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Edit File : class-wp-nav-menu-widget.php \| Size : 6.55 KB
<?php /** * Widget API: WP_Nav_Menu_Widget class * * @package WordPress * @subpackage Widgets * @since 4.4.0 / /* * Core class used to implement the Navigation Menu widget. * * @since 3.0.0 * * @see WP_Widget / class WP_Nav_Menu_Widget extends WP_Widget { /* * Sets up a new Navigation Menu widget instance. * * @since 3.0.0 / public function __construct() { $widget_ops = array( 'description' => __( 'Add a navigation menu to your sidebar.' ), 'customize_selective_refresh' => true, 'show_instance_in_rest' => true, ); parent::__construct( 'nav_menu', __( 'Navigation Menu' ), $widget_ops ); } /* * Outputs the content for the current Navigation Menu widget instance. * * @since 3.0.0 * * @param array $args Display arguments including 'before_title', 'after_title', * 'before_widget', and 'after_widget'. * @param array $instance Settings for the current Navigation Menu widget instance. / public function widget( $args, $instance ) { // Get menu. $nav_menu = ! empty( $instance['nav_menu'] ) ? wp_get_nav_menu_object( $instance['nav_menu'] ) : false; if ( ! $nav_menu ) { return; } $default_title = __( 'Menu' ); $title = ! empty( $instance['title'] ) ? $instance['title'] : ''; /* This filter is documented in wp-includes/widgets/class-wp-widget-pages.php / $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); echo $args['before_widget']; if ( $title ) { echo $args['before_title'] . $title . $args['after_title']; } $format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml'; /* * Filters the HTML format of widgets with navigation links. * * @since 5.5.0 * * @param string $format The type of markup to use in widgets with navigation links. * Accepts 'html5', 'xhtml'. / $format = apply_filters( 'navigation_widgets_format', $format ); if ( 'html5' === $format ) { // The title may be filtered: Strip out HTML and make sure the aria-label is never empty. $title = trim( strip_tags( $title ) ); $aria_label = $title ? $title : $default_title; $nav_menu_args = array( 'fallback_cb' => '', 'menu' => $nav_menu, 'container' => 'nav', 'container_aria_label' => $aria_label, 'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>', ); } else { $nav_menu_args = array( 'fallback_cb' => '', 'menu' => $nav_menu, ); } /* * Filters the arguments for the Navigation Menu widget. * * @since 4.2.0 * @since 4.4.0 Added the `$instance` parameter. * * @param array $nav_menu_args { * An array of arguments passed to wp_nav_menu() to retrieve a navigation menu. * * @type callable\|bool $fallback_cb Callback to fire if the menu doesn't exist. Default empty. * @type mixed $menu Menu ID, slug, or name. * } * @param WP_Term $nav_menu Nav menu object for the current menu. * @param array $args Display arguments for the current widget. * @param array $instance Array of settings for the current widget. / wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance ) ); echo $args['after_widget']; } /* * Handles updating settings for the current Navigation Menu widget instance. * * @since 3.0.0 * * @param array $new_instance New settings for this instance as input by the user via * WP_Widget::form(). * @param array $old_instance Old settings for this instance. * @return array Updated settings to save. / public function update( $new_instance, $old_instance ) { $instance = array(); if ( ! empty( $new_instance['title'] ) ) { $instance['title'] = sanitize_text_field( $new_instance['title'] ); } if ( ! empty( $new_instance['nav_menu'] ) ) { $instance['nav_menu'] = (int) $new_instance['nav_menu']; } return $instance; } /* * Outputs the settings form for the Navigation Menu widget. * * @since 3.0.0 * * @global WP_Customize_Manager $wp_customize * * @param array $instance Current settings. / public function form( $instance ) { global $wp_customize; $title = isset( $instance['title'] ) ? $instance['title'] : ''; $nav_menu = isset( $instance['nav_menu'] ) ? $instance['nav_menu'] : ''; // Get menus. $menus = wp_get_nav_menus(); $empty_menus_style = ''; $not_empty_menus_style = ''; if ( empty( $menus ) ) { $empty_menus_style = ' style="display:none" '; } else { $not_empty_menus_style = ' style="display:none" '; } $nav_menu_style = ''; if ( ! $nav_menu ) { $nav_menu_style = 'display: none;'; } // If no menus exists, direct the user to go and create some. ?> <p class="nav-menu-widget-no-menus-message" <?php echo $not_empty_menus_style; ?>> <?php if ( $wp_customize instanceof WP_Customize_Manager ) { $url = 'javascript: wp.customize.panel( "nav_menus" ).focus();'; } else { $url = admin_url( 'nav-menus.php' ); } printf( / translators: %s: URL to create a new menu. */ __( 'No menus have been created yet. <a href="%s">Create some</a>.' ), // The URL can be a `javascript:` link, so esc_attr() is used here instead of esc_url(). esc_attr( $url ) ); ?> </p> <div class="nav-menu-widget-form-controls" <?php echo $empty_menus_style; ?>> <p> <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label> <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 ); ?>" /> </p> <p> <label for="<?php echo $this->get_field_id( 'nav_menu' ); ?>"><?php _e( 'Select Menu:' ); ?></label> <select id="<?php echo $this->get_field_id( 'nav_menu' ); ?>" name="<?php echo $this->get_field_name( 'nav_menu' ); ?>"> <option value="0"><?php _e( '— Select —' ); ?></option> <?php foreach ( $menus as $menu ) : ?> <option value="<?php echo esc_attr( $menu->term_id ); ?>" <?php selected( $nav_menu, $menu->term_id ); ?>> <?php echo esc_html( $menu->name ); ?> </option> <?php endforeach; ?> </select> </p> <?php if ( $wp_customize instanceof WP_Customize_Manager ) : ?> <p class="edit-selected-nav-menu" style="<?php echo $nav_menu_style; ?>"> <button type="button" class="button"><?php _e( 'Edit Menu' ); ?></button> </p> <?php endif; ?> </div> <?php } } Back

