WP Menu Walker - How to know total depth from inside the start_lvl() method

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The start_lvl() method allows to know the current $depth parameter. But, I need to output different results at level 1 if the menu has x or y total levels.

I did a print_r() of the $args array, but there isn't anything I can use to achieve the desired result:

<!--Custom_Menu_Walker Object
(
    [tree_type] => Array
        (
            [0] => post_type
            [1] => taxonomy
            [2] => custom
        )

    [db_fields] => Array
        (
            [parent] => menu_item_parent
            [id] => db_id
        )

    [max_pages] => 1
    [has_children] => 1
)
-->

The most useful thing is to know if the current level has children. And even that isn't supposed to be used in the walker level:

From the docs: Whether the current element has children or not. To be used in start_el().

And even though it can be accessed from level, it doesn't allow me to know if any of the children have more children.

How do you suggest to approach this?

本文标签： WP Menu WalkerHow to know total depth from inside the startlvl() method