protected virtual async Task OnShellNavigatingOut(string sender, ShellNavigatingEventArgs args)
{
ShellNavigatingEventArgs = args;
AppErrorService.ClearInlineValidators();
}
protected virtual bool Validate(Dictionary <string, object> properties = null, Dictionary <string, string> propertiesDisplayName = null, List <Tuple <string, bool, string> > validators = null)
{
// clean any inline val property
AppErrorService.ClearInlineValidators();
if (properties?.Count > 0)
{
if (ValidatePropertyList(properties, propertiesDisplayName, validators))
{
return(true);
}
}
else
{
var isValid = ValidateProperties(null, validators);
if (isValid)
{
return(true);
}
}
string formattedErrors = "";
var errors = GetAllErrors();
// invalid but no errors: move on
if (!errors.Any())
{
return(true);
}
foreach (var key in errors.Keys)
{
// TODO we would need to replace the CamelCase filed key with a globalized name
// in the meantime, we de-camel case
//formattedErrors += $"\n\u2022 {key.SplitCamelCase()} : {string.Join("\n", errors[key])}";
if (errors.Keys.Count == 1)
{
formattedErrors = string.Join("\n", errors[errors.Keys.First()]);
}
else
{
formattedErrors += $"\u2022 {string.Join("\n", errors[key])}\n";
}
// replace property name with display name
if (propertiesDisplayName != null)
{
formattedErrors = propertiesDisplayName.Aggregate(formattedErrors, (current, propertyDisplayName) => current.Replace(propertyDisplayName.Key, propertyDisplayName.Value));
}
// split camel case
formattedErrors = formattedErrors.SplitCamelCase();
}
formattedErrors = formattedErrors.ReplaceLast("\n", "");
AppErrorService.AddError(formattedErrors, ViewModelError.ErrorAction.Display, ViewModelError.ErrorSeverity.Warning, errors: errors);
AppErrorService.ProcessErrors();
return(false);
}