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1 <?php |
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2 /** |
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3 * Navigation Menu template functions |
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4 * |
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5 * @package WordPress |
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6 * @subpackage Nav_Menus |
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7 * @since 3.0.0 |
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8 */ |
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9 |
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10 /** |
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11 * Create HTML list of nav menu items. |
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12 * |
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13 * @package WordPress |
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14 * @since 3.0.0 |
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15 * @uses Walker |
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16 */ |
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17 class Walker_Nav_Menu extends Walker { |
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18 /** |
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19 * What the class handles. |
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20 * |
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21 * @see Walker::$tree_type |
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22 * @since 3.0.0 |
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23 * @var string |
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24 */ |
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25 var $tree_type = array( 'post_type', 'taxonomy', 'custom' ); |
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26 |
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27 /** |
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28 * Database fields to use. |
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29 * |
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30 * @see Walker::$db_fields |
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31 * @since 3.0.0 |
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32 * @todo Decouple this. |
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33 * @var array |
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34 */ |
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35 var $db_fields = array( 'parent' => 'menu_item_parent', 'id' => 'db_id' ); |
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36 |
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37 /** |
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38 * Starts the list before the elements are added. |
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39 * |
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40 * @see Walker::start_lvl() |
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41 * |
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42 * @since 3.0.0 |
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43 * |
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44 * @param string $output Passed by reference. Used to append additional content. |
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45 * @param int $depth Depth of menu item. Used for padding. |
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46 * @param array $args An array of arguments. @see wp_nav_menu() |
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47 */ |
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48 function start_lvl( &$output, $depth = 0, $args = array() ) { |
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49 $indent = str_repeat("\t", $depth); |
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50 $output .= "\n$indent<ul class=\"sub-menu\">\n"; |
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51 } |
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52 |
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53 /** |
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54 * Ends the list of after the elements are added. |
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55 * |
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56 * @see Walker::end_lvl() |
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57 * |
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58 * @since 3.0.0 |
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59 * |
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60 * @param string $output Passed by reference. Used to append additional content. |
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61 * @param int $depth Depth of menu item. Used for padding. |
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62 * @param array $args An array of arguments. @see wp_nav_menu() |
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63 */ |
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64 function end_lvl( &$output, $depth = 0, $args = array() ) { |
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65 $indent = str_repeat("\t", $depth); |
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66 $output .= "$indent</ul>\n"; |
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67 } |
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68 |
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69 /** |
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70 * Start the element output. |
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71 * |
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72 * @see Walker::start_el() |
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73 * |
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74 * @since 3.0.0 |
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75 * |
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76 * @param string $output Passed by reference. Used to append additional content. |
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77 * @param object $item Menu item data object. |
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78 * @param int $depth Depth of menu item. Used for padding. |
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79 * @param array $args An array of arguments. @see wp_nav_menu() |
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80 * @param int $id Current item ID. |
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81 */ |
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82 function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) { |
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83 $indent = ( $depth ) ? str_repeat( "\t", $depth ) : ''; |
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84 |
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85 $class_names = $value = ''; |
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86 |
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87 $classes = empty( $item->classes ) ? array() : (array) $item->classes; |
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88 $classes[] = 'menu-item-' . $item->ID; |
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89 |
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90 /** |
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91 * Filter the CSS class(es) applied to a menu item's <li>. |
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92 * |
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93 * @since 3.0.0 |
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94 * |
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95 * @param array $classes The CSS classes that are applied to the menu item's <li>. |
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96 * @param object $item The current menu item. |
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97 * @param array $args An array of arguments. @see wp_nav_menu() |
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98 */ |
