switched to a custom walker

inc/filter.class.php

@@ -18,7 +18,10 @@ public static function init()
 
 	public function setup_actions()
 	{
-		add_filter( "manage_taxonomies_for_{$this->post_type}_columns", array( $this, 'add_columns' ) );
+		add_filter(
+			 "manage_taxonomies_for_{$this->post_type}_columns"
+			,array( $this, 'add_columns' )
+		);
 	}
 
 	public function add_columns( $taxonomies )
@@ -31,22 +34,26 @@ public function add_columns( $taxonomies )
 
 	public function get_markup()
 	{
+		$walker = new WCMF_walker;
 		foreach ( $this->taxonomies as $tax )
 		{
-			$options = array(
+			wp_dropdown_categories( array(
 				 'taxonomy'        => $tax
+				,'hide_if_empty'   => true
 				,'show_option_all' => sprintf(
-					 '%s %s'
-					,__( 'View All', 'filterama' )
-					,get_taxonomy( $tax )->label
+					 get_taxonomy( $tax )->labels->all_items
 				 )
-				,'hide_empty'   => 0
-				,'hierarchical' => is_taxonomy_hierarchical( $tax )
-				,'show_count'   => 1
-				,'orderby'      => 'name'
-				,'selected'     => $tax
-			);
-			wp_dropdown_categories( $options );
+				,'hide_empty'      => true
+				,'hierarchical'    => is_taxonomy_hierarchical( $tax )
+				,'show_count'      => true
+				,'orderby'         => 'name'
+				,'selected'        => '0' !== get_query_var( $tax )
+					? get_query_var( $tax )
+					: false
+				,'name'            => $tax
+				,'id'              => $tax
+				,'walker'          => $walker
+			) );
 		}
 	}
 }

inc/walker_tax.class.php

@@ -0,0 +1,41 @@
+<?php
+defined( 'ABSPATH' ) OR exit;
+
+class WCMF_walker extends Walker_CategoryDropdown
+{
+	var $tree_type = 'category';
+	var $db_fields = array(
+		 'parent' => 'parent'
+		,'id'     => 'term_id'
+	);
+	public $tax_name;
+
+	/**
+	 * @see   Walker::start_el()
+	 * @param  string $output Passed by reference. Used to append additional content.
+	 * @param  object $term   Taxonomy term data object.
+	 * @param  int    $depth  Depth of category. Used for padding.
+	 * @param  array  $args   Uses 'selected' and 'show_count' keys, if they exist.
+	 * @param  int    $id
+	 * @return void
+	 */
+	function start_el( &$output, $term, $depth, $args, $id = 0 )
+	{
+		$pad = str_repeat( '&nbsp;', $depth * 3 );
+		$cat_name = apply_filters( 'list_cats', $term->name, $term );
+		$output .= sprintf(
+			 '<option class="level-%s" value="%s" %s>%s%s</option>'
+			,$depth
+			,$term->slug
+			,selected(
+				 $args['selected']
+				,$term->slug
+				,false
+			 )
+			,"{$pad}{$cat_name}"
+			,$args['show_count']
+				? "&nbsp;&nbsp;({$term->count})"
+				: ''
+		);
+	}
+}