/// <summary>
/// This method provides a wrapper for any method which takes one parameter without return-type AND
/// is going to be called in a command.
/// It shows loading icon when starting internal method and hide the loading icon when finished.
/// </summary>
/// <param name="func">The function / method that is going to be called in this method.</param>
/// <param name="messageSettings">Error message box settings</param>
/// <returns></returns>
protected virtual async Task InvokeAsync <T>(Func <T, Task> func, T arg, InvokingSettings messageSettings = null)
{
var fn2 = new Func <Task>(async() => {
await func(arg);
});
await InvokeAsync(fn2, messageSettings);
}
/// <summary>
/// This method provides a wrapper for any method which takes no parameters without return type AND
/// is going to be called in a command.
/// </summary>
/// <param name="func">The function / method that is going to be called in this method.</param>
/// <param name="invokingSettings">Settings for invoking</param>
/// <returns></returns>
protected virtual async Task InvokeAsync(Func <Task> func, InvokingSettings invokingSettings = null)
{
InvokingSettings settings = invokingSettings ?? new InvokingSettings();
try {
if (settings.Confirmation != null)
{
var confirmation = settings.Confirmation;
var result = await DialogService.ConfirmAsync(
confirmation.Message, confirmation.Title,
confirmation.OkButtonLabel, confirmation.CancelButtonLabel,
confirmation.CancellationToken);
if (result == false)
{
return;
}
}
DialogService.ShowLoading(settings.BusyMessage);
await func();
DialogService.HideLoading(settings.BusyMessage);
if (settings.Info != null)
{
var info = settings.Info;
await DialogService.ShowAlertAsync(
info.Message, info.Title, info.ButtonLabel);
}
if (settings.Callback != null)
{
await settings.Callback();
}
} catch (Exception) {
DialogService.HideLoading(settings.BusyMessage);
throw;
}
}
