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159 lines
5.2 KiB
159 lines
5.2 KiB
<?php |
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/** |
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* Widget API: WP_Nav_Menu_Widget class |
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* |
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* @package WordPress |
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* @subpackage Widgets |
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* @since 4.4.0 |
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*/ |
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/** |
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* Core class used to implement the Navigation Menu widget. |
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* |
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* @since 3.0.0 |
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* |
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* @see WP_Widget |
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*/ |
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class WP_Nav_Menu_Widget extends WP_Widget { |
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/** |
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* Sets up a new Navigation Menu widget instance. |
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* |
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* @since 3.0.0 |
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*/ |
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public function __construct() { |
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$widget_ops = array( |
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'description' => __( 'Add a navigation menu to your sidebar.' ), |
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'customize_selective_refresh' => true, |
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); |
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parent::__construct( 'nav_menu', __('Navigation Menu'), $widget_ops ); |
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} |
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/** |
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* Outputs the content for the current Navigation Menu widget instance. |
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* |
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* @since 3.0.0 |
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* |
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* @param array $args Display arguments including 'before_title', 'after_title', |
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* 'before_widget', and 'after_widget'. |
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* @param array $instance Settings for the current Navigation Menu widget instance. |
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*/ |
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public function widget( $args, $instance ) { |
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// Get menu |
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$nav_menu = ! empty( $instance['nav_menu'] ) ? wp_get_nav_menu_object( $instance['nav_menu'] ) : false; |
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if ( ! $nav_menu ) { |
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return; |
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} |
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$title = ! empty( $instance['title'] ) ? $instance['title'] : ''; |
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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$title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
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echo $args['before_widget']; |
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if ( $title ) { |
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echo $args['before_title'] . $title . $args['after_title']; |
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} |
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$nav_menu_args = array( |
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'fallback_cb' => '', |
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'menu' => $nav_menu |
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); |
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/** |
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* Filters the arguments for the Navigation Menu widget. |
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* |
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* @since 4.2.0 |
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* @since 4.4.0 Added the `$instance` parameter. |
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* |
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* @param array $nav_menu_args { |
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* An array of arguments passed to wp_nav_menu() to retrieve a navigation menu. |
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* |
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* @type callable|bool $fallback_cb Callback to fire if the menu doesn't exist. Default empty. |
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* @type mixed $menu Menu ID, slug, or name. |
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* } |
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* @param WP_Term $nav_menu Nav menu object for the current menu. |
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* @param array $args Display arguments for the current widget. |
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* @param array $instance Array of settings for the current widget. |
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*/ |
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wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance ) ); |
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echo $args['after_widget']; |
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} |
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/** |
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* Handles updating settings for the current Navigation Menu widget instance. |
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* |
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* @since 3.0.0 |
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* |
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* @param array $new_instance New settings for this instance as input by the user via |
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* WP_Widget::form(). |
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* @param array $old_instance Old settings for this instance. |
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* @return array Updated settings to save. |
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*/ |
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public function update( $new_instance, $old_instance ) { |
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$instance = array(); |
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if ( ! empty( $new_instance['title'] ) ) { |
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$instance['title'] = sanitize_text_field( $new_instance['title'] ); |
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} |
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if ( ! empty( $new_instance['nav_menu'] ) ) { |
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$instance['nav_menu'] = (int) $new_instance['nav_menu']; |
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} |
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return $instance; |
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} |
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/** |
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* Outputs the settings form for the Navigation Menu widget. |
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* |
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* @since 3.0.0 |
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* |
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* @param array $instance Current settings. |
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* @global WP_Customize_Manager $wp_customize |
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*/ |
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public function form( $instance ) { |
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global $wp_customize; |
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$title = isset( $instance['title'] ) ? $instance['title'] : ''; |
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$nav_menu = isset( $instance['nav_menu'] ) ? $instance['nav_menu'] : ''; |
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// Get menus |
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$menus = wp_get_nav_menus(); |
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// If no menus exists, direct the user to go and create some. |
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?> |
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<p class="nav-menu-widget-no-menus-message" <?php if ( ! empty( $menus ) ) { echo ' style="display:none" '; } ?>> |
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<?php |
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if ( $wp_customize instanceof WP_Customize_Manager ) { |
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$url = 'javascript: wp.customize.panel( "nav_menus" ).focus();'; |
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} else { |
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$url = admin_url( 'nav-menus.php' ); |
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} |
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?> |
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<?php echo sprintf( __( 'No menus have been created yet. <a href="%s">Create some</a>.' ), esc_attr( $url ) ); ?> |
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</p> |
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<div class="nav-menu-widget-form-controls" <?php if ( empty( $menus ) ) { echo ' style="display:none" '; } ?>> |
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<p> |
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<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ) ?></label> |
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<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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</p> |
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<p> |
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<label for="<?php echo $this->get_field_id( 'nav_menu' ); ?>"><?php _e( 'Select Menu:' ); ?></label> |
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<select id="<?php echo $this->get_field_id( 'nav_menu' ); ?>" name="<?php echo $this->get_field_name( 'nav_menu' ); ?>"> |
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<option value="0"><?php _e( '— Select —' ); ?></option> |
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<?php foreach ( $menus as $menu ) : ?> |
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<option value="<?php echo esc_attr( $menu->term_id ); ?>" <?php selected( $nav_menu, $menu->term_id ); ?>> |
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<?php echo esc_html( $menu->name ); ?> |
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</option> |
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<?php endforeach; ?> |
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</select> |
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</p> |
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<?php if ( $wp_customize instanceof WP_Customize_Manager ) : ?> |
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<p class="edit-selected-nav-menu" style="<?php if ( ! $nav_menu ) { echo 'display: none;'; } ?>"> |
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<button type="button" class="button"><?php _e( 'Edit Menu' ) ?></button> |
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</p> |
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<?php endif; ?> |
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</div> |
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<?php |
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} |
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}
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