mirror of
https://github.com/puppeteer/puppeteer
synced 2024-06-14 14:02:48 +00:00
1837 lines
52 KiB
JavaScript
1837 lines
52 KiB
JavaScript
const {helper, assert, debugError} = 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 writeFileAsync = util.promisify(fs.writeFile);
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const readFileAsync = util.promisify(fs.readFile);
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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._mainFrame = null;
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this._frames = new Map();
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this._eventListeners = [
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helper.addEventListener(this._session, 'Page.eventFired', this._onEventFired.bind(this)),
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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.frameAttached', this._onFrameAttached.bind(this)),
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helper.addEventListener(this._session, 'Page.frameDetached', this._onFrameDetached.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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];
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this._viewport = null;
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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(Page.Events.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._mainFrame.url();
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}
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frames() {
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/** @type {!Array<!Frame>} */
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let frames = [];
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collect(this._mainFrame);
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return frames;
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function collect(frame) {
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frames.push(frame);
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for (const subframe of frame._children)
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collect(subframe);
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}
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}
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_onDialogOpened(params) {
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this.emit(Page.Events.Dialog, new Dialog(this._session, params));
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}
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_onFrameAttached(params) {
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const frame = new Frame(this._session, this, params.frameId);
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const parentFrame = this._frames.get(params.parentFrameId) || null;
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if (parentFrame) {
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frame._parentFrame = parentFrame;
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parentFrame._children.add(frame);
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} else {
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assert(!this._mainFrame, 'INTERNAL ERROR: re-attaching main frame!');
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this._mainFrame = frame;
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}
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this._frames.set(params.frameId, frame);
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this.emit(Page.Events.FrameAttached, frame);
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}
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mainFrame() {
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return this._mainFrame;
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}
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_onFrameDetached(params) {
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const frame = this._frames.get(params.frameId);
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this._frames.delete(params.frameId);
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frame._detach();
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this.emit(Page.Events.FrameDetached, frame);
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}
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_onNavigationCommitted(params) {
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const frame = this._frames.get(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(Page.Events.FrameNavigated, frame);
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}
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_onSameDocumentNavigation(params) {
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const frame = this._frames.get(params.frameId);
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frame._url = params.url;
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this.emit(Page.Events.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._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._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._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._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._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._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._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._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._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._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._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._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._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._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._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._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._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 $(selector) {
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return await this._mainFrame.$(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 $$(selector) {
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return await this._mainFrame.$$(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 $eval(selector, pageFunction, ...args) {
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return await this._mainFrame.$eval(selector, pageFunction, ...args);
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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 $$eval(selector, pageFunction, ...args) {
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return await this._mainFrame.$$eval(selector, pageFunction, ...args);
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}
