How to use fromProtocolColorScheme method in Playwright Internal

Best JavaScript code snippet using playwright-internal

TargetRegistry.js

Source:TargetRegistry.js

...371  setEmulatedMedia(mediumOverride) {372    this._linkedBrowser.browsingContext.mediumOverride = mediumOverride || '';373  }374  setColorScheme(colorScheme) {375    this.colorScheme = fromProtocolColorScheme(colorScheme);376    this.updateColorSchemeOverride();377  }378  updateColorSchemeOverride() {379    this._linkedBrowser.browsingContext.prefersColorSchemeOverride = this.colorScheme || this._browserContext.colorScheme || 'none';380  }381  async setViewportSize(viewportSize) {382    this._viewportSize = viewportSize;383    await this.updateViewportSize();384  }385  close(runBeforeUnload = false) {386    this._gBrowser.removeTab(this._tab, {387      skipPermitUnload: !runBeforeUnload,388    });389  }390  channel() {391    return this._channel;392  }393  id() {394    return this._targetId;395  }396  info() {397    return {398      targetId: this.id(),399      type: 'page',400      browserContextId: this._browserContext.browserContextId,401      openerId: this._openerId,402    };403  }404  _onNavigated(aLocation) {405    this._url = aLocation.spec;406    this._browserContext.grantPermissionsToOrigin(this._url);407  }408  async ensurePermissions() {409    await this._channel.connect('').send('ensurePermissions', {}).catch(e => void e);410  }411  async addScriptToEvaluateOnNewDocument(script) {412    await this._channel.connect('').send('addScriptToEvaluateOnNewDocument', script).catch(e => void e);413  }414  async addBinding(name, script) {415    await this._channel.connect('').send('addBinding', { name, script }).catch(e => void e);416  }417  async applyContextSetting(name, value) {418    await this._channel.connect('').send('applyContextSetting', { name, value }).catch(e => void e);419  }420  async hasFailedToOverrideTimezone() {421    return await this._channel.connect('').send('hasFailedToOverrideTimezone').catch(e => true);422  }423  async _startVideoRecording({width, height, scale, dir}) {424    // On Mac the window may not yet be visible when TargetCreated and its425    // NSWindow.windowNumber may be -1, so we wait until the window is known426    // to be initialized and visible.427    await this.windowReady();428    const file = OS.Path.join(dir, helper.generateId() + '.webm');429    if (width < 10 || width > 10000 || height < 10 || height > 10000)430      throw new Error("Invalid size");431    if (scale && (scale <= 0 || scale > 1))432      throw new Error("Unsupported scale");433    const screencast = Cc['@mozilla.org/juggler/screencast;1'].getService(Ci.nsIScreencastService);434    const docShell = this._gBrowser.ownerGlobal.docShell;435    // Exclude address bar and navigation control from the video.436    const rect = this.linkedBrowser().getBoundingClientRect();437    const devicePixelRatio = this._window.devicePixelRatio;438    const videoSessionId = screencast.startVideoRecording(docShell, file, width, height, scale || 0, devicePixelRatio * rect.top);439    this._screencastInfo = { videoSessionId, file };440    this.emit(PageTarget.Events.ScreencastStarted);441  }442  async _stopVideoRecording() {443    if (!this._screencastInfo)444      throw new Error('No video recording in progress');445    const screencastInfo = this._screencastInfo;446    this._screencastInfo = undefined;447    const screencast = Cc['@mozilla.org/juggler/screencast;1'].getService(Ci.nsIScreencastService);448    const result = new Promise(resolve =>449      Services.obs.addObserver(function onStopped(subject, topic, data) {450        if (screencastInfo.videoSessionId != data)451          return;452        Services.obs.removeObserver(onStopped, 'juggler-screencast-stopped');453        resolve();454      }, 'juggler-screencast-stopped')455    );456    screencast.stopVideoRecording(screencastInfo.videoSessionId);457    return result;458  }459  screencastInfo() {460    return this._screencastInfo;461  }462  dispose() {463    this._disposed = true;464    if (this._screencastInfo)465      this._stopVideoRecording().catch(e => dump(`stopVideoRecording failed:\n${e}\n`));466    this._browserContext.pages.delete(this);467    this._registry._browserToTarget.delete(this._linkedBrowser);468    this._registry._browserBrowsingContextToTarget.delete(this._linkedBrowser.browsingContext);469    try {470      helper.removeListeners(this._eventListeners);471    } catch (e) {472      // In some cases, removing listeners from this._linkedBrowser fails473      // because it is already half-destroyed.474      if (e)475        dump(e.message + '\n' + e.stack + '\n');476    }477    this._registry.emit(TargetRegistry.Events.TargetDestroyed, this);478  }479}480PageTarget.Events = {481  ScreencastStarted: Symbol('PageTarget.ScreencastStarted'),482  Crashed: Symbol('PageTarget.Crashed'),483  DialogOpened: Symbol('PageTarget.DialogOpened'),484  DialogClosed: Symbol('PageTarget.DialogClosed'),485};486function fromProtocolColorScheme(colorScheme) {487  if (colorScheme === 'light' || colorScheme === 'dark')488    return colorScheme;489  if (colorScheme === null || colorScheme === 'no-preference')490    return undefined;491  throw new Error('Unknown color scheme: ' + colorScheme);492}493class BrowserContext {494  constructor(registry, browserContextId, removeOnDetach) {495    this._registry = registry;496    this.browserContextId = browserContextId;497    // Default context has userContextId === 0, but we pass undefined to many APIs just in case.498    this.userContextId = 0;499    if (browserContextId !== undefined) {500      const identity = ContextualIdentityService.create(IDENTITY_NAME + browserContextId);501      this.userContextId = identity.userContextId;502    }503    this._principals = [];504    // Maps origins to the permission lists.505    this._permissions = new Map();506    this._registry._browserContextIdToBrowserContext.set(this.browserContextId, this);507    this._registry._userContextIdToBrowserContext.set(this.userContextId, this);508    this._proxy = null;509    this.removeOnDetach = removeOnDetach;510    this.extraHTTPHeaders = undefined;511    this.httpCredentials = undefined;512    this.requestInterceptionEnabled = undefined;513    this.ignoreHTTPSErrors = undefined;514    this.downloadOptions = undefined;515    this.defaultViewportSize = undefined;516    this.deviceScaleFactor = undefined;517    this.defaultUserAgent = null;518    this.touchOverride = false;519    this.colorScheme = 'none';520    this.screencastOptions = undefined;521    this.scriptsToEvaluateOnNewDocument = [];522    this.bindings = [];523    this.settings = {};524    this.pages = new Set();525  }526  setColorScheme(colorScheme) {527    this.colorScheme = fromProtocolColorScheme(colorScheme);528    for (const page of this.pages)529      page.updateColorSchemeOverride();530  }531  async destroy() {532    if (this.userContextId !== 0) {533      ContextualIdentityService.remove(this.userContextId);534      for (const page of this.pages)535        page.close();536      if (this.pages.size) {537        await new Promise(f => {538          const listener = helper.on(this._registry, TargetRegistry.Events.TargetDestroyed, () => {539            if (!this.pages.size) {540              helper.removeListeners([listener]);541              f();...

