private void TitleChangeCallback(IntPtr webview, IntPtr userdata)
{
string?title = GLibString.FromPointer(WebKit.GetTitle(webview));
TitleChanged?.Invoke(this, title ?? string.Empty);
}
private async void UriSchemeCallback(IntPtr request, IntPtr userdata)
{
try
{
var uri = new Uri(GLibString.FromPointer(WebKit.UriScheme.GetRequestUri(request)) !);
var host = new Uri(uri.GetComponents(UriComponents.SchemeAndServer, UriFormat.Unescaped));
if (host == customHost)
{
using var contentStream = await Application.ContentProvider.GetStreamAsync(uri);
if (contentStream != null)
{
IntPtr stream = IntPtr.Zero;
try
{
if (contentStream is UnmanagedMemoryStream unmanagedMemoryStream)
{
unsafe
{
long length = unmanagedMemoryStream.Length - unmanagedMemoryStream.Position;
stream = GLib.CreateStreamFromData((IntPtr)unmanagedMemoryStream.PositionPointer, length, IntPtr.Zero);
FinishUriSchemeCallback(request, stream, length, uri);
return;
}
}
else
{
byte[] data;
long length;
if (contentStream is MemoryStream memoryStream)
{
data = memoryStream.GetBuffer();
length = memoryStream.Length;
}
else
{
using var copyStream = new MemoryStream();
await contentStream.CopyToAsync(copyStream);
data = copyStream.GetBuffer();
length = copyStream.Length;
}
unsafe
{
fixed(byte *dataPtr = data)
{
stream = GLib.CreateStreamFromData((IntPtr)dataPtr, length, IntPtr.Zero);
FinishUriSchemeCallback(request, stream, length, uri);
return;
}
}
}
}
finally { if (stream != IntPtr.Zero)
{
GLib.UnrefObject(stream);
}
}
}
}
FinishUriSchemeCallbackWithError(request, 4); // 4 = file not found
}
catch { FinishUriSchemeCallbackWithError(request, 24); } // 24 = failed for unspecified reason
}