How to use _adoptBackendNodeId method in Playwright Internal

Best JavaScript code snippet using playwright-internal

crPage.js

Source:crPage.js

...305      throw e;306    });307    parent = frame.parentFrame();308    if (!parent) throw new Error('Frame has been detached.');309    return parentSession._adoptBackendNodeId(backendNodeId, await parent._mainContext());310  }311}312exports.CRPage = CRPage;313class FrameSession {314  // Marks the oopif session that remote -> local transition has happened in the parent.315  // See Target.detachedFromTarget handler for details.316  constructor(crPage, client, targetId, parentSession) {317    this._client = void 0;318    this._crPage = void 0;319    this._page = void 0;320    this._networkManager = void 0;321    this._contextIdToContext = new Map();322    this._eventListeners = [];323    this._targetId = void 0;324    this._firstNonInitialNavigationCommittedPromise = void 0;325    this._firstNonInitialNavigationCommittedFulfill = () => {};326    this._firstNonInitialNavigationCommittedReject = e => {};327    this._windowId = void 0;328    this._swappedIn = false;329    this._videoRecorder = null;330    this._screencastId = null;331    this._screencastClients = new Set();332    this._client = client;333    this._crPage = crPage;334    this._page = crPage._page;335    this._targetId = targetId;336    this._networkManager = new _crNetworkManager.CRNetworkManager(client, this._page, parentSession ? parentSession._networkManager : null);337    this._firstNonInitialNavigationCommittedPromise = new Promise((f, r) => {338      this._firstNonInitialNavigationCommittedFulfill = f;339      this._firstNonInitialNavigationCommittedReject = r;340    });341    client.once(_crConnection.CRSessionEvents.Disconnected, () => {342      this._firstNonInitialNavigationCommittedReject(new Error('Page closed'));343    });344  }345  _isMainFrame() {346    return this._targetId === this._crPage._targetId;347  }348  _addRendererListeners() {349    this._eventListeners.push(...[_eventsHelper.eventsHelper.addEventListener(this._client, 'Log.entryAdded', event => this._onLogEntryAdded(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.fileChooserOpened', event => this._onFileChooserOpened(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameAttached', event => this._onFrameAttached(event.frameId, event.parentFrameId)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameDetached', event => this._onFrameDetached(event.frameId, event.reason)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameNavigated', event => this._onFrameNavigated(event.frame, false)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameRequestedNavigation', event => this._onFrameRequestedNavigation(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.frameStoppedLoading', event => this._onFrameStoppedLoading(event.frameId)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.javascriptDialogOpening', event => this._onDialog(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.navigatedWithinDocument', event => this._onFrameNavigatedWithinDocument(event.frameId, event.url)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.bindingCalled', event => this._onBindingCalled(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.consoleAPICalled', event => this._onConsoleAPI(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.exceptionThrown', exception => this._handleException(exception.exceptionDetails)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.executionContextCreated', event => this._onExecutionContextCreated(event.context)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.executionContextDestroyed', event => this._onExecutionContextDestroyed(event.executionContextId)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Runtime.executionContextsCleared', event => this._onExecutionContextsCleared()), _eventsHelper.eventsHelper.addEventListener(this._client, 'Target.attachedToTarget', event => this._onAttachedToTarget(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Target.detachedFromTarget', event => this._onDetachedFromTarget(event))]);350  }351  _addBrowserListeners() {352    this._eventListeners.push(...[_eventsHelper.eventsHelper.addEventListener(this._client, 'Inspector.targetCrashed', event => this._onTargetCrashed()), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.screencastFrame', event => this._onScreencastFrame(event)), _eventsHelper.eventsHelper.addEventListener(this._client, 'Page.windowOpen', event => this._onWindowOpen(event))]);353  }354  async _initialize(hasUIWindow) {355    if (hasUIWindow && !this._crPage._browserContext._browser.isClank() && !this._crPage._browserContext._options.noDefaultViewport) {356      const {357        windowId358      } = await this._client.send('Browser.getWindowForTarget');359      this._windowId = windowId;360    }361    let screencastOptions;362    if (this._isMainFrame() && this._crPage._browserContext._options.recordVideo && hasUIWindow) {363      const screencastId = (0, _utils.createGuid)();364      const outputFile = _path.default.join(this._crPage._browserContext._options.recordVideo.dir, screencastId + '.webm');365      screencastOptions = { // validateBrowserContextOptions ensures correct video size.366        ...this._crPage._browserContext._options.recordVideo.size,367        outputFile368      };369      await this._crPage._browserContext._ensureVideosPath(); // Note: it is important to start video recorder before sending Page.startScreencast,370      // and it is equally important to send Page.startScreencast before sending Runtime.runIfWaitingForDebugger.371      await this._createVideoRecorder(screencastId, screencastOptions);372      this._crPage.pageOrError().then(p => {373        if (p instanceof Error) this._stopVideoRecording().catch(() => {});374      });375    }376    let lifecycleEventsEnabled;377    if (!this._isMainFrame()) this._addRendererListeners();378    this._addBrowserListeners();379    const promises = [this._client.send('Page.enable'), this._client.send('Page.getFrameTree').then(({380      frameTree381    }) => {382      if (this._isMainFrame()) {383        this._handleFrameTree(frameTree);384        this._addRendererListeners();385      }386      const localFrames = this._isMainFrame() ? this._page.frames() : [this._page._frameManager.frame(this._targetId)];387      for (const frame of localFrames) {388        // Note: frames might be removed before we send these.389        this._client._sendMayFail('Page.createIsolatedWorld', {390          frameId: frame._id,391          grantUniveralAccess: true,392          worldName: UTILITY_WORLD_NAME393        });394        for (const binding of this._crPage._browserContext._pageBindings.values()) frame.evaluateExpression(binding.source, false, undefined).catch(e => {});395        for (const source of this._crPage._browserContext._evaluateOnNewDocumentSources) frame.evaluateExpression(source, false, undefined, 'main').catch(e => {});396      }397      const isInitialEmptyPage = this._isMainFrame() && this._page.mainFrame().url() === ':';398      if (isInitialEmptyPage) {399        // Ignore lifecycle events for the initial empty page. It is never the final page400        // hence we are going to get more lifecycle updates after the actual navigation has401        // started (even if the target url is about:blank).402        lifecycleEventsEnabled.catch(e => {}).then(() => {403          this._eventListeners.push(_eventsHelper.eventsHelper.addEventListener(this._client, 'Page.lifecycleEvent', event => this._onLifecycleEvent(event)));404        });405      } else {406        this._firstNonInitialNavigationCommittedFulfill();407        this._eventListeners.push(_eventsHelper.eventsHelper.addEventListener(this._client, 'Page.lifecycleEvent', event => this._onLifecycleEvent(event)));408      }409    }), this._client.send('Log.enable', {}), lifecycleEventsEnabled = this._client.send('Page.setLifecycleEventsEnabled', {410      enabled: true411    }), this._client.send('Runtime.enable', {}), this._client.send('Page.addScriptToEvaluateOnNewDocument', {412      source: '',413      worldName: UTILITY_WORLD_NAME414    }), this._networkManager.initialize(), this._client.send('Target.setAutoAttach', {415      autoAttach: true,416      waitForDebuggerOnStart: true,417      flatten: true418    })];419    if (this._isMainFrame()) promises.push(this._client.send('Emulation.setFocusEmulationEnabled', {420      enabled: true421    }));422    const options = this._crPage._browserContext._options;423    if (options.bypassCSP) promises.push(this._client.send('Page.setBypassCSP', {424      enabled: true425    }));426    if (options.ignoreHTTPSErrors) promises.push(this._client.send('Security.setIgnoreCertificateErrors', {427      ignore: true428    }));429    if (this._isMainFrame()) promises.push(this._updateViewport());430    if (options.hasTouch) promises.push(this._client.send('Emulation.setTouchEmulationEnabled', {431      enabled: true432    }));433    if (options.javaScriptEnabled === false) promises.push(this._client.send('Emulation.setScriptExecutionDisabled', {434      value: true435    }));436    if (options.userAgent || options.locale) promises.push(this._client.send('Emulation.setUserAgentOverride', {437      userAgent: options.userAgent || '',438      acceptLanguage: options.locale439    }));440    if (options.locale) promises.push(emulateLocale(this._client, options.locale));441    if (options.timezoneId) promises.push(emulateTimezone(this._client, options.timezoneId));442    if (!this._crPage._browserContext._browser.options.headful) promises.push(this._setDefaultFontFamilies(this._client));443    promises.push(this._updateGeolocation(true));444    promises.push(this._updateExtraHTTPHeaders(true));445    promises.push(this._updateRequestInterception());446    promises.push(this._updateOffline(true));447    promises.push(this._updateHttpCredentials(true));448    promises.push(this._updateEmulateMedia(true));449    for (const binding of this._crPage._page.allBindings()) promises.push(this._initBinding(binding));450    for (const source of this._crPage._browserContext._evaluateOnNewDocumentSources) promises.push(this._evaluateOnNewDocument(source, 'main'));451    for (const source of this._crPage._page._evaluateOnNewDocumentSources) promises.push(this._evaluateOnNewDocument(source, 'main'));452    if (screencastOptions) promises.push(this._startVideoRecording(screencastOptions));453    promises.push(this._client.send('Runtime.runIfWaitingForDebugger'));454    promises.push(this._firstNonInitialNavigationCommittedPromise);455    await Promise.all(promises);456  }457  dispose() {458    _eventsHelper.eventsHelper.removeEventListeners(this._eventListeners);459    this._networkManager.dispose();460    this._crPage._sessions.delete(this._targetId);461  }462  async _navigate(frame, url, referrer) {463    const response = await this._client.send('Page.navigate', {464      url,465      referrer,466      frameId: frame._id467    });468    if (response.errorText) throw new Error(`${response.errorText} at ${url}`);469    return {470      newDocumentId: response.loaderId471    };472  }473  _onLifecycleEvent(event) {474    if (this._eventBelongsToStaleFrame(event.frameId)) return;475    if (event.name === 'load') this._page._frameManager.frameLifecycleEvent(event.frameId, 'load');else if (event.name === 'DOMContentLoaded') this._page._frameManager.frameLifecycleEvent(event.frameId, 'domcontentloaded');476  }477  _onFrameStoppedLoading(frameId) {478    if (this._eventBelongsToStaleFrame(frameId)) return;479    this._page._frameManager.frameStoppedLoading(frameId);480  }481  _handleFrameTree(frameTree) {482    this._onFrameAttached(frameTree.frame.id, frameTree.frame.parentId || null);483    this._onFrameNavigated(frameTree.frame, true);484    if (!frameTree.childFrames) return;485    for (const child of frameTree.childFrames) this._handleFrameTree(child);486  }487  _eventBelongsToStaleFrame(frameId) {488    const frame = this._page._frameManager.frame(frameId); // Subtree may be already gone because some ancestor navigation destroyed the oopif.489    if (!frame) return true; // When frame goes remote, parent process may still send some events490    // related to the local frame before it sends frameDetached.491    // In this case, we already have a new session for this frame, so events492    // in the old session should be ignored.493    const session = this._crPage._sessionForFrame(frame);494    return session && session !