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|
|
|
/**
|
|
* @param {string} expression
|
|
* @return {!Promise<!Array<!ElementHandle>>}
|
|
*/
|
|
async $x(expression) {
|
|
return await this._mainFrame.$x(expression);
|
|
}
|
|
|
|
async evaluateHandle(pageFunction, ...args) {
|
|
return await this._mainFrame.evaluateHandle(pageFunction, ...args);
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {!Array<string>} values
|
|
* @return {!Promise<!Array<string>>}
|
|
*/
|
|
async select(selector, ...values) {
|
|
return await this._mainFrame.select(selector, ...values);
|
|
}
|
|
|
|
async close() {
|
|
await this._session.send('Browser.closePage' );
|
|
}
|
|
|
|
async content() {
|
|
return await this._mainFrame.content();
|
|
}
|
|
|
|
/**
|
|
* @param {string} html
|
|
*/
|
|
async setContent(html) {
|
|
return await this._mainFrame.setContent(html);
|
|
}
|
|
|
|
_onClosed() {
|
|
this._isClosed = true;
|
|
helper.removeEventListeners(this._eventListeners);
|
|
this.emit(Page.Events.Close);
|
|
}
|
|
|
|
_onEventFired({frameId, name}) {
|
|
const frame = this._frames.get(frameId);
|
|
frame._firedEvents.add(name.toLowerCase());
|
|
if (frame === this._mainFrame) {
|
|
if (name === 'load')
|
|
this.emit(Page.Events.Load);
|
|
else if (name === 'DOMContentLoaded')
|
|
this.emit(Page.Events.DOMContentLoaded);
|
|
}
|
|
}
|
|
|
|
_onLoadFired({frameId}) {
|
|
const frame = this._frames.get(frameId);
|
|
frame._firedEvents.add('load');
|
|
}
|
|
|
|
_onConsole({type, args, frameId}) {
|
|
const frame = this._frames.get(frameId);
|
|
this.emit(Page.Events.Console, new ConsoleMessage(type, args.map(arg => createHandle(frame, arg))));
|
|
}
|
|
|
|
/**
|
|
* @return {boolean}
|
|
*/
|
|
isClosed() {
|
|
return this._isClosed;
|
|
}
|
|
}
|
|
|
|
/** @enum {string} */
|
|
Page.Events = {
|
|
Close: 'close',
|
|
Console: 'console',
|
|
Dialog: 'dialog',
|
|
DOMContentLoaded: 'domcontentloaded',
|
|
FrameAttached: 'frameattached',
|
|
FrameDetached: 'framedetached',
|
|
FrameNavigated: 'framenavigated',
|
|
Load: 'load',
|
|
PageError: 'pageerror'
|
|
}
|
|
|
|
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(' ');
|
|
}
|
|
}
|
|
|
|
class JSHandle {
|
|
|
|
/**
|
|
* @param {!Frame} frame
|
|
* @param {*} payload
|
|
*/
|
|
constructor(frame, payload) {
|
|
this._frame = frame;
|
|
this._session = this._frame._session;
|
|
this._frameId = this._frame._frameId;
|
|
this._objectId = payload.objectId;
|
|
this._type = payload.type;
|
|
this._subtype = payload.subtype;
|
|
this._protocolValue = {
|
|
unserializableValue: payload.unserializableValue,
|
|
value: payload.value,
|
|
objectId: payload.objectId,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
* @return {string}
|
|
*/
|
|
toString() {
|
|
if (this._objectId)
|
|
return 'JSHandle@' + (this._subtype || this._type);
|
|
return 'JSHandle:' + this._deserializeValue(this._protocolValue);
|
|
}
|
|
|
|
/**
|
|
* @param {string} propertyName
|
|
* @return {!Promise<?JSHandle>}
|
|
*/
|
|
async getProperty(propertyName) {
|
|
const objectHandle = await this._frame.evaluateHandle((object, propertyName) => {
|
|
const result = {__proto__: null};
|
|
result[propertyName] = object[propertyName];
|
|
return result;
|
|
}, this, propertyName);
|
|
const properties = await objectHandle.getProperties();
|
|
const result = properties.get(propertyName) || null;
|
|
await objectHandle.dispose();
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @return {!Promise<Map<string, !JSHandle>>}
|
|
*/
|
|
async getProperties() {
|
|
const response = await this._session.send('Page.getObjectProperties', {
|
|
frameId: this._frameId,
|
|
objectId: this._objectId,
|
|
});
|
|
const result = new Map();
|
|
for (const property of response.properties) {
|
|
result.set(property.name, createHandle(this._frame, property.value, null));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
_deserializeValue({unserializableValue, value}) {
|
|
if (unserializableValue === 'Infinity')
|
|
return Infinity;
|
|
if (unserializableValue === '-Infinity')
|
|
return -Infinity;
|
|
if (unserializableValue === '-0')
|
|
return -0;
|
|
if (unserializableValue === 'NaN')
|
|
return NaN;
|
|
return value;
|
|
}
|
|
|
|
async jsonValue() {
|
|
if (!this._objectId)
|
|
return this._deserializeValue(this._protocolValue);
|
|
const simpleValue = await this._session.send('Page.evaluate', {
|
|
frameId: this._frameId,
|
|
returnByValue: true,
|
|
functionText: (e => e).toString(),
|
|
args: [this._protocolValue],
|
|
});
|
|
return this._deserializeValue(simpleValue.result);
|
|
}
|
|
|
|
/**
|
|
* @return {?ElementHandle}
|
|
*/
|
|
asElement() {
|
|
return null;
|
|
}
|
|
|
|
async dispose() {
|
|
if (!this._objectId)
|
|
return;
|
|
await this._session.send('Page.disposeObject', {
|
|
frameId: this._frameId,
|
|
objectId: this._objectId,
|
|
});
|
|
}
|
|
}
|
|
|
|
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';
|
|
}
|
|
|
|
class ElementHandle extends JSHandle {
|
|
/**
|
|
* @return {?Frame}
|
|
*/
|
|
async contentFrame() {
|
|
const {frameId} = await this._session.send('Page.contentFrame', {
|
|
frameId: this._frameId,
|
|
objectId: this._objectId,
|
|
});
|
|
if (!frameId)
|
|
return null;
|
|
const frame = this._frame._page._frames.get(frameId);
|
|
return frame;
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
* @return {!ElementHandle}
|
|
*/
|
|
asElement() {
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* @return {!Promise<{width: number, height: number, x: number, y: number}>}
|
|
*/
|
|
async boundingBox() {
|
|
return await this._session.send('Page.getBoundingBox', {
|
|
frameId: this._frameId,
|
|
objectId: this._objectId,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param {{encoding?: string, path?: string}} options
|
|
*/
|
|
async screenshot(options = {}) {
|
|
const clip = await this._session.send('Page.getBoundingBox', {
|
|
frameId: this._frameId,
|
|
objectId: this._objectId,
|
|
});
|
|
if (!clip)
|
|
throw new Error('Node is either not visible or not an HTMLElement');
|
|
assert(clip.width, 'Node has 0 width.');
|
|
assert(clip.height, 'Node has 0 height.');
|
|
await this._scrollIntoViewIfNeeded();
|
|
|
|
return await this._frame._page.screenshot(Object.assign({}, options, {
|
|
clip: {
|
|
x: Math.round(clip.x),
|
|
y: Math.round(clip.y),
|
|
width: Math.round(clip.width),
|
|
height: Math.round(clip.height),
|
|
},
|
|
}));
|
|
}
|
|
|
|
/**
|
|
* @returns {!Promise<boolean>}
|
|
*/
|
|
isIntersectingViewport() {
|
|
return this._frame.evaluate(async element => {
|
|
const visibleRatio = await new Promise(resolve => {
|
|
const observer = new IntersectionObserver(entries => {
|
|
resolve(entries[0].intersectionRatio);
|
|
observer.disconnect();
|
|
});
|
|
observer.observe(element);
|
|
// Firefox doesn't call IntersectionObserver callback unless
|
|
// there are rafs.
