mirror of
https://github.com/puppeteer/puppeteer
synced 2024-06-14 14:02:48 +00:00
748 lines
22 KiB
JavaScript
748 lines
22 KiB
JavaScript
const {helper} = require('./helper');
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const {Keyboard, Mouse} = require('./Input');
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const {constants} = require('./common');
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const {Dialog} = require('./Dialog');
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const {TimeoutError} = require('./Errors');
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const fs = require('fs');
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const mime = require('mime');
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const util = require('util');
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const EventEmitter = require('events');
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const {createHandle} = require('./JSHandle');
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const {Events} = require('./Events');
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const {FrameManager} = require('./FrameManager');
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const writeFileAsync = util.promisify(fs.writeFile);
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/**
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* @internal
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*/
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class PageSession extends EventEmitter {
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constructor(connection, pageId) {
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super();
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this._connection = connection;
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this._pageId = pageId;
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const wrapperSymbol = Symbol('listenerWrapper');
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function wrapperListener(listener, params) {
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if (params.pageId === pageId)
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listener.call(null, params);
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}
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this.on('removeListener', (eventName, listener) => {
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this._connection.removeListener(eventName, listener[wrapperSymbol]);
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});
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this.on('newListener', (eventName, listener) => {
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if (!listener[wrapperSymbol])
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listener[wrapperSymbol] = wrapperListener.bind(null, listener);
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this._connection.on(eventName, listener[wrapperSymbol]);
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});
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}
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async send(method, params = {}) {
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params = Object.assign({}, params, {pageId: this._pageId});
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return await this._connection.send(method, params);
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}
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}
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class Page extends EventEmitter {
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/**
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*
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* @param {!Puppeteer.Connection} connection
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* @param {!Puppeteer.Target} target
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* @param {string} pageId
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* @param {?Puppeteer.Viewport} defaultViewport
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*/
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static async create(connection, target, pageId, defaultViewport) {
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const session = new PageSession(connection, pageId);
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const page = new Page(session, target);
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await session.send('Page.enable');
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if (defaultViewport)
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await page.setViewport(defaultViewport);
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return page;
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}
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/**
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* @param {!PageSession} session
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* @param {!Puppeteer.Target} target
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*/
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constructor(session, target) {
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super();
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this._session = session;
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this._target = target;
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this._keyboard = new Keyboard(session);
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this._mouse = new Mouse(session, this._keyboard);
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this._isClosed = false;
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this._frameManager = new FrameManager(session, this);
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this._eventListeners = [
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helper.addEventListener(this._session, 'Page.uncaughtError', this._onUncaughtError.bind(this)),
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helper.addEventListener(this._session, 'Page.consoleAPICalled', this._onConsole.bind(this)),
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helper.addEventListener(this._session, 'Page.dialogOpened', this._onDialogOpened.bind(this)),
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helper.addEventListener(this._session, 'Browser.tabClosed', this._onClosed.bind(this)),
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helper.addEventListener(this._session, 'Page.navigationCommitted', this._onNavigationCommitted.bind(this)),
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helper.addEventListener(this._session, 'Page.sameDocumentNavigation', this._onSameDocumentNavigation.bind(this)),
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helper.addEventListener(this._frameManager, Events.FrameManager.Load, () => this.emit(Events.Page.Load)),
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helper.addEventListener(this._frameManager, Events.FrameManager.DOMContentLoaded, () => this.emit(Events.Page.DOMContentLoaded)),
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helper.addEventListener(this._frameManager, Events.FrameManager.FrameAttached, frame => this.emit(Events.Page.FrameAttached, frame)),
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helper.addEventListener(this._frameManager, Events.FrameManager.FrameDetached, frame => this.emit(Events.Page.FrameDetached, frame)),
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];
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this._viewport = null;
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}
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/**
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* @param {string} userAgent
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*/
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async setUserAgent(userAgent) {
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await this._session.send('Page.setUserAgent', {userAgent});
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}
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/**
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* @param {{viewport: !Puppeteer.Viewport, userAgent: string}} options
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*/
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async emulate(options) {
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await Promise.all([
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this.setViewport(options.viewport),
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this.setUserAgent(options.userAgent),
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]);
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}
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/**
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* @return {BrowserContext}
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*/