== this && !session._swappedIn;495  }496  _onFrameAttached(frameId, parentFrameId) {497    const frameSession = this._crPage._sessions.get(frameId);498    if (frameSession && frameId !== this._targetId) {499      // This is a remote -> local frame transition.500      frameSession._swappedIn = true;501      const frame = this._page._frameManager.frame(frameId); // Frame or even a whole subtree may be already gone, because some ancestor did navigate.502      if (frame) this._page._frameManager.removeChildFramesRecursively(frame);503      return;504    }505    if (parentFrameId && !this._page._frameManager.frame(parentFrameId)) {506      // Parent frame may be gone already because some ancestor frame navigated and507      // destroyed the whole subtree of some oopif, while oopif's process is still sending us events.508      // Be careful to not confuse this with "main frame navigated cross-process" scenario509      // where parentFrameId is null.510      return;511    }512    this._page._frameManager.frameAttached(frameId, parentFrameId);513  }514  _onFrameNavigated(framePayload, initial) {515    if (this._eventBelongsToStaleFrame(framePayload.id)) return;516    this._page._frameManager.frameCommittedNewDocumentNavigation(framePayload.id, framePayload.url + (framePayload.urlFragment || ''), framePayload.name || '', framePayload.loaderId, initial);517    if (!initial) this._firstNonInitialNavigationCommittedFulfill();518  }519  _onFrameRequestedNavigation(payload) {520    if (this._eventBelongsToStaleFrame(payload.frameId)) return;521    if (payload.disposition === 'currentTab') this._page._frameManager.frameRequestedNavigation(payload.frameId);522  }523  _onFrameNavigatedWithinDocument(frameId, url) {524    if (this._eventBelongsToStaleFrame(frameId)) return;525    this._page._frameManager.frameCommittedSameDocumentNavigation(frameId, url);526  }527  _onFrameDetached(frameId, reason) {528    if (this._crPage._sessions.has(frameId)) {529      // This is a local -> remote frame transtion, where530      // Page.frameDetached arrives after Target.attachedToTarget.531      // We've already handled the new target and frame reattach - nothing to do here.532      return;533    }534    if (reason === 'swap') {535      // This is a local -> remote frame transtion, where536      // Page.frameDetached arrives before Target.attachedToTarget.537      // We should keep the frame in the tree, and it will be used for the new target.538      const frame = this._page._frameManager.frame(frameId);539      if (frame) this._page._frameManager.removeChildFramesRecursively(frame);540      return;541    } // Just a regular frame detach.542    this._page._frameManager.frameDetached(frameId);543  }544  _onExecutionContextCreated(contextPayload) {545    const frame = contextPayload.auxData ? this._page._frameManager.frame(contextPayload.auxData.frameId) : null;546    if (!frame || this._eventBelongsToStaleFrame(frame._id)) return;547    const delegate = new _crExecutionContext.CRExecutionContext(this._client, contextPayload);548    let worldName = null;549    if (contextPayload.auxData && !!contextPayload.auxData.isDefault) worldName = 'main';else if (contextPayload.name === UTILITY_WORLD_NAME) worldName = 'utility';550    const context = new dom.FrameExecutionContext(delegate, frame, worldName);551    context[contextDelegateSymbol] = delegate;552    if (worldName) frame._contextCreated(worldName, context);553    this._contextIdToContext.set(contextPayload.id, context);554  }555  _onExecutionContextDestroyed(executionContextId) {556    const context = this._contextIdToContext.get(executionContextId);557    if (!context) return;558    this._contextIdToContext.delete(executionContextId);559    context.frame._contextDestroyed(context);560  }561  _onExecutionContextsCleared() {562    for (const contextId of Array.from(this._contextIdToContext.keys())) this._onExecutionContextDestroyed(contextId);563  }564  _onAttachedToTarget(event) {565    const session = _crConnection.CRConnection.fromSession(this._client).session(event.sessionId);566    if (event.targetInfo.type === 'iframe') {567      // Frame id equals target id.568      const targetId = event.targetInfo.targetId;569      const frame = this._page._frameManager.frame(targetId);570      if (!frame) return; // Subtree may be already gone due to renderer/browser race.571      this._page._frameManager.removeChildFramesRecursively(frame);572      const frameSession = new FrameSession(this._crPage, session, targetId, this);573      this._crPage._sessions.set(targetId, frameSession);574      frameSession._initialize(false).catch(e => e);575      return;576    }577    if (event.targetInfo.type !