puppeteer/experimental/puppeteer-firefox/lib/Page.js
2019-02-25 21:57:33 -08:00

747 lines
22 KiB
JavaScript

const {helper, debugError, assert} = require('./helper');
const {Keyboard, Mouse, Touchscreen} = require('./Input');
const {Dialog} = require('./Dialog');
const {TimeoutError} = require('./Errors');
const fs = require('fs');
const mime = require('mime');
const util = require('util');
const EventEmitter = require('events');
const {createHandle} = require('./JSHandle');
const {Events} = require('./Events');
const {FrameManager, normalizeWaitUntil} = require('./FrameManager');
const {NetworkManager} = require('./NetworkManager');
const {TimeoutSettings} = require('./TimeoutSettings');
const {NavigationWatchdog} = require('./NavigationWatchdog');
const {Accessibility} = require('./Accessibility');
const writeFileAsync = util.promisify(fs.writeFile);
class Page extends EventEmitter {
/**
*
* @param {!Puppeteer.JugglerSession} connection
* @param {!Puppeteer.Target} target
* @param {?Puppeteer.Viewport} defaultViewport
*/
static async create(session, target, defaultViewport) {
const page = new Page(session, target);
await Promise.all([
session.send('Page.enable'),
session.send('Network.enable'),
session.send('Runtime.enable'),
]);
if (defaultViewport)
await page.setViewport(defaultViewport);
return page;
}
/**
* @param {!PageSession} session
* @param {!Puppeteer.Target} target
*/
constructor(session, target) {
super();
this._timeoutSettings = new TimeoutSettings();
this._session = session;
this._target = target;
this._keyboard = new Keyboard(session);
this._mouse = new Mouse(session, this._keyboard);
this._touchscreen = new Touchscreen(session, this._keyboard, this._mouse);
this._accessibility = new Accessibility(session);
this._closed = false;
/** @type {!Map<string, Function>} */
this._pageBindings = new Map();
this._networkManager = new NetworkManager(session);
this._frameManager = new FrameManager(session, this, this._networkManager, this._timeoutSettings);
this._networkManager.setFrameManager(this._frameManager);
this._eventListeners = [
helper.addEventListener(this._session, 'Page.uncaughtError', this._onUncaughtError.bind(this)),
helper.addEventListener(this._session, 'Page.console', this._onConsole.bind(this)),
helper.addEventListener(this._session, 'Page.dialogOpened', this._onDialogOpened.bind(this)),
helper.addEventListener(this._session, 'Page.bindingCalled', this._onBindingCalled.bind(this)),
helper.addEventListener(this._frameManager, Events.FrameManager.Load, () => this.emit(Events.Page.Load)),
helper.addEventListener(this._frameManager, Events.FrameManager.DOMContentLoaded, () => this.emit(Events.Page.DOMContentLoaded)),
helper.addEventListener(this._frameManager, Events.FrameManager.FrameAttached, frame => this.emit(Events.Page.FrameAttached, frame)),
helper.addEventListener(this._frameManager, Events.FrameManager.FrameDetached, frame => this.emit(Events.Page.FrameDetached, frame)),
helper.addEventListener(this._frameManager, Events.FrameManager.FrameNavigated, frame => this.emit(Events.Page.FrameNavigated, frame)),
helper.addEventListener(this._networkManager, Events.NetworkManager.Request, request => this.emit(Events.Page.Request, request)),
helper.addEventListener(this._networkManager, Events.NetworkManager.Response, response => this.emit(Events.Page.Response, response)),
helper.addEventListener(this._networkManager, Events.NetworkManager.RequestFinished, request => this.emit(Events.Page.RequestFinished, request)),
helper.addEventListener(this._networkManager, Events.NetworkManager.RequestFailed, request => this.emit(Events.Page.RequestFailed, request)),
];
this._viewport = null;
this._target._isClosedPromise.then(() => {
this._closed = true;
this._frameManager.dispose();
this._networkManager.dispose();
