private static ITreeViewItemModel GetFind(List <ITreeViewItemModel> currentItems, string hierarchy)
{
ITreeViewItemModel selectedItem = null;
if (hierarchy != null && hierarchy.Length > 0)
{
for (int i = 0; i < currentItems.Count; i++)
{
if (currentItems[i].SelectedValuePath == hierarchy)
{
selectedItem = currentItems[i];
break;
}
selectedItem = GetFind(currentItems[i].GetChildren().ToList(), hierarchy);
if (selectedItem != null)
{
break;
}
}
}
return(selectedItem);
}
public TreeViewItemViewModelBase(string value, ITreeViewItemModel parent, IEnumerable <ITreeViewItemModel> children = null)
{
Value = value;
Parent = parent;
Children = new ObservableCollection <ITreeViewItemModel>(children ?? Enumerable.Empty <ITreeViewItemModel>());
CheckCommand = ReactiveCommand.Create(SetChecked);
this.WhenAnyValue(x => x.IsChecked).Subscribe(x => SpecificLogic(x));
}
/// <summary>
/// Searches the items of the hierarchy inside the items source and selects the last found item
/// </summary>
private static ITreeViewItemModel SelectItem(IEnumerable <ITreeViewItemModel> items, IEnumerable <string> selectedHierarchy)
{
if (items == null || selectedHierarchy == null || !items.Any() || !selectedHierarchy.Any())
{
return(null);
}
var hierarchy = selectedHierarchy.ToList();
var currentItems = items;
ITreeViewItemModel selectedItem = null;
for (int i = 0; i < hierarchy.Count; i++)
{
// get next item in the hierarchy from the collection of child items
var currentItem = currentItems.FirstOrDefault(ci => ci.SelectedValuePath == hierarchy[i]);
if (currentItem == null)
{
break;
}
selectedItem = currentItem;
// rewrite the current collection of child items
currentItems = selectedItem.GetChildren();
if (currentItems == null)
{
break;
}
// the intermediate items will be expanded
if (i != hierarchy.Count - 1)
{
selectedItem.IsExpanded = true;
}
}
if (selectedItem != null)
{
selectedItem.IsSelected = true;
}
return(selectedItem);
}
