const selector = '.foo';
* await frame.waitForFunction(
* selector => !!document.querySelector(selector),
* {}, // empty options object
* selector
* );
* ```
*
* @param pageFunction - the function to evaluate in the frame context.
* @param options - options to configure the polling method and timeout.
* @param args - arguments to pass to the `pageFunction`.
* @returns the promise which resolve when the `pageFunction` returns a truthy value.
*/
@throwIfDetached
async waitForFunction<
Params extends unknown[],
Func extends EvaluateFunc<Params> = EvaluateFunc<Params>,
>(
pageFunction: Func | string,
options: FrameWaitForFunctionOptions = {},
...args: Params
): Promise<HandleFor<Awaited<ReturnType<Func>>>> {
return await (this.mainRealm().waitForFunction(
pageFunction,
options,
...args
) as Promise<HandleFor<Awaited<ReturnType<Func>>>>);
}
/**
* The full HTML contents of the frame, including the DOCTYPE.
*/
@throwIfDetached
async content(): Promise<string> {
return await this.evaluate(() => {
let content = '';
for (const node of document.childNodes) {
switch (node) {
case document.documentElement:
content += document.documentElement.outerHTML;
break;
default:
content += new XMLSerializer().serializeToString(node);
break;
}
}
return content;
});
}
/**
* Set the content of the frame.
*
* @param html - HTML markup to assign to the page.
* @param options - Options to configure how long before timing out and at
* what point to consider the content setting successful.
*/
abstract setContent(html: string, options?: WaitForOptions): Promise<void>;
/**
* @internal
*/
async setFrameContent(content: string): Promise<void> {
return await this.evaluate(html => {
document.open();
document.write(html);
document.close();
}, content);
}
/**
* The frame's `name` attribute as specified in the tag.
*
* @remarks
* If the name is empty, it returns the `id` attribute instead.
*
* @remarks
* This value is calculated once when the frame is created, and will not
* update if the attribute is changed later.
*
* @deprecated Use
*
* ```ts
* const element = await frame.frameElement();
* const nameOrId = await element.evaluate(frame => frame.name ?? frame.id);
* ```
*/
name(): string {
return this._name || '';
}
/**
* The frame's URL.
*/
abstract url(): string;
/**
* The parent frame, if any. Detached and main frames return `null`.
*/
abstract parentFrame(): Frame | null;
/**
* An array of child frames.
*/
abstract childFrames(): Frame[];
/**
* @returns `true` if the frame has detached. `false` otherwise.
*/
abstract get detached(): boolean;
/**
* Is`true` if the frame has been detached. Otherwise, `false`.
*
* @deprecated Use the `detached` getter.
*/
isDetached(): boolean {
return this.detached;
}
/**
* @internal
*/
get disposed(): boolean {
return this.detached;
}
/**
* Adds a `<script>` tag into the page with the desired url or content.
*
* @param options - Options for the script.
* @returns An {@link ElementHandle | element handle} to the injected
* `<script>` element.
*/
@throwIfDetached
async addScriptTag(
options: FrameAddScriptTagOptions
): Promise<ElementHandle<HTMLScriptElement>> {
let {content = '', type} = options;
const {path} = options;
if (+!!options.url + +!!path + +!!content !== 1) {
throw new Error(
'Exactly one of `url`, `path`, or `content` must be specified.'
);
}
if (path) {
content = await environment.value.fs.promises.readFile(path, 'utf8');
content += `//# sourceURL=${path.replace(/\n/g, '')}`;
}
type = type ?? 'text/javascript';
return await this.mainRealm().transferHandle(
await this.isolatedRealm().evaluateHandle(
async ({url, id, type, content}) => {
return await new Promise<HTMLScriptElement>((resolve, reject) => {
const script = document.createElement('script');
script.type = type;
script.text = content;
script.addEventListener(
'error',
event => {
reject(new Error(event.message ?? 'Could not load script'));
},
{once: true}
);
if (id) {
script.id = id;
}
if (url) {
script.src = url;
script.addEventListener(
'load',
() => {
resolve(script);
},
{once: true}
);
document.head.appendChild(script);
} else {
document.head.appendChild(script);
resolve(script);
}
});
},
{...options, type, content}
)
);
}
/**
* Adds a `HTMLStyleElement` into the frame with the desired URL
*
* @returns An {@link ElementHandle | element handle} to the loaded `<style>`
* element.
*/
async addStyleTag(
options: Omit<FrameAddStyleTagOptions, 'url'>
): Promise<ElementHandle<HTMLStyleElement>>;
/**
* Adds a `HTMLLinkElement` into the frame with the desired URL
*
* @returns An {@link ElementHandle | element handle} to the loaded `<link>`
* element.
*/
async addStyleTag(
options: FrameAddStyleTagOptions
): Promise<ElementHandle<HTMLLinkElement>>;
/**
* @internal
*/
@throwIfDetached
async addStyleTag(
options: FrameAddStyleTagOptions
): Promise<ElementHandle<HTMLStyleElement | HTMLLinkElement>> {
let {content = ''} = options;
const {path} = options;
if (+!!options.url + +!!path + +!!content !== 1) {
throw new Error(
'Exactly one of `url`, `path`, or `content` must be specified.'