helper.removeEventListeners(this._eventListeners);
this.emit(Events.Page.Close);
});
}
async setRequestInterception(enabled) {
await this._networkManager.setRequestInterception(enabled);
}
async setExtraHTTPHeaders(headers) {
await this._networkManager.setExtraHTTPHeaders(headers);
}
/**
* @param {?string} mediaType
*/
async emulateMedia(mediaType) {
assert(mediaType === 'screen' || mediaType === 'print' || mediaType === null, 'Unsupported media type: ' + mediaType);
await this._session.send('Page.setEmulatedMedia', {media: mediaType || ''});
}
/**
* @param {string} name
* @param {Function} puppeteerFunction
*/
async exposeFunction(name, puppeteerFunction) {
if (this._pageBindings.has(name))
throw new Error(`Failed to add page binding with name ${name}: window['${name}'] already exists!`);
this._pageBindings.set(name, puppeteerFunction);
const expression = helper.evaluationString(addPageBinding, name);
await this._session.send('Page.addBinding', {name: name});
await this._session.send('Page.addScriptToEvaluateOnNewDocument', {script: expression});
await Promise.all(this.frames().map(frame => frame.evaluate(expression).catch(debugError)));
function addPageBinding(bindingName) {
const binding = window[bindingName];
window[bindingName] = (...args) => {
const me = window[bindingName];
let callbacks = me['callbacks'];
if (!callbacks) {
callbacks = new Map();
me['callbacks'] = callbacks;
}
const seq = (me['lastSeq'] || 0) + 1;
me['lastSeq'] = seq;
const promise = new Promise((resolve, reject) => callbacks.set(seq, {resolve, reject}));
binding(JSON.stringify({name: bindingName, seq, args}));
return promise;
};
}
}
/**
* @param {!Protocol.Runtime.bindingCalledPayload} event
*/
async _onBindingCalled(event) {
const {name, seq, args} = JSON.parse(event.payload);
let expression = null;
try {
const result = await this._pageBindings.get(name)(...args);
expression = helper.evaluationString(deliverResult, name, seq, result);
} catch (error) {
if (error instanceof Error)
expression = helper.evaluationString(deliverError, name, seq, error.message, error.stack);
else
expression = helper.evaluationString(deliverErrorValue, name, seq, error);
}
this._session.send('Runtime.evaluate', { expression, executionContextId: event.executionContextId }).catch(debugError);
/**
* @param {string} name
* @param {number} seq
* @param {*} result
*/
function deliverResult(name, seq, result) {
window[name]['callbacks'].get(seq).resolve(result);
window[name]['callbacks'].delete(seq);
}
/**
* @param {string} name
* @param {number} seq
* @param {string} message
* @param {string} stack
*/
function deliverError(name, seq, message, stack) {
const error = new Error(message);
error.stack = stack;
window[name]['callbacks'].get(seq).reject(error);
window[name]['callbacks'].delete(seq);
}
/**
* @param {string} name
* @param {number} seq
* @param {*} value
*/
function deliverErrorValue(name, seq, value) {
window[name]['callbacks'].get(seq).reject(value);
window[name]['callbacks'].delete(seq);
}
}
/**
* @param {(string|Function)} urlOrPredicate
* @param {!{timeout?: number}=} options
* @return {!Promise<!Puppeteer.Request>}
*/
async waitForRequest(urlOrPredicate, options = {}) {
const {
timeout = this._timeoutSettings.timeout(),
} = options;
return helper.waitForEvent(this._networkManager, Events.NetworkManager.Request, request => {
if (helper.isString(urlOrPredicate))
return (urlOrPredicate === request.url());
if (typeof urlOrPredicate === 'function')
return !!(urlOrPredicate(request));
return false;
}, timeout);
}
/**
* @param {(string|Function)} urlOrPredicate
* @param {!{timeout?: number}=} options
* @return {!Promise<!Puppeteer.Response>}
*/
async waitForResponse(urlOrPredicate, options = {}) {
const {
timeout = this._timeoutSettings.timeout(),
} = options;
