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How to use MediaFeatureValue class of PuppeteerSharp package

Best Puppeteer-sharp code snippet using PuppeteerSharp.MediaFeatureValue

Page.cs

Source:Page.cs

...754        /// ]]>755        /// </code>756        /// </example>757        /// <returns>Emulate features task</returns>758        public Task EmulateMediaFeaturesAsync(IEnumerable<MediaFeatureValue> features)759            => Client.SendAsync("Emulation.setEmulatedMedia", new EmulationSetEmulatedMediaFeatureRequest { Features = features });760        /// <summary>761        /// Sets the viewport.762        /// In the case of multiple pages in a single browser, each page can have its own viewport size.763        /// <see cref="SetViewportAsync(ViewPortOptions)"/> will resize the page. A lot of websites don't expect phones to change size, so you should set the viewport before navigating to the page.764        /// </summary>765        /// <example>766        ///<![CDATA[767        /// using(var page = await browser.NewPageAsync())768        /// {769        ///     await page.SetViewPortAsync(new ViewPortOptions770        ///     {771        ///         Width = 640, 772        ///         Height = 480, ...

EmulateMediaFeaturesTests.cs

Source:EmulateMediaFeaturesTests.cs

...12        }13        [Fact]14        public async Task ShouldWork()15        {16            await Page.EmulateMediaFeaturesAsync(new MediaFeatureValue[] {17                new MediaFeatureValue { MediaFeature = MediaFeature.PrefersReducedMotion, Value = "reduce" },18            });19            Assert.True(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-reduced-motion: reduce)').matches"));20            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-reduced-motion: no-preference)').matches"));21            await Page.EmulateMediaFeaturesAsync(new MediaFeatureValue[] {22                new MediaFeatureValue { MediaFeature = MediaFeature.PrefersColorScheme, Value = "light" },23            });24            Assert.True(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: light)').matches"));25            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: dark)').matches"));26            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: no-preference)').matches"));27            await Page.EmulateMediaFeaturesAsync(new MediaFeatureValue[] {28                new MediaFeatureValue { MediaFeature = MediaFeature.PrefersColorScheme, Value = "dark" },29            });30            Assert.True(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: dark)').matches"));31            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: light)').matches"));32            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: no-preference)').matches"));33            await Page.EmulateMediaFeaturesAsync(new MediaFeatureValue[] {34                new MediaFeatureValue { MediaFeature = MediaFeature.PrefersReducedMotion, Value = "reduce" },35                new MediaFeatureValue { MediaFeature = MediaFeature.PrefersColorScheme, Value = "light" },36            });37            Assert.True(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-reduced-motion: reduce)').matches"));38            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-reduced-motion: no-preference)').matches"));39            Assert.True(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: light)').matches"));40            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: dark)').matches"));41            Assert.False(await Page.EvaluateFunctionAsync<bool>("() => matchMedia('(prefers-color-scheme: no-preference)').matches"));42        }43    }44}...

MediaFeature.cs

Source:MediaFeature.cs

...3using Newtonsoft.Json.Converters;4namespace PuppeteerSharp5{6    /// <summary>7    /// Meadia Feature. See <see cref="Page.EmulateMediaFeaturesAsync(System.Collections.Generic.IEnumerable{MediaFeatureValue})"/>8    /// </summary>9    [JsonConverter(typeof(StringEnumConverter))]10    public enum MediaFeature11    {12        /// <summary>13        /// prefers-color-scheme media feature.14        /// </summary>15        [EnumMember(Value = "prefers-color-scheme")]16        PrefersColorScheme,17        /// <summary>18        /// prefers-reduced-motion media feature.19        /// </summary>20        [EnumMember(Value = "prefers-reduced-motion")]21        PrefersReducedMotion...