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99 $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) ); |
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100 $class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : ''; |
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101 |
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102 /** |
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103 * Filter the ID applied to a menu item's <li>. |
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104 * |
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105 * @since 3.0.1 |
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106 * |
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107 * @param string The ID that is applied to the menu item's <li>. |
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108 * @param object $item The current menu item. |
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109 * @param array $args An array of arguments. @see wp_nav_menu() |
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110 */ |
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111 $id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args ); |
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112 $id = $id ? ' id="' . esc_attr( $id ) . '"' : ''; |
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113 |
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114 $output .= $indent . '<li' . $id . $value . $class_names .'>'; |
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115 |
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116 $atts = array(); |
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117 $atts['title'] = ! empty( $item->attr_title ) ? $item->attr_title : ''; |
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118 $atts['target'] = ! empty( $item->target ) ? $item->target : ''; |
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119 $atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : ''; |
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120 $atts['href'] = ! empty( $item->url ) ? $item->url : ''; |
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121 |
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122 /** |
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123 * Filter the HTML attributes applied to a menu item's <a>. |
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124 * |
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125 * @since 3.6.0 |
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126 * |
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127 * @param array $atts { |
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128 * The HTML attributes applied to the menu item's <a>, empty strings are ignored. |
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129 * |
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130 * @type string $title The title attribute. |
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131 * @type string $target The target attribute. |
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132 * @type string $rel The rel attribute. |
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133 * @type string $href The href attribute. |
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134 * } |
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135 * @param object $item The current menu item. |
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136 * @param array $args An array of arguments. @see wp_nav_menu() |
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137 */ |
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138 $atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args ); |
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139 |
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140 $attributes = ''; |
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141 foreach ( $atts as $attr => $value ) { |
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142 if ( ! empty( $value ) ) { |
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143 $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value ); |
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144 $attributes .= ' ' . $attr . '="' . $value . '"'; |
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145 } |
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146 } |
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147 |
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148 $item_output = $args->before; |
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149 $item_output .= '<a'. $attributes .'>'; |
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150 /** This filter is documented in wp-includes/post-template.php */ |
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151 $item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after; |
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152 $item_output .= '</a>'; |
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153 $item_output .= $args->after; |
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154 |
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155 /** |
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156 * Filter a menu item's starting output. |
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157 * |
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158 * The menu item's starting output only includes $args->before, the opening <a>, |
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159 * the menu item's title, the closing </a>, and $args->after. Currently, there is |
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160 * no filter for modifying the opening and closing <li> for a menu item. |
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161 * |
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162 * @since 3.0.0 |
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163 * |
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164 * @param string $item_output The menu item's starting HTML output. |
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165 * @param object $item Menu item data object. |
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166 * @param int $depth Depth of menu item. Used for padding. |
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167 * @param array $args An array of arguments. @see wp_nav_menu() |
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168 */ |
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169 $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args ); |
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170 } |
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171 |
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172 /** |
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173 * Ends the element output, if needed. |
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174 * |
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175 * @see Walker::end_el() |
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176 * |
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177 * @since 3.0.0 |
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178 * |
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179 * @param string $output Passed by reference. Used to append additional content. |
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180 * @param object $item Page data object. Not used. |
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181 * @param int $depth Depth of page. Not Used. |
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182 * @param array $args An array of arguments. @see wp_nav_menu() |
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183 */ |
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184 function end_el( &$output, $item, $depth = 0, $args = array() ) { |
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185 $output .= "</li>\n"; |
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186 } |
