text: /**
   * Copyright 2017 Google Inc. All rights reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  const EventEmitter = require('events');
  const {helper, assert, debugError} = require('./helper');
  const {Events} = require('./Events');
  const {ExecutionContext, EVALUATION_SCRIPT_URL} = require('./ExecutionContext');
  const {LifecycleWatcher} = require('./LifecycleWatcher');
  const {DOMWorld} = require('./DOMWorld');
  const {NetworkManager} = require('./NetworkManager');
  
  const UTILITY_WORLD_NAME = '__puppeteer_utility_world__';
  
  class FrameManager extends EventEmitter {
    /**
     * @param {!Puppeteer.CDPSession} client
     * @param {!Puppeteer.Page} page
     * @param {boolean} ignoreHTTPSErrors
     * @param {!Puppeteer.TimeoutSettings} timeoutSettings
     */
    constructor(client, page, ignoreHTTPSErrors, timeoutSettings) {
      super();
      this._client = client;
      this._page = page;
      this._networkManager = new NetworkManager(client, ignoreHTTPSErrors, this);
      this._timeoutSettings = timeoutSettings;
      /** @type {!Map<string, !Frame>} */
      this._frames = new Map();
      /** @type {!Map<number, !ExecutionContext>} */
      this._contextIdToContext = new Map();
      /** @type {!Set<string>} */
      this._isolatedWorlds = new Set();
  
      this._client.on('Page.frameAttached', event => this._onFrameAttached(event.frameId, event.parentFrameId));
      this._client.on('Page.frameNavigated', event => this._onFrameNavigated(event.frame));
      this._client.on('Page.navigatedWithinDocument', event => this._onFrameNavigatedWithinDocument(event.frameId, event.url));
      this._client.on('Page.frameDetached', event => this._onFrameDetached(event.frameId));
      this._client.on('Page.frameStoppedLoading', event => this._onFrameStoppedLoading(event.frameId));
      this._client.on('Runtime.executionContextCreated', event => this._onExecutionContextCreated(event.context));
      this._client.on('Runtime.executionContextDestroyed', event => this._onExecutionContextDestroyed(event.executionContextId));
      this._client.on('Runtime.executionContextsCleared', event => this._onExecutionContextsCleared());
      this._client.on('Page.lifecycleEvent', event => this._onLifecycleEvent(event));
    }
  
    async initialize() {
      const [,{frameTree}] = await Promise.all([
        this._client.send('Page.enable'),
        this._client.send('Page.getFrameTree'),
      ]);
      this._handleFrameTree(frameTree);
      await Promise.all([
        this._client.send('Page.setLifecycleEventsEnabled', { enabled: true }),
        this._client.send('Runtime.enable', {}).then(() => this._ensureIsolatedWorld(UTILITY_WORLD_NAME)),
        this._networkManager.initialize(),
      ]);
    }
  
    /**
     * @return {!NetworkManager}
     */
    networkManager() {
      return this._networkManager;
    }
  
    /**
     * @param {!Puppeteer.Frame} frame
     * @param {string} url
     * @param {!{referer?: string, timeout?: number, waitUntil?: string|!Array<string>}=} options
     * @return {!Promise<?Puppeteer.Response>}
     */
    async navigateFrame(frame, url, options = {}) {
      assertNoLegacyNavigationOptions(options);
      const {
        referer = this._networkManager.extraHTTPHeaders()['referer'],
        waitUntil = ['load'],
        timeout = this._timeoutSettings.navigationTimeout(),
      } = options;
  
      const watcher = new LifecycleWatcher(this, frame, waitUntil, timeout);
      let ensureNewDocumentNavigation = false;
      let error = await Promise.race([
        navigate(this._client, url, referer, frame._id),
        watcher.timeoutOrTerminationPromise(),
      ]);
      if (!error) {
        error = await Promise.race([
          watcher.timeoutOrTerminationPromise(),
          ensureNewDocumentNavigation ? watcher.newDocumentNavigationPromise() : watcher.sameDocumentNavigationPromise(),
        ]);
      }
      watcher.dispose();
      if (error)
        throw error;
      return watcher.navigationResponse();
  