MediaFeatureValue.cs

Source:MediaFeatureValue.cs

1ï»¿using Newtonsoft.Json;2namespace PuppeteerSharp3{4    /// <summary>5    /// Media Feature. <see cref="Page.EmulateMediaFeaturesAsync(System.Collections.Generic.IEnumerable{MediaFeatureValue})"/>6    /// </summary>7    public class MediaFeatureValue8    {9        /// <summary>10        /// The CSS media feature name. Supported names are `'prefers-colors-scheme'` and `'prefers-reduced-motion'`.11        /// </summary>12        [JsonProperty(PropertyName = "name")]13        public MediaFeature MediaFeature { get; set; }14        /// <summary>15        /// The value for the given CSS media feature.16        /// </summary>17        public string Value { get; set; }18    }19}...

EmulationSetEmulatedMediaFeatureRequest.cs

Source:EmulationSetEmulatedMediaFeatureRequest.cs

...4namespace PuppeteerSharp.Messaging5{6    internal class EmulationSetEmulatedMediaFeatureRequest7    {8        public IEnumerable<MediaFeatureValue> Features { get; set; }9    }10}...

MediaFeatureValue

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3    Args = new string[] { "--start-maximized" }4});5var page = await browser.NewPageAsync();6var mediaFeatureValue = await page.EvaluateFunctionHandleAsync(@"(feature) => {7    return window.matchMedia(feature).matches;8}", "screen and (max-width: 600px)");9var value = await mediaFeatureValue.JsonValueAsync();10Console.WriteLine(value);11await browser.CloseAsync();12var browser = await Puppeteer.LaunchAsync(new LaunchOptions13{14    Args = new string[] { "--start-maximized" }15});16var page = await browser.NewPageAsync();17var mediaFeatureValue = await page.EvaluateFunctionHandleAsync(@"(feature) => {18    return window.matchMedia(feature).matches;19}", "screen and (max-width: 600px)");20var value = await mediaFeatureValue.JsonValueAsync();21Console.WriteLine(value);22await browser.CloseAsync();23var browser = await Puppeteer.LaunchAsync(new LaunchOptions24{25    Args = new string[] { "--start-maximized" }26});27var page = await browser.NewPageAsync();28var mediaFeatureValue = await page.EvaluateFunctionHandleAsync(@"(feature) => {29    return window.matchMedia(feature).matches;30}", "screen and (max-width: 600px)");31var value = await mediaFeatureValue.JsonValueAsync();32Console.WriteLine(value);33await browser.CloseAsync();34var browser = await Puppeteer.LaunchAsync(new LaunchOptions35{36    Args = new string[] { "--start-maximized" }37});38var page = await browser.NewPageAsync();39var mediaFeatureValue = await page.EvaluateFunctionHandleAsync(@"(feature) => {

MediaFeatureValue

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true });2var page = await browser.NewPageAsync();3var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("() => window.matchMedia('(prefers-color-scheme: dark)').matches");4Console.WriteLine(mediaFeatureValue.Matches);5await browser.CloseAsync();6var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true });7var page = await browser.NewPageAsync();8var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("() => window.matchMedia('(prefers-color-scheme: dark)').media");9Console.WriteLine(mediaFeatureValue.Media);10await browser.CloseAsync();11var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true });12var page = await browser.NewPageAsync();13var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("() => window.matchMedia('(prefers-color-scheme: dark)').media");14Console.WriteLine(mediaFeatureValue.Media);15await browser.CloseAsync();16var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true });17var page = await browser.NewPageAsync();18var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("() => window.matchMedia('(prefers-color-scheme: dark)')");19Console.WriteLine(mediaFeatureValue);20await browser.CloseAsync();21var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = true });22var page = await browser.NewPageAsync();23var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("() => window.matchMedia('(prefers-color-scheme: dark)')");24Console.WriteLine(mediaFeatureValue);25await browser.CloseAsync();