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187 |
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188 } // Walker_Nav_Menu |
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189 |
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190 /** |
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191 * Displays a navigation menu. |
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192 * |
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193 * Optional $args contents: |
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194 * |
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195 * menu - The menu that is desired. Accepts (matching in order) id, slug, name. Defaults to blank. |
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196 * menu_class - CSS class to use for the ul element which forms the menu. Defaults to 'menu'. |
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197 * menu_id - The ID that is applied to the ul element which forms the menu. Defaults to the menu slug, incremented. |
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198 * container - Whether to wrap the ul, and what to wrap it with. Defaults to 'div'. |
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199 * container_class - the class that is applied to the container. Defaults to 'menu-{menu slug}-container'. |
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200 * container_id - The ID that is applied to the container. Defaults to blank. |
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201 * fallback_cb - If the menu doesn't exists, a callback function will fire. Defaults to 'wp_page_menu'. Set to false for no fallback. |
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202 * before - Text before the link text. |
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203 * after - Text after the link text. |
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204 * link_before - Text before the link. |
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205 * link_after - Text after the link. |
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206 * echo - Whether to echo the menu or return it. Defaults to echo. |
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207 * depth - how many levels of the hierarchy are to be included. 0 means all. Defaults to 0. |
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208 * walker - allows a custom walker to be specified. |
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209 * theme_location - the location in the theme to be used. Must be registered with register_nav_menu() in order to be selectable by the user. |
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210 * items_wrap - How the list items should be wrapped. Defaults to a ul with an id and class. Uses printf() format with numbered placeholders. |
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211 * |
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212 * @since 3.0.0 |
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213 * |
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214 * @param array $args Arguments |
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215 */ |
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216 function wp_nav_menu( $args = array() ) { |
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217 static $menu_id_slugs = array(); |
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218 |
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219 $defaults = array( 'menu' => '', 'container' => 'div', 'container_class' => '', 'container_id' => '', 'menu_class' => 'menu', 'menu_id' => '', |
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220 'echo' => true, 'fallback_cb' => 'wp_page_menu', 'before' => '', 'after' => '', 'link_before' => '', 'link_after' => '', 'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>', |
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221 'depth' => 0, 'walker' => '', 'theme_location' => '' ); |
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222 |
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223 $args = wp_parse_args( $args, $defaults ); |
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224 /** |
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225 * Filter the arguments used to display a navigation menu. |
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226 * |
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227 * @since 3.0.0 |
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228 * |
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229 * @param array $args Arguments from {@see wp_nav_menu()}. |
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230 */ |
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231 $args = apply_filters( 'wp_nav_menu_args', $args ); |
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232 $args = (object) $args; |
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233 |
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234 // Get the nav menu based on the requested menu |
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235 $menu = wp_get_nav_menu_object( $args->menu ); |
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236 |
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237 // Get the nav menu based on the theme_location |
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238 if ( ! $menu && $args->theme_location && ( $locations = get_nav_menu_locations() ) && isset( $locations[ $args->theme_location ] ) ) |
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239 $menu = wp_get_nav_menu_object( $locations[ $args->theme_location ] ); |
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240 |
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241 // get the first menu that has items if we still can't find a menu |
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242 if ( ! $menu && !$args->theme_location ) { |
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243 $menus = wp_get_nav_menus(); |
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244 foreach ( $menus as $menu_maybe ) { |
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245 if ( $menu_items = wp_get_nav_menu_items( $menu_maybe->term_id, array( 'update_post_term_cache' => false ) ) ) { |
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246 $menu = $menu_maybe; |
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247 break; |
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248 } |
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249 } |
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250 } |
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251 |
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252 // If the menu exists, get its items. |
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253 if ( $menu && ! is_wp_error($menu) && !isset($menu_items) ) |
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254 $menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'update_post_term_cache' => false ) ); |
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255 |
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256 /* |
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257 * If no menu was found: |
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258 * - Fall back (if one was specified), or bail. |
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259 * |
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260 * If no menu items were found: |
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261 * - Fall back, but only if no theme location was specified. |
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262 * - Otherwise, bail. |
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263 */ |
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264 if ( ( !$menu || is_wp_error($menu) || ( isset($menu_items) && empty($menu_items) && !$args->theme_location ) ) |