|
|
requestAnimationFrame(() => {});
|
|
});
|
|
return visibleRatio > 0;
|
|
}, this);
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @return {!Promise<?ElementHandle>}
|
|
*/
|
|
async $(selector) {
|
|
const handle = await this._frame.evaluateHandle(
|
|
(element, selector) => element.querySelector(selector),
|
|
this, selector
|
|
);
|
|
const element = handle.asElement();
|
|
if (element)
|
|
return element;
|
|
await handle.dispose();
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @return {!Promise<!Array<!ElementHandle>>}
|
|
*/
|
|
async $$(selector) {
|
|
const arrayHandle = await this._frame.evaluateHandle(
|
|
(element, selector) => element.querySelectorAll(selector),
|
|
this, selector
|
|
);
|
|
const properties = await arrayHandle.getProperties();
|
|
await arrayHandle.dispose();
|
|
const result = [];
|
|
for (const property of properties.values()) {
|
|
const elementHandle = property.asElement();
|
|
if (elementHandle)
|
|
result.push(elementHandle);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {Function|String} pageFunction
|
|
* @param {!Array<*>} args
|
|
* @return {!Promise<(!Object|undefined)>}
|
|
*/
|
|
async $eval(selector, pageFunction, ...args) {
|
|
const elementHandle = await this.$(selector);
|
|
if (!elementHandle)
|
|
throw new Error(`Error: failed to find element matching selector "${selector}"`);
|
|
const result = await this._frame.evaluate(pageFunction, elementHandle, ...args);
|
|
await elementHandle.dispose();
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {Function|String} pageFunction
|
|
* @param {!Array<*>} args
|
|
* @return {!Promise<(!Object|undefined)>}
|
|
*/
|
|
async $$eval(selector, pageFunction, ...args) {
|
|
const arrayHandle = await this._frame.evaluateHandle(
|
|
(element, selector) => Array.from(element.querySelectorAll(selector)),
|
|
this, selector
|
|
);
|
|
|
|
const result = await this._frame.evaluate(pageFunction, arrayHandle, ...args);
|
|
await arrayHandle.dispose();
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @param {string} expression
|
|
* @return {!Promise<!Array<!ElementHandle>>}
|
|
*/
|
|
async $x(expression) {
|
|
const arrayHandle = await this._frame.evaluateHandle(
|
|
(element, expression) => {
|
|
const document = element.ownerDocument || element;
|
|
const iterator = document.evaluate(expression, element, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE);
|
|
const array = [];
|
|
let item;
|
|
while ((item = iterator.iterateNext()))
|
|
array.push(item);
|
|
return array;
|
|
},
|
|
this, expression
|
|
);
|
|
const properties = await arrayHandle.getProperties();
|
|
await arrayHandle.dispose();
|
|
const result = [];
|
|
for (const property of properties.values()) {
|
|
const elementHandle = property.asElement();
|
|
if (elementHandle)
|
|
result.push(elementHandle);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
async _scrollIntoViewIfNeeded() {
|
|
const error = await this._frame.evaluate(async(element) => {
|
|
if (!element.isConnected)
|
|
return 'Node is detached from document';
|
|
if (element.nodeType !== Node.ELEMENT_NODE)
|
|
return 'Node is not of type HTMLElement';
|
|
const visibleRatio = await new Promise(resolve => {
|
|
const observer = new IntersectionObserver(entries => {
|
|
resolve(entries[0].intersectionRatio);
|
|
observer.disconnect();
|
|
});
|
|
observer.observe(element);
|
|
// Firefox doesn't call IntersectionObserver callback unless
|
|
// there are rafs.
