Method get_prev

scene/gui/tree.cpp:989–1006

}

TreeItem *TreeItem::get_prev() {
	if (prev) {
		return prev;
	}

	if (!parent || parent->first_child == this) {
		return nullptr;
	}
	// This is an edge case.
	TreeItem *l_prev = parent->first_child;
	while (l_prev && l_prev->next != this) {
		l_prev = l_prev->next;
	}

	prev = l_prev;

	return prev;
}

TreeItem *TreeItem::get_parent() const {
	return parent;