return helper.waitForEvent(this._networkManager, Events.NetworkManager.Response, response => {
if (helper.isString(urlOrPredicate))
return (urlOrPredicate === response.url());
if (typeof urlOrPredicate === 'function')
return !!(urlOrPredicate(response));
return false;
}, timeout);
}
/**
* @param {number} timeout
*/
setDefaultNavigationTimeout(timeout) {
this._timeoutSettings.setDefaultNavigationTimeout(timeout);
}
/**
* @param {number} timeout
*/
setDefaultTimeout(timeout) {
this._timeoutSettings.setDefaultTimeout(timeout);
}
/**
* @param {string} userAgent
*/
async setUserAgent(userAgent) {
await this._session.send('Page.setUserAgent', {userAgent});
}
/**
* @param {string} userAgent
*/
async setJavaScriptEnabled(enabled) {
await this._session.send('Page.setJavascriptEnabled', {enabled});
}
/**
* @param {string} userAgent
*/
async setCacheEnabled(enabled) {
await this._session.send('Page.setCacheDisabled', {cacheDisabled: !enabled});
}
/**
* @param {{viewport: !Puppeteer.Viewport, userAgent: string}} options
*/
async emulate(options) {
await Promise.all([
this.setViewport(options.viewport),
this.setUserAgent(options.userAgent),
]);
}
/**
* @return {BrowserContext}
*/
browserContext() {
return this._target.browserContext();
}
_onUncaughtError(params) {
const error = new Error(params.message);
error.stack = params.stack;
this.emit(Events.Page.PageError, error);
}
viewport() {
return this._viewport;
}
/**
* @param {!Puppeteer.Viewport} viewport
*/
async setViewport(viewport) {
const {
width,
height,
isMobile = false,
deviceScaleFactor = 1,
hasTouch = false,
isLandscape = false,
} = viewport;
await this._session.send('Page.setViewport', {
viewport: { width, height, isMobile, deviceScaleFactor, hasTouch, isLandscape },
});
const oldIsMobile = this._viewport ? this._viewport.isMobile : false;
const oldHasTouch = this._viewport ? this._viewport.hasTouch : false;
this._viewport = viewport;
if (oldIsMobile !== isMobile || oldHasTouch !== hasTouch)
await this.reload();
}
/**
* @param {function()|string} pageFunction
* @param {!Array<*>} args
*/
async evaluateOnNewDocument(pageFunction, ...args) {
const script = helper.evaluationString(pageFunction, ...args);
await this._session.send('Page.addScriptToEvaluateOnNewDocument', { script });
}
browser() {
return this._target.browser();
}
target() {
return this._target;
}
url() {
return this._frameManager.mainFrame().url();
}
frames() {
return this._frameManager.frames();
}
_onDialogOpened(params) {
this.emit(Events.Page.Dialog, new Dialog(this._session, params));
}
mainFrame() {
return this._frameManager.mainFrame();
}
get accessibility() {
return this._accessibility;
}
get keyboard(){
return this._keyboard;
}
get mouse(){
return this._mouse;
}
get touchscreen(){
return this._touchscreen;
}
/**
* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
*/
async waitForNavigation(options = {}) {
return this._frameManager.mainFrame().waitForNavigation(options);
}
/**
* @param {string} url
* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
*/
async goto(url, options = {}) {
return this._frameManager.mainFrame().goto(url, options);
}
/**
* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
*/
async goBack(options = {}) {
const {
timeout = this._timeoutSettings.navigationTimeout(),
waitUntil = ['load'],
} = options;
const frame = this._frameManager.mainFrame();
const normalizedWaitUntil = normalizeWaitUntil(waitUntil);
const {navigationId, navigationURL} = await this._session.send('Page.goBack', {
frameId: frame._frameId,
});
if (!navigationId)
return null;
const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
let timeoutCallback;
const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
const watchDog = new NavigationWatchdog(this._session, frame, this._networkManager, navigationId, navigationURL, normalizedWaitUntil);
