Solved detect whether collapsed node has selected child node

[user4592357]

when a node in my tree view is collapsed, i emit a signal:

void Tree::onNodeCollapsed(const QModelIndex &index)
{
	// get the collapsed node
	auto pNode = static_cast<TreeNode *>(index.internalPointer());

	// execute collapse routine
	pNode->onCollapsed();

	// update the model
	getTreeModel()->updateModel();

	// inform about node collapse in tree view
	emit nodeCollapsed(pNode);
}

later, in a slot:

void SomeObject::onTreeNodeCollapsed(TreeNode *pNode)
{
    if (pNode has a selected child)
    {
        // 
    }
    else
    {
        //
    }
}

how can i determine this?

[mrjj]

Hi
Seems you are using a custom model so just guessing/asking.
Well cant u ask the selected index,
what its parent is and then compare
the parent TreeNode with the pNode ?

[user4592357]

@mrjj
ah right. an then do this recursively for the outer levels

[mrjj]

@user4592357
Hi
Yes if those are parentless.
If you dont have millions of items in the model, should be fine.

[user4592357]

@mrjj
my bad, i'm noticing only now. my question was not about selected node, but rather a collapsed one. how can i know whether the collapsed node has selected child nodes?

[mrjj]

@user4592357
Well if the current selected index's parents is the
collapsed node then it has. else not.