bool DoRememberExpandedNodes(wxTreeCtrl* tree, const wxTreeItemId& parent, wxArrayString& nodePaths, wxString& path)
{
// remember expanded tree nodes of this tree
if (!tree || !parent.IsOk())
return false;
wxString originalPath = path;
bool found = false;
wxTreeItemIdValue cookie = nullptr;
wxTreeItemId child = tree->GetFirstChild(parent, cookie);
while (child.IsOk())
{
if (tree->ItemHasChildren(child) && tree->IsExpanded(child))
{
found = true;
path << _T("/") << tree->GetItemText(child);
DoRememberExpandedNodes(tree, child, nodePaths, path);
nodePaths.Add(path);
path = originalPath;
}
child = tree->GetNextChild(parent, cookie);
}
return found;
}
void SaveTreeState(wxTreeCtrl* tree, const wxTreeItemId& parent, wxArrayString& nodePaths)
{
nodePaths.Clear();
if (!parent.IsOk() || !tree || !tree->ItemHasChildren(parent) || !tree->IsExpanded(parent))
return;
wxString tmp;
if (!DoRememberExpandedNodes(tree, parent, nodePaths, tmp))
nodePaths.Add(tmp); // just the tree root
}