Using AI Code Generation

1const { webkit } = require('playwright');2(async () => {3  const browser = await webkit.launch();4  const context = await browser.newContext({5  });6  const page = await context.newPage();7  await page.screenshot({ path: `example.png` });8  await browser.close();9})();10const { webkit } = require('playwright');11(async () => {12  const browser = await webkit.launch();13  const context = await browser.newContext({14  });15  const page = await context.newPage();16  await page.screenshot({ path: `example.png` });17  await browser.close();18})();19const puppeteer = require('puppeteer');20(async () => {21  const browser = await puppeteer.launch();22  const page = await browser.newPage();23  await page.emulateMediaFeatures([24    { name: 'prefers-color-scheme', value: 'dark' },25  ]);26  await page.screenshot({ path: `example.png` });27  await browser.close();28})();29const puppeteer = require('puppeteer');30(async () => {31  const browser = await puppeteer.launch();32  const page = await browser.newPage();33  await page.emulateMediaFeatures([34    { name: 'prefers-color-scheme', value: 'dark' },35  ]);36  await page.screenshot({ path: `example.png` });37  await browser.close();38})();39Cypress.Commands.add('fromProtocolColorScheme', (colorScheme) => {40  cy.get('html').invoke('attr', 'data-color-mode', colorScheme);41});42describe('Test', () => {43  it('should work', () => {44    cy.fromProtocolColorScheme('dark');

