void NavigationPopCallback(MessageBus bus, NavigationPopInfo navigationPopInfo)
{
if (navigationPopInfo == null)
{
throw new ArgumentNullException(nameof(navigationPopInfo));
}
if (_isBusy)
{
return;
}
_isBusy = true;
Pop(navigationPopInfo);
}
void NormalPop(NavigationPopInfo popInfo)
{
Device.BeginInvokeOnMainThread(async() => {
try
{
await GetTopNavigation().PopAsync(popInfo.WithAnimtation);
popInfo.OnCompletedTask.SetResult(true);
}
catch
{
popInfo.OnCompletedTask.SetResult(false);
}
finally
{
_isBusy = false;
}
});
}
void Pop(NavigationPopInfo popInfo)
{
switch (popInfo.Mode)
{
case NavigationMode.Normal:
NormalPop(popInfo);
break;
case NavigationMode.Modal:
ModalPop(popInfo);
break;
case NavigationMode.Popup:
PopupPop(popInfo);
break;
case NavigationMode.AllPopup:
AllPopupPop(popInfo);
break;
default:
throw new NotImplementedException();
}
}