== 'worker') {578      // Ideally, detaching should resume any target, but there is a bug in the backend.579      session._sendMayFail('Runtime.runIfWaitingForDebugger').then(() => {580        this._client._sendMayFail('Target.detachFromTarget', {581          sessionId: event.sessionId582        });583      });584      return;585    }586    const url = event.targetInfo.url;587    const worker = new _page.Worker(this._page, url);588    this._page._addWorker(event.sessionId, worker);589    session.once('Runtime.executionContextCreated', async event => {590      worker._createExecutionContext(new _crExecutionContext.CRExecutionContext(session, event.context));591    }); // This might fail if the target is closed before we initialize.592    session._sendMayFail('Runtime.enable');593    session._sendMayFail('Network.enable');594    session._sendMayFail('Runtime.runIfWaitingForDebugger');595    session.on('Runtime.consoleAPICalled', event => {596      const args = event.args.map(o => worker._existingExecutionContext.createHandle(o));597      this._page._addConsoleMessage(event.type, args, (0, _crProtocolHelper.toConsoleMessageLocation)(event.stackTrace));598    });599    session.on('Runtime.exceptionThrown', exception => this._page.emit(_page.Page.Events.PageError, (0, _crProtocolHelper.exceptionToError)(exception.exceptionDetails))); // TODO: attribute workers to the right frame.600    this._networkManager.instrumentNetworkEvents(session, this._page._frameManager.frame(this._targetId));601  }602  _onDetachedFromTarget(event) {603    // This might be a worker...604    this._page._removeWorker(event.sessionId); // ... or an oopif.605    const childFrameSession = this._crPage._sessions.get(event.targetId);606    if (!childFrameSession) return; // Usually, we get frameAttached in this session first and mark child as swappedIn.607    if (childFrameSession._swappedIn) {608      childFrameSession.dispose();609      return;610    } // However, sometimes we get detachedFromTarget before frameAttached.611    // In this case we don't know wheter this is a remote frame detach,612    // or just a remote -> local transition. In the latter case, frameAttached613    // is already inflight, so let's make a safe roundtrip to ensure it arrives.614    this._client.send('Page.enable').catch(e => null).then(() => {615      // Child was not swapped in - that means frameAttached did not happen and616      // this is remote detach rather than remote -> local swap.617      if (!childFrameSession._swappedIn) this._page._frameManager.frameDetached(event.targetId);618      childFrameSession.dispose();619    });620  }621  _onWindowOpen(event) {622    this._crPage._nextWindowOpenPopupFeatures.push(event.windowFeatures);623  }624  async _onConsoleAPI(event) {625    if (event.executionContextId === 0) {626      // DevTools protocol stores the last 1000 console messages. These627      // messages are always reported even for removed execution contexts. In628      // this case, they are marked with executionContextId = 0 and are629      // reported upon enabling Runtime agent.630      //631      // Ignore these messages since:632      // - there's no execution context we can use to operate with message633      //   arguments634      // - these messages are reported before Playwright clients can subscribe635      //   to the 'console'636      //   page event.637      //638      // @see https://github.com/GoogleChrome/puppeteer/issues/3865639      return;640    }641    const context = this._contextIdToContext.get(event.executionContextId);642    if (!context) return;643    const values = event.args.map(arg => context.createHandle(arg));644    this._page._addConsoleMessage(event.type, values, (0, _crProtocolHelper.toConsoleMessageLocation)(event.stackTrace));645  }646  async _initBinding(binding) {647    await Promise.all([this._client.send('Runtime.addBinding', {648      name: binding.name649    }), this._client.send('Page.addScriptToEvaluateOnNewDocument', {650      source: binding.source651    })]);652  }653  async _onBindingCalled(event) {654    const pageOrError = await this._crPage.pageOrError();655    if (!(pageOrError instanceof Error)) {656      const context = this._contextIdToContext.get(event.executionContextId);657      if (context) await this._page._onBindingCalled(event.payload, context);658    }659  }660  _onDialog(event) {661    if (!this._page._frameManager.frame(this._targetId)) return; // Our frame/subtree may be gone already.662    this._page.emit(_page.Page.Events.Dialog, new dialog.Dialog(this._page, event.type, event.message, async (accept, promptText) => {663      await this._client.send('Page.handleJavaScriptDialog', {664        accept,665        promptText666      });667    }, event.defaultPrompt));668  }669  _handleException(exceptionDetails) {670    this._page.firePageError((0, _crProtocolHelper.exceptionToError)(exceptionDetails));671  }672  async _onTargetCrashed() {673    this._client._markAsCrashed();674    this._page._didCrash();675  }676  _onLogEntryAdded(event) {677    const {678      level,679      text,680      args,681      source,682      url,683      lineNumber684    } = event.entry;685    if (args) args.map(arg => (0, _crProtocolHelper.releaseObject)(this._client, arg.objectId));686    if (source !== 'worker') {687      const location = {688        url: url || '',689        lineNumber: lineNumber || 0,690        columnNumber: 0691      };692      this._page._addConsoleMessage(level, [], location, text);693    }694  }695  async _onFileChooserOpened(event) {696    const frame = this._page._frameManager.frame(event.frameId);697    if (!frame) return;698    let handle;699    try {700      const utilityContext = await frame._utilityContext();701      handle = await this._adoptBackendNodeId(event.backendNodeId, utilityContext);702    } catch (e) {703      // During async processing, frame/context may go away. We should not throw.704      return;705    }706    await this._page._onFileChooserOpened(handle);707  }708  _willBeginDownload() {709    const originPage = this._crPage._initializedPage;710    if (!originPage) {711      // Resume the page creation with an error. The page will automatically close right712      // after the download begins.713      this._firstNonInitialNavigationCommittedReject(new Error('Starting new page download'));714    }715  }716  _onScreencastFrame(payload) {717    this._page.throttleScreencastFrameAck(() => {718      