Using AI Code Generation

1const { webkit } = require('playwright');2(async () => {3  const browser = await webkit.launch();4  const context = await browser.newContext({ viewport: null });5  const page = await context.newPage();6  await page.screenshot({ path: 'google.png' });7  await browser.close();8})();9const { webkit } = require('playwright');10(async () => {11  const browser = await webkit.launch();12  const context = await browser.newContext({ viewport: null });13  const page = await context.newPage();14  await page.screenshot({ path: 'google.png' });15  await browser.close();16})();17const { webkit } = require('playwright');18(async () => {19  const browser = await webkit.launch();20  const context = await browser.newContext({ viewport: null });21  const page = await context.newPage();22  await page.screenshot({ path: 'google.png' });23  await browser.close();24})();25const { webkit } = require('playwright');26(async () => {27  const browser = await webkit.launch();28  const context = await browser.newContext({ viewport: null });29  const page = await context.newPage();30  await page.screenshot({ path: 'google.png' });31  await browser.close();32})();33const { webkit } = require('playwright');34(async () => {35  const browser = await webkit.launch();36  const context = await browser.newContext({ viewport: null });37  const page = await context.newPage();38  await page.screenshot({ path: 'google.png' });39  await browser.close();40})();41const { webkit } = require('playwright');42(async () => {43  const browser = await webkit.launch();44  const context = await browser.newContext({ viewport: null });

Using AI Code Generation

1const {chromium, webkit, firefox} = require('playwright');2(async () => {3  const browser = await chromium.launch({ headless: false });4  const context = await browser.newContext({5  });6  const page = await context.newPage();7  await page.screenshot({ path: `chromium-dark.png` });8  await browser.close();9})();10const {chromium, webkit, firefox} = require('playwright');11(async () => {12  const browser = await webkit.launch({ headless: false });13  const context = await browser.newContext({14  });15  const page = await context.newPage();16  await page.screenshot({ path: `webkit-dark.png` });17  await browser.close();18})();19const {chromium, webkit, firefox} = require('playwright');20(async () => {21  const browser = await firefox.launch({ headless: false });22  const context = await browser.newContext({23  });24  const page = await context.newPage();25  await page.screenshot({ path: `firefox-dark.png` });26  await browser.close();27})();28const {chromium, webkit, firefox} = require('playwright');29(async () => {30  const browser = await chromium.launch({ headless: false });31  const context = await browser.newContext({32  });33  const page = await context.newPage();34  await page.screenshot({ path: `chromium-light.png` });35  await browser.close();36})();37const {chromium, webkit, firefox} = require('playwright');38(async () => {

Using AI Code Generation

1const { webkit } = require('playwright');2(async () => {3  const browser = await webkit.launch();4  const context = await browser.newContext({ viewport: null });5  const page = await context.newPage();6  await page.screenshot({ path: `screenshot.png` });7  await browser.close();8})();9const { webkit } = require('playwright');10(async () => {11  const browser = await webkit.launch();12  const context = await browser.newContext({ viewport: null });13  const page = await context.newPage();14  await page.emulateMedia({ colorScheme: 'dark' });15  await page.screenshot({ path: `screenshot.png` });16  await browser.close();17})();

Using AI Code Generation

1const { webkit } = require('playwright');2(async () => {3  const browser = await webkit.launch();4  const page = await browser.newPage();5  await page.waitForSelector('input[type="email"]');6  const colorScheme = await page.evaluate(() => {7    return window.matchMedia('(prefers-color-scheme: dark)').matches;8  });9  const input = await page.$('input[type="email"]');10  await input.fill('

