public ScriptEventResult Execute()
{
if (_returnType == ReturnType.Unsupported)
{
//Can't use anything that's not void: SciterValue, Task<void> or Task<SciterValue>
return(ScriptEventResult.Failed());
}
if (_methodInfo != null)
{
var parameters = BuildParameters();
{
try
{
if (_isWrappedCallback && _isAwaitable)
{
((Task)_methodInfo.Invoke(_owner, parameters))?.ContinueWith(
task =>
{
if (task.IsFaulted)
{
return;
}
if (!task.GetType().IsGenericType)
{
return;
}
_callbackValue?.Invoke((task as Task <SciterValue>)?.Result ?? SciterValue.Null, SciterValue.Null);
});
return(ScriptEventResult.Successful());
}
var ret = _methodInfo.Invoke(_owner, parameters);
// Awaitable Tasks should return Successful immediately, don't block the main Thread waiting for completion!
if (_isAwaitable)
{
return(ScriptEventResult.Successful());
}
var value = (ret as SciterValue) ?? SciterValue.Null;
return(ScriptEventResult.Successful(value));
}
catch (TargetInvocationException e)
{
return(ExceptionCallbackResult(e.InnerException ?? e));
}
catch (Exception e)
{
return(ExceptionCallbackResult(e));
}
}
}
// not handled
return(ScriptEventResult.Failed());
}
private ScriptEventResult ExceptionCallbackResult(Exception e)
{
if (!_isWrappedCallback || !_isAwaitable)
{
return(ScriptEventResult.Successful(SciterValue.MakeError(e?.Message)));
}
//TODO: Clean this up, maybe change the Dictionary<> implementation?
var properties = (e)
.GetType()
.GetProperties(BindingFlags.Instance | BindingFlags.Public)
.Where(w => typeof(IConvertible).IsAssignableFrom(w.PropertyType))
.ToDictionary(key => key.Name, value => value.GetValue(e) as IConvertible);
//.ToDictionary(key => key.Name, value => SciterValue.Create(value.GetValue(e.InnerException)));
properties.Add(nameof(Type), e?.GetType().FullName);
_callbackValue?.Invoke(SciterValue.Null, SciterValue.Create(properties));
return(ScriptEventResult.Successful());
}
/// <summary>
/// This method is typically used with WinForms applications
/// </summary>
/// <param name="element"></param>
/// <param name="methodName"></param>
/// <param name="args"></param>
// TODO: Should be specific to WinForms?
protected virtual ScriptEventResult OnScriptCall(SciterElement element, string methodName, SciterValue[] args)
{
return(ScriptEventResult.Failed());
}