private void _loadSubItems(IDynamicTreeModel item, ItemCollection items)
{
if (items.Count == 1 && items[0] == null)
{
items.Clear();
}
List <IDynamicTreeModel> childs = item.GetChildsByParentId(item.GetId());
TreeViewItem treeItem;
foreach (var child in childs)
{
// vizuální položka ve stromě
treeItem = new TreeViewItem()
{
Header = child.GetTreeNodeHeader()
};
if (child.GetHashChilds())
{
treeItem.Items.Add(null);
}
treeItem.Expanded += this.onExpanded;
treeItem.PreviewMouseDoubleClick += this.onDoubleClick;
treeItem.DataContext = child; // databázová entity
treeItem.Tag = false; // nebyly načtené podpoložky
items.Add(treeItem);
}
}
private void onExpanded(object sender, RoutedEventArgs e)
{
TreeViewItem treeItem = sender as TreeViewItem;
if (!(bool)treeItem.Tag)
{
treeItem.Tag = true;
IDynamicTreeModel dataObject = treeItem.DataContext as IDynamicTreeModel;
this._loadSubItems(dataObject, treeItem.Items);
}
}