      /**
       * @param {!Puppeteer.CDPSession} client
       * @param {string} url
       * @param {string} referrer
       * @param {string} frameId
       * @return {!Promise<?Error>}
       */
      async function navigate(client, url, referrer, frameId) {
        try {
          const response = await client.send('Page.navigate', {url, referrer, frameId});
          ensureNewDocumentNavigation = !!response.loaderId;
          return response.errorText ? new Error(`${response.errorText} at ${url}`) : null;
        } catch (error) {
          return error;
        }
      }
    }
  
    /**
     * @param {!Puppeteer.Frame} frame
     * @param {!{timeout?: number, waitUntil?: string|!Array<string>}=} options
     * @return {!Promise<?Puppeteer.Response>}
     */
    async waitForFrameNavigation(frame, options = {}) {
      assertNoLegacyNavigationOptions(options);
      const {
        waitUntil = ['load'],
        timeout = this._timeoutSettings.navigationTimeout(),
      } = options;
      const watcher = new LifecycleWatcher(this, frame, waitUntil, timeout);
      const error = await Promise.race([
        watcher.timeoutOrTerminationPromise(),
        watcher.sameDocumentNavigationPromise(),
        watcher.newDocumentNavigationPromise()
      ]);
      watcher.dispose();
      if (error)
        throw error;
      return watcher.navigationResponse();
    }
  
    /**
     * @param {!Protocol.Page.lifecycleEventPayload} event
     */
    _onLifecycleEvent(event) {
      const frame = this._frames.get(event.frameId);
      if (!frame)
        return;
      frame._onLifecycleEvent(event.loaderId, event.name);
      this.emit(Events.FrameManager.LifecycleEvent, frame);
    }
  
    /**
     * @param {string} frameId
     */
    _onFrameStoppedLoading(frameId) {
      const frame = this._frames.get(frameId);
      if (!frame)
        return;
      frame._onLoadingStopped();
      this.emit(Events.FrameManager.LifecycleEvent, frame);
    }
  
    /**
     * @param {!Protocol.Page.FrameTree} frameTree
     */
    _handleFrameTree(frameTree) {
      if (frameTree.frame.parentId)
        this._onFrameAttached(frameTree.frame.id, frameTree.frame.parentId);
      this._onFrameNavigated(frameTree.frame);
      if (!frameTree.childFrames)
        return;
  
      for (const child of frameTree.childFrames)
        this._handleFrameTree(child);
    }
  
    /**
     * @return {!Puppeteer.Page}
     */
    page() {
      return this._page;
    }
  
    /**
     * @return {!Frame}
     */
    mainFrame() {
      return this._mainFrame;
    }
  
    /**
     * @return {!Array<!Frame>}
     */
    frames() {    
      /*Array.from(this._frames.values()).forEach(f => {
        console.log(
          `${
            f._id
          } - main:${f._mainWorld._hasContext()} sec:${f._secondaryWorld._hasContext()}`
        );
      });*/
  
      return Array.from(this._frames.values());
    }
  
    /**
     * @param {!string} frameId
     * @return {?Frame}
     */
    frame(frameId) {
      return this._frames.get(frameId) || null;
    }
  
    /**
     * @param {string} frameId
     * @param {?string} parentFrameId
     */
    _onFrameAttached(frameId, parentFrameId) {
      if (this._frames.has(frameId))
        return;
      assert(parentFrameId);
      const parentFrame = this._frames.get(parentFrameId);
      const frame = new Frame(this, this._client, parentFrame, frameId);
      this._frames.set(frame._id, frame);
      this.emit(Events.FrameManager.FrameAttached, frame);
    }
  
    /**
     * @param {!Protocol.Page.Frame} framePayload
     */
    _onFrameNavigated(framePayload) {
      const isMainFrame = !framePayload.parentId;
      let frame = isMainFrame ? this._mainFrame : this._frames.get(framePayload.id);
      assert(isMainFrame || frame, 'We either navigate top level or have old version of the navigated frame');
  
      // Detach all child frames first.
      if (frame) {
        for (const child of frame.childFrames())
          this._removeFramesRecursively(child);
      }
  
      // Update or create main frame.
      if (isMainFrame) {
        if (frame) {
          // Update frame id to retain frame identity on cross-process navigation.
          this._frames.delete(frame._id);
          frame._id = framePayload.id;
        } else {
          // Initial main frame navigation.
          frame = new Frame(this, this._client, null, framePayload.id);
        }
        this._frames.set(framePayload.id, frame);
        this._mainFrame = frame;
      }
  