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browserContext() {
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return this._target.browserContext();
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}
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_onUncaughtError(params) {
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let error = new Error(params.message);
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error.stack = params.stack;
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this.emit(Events.Page.PageError, error);
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}
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viewport() {
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return this._viewport;
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}
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/**
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* @param {!Puppeteer.Viewport} viewport
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*/
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async setViewport(viewport) {
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const {
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width,
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height,
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isMobile = false,
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deviceScaleFactor = 1,
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hasTouch = false,
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isLandscape = false,
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} = viewport;
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await this._session.send('Page.setViewport', {
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viewport: { width, height, isMobile, deviceScaleFactor, hasTouch, isLandscape },
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});
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const oldIsMobile = this._viewport ? this._viewport.isMobile : false;
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const oldHasTouch = this._viewport ? this._viewport.hasTouch : false;
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this._viewport = viewport;
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if (oldIsMobile !== isMobile || oldHasTouch !== hasTouch)
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await this.reload();
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}
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/**
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* @param {function()|string} pageFunction
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* @param {!Array<*>} args
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*/
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async evaluateOnNewDocument(pageFunction, ...args) {
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const script = helper.evaluationString(pageFunction, ...args);
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await this._session.send('Page.addScriptToEvaluateOnNewDocument', { script });
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}
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browser() {
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return this._target.browser();
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}
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target() {
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return this._target;
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}
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url() {
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return this._frameManager.mainFrame().url();
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}
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frames() {
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return this._frameManager.frames();
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}
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_onDialogOpened(params) {
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this.emit(Events.Page.Dialog, new Dialog(this._session, params));
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}
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mainFrame() {
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return this._frameManager.mainFrame();
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}
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_onNavigationCommitted(params) {
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const frame = this._frameManager.frame(params.frameId);
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frame._navigated(params.url, params.name, params.navigationId);
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frame._DOMContentLoadedFired = false;
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frame._loadFired = false;
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this.emit(Events.Page.FrameNavigated, frame);
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}
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_onSameDocumentNavigation(params) {
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const frame = this._frameManager.frame(params.frameId);
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frame._url = params.url;
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this.emit(Events.Page.FrameNavigated, frame);
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}
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get keyboard(){
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return this._keyboard;
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}
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get mouse(){
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return this._mouse;
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}
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_normalizeWaitUntil(waitUntil) {
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if (!Array.isArray(waitUntil))
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waitUntil = [waitUntil];
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for (const condition of waitUntil) {
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if (condition !== 'load' && condition !== 'domcontentloaded')
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throw new Error('Unknown waitUntil condition: ' + condition);
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}
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return waitUntil;
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}
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/**
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* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
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*/
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async waitForNavigation(options = {}) {
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const {
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timeout = constants.DEFAULT_NAVIGATION_TIMEOUT,
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waitUntil = ['load'],
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} = options;
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const frame = this._frameManager.mainFrame();
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const normalizedWaitUntil = this._normalizeWaitUntil(waitUntil);
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const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
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let timeoutCallback;
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const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
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const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
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const nextNavigationDog = new NextNavigationWatchdog(this._session, frame);
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const error1 = await Promise.race([
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nextNavigationDog.promise(),
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timeoutPromise,
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]);
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nextNavigationDog.dispose();
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// If timeout happened first - throw.
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if (error1) {
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clearTimeout(timeoutId);
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throw error1;
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}
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const {navigationId, url} = nextNavigationDog.navigation();
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if (!navigationId) {
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// Same document navigation happened.
