public static void RecheckChilds(this ISelectable obj)
{
bool SomeSelected = false;
bool SomeNotSelected = false;
foreach (ISelectable child in obj.Childs())
{
if (child.IsSelectedInternal == true)
{
SomeSelected = true;
}
if (child.IsSelectedInternal == false)
{
SomeNotSelected = true;
}
}
if (SomeSelected)
{
if (SomeNotSelected)
{
obj.IsSelectedInternal = null;
}
else
{
obj.IsSelectedInternal = true;
}
}
else
{
obj.IsSelectedInternal = false;
}
obj.OnPropertyChanged("IsSelected");
}
//
// Must Call from IsSelected=>set
//
public static void OnChangeSelected(this ISelectable obj, bool?value)
{
foreach (ISelectable child in obj.Childs())
{
child.SetSelectedValue(value);
}
foreach (ISelectable parent in obj.Parents())
{
parent.RecheckChilds();
}
}