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1 <?php |
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2 /** |
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3 * Widget API: WP_Nav_Menu_Widget class |
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4 * |
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5 * @package WordPress |
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6 * @subpackage Widgets |
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7 * @since 4.4.0 |
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8 */ |
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9 |
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10 /** |
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11 * Core class used to implement the Navigation Menu widget. |
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12 * |
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13 * @since 3.0.0 |
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14 * |
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15 * @see WP_Widget |
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16 */ |
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17 class WP_Nav_Menu_Widget extends WP_Widget { |
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18 |
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19 /** |
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20 * Sets up a new Navigation Menu widget instance. |
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21 * |
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22 * @since 3.0.0 |
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23 */ |
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24 public function __construct() { |
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25 $widget_ops = array( |
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26 'description' => __( 'Add a navigation menu to your sidebar.' ), |
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27 'customize_selective_refresh' => true, |
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28 ); |
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29 parent::__construct( 'nav_menu', __('Navigation Menu'), $widget_ops ); |
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30 } |
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31 |
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32 /** |
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33 * Outputs the content for the current Navigation Menu widget instance. |
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34 * |
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35 * @since 3.0.0 |
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36 * |
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37 * @param array $args Display arguments including 'before_title', 'after_title', |
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38 * 'before_widget', and 'after_widget'. |
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39 * @param array $instance Settings for the current Navigation Menu widget instance. |
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40 */ |
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41 public function widget( $args, $instance ) { |
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42 // Get menu |
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43 $nav_menu = ! empty( $instance['nav_menu'] ) ? wp_get_nav_menu_object( $instance['nav_menu'] ) : false; |
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44 |
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45 if ( ! $nav_menu ) { |
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46 return; |
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47 } |
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48 |
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49 $title = ! empty( $instance['title'] ) ? $instance['title'] : ''; |
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50 |
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51 /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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52 $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
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53 |
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54 echo $args['before_widget']; |
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55 |
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56 if ( $title ) { |
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57 echo $args['before_title'] . $title . $args['after_title']; |
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58 } |
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59 |
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60 $nav_menu_args = array( |
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61 'fallback_cb' => '', |
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62 'menu' => $nav_menu |
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63 ); |
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64 |
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65 /** |
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66 * Filters the arguments for the Navigation Menu widget. |
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67 * |
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68 * @since 4.2.0 |
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69 * @since 4.4.0 Added the `$instance` parameter. |
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70 * |
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71 * @param array $nav_menu_args { |
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72 * An array of arguments passed to wp_nav_menu() to retrieve a navigation menu. |
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73 * |
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74 * @type callable|bool $fallback_cb Callback to fire if the menu doesn't exist. Default empty. |
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75 * @type mixed $menu Menu ID, slug, or name. |
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76 * } |
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77 * @param WP_Term $nav_menu Nav menu object for the current menu. |
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78 * @param array $args Display arguments for the current widget. |
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79 * @param array $instance Array of settings for the current widget. |
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80 */ |
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81 wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance ) ); |
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82 |
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83 echo $args['after_widget']; |
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84 } |
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85 |
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86 /** |
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87 * Handles updating settings for the current Navigation Menu widget instance. |
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88 * |
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89 * @since 3.0.0 |
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90 * |
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91 * @param array $new_instance New settings for this instance as input by the user via |
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92 * WP_Widget::form(). |
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93 * @param array $old_instance Old settings for this instance. |
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94 * @return array Updated settings to save. |
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95 */ |
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96 public function update( $new_instance, $old_instance ) { |
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97 $instance = array(); |
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98 if ( ! empty( $new_instance['title'] ) ) { |
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99 $instance['title'] = sanitize_text_field( $new_instance['title'] ); |
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100 } |
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101 if ( ! empty( $new_instance['nav_menu'] ) ) { |
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102 $instance['nav_menu'] = (int) $new_instance['nav_menu']; |
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103 } |
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104 return $instance; |
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105 } |
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106 |
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107 /** |
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108 * Outputs the settings form for the Navigation Menu widget. |
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109 * |
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110 * @since 3.0.0 |
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111 * |
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112 * @param array $instance Current settings. |
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113 * @global WP_Customize_Manager $wp_customize |
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114 */ |
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115 public function form( $instance ) { |
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116 global $wp_customize; |
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117 $title = isset( $instance['title'] ) ? $instance['title'] : ''; |
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118 $nav_menu = isset( $instance['nav_menu'] ) ? $instance['nav_menu'] : ''; |
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119 |
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120 // Get menus |
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121 $menus = wp_get_nav_menus(); |
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122 |
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123 // If no menus exists, direct the user to go and create some. |
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124 ?> |
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125 <p class="nav-menu-widget-no-menus-message" <?php if ( ! empty( $menus ) ) { echo ' style="display:none" '; } ?>> |
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126 <?php |
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127 if ( $wp_customize instanceof WP_Customize_Manager ) { |
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128 $url = 'javascript: wp.customize.panel( "nav_menus" ).focus();'; |
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129 } else { |
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130 $url = admin_url( 'nav-menus.php' ); |
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131 } |
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132 ?> |
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133 <?php echo sprintf( __( 'No menus have been created yet. <a href="%s">Create some</a>.' ), esc_attr( $url ) ); ?> |
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134 </p> |
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135 <div class="nav-menu-widget-form-controls" <?php if ( empty( $menus ) ) { echo ' style="display:none" '; } ?>> |
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136 <p> |
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137 <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ) ?></label> |
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138 <input type="text" class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo esc_attr( $title ); ?>"/> |
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139 </p> |
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140 <p> |
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141 <label for="<?php echo $this->get_field_id( 'nav_menu' ); ?>"><?php _e( 'Select Menu:' ); ?></label> |
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142 <select id="<?php echo $this->get_field_id( 'nav_menu' ); ?>" name="<?php echo $this->get_field_name( 'nav_menu' ); ?>"> |
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143 <option value="0"><?php _e( '— Select —' ); ?></option> |
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144 <?php foreach ( $menus as $menu ) : ?> |
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145 <option value="<?php echo esc_attr( $menu->term_id ); ?>" <?php selected( $nav_menu, $menu->term_id ); ?>> |
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146 <?php echo esc_html( $menu->name ); ?> |
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147 </option> |
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148 <?php endforeach; ?> |
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149 </select> |
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150 </p> |
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151 <?php if ( $wp_customize instanceof WP_Customize_Manager ) : ?> |
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152 <p class="edit-selected-nav-menu" style="<?php if ( ! $nav_menu ) { echo 'display: none;'; } ?>"> |
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153 <button type="button" class="button"><?php _e( 'Edit Menu' ) ?></button> |
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154 </p> |
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155 <?php endif; ?> |
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156 </div> |
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157 <?php |
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158 } |
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159 } |