public ReadOnlySelectionCollection(IReadOnlyIdentityCollection <T> identityCollection)
{
allItems = new ObservableCollection <ISelectionItem <T> >();
AllItems = new ListCollectionView(allItems);
CheckedItems = new ListCollectionView(allItems)
{
Filter = new Predicate <object>(IsCheckedFilter),
IsLiveFiltering = true
};
CheckedItems.LiveFilteringProperties.Add("IsChecked");
SelectedItems = new ListCollectionView(allItems)
{
Filter = new Predicate <object>(IsSelectedFilter),
IsLiveFiltering = true
};
SelectedItems.LiveFilteringProperties.Add("IsSelected");
collection = identityCollection ?? throw new ArgumentNullException(nameof(identityCollection) + " can not be null");
collection.CollectionChangeAdded += OnCollectionChangeAdded;
collection.CollectionChangeRemoved += OnCollectionChangeRemoved;
collection.CollectionChangeCleared += OnCollectionChangeCleared;
if (collection.Count > 0)
{
Add(collection);
}
}
public IdentitySelectionListViewModel(IReadOnlyIdentityCollection <T> identityCollection)
{
collection = identityCollection ?? throw new ArgumentNullException(nameof(identityCollection) + " can not be null");
collection.CollectionChangeAdded += OnCollectionChangeAdded;
collection.CollectionChangeRemoved += OnCollectionChangeRemoved;
collection.CollectionChangeCleared += OnCollectionChangeCleared;
viewModelDictionary = new Dictionary <IIdentifier, Tuple <T, TViewModel> >();
allItems = new ObservableCollection <IIdentitySelectionListItemViewModel <T> >();
AllItems = new ListCollectionView(allItems);
CheckedItems = new ListCollectionView(allItems)
{
Filter = new Predicate <object>(IsCheckedFilter),
IsLiveFiltering = true
};
CheckedItems.LiveFilteringProperties.Add("IsChecked");
SelectedItems = new ListCollectionView(allItems)
{
Filter = new Predicate <object>(IsSelectedFilter),
IsLiveFiltering = true
};
SelectedItems.LiveFilteringProperties.Add("IsSelected");
commandGroupsList = CreateCommandGroups();
CommandGroups = new ReadOnlyCollection <CommandGroupViewModel>(commandGroupsList);
CreateViewModels();
}
public override void Close()
{
collection.CollectionChangeAdded -= OnCollectionChangeAdded;
collection.CollectionChangeRemoved -= OnCollectionChangeRemoved;
collection.CollectionChangeCleared -= OnCollectionChangeCleared;
collection = null;
allItems.Clear();
allItems = null;
viewModelDictionary.Clear();
viewModelDictionary = null;
base.Close();
}
