WordPress 4.1.1-scripts

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

diff --git a/wp-includes/class-wp-walker.php b/wp-includes/class-wp-walker.php
index 547defee81c7d4fcf3a959f7afc47e3114261350..25191641c0cfd9ae3eeaab8108b6470f16d805ee 100644 (file)
--- a/wp-includes/class-wp-walker.php
+++ b/wp-includes/class-wp-walker.php
@@ -16,28 +16,91 @@ class Walker {
         * What the class handles.
         *
         * @since 2.1.0
-        * @var string
         * @access public
+        * @var string
         */
-       var $tree_type;
+       public $tree_type;
 
        /**
         * DB fields to use.
         *
         * @since 2.1.0
-        * @var array
         * @access protected
+        * @var array
         */
-       var $db_fields;
+       protected $db_fields;
 
        /**
         * Max number of pages walked by the paged walker
         *
         * @since 2.7.0
+        * @access protected
         * @var int
+        */
+       protected $max_pages = 1;
+
+       /**
+        * Whether the current element has children or not.
+        *
+        * To be used in start_el().
+        *
+        * @since 4.0.0
         * @access protected
+        * @var bool
+        */
+       protected $has_children;
+
+       /**
+        * Make private properties readable for backwards compatibility.
+        *
+        * @since 4.0.0
+        * @access public
+        *
+        * @param string $name Property to get.
+        * @return mixed Property.
         */
-       var $max_pages = 1;
+       public function __get( $name ) {
+               return $this->$name;
+       }
+
+       /**
+        * Make private properties settable for backwards compatibility.
+        *
+        * @since 4.0.0
+        * @access public
+        *
+        * @param string $name  Property to set.
+        * @param mixed  $value Property value.
+        * @return mixed Newly-set property.
+        */
+       public function __set( $name, $value ) {
+               return $this->$name = $value;
+       }
+
+       /**
+        * Make private properties checkable for backwards compatibility.
+        *
+        * @since 4.0.0
+        * @access public
+        *
+        * @param string $name Property to check if set.
+        * @return bool Whether the property is set.
+        */
+       public function __isset( $name ) {
+               return isset( $this->$name );
+       }
+
+       /**
+        * Make private properties un-settable for backwards compatibility.
+        *
+        * @since 4.0.0
+        * @access public
+        *
+        * @param string $name Property to unset.
+        */
+       public function __unset( $name ) {
+               unset( $this->$name );
+       }
 
        /**
         * Starts the list before the elements are added.
@@ -52,7 +115,7 @@ class Walker {
         * @param int    $depth  Depth of the item.
         * @param array  $args   An array of additional arguments.
         */
-       function start_lvl( &$output, $depth = 0, $args = array() ) {}
+       public function start_lvl( &$output, $depth = 0, $args = array() ) {}
 
        /**
         * Ends the list of after the elements are added.
@@ -67,7 +130,7 @@ class Walker {
         * @param int    $depth  Depth of the item.
         * @param array  $args   An array of additional arguments.
         */
-       function end_lvl( &$output, $depth = 0, $args = array() ) {}
+       public function end_lvl( &$output, $depth = 0, $args = array() ) {}
 
        /**
         * Start the element output.
@@ -84,7 +147,7 @@ class Walker {
         * @param array  $args              An array of additional arguments.
         * @param int    $current_object_id ID of the current item.
         */
-       function start_el( &$output, $object, $depth = 0, $args = array(), $current_object_id = 0 ) {}
+       public function start_el( &$output, $object, $depth = 0, $args = array(), $current_object_id = 0 ) {}
 
        /**
         * Ends the element output, if needed.
@@ -99,7 +162,7 @@ class Walker {
         * @param int    $depth  Depth of the item.
         * @param array  $args   An array of additional arguments.
         */
-       function end_el( &$output, $object, $depth = 0, $args = array() ) {}
+       public function end_el( &$output, $object, $depth = 0, $args = array() ) {}
 
        /**
         * Traverse elements to create list from elements.
@@ -121,21 +184,23 @@ class Walker {
         * @param string $output            Passed by reference. Used to append additional content.
         * @return null Null on failure with no changes to parameters.
         */
-       function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
+       public function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
 
                if ( !$element )
                        return;
 
                $id_field = $this->db_fields['id'];
+               $id       = $element->$id_field;
 
                //display this element
-               if ( isset( $args[0] ) && is_array( $args[0] ) )
-                       $args[0]['has_children'] = ! empty( $children_elements[$element->$id_field] );
+               $this->has_children = ! empty( $children_elements[ $id ] );
+               if ( isset( $args[0] ) && is_array( $args[0] ) ) {
+                       $args[0]['has_children'] = $this->has_children; // Backwards compatibility.
+               }
+
                $cb_args = array_merge( array(&$output, $element, $depth), $args);
                call_user_func_array(array($this, 'start_el'), $cb_args);
 
-               $id = $element->$id_field;
-
                // descend only when the depth is right and there are childrens for this element
                if ( ($max_depth == 0 || $max_depth > $depth+1 ) && isset( $children_elements[$id]) ) {
 
@@ -178,7 +243,7 @@ class Walker {
         * @param int   $max_depth The maximum hierarchical depth.
         * @return string The hierarchical item output.
         */
-       function walk( $elements, $max_depth) {
+       public function walk( $elements, $max_depth) {
 
                $args = array_slice(func_get_args(), 2);
                $output = '';
@@ -189,7 +254,6 @@ class Walker {
                if (empty($elements)) //nothing to walk
                        return $output;
 
-               $id_field = $this->db_fields['id'];
                $parent_field = $this->db_fields['parent'];
 
                // flat display
@@ -267,7 +331,7 @@ class Walker {
         * @param int $page_num  The specific page number, beginning with 1.
         * @return string XHTML of the specified page of elements
         */
-       function paged_walk( $elements, $max_depth, $page_num, $per_page ) {
+       public function paged_walk( $elements, $max_depth, $page_num, $per_page ) {
 
                /* sanity check */
                if ( empty($elements) || $max_depth < -1 )
@@ -276,7 +340,6 @@ class Walker {
                $args = array_slice( func_get_args(), 4 );
                $output = '';
 
-               $id_field = $this->db_fields['id'];
                $parent_field = $this->db_fields['parent'];
 
                $count = -1;
@@ -375,7 +438,7 @@ class Walker {
                return $output;
        }
 
-       function get_number_of_root_elements( $elements ){
+       public function get_number_of_root_elements( $elements ){
 
                $num = 0;
                $parent_field = $this->db_fields['parent'];
@@ -388,7 +451,7 @@ class Walker {
        }
 
        // Unset all the children for a given top level element.
-       function unset_children( $e, &$children_elements ){
+       public function unset_children( $e, &$children_elements ){
 
                if ( !$e || !$children_elements )
                        return;