this._client.send('Page.screencastFrameAck', {719        sessionId: payload.sessionId720      }).catch(() => {});721    });722    const buffer = Buffer.from(payload.data, 'base64');723    this._page.emit(_page.Page.Events.ScreencastFrame, {724      buffer,725      timestamp: payload.metadata.timestamp,726      width: payload.metadata.deviceWidth,727      height: payload.metadata.deviceHeight728    });729  }730  async _createVideoRecorder(screencastId, options) {731    (0, _utils.assert)(!this._screencastId);732    const ffmpegPath = _registry.registry.findExecutable('ffmpeg').executablePathOrDie(this._page._browserContext._browser.options.sdkLanguage);733    this._videoRecorder = await _videoRecorder.VideoRecorder.launch(this._crPage._page, ffmpegPath, options);734    this._screencastId = screencastId;735  }736  async _startVideoRecording(options) {737    const screencastId = this._screencastId;738    (0, _utils.assert)(screencastId);739    this._page.once(_page.Page.Events.Close, () => this._stopVideoRecording().catch(() => {}));740    const gotFirstFrame = new Promise(f => this._client.once('Page.screencastFrame', f));741    await this._startScreencast(this._videoRecorder, {742      format: 'jpeg',743      quality: 90,744      maxWidth: options.width,745      maxHeight: options.height746    }); // Wait for the first frame before reporting video to the client.747    gotFirstFrame.then(() => {748      this._crPage._browserContext._browser._videoStarted(this._crPage._browserContext, screencastId, options.outputFile, this._crPage.pageOrError());749    });750  }751  async _stopVideoRecording() {752    if (!this._screencastId) return;753    const screencastId = this._screencastId;754    this._screencastId = null;755    const recorder = this._videoRecorder;756    this._videoRecorder = null;757    await this._stopScreencast(recorder);758    await recorder.stop().catch(() => {}); // Keep the video artifact in the map utntil encoding is fully finished, if the context759    // starts closing before the video is fully written to disk it will wait for it.760    const video = this._crPage._browserContext._browser._takeVideo(screencastId);761    video === null || video === void 0 ? void 0 : video.reportFinished();762  }763  async _startScreencast(client, options = {}) {764    this._screencastClients.add(client);765    if (this._screencastClients.size === 1) await this._client.send('Page.startScreencast', options);766  }767  async _stopScreencast(client) {768    this._screencastClients.delete(client);769    if (!this._screencastClients.size) await this._client._sendMayFail('Page.stopScreencast');770  }771  async _updateExtraHTTPHeaders(initial) {772    const headers = network.mergeHeaders([this._crPage._browserContext._options.extraHTTPHeaders, this._page._state.extraHTTPHeaders]);773    if (!initial || headers.length) await this._client.send('Network.setExtraHTTPHeaders', {774      headers: (0, _utils.headersArrayToObject)(headers, false775      /* lowerCase */776      )777    });778  }779  async _updateGeolocation(initial) {780    const geolocation = this._crPage._browserContext._options.geolocation;781    if (!initial || geolocation) await this._client.send('Emulation.setGeolocationOverride', geolocation || {});782  }783  async _updateOffline(initial) {784    const offline = !!this._crPage._browserContext._options.offline;785    if (!initial || offline) await this._networkManager.setOffline(offline);786  }787  async _updateHttpCredentials(initial) {788    const credentials = this._crPage._browserContext._options.httpCredentials || null;789    if (!initial || credentials) await this._networkManager.authenticate(credentials);790  }791  async _updateViewport() {792    if (this._crPage._browserContext._browser.isClank()) return;793    (0, _utils.assert)(this._isMainFrame());794    const options = this._crPage._browserContext._options;795    const emulatedSize = this._page._state.emulatedSize;796    if (emulatedSize === null) return;797    const viewportSize = emulatedSize.viewport;798    const screenSize = emulatedSize.screen;799    const isLandscape = viewportSize.width > viewportSize.height;800    const promises = [this._client.send('Emulation.setDeviceMetricsOverride', {801      mobile: !!options.isMobile,802      width: viewportSize.width,803      height: viewportSize.height,804      screenWidth: screenSize.width,805      screenHeight: screenSize.height,806      deviceScaleFactor: options.deviceScaleFactor || 1,807      screenOrientation: isLandscape ? {808        angle: 90,809        type: 'landscapePrimary'810      } : {811        angle: 0,812        type: 'portraitPrimary'813      }814    })];815    if (this._windowId) {816      let insets = {817        width: 0,818        height: 0819      };820      if (this._crPage._browserContext._browser.options.headful) {821        // TODO: popup windows have their own insets.822        insets = {823          width: 24,824          height: 88825        };826        if (process.platform === 'win32') insets = {827          width: 16,828          height: 88829        };else if (process.platform === 'linux') insets = {830          width: 8,831          height: 85832        };else if (process.platform === 'darwin') insets = {833          width: 2,834          height: 80835        };836        if (this._crPage._browserContext.isPersistentContext()) {837          // FIXME: Chrome bug: OOPIF router is confused when hit target is838          // outside browser window.839          // Account for the infobar here to work around the bug.840          insets.height += 46;841        }842      }843      promises.push(this.setWindowBounds({844        width: viewportSize.width + insets.width,845        height: viewportSize.height + insets.height846      }));847    }848    await Promise.all(promises);849  }850  async windowBounds() {851    const {852      bounds853    } = await