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265 && $args->fallback_cb && is_callable( $args->fallback_cb ) ) |
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266 return call_user_func( $args->fallback_cb, (array) $args ); |
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267 |
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268 if ( ! $menu || is_wp_error( $menu ) ) |
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269 return false; |
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270 |
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271 $nav_menu = $items = ''; |
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272 |
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273 $show_container = false; |
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274 if ( $args->container ) { |
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275 /** |
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276 * Filter the list of HTML tags that are valid for use as menu containers. |
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277 * |
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278 * @since 3.0.0 |
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279 * |
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280 * @param array The acceptable HTML tags for use as menu containers, defaults as 'div' and 'nav'. |
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281 */ |
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282 $allowed_tags = apply_filters( 'wp_nav_menu_container_allowedtags', array( 'div', 'nav' ) ); |
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283 if ( in_array( $args->container, $allowed_tags ) ) { |
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284 $show_container = true; |
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285 $class = $args->container_class ? ' class="' . esc_attr( $args->container_class ) . '"' : ' class="menu-'. $menu->slug .'-container"'; |
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286 $id = $args->container_id ? ' id="' . esc_attr( $args->container_id ) . '"' : ''; |
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287 $nav_menu .= '<'. $args->container . $id . $class . '>'; |
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288 } |
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289 } |
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290 |
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291 // Set up the $menu_item variables |
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292 _wp_menu_item_classes_by_context( $menu_items ); |
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293 |
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294 $sorted_menu_items = $menu_items_with_children = array(); |
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295 foreach ( (array) $menu_items as $menu_item ) { |
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296 $sorted_menu_items[ $menu_item->menu_order ] = $menu_item; |
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297 if ( $menu_item->menu_item_parent ) |
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298 $menu_items_with_children[ $menu_item->menu_item_parent ] = true; |
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299 } |
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300 |
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301 // Add the menu-item-has-children class where applicable |
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302 if ( $menu_items_with_children ) { |
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303 foreach ( $sorted_menu_items as &$menu_item ) { |
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304 if ( isset( $menu_items_with_children[ $menu_item->ID ] ) ) |
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305 $menu_item->classes[] = 'menu-item-has-children'; |
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306 } |
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307 } |
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308 |
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309 unset( $menu_items, $menu_item ); |
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310 |
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311 /** |
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312 * Filter the sorted list of menu item objects before generating the menu's HTML. |
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313 * |
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314 * @since 3.1.0 |
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315 * |
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316 * @param array $sorted_menu_items The menu items, sorted by each menu item's menu order. |
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317 */ |
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318 $sorted_menu_items = apply_filters( 'wp_nav_menu_objects', $sorted_menu_items, $args ); |
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319 |
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320 $items .= walk_nav_menu_tree( $sorted_menu_items, $args->depth, $args ); |
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321 unset($sorted_menu_items); |
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322 |
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323 // Attributes |
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324 if ( ! empty( $args->menu_id ) ) { |
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325 $wrap_id = $args->menu_id; |
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326 } else { |
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327 $wrap_id = 'menu-' . $menu->slug; |
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328 while ( in_array( $wrap_id, $menu_id_slugs ) ) { |
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329 if ( preg_match( '#-(\d+)$#', $wrap_id, $matches ) ) |
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330 $wrap_id = preg_replace('#-(\d+)$#', '-' . ++$matches[1], $wrap_id ); |
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331 else |
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332 $wrap_id = $wrap_id . '-1'; |
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333 } |
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334 } |
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335 $menu_id_slugs[] = $wrap_id; |
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336 |
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337 $wrap_class = $args->menu_class ? $args->menu_class : ''; |
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338 |
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339 /** |
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340 * Filter the HTML list content for navigation menus. |
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341 * |
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342 * @since 3.0.0 |
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343 * |
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344 * @param string $items The HTML list content for the menu items. |
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345 * @param array $args Arguments from {@see wp_nav_menu()}. |
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346 */ |
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347 $items = apply_filters( 'wp_nav_menu_items', $items, $args ); |
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348 /** |
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349 * Filter the HTML list content for a specific navigation menu. |
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350 * |
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351 * @since 3.0.0 |
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352 * |
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353 * @param string $items The HTML list content for the menu items. |