Edit File : class-wp-nav-menu-widget.php | Size : 6.55 KB

<?php
/**
 * Widget API: WP_Nav_Menu_Widget class
 *
 * @package WordPress
 * @subpackage Widgets
 * @since 4.4.0
 */

/**
 * Core class used to implement the Navigation Menu widget.
 *
 * @since 3.0.0
 *
 * @see WP_Widget
 */
class WP_Nav_Menu_Widget extends WP_Widget {

/**
	 * Sets up a new Navigation Menu widget instance.
	 *
	 * @since 3.0.0
	 */
	public function __construct() {
		$widget_ops = array(
			'description'                 => __( 'Add a navigation menu to your sidebar.' ),
			'customize_selective_refresh' => true,
			'show_instance_in_rest'       => true,
		);
		parent::__construct( 'nav_menu', __( 'Navigation Menu' ), $widget_ops );
	}

/**
	 * Outputs the content for the current Navigation Menu widget instance.
	 *
	 * @since 3.0.0
	 *
	 * @param array $args     Display arguments including 'before_title', 'after_title',
	 *                        'before_widget', and 'after_widget'.
	 * @param array $instance Settings for the current Navigation Menu widget instance.
	 */
	public function widget( $args, $instance ) {
		// Get menu.
		$nav_menu = ! empty( $instance['nav_menu'] ) ? wp_get_nav_menu_object( $instance['nav_menu'] ) : false;

if ( ! $nav_menu ) {
			return;
		}

$default_title = __( 'Menu' );
		$title         = ! empty( $instance['title'] ) ? $instance['title'] : '';

/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );

echo $args['before_widget'];

if ( $title ) {
			echo $args['before_title'] . $title . $args['after_title'];
		}

$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';

/**
		 * Filters the HTML format of widgets with navigation links.
		 *
		 * @since 5.5.0
		 *
		 * @param string $format The type of markup to use in widgets with navigation links.
		 *                       Accepts 'html5', 'xhtml'.
		 */
		$format = apply_filters( 'navigation_widgets_format', $format );

if ( 'html5' === $format ) {
			// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
			$title      = trim( strip_tags( $title ) );
			$aria_label = $title ? $title : $default_title;

$nav_menu_args = array(
				'fallback_cb'          => '',
				'menu'                 => $nav_menu,
				'container'            => 'nav',
				'container_aria_label' => $aria_label,
				'items_wrap'           => '<ul id="%1$s" class="%2$s">%3$s</ul>',
			);
		} else {
			$nav_menu_args = array(
				'fallback_cb' => '',
				'menu'        => $nav_menu,
			);
		}