      // Update frame payload.
      frame._navigated(framePayload);
  
      this.emit(Events.FrameManager.FrameNavigated, frame);
    }
  
    /**
     * @param {string} name
     */
    async _ensureIsolatedWorld(name) {
      if (this._isolatedWorlds.has(name))
        return;
      this._isolatedWorlds.add(name);
      await this._client.send('Page.addScriptToEvaluateOnNewDocument', {
        source: `//# sourceURL=${EVALUATION_SCRIPT_URL}`,
        worldName: name,
      }),
      await Promise.all(this.frames().map(frame => this._client.send('Page.createIsolatedWorld', {
        frameId: frame._id,
        grantUniveralAccess: true,
        worldName: name,
      }).catch(debugError))); // frames might be removed before we send this
    }
  
    async _rebuildIsolatedWorld() {
      this._isolatedWorlds.clear();
      await this._ensureIsolatedWorld(UTILITY_WORLD_NAME);    
    }
  
    /**
     * @param {string} frameId
     * @param {string} url
     */
    _onFrameNavigatedWithinDocument(frameId, url) {
      const frame = this._frames.get(frameId);
      if (!frame)
        return;
      frame._navigatedWithinDocument(url);
      this.emit(Events.FrameManager.FrameNavigatedWithinDocument, frame);
      this.emit(Events.FrameManager.FrameNavigated, frame);
    }
  
    /**
     * @param {string} frameId
     */
    _onFrameDetached(frameId) {
      const frame = this._frames.get(frameId);
      if (frame)
        this._removeFramesRecursively(frame);
    }
  
    _onExecutionContextCreated(contextPayload) {
      const frameId = contextPayload.auxData ? contextPayload.auxData.frameId : null;
      const frame = this._frames.get(frameId) || null;
      let world = null;
      if (frame) {
        if (contextPayload.auxData && !!contextPayload.auxData['isDefault']) {
          world = frame._mainWorld;
        } else if (contextPayload.name === UTILITY_WORLD_NAME && !frame._secondaryWorld._hasContext()) {
          // In case of multiple sessions to the same target, there's a race between
          // connections so we might end up creating multiple isolated worlds.
          // We can use either.
          world = frame._secondaryWorld;
        }
      }
      if (contextPayload.auxData && contextPayload.auxData['type'] === 'isolated')
        this._isolatedWorlds.add(contextPayload.name);
      /** @type {!ExecutionContext} */
      const context = new ExecutionContext(this._client, contextPayload, world);
      if (world)
        world._setContext(context);
      this._contextIdToContext.set(contextPayload.id, context);
    }
  
    /**
     * @param {number} executionContextId
     */
    _onExecutionContextDestroyed(executionContextId) {
      const context = this._contextIdToContext.get(executionContextId);
      if (!context)
        return;
      this._contextIdToContext.delete(executionContextId);
      if (context._world)
        context._world._setContext(null);
    }
  
    _onExecutionContextsCleared() {
      for (const context of this._contextIdToContext.values()) {
        if (context._world)
          context._world._setContext(null);
      }
      this._contextIdToContext.clear();
    }
  
    /**
     * @param {number} contextId
     * @return {!ExecutionContext}
     */
    executionContextById(contextId) {
      const context = this._contextIdToContext.get(contextId);
      assert(context, 'INTERNAL ERROR: missing context with id = ' + contextId);
      return context;
    }
  
    /**
     * @param {!Frame} frame
     */
    _removeFramesRecursively(frame) {
      for (const child of frame.childFrames())
        this._removeFramesRecursively(child);
      frame._detach();
      this._frames.delete(frame._id);
      this.emit(Events.FrameManager.FrameDetached, frame);
    }
  }
  
  /**
   * @unrestricted
   */
  class Frame {
    /**
     * @param {!FrameManager} frameManager
     * @param {!Puppeteer.CDPSession} client
     * @param {?Frame} parentFrame
     * @param {string} frameId
     */
    constructor(frameManager, client, parentFrame, frameId) {
      this._frameManager = frameManager;
      this._client = client;
      this._parentFrame = parentFrame;
      this._url = '';
      this._id = frameId;
      this._detached = false;
  
      this._loaderId = '';
      /** @type {!Set<string>} */
      this._lifecycleEvents = new Set();
      /** @type {!DOMWorld} */
      this._mainWorld = new DOMWorld(frameManager, this, frameManager._timeoutSettings);
      /** @type {!DOMWorld} */
      this._secondaryWorld = new DOMWorld(frameManager, this, frameManager._timeoutSettings);
  