|
|
requestAnimationFrame(() => {});
|
|
});
|
|
if (visibleRatio !== 1.0)
|
|
element.scrollIntoView({block: 'center', inline: 'center', behavior: 'instant'});
|
|
return false;
|
|
}, this);
|
|
if (error)
|
|
throw new Error(error);
|
|
}
|
|
|
|
/**
|
|
* @param {!{delay?: number, button?: string, clickCount?: number}=} options
|
|
*/
|
|
async click(options) {
|
|
await this._scrollIntoViewIfNeeded();
|
|
const {x, y} = await this._clickablePoint();
|
|
await this._frame._page.mouse.click(x, y, options);
|
|
}
|
|
|
|
async hover() {
|
|
await this._scrollIntoViewIfNeeded();
|
|
const {x, y} = await this._clickablePoint();
|
|
await this._frame._page.mouse.move(x, y);
|
|
}
|
|
|
|
async focus() {
|
|
await this._frame.evaluate(element => element.focus(), this);
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
* @param {{delay: (number|undefined)}=} options
|
|
*/
|
|
async type(text, options) {
|
|
await this.focus();
|
|
await this._frame._page.keyboard.type(text, options);
|
|
}
|
|
|
|
/**
|
|
* @param {string} key
|
|
* @param {!{delay?: number}=} options
|
|
*/
|
|
async press(key, options) {
|
|
await this.focus();
|
|
await this._frame._page.keyboard.press(key, options);
|
|
}
|
|
|
|
|
|
/**
|
|
* @return {!Promise<!{x: number, y: number}>}
|
|
*/
|
|
async _clickablePoint() {
|
|
const result = await this._session.send('Page.getContentQuads', {
|
|
frameId: this._frameId,
|
|
objectId: this._objectId,
|
|
}).catch(debugError);
|
|
if (!result || !result.quads.length)
|
|
throw new Error('Node is either not visible or not an HTMLElement');
|
|
// Filter out quads that have too small area to click into.
|
|
const quads = result.quads.filter(quad => computeQuadArea(quad) > 1);
|
|
if (!quads.length)
|
|
throw new Error('Node is either not visible or not an HTMLElement');
|
|
// Return the middle point of the first quad.
|
|
return computeQuadCenter(quads[0]);
|
|
}
|
|
}
|
|
|
|
function createHandle(frame, result, exceptionDetails) {
|
|
if (exceptionDetails) {
|
|
if (exceptionDetails.value)
|
|
throw new Error('Evaluation failed: ' + JSON.stringify(exceptionDetails.value));
|
|
else
|
|
throw new Error('Evaluation failed: ' + exceptionDetails.text + '\n' + exceptionDetails.stack);
|
|
}
|
|
return result.subtype === 'node' ? new ElementHandle(frame, result) : new JSHandle(frame, result);
|
|
}
|
|
|
|
class Frame {
|
|
/**
|
|
* @param {*} session
|
|
* @param {!Page} page
|
|
* @param {string} frameId
|
|
*/
|
|
constructor(session, page, frameId) {
|
|
this._session = session;
|
|
this._page = page;
|
|
this._frameId = frameId;
|
|
/** @type {?Frame} */
|
|
this._parentFrame = null;
|
|
this._url = '';
|
|
this._name = '';
|
|
/** @type {!Set<!Frame>} */
|
|
this._children = new Set();
|
|
this._isDetached = false;
|
|
|
|
this._firedEvents = new Set();
|
|
|
|
/** @type {!Set<!WaitTask>} */
|
|
this._waitTasks = new Set();
|
|
this._documentPromise = null;
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {!{delay?: number, button?: string, clickCount?: number}=} options
|
|
*/
|
|
async click(selector, options = {}) {
|
|
const handle = await this.$(selector);
|
|
assert(handle, 'No node found for selector: ' + selector);
|
|
await handle.click(options);
|
|
await handle.dispose();
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {string} text
|
|
* @param {{delay: (number|undefined)}=} options
|
|
*/
|
|
async type(selector, text, options) {
|
|
const handle = await this.$(selector);
|
|
assert(handle, 'No node found for selector: ' + selector);
|
|
await handle.type(text, options);
|
|
await handle.dispose();
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
*/
|
|
async focus(selector) {
|
|
const handle = await this.$(selector);
|
|
assert(handle, 'No node found for selector: ' + selector);
|
|
await handle.focus();
|
|
await handle.dispose();
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
*/
|
|
async hover(selector) {
|
|
const handle = await this.$(selector);
|
|
assert(handle, 'No node found for selector: ' + selector);
|
|
await handle.hover();
|
|
await handle.dispose();
|
|
}
|
|
|
|
_detach() {
|
|
this._parentFrame._children.delete(this);
|
|
this._parentFrame = null;
|
|
this._isDetached = true;
|
|
for (const waitTask of this._waitTasks)
|
|
waitTask.terminate(new Error('waitForFunction failed: frame got detached.'));
|
|
}
|
|
|
|
_navigated(url, name, navigationId) {
|
|
this._url = url;
|
|
this._name = name;
|
|
this._lastCommittedNavigationId = navigationId;
|
|