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clearTimeout(timeoutId);
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return;
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}
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const watchDog = new NavigationWatchdog(this._session, frame, navigationId, url, normalizedWaitUntil);
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const error = await Promise.race([
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timeoutPromise,
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watchDog.promise(),
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]);
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watchDog.dispose();
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clearTimeout(timeoutId);
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if (error)
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throw error;
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}
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/**
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* @param {string} url
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* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
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*/
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async goto(url, options = {}) {
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const {
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timeout = constants.DEFAULT_NAVIGATION_TIMEOUT,
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waitUntil = ['load'],
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} = options;
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const frame = this._frameManager.mainFrame();
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const normalizedWaitUntil = this._normalizeWaitUntil(waitUntil);
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const {navigationId} = await this._session.send('Page.navigate', {
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frameId: frame._frameId,
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url,
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});
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if (!navigationId)
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return;
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const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
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let timeoutCallback;
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const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
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const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
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const watchDog = new NavigationWatchdog(this._session, frame, navigationId, url, normalizedWaitUntil);
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const error = await Promise.race([
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timeoutPromise,
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watchDog.promise(),
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]);
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watchDog.dispose();
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clearTimeout(timeoutId);
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if (error)
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throw error;
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}
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/**
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* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
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*/
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async goBack(options = {}) {
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const {
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timeout = constants.DEFAULT_NAVIGATION_TIMEOUT,
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waitUntil = ['load'],
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} = options;
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const frame = this._frameManager.mainFrame();
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const normalizedWaitUntil = this._normalizeWaitUntil(waitUntil);
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const {navigationId, navigationURL} = await this._session.send('Page.goBack', {
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frameId: frame._frameId,
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});
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if (!navigationId)
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return;
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const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
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let timeoutCallback;
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const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
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const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
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const watchDog = new NavigationWatchdog(this._session, frame, navigationId, navigationURL, normalizedWaitUntil);
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const error = await Promise.race([
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timeoutPromise,
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watchDog.promise(),
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]);
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watchDog.dispose();
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clearTimeout(timeoutId);
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if (error)
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throw error;
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}
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/**
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* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
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*/
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async goForward(options = {}) {
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const {
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timeout = constants.DEFAULT_NAVIGATION_TIMEOUT,
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waitUntil = ['load'],
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} = options;
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const frame = this._frameManager.mainFrame();
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const normalizedWaitUntil = this._normalizeWaitUntil(waitUntil);
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const {navigationId, navigationURL} = await this._session.send('Page.goForward', {
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frameId: frame._frameId,
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});
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if (!navigationId)
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return;
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const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
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let timeoutCallback;
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const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
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const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
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const watchDog = new NavigationWatchdog(this._session, frame, navigationId, navigationURL, normalizedWaitUntil);
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const error = await Promise.race([
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timeoutPromise,
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watchDog.promise(),
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]);