      /** @type {!Set<!Frame>} */
      this._childFrames = new Set();
      if (this._parentFrame)
        this._parentFrame._childFrames.add(this);
    }
  
    /**
     * @param {string} url
     * @param {!{referer?: string, timeout?: number, waitUntil?: string|!Array<string>}=} options
     * @return {!Promise<?Puppeteer.Response>}
     */
    async goto(url, options) {
      return await this._frameManager.navigateFrame(this, url, options);
    }
  
    /**
     * @param {!{timeout?: number, waitUntil?: string|!Array<string>}=} options
     * @return {!Promise<?Puppeteer.Response>}
     */
    async waitForNavigation(options) {
      return await this._frameManager.waitForFrameNavigation(this, options);
    }
  
    /**
     * @return {!Promise<!ExecutionContext>}
     */
    executionContext() {
      return this._mainWorld.executionContext();
    }
  
    /**
     * @param {Function|string} pageFunction
     * @param {!Array<*>} args
     * @return {!Promise<!Puppeteer.JSHandle>}
     */
    async evaluateHandle(pageFunction, ...args) {
      return this._mainWorld.evaluateHandle(pageFunction, ...args);
    }
  
    /**
     * @param {Function|string} pageFunction
     * @param {!Array<*>} args
     * @return {!Promise<*>}
     */
    async evaluate(pageFunction, ...args) {
      return this._mainWorld.evaluate(pageFunction, ...args);
    }
  
    /**
     * @param {string} selector
     * @return {!Promise<?Puppeteer.ElementHandle>}
     */
    async $(selector) {
      return this._mainWorld.$(selector);
    }
  
    /**
     * @param {string} expression
     * @return {!Promise<!Array<!Puppeteer.ElementHandle>>}
     */
    async $x(expression) {
      return this._mainWorld.$x(expression);
    }
  
    /**
     * @param {string} selector
     * @param {Function|string} pageFunction
     * @param {!Array<*>} args
     * @return {!Promise<(!Object|undefined)>}
     */
    async $eval(selector, pageFunction, ...args) {
      return this._mainWorld.$eval(selector, pageFunction, ...args);
    }
  
    /**
     * @param {string} selector
     * @param {Function|string} pageFunction
     * @param {!Array<*>} args
     * @return {!Promise<(!Object|undefined)>}
     */
    async $$eval(selector, pageFunction, ...args) {
      return this._mainWorld.$$eval(selector, pageFunction, ...args);
    }
  
    /**
     * @param {string} selector
     * @return {!Promise<!Array<!Puppeteer.ElementHandle>>}
     */
    async $$(selector) {
      return this._mainWorld.$$(selector);
    }
  
    /**
     * @return {!Promise<String>}
     */
    async content() {
      return this._secondaryWorld.content();
    }
  
    /**
     * @param {string} html
     * @param {!{timeout?: number, waitUntil?: string|!Array<string>}=} options
     */
    async setContent(html, options = {}) {
      return this._secondaryWorld.setContent(html, options);
    }
  
    /**
     * @return {string}
     */
    name() {
      return this._name || '';
    }
  
    /**
     * @return {string}
     */
    url() {
      return this._url;
    }
  
    /**
     * @return {?Frame}
     */
    parentFrame() {
      return this._parentFrame;
    }
  
    /**
     * @return {!Array.<!Frame>}
     */
    childFrames() {
      return Array.from(this._childFrames);
    }
  
    /**
     * @return {boolean}
     */
    isDetached() {
      return this._detached;
    }
  
    /**
     * @param {!{url?: string, path?: string, content?: string, type?: string}} options
     * @return {!Promise<!Puppeteer.ElementHandle>}
     */
    async addScriptTag(options) {
      return this._mainWorld.addScriptTag(options);
    }
  
    /**
     * @param {!{url?: string, path?: string, content?: string}} options
     * @return {!Promise<!Puppeteer.ElementHandle>}
     */
    async addStyleTag(options) {
      return this._mainWorld.addStyleTag(options);
    }
  
