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32 changes: 32 additions & 0 deletions
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src/Controls/samples/Controls.Sample/Pages/Controls/HybridWebViewPage.xaml
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| <views:BasePage | ||
| xmlns="http://schemas.microsoft.com/dotnet/2021/maui" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" | ||
| x:Class="Maui.Controls.Sample.Pages.HybridWebViewPage" | ||
| xmlns:views="clr-namespace:Maui.Controls.Sample.Pages.Base" | ||
| Title="HybridWebView"> | ||
| <views:BasePage.Content> | ||
|
|
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| <Grid ColumnDefinitions="2*,1*" RowDefinitions="Auto,1*"> | ||
|
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| <Label | ||
| Grid.Row="0" | ||
| Grid.Column="0" | ||
| Text="HybridWebView here" | ||
| x:Name="statusLabel" /> | ||
|
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| <Button | ||
| Grid.Row="0" | ||
| Grid.Column="1" | ||
| Text="Send message to JS" | ||
| Clicked="SendMessageButton_Clicked" /> | ||
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| <HybridWebView | ||
| x:Name="hwv" | ||
| Grid.Row="1" | ||
| Grid.ColumnSpan="2" | ||
| HybridRoot="HybridSamplePage" | ||
| RawMessageReceived="hwv_RawMessageReceived"/> | ||
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| </Grid> | ||
| </views:BasePage.Content> | ||
| </views:BasePage> |
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src/Controls/samples/Controls.Sample/Pages/Controls/HybridWebViewPage.xaml.cs
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| using System; | ||
| using Microsoft.Maui.Controls; | ||
|
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| namespace Maui.Controls.Sample.Pages | ||
| { | ||
| public partial class HybridWebViewPage | ||
| { | ||
| public HybridWebViewPage() | ||
| { | ||
| InitializeComponent(); | ||
| } | ||
|
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| private void SendMessageButton_Clicked(object sender, EventArgs e) | ||
| { | ||
| hwv.SendRawMessage("Hello from C#!"); | ||
| } | ||
|
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| private void hwv_RawMessageReceived(object sender, HybridWebViewRawMessageReceivedEventArgs e) | ||
| { | ||
| Dispatcher.Dispatch(() => statusLabel.Text += e.Message); | ||
| } | ||
| } | ||
| } |
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src/Controls/samples/Controls.Sample/Resources/Raw/HybridSamplePage/docs/sample.pdf
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src/Controls/samples/Controls.Sample/Resources/Raw/HybridSamplePage/index.html
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| <!DOCTYPE html> | ||
|
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| <html lang="en" xmlns="http://www.w3.org/1999/xhtml"> | ||
| <head> | ||
| <meta charset="utf-8" /> | ||
| <title></title> | ||
| <link rel="stylesheet" href="styles/app.css"> | ||
| <script src="scripts/HybridWebView.js"></script> | ||
| <script> | ||
| window.addEventListener( | ||
| "HybridWebViewMessageReceived", | ||
| function (e) { | ||
| var messageFromCSharp = document.getElementById("messageFromCSharp"); | ||
| messageFromCSharp.value += '\r\n' + e.detail.message; | ||
| }); | ||
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| window.addEventListener("HybridWebViewMessageReceived", (e) => console.log(e)); | ||
| </script> | ||
| </head> | ||
| <body> | ||
| <div> | ||
| Hybrid sample! | ||
| </div> | ||
| <div> | ||
| <button onclick="window.HybridWebView.SendRawMessage('Message from JS!')">Send message to C#</button> | ||
| </div> | ||
| <div> | ||
| Message from C#: <textarea readonly id="messageFromCSharp" style="width: 80%; height: 10em;"></textarea> | ||
| </div> | ||
| <div> | ||
| Consider checking out this PDF: <a href="docs/sample.pdf">sample.pdf</a> | ||
| </div> | ||
| </body> | ||
| </html> |
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src/Controls/samples/Controls.Sample/Resources/Raw/HybridSamplePage/scripts/HybridWebView.js
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| function HybridWebViewInit() { | ||
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| function DispatchHybridWebViewMessage(message) { | ||
| const event = new CustomEvent("HybridWebViewMessageReceived", { detail: { message: message } }); | ||
| window.dispatchEvent(event); | ||
| } | ||
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| if (window.chrome && window.chrome.webview) { | ||
| // Windows WebView2 | ||
| window.chrome.webview.addEventListener('message', arg => { | ||
| DispatchHybridWebViewMessage(arg.data); | ||
| }); | ||
| } | ||
| else if (window.webkit && window.webkit.messageHandlers && window.webkit.messageHandlers.webwindowinterop) { | ||
| // iOS and MacCatalyst WKWebView | ||
| window.external = { | ||
| "receiveMessage": message => { | ||
| DispatchHybridWebViewMessage(message); | ||
| } | ||
| }; | ||
| } | ||
| else { | ||
