<?php

/* Forked version of wp_dropdown_categories() */
function mfields_dropdown_taxonomy_terms( $args = '' ) {
    $defaults = array(
        'show_option_all' => '', 'show_option_none' => '',
        'orderby' => 'id', 'order' => 'ASC',
        'show_last_update' => 0, 'show_count' => 0,
        'hide_empty' => 1, 'child_of' => 0,
        'exclude' => '', 'echo' => 1,
        'selected' => 0, 'hierarchical' => 0,
        'name' => 'cat', 'class' => 'postform',
        'depth' => 0, 'tab_index' => 0
    );

    $defaults['selected'] = ( is_category() ) ? get_query_var( 'cat' ) : 0;

    $r = wp_parse_args( $args, $defaults );

    if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) {
        $r['pad_counts'] = true;
    }

    $r['include_last_update_time'] = $r['show_last_update'];
    extract( $r );

    $tab_index_attribute = '';
    if ( (int) $tab_index > 0 )
        $tab_index_attribute = " tabindex=\"$tab_index\"";

    $categories = get_categories( $r );
    $name = esc_attr($name);
    $class = esc_attr($class);

    $id = ( !empty( $id ) ) ? esc_attr( $id ) : $name;

    $output = '';
    if ( ! empty( $categories ) ) {
        $output = "<select name='$name' id='$id' class='$class' $tab_index_attribute>\n";

        if ( $show_option_all ) {
            $show_option_all = apply_filters( 'list_cats', $show_option_all );
            $selected = ( '0' === strval($r['selected']) ) ? " selected='selected'" : '';
            $output .= "\t<option value='0'$selected>$show_option_all</option>\n";
        }

        if ( $show_option_none ) {
            $show_option_none = apply_filters( 'list_cats', $show_option_none );
            $selected = ( '-1' === strval($r['selected']) ) ? " selected='selected'" : '';
            $output .= "\t<option value='-1'$selected>$show_option_none</option>\n";
        }

        if ( $hierarchical )
            $depth = $r['depth'];  // Walk the full depth.
        else
            $depth = -1; // Flat.

        $output .= mfields_walk_taxonomy_dropdown_tree( $categories, $depth, $r );
        $output .= "</select>\n";
    }

    $output = apply_filters( 'wp_dropdown_cats', $output );

    if ( $echo )
        echo $output;

    return $output;
}
/* Forked version of walk_category_dropdown_tree() */
function mfields_walk_taxonomy_dropdown_tree() {
    $args = func_get_args();
    // the user's options are the third parameter
    if ( empty( $args[2]['walker'] ) || !is_a( $args[2]['walker'], 'Walker' ) )
        $walker = new mfields_walker_taxonomy_dropdown;
    else
        $walker = $args[2]['walker'];

    return call_user_func_array( array( &$walker, 'walk' ), $args );
}
/* Forked version of Walker_CategoryDropdown */
class mfields_walker_taxonomy_dropdown extends Walker {
    var $tree_type = 'category';
    var $db_fields = array ('parent' => 'parent', 'id' => 'term_id');

    function start_el( &$output, $category, $depth, $args ) {
        $pad = str_repeat( '&nbsp;', $depth * 3 );
        $cat_name = apply_filters( 'list_cats', $category->name, $category );

        if( $category->taxonomy === 'category' )
            $value = esc_attr( $category->term_id );
        else
            $value = esc_attr( $category->slug );

        $output .= "\t<option class=\"level-$depth\" value=\"" . $value . "\"";

        if ( $category->taxonomy === 'category' ) {
            if ( $category->term_id == $args['selected'] )
                $output .= ' selected="selected"';
        }
        else {
            if ( $category->slug == $args['selected'] )
                $output .= ' selected="selected"';
        }

        $output .= '>';
        $output .= $pad . $cat_name;
        if ( $args['show_count'] )
        $output .= '&nbsp;&nbsp;('. $category->count .')';
        if ( $args['show_last_update'] ) {
            $format = 'Y-m-d';
            $output .= '&nbsp;&nbsp;' . gmdate( $format, $category->last_update_timestamp );
        }
        $output .= "</option>\n";
    }
}

?>