    /**
     * @param {string} selector
     * @param {!{delay?: number, button?: "left"|"right"|"middle", clickCount?: number}=} options
     */
    async click(selector, options) {
      return this._secondaryWorld.click(selector, options);
    }
  
    /**
     * @param {string} selector
     */
    async focus(selector) {
      return this._secondaryWorld.focus(selector);
    }
  
    /**
     * @param {string} selector
     */
    async hover(selector) {
      return this._secondaryWorld.hover(selector);
    }
  
    /**
    * @param {string} selector
    * @param {!Array<string>} values
    * @return {!Promise<!Array<string>>}
    */
    select(selector, ...values){
      return this._secondaryWorld.select(selector, ...values);
    }
  
    /**
     * @param {string} selector
     */
    async tap(selector) {
      return this._secondaryWorld.tap(selector);
    }
  
    /**
     * @param {string} selector
     * @param {string} text
     * @param {{delay: (number|undefined)}=} options
     */
    async type(selector, text, options) {
      return this._mainWorld.type(selector, text, options);
    }
  
    /**
     * @param {(string|number|Function)} selectorOrFunctionOrTimeout
     * @param {!Object=} options
     * @param {!Array<*>} args
     * @return {!Promise<?Puppeteer.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 {string} selector
     * @param {!{visible?: boolean, hidden?: boolean, timeout?: number}=} options
     * @return {!Promise<?Puppeteer.ElementHandle>}
     */
    async waitForSelector(selector, options) {
      const handle = await this._secondaryWorld.waitForSelector(selector, options);
      if (!handle)
        return null;
      const mainExecutionContext = await this._mainWorld.executionContext();
      const result = await mainExecutionContext._adoptElementHandle(handle);
      await handle.dispose();
      return result;
    }
  
    /**
     * @param {string} xpath
     * @param {!{visible?: boolean, hidden?: boolean, timeout?: number}=} options
     * @return {!Promise<?Puppeteer.ElementHandle>}
     */
    async waitForXPath(xpath, options) {
      const handle = await this._secondaryWorld.waitForXPath(xpath, options);
      if (!handle)
        return null;
      const mainExecutionContext = await this._mainWorld.executionContext();
      const result = await mainExecutionContext._adoptElementHandle(handle);
      await handle.dispose();
      return result;
    }
  
    /**
     * @param {Function|string} pageFunction
     * @param {!{polling?: string|number, timeout?: number}=} options
     * @return {!Promise<!Puppeteer.JSHandle>}
     */
    waitForFunction(pageFunction, options = {}, ...args) {
      return this._mainWorld.waitForFunction(pageFunction, options, ...args);
    }
  
    /**
     * @return {!Promise<string>}
     */
    async title() {
      return this._secondaryWorld.title();
    }
  
    /**
     * @param {!Protocol.Page.Frame} framePayload
     */
    _navigated(framePayload) {
      this._name = framePayload.name;
      // TODO(lushnikov): remove this once requestInterception has loaderId exposed.
      this._navigationURL = framePayload.url;
      this._url = framePayload.url;
    }
  
    /**
     * @param {string} url
     */
    _navigatedWithinDocument(url) {
      this._url = url;
    }
  
    /**
     * @param {string} loaderId
     * @param {string} name
     */
    _onLifecycleEvent(loaderId, name) {
      if (name === 'init') {
        this._loaderId = loaderId;
        this._lifecycleEvents.clear();
      }
      this._lifecycleEvents.add(name);
    }
  
    _onLoadingStopped() {
      this._lifecycleEvents.add('DOMContentLoaded');
      this._lifecycleEvents.add('load');
    }
  
    _detach() {
      this._detached = true;
      this._mainWorld._detach();
      this._secondaryWorld._detach();
      if (this._parentFrame)
        this._parentFrame._childFrames.delete(this);
      this._parentFrame = null;
    }
  }
  
  function assertNoLegacyNavigationOptions(options) {
    assert(options['networkIdleTimeout'] === undefined, 'ERROR: networkIdleTimeout option is no longer supported.');
    assert(options['networkIdleInflight'] === undefined, 'ERROR: networkIdleInflight option is no longer supported.');
    assert(options.waitUntil !== 'networkidle', 'ERROR: "networkidle" option is no longer supported. Use "networkidle2" instead');
  }
  
  module.exports = {FrameManager, Frame};
  