Method ExpandSubdir

Src/DirView.cpp:1362–1397

* @brief Expand subfolder * @param [in] sel Folder item index in listview. */

 * @param [in] sel Folder item index in listview.
 */
void CDirView::ExpandSubdir(int sel, bool bRecursive)
{
	DIFFITEM& dip = GetDiffItem(sel);
	if (!m_bTreeMode || (dip.customFlags & ViewCustomFlags::EXPANDED) || !dip.HasChildren())
		return;

	m_pList->SetRedraw(FALSE);	// Turn off updating (better performance)

	size_t oldItemCount = m_listViewItems.size();

	CDiffContext &ctxt = GetDiffContext();
	dip.customFlags |= ViewCustomFlags::EXPANDED;
	if (bRecursive)
		ExpandSubdirs(ctxt, dip);

	DIFFITEM *diffpos = ctxt.GetFirstChildDiffPosition(GetItemKey(sel));
	UINT indext = sel + 1;
	int alldiffs;
	RedisplayChildren(diffpos, dip.GetDepth() + 1, indext, alldiffs);

	SortColumnsAppropriately();

	if (m_pList->GetNextItem(sel, LVNI_SELECTED) != -1)
	{
		LVITEM lvi {0, sel + 1};
		for (size_t i = 0; i < m_listViewItems.size() - oldItemCount; i++)
			m_pList->InsertItem(&lvi);
	}
	else
	{
		m_pList->SetItemCountEx(static_cast<int>(m_listViewItems.size()), LVSICF_NOSCROLL);
	}

	m_pList->SetRedraw(TRUE);	// Turn updating back on
	m_pList->Invalidate();
}

/**
 * @brief Open parent folder if possible.