public void ChangeParent(ProjectItem projectItem, ProjectItem oldParent)
{
if (!m_treeView.IsDropInProgress && m_treeView.GetItemContainerData(projectItem) != null)
{
m_treeView.ChangeParent(projectItem.Parent, projectItem);
}
VirtualizingTreeViewItem tvOldParent = m_treeView.GetTreeViewItem(oldParent);
if (tvOldParent != null)
{
tvOldParent.CanExpand = oldParent.Children != null && oldParent.Children.Any(c => c.IsFolder);
}
VirtualizingTreeViewItem tvNewParent = m_treeView.GetTreeViewItem(projectItem.Parent);
if (tvNewParent != null)
{
tvNewParent.CanExpand = true;
}
}
protected virtual void OnParentChanged(ExposeToEditor obj, ExposeToEditor oldParent, ExposeToEditor newParent)
{
if (Editor.IsPlaymodeStateChanging)
{
return;
}
bool isNewParentExpanded = true;
bool isOldParentExpanded = true;
bool isLastChild = false;
if (newParent != null)
{
isNewParentExpanded = m_treeView.IsExpanded(newParent);
}
if (oldParent != null)
{
TreeViewItemContainerData itemContainerData = (TreeViewItemContainerData)m_treeView.GetItemContainerData(oldParent);
isLastChild = !oldParent.HasChildren(); //!itemContainerData.HasChildren(m_treeView);
isOldParentExpanded = m_treeView.IsExpanded(oldParent);
}
if (isNewParentExpanded)
{
m_treeView.ChangeParent(newParent, obj);
if (!isOldParentExpanded)
{
if (isLastChild)
{
VirtualizingTreeViewItem oldParentContainer = m_treeView.GetTreeViewItem(oldParent);
if (oldParentContainer)
{
oldParentContainer.CanExpand = false;
}
}
}
}
else
{
if (newParent != null)
{
VirtualizingTreeViewItem newParentTreeViewItem = m_treeView.GetTreeViewItem(newParent);
if (newParentTreeViewItem != null)
{
newParentTreeViewItem.CanExpand = true;
}
}
m_treeView.RemoveChild(oldParent, obj);
}
}