//##############################################################################################################
//-----------------------------------------------------------------------
public void FocusItem(DataItem item)
{
if (item == m_proxyRootItem)
{
m_focusedItemsPath.Clear();
RootItems.Clear();
foreach (var child in m_storedRootItems)
{
RootItems.Add(child);
}
}
else if (RootItems.Contains(item))
{
return;
}
else
{
item.Focus();
m_focusedItemsPath.Clear();
DataItem current = null;
if (item is GraphNodeItem)
{
current = (item as GraphNodeItem).LinkParents.FirstOrDefault();
}
else
{
current = item.Parent;
}
while (current != null)
{
if (current is CollectionChildItem || current is GraphNodeItem || !(current.Parent is CollectionChildItem))
{
m_focusedItemsPath.Add(current);
}
if (current is GraphNodeItem)
{
current = (current as GraphNodeItem).LinkParents.FirstOrDefault();
}
else
{
current = current.Parent;
}
}
m_focusedItemsPath.Remove(m_focusedItemsPath.Last());
m_focusedItemsPath.Add(m_proxyRootItem);
for (int i = 0; i < m_focusedItemsPath.Count; i++)
{
m_focusedItemsPath[i].ZIndex = i;
m_focusedItemsPath[i].FirstItem = Visibility.Visible;
}
for (int i = 0; i < m_focusedItemsPath.Count; i++)
{
m_focusedItemsPath.Move(m_focusedItemsPath.Count - 1, i);
}
m_focusedItemsPath[0].FirstItem = Visibility.Hidden;
RootItems.Clear();
RootItems.Add(item);
item.IsExpanded = true;
if (m_lastFocusedItem != null)
{
if (m_lastFocusedItem is CollectionItem)
{
CollectionItem collectionItem = m_lastFocusedItem as CollectionItem;
//collectionItem.IsFocused = false;
}
}
m_lastFocusedItem = item;
if (m_lastFocusedItem != null)
{
if (m_lastFocusedItem is CollectionItem)
{
CollectionItem collectionItem = m_lastFocusedItem as CollectionItem;
//collectionItem.IsFocused = true;
}
}
}
IsFocusing = m_focusedItemsPath.Count > 0;
RaisePropertyChangedEvent("RootItems");
}