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354 * @param array $args Arguments from {@see wp_nav_menu()}. |
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355 */ |
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356 $items = apply_filters( "wp_nav_menu_{$menu->slug}_items", $items, $args ); |
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357 |
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358 // Don't print any markup if there are no items at this point. |
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359 if ( empty( $items ) ) |
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360 return false; |
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361 |
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362 $nav_menu .= sprintf( $args->items_wrap, esc_attr( $wrap_id ), esc_attr( $wrap_class ), $items ); |
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363 unset( $items ); |
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364 |
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365 if ( $show_container ) |
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366 $nav_menu .= '</' . $args->container . '>'; |
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367 |
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368 /** |
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369 * Filter the HTML content for navigation menus. |
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370 * |
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371 * @since 3.0.0 |
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372 * |
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373 * @param string $nav_menu The HTML content for the navigation menu. |
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374 * @param array $args Arguments from {@see wp_nav_menu()}. |
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375 */ |
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376 $nav_menu = apply_filters( 'wp_nav_menu', $nav_menu, $args ); |
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377 |
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378 if ( $args->echo ) |
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379 echo $nav_menu; |
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380 else |
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381 return $nav_menu; |
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382 } |
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383 |
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384 /** |
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385 * Add the class property classes for the current context, if applicable. |
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386 * |
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387 * @access private |
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388 * @since 3.0 |
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389 * |
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390 * @param array $menu_items The current menu item objects to which to add the class property information. |
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391 */ |
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392 function _wp_menu_item_classes_by_context( &$menu_items ) { |
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393 global $wp_query, $wp_rewrite; |
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394 |
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395 $queried_object = $wp_query->get_queried_object(); |
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396 $queried_object_id = (int) $wp_query->queried_object_id; |
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397 |
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398 $active_object = ''; |
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399 $active_ancestor_item_ids = array(); |
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400 $active_parent_item_ids = array(); |
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401 $active_parent_object_ids = array(); |
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402 $possible_taxonomy_ancestors = array(); |
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403 $possible_object_parents = array(); |
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404 $home_page_id = (int) get_option( 'page_for_posts' ); |
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405 |
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406 if ( $wp_query->is_singular && ! empty( $queried_object->post_type ) && ! is_post_type_hierarchical( $queried_object->post_type ) ) { |
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407 foreach ( (array) get_object_taxonomies( $queried_object->post_type ) as $taxonomy ) { |
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408 if ( is_taxonomy_hierarchical( $taxonomy ) ) { |
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409 $term_hierarchy = _get_term_hierarchy( $taxonomy ); |
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410 $terms = wp_get_object_terms( $queried_object_id, $taxonomy, array( 'fields' => 'ids' ) ); |
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411 if ( is_array( $terms ) ) { |
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412 $possible_object_parents = array_merge( $possible_object_parents, $terms ); |
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413 $term_to_ancestor = array(); |
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414 foreach ( (array) $term_hierarchy as $anc => $descs ) { |
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415 foreach ( (array) $descs as $desc ) |
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416 $term_to_ancestor[ $desc ] = $anc; |
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417 } |
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418 |
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419 foreach ( $terms as $desc ) { |
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420 do { |
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421 $possible_taxonomy_ancestors[ $taxonomy ][] = $desc; |
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422 if ( isset( $term_to_ancestor[ $desc ] ) ) { |
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423 $_desc = $term_to_ancestor[ $desc ]; |
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424 unset( $term_to_ancestor[ $desc ] ); |
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425 $desc = $_desc; |
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426 } else { |
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427 $desc = 0; |
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428 } |
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429 } while ( ! empty( $desc ) ); |
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430 } |
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431 } |
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432 } |
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433 } |
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434 } elseif ( ! empty( $queried_object->taxonomy ) && is_taxonomy_hierarchical( $queried_object->taxonomy ) ) { |
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435 $term_hierarchy = _get_term_hierarchy( $queried_object->taxonomy ); |
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436 $term_to_ancestor = array(); |
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437 foreach ( (array) $term_hierarchy as $anc => $descs ) { |
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438 foreach ( (array) $descs as $desc ) |
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439 $term_to_ancestor[ $desc ] = $anc; |
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440 } |
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441 $desc = $queried_object->term_id; |
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442 do { |
