protected override DependencyObject GetContainerForItemOverride()
{
TViewItem checkBoxTreeViewItem = new TViewItem();
OnNewContainer(checkBoxTreeViewItem);
return(checkBoxTreeViewItem);
}
internal void OnNewContainer(TViewItem newContainer)
{
newContainer.Checked -= Checked_EventHandler;
newContainer.Unchecked -= Unchecked_EventHandler;
newContainer.Checked += Checked_EventHandler;
newContainer.Unchecked += Unchecked_EventHandler;
}
protected override DependencyObject GetContainerForItemOverride()
{
PropertyInfo parentTreeViewPi = typeof(TViewItem).GetProperty("ParentTreeView", BindingFlags.Instance | BindingFlags.NonPublic);
UltimateTreeView parentCheckBoxTreeView = parentTreeViewPi.GetValue(this, null) as UltimateTreeView;
TViewItem checkBoxTreeViewItem = new TViewItem();
parentCheckBoxTreeView.OnNewContainer(checkBoxTreeViewItem);
return(checkBoxTreeViewItem);
}
private void CheckBoxTreeViewItem_Unchecked(object sender, RoutedEventArgs e)
{
TViewItem checkBoxTreeViewItem = sender as TViewItem;
Action action = () =>
{
CheckedItems.Remove((TreeViewItemViewModel)checkBoxTreeViewItem.Header);
};
this.Dispatcher.BeginInvoke(action, DispatcherPriority.ContextIdle);
}
private static Collection <TViewItem> GetAllItemContainers(ItemsControl itemsControl)
{
Collection <TViewItem> allItems = new Collection <TViewItem>();
for (int i = 0; i < itemsControl.Items.Count; i++)
{
// try to get the item Container
TViewItem childItemContainer = itemsControl.ItemContainerGenerator.ContainerFromIndex(i) as TViewItem;
// the item container maybe null if it is still not generated from the runtime
if (childItemContainer != null)
{
allItems.Add(childItemContainer);
}
}
return(allItems);
}
private static ItemsControl GetSelectedTreeViewItemParent(TViewItem item)
{
DependencyObject parent = VisualTreeHelper.GetParent(item);
while (!(parent is TViewItem) && !(parent is UltimateTreeView))
{
parent = VisualTreeHelper.GetParent(parent);
}
if (parent is UltimateTreeView)
{
return(null);
}
return(parent as ItemsControl);
}
private static void CheckedPropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
TViewItem checkBoxTreeViewItem = (TViewItem)source;
if (checkBoxTreeViewItem.IsChecked == true)
{
checkBoxTreeViewItem.OnChecked(new RoutedEventArgs(CheckedEvent, checkBoxTreeViewItem));
}
else
if (checkBoxTreeViewItem.IsChecked == false)
{
checkBoxTreeViewItem.OnUnchecked(new RoutedEventArgs(UncheckedEvent, checkBoxTreeViewItem));
}
else
{
checkBoxTreeViewItem.OnIndeterminateChecked(new RoutedEventArgs(IndeterminateCheckedEvent, checkBoxTreeViewItem));
}
SetParentCheckedState((TreeViewItemViewModel)checkBoxTreeViewItem.Header);
SetChildrenCheckedState((TreeViewItemViewModel)checkBoxTreeViewItem.Header);
}
private static void CheckBoxVisibilityPropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
TViewItem checkBoxTreeViewItem = (TViewItem)source;
checkBoxTreeViewItem.CheckBoxVisibility = (Visibility)(e.NewValue);
}