public void OnConsoleMessageEvent(object sender, DotNetBrowser.Events.ConsoleEventArgs e)
{
_consoleLog.AppendLine(e.Message ?? "");
if (!_doNotDisplayJavaScriptErrors &&
(int)e.Level > 0)
{
string friendlyErrorMessage = GenerateFriendlyErrorMessage(_javaScriptExecutionHandler, e);
// Ignore some of the errors:
if (!friendlyErrorMessage.Contains("DESCRIPTION: BSSO Telemetry:") && // Ignore this error on Azure login
!friendlyErrorMessage.Contains("https://xhr.spec.whatwg.org/")) // Ignore the error "Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/."
{
_errorsPendingToBeDisplayed.Add(friendlyErrorMessage);
}
// In case of CORS-related errors, display the tutorial:
if (friendlyErrorMessage.Contains("Access-Control") &&
!_corsTutorialAlreadyDisplayed &&
!CrossDomainCallsHelper.IsBypassCORSErrors)
{
_corsTutorialAlreadyDisplayed = true;
System.Diagnostics.Process.Start("https://opensilver.net/permalinks/simulator_cors_errors.aspx");
}
// Display the message asynchronously on the UI thread:
_dispatcher.BeginInvoke((Action)(() =>
{
if (!_doNotDisplayJavaScriptErrors) // Note: this check is here because the value can have changed since the check at the beginning of the method due to the fact that we are inside a Dispatcher.BeginInvoke.
{
if (_errorsPendingToBeDisplayed.Count > 0) // Note: it can be empty if the errors have accumulated and the first Dispatcher.BeginInvoke has displayed all the messages at once.
{
// Aggregate all the error messages raised so far:
string aggregatedErrors = String.Join(Environment.NewLine + Environment.NewLine, _errorsPendingToBeDisplayed);
// Clear the list of pending errors to display:
_errorsPendingToBeDisplayed.Clear();
// Display the message:
var stackPanel = new StackPanel()
{
VerticalAlignment = VerticalAlignment.Center
};
var checkBox1 = new CheckBox()
{
Content = "Do not display errors again during this session.",
Margin = new Thickness(20, 0, 0, 0),
IsChecked = false
};
//var checkBox2 = new CheckBox()
//{
// Content = "Raise an exception immediately when a JS error occurs.",
// Margin = new Thickness(20, 5, 0, 0),
// IsChecked = _raiseExceptionWhenJSErrorOccurs
//};
//checkBox2.Checked += (s2, e2) => { if (!_raiseExceptionWhenJSErrorOccurs) { MessageBox.Show("TIP: You can relaunch the application by clicking the 'Tools' icon in the bottom-left corner of the Simulator window and then clicking 'Re-instantiate App.xaml.cs'.", "TIP", MessageBoxButton.OK, MessageBoxImage.Information); } };
stackPanel.Children.Add(checkBox1);
//stackPanel.Children.Add(checkBox2);
var msgBox = new MessageBoxScrollable()
{
Value = aggregatedErrors
+ Environment.NewLine
+ Environment.NewLine
+ Environment.NewLine
+ TipForDebugging,
Title = "JavaScript Error(s)",
AdditionalContentToDisplay = stackPanel,
};
if (msgBox.Visibility == Visibility.Hidden) // Note: we cannot call the "ShowDialog" method if the window is already visible.
{
msgBox.ShowDialog();
}
else
{
msgBox.Show();
}
if (checkBox1.IsChecked == true)
{
_doNotDisplayJavaScriptErrors = true;
}
//if (checkBox2.IsChecked == true)
// _raiseExceptionWhenJSErrorOccurs = true;
}
}
}));
}
}
public static string GenerateFriendlyErrorMessage(JavaScriptExecutionHandler javaScriptExecutionHandler, DotNetBrowser.Events.ConsoleEventArgs e)
{
// Display the error description:
string friendlyErrorMessage = "---- JAVASCRIPT ERROR ----"
+ Environment.NewLine + Environment.NewLine + "DESCRIPTION: " + (e.Message ?? "n/a");
// Display the source file and the line where the error occurred:
if (!string.IsNullOrEmpty(e.Source) && !e.Source.Contains(SimulatorRootFileNameWithoutExtension))
{
friendlyErrorMessage += Environment.NewLine + Environment.NewLine + "SOURCE: " + e.Source
+ Environment.NewLine + Environment.NewLine + "LINE: " + e.LineNumber.ToString();
}
/*
* // Attempt to display the code that has the issue, if any:
* if (!string.IsNullOrEmpty(e.Source) && e.Source.Contains(SimulatorRootFileNameWithoutExtension))
* {
* string lastExecutedJavaScriptCode = javaScriptExecutionHandler.GetLastExecutedJavaScriptCode();
* if (!string.IsNullOrWhiteSpace(lastExecutedJavaScriptCode))
* {
* string[] lines = lastExecutedJavaScriptCode.Split(new string[] { "\r\n", "\r", "\n" }, StringSplitOptions.None);
* int lineNumber = e.LineNumber;
* if (lineNumber > 0 && lineNumber <= lines.Length)
* {
* lastExecutedJavaScriptCode = lines[lineNumber - 1];
* }
* friendlyErrorMessage += Environment.NewLine + Environment.NewLine + "LAST EXECUTED CODE:"
+ Environment.NewLine + lastExecutedJavaScriptCode;
+ }
+ }
*/
return(friendlyErrorMessage);
}
