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