this._client.send('Browser.getWindowBounds', {854      windowId: this._windowId855    });856    return bounds;857  }858  async setWindowBounds(bounds) {859    return await this._client.send('Browser.setWindowBounds', {860      windowId: this._windowId,861      bounds862    });863  }864  async _updateEmulateMedia(initial) {865    const colorScheme = this._page._state.colorScheme === null ? '' : this._page._state.colorScheme;866    const reducedMotion = this._page._state.reducedMotion === null ? '' : this._page._state.reducedMotion;867    const forcedColors = this._page._state.forcedColors === null ? '' : this._page._state.forcedColors;868    const features = [{869      name: 'prefers-color-scheme',870      value: colorScheme871    }, {872      name: 'prefers-reduced-motion',873      value: reducedMotion874    }, {875      name: 'forced-colors',876      value: forcedColors877    }]; // Empty string disables the override.878    await this._client.send('Emulation.setEmulatedMedia', {879      media: this._page._state.mediaType || '',880      features881    });882  }883  async _setDefaultFontFamilies(session) {884    const fontFamilies = _defaultFontFamilies.platformToFontFamilies[this._crPage._browserContext._browser._platform()];885    await session.send('Page.setFontFamilies', fontFamilies);886  }887  async _updateRequestInterception() {888    await this._networkManager.setRequestInterception(this._page._needsRequestInterception());889  }890  async _setFileChooserIntercepted(enabled) {891    await this._client.send('Page.setInterceptFileChooserDialog', {892      enabled893    }).catch(e => {}); // target can be closed.894  }895  async _evaluateOnNewDocument(source, world) {896    const worldName = world === 'utility' ? UTILITY_WORLD_NAME : undefined;897    await this._client.send('Page.addScriptToEvaluateOnNewDocument', {898      source,899      worldName900    });901  }902  async _getContentFrame(handle) {903    const nodeInfo = await this._client.send('DOM.describeNode', {904      objectId: handle._objectId905    });906    if (!nodeInfo || typeof nodeInfo.node.frameId !== 'string') return null;907    return this._page._frameManager.frame(nodeInfo.node.frameId);908  }909  async _getOwnerFrame(handle) {910    // document.documentElement has frameId of the owner frame.911    const documentElement = await handle.evaluateHandle(node => {912      const doc = node;913      if (doc.documentElement && doc.documentElement.ownerDocument === doc) return doc.documentElement;914      return node.ownerDocument ? node.ownerDocument.documentElement : null;915    });916    if (!documentElement) return null;917    if (!documentElement._objectId) return null;918    const nodeInfo = await this._client.send('DOM.describeNode', {919      objectId: documentElement._objectId920    });921    const frameId = nodeInfo && typeof nodeInfo.node.frameId === 'string' ? nodeInfo.node.frameId : null;922    documentElement.dispose();923    return frameId;924  }925  async _getBoundingBox(handle) {926    const result = await this._client._sendMayFail('DOM.getBoxModel', {927      objectId: handle._objectId928    });929    if (!result) return null;930    const quad = result.model.border;931    const x = Math.min(quad[0], quad[2], quad[4], quad[6]);932    const y = Math.min(quad[1], quad[3], quad[5], quad[7]);933    const width = Math.max(quad[0], quad[2], quad[4], quad[6]) - x;934    const height = Math.max(quad[1], quad[3], quad[5], quad[7]) - y;935    const position = await this._framePosition();936    if (!position) return null;937    return {938      x: x + position.x,939      y: y + position.y,940      width,941      height942    };943  }944  async _framePosition() {945    const frame = this._page._frameManager.frame(this._targetId);946    if (!frame) return null;947    if (frame === this._page.mainFrame()) return {948      x: 0,949      y: 0950    };951    const element = await frame.frameElement();952    const box = await element.boundingBox();953    return box;954  }955  async _scrollRectIntoViewIfNeeded(handle, rect) {956    return await this._client.send('DOM.scrollIntoViewIfNeeded', {957      objectId: handle._objectId,958      rect959    }).then(() => 'done').catch(e => {960      if (e instanceof Error && e.message.includes('Node does not have a layout object')) return 'error:notvisible';961      if (e instanceof Error && e.message.includes('Node is detached from document')) return 'error:notconnected';962      throw e;963    });964  }965  async _getContentQuads(handle) {966    const result = await this._client._sendMayFail('DOM.getContentQuads', {967      objectId: handle._objectId968    });969    if (!result) return null;970    const position = await this._framePosition();971    if (!position) return null;972    return result.quads.map(quad => [{973      x: quad[0] + position.x,974      y: quad[1] + position.y975    }, {976      x: quad[2] + position.x,977      y: quad[3] + position.y978    }, {979      x: quad[4] + position.x,980      y: quad[5] + position.y981    }, {982      x: quad[6] + position.x,983      y: quad[7] + position.y984    }]);985  }986  async _adoptElementHandle(handle, to) {987    const nodeInfo = await this._client.send('DOM.describeNode', {988      objectId: handle._objectId989    });990    return this._adoptBackendNodeId(nodeInfo.node.backendNodeId, to);991  }992  async _adoptBackendNodeId(backendNodeId, to) {993    const result = await this._client._sendMayFail('DOM.resolveNode', {994      backendNodeId,995      executionContextId: to[contextDelegateSymbol]._contextId996    });997    if (!result || result.object.subtype === 'null') throw new Error(dom.kUnableToAdoptErrorMessage);998    return to.createHandle(result.object).asElement();999  }1000}1001async function emulateLocale(session, locale) {1002  try {1003    await session.send('Emulation.setLocaleOverride', {1004      locale1005    });1006  } catch (exception) {...