Using AI Code Generation

1const {chromium} = require('playwright');2const {fromProtocolColorScheme} = require('playwright/lib/server/chromium/chromiumColorSchemeEmulation.js');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext({6    ...fromProtocolColorScheme('dark'),7  });8  const page = await context.newPage();9  await page.screenshot({ path: `example.png` });10  await browser.close();11})();12module.exports = {13  use: {14    viewport: { width: 1280, height: 720 },15  },16};17import { PlaywrightTestConfig } from '@playwright/test';18const config: PlaywrightTestConfig = {19  use: {20    viewport: { width: 1280, height: 720 },21  },22};23export default config;24module.exports = {25  use: {26    viewport: { width: 1280, height: 720 },27  },28};29import type { PlaywrightTestConfig } from '@playwright/test';30const config: PlaywrightTestConfig = {31  use: {32    viewport: { width: 1280, height: 720 },33  },34};35export default config;36import { PlaywrightTestConfig } from '@playwright/test';37const config: PlaywrightTestConfig = {38  use: {39    viewport: { width: 1280, height: 720 },

Using AI Code Generation

1const {chromium, webkit, firefox} = require('playwright');2const {fromProtocolColorScheme} = require('playwright/lib/server/protocol.js');3(async () => {4    const browser = await chromium.launch();5    const context = await browser.newContext({6        colorScheme: fromProtocolColorScheme('dark')7    });8    const page = await context.newPage();9    await browser.close();10})();11const {chromium, webkit, firefox} = require('playwright');12const {fromProtocolColorScheme} = require('playwright/lib/server/protocol.js');13(async () => {14    const browser = await chromium.launch();15    const context = await browser.newContext({16        colorScheme: fromProtocolColorScheme('dark')17    });18    const page = await context.newPage();19    await browser.close();20})();21const {chromium, webkit, firefox} = require('playwright');22const {fromProtocolColorScheme} = require('playwright/lib/server/protocol.js');23(async () => {24    const browser = await chromium.launch();25    const context = await browser.newContext({26        colorScheme: fromProtocolColorScheme('dark')27    });28    const page = await context.newPage();29    await browser.close();30})();31const {chromium, webkit, firefox} = require('playwright');32const {fromProtocolColorScheme} = require('playwright/lib/server/protocol.js');33(async () => {34    const browser = await chromium.launch();35    const context = await browser.newContext({36        colorScheme: fromProtocolColorScheme('dark')37    });38    const page = await context.newPage();39    await browser.close();40})();41const {chromium, webkit, firefox} = require('playwright');

Using AI Code Generation

1const {chromium} = require('playwright');2const {chromium: chromiumTest} = require('playwright-test');3(async () => {4  const browser = await chromium.launch();5  const context = await browser.newContext();6  await context.fromProtocolColorScheme({colorScheme: 'dark'});7  const page = await context.newPage();8  await page.screenshot({ path: 'dark.png' });9  await context.fromProtocolColorScheme({colorScheme: 'light'});10  await page.screenshot({ path: 'light.png' });11  await browser.close();12})();13const {chromium} = require('playwright');14const {chromium: chromiumTest} = require('playwright-test');15test('should work', async ({page}) => {16  await page.context().fromProtocolColorScheme({colorScheme: 'dark'});17  await page.screenshot({ path: 'dark.png' });18  await page.context().fromProtocolColorScheme({colorScheme: 'light'});19  await page.screenshot({ path: 'light.png' });20});21    at Chromium._onMessage (C:\Users\kumar\Documents\Playwright\playwright-test\node_modules\playwright\lib\server\chromium\chromium.js:75:15)22    at processTicksAndRejections (internal/process/task_queues.js:97:5)23    at async ProgressController.run (C:\Users\kumar\Documents\Playwright\playwright-test\node_modules\playwright\lib\utils\progress.js:101:28)24    at async Chromium.launch (C:\Users\kumar\Documents\Playwright\playwright-test\node_modules\playwright\lib\server\chromium.js:86:20)

Using AI Code Generation

1const { protocolColorScheme } = require('playwright/lib/server/browserContext');2const colorScheme = protocolColorScheme('light');3console.log(colorScheme);4const colorScheme = protocolColorScheme('dark');5console.log(colorScheme);6const { test, expect } = require('@playwright/test');7test('Check color scheme', async ({ page }) => {8  const colorScheme = await page.evaluate(() => {9    return window.matchMedia('(prefers-color-scheme: dark)').matches10      : 'light';11  });12  expect(colorScheme).toBe('dark');13});

Playwright tutorial

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