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443 $possible_taxonomy_ancestors[ $queried_object->taxonomy ][] = $desc; |
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444 if ( isset( $term_to_ancestor[ $desc ] ) ) { |
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445 $_desc = $term_to_ancestor[ $desc ]; |
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446 unset( $term_to_ancestor[ $desc ] ); |
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447 $desc = $_desc; |
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448 } else { |
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449 $desc = 0; |
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450 } |
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451 } while ( ! empty( $desc ) ); |
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452 } |
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453 |
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454 $possible_object_parents = array_filter( $possible_object_parents ); |
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455 |
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456 $front_page_url = home_url(); |
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457 |
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458 foreach ( (array) $menu_items as $key => $menu_item ) { |
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459 |
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460 $menu_items[$key]->current = false; |
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461 |
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462 $classes = (array) $menu_item->classes; |
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463 $classes[] = 'menu-item'; |
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464 $classes[] = 'menu-item-type-' . $menu_item->type; |
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465 $classes[] = 'menu-item-object-' . $menu_item->object; |
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466 |
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467 // if the menu item corresponds to a taxonomy term for the currently-queried non-hierarchical post object |
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468 if ( $wp_query->is_singular && 'taxonomy' == $menu_item->type && in_array( $menu_item->object_id, $possible_object_parents ) ) { |
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469 $active_parent_object_ids[] = (int) $menu_item->object_id; |
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470 $active_parent_item_ids[] = (int) $menu_item->db_id; |
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471 $active_object = $queried_object->post_type; |
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472 |
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473 // if the menu item corresponds to the currently-queried post or taxonomy object |
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474 } elseif ( |
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475 $menu_item->object_id == $queried_object_id && |
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476 ( |
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477 ( ! empty( $home_page_id ) && 'post_type' == $menu_item->type && $wp_query->is_home && $home_page_id == $menu_item->object_id ) || |
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478 ( 'post_type' == $menu_item->type && $wp_query->is_singular ) || |
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479 ( 'taxonomy' == $menu_item->type && ( $wp_query->is_category || $wp_query->is_tag || $wp_query->is_tax ) && $queried_object->taxonomy == $menu_item->object ) |
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480 ) |
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481 ) { |
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482 $classes[] = 'current-menu-item'; |
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483 $menu_items[$key]->current = true; |
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484 $_anc_id = (int) $menu_item->db_id; |
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485 |
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486 while( |
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487 ( $_anc_id = get_post_meta( $_anc_id, '_menu_item_menu_item_parent', true ) ) && |
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488 ! in_array( $_anc_id, $active_ancestor_item_ids ) |
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489 ) { |
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490 $active_ancestor_item_ids[] = $_anc_id; |
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491 } |
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492 |
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493 if ( 'post_type' == $menu_item->type && 'page' == $menu_item->object ) { |
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494 // Back compat classes for pages to match wp_page_menu() |
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495 $classes[] = 'page_item'; |
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496 $classes[] = 'page-item-' . $menu_item->object_id; |
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497 $classes[] = 'current_page_item'; |
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498 } |
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499 $active_parent_item_ids[] = (int) $menu_item->menu_item_parent; |
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500 $active_parent_object_ids[] = (int) $menu_item->post_parent; |
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501 $active_object = $menu_item->object; |
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502 |
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503 // if the menu item corresponds to the currently-requested URL |
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504 } elseif ( 'custom' == $menu_item->object ) { |
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505 $_root_relative_current = untrailingslashit( $_SERVER['REQUEST_URI'] ); |
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506 $current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_root_relative_current ); |
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507 $raw_item_url = strpos( $menu_item->url, '#' ) ? substr( $menu_item->url, 0, strpos( $menu_item->url, '#' ) ) : $menu_item->url; |
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508 $item_url = untrailingslashit( $raw_item_url ); |
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509 $_indexless_current = untrailingslashit( preg_replace( '/' . preg_quote( $wp_rewrite->index, '/' ) . '$/', '', $current_url ) ); |
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510 |
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511 if ( $raw_item_url && in_array( $item_url, array( $current_url, $_indexless_current, $_root_relative_current ) ) ) { |
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512 $classes[] = 'current-menu-item'; |
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513 $menu_items[$key]->current = true; |
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514 $_anc_id = (int) $menu_item->db_id; |
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515 |
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516 while( |
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517 ( $_anc_id = get_post_meta( $_anc_id, '_menu_item_menu_item_parent', true ) ) && |
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518 ! in_array( $_anc_id, $active_ancestor_item_ids ) |
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519 ) { |
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520 $active_ancestor_item_ids[] = $_anc_id; |
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521 } |
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522 |
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523 if ( in_array( home_url(), array( untrailingslashit( $current_url ), untrailingslashit( $_indexless_current ) ) ) ) { |
