public ContactsViewModel(IWorkUnitProvider workUnitProvider)
{
WorkUnitProvider = workUnitProvider;
LoadAllContacts = new SimplerCommand
{
Action = () =>
{
WorkUnit = WorkUnitProvider.ProvideWorkUnit();
LoadedContacts = new ObservableCollection <Contact>(WorkUnit.Contacts.GetAll());
NotifyChangesMade();
}
};
SaveAllContacts = new SimpleCommand
{
Action = () => {
WorkUnit.Save();
LoadedContacts.ToList().ForEach(c => WorkUnit.Reload(c));
NotifyChangesMade();
},
CanExecuteFunc = () => WorkUnit?.IsChanged() ?? false
};
OnEditEnding = new SimplerCommand
{
Action = SaveAllContacts.RaiseCanExecuteChanged
};
DeleteSelected = new SimpleCommand
{
Action = () =>
{
SelectedContacts.ToList().ForEach(c => LoadedContacts.Remove(c));
},
CanExecuteFunc = () => {
return(SelectedContacts?.Count > 0);
}
};
OnSelectionChange = new SimplerCommand <IList>
{
Action = o =>
{
SelectedContacts = new ObservableCollection <Contact>(o.OfType <Contact>());
}
};
}