public PlanetDetailViewModel(SolPlanet p, INavigation nav) : base(nav)
{
//Keep a reference to the original
_original = p;
//Make an indepednent copy
Model = new SolPlanet(p);
//Commands
SaveCommand = new Command(execute: () =>
{
//Note if the group needs changing
bool hasMovedGroup = (_original.Explored != Model.Explored);
//Update the original planet data (mutable reference type)
_original.Copy(Model);
//Message back if the group has changed
if (hasMovedGroup)
{
MessagingCenter.Send(this, "PlanetUpdated", _original);
}
//Navigate back
_ = Navigation.PopAsync();
});
}
//Overwrite the original private void Save() => _original.Copy(Model);