MediaFeatureValue

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static void Main(string[] args)7        {8            var task = RunAsync();9            task.Wait();10        }11        static async Task RunAsync()12        {13            var browser = await Puppeteer.LaunchAsync(new LaunchOptions14            {15            });16            var page = await browser.NewPageAsync();17            await page.WaitForSelectorAsync("input[title='Search']");18            await page.TypeAsync("input[title='Search']", "puppeteer");19            await page.Keyboard.PressAsync("Enter");20            await page.WaitForNavigationAsync();21            await page.ScreenshotAsync("screenshot.png");22            var media = await page.EvaluateFunctionAsync<MediaFeatureValue>("() => matchMedia('screen and (min-width: 640px)').matches");23            Console.WriteLine(media);24            await browser.CloseAsync();25        }26    }27}28var media = await page.EvaluateFunctionAsync<MediaFeatureValue>("() => matchMedia('screen and (min-width: 640px)').matches");29   at PuppeteerSharp.Helpers.JsonHelper.ToObject[T](String json)30   at PuppeteerSharp.Page.EvaluateFunctionAsync[T](String pageFunction, Object[] args)31   at PuppeteerSharp_Console.Program.RunAsync() in C:\Users\gurneet.kaur\source\repos\PuppeteerSharp_Console\PuppeteerSharp_Console\Program.cs:line 3632   at PuppeteerSharp_Console.Program.Main(String[] args) in C:\Users\gurneet.kaur\source\repos\PuppeteerSharp_Console\PuppeteerSharp_Console\Program.cs:line 10

MediaFeatureValue

Using AI Code Generation

1var options = new LaunchOptions { Headless = true };2var browser = await Puppeteer.LaunchAsync(options);3var page = await browser.NewPageAsync();4var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("window.matchMedia(\"(prefers-color-scheme: dark)\")");5Console.WriteLine(mediaFeatureValue.Features["prefers-color-scheme"]);6await browser.CloseAsync();7var options = new LaunchOptions { Headless = true };8var browser = await Puppeteer.LaunchAsync(options);9var page = await browser.NewPageAsync();10var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("window.matchMedia(\"(prefers-color-scheme: dark)\")");11Console.WriteLine(mediaFeatureValue.Features["prefers-color-scheme"]);12await browser.CloseAsync();13var options = new LaunchOptions { Headless = true };14var browser = await Puppeteer.LaunchAsync(options);15var page = await browser.NewPageAsync();16var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("window.matchMedia(\"(prefers-color-scheme: dark)\")");17Console.WriteLine(mediaFeatureValue.Features["prefers-color-scheme"]);18await browser.CloseAsync();19var options = new LaunchOptions { Headless = true };20var browser = await Puppeteer.LaunchAsync(options);21var page = await browser.NewPageAsync();22var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("window.matchMedia(\"(prefers-color-scheme: dark)\")");23Console.WriteLine(mediaFeatureValue.Features["prefers-color-scheme"]);24await browser.CloseAsync();25var options = new LaunchOptions { Headless = true };26var browser = await Puppeteer.LaunchAsync(options);27var page = await browser.NewPageAsync();

MediaFeatureValue

Using AI Code Generation

1var browserFetcher = new BrowserFetcher();2await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);3var browser = await Puppeteer.LaunchAsync(new LaunchOptions4{5    ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision),6    Args = new string[] { "--start-maximized" }7});8var page = await browser.NewPageAsync();9await page.SetViewportAsync(new ViewPortOptions { Width = 1920, Height = 1080 });10var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("(feature) => window.matchMedia(feature).matches", "(max-width: 1000px)");11if (mediaFeatureValue.Value)12{13    Assert.Pass();14}15{16    Assert.Fail();17}18var browserFetcher = new BrowserFetcher();19await browserFetcher.DownloadAsync(BrowserFetcher.DefaultRevision);20var browser = await Puppeteer.LaunchAsync(new LaunchOptions21{22    ExecutablePath = browserFetcher.GetExecutablePath(BrowserFetcher.DefaultRevision),23    Args = new string[] { "--start-maximized" }24});25var page = await browser.NewPageAsync();26await page.SetViewportAsync(new ViewPortOptions { Width = 1920, Height = 1080 });27var mediaFeatureValue = await page.EvaluateFunctionAsync<MediaFeatureValue>("(feature) => window.matchMedia(feature).matches", "(min-width: 1000px)");28if (mediaFeatureValue.Value)29{30    Assert.Pass();31}32{33    Assert.Fail();34}

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