private void RegisterForMessages()
{
Messenger.Default.Register<NotificationMessage<ItemModel>>(this, message =>
{
if (message.Notification == Notifications.NotifyItemAdded)
{
ItemViewModel newItem = new ItemViewModel(message.Content);
_items.Add(newItem);
}
else if (message.Notification == Notifications.NotifyItemDeleted)
{
ItemViewModel itemVM = _items.Where(i => i.Item.ID == message.Content.ID).FirstOrDefault();
if (itemVM != null)
{
SelectedItem = null;
_items.Remove(itemVM);
itemVM.Cleanup();
}
}
else if (message.Notification == Notifications.NotifyItemSaved)
{
ItemViewModel itemVM = _items.Where(i => i.Item.ID == message.Content.ID).FirstOrDefault();
if (itemVM != null)
{
SelectedItem = null;
_items[_items.IndexOf(itemVM)] = new ItemViewModel(message.Content);
itemVM.Cleanup();
itemVM = null;
}
}
else if (message.Notification == Commands.SelectItem)
{
if (CommandSelect.CanExecute(null))
CommandSelect.Execute(null);
}
});
}
private void BuildItemsCollection()
{
if (_items == null)
_items = new ObservableCollection<ItemViewModel>();
else
_items.Clear();
_itemService.GetItems().ToList().ForEach(item =>
{
ItemViewModel itemVM = new ItemViewModel(item);
_items.Add(itemVM);
});
}