| // Android WebView | ||
| window.addEventListener('message', arg => { | ||
| DispatchHybridWebViewMessage(arg.data); | ||
| }); | ||
| } | ||
| } | ||
|
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| window.HybridWebView = { | ||
| "SendRawMessage": function (message) { | ||
|
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| if (window.chrome && window.chrome.webview) { | ||
| // Windows WebView2 | ||
| window.chrome.webview.postMessage(message); | ||
| } | ||
| else if (window.webkit && window.webkit.messageHandlers && window.webkit.messageHandlers.webwindowinterop) { | ||
| // iOS and MacCatalyst WKWebView | ||
| window.webkit.messageHandlers.webwindowinterop.postMessage(message); | ||
| } | ||
| else { | ||
| // Android WebView | ||
| hybridWebViewHost.sendMessage(message); | ||
| } | ||
| } | ||
| } | ||
|
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| HybridWebViewInit(); |
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src/Controls/samples/Controls.Sample/Resources/Raw/HybridSamplePage/styles/app.css
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| button | ||
| { | ||
| background-color: dodgerblue; | ||
| border-radius: 5px; | ||
| border-width: 1px; | ||
| color: white; | ||
| cursor: pointer; | ||
| margin: 6px; | ||
| text-align: center; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Diagnostics; | ||
| using System.IO; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
|
|
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| namespace Microsoft.Maui.Controls | ||
| { | ||
| /// <summary> | ||
| /// A <see cref="View"/> that presents local HTML content in a web view and allows JavaScript and C# code to interop using messages. | ||
| /// </summary> | ||
| public class HybridWebView : View, IHybridWebView | ||
| { | ||
| /// <summary>Bindable property for <see cref="DefaultFile"/>.</summary> | ||
| public static readonly BindableProperty DefaultFileProperty = | ||
| BindableProperty.Create(nameof(DefaultFile), typeof(string), typeof(HybridWebView), defaultValue: "index.html"); | ||
| /// <summary>Bindable property for <see cref="HybridRoot"/>.</summary> | ||
| public static readonly BindableProperty HybridRootProperty = | ||
| BindableProperty.Create(nameof(HybridRoot), typeof(string), typeof(HybridWebView), defaultValue: "HybridRoot"); | ||
|
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|
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| /// <summary> | ||
| /// Specifies the file within the <see cref="HybridRoot"/> that should be served as the default file. The | ||
| /// default value is <c>index.html</c>. | ||
| /// </summary> | ||
| public string? DefaultFile | ||
| { | ||
| get { return (string)GetValue(DefaultFileProperty); } | ||
| set { SetValue(DefaultFileProperty, value); } | ||
| } | ||
|
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| /// <summary> | ||
| /// The path within the app's "Raw" asset resources that contain the web app's contents. For example, if the | ||
| /// files are located in <c>[ProjectFolder]/Resources/Raw/hybrid_root</c>, then set this property to "hybrid_root". | ||
| /// The default value is <c>HybridRoot</c>, which maps to <c>[ProjectFolder]/Resources/Raw/HybridRoot</c>. | ||
| /// </summary> | ||
| public string? HybridRoot | ||
| { | ||
| get { return (string)GetValue(HybridRootProperty); } | ||
| set { SetValue(HybridRootProperty, value); } | ||
| } | ||
|
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| void IHybridWebView.RawMessageReceived(string rawMessage) | ||
| { | ||
| RawMessageReceived?.Invoke(this, new HybridWebViewRawMessageReceivedEventArgs(rawMessage)); | ||
| } | ||
|
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| /// <summary> | ||
| /// Raised when a raw message is received from the web view. Raw messages are strings that have no additional processing. | ||
| /// </summary> | ||
| public event EventHandler<HybridWebViewRawMessageReceivedEventArgs>? RawMessageReceived; | ||
|
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| public void SendRawMessage(string rawMessage) | ||
| { | ||
| Handler?.Invoke(nameof(IHybridWebView.SendRawMessage), rawMessage); | ||
| } | ||
| } | ||
| } |
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src/Controls/src/Core/HybridWebView/HybridWebViewRawMessageReceivedEventArgs.cs
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| Original file line number | Diff line number | Diff line change |
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| using System; | ||
|
|
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| namespace Microsoft.Maui.Controls | ||
| { | ||
| public class HybridWebViewRawMessageReceivedEventArgs : EventArgs | ||
| { | ||
| public HybridWebViewRawMessageReceivedEventArgs(string? message) | ||
| { | ||
| Message = message; | ||
| } | ||
|
|
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| public string? Message { get; } | ||
| } | ||
| } |
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