this._documentPromise = null;
|
|
this._firedEvents.clear();
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {!Array<string>} values
|
|
* @return {!Promise<!Array<string>>}
|
|
*/
|
|
select(selector, ...values) {
|
|
for (const value of values)
|
|
assert(helper.isString(value), 'Values must be strings. Found value "' + value + '" of type "' + (typeof value) + '"');
|
|
return this.$eval(selector, (element, values) => {
|
|
if (element.nodeName.toLowerCase() !== 'select')
|
|
throw new Error('Element is not a <select> element.');
|
|
|
|
const options = Array.from(element.options);
|
|
element.value = undefined;
|
|
for (const option of options) {
|
|
option.selected = values.includes(option.value);
|
|
if (option.selected && !element.multiple)
|
|
break;
|
|
}
|
|
element.dispatchEvent(new Event('input', { 'bubbles': true }));
|
|
element.dispatchEvent(new Event('change', { 'bubbles': true }));
|
|
return options.filter(option => option.selected).map(option => option.value);
|
|
}, values);
|
|
}
|
|
|
|
/**
|
|
* @param {(string|number|Function)} selectorOrFunctionOrTimeout
|
|
* @param {!{polling?: string|number, timeout?: number, visible?: boolean, hidden?: boolean}=} options
|
|
* @param {!Array<*>} args
|
|
* @return {!Promise<!JSHandle>}
|
|
*/
|
|
waitFor(selectorOrFunctionOrTimeout, options, ...args) {
|
|
const xPathPattern = '//';
|
|
|
|
if (helper.isString(selectorOrFunctionOrTimeout)) {
|
|
const string = /** @type {string} */ (selectorOrFunctionOrTimeout);
|
|
if (string.startsWith(xPathPattern))
|
|
return this.waitForXPath(string, options);
|
|
return this.waitForSelector(string, options);
|
|
}
|
|
if (helper.isNumber(selectorOrFunctionOrTimeout))
|
|
return new Promise(fulfill => setTimeout(fulfill, /** @type {number} */ (selectorOrFunctionOrTimeout)));
|
|
if (typeof selectorOrFunctionOrTimeout === 'function')
|
|
return this.waitForFunction(selectorOrFunctionOrTimeout, options, ...args);
|
|
return Promise.reject(new Error('Unsupported target type: ' + (typeof selectorOrFunctionOrTimeout)));
|
|
}
|
|
|
|
/**
|
|
* @param {Function|string} pageFunction
|
|
* @param {!{polling?: string|number, timeout?: number}=} options
|
|
* @return {!Promise<!JSHandle>}
|
|
*/
|
|
waitForFunction(pageFunction, options = {}, ...args) {
|
|
const {
|
|
polling = 'raf',
|
|
timeout = 30000
|
|
} = options;
|
|
return new WaitTask(this, pageFunction, 'function', polling, timeout, ...args).promise;
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {!{timeout?: number, visible?: boolean, hidden?: boolean}=} options
|
|
* @return {!Promise<!ElementHandle>}
|
|
*/
|
|
waitForSelector(selector, options) {
|
|
return this._waitForSelectorOrXPath(selector, false, options);
|
|
}
|
|
|
|
/**
|
|
* @param {string} xpath
|
|
* @param {!{timeout?: number, visible?: boolean, hidden?: boolean}=} options
|
|
* @return {!Promise<!ElementHandle>}
|
|
*/
|
|
waitForXPath(xpath, options) {
|
|
return this._waitForSelectorOrXPath(xpath, true, options);
|
|
}
|
|
|
|
/**
|
|
* @param {string} selectorOrXPath
|
|
* @param {boolean} isXPath
|
|
* @param {!{timeout?: number, visible?: boolean, hidden?: boolean}=} options
|
|
* @return {!Promise<!ElementHandle>}
|
|
*/
|
|
_waitForSelectorOrXPath(selectorOrXPath, isXPath, options = {}) {
|
|
const {
|
|
visible: waitForVisible = false,
|
|
hidden: waitForHidden = false,
|
|
timeout = 30000
|
|
} = options;
|
|
const polling = waitForVisible || waitForHidden ? 'raf' : 'mutation';
|
|
const title = `${isXPath ? 'XPath' : 'selector'} "${selectorOrXPath}"${waitForHidden ? ' to be hidden' : ''}`;
|
|
return new WaitTask(this, predicate, title, polling, timeout, selectorOrXPath, isXPath, waitForVisible, waitForHidden).promise;
|
|
|
|
/**
|
|
* @param {string} selectorOrXPath
|
|
* @param {boolean} isXPath
|
|
* @param {boolean} waitForVisible
|
|
* @param {boolean} waitForHidden
|
|
* @return {?Node|boolean}
|
|
*/
|
|
function predicate(selectorOrXPath, isXPath, waitForVisible, waitForHidden) {
|
|
const node = isXPath
|
|
? document.evaluate(selectorOrXPath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue
|
|
: document.querySelector(selectorOrXPath);
|
|
if (!node)
|
|
return waitForHidden;
|
|
if (!waitForVisible && !waitForHidden)
|
|
return node;
|
|
const element = /** @type {Element} */ (node.nodeType === Node.TEXT_NODE ? node.parentElement : node);
|
|
|
|
const style = window.getComputedStyle(element);
|
|
const isVisible = style && style.visibility !== 'hidden' && hasVisibleBoundingBox();
