private static void OnIsCheckedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CheckTreeViewItem collapsed = d as CheckTreeViewItem;
if (collapsed != null)
{
collapsed.OnIsCheckCheckedChanged(e.OldValue, e.NewValue);
}
}
private void UpdateAllChildrenStatus(CheckTreeViewItem node)
{
var lstVisualChildren = GetFirstVisualChildren <CheckTreeViewItem>(node);
if (lstVisualChildren != null && lstVisualChildren.Count > 0)
{
foreach (var item in lstVisualChildren)
{
if (item.IsEnabled)
{
item.IsChecked = node.IsChecked;
UpdateAllChildrenStatus(item);
}
}
}
}
internal void NotifyPropertyChanged(object sender, string args)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(args));
}
if (sender is CheckTreeViewItem)
{
CheckTreeViewItem child = sender as CheckTreeViewItem;
if (args.CompareTo(_indeterminateState) == 0 && child.Parent is CheckTreeViewItem)
{
CheckTreeViewItem parent = child.Parent as CheckTreeViewItem;
SetCheckBoxState(parent, CheckBoxState.Indeterminate); //recursive call to update all its parents to indeterminate
}
}
}
void SetCheckBoxState(CheckTreeViewItem item, CheckBoxState state)
{
switch (state)
{
case CheckBoxState.IsChecked:
item.IsChecked = true;
// item.NotifyPropertyChanged(item, _isCheckedState);
break;
case CheckBoxState.Indeterminate:
item.IsChecked = null;
//item.NotifyPropertyChanged(item, _indeterminateState);
break;
case CheckBoxState.Unchecked:
item.IsChecked = false;
//item.NotifyPropertyChanged(item, _uncheckedState);
break;
}
}
