protected BlazorWebView(Dispatcher dispatcher, bool initOnParentSet)
{
_initOnParentSet = initOnParentSet;
_dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
_webView = new WebViewExtended(this.ErrorHandler);
_webView.OnNavigationStarting += HandleNavigationStarting;
_webView.OnNavigationFinished += HandleNavigationFinished;
protected BlazorWebView(Dispatcher dispatcher, bool initOnParentSet)
{
_initOnParentSet = initOnParentSet;
Content = _webView = new WebViewExtended();
_dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
_webView.SchemeHandlers.Add(BlazorAppScheme, (string url, out string contentType) =>
{
var uri = new Uri(url);
if (uri.Host.Equals("0.0.0.0", StringComparison.Ordinal))
{
// TODO: Prevent directory traversal?
var contentRootAbsolute = Path.GetFullPath(ContentRoot ?? ".");
var appFile = Path.Combine(contentRootAbsolute, uri.AbsolutePath.Substring(1));
if (appFile == contentRootAbsolute)
{
contentType = "text/html";
const string IndexHtmlFilename = "index.html";
var indexHtmlPath = Path.Combine(contentRootAbsolute, IndexHtmlFilename);
if (BlazorHybridHost.TryGetEmbeddedResourceFile(IndexHtmlFilename, out var fileStream))
{
return fileStream;
}
else
{
// Use default HTML if none was provided in ContentRoot
return new MemoryStream(Encoding.UTF8.GetBytes(@"<!DOCTYPE html>
<html>
<head>
<meta charset=""utf-8"" />
<meta name=""viewport"" content=""width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"" />
<base href=""/"" />
<style type=""text/css"">
#blazor-error-ui { background: lightyellow; bottom: 0; box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2); display: none; left: 0; padding: 0.6rem 1.25rem 0.7rem 1.25rem; position: fixed; width: 100%; z-index: 1000; }
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }
</style>
</head>
<body>
<app></app>
<div id=""blazor-error-ui"">
An unhandled error has occurred.
<a href="""" class=""reload"">Reload</a>
<a class=""dismiss"">🗙</a>
</div>
</body>
</html>
"));
}
}
else if (BlazorHybridHost.TryGetEmbeddedResourceFile(uri.AbsolutePath.Substring(1), out var fileStream))
{
contentType = GetContentType(uri.AbsolutePath.Substring(1));
return fileStream;
}
}
contentType = default;
return null;
});
// framework:// is resolved as embedded resources
_webView.SchemeHandlers.Add("framework", (string url, out string contentType) =>
{
contentType = GetContentType(url);
return SupplyFrameworkFile(url);
});
_ipc = new IPC(_webView);
_jsRuntime = new BlazorHybridJSRuntime(_ipc);
}