|
|
const success = (waitForVisible === isVisible || waitForHidden === !isVisible);
|
|
return success ? node : null;
|
|
|
|
/**
|
|
* @return {boolean}
|
|
*/
|
|
function hasVisibleBoundingBox() {
|
|
const rect = element.getBoundingClientRect();
|
|
return !!(rect.top || rect.bottom || rect.width || rect.height);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return {!Promise<String>}
|
|
*/
|
|
async content() {
|
|
return await this.evaluate(() => {
|
|
let retVal = '';
|
|
if (document.doctype)
|
|
retVal = new XMLSerializer().serializeToString(document.doctype);
|
|
if (document.documentElement)
|
|
retVal += document.documentElement.outerHTML;
|
|
return retVal;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param {string} html
|
|
*/
|
|
async setContent(html) {
|
|
await this.evaluate(html => {
|
|
document.open();
|
|
document.write(html);
|
|
document.close();
|
|
}, html);
|
|
}
|
|
|
|
async evaluate(pageFunction, ...args) {
|
|
try {
|
|
const handle = await this.evaluateHandle(pageFunction, ...args);
|
|
const result = await handle.jsonValue();
|
|
await handle.dispose();
|
|
return result;
|
|
} catch (e) {
|
|
if (e.message.includes('cyclic object value') || e.message.includes('Object is not serializable'))
|
|
return undefined;
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
_document() {
|
|
if (!this._documentPromise)
|
|
this._documentPromise = this.evaluateHandle('document').then(handle => handle.asElement());
|
|
return this._documentPromise;
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @return {!Promise<?ElementHandle>}
|
|
*/
|
|
async $(selector) {
|
|
const document = await this._document();
|
|
return document.$(selector);
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @return {!Promise<!Array<!ElementHandle>>}
|
|
*/
|
|
async $$(selector) {
|
|
const document = await this._document();
|
|
return document.$$(selector);
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {Function|String} pageFunction
|
|
* @param {!Array<*>} args
|
|
* @return {!Promise<(!Object|undefined)>}
|
|
*/
|
|
async $eval(selector, pageFunction, ...args) {
|
|
const document = await this._document();
|
|
return document.$eval(selector, pageFunction, ...args);
|
|
}
|
|
|
|
/**
|
|
* @param {string} selector
|
|
* @param {Function|String} pageFunction
|
|
* @param {!Array<*>} args
|
|
* @return {!Promise<(!Object|undefined)>}
|
|
*/
|
|
async $$eval(selector, pageFunction, ...args) {
|
|
const document = await this._document();
|
|
return document.$$eval(selector, pageFunction, ...args);
|
|
}
|
|
|
|
/**
|
|
* @param {string} expression
|
|
* @return {!Promise<!Array<!ElementHandle>>}
|
|
*/
|
|
async $x(expression) {
|
|
const document = await this._document();
|
|
return document.$x(expression);
|
|
}
|
|
|
|
async evaluateHandle(pageFunction, ...args) {
|
|
if (helper.isString(pageFunction)) {
|
|
const payload = await this._session.send('Page.evaluate', {script: pageFunction, frameId: this._frameId});
|
|
return createHandle(this, payload.result, payload.exceptionDetails);
|
|
}
|
|
args = args.map(arg => {
|
|
if (arg instanceof JSHandle)
|
|
return arg._protocolValue;
|
|
if (Object.is(arg, Infinity))
|
|
return {unserializableValue: 'Infinity'};
|
|
if (Object.is(arg, -Infinity))
|
|
return {unserializableValue: '-Infinity'};
|
|
if (Object.is(arg, -0))
|
|
return {unserializableValue: '-0'};
|
|
if (Object.is(arg, NaN))
|
|
return {unserializableValue: 'NaN'};
|
|
return {value: arg};
|
|
});
|
|
const payload = await this._session.send('Page.evaluate', {
|
|
functionText: pageFunction.toString(),
|
|
args,
|
|
frameId: this._frameId
|
|
});
|
|
return createHandle(this, payload.result, payload.exceptionDetails);
|
|
}
|
|
|
|
/**
|
|
* @param {!{content?: string, path?: string, type?: string, url?: string}} options
|
|
* @return {!Promise<!ElementHandle>}
|
|
*/
|
|
async addScriptTag(options) {
|
|
if (typeof options.url === 'string') {
|
|
const url = options.url;
|
|
try {
|
|
return (await this.evaluateHandle(addScriptUrl, url, options.type)).asElement();
|
|
} catch (error) {
|
|
throw new Error(`Loading script from ${url} failed`);
|
|
}
|
|
}
|
|
|
|
if (typeof options.path === 'string') {
|
|
let contents = await readFileAsync(options.path, 'utf8');
|
|
contents += '//# sourceURL=' + options.path.replace(/\n/g, '');
|
|
return (await this.evaluateHandle(addScriptContent, contents, options.type)).asElement();
|
|
}
|
|
|
|
if (typeof options.content === 'string') {