ExecutionContext.js

Source:ExecutionContext.js

...139            prototypeObjectId: prototypeHandle._remoteObject.objectId140        });141        return JSHandle_1.createJSHandle(this, response.objects);142    }143    async _adoptBackendNodeId(backendNodeId) {144        const { object } = await this._client.send('DOM.resolveNode', {145            backendNodeId: backendNodeId,146            executionContextId: this._contextId,147        });148        return JSHandle_1.createJSHandle(this, object);149    }150    async _adoptElementHandle(elementHandle) {151        helper_1.assert(elementHandle.executionContext() !== this, 'Cannot adopt handle that already belongs to this execution context');152        helper_1.assert(this._world, 'Cannot adopt handle without DOMWorld');153        const nodeInfo = await this._client.send('DOM.describeNode', {154            objectId: elementHandle._remoteObject.objectId,155        });156        return this._adoptBackendNodeId(nodeInfo.node.backendNodeId);157    }158}...

AriaQueryHandler.js

Source:AriaQueryHandler.js

...44    const res = await queryAXTree(exeCtx._client, element, name, role);45    if (res.length < 1) {46        return null;47    }48    return exeCtx._adoptBackendNodeId(res[0].backendDOMNodeId);49};50const waitFor = async (domWorld, selector, options) => {51    const binding = {52        name: 'ariaQuerySelector',53        pptrFunction: async (selector) => {54            const document = await domWorld._document();55            const element = await queryOne(document, selector);56            return element;57        },58    };59    return domWorld.waitForSelectorInPage((_, selector) => globalThis.ariaQuerySelector(selector), selector, options, binding);60};61const queryAll = async (element, selector) => {62    const exeCtx = element.executionContext();63    const { name, role } = parseAriaSelector(selector);64    const res = await queryAXTree(exeCtx._client, element, name, role);65    return Promise.all(res.map((axNode) => exeCtx._adoptBackendNodeId(axNode.backendDOMNodeId)));66};67const queryAllArray = async (element, selector) => {68    const elementHandles = await queryAll(element, selector);69    const exeCtx = element.executionContext();70    const jsHandle = exeCtx.evaluateHandle((...elements) => elements, ...elementHandles);71    return jsHandle;72};73/**74 * @internal75 */76export const ariaHandler = {77    queryOne,78    waitFor,79    queryAll,...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  const element = await page.$('text=Get started');7  const backendNodeId = await page._client.send('DOM.describeNode', {objectId: element._remoteObject.objectId}).then(response => response.node.backendNodeId);8  const adoptedElement = await page._adoptBackendNodeId(backendNodeId);9  console.log(await adoptedElement.evaluate(element => element.textContent));10  await browser.close();11})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext();5  const page = await context.newPage();6  const handle = await page.$('input[name="q"]');7  const backendNodeId = await handle.evaluate((el) => el._backendNodeId);8  console.log(backendNodeId);9  await browser.close();10})();