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524 // Back compat for home link to match wp_page_menu() |
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525 $classes[] = 'current_page_item'; |
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526 } |
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527 $active_parent_item_ids[] = (int) $menu_item->menu_item_parent; |
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528 $active_parent_object_ids[] = (int) $menu_item->post_parent; |
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529 $active_object = $menu_item->object; |
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530 |
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531 // give front page item current-menu-item class when extra query arguments involved |
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532 } elseif ( $item_url == $front_page_url && is_front_page() ) { |
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533 $classes[] = 'current-menu-item'; |
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534 } |
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535 |
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536 if ( untrailingslashit($item_url) == home_url() ) |
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537 $classes[] = 'menu-item-home'; |
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538 } |
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539 |
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540 // back-compat with wp_page_menu: add "current_page_parent" to static home page link for any non-page query |
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541 if ( ! empty( $home_page_id ) && 'post_type' == $menu_item->type && empty( $wp_query->is_page ) && $home_page_id == $menu_item->object_id ) |
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542 $classes[] = 'current_page_parent'; |
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543 |
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544 $menu_items[$key]->classes = array_unique( $classes ); |
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545 } |
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546 $active_ancestor_item_ids = array_filter( array_unique( $active_ancestor_item_ids ) ); |
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547 $active_parent_item_ids = array_filter( array_unique( $active_parent_item_ids ) ); |
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548 $active_parent_object_ids = array_filter( array_unique( $active_parent_object_ids ) ); |
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549 |
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550 // set parent's class |
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551 foreach ( (array) $menu_items as $key => $parent_item ) { |
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552 $classes = (array) $parent_item->classes; |
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553 $menu_items[$key]->current_item_ancestor = false; |
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554 $menu_items[$key]->current_item_parent = false; |
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555 |
|
556 if ( |
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557 isset( $parent_item->type ) && |
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558 ( |
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559 // ancestral post object |
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560 ( |
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561 'post_type' == $parent_item->type && |
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562 ! empty( $queried_object->post_type ) && |
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563 is_post_type_hierarchical( $queried_object->post_type ) && |
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564 in_array( $parent_item->object_id, $queried_object->ancestors ) && |
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565 $parent_item->object != $queried_object->ID |
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566 ) || |
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567 |
|
568 // ancestral term |
|
569 ( |
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570 'taxonomy' == $parent_item->type && |
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571 isset( $possible_taxonomy_ancestors[ $parent_item->object ] ) && |
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572 in_array( $parent_item->object_id, $possible_taxonomy_ancestors[ $parent_item->object ] ) && |
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573 ( |
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574 ! isset( $queried_object->term_id ) || |
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575 $parent_item->object_id != $queried_object->term_id |
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576 ) |
|
577 ) |
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578 ) |
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579 ) { |
|
580 $classes[] = empty( $queried_object->taxonomy ) ? 'current-' . $queried_object->post_type . '-ancestor' : 'current-' . $queried_object->taxonomy . '-ancestor'; |
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581 } |
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582 |
|
583 if ( in_array( intval( $parent_item->db_id ), $active_ancestor_item_ids ) ) { |
|
584 $classes[] = 'current-menu-ancestor'; |
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585 $menu_items[$key]->current_item_ancestor = true; |
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586 } |
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587 if ( in_array( $parent_item->db_id, $active_parent_item_ids ) ) { |
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588 $classes[] = 'current-menu-parent'; |
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589 $menu_items[$key]->current_item_parent = true; |
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590 } |
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591 if ( in_array( $parent_item->object_id, $active_parent_object_ids ) ) |
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592 $classes[] = 'current-' . $active_object . '-parent'; |
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593 |
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594 if ( 'post_type' == $parent_item->type && 'page' == $parent_item->object ) { |
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595 // Back compat classes for pages to match wp_page_menu() |
|
596 if ( in_array('current-menu-parent', $classes) ) |
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597 $classes[] = 'current_page_parent'; |
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598 if ( in_array('current-menu-ancestor', $classes) ) |
|
599 $classes[] = 'current_page_ancestor'; |
|
600 } |
|
601 |
|
602 $menu_items[$key]->classes = array_unique( $classes ); |
|
603 } |
|
604 } |
|
605 |
|
606 /** |
|
607 * Retrieve the HTML list content for nav menu items. |
|
608 * |
|
609 * @uses Walker_Nav_Menu to create HTML list content. |
|
610 * @since 3.0.0 |
|
611 * @see Walker::walk() for parameters and return description. |
|
612 */ |
|
613 function walk_nav_menu_tree( $items, $depth, $r ) { |
|
614 $walker = ( empty($r->walker) ) ? new Walker_Nav_Menu : $r->walker; |
|
615 $args = array( $items, $depth, $r ); |
|
616 |
|
617 return call_user_func_array( array($walker, 'walk'), $args ); |
|
618 } |
|
619 |
|
620 /** |
|
621 * Prevents a menu item ID from being used more than once. |
|
622 * |
|
623 * @since 3.0.1 |
|
624 * @access private |
|
625 */ |
|
626 function _nav_menu_item_id_use_once( $id, $item ) { |
|
627 static $_used_ids = array(); |
|
628 if ( in_array( $item->ID, $_used_ids ) ) |
|
629 return ''; |
|
630 $_used_ids[] = $item->ID; |
|
631 return $id; |
|
632 } |
|
633 add_filter( 'nav_menu_item_id', '_nav_menu_item_id_use_once', 10, 2 ); |