const error = await Promise.race([
timeoutPromise,
watchDog.promise(),
]);
watchDog.dispose();
clearTimeout(timeoutId);
if (error)
throw error;
return watchDog.navigationResponse();
}
/**
* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
*/
async goForward(options = {}) {
const {
timeout = this._timeoutSettings.navigationTimeout(),
waitUntil = ['load'],
} = options;
const frame = this._frameManager.mainFrame();
const normalizedWaitUntil = normalizeWaitUntil(waitUntil);
const {navigationId, navigationURL} = await this._session.send('Page.goForward', {
frameId: frame._frameId,
});
if (!navigationId)
return null;
const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
let timeoutCallback;
const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
const watchDog = new NavigationWatchdog(this._session, frame, this._networkManager, navigationId, navigationURL, normalizedWaitUntil);
const error = await Promise.race([
timeoutPromise,
watchDog.promise(),
]);
watchDog.dispose();
clearTimeout(timeoutId);
if (error)
throw error;
return watchDog.navigationResponse();
}
/**
* @param {!{timeout?: number, waitUntil?: string|!Array<string>}} options
*/
async reload(options = {}) {
const {
timeout = this._timeoutSettings.navigationTimeout(),
waitUntil = ['load'],
} = options;
const frame = this._frameManager.mainFrame();
const normalizedWaitUntil = normalizeWaitUntil(waitUntil);
const {navigationId, navigationURL} = await this._session.send('Page.reload', {
frameId: frame._frameId,
});
if (!navigationId)
return null;
const timeoutError = new TimeoutError('Navigation Timeout Exceeded: ' + timeout + 'ms');
let timeoutCallback;
const timeoutPromise = new Promise(resolve => timeoutCallback = resolve.bind(null, timeoutError));
const timeoutId = timeout ? setTimeout(timeoutCallback, timeout) : null;
const watchDog = new NavigationWatchdog(this._session, frame, this._networkManager, navigationId, navigationURL, normalizedWaitUntil);
const error = await Promise.race([
timeoutPromise,
watchDog.promise(),
]);
watchDog.dispose();
clearTimeout(timeoutId);
if (error)
throw error;
return watchDog.navigationResponse();
}
/**
* @param {{fullPage?: boolean, clip?: {width: number, height: number, x: number, y: number}, encoding?: string, path?: string}} options
* @return {Promise<string|Buffer>}
*/
async screenshot(options = {}) {
const {data} = await this._session.send('Page.screenshot', {
mimeType: getScreenshotMimeType(options),
fullPage: options.fullPage,
clip: processClip(options.clip),
});
const buffer = options.encoding === 'base64' ? data : Buffer.from(data, 'base64');
if (options.path)
await writeFileAsync(options.path, buffer);
return buffer;
function processClip(clip) {
if (!clip)
return undefined;
const x = Math.round(clip.x);
const y = Math.round(clip.y);
const width = Math.round(clip.width + clip.x - x);
const height = Math.round(clip.height + clip.y - y);
return {x, y, width, height};
}
}
async evaluate(pageFunction, ...args) {
return await this._frameManager.mainFrame().evaluate(pageFunction, ...args);
}
/**
* @param {!{content?: string, path?: string, type?: string, url?: string}} options
* @return {!Promise<!ElementHandle>}
*/
async addScriptTag(options) {
return await this._frameManager.mainFrame().addScriptTag(options);
}
/**
* @param {!{content?: string, path?: string, url?: string}} options
* @return {!Promise<!ElementHandle>}
*/
async addStyleTag(options) {
return await this._frameManager.mainFrame().addStyleTag(options);
}
/**
* @param {string} selector
* @param {!{delay?: number, button?: string, clickCount?: number}=} options
*/
async click(selector, options = {}) {
return await this._frameManager.mainFrame().click(selector, options);
}
/**
* @param {string} selector
*/
tap(selector) {
return this.mainFrame().tap(selector);