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watchDog.dispose();
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clearTimeout(timeoutId);
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if (error)
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throw error;
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}
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/**
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* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
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*/
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async reload(options = {}) {
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const {
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timeout = constants.DEFAULT_NAVIGATION_TIMEOUT,
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waitUntil = ['load'],
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} = options;
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const frame = this._frameManager.mainFrame();
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const normalizedWaitUntil = this._normalizeWaitUntil(waitUntil);
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const {navigationId, navigationURL} = await this._session.send('Page.reload', {
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frameId: frame._frameId,
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});
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if (!navigationId)
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return;
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const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
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let timeoutCallback;
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const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
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const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
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const watchDog = new NavigationWatchdog(this._session, frame, navigationId, navigationURL, normalizedWaitUntil);
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const error = await Promise.race([
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timeoutPromise,
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watchDog.promise(),
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]);
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watchDog.dispose();
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clearTimeout(timeoutId);
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if (error)
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throw error;
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}
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/**
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* @param {{fullPage?: boolean, clip?: {width: number, height: number, x: number, y: number}, encoding?: string, path?: string}} options
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* @return {Promise<string|Buffer>}
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*/
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async screenshot(options = {}) {
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const {data} = await this._session.send('Page.screenshot', {
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mimeType: getScreenshotMimeType(options),
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fullPage: options.fullPage,
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clip: options.clip,
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});
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const buffer = options.encoding === 'base64' ? data : Buffer.from(data, 'base64');
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if (options.path)
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await writeFileAsync(options.path, buffer);
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return buffer;
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}
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async evaluate(pageFunction, ...args) {
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return await this._frameManager.mainFrame().evaluate(pageFunction, ...args);
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}
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/**
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* @param {!{content?: string, path?: string, type?: string, url?: string}} options
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* @return {!Promise<!ElementHandle>}
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*/
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async addScriptTag(options) {
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return await this._frameManager.mainFrame().addScriptTag(options);
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}
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/**
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* @param {!{content?: string, path?: string, url?: string}} options
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* @return {!Promise<!ElementHandle>}
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*/
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async addStyleTag(options) {
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return await this._frameManager.mainFrame().addStyleTag(options);
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}
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/**
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* @param {string} selector
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* @param {!{delay?: number, button?: string, clickCount?: number}=} options
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*/
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async click(selector, options = {}) {
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return await this._frameManager.mainFrame().click(selector, options);
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}
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/**
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* @param {string} selector
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* @param {string} text
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* @param {{delay: (number|undefined)}=} options
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*/
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async type(selector, text, options) {
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return await this._frameManager.mainFrame().type(selector, text, options);
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}
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/**
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* @param {string} selector
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*/
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async focus(selector) {
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return await this._frameManager.mainFrame().focus(selector);
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}
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/**
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* @param {string} selector
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*/
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async hover(selector) {
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return await this._frameManager.mainFrame().hover(selector);
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}
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/**
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* @param {(string|number|Function)} selectorOrFunctionOrTimeout
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* @param {!{polling?: string|number, timeout?: number, visible?: boolean, hidden?: boolean}=} options
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* @param {!Array<*>} args
