WordPress 4.4

[autoinstalls/wordpress.git] / wp-includes / class-walker-category-dropdown.php

diff --git a/wp-includes/class-walker-category-dropdown.php b/wp-includes/class-walker-category-dropdown.php
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+<?php
+/**
+ * Taxonomy API: Walker_CategoryDropdown class
+ *
+ * @package WordPress
+ * @subpackage Template
+ * @since 4.4.0
+ */
+
+/**
+ * Core class used to create an HTML dropdown list of Categories.
+ *
+ * @since 2.1.0
+ *
+ * @see Walker
+ */
+class Walker_CategoryDropdown extends Walker {
+       /**
+        * @see Walker::$tree_type
+        * @since 2.1.0
+        * @var string
+        */
+       public $tree_type = 'category';
+
+       /**
+        * @see Walker::$db_fields
+        * @since 2.1.0
+        * @todo Decouple this
+        * @var array
+        */
+       public $db_fields = array ('parent' => 'parent', 'id' => 'term_id');
+
+       /**
+        * Start the element output.
+        *
+        * @see Walker::start_el()
+        * @since 2.1.0
+        *
+        * @param string $output   Passed by reference. Used to append additional content.
+        * @param object $category Category data object.
+        * @param int    $depth    Depth of category. Used for padding.
+        * @param array  $args     Uses 'selected', 'show_count', and 'value_field' keys, if they exist.
+        *                         See {@see wp_dropdown_categories()}.
+        */
+       public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
+               $pad = str_repeat('&nbsp;', $depth * 3);
+
+               /** This filter is documented in wp-includes/category-template.php */
+               $cat_name = apply_filters( 'list_cats', $category->name, $category );
+
+               if ( isset( $args['value_field'] ) && isset( $category->{$args['value_field']} ) ) {
+                       $value_field = $args['value_field'];
+               } else {
+                       $value_field = 'term_id';
+               }
+
+               $output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $category->{$value_field} ) . "\"";
+
+               // Type-juggling causes false matches, so we force everything to a string.
+               if ( (string) $category->{$value_field} === (string) $args['selected'] )
+                       $output .= ' selected="selected"';
+               $output .= '>';
+               $output .= $pad.$cat_name;
+               if ( $args['show_count'] )
+                       $output .= '&nbsp;&nbsp;('. number_format_i18n( $category->count ) .')';
+               $output .= "</option>\n";
+       }
+}