public TreeViewViewModel(TreeViewItemViewModel treeViewItemViewModelViewModel, Func <string, IObservable <IList <Predicate <object> > > > searchFunc = null)
{
_searchFunc = searchFunc;
ClearSearchCommand = new DelegateCommand(ClearSearch, CanSearch);
_treeViewItemViewModel = treeViewItemViewModelViewModel;
this.ToObservable(x => x.SearchText)
.Throttle(TimeSpan.FromMilliseconds(1000), DispatcherScheduler.Current)
.Where(_ => CanSearch())
.Subscribe(_ => Search());
}
public TreeViewItemViewModel(TreeViewItemViewModel parent, object value, Func <object, IEnumerable <LoaderResult> > lazyLoader, Func <TreeViewItemViewModel, object, Func <object, IEnumerable <LoaderResult> >, TreeViewItemViewModel> itemFactory)
{
Parent = parent;
Value = value;
_lazyLoader = lazyLoader;
_itemFactory = itemFactory;
_items = new ObservableCollection <TreeViewItemViewModel>();
if (lazyLoader != null)
{
_items.Add(DummyItem);
}
}
private TreeViewItemViewModel InitialiseItem(TreeViewItemViewModel item)
{
if (IsChecked.HasValue)
{
item._isChecked = IsChecked;
}
if (IsVisible.HasValue)
{
item._isVisible = IsVisible;
}
item.Parent = this;
return(item);
}
private void UpdateVisibleSiblingsAndParent(TreeViewItemViewModel child)
{
UpdateSiblingsAndParent(child, x => x._isVisible, (x, y) => x._isVisible = y, _isVisible, x => x.OnPropertyChanged(() => IsVisible), x => { });
}
private void UpdateCheckedSiblingsAndParent(TreeViewItemViewModel sender, TreeViewItemViewModel child)
{
UpdateSiblingsAndParent(child, x => x._isChecked, (x, y) => x._isChecked = y, _isChecked, x => x.OnPropertyChanged(() => IsChecked), x => x.RaiseCheckedChanged(sender));
}