|
|
return (await this.evaluateHandle(addScriptContent, options.content, options.type)).asElement();
|
|
}
|
|
|
|
throw new Error('Provide an object with a `url`, `path` or `content` property');
|
|
|
|
/**
|
|
* @param {string} url
|
|
* @param {string} type
|
|
* @return {!Promise<!HTMLElement>}
|
|
*/
|
|
async function addScriptUrl(url, type) {
|
|
const script = document.createElement('script');
|
|
script.src = url;
|
|
if (type)
|
|
script.type = type;
|
|
const promise = new Promise((res, rej) => {
|
|
script.onload = res;
|
|
script.onerror = rej;
|
|
});
|
|
document.head.appendChild(script);
|
|
await promise;
|
|
return script;
|
|
}
|
|
|
|
/**
|
|
* @param {string} content
|
|
* @param {string} type
|
|
* @return {!HTMLElement}
|
|
*/
|
|
function addScriptContent(content, type = 'text/javascript') {
|
|
const script = document.createElement('script');
|
|
script.type = type;
|
|
script.text = content;
|
|
let error = null;
|
|
script.onerror = e => error = e;
|
|
document.head.appendChild(script);
|
|
if (error)
|
|
throw error;
|
|
return script;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {!{content?: string, path?: string, url?: string}} options
|
|
* @return {!Promise<!ElementHandle>}
|
|
*/
|
|
async addStyleTag(options) {
|
|
if (typeof options.url === 'string') {
|
|
const url = options.url;
|
|
try {
|
|
return (await this.evaluateHandle(addStyleUrl, url)).asElement();
|
|
} catch (error) {
|
|
throw new Error(`Loading style from ${url} failed`);
|
|
}
|
|
}
|
|
|
|
if (typeof options.path === 'string') {
|
|
let contents = await readFileAsync(options.path, 'utf8');
|
|
contents += '/*# sourceURL=' + options.path.replace(/\n/g, '') + '*/';
|
|
return (await this.evaluateHandle(addStyleContent, contents)).asElement();
|
|
}
|
|
|
|
if (typeof options.content === 'string') {
|
|
return (await this.evaluateHandle(addStyleContent, options.content)).asElement();
|
|
}
|
|
|
|
throw new Error('Provide an object with a `url`, `path` or `content` property');
|
|
|
|
/**
|
|
* @param {string} url
|
|
* @return {!Promise<!HTMLElement>}
|
|
*/
|
|
async function addStyleUrl(url) {
|
|
const link = document.createElement('link');
|
|
link.rel = 'stylesheet';
|
|
link.href = url;
|
|
const promise = new Promise((res, rej) => {
|
|
link.onload = res;
|
|
link.onerror = rej;
|
|
});
|
|
document.head.appendChild(link);
|
|
await promise;
|
|
return link;
|
|
}
|
|
|
|
/**
|
|
* @param {string} content
|
|
* @return {!Promise<!HTMLElement>}
|
|
*/
|
|
async function addStyleContent(content) {
|
|
const style = document.createElement('style');
|
|
style.type = 'text/css';
|
|
style.appendChild(document.createTextNode(content));
|
|
const promise = new Promise((res, rej) => {
|
|
style.onload = res;
|
|
style.onerror = rej;
|
|
});
|
|
document.head.appendChild(style);
|
|
await promise;
|
|
return style;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return {!Promise<string>}
|
|
*/
|
|
async title() {
|
|
return this.evaluate(() => document.title);
|
|
}
|
|
|
|
name() {
|
|
return this._name;
|
|
}
|
|
|
|
isDetached() {
|
|
return this._isDetached;
|
|
}
|
|
|
|
childFrames() {
|
|
return Array.from(this._children);
|
|
}
|
|
|
|
url() {
|
|
return this._url;
|
|
}
|
|
|
|
parentFrame() {
|
|
return this._parentFrame;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @internal
|
|
*/
|
|
class WaitTask {
|
|
/**
|
|
* @param {!Frame} frame
|
|
* @param {Function|string} predicateBody
|
|
* @param {string|number} polling
|
|
* @param {number} timeout
|
|
* @param {!Array<*>} args
|
|
*/
|
|
constructor(frame, predicateBody, title, polling, timeout, ...args) {
|
|
if (helper.isString(polling))
|
|
assert(polling === 'raf' || polling === 'mutation', 'Unknown polling option: ' + polling);
|
|
else if (helper.isNumber(polling))
|
|
assert(polling > 0, 'Cannot poll with non-positive interval: ' + polling);
|
|
else
|
|
throw new Error('Unknown polling options: ' + polling);
|
|
|
|
this._frame = frame;
|
|
this._polling = polling;
|
|
this._timeout = timeout;
|
|
this._predicateBody = helper.isString(predicateBody) ? 'return ' + predicateBody : 'return (' + predicateBody + ')(...args)';
|
|
this._args = args;
|
|
this._runCount = 0;
|
|
frame._waitTasks.add(this);
|
|
this.promise = new Promise((resolve, reject) => {
|
|
this._resolve = resolve;
|
|
this._reject = reject;
|
|
});
|
|
// Since page navigation requires us to re-install the pageScript, we should track
|
|
// timeout on our end.
