public IdentityTreeViewModel(IIdentityTreeManager <T> identityTreeManager)
{
treeManager = identityTreeManager ?? throw new ArgumentNullException(nameof(identityTreeManager) + " can not be null");
modelDictionary = new Dictionary <string, T>();
viewModelDictionary = new Dictionary <string, IIdentityTreeItemViewModel <T> >();
allNodes = new ObservableCollection <IIdentityTreeItemViewModel <T> >();
AllNodes = new ListCollectionView(allNodes)
{
CustomSort = new TreeItemNameComparer <T>()
};
RootNodes = new ListCollectionView(allNodes)
{
Filter = new Predicate <object>(RootNodeFilter),
IsLiveFiltering = true,
CustomSort = new TreeItemNameComparer <T>()
};
RootNodes.LiveFilteringProperties.Add(nameof(IIdentityTreeItemViewModel <T> .Parent));
CheckedNodes = new ListCollectionView(allNodes)
{
Filter = new Predicate <object>(CheckedNodeFilter),
IsLiveFiltering = true
};
CheckedNodes.LiveFilteringProperties.Add(nameof(IIdentityTreeItemViewModel <T> .IsChecked));
ExpandedNodes = new ListCollectionView(allNodes)
{
Filter = new Predicate <object>(ExpandedNodeFilter),
IsLiveFiltering = true
};
ExpandedNodes.LiveFilteringProperties.Add(nameof(IIdentityTreeItemViewModel <T> .IsExpanded));
SelectedNodes = new ListCollectionView(allNodes)
{
Filter = new Predicate <object>(SelectedNodeFilter),
IsLiveFiltering = true
};
SelectedNodes.LiveFilteringProperties.Add(nameof(IIdentityTreeItemViewModel <T> .IsSelected));
CreateRootViewModels();
treeManager.AllItems.CollectionChangeAdded += OnAllItemsCollectionChangeAdded;
treeManager.AllItems.CollectionChangeRemoved += OnAllItemsCollectionChangeRemoved;
}
public override void Close()
{
foreach (IIdentityTreeItemViewModel <T> vm in viewModelDictionary.Values)
{
vm.Close();
}
RootNodes = null;
CheckedNodes = null;
ExpandedNodes = null;
SelectedNodes = null;
modelDictionary.Clear();
modelDictionary = null;
viewModelDictionary.Clear();
viewModelDictionary = null;
allNodes.Clear();
allNodes = null;
treeManager.AllItems.CollectionChangeAdded -= OnAllItemsCollectionChangeAdded;
treeManager.AllItems.CollectionChangeRemoved -= OnAllItemsCollectionChangeRemoved;
treeManager = null;
base.Close();
}