);
}
if (path) {
content = await environment.value.fs.promises.readFile(path, 'utf8');
content += '/*# sourceURL=' + path.replace(/\n/g, '') + '*/';
options.content = content;
}
return await this.mainRealm().transferHandle(
await this.isolatedRealm().evaluateHandle(async ({url, content}) => {
return await new Promise<HTMLStyleElement | HTMLLinkElement>(
(resolve, reject) => {
let element: HTMLStyleElement | HTMLLinkElement;
if (!url) {
element = document.createElement('style');
element.appendChild(document.createTextNode(content!));
} else {
const link = document.createElement('link');
link.rel = 'stylesheet';
link.href = url;
element = link;
}
element.addEventListener(
'load',
() => {
resolve(element);
},
{once: true}
);
element.addEventListener(
'error',
event => {
reject(
new Error(
(event as ErrorEvent).message ?? 'Could not load style'
)
);
},
{once: true}
);
document.head.appendChild(element);
return element;
}
);
}, options)
);
}
/**
* Clicks the first element found that matches `selector`.
*
* @remarks
* If `click()` triggers a navigation event and there's a separate
* `page.waitForNavigation()` promise to be resolved, you may end up with a
* race condition that yields unexpected results. The correct pattern for
* click and wait for navigation is the following:
*
* ```ts
* const [response] = await Promise.all([
* page.waitForNavigation(waitOptions),
* frame.click(selector, clickOptions),
* ]);
* ```
*
* @param selector - The selector to query for.
*/
@throwIfDetached
async click(
selector: string,
options: Readonly<ClickOptions> = {}
): Promise<void> {
using handle = await this.$(selector);
assert(handle, `No element found for selector: ${selector}`);
await handle.click(options);
await handle.dispose();
}
/**
* Focuses the first element that matches the `selector`.
*
* @param selector - The selector to query for.
* @throws Throws if there's no element matching `selector`.
*/
@throwIfDetached
async focus(selector: string): Promise<void> {
using handle = await this.$(selector);
assert(handle, `No element found for selector: ${selector}`);
await handle.focus();
}
/**
* Hovers the pointer over the center of the first element that matches the
* `selector`.
*
* @param selector - The selector to query for.
* @throws Throws if there's no element matching `selector`.
*/
@throwIfDetached
async hover(selector: string): Promise<void> {
using handle = await this.$(selector);
assert(handle, `No element found for selector: ${selector}`);
await handle.hover();
}
/**
* Selects a set of value on the first `<select>` element that matches the
* `selector`.
*
* @example
*
* ```ts
* frame.select('select#colors', 'blue'); // single selection
* frame.select('select#colors', 'red', 'green', 'blue'); // multiple selections
* ```
*
* @param selector - The selector to query for.
* @param values - The array of values to select. If the `<select>` has the
* `multiple` attribute, all values are considered, otherwise only the first
* one is taken into account.
* @returns the list of values that were successfully selected.
* @throws Throws if there's no `<select>` matching `selector`.
*/
@throwIfDetached
async select(selector: string, ...values: string[]): Promise<string[]> {
using handle = await this.$(selector);
assert(handle, `No element found for selector: ${selector}`);
return await handle.select(...values);
}
/**
* Taps the first element that matches the `selector`.
*
* @param selector - The selector to query for.
* @throws Throws if there's no element matching `selector`.
*/
@throwIfDetached
async tap(selector: string): Promise<void> {
using handle = await this.$(selector);
assert(handle, `No element found for selector: ${selector}`);
await handle.tap();
}
/**
* Sends a `keydown`, `keypress`/`input`, and `keyup` event for each character
* in the text.
*
* @remarks
* To press a special key, like `Control` or `ArrowDown`, use
* {@link Keyboard.press}.
*
* @example
*
* ```ts
* await frame.type('#mytextarea', 'Hello'); // Types instantly
* await frame.type('#mytextarea', 'World', {delay: 100}); // Types slower, like a user
* ```
*
* @param selector - the selector for the element to type into. If there are
* multiple the first will be used.
* @param text - text to type into the element
* @param options - takes one option, `delay`, which sets the time to wait
* between key presses in milliseconds. Defaults to `0`.
*/
@throwIfDetached
async type(
selector: string,
text: string,
options?: Readonly<KeyboardTypeOptions>
): Promise<void> {
using handle = await this.$(selector);
assert(handle, `No element found for selector: ${selector}`);
await handle.type(text, options);
}
/**
* The frame's title.
*/
@throwIfDetached
async title(): Promise<string> {
return await this.isolatedRealm().evaluate(() => {
return document.title;
});
}
/**
* This method is typically coupled with an action that triggers a device
* request from an api such as WebBluetooth.
*
* :::caution
*
* This must be called before the device request is made. It will not return a
* currently active device prompt.
*
* :::
*
* @example
*
* ```ts
* const [devicePrompt] = Promise.all([
* frame.waitForDevicePrompt(),
* frame.click('#connect-bluetooth'),
* ]);
* await devicePrompt.select(
* await devicePrompt.waitForDevice(({name}) => name.includes('My Device'))
* );
* ```
*
* @internal
*/
abstract waitForDevicePrompt(
options?: WaitTimeoutOptions
): Promise<DeviceRequestPrompt>;
}