|
|
if (timeout) {
|
|
const timeoutError = new TimeoutError(`waiting for ${title} failed: timeout ${timeout}ms exceeded`);
|
|
this._timeoutTimer = setTimeout(() => this.terminate(timeoutError), timeout);
|
|
}
|
|
this.rerun();
|
|
}
|
|
|
|
/**
|
|
* @param {!Error} error
|
|
*/
|
|
terminate(error) {
|
|
this._terminated = true;
|
|
this._reject(error);
|
|
this._cleanup();
|
|
}
|
|
|
|
async rerun() {
|
|
const runCount = ++this._runCount;
|
|
/** @type {?JSHandle} */
|
|
let success = null;
|
|
let error = null;
|
|
try {
|
|
success = await this._frame.evaluateHandle(waitForPredicatePageFunction, this._predicateBody, this._polling, this._timeout, ...this._args);
|
|
} catch (e) {
|
|
error = e;
|
|
}
|
|
|
|
if (this._terminated || runCount !== this._runCount) {
|
|
if (success)
|
|
await success.dispose();
|
|
return;
|
|
}
|
|
|
|
// Ignore timeouts in pageScript - we track timeouts ourselves.
|
|
// If the frame's execution context has already changed, `frame.evaluate` will
|
|
// throw an error - ignore this predicate run altogether.
|
|
if (!error && await this._frame.evaluate(s => !s, success).catch(e => true)) {
|
|
await success.dispose();
|
|
return;
|
|
}
|
|
|
|
// When the page is navigated, the promise is rejected.
|
|
// Try again right away.
|
|
if (error && error.message.includes('Execution context was destroyed')) {
|
|
this.rerun();
|
|
return;
|
|
}
|
|
|
|
if (error)
|
|
this._reject(error);
|
|
else
|
|
this._resolve(success);
|
|
|
|
this._cleanup();
|
|
}
|
|
|
|
_cleanup() {
|
|
clearTimeout(this._timeoutTimer);
|
|
this._frame._waitTasks.delete(this);
|
|
this._runningTask = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} predicateBody
|
|
* @param {string} polling
|
|
* @param {number} timeout
|
|
* @return {!Promise<*>}
|
|
*/
|
|
async function waitForPredicatePageFunction(predicateBody, polling, timeout, ...args) {
|
|
const predicate = new Function('...args', predicateBody);
|
|
let timedOut = false;
|
|
if (timeout)
|
|
setTimeout(() => timedOut = true, timeout);
|
|
if (polling === 'raf')
|
|
return await pollRaf();
|
|
if (polling === 'mutation')
|
|
return await pollMutation();
|
|
if (typeof polling === 'number')
|
|
return await pollInterval(polling);
|
|
|
|
/**
|
|
* @return {!Promise<*>}
|
|
*/
|
|
function pollMutation() {
|
|
const success = predicate.apply(null, args);
|
|
if (success)
|
|
return Promise.resolve(success);
|
|
|
|
let fulfill;
|
|
const result = new Promise(x => fulfill = x);
|
|
const observer = new MutationObserver(mutations => {
|
|
if (timedOut) {
|
|
observer.disconnect();
|
|
fulfill();
|
|
}
|
|
const success = predicate.apply(null, args);
|
|
if (success) {
|
|
observer.disconnect();
|
|
fulfill(success);
|
|
}
|
|
});
|
|
observer.observe(document, {
|
|
childList: true,
|
|
subtree: true,
|
|
attributes: true
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @return {!Promise<*>}
|
|
*/
|
|
function pollRaf() {
|
|
let fulfill;
|
|
const result = new Promise(x => fulfill = x);
|
|
onRaf();
|
|
return result;
|
|
|
|
function onRaf() {
|
|
if (timedOut) {
|
|
fulfill();
|
|
return;
|
|
}
|
|
const success = predicate.apply(null, args);
|
|
if (success)
|
|
fulfill(success);
|
|
else
|
|
requestAnimationFrame(onRaf);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {number} pollInterval
|
|
* @return {!Promise<*>}
|
|
*/
|
|
function pollInterval(pollInterval) {
|
|
let fulfill;
|
|
const result = new Promise(x => fulfill = x);
|
|
onTimeout();
|
|
return result;
|
|
|
|
function onTimeout() {
|
|
if (timedOut) {
|
|
fulfill();
|
|
return;
|
|
}
|
|
const success = predicate.apply(null, args);
|
|
if (success)
|
|
fulfill(success);
|
|
else
|
|
setTimeout(onTimeout, pollInterval);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @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);
|
|
}
|
|
}
|
|
|
|
function computeQuadArea(quad) {
|
|
// Compute sum of all directed areas of adjacent triangles
|
|
// https://en.wikipedia.org/wiki/Polygon#Simple_polygons
|
|
let area = 0;
|
|
const points = [quad.p1, quad.p2, quad.p3, quad.p4];
|
|
for (let i = 0; i < points.length; ++i) {
|
|
const p1 = points[i];
|
|
const p2 = points[(i + 1) % points.length];
|
|
area += (p1.x * p2.y - p2.x * p1.y) / 2;
|
|
}
|
|
return Math.abs(area);
|
|
}
|
|
|
|
function computeQuadCenter(quad) {
|
|
let x = 0, y = 0;
|
|
for (const point of [quad.p1, quad.p2, quad.p3, quad.p4]) {
|
|
x += point.x;
|
|
y += point.y;
|
|
}
|
|
return {x: x / 4, y: y / 4};
|
|
}
|
|
|
|
|
|
module.exports = {Page};
|