private Task <IHtmlBinding> Navigate(Uri uri, object viewModel, JavascriptBindingMode mode = JavascriptBindingMode.TwoWay)
{
if (uri == null)
{
throw ExceptionHelper.GetArgument($"ViewModel not registered: {viewModel.GetType()}");
}
_Navigating = true;
var oldvm = GetMainViewModel(Binding) as INavigable;
if (_UseINavigable && (oldvm != null))
{
oldvm.Navigation = null;
}
if (_CurrentWebControl != null)
{
_CurrentWebControl.HtmlWindow.Crashed -= Crashed;
}
var closetask = (_CurrentWebControl != null) ? _Window.CloseAsync() : TaskHelper.Ended();
_NextWebControl = _WebViewLifeCycleManager.Create();
_NextWebControl.HtmlWindow.ConsoleMessage += ConsoleMessage;
var moderWindow = _NextWebControl.HtmlWindow as IModernWebBrowserWindow;
var injectorFactory = GetInjectorFactory(uri);
var engine = new HtmlViewEngine(_NextWebControl, injectorFactory, _webSessionLogger);
var dataContext = new DataContextViewModel(viewModel);
var initVm = HtmlBinding.GetBindingBuilder(engine, dataContext, mode);
if (moderWindow != null)
{
var debugContext = _WebViewLifeCycleManager.DebugContext;
EventHandler <BeforeJavascriptExcecutionArgs> before = null;
before = (o, e) =>
{
moderWindow.BeforeJavascriptExecuted -= before;
e.JavascriptExecutor(_JavascriptFrameworkManager.GetMainScript(debugContext));
};
moderWindow.BeforeJavascriptExecuted += before;
}
var tcs = new TaskCompletionSource <IHtmlBinding>();
EventHandler <LoadEndEventArgs> sourceupdate = null;
sourceupdate = async(o, e) =>
{
_NextWebControl.HtmlWindow.LoadEnd -= sourceupdate;
var builder = await initVm;
await builder.CreateBinding(_WebViewLifeCycleManager.DebugContext).WaitWith(closetask, t => Switch(t, dataContext.Window, tcs)).ConfigureAwait(false);
};
Url = uri;
_NextWebControl.HtmlWindow.LoadEnd += sourceupdate;
_NextWebControl.HtmlWindow.NavigateTo(uri);
return(tcs.Task);
}