/**
		 * Filters the arguments for the Navigation Menu widget.
		 *
		 * @since 4.2.0
		 * @since 4.4.0 Added the `$instance` parameter.
		 *
		 * @param array   $nav_menu_args {
		 *     An array of arguments passed to wp_nav_menu() to retrieve a navigation menu.
		 *
		 *     @type callable|bool $fallback_cb Callback to fire if the menu doesn't exist. Default empty.
		 *     @type mixed         $menu        Menu ID, slug, or name.
		 * }
		 * @param WP_Term $nav_menu      Nav menu object for the current menu.
		 * @param array   $args          Display arguments for the current widget.
		 * @param array   $instance      Array of settings for the current widget.
		 */
		wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance ) );

echo $args['after_widget'];
	}

/**
	 * Handles updating settings for the current Navigation Menu widget instance.
	 *
	 * @since 3.0.0
	 *
	 * @param array $new_instance New settings for this instance as input by the user via
	 *                            WP_Widget::form().
	 * @param array $old_instance Old settings for this instance.
	 * @return array Updated settings to save.
	 */
	public function update( $new_instance, $old_instance ) {
		$instance = array();
		if ( ! empty( $new_instance['title'] ) ) {
			$instance['title'] = sanitize_text_field( $new_instance['title'] );
		}
		if ( ! empty( $new_instance['nav_menu'] ) ) {
			$instance['nav_menu'] = (int) $new_instance['nav_menu'];
		}
		return $instance;
	}

/**
	 * Outputs the settings form for the Navigation Menu widget.
	 *
	 * @since 3.0.0
	 *
	 * @global WP_Customize_Manager $wp_customize
	 *
	 * @param array $instance Current settings.
	 */
	public function form( $instance ) {
		global $wp_customize;
		$title    = isset( $instance['title'] ) ? $instance['title'] : '';
		$nav_menu = isset( $instance['nav_menu'] ) ? $instance['nav_menu'] : '';

// Get menus.
		$menus = wp_get_nav_menus();

$empty_menus_style     = '';
		$not_empty_menus_style = '';
		if ( empty( $menus ) ) {
			$empty_menus_style = ' style="display:none" ';
		} else {
			$not_empty_menus_style = ' style="display:none" ';
		}

$nav_menu_style = '';
		if ( ! $nav_menu ) {
			$nav_menu_style = 'display: none;';
		}

// If no menus exists, direct the user to go and create some.
		?>
		<p class="nav-menu-widget-no-menus-message" <?php echo $not_empty_menus_style; ?>>
			<?php
			if ( $wp_customize instanceof WP_Customize_Manager ) {
				$url = 'javascript: wp.customize.panel( "nav_menus" ).focus();';
			} else {
				$url = admin_url( 'nav-menus.php' );
			}

printf(
				/* translators: %s: URL to create a new menu. */
				__( 'No menus have been created yet. <a href="%s">Create some</a>.' ),
				// The URL can be a `javascript:` link, so esc_attr() is used here instead of esc_url().
				esc_attr( $url )
			);
			?>
		</p>
		<div class="nav-menu-widget-form-controls" <?php echo $empty_menus_style; ?>>
			<p>
				<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
				<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 ); ?>" />
			</p>
			<p>
				<label for="<?php echo $this->get_field_id( 'nav_menu' ); ?>"><?php _e( 'Select Menu:' ); ?></label>
				<select id="<?php echo $this->get_field_id( 'nav_menu' ); ?>" name="<?php echo $this->get_field_name( 'nav_menu' ); ?>">
					<option value="0"><?php _e( '&mdash; Select &mdash;' ); ?></option>
					<?php foreach ( $menus as $menu ) : ?>
						<option value="<?php echo esc_attr( $menu->term_id ); ?>" <?php selected( $nav_menu, $menu->term_id ); ?>>
							<?php echo esc_html( $menu->name ); ?>
						</option>
					<?php endforeach; ?>
				</select>
			</p>
			<?php if ( $wp_customize instanceof WP_Customize_Manager ) : ?>
				<p class="edit-selected-nav-menu" style="<?php echo $nav_menu_style; ?>">
					<button type="button" class="button"><?php _e( 'Edit Menu' ); ?></button>
				</p>
			<?php endif; ?>
		</div>
		<?php
	}
}

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