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* @return {!Promise<!JSHandle>}
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*/
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async waitFor(selectorOrFunctionOrTimeout, options = {}, ...args) {
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return await this._frameManager.mainFrame().waitFor(selectorOrFunctionOrTimeout, options, ...args);
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}
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/**
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* @param {Function|string} pageFunction
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* @param {!{polling?: string|number, timeout?: number}=} options
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* @return {!Promise<!JSHandle>}
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*/
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async waitForFunction(pageFunction, options = {}, ...args) {
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return await this._frameManager.mainFrame().waitForFunction(pageFunction, options, ...args);
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}
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/**
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* @param {string} selector
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* @param {!{timeout?: number, visible?: boolean, hidden?: boolean}=} options
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* @return {!Promise<!ElementHandle>}
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*/
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async waitForSelector(selector, options = {}) {
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return await this._frameManager.mainFrame().waitForSelector(selector, options);
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}
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/**
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* @param {string} xpath
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* @param {!{timeout?: number, visible?: boolean, hidden?: boolean}=} options
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* @return {!Promise<!ElementHandle>}
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*/
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async waitForXPath(xpath, options = {}) {
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return await this._frameManager.mainFrame().waitForXPath(xpath, options);
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}
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/**
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* @return {!Promise<string>}
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*/
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async title() {
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return await this._frameManager.mainFrame().title();
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}
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|
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/**
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* @param {string} selector
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* @return {!Promise<?ElementHandle>}
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*/
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async $(selector) {
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return await this._frameManager.mainFrame().$(selector);
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}
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|
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/**
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* @param {string} selector
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* @return {!Promise<!Array<!ElementHandle>>}
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*/
|
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async $$(selector) {
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return await this._frameManager.mainFrame().$$(selector);
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}
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|
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/**
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* @param {string} selector
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* @param {Function|String} pageFunction
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* @param {!Array<*>} args
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* @return {!Promise<(!Object|undefined)>}
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*/
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async $eval(selector, pageFunction, ...args) {
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return await this._frameManager.mainFrame().$eval(selector, pageFunction, ...args);
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}
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|
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/**
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* @param {string} selector
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* @param {Function|String} pageFunction
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* @param {!Array<*>} args
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* @return {!Promise<(!Object|undefined)>}
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*/
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async $$eval(selector, pageFunction, ...args) {
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return await this._frameManager.mainFrame().$$eval(selector, pageFunction, ...args);
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}
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|
|
/**
|
|
* @param {string} expression
|
|
* @return {!Promise<!Array<!ElementHandle>>}
|
|
*/
|
|
async $x(expression) {
|
|
return await this._frameManager.mainFrame().$x(expression);
|
|
}
|
|
|
|
async evaluateHandle(pageFunction, ...args) {
|
|
return await this._frameManager.mainFrame().evaluateHandle(pageFunction, ...args);
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {!Array<string>} values
|
|
* @return {!Promise<!Array<string>>}
|
|
*/
|
|
async select(selector, ...values) {
|
|
return await this._frameManager.mainFrame().select(selector, ...values);
|
|
}
|
|
|
|
async close() {
|
|
await this._session.send('Browser.closePage' );
|
|
}
|
|
|
|
async content() {
|
|
return await this._frameManager.mainFrame().content();
|
|
}
|
|
|
|
/**
|
|
* @param {string} html
|
|
*/
|
|
async setContent(html) {
|
|
return await this._frameManager.mainFrame().setContent(html);
|
|
}
|
|
|
|
_onClosed() {
|
|
this._isClosed = true;
|
|
this._frameManager.dispose();
|
|
helper.removeEventListeners(this._eventListeners);
|
|
this.emit(Events.Page.Close);
|
|
}
|
|
|
|
_onConsole({type, args, frameId}) {
|
|
const frame = this._frameManager.frame(frameId);
|
|
this.emit(Events.Page.Console, new ConsoleMessage(type, args.map(arg => createHandle(frame._executionContext, arg))));
|
|
}
|
|
|
|
/**
|
|
* @return {boolean}
|
|
*/
|
|
isClosed() {
|
|
return this._isClosed;
|
|
}
|
|
}
|
|
|
|
class ConsoleMessage {
|
|
/**
|
|
* @param {string} type
|
|
* @param {!Array<!JSHandle>} args
|
|
*/
|
|
constructor(type, args) {
|
|
this._type = type;
|
|
this._args = args;
|
|
}
|
|
|
|
/**
|
|
* @return {string}
|
|
*/
|
|
type() {
|
|
return this._type;
|
|
}
|
|
|
|
/**
|
|
* @return {!Array<!JSHandle>}
|
|
*/
|
|
args() {
|
|
return this._args;
|
|
}
|
|
|
|
/**
|
|
* @return {string}
|
|
*/
|
|
text() {
|
|
return this._args.map(arg => {
|
|
if (arg._objectId)
|
|
return arg.toString();
|
|
return arg._deserializeValue(arg._protocolValue);
|
|
}).join(' ');
|
|
}
|
|
}
|
|
|
|
function getScreenshotMimeType(options) {
|
|
// options.type takes precedence over inferring the type from options.path
|
|
// because it may be a 0-length file with no extension created beforehand (i.e. as a temp file).