Using AI Code Generation

1const playwright = require('playwright');2(async () => {3  const browser = await playwright.chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  const frame = page.mainFrame();7  const elHandle = await frame.$('#tsf');8  const adopt = await frame._adoptBackendNodeId(await elHandle._mainFrame._client.send('DOM.resolveNode', { nodeId: await elHandle._mainFrame._client.send('DOM.describeNode', { objectId: (await elHandle._remoteObject()).objectId }).then(result => result.nodeId) }).then(result => result.backendNodeId));9  const elHandle2 = await frame._adoptedBackendNodeIdToElementHandle.get(adopt.backendNodeId);10  console.log(await elHandle2.evaluate(element => element.id));11  await browser.close();12})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const handle = await page.$('.navbar__inner a');6  const backendNodeId = await handle._client.send('DOM.describeNode', {7  });8  console.log(backendNodeId);9  await browser.close();10})();11const { chromium } = require('playwright');12(async () => {13  const browser = await chromium.launch();14  const page = await browser.newPage();15  const handle = await page.$('.navbar__inner a');16  const backendNodeId = await handle._client.send('DOM.describeNode', {17  });18  const newHandle = await page._client.send('DOM.adoptBackendNodeId', {19  });20  console.log(newHandle);21  await browser.close();22})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  const elementHandle = await page.$('body');7  const backendNodeId = await elementHandle._client.send('DOM.describeNode', {8  }).then(response => response.node.backendNodeId);9  const newElementHandle = await page._client.send('DOM.adoptBackendNodeId', {10  }).then(response => page._delegate._createHandle(response.nodeId));11  await newElementHandle.evaluate(element => element.style.backgroundColor = 'red');12  await page.screenshot({ path: 'screenshot.png' });13  await browser.close();14})();15const { chromium } = require('playwright');16(async () => {17  const browser = await chromium.launch();18  const context = await browser.newContext();19  const page = await context.newPage();20  const elementHandle = await page.$('body');21  const backendNodeId = await elementHandle._client.send('DOM.describeNode', {22  }).then(response => response.node.backendNodeId);23  const newElementHandle = await page._client.send('DOM.adoptBackendNodeId', {24  }).then(response => page._delegate._createHandle(response.nodeId));25  await newElementHandle.evaluate(element => element.style.backgroundColor = 'red');26  await page.screenshot({ path: 'screenshot.png' });27  await browser.close();28})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const element = await page.$('input[type="text"]');6  const backendNodeId = await element._client.send('DOM.describeNode', { objectId: element._remoteObject.objectId }).then((res) => res.node.backendNodeId);7  const { nodeId } = await page._client.send('DOM.adoptBackendNodeId', { backendNodeId });8  const adoptedElement = await page._client.send('DOM.resolveNode', { nodeId, backendNodeId });9  console.log(adoptedElement);10})();11{12  object: {13    objectId: '{"injectedScriptId":1,"id":5}'14  }15}

Using AI Code Generation

1const playwright = require('playwright');2const { chromium } = playwright;3(async () => {4  const browser = await chromium.launch({ headless: false });5  const page = await browser.newPage();6  await page.click('input[name="q"]');7  await page.type('input[name="q"]', 'Playwright');8  await page.keyboard.press('Enter');9  await page.waitForSelector('text=Playwright');10  const element = await page.$('text=Playwright');11  const backendNodeId = await page.evaluateHandle(element => element._backendNodeId, element);12  const internal = page._delegate;13  internal._adoptBackendNodeId({ backendNodeId: backendNodeId._remoteObject.value });14  await page.waitForTimeout(5000);15  await browser.close();16})();

Using AI Code Generation

1const playwright = require('playwright');2const { adoptBackendNodeId } = require('playwright/lib/server/dom.js');3(async () => {4  const browser = await playwright.chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  const node = await page.evaluateHandle(() => document.body);8  const backendNodeId = await node.evaluate(node => node._backendNodeId);9  const element = await adoptBackendNodeId(page, backendNodeId);10  await element.click();11  await browser.close();12})();

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch({headless:false});4  const context = await browser.newContext();5  const page = await context.newPage();6  const element = await page.$('input[name="q"]');7  const backendNodeId = await page.evaluate(element => {8    return window._playwrightInternals.adoptBackendNodeId(element);9  }, element);10  console.log(backendNodeId);11  await browser.close();12})();13const { chromium } = require('playwright');14(async () => {15  const browser = await chromium.launch({headless:false});16  const context = await browser.newContext();17  const page = await context.newPage();18  const element = await page.$('input[name="q"]');19  const backendNodeId = await page.evaluate(element => {20    return window._playwrightInternals.adoptBackendNodeId(element);21  }, element);22  console.log(backendNodeId);23  await browser.close();24})();25const { chromium } = require('playwright');26(async () => {27  const browser = await chromium.launch({headless:false});28  const context = await browser.newContext();29  const page = await context.newPage();30  const element = await page.$('input[name="q"]');31  const backendNodeId = await page.evaluate(element => {32    return window._playwrightInternals.adoptBackendNodeId(element);33  }, element);34  console.log(backendNodeId);35  await browser.close();36})();

Using AI Code Generation

1const { chromium } = require("playwright");2const { adoptBackendNodeId } = require("playwright/lib/server/chromium/crPage");3(async () => {4  const browser = await chromium.launch({ headless: false });5  const context = await browser.newContext();6  const page = await context.newPage();7  await page.click("text=Sign in");8  await page.click("text=Sign in");9  const signInButton = await page.$("text=Sign in");10  const signInButtonBackendNodeId = await (await signInButton)._getBackendNodeId();11  await page.evaluate((signInButtonBackendNodeId) => {12    const element = window._adoptBackendNodeId(signInButtonBackendNodeId);13    element.click();14  }, signInButtonBackendNodeId);15})();

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.