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Add RunFromString & RunFromResolver for WebWindow.Blazor #28

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Add RunFromString & RunFromResolver for WebWindow.Blazor #28

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58 changes: 42 additions & 16 deletions src/WebWindow.Blazor/ComponentsDesktop.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
Expand All @@ -23,7 +24,46 @@ public static class ComponentsDesktop

internal static WebWindow webWindow;

public static void RunFromString<TStartup>(string windowTitle, string indexContent, string rootPath)
{
var contentRootAbsolute = Path.GetDirectoryName(Path.GetFullPath(rootPath));

RunFromResolver<TStartup>(windowTitle, DefaultBlazorResolver(contentRootAbsolute, (string url, out string contentType) =>
{
contentType = "text/html";
return new MemoryStream(Encoding.Default.GetBytes(indexContent));
}));
}

public static void Run<TStartup>(string windowTitle, string hostHtmlPath)
{
var contentRootAbsolute = Path.GetDirectoryName(Path.GetFullPath(hostHtmlPath));

RunFromResolver<TStartup>(windowTitle, DefaultBlazorResolver(contentRootAbsolute, (string url, out string contentType) =>
{
contentType = GetContentType(hostHtmlPath);
return File.Exists(hostHtmlPath) ? File.OpenRead(hostHtmlPath) : null;
}));
}

private static ResolveWebResourceDelegate DefaultBlazorResolver(string contentRootAbsolute, ResolveWebResourceDelegate indexResolver)
{
return (string url, out string contentType) =>
{
// TODO: Only intercept for the hostname 'app' and passthrough for others
// TODO: Prevent directory traversal?
var appFile = Path.Combine(contentRootAbsolute, new Uri(url).AbsolutePath.Substring(1));
if (appFile == contentRootAbsolute)
{
return indexResolver(url, out contentType);
}

contentType = GetContentType(appFile);
return File.Exists(appFile) ? File.OpenRead(appFile) : null;
};
}

public static void RunFromResolver<TStartup>(string windowTitle, ResolveWebResourceDelegate resolver)
{
DesktopSynchronizationContext.UnhandledException += (sender, exception) =>
{
Expand All @@ -32,21 +72,7 @@ public static void Run<TStartup>(string windowTitle, string hostHtmlPath)

webWindow = new WebWindow(windowTitle, options =>
{
var contentRootAbsolute = Path.GetDirectoryName(Path.GetFullPath(hostHtmlPath));

options.SchemeHandlers.Add(BlazorAppScheme, (string url, out string contentType) =>
{
// TODO: Only intercept for the hostname 'app' and passthrough for others
// TODO: Prevent directory traversal?
var appFile = Path.Combine(contentRootAbsolute, new Uri(url).AbsolutePath.Substring(1));
if (appFile == contentRootAbsolute)
{
appFile = hostHtmlPath;
}

contentType = GetContentType(appFile);
return File.Exists(appFile) ? File.OpenRead(appFile) : null;
});
options.SchemeHandlers.Add(BlazorAppScheme, resolver);

// framework:// is resolved as embedded resources
options.SchemeHandlers.Add("framework", (string url, out string contentType) =>
Expand All @@ -57,7 +83,7 @@ public static void Run<TStartup>(string windowTitle, string hostHtmlPath)
});

CancellationTokenSource appLifetimeCts = new CancellationTokenSource();
Task.Factory.StartNew(async() =>
Task.Factory.StartNew(async () =>
{
try
{
Expand Down