|
|
if (options.type) {
|
|
if (options.type === 'png')
|
|
return 'image/png';
|
|
if (options.type === 'jpeg')
|
|
return 'image/jpeg';
|
|
throw new Error('Unknown options.type value: ' + options.type);
|
|
}
|
|
if (options.path) {
|
|
const fileType = mime.getType(options.path);
|
|
if (fileType === 'image/png' || fileType === 'image/jpeg')
|
|
return fileType;
|
|
throw new Error('Unsupported screnshot mime type: ' + fileType);
|
|
}
|
|
return 'image/png';
|
|
}
|
|
|
|
/**
|
|
* @internal
|
|
*/
|
|
class NextNavigationWatchdog {
|
|
constructor(session, navigatedFrame) {
|
|
this._navigatedFrame = navigatedFrame;
|
|
this._promise = new Promise(x => this._resolveCallback = x);
|
|
this._navigation = null;
|
|
this._eventListeners = [
|
|
helper.addEventListener(session, 'Page.navigationStarted', this._onNavigationStarted.bind(this)),
|
|
helper.addEventListener(session, 'Page.sameDocumentNavigation', this._onSameDocumentNavigation.bind(this)),
|
|
];
|
|
}
|
|
|
|
promise() {
|
|
return this._promise;
|
|
}
|
|
|
|
navigation() {
|
|
return this._navigation;
|
|
}
|
|
|
|
_onNavigationStarted(params) {
|
|
if (params.frameId === this._navigatedFrame._frameId) {
|
|
this._navigation = {
|
|
navigationId: params.navigationId,
|
|
url: params.url,
|
|
};
|
|
this._resolveCallback();
|
|
}
|
|
}
|
|
|
|
_onSameDocumentNavigation(params) {
|
|
if (params.frameId === this._navigatedFrame._frameId) {
|
|
this._navigation = {
|
|
navigationId: null,
|
|
};
|
|
this._resolveCallback();
|
|
}
|
|
}
|
|
|
|
dispose() {
|
|
helper.removeEventListeners(this._eventListeners);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @internal
|
|
*/
|
|
class NavigationWatchdog {
|
|
constructor(session, navigatedFrame, targetNavigationId, targetURL, firedEvents) {
|
|
this._navigatedFrame = navigatedFrame;
|
|
this._targetNavigationId = targetNavigationId;
|
|
this._firedEvents = firedEvents;
|
|
this._targetURL = targetURL;
|
|
|
|
this._promise = new Promise(x => this._resolveCallback = x);
|
|
|
|
const check = this._checkNavigationComplete.bind(this);
|
|
this._eventListeners = [
|
|
helper.addEventListener(session, 'Page.eventFired', check),
|
|
helper.addEventListener(session, 'Page.frameAttached', check),
|
|
helper.addEventListener(session, 'Page.frameDetached', check),
|
|
helper.addEventListener(session, 'Page.navigationStarted', check),
|
|
helper.addEventListener(session, 'Page.navigationCommitted', check),
|
|
helper.addEventListener(session, 'Page.navigationAborted', this._onNavigationAborted.bind(this)),
|
|
];
|
|
check();
|
|
}
|
|
|
|
_checkNavigationComplete() {
|
|
if (this._navigatedFrame._lastCommittedNavigationId === this._targetNavigationId
|
|
&& checkFiredEvents(this._navigatedFrame, this._firedEvents)) {
|
|
this._resolveCallback(null);
|
|
}
|
|
|
|
function checkFiredEvents(frame, firedEvents) {
|
|
for (const subframe of frame._children) {
|
|
if (!checkFiredEvents(subframe, firedEvents))
|
|
return false;
|
|
}
|
|
return firedEvents.every(event => frame._firedEvents.has(event));
|
|
}
|
|
}
|
|
|
|
_onNavigationAborted(params) {
|
|
if (params.frameId === this._navigatedFrame._frameId && params.navigationId === this._targetNavigationId)
|
|
this._resolveCallback(new Error('Navigation to ' + this._targetURL + ' failed: ' + params.errorText));
|
|
}
|
|
|
|
promise() {
|
|
return this._promise;
|
|
}
|
|
|
|
dispose() {
|
|
helper.removeEventListeners(this._eventListeners);
|
|
}
|
|
}
|
|
|
|
module.exports = {Page, ConsoleMessage};
|