}
/**
* @param {string} selector
* @param {string} text
* @param {{delay: (number|undefined)}=} options
*/
async type(selector, text, options) {
return await this._frameManager.mainFrame().type(selector, text, options);
}
/**
* @param {string} selector
*/
async focus(selector) {
return await this._frameManager.mainFrame().focus(selector);
}
/**
* @param {string} selector
*/
async hover(selector) {
return await this._frameManager.mainFrame().hover(selector);
}
/**
* @param {(string|number|Function)} selectorOrFunctionOrTimeout
* @param {!{polling?: string|number, timeout?: number, visible?: boolean, hidden?: boolean}=} options
* @param {!Array<*>} args
* @return {!Promise<!JSHandle>}
*/
async waitFor(selectorOrFunctionOrTimeout, options = {}, ...args) {
return await this._frameManager.mainFrame().waitFor(selectorOrFunctionOrTimeout, options, ...args);
}
/**
* @param {Function|string} pageFunction
* @param {!{polling?: string|number, timeout?: number}=} options
* @return {!Promise<!JSHandle>}
*/
async waitForFunction(pageFunction, options = {}, ...args) {
return await this._frameManager.mainFrame().waitForFunction(pageFunction, options, ...args);
}
/**
* @param {string} selector
* @param {!{timeout?: number, visible?: boolean, hidden?: boolean}=} options
* @return {!Promise<!ElementHandle>}
*/
async waitForSelector(selector, options = {}) {
return await this._frameManager.mainFrame().waitForSelector(selector, options);
}
/**
* @param {string} xpath
* @param {!{timeout?: number, visible?: boolean, hidden?: boolean}=} options
* @return {!Promise<!ElementHandle>}
*/
async waitForXPath(xpath, options = {}) {
return await this._frameManager.mainFrame().waitForXPath(xpath, options);
}
/**
* @return {!Promise<string>}
*/
async title() {
return await this._frameManager.mainFrame().title();
}
/**
* @param {string} selector
* @return {!Promise<?ElementHandle>}
*/
async $(selector) {
return await this._frameManager.mainFrame().$(selector);
}
/**
* @param {string} selector
* @return {!Promise<!Array<!ElementHandle>>}
*/
async $$(selector) {
return await this._frameManager.mainFrame().$$(selector);
}
/**
* @param {string} selector
* @param {Function|String} pageFunction
* @param {!Array<*>} args
* @return {!Promise<(!Object|undefined)>}
*/
async $eval(selector, pageFunction, ...args) {
return await this._frameManager.mainFrame().$eval(selector, pageFunction, ...args);
}
/**
* @param {string} selector
* @param {Function|String} pageFunction
* @param {!Array<*>} args
* @return {!Promise<(!Object|undefined)>}
*/
async $$eval(selector, pageFunction, ...args) {
return await this._frameManager.mainFrame().$$eval(selector, pageFunction, ...args);
}
/**
* @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(options = {}) {
const {
runBeforeUnload = false,
} = options;
await this._session.send('Page.close', { runBeforeUnload });
if (!runBeforeUnload)
await this._target._isClosedPromise;
}
async content() {
return await this._frameManager.mainFrame().content();
}
/**
* @param {string} html
*/
async setContent(html) {
return await this._frameManager.mainFrame().setContent(html);
}
_onClosed() {
}
_onConsole({type, args, executionContextId, location}) {
const context = this._frameManager.executionContextById(executionContextId);
this.emit(Events.Page.Console, new ConsoleMessage(type, args.map(arg => createHandle(context, arg)), location));
}
/**
* @return {boolean}
*/
isClosed() {
return this._closed;
}
}
class ConsoleMessage {
/**
* @param {string} type
* @param {!Array<!JSHandle>} args
*/
constructor(type, args, location) {
this._type = type;
this._args = args;
this._location = location;
}
location() {
return this._location;
}
/**
* @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';
}
module.exports = {Page, ConsoleMessage};