public void ClearFavoriteContact()
{
LoadedContacts.Select(x => x.IsFavorite = false);
Application.Current.Properties.Remove(typeof(Contact).FullName);
Application.Current.SavePropertiesAsync();
}
public async Task <IEnumerable <ContactList> > GetContactsGroups(bool forceReload = false)
{
List <ContactList> result = new List <ContactList>();
// Reload contact list if requested, otherwise reuse
if (forceReload == true || LoadedContacts == null || !LoadedContacts.Any())
{
LoadedContacts = await _platformContactService.GetContacts();
}
foreach (var contact in LoadedContacts)
{
contact.IsFavorite = false;
}
// Get favorite contact
var favoriteContact = LoadFavoriteContact();
// Update favorite contact in list
if (favoriteContact != null)
{
var matchingContact = LoadedContacts.FirstOrDefault(x => x.Number == favoriteContact.Number);
if (matchingContact != null)
{
matchingContact.IsFavorite = true;
favoriteContact = matchingContact;
var favoriteContactList = new ContactList
{
favoriteContact
};
favoriteContactList.Heading = "Favorite";
result.Add(favoriteContactList);
}
}
var headers = LoadedContacts.Select(x => GetHeading(x));
var uniqueHeaders = new HashSet <string>(headers).ToList();
uniqueHeaders.Sort((x, y) => string.Compare(x, y));
foreach (var uniqueHeader in uniqueHeaders)
{
var group = new ContactList
{
Heading = uniqueHeader
};
group.AddRange(LoadedContacts.Where(x => !string.IsNullOrEmpty(x.Name) && x.Name[0].ToString() == uniqueHeader));
result.Add(group);
}
return(result);
}
public void SaveFavoriteContact(Contact contact)
{
LoadedContacts.Select(x => x.IsFavorite = false);
string json = JsonConvert.SerializeObject(contact);
Application.Current.Properties[contact.GetType().FullName] = json;
Application.Current.SavePropertiesAsync();
}
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>());
}
};
}