<?php

/**

 * Widget API: WP_Widget_Links class

 *

 * @package WordPress

 * @subpackage Widgets

 * @since 4.4.0

 */

/**

 * Core class used to implement a Links widget.

 *

 * @since 2.8.0

 *

 * @see WP_Widget

 */

class WP_Widget_Links extends WP_Widget {

	/**

	 * Sets up a new Links widget instance.

	 *

	 * @since 2.8.0

	 */

	public function __construct() {

		$widget_ops = array(

			'description'                 => __( 'Your blogroll' ),

			'customize_selective_refresh' => true,

		);

		parent::__construct( 'links', __( 'Links' ), $widget_ops );

	}

	/**

	 * Outputs the content for the current Links widget instance.

	 *

	 * @since 2.8.0

	 *

	 * @param array $args     Display arguments including 'before_title', 'after_title',

	 *                        'before_widget', and 'after_widget'.

	 * @param array $instance Settings for the current Links widget instance.

	 */

	public function widget( $args, $instance ) {

		$show_description = isset( $instance['description'] ) ? $instance['description'] : false;

		$show_name        = isset( $instance['name'] ) ? $instance['name'] : false;

		$show_rating      = isset( $instance['rating'] ) ? $instance['rating'] : false;

		$show_images      = isset( $instance['images'] ) ? $instance['images'] : true;

		$category         = isset( $instance['category'] ) ? $instance['category'] : false;

		$orderby          = isset( $instance['orderby'] ) ? $instance['orderby'] : 'name';

		$order            = 'rating' === $orderby ? 'DESC' : 'ASC';

		$limit            = isset( $instance['limit'] ) ? $instance['limit'] : -1;

		$before_widget = preg_replace( '/ id="[^"]*"/', ' id="%id"', $args['before_widget'] );

		$widget_links_args = array(

			'title_before'     => $args['before_title'],

			'title_after'      => $args['after_title'],

			'category_before'  => $before_widget,

			'category_after'   => $args['after_widget'],

			'show_images'      => $show_images,

			'show_description' => $show_description,

			'show_name'        => $show_name,

			'show_rating'      => $show_rating,

			'category'         => $category,

			'class'            => 'linkcat widget',

			'orderby'          => $orderby,

			'order'            => $order,

			'limit'            => $limit,

		);

		/**

		 * Filters the arguments for the Links widget.

		 *

		 * @since 2.6.0

		 * @since 4.4.0 Added the `$instance` parameter.

		 *

		 * @see wp_list_bookmarks()

		 *

		 * @param array $widget_links_args An array of arguments to retrieve the links list.

		 * @param array $instance          The settings for the particular instance of the widget.

		 */

		wp_list_bookmarks( apply_filters( 'widget_links_args', $widget_links_args, $instance ) );

	}

	/**

	 * Handles updating settings for the current Links widget instance.

	 *

	 * @since 2.8.0

	 *

	 * @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 ) {

		$new_instance = (array) $new_instance;

		$instance     = array(

			'images'      => 0,

			'name'        => 0,

			'description' => 0,

			'rating'      => 0,

		);

		foreach ( $instance as $field => $val ) {

			if ( isset( $new_instance[ $field ] ) ) {

				$instance[ $field ] = 1;

			}

		}

		$instance['orderby'] = 'name';

		if ( in_array( $new_instance['orderby'], array( 'name', 'rating', 'id', 'rand' ), true ) ) {

			$instance['orderby'] = $new_instance['orderby'];

		}

		$instance['category'] = (int) $new_instance['category'];

		$instance['limit']    = ! empty( $new_instance['limit'] ) ? (int) $new_instance['limit'] : -1;

		return $instance;

	}

	/**

	 * Outputs the settings form for the Links widget.

	 *

	 * @since 2.8.0

	 *

	 * @param array $instance Current settings.

	 */

	public function form( $instance ) {

		// Defaults.

		$instance  = wp_parse_args(

			(array) $instance,

			array(

				'images'      => true,

				'name'        => true,

				'description' => false,

				'rating'      => false,

				'category'    => false,

				'orderby'     => 'name',

				'limit'       => -1,

			)

		);

		$link_cats = get_terms( array( 'taxonomy' => 'link_category' ) );

		$limit     = (int) $instance['limit'];

		if ( ! $limit ) {

			$limit = -1;

		}

		?>

		<p>

			<label for="<?php echo $this->get_field_id( 'category' ); ?>"><?php _e( 'Select Link Category:' ); ?></label>

			<select class="widefat" id="<?php echo $this->get_field_id( 'category' ); ?>" name="<?php echo $this->get_field_name( 'category' ); ?>">

				<option value=""><?php _ex( 'All Links', 'links widget' ); ?></option>

				<?php foreach ( $link_cats as $link_cat ) : ?>

					<option value="<?php echo (int) $link_cat->term_id; ?>" <?php selected( $instance['category'], $link_cat->term_id ); ?>>

						<?php echo esc_html( $link_cat->name ); ?>

					</option>

				<?php endforeach; ?>

			</select>

			<label for="<?php echo $this->get_field_id( 'orderby' ); ?>"><?php _e( 'Sort by:' ); ?></label>

			<select name="<?php echo $this->get_field_name( 'orderby' ); ?>" id="<?php echo $this->get_field_id( 'orderby' ); ?>" class="widefat">

				<option value="name"<?php selected( $instance['orderby'], 'name' ); ?>><?php _e( 'Link title' ); ?></option>

				<option value="rating"<?php selected( $instance['orderby'], 'rating' ); ?>><?php _e( 'Link rating' ); ?></option>

				<option value="id"<?php selected( $instance['orderby'], 'id' ); ?>><?php _e( 'Link ID' ); ?></option>

				<option value="rand"<?php selected( $instance['orderby'], 'rand' ); ?>><?php _ex( 'Random', 'Links widget' ); ?></option>

			</select>

		</p>

		<p>

			<input class="checkbox" type="checkbox"<?php checked( $instance['images'], true ); ?> id="<?php echo $this->get_field_id( 'images' ); ?>" name="<?php echo $this->get_field_name( 'images' ); ?>" />

			<label for="<?php echo $this->get_field_id( 'images' ); ?>"><?php _e( 'Show Link Image' ); ?></label>

			<br />

			<input class="checkbox" type="checkbox"<?php checked( $instance['name'], true ); ?> id="<?php echo $this->get_field_id( 'name' ); ?>" name="<?php echo $this->get_field_name( 'name' ); ?>" />

			<label for="<?php echo $this->get_field_id( 'name' ); ?>"><?php _e( 'Show Link Name' ); ?></label>

			<br />

			<input class="checkbox" type="checkbox"<?php checked( $instance['description'], true ); ?> id="<?php echo $this->get_field_id( 'description' ); ?>" name="<?php echo $this->get_field_name( 'description' ); ?>" />

			<label for="<?php echo $this->get_field_id( 'description' ); ?>"><?php _e( 'Show Link Description' ); ?></label>

			<br />

			<input class="checkbox" type="checkbox"<?php checked( $instance['rating'], true ); ?> id="<?php echo $this->get_field_id( 'rating' ); ?>" name="<?php echo $this->get_field_name( 'rating' ); ?>" />

			<label for="<?php echo $this->get_field_id( 'rating' ); ?>"><?php _e( 'Show Link Rating' ); ?></label>

		</p>

		<p>

			<label for="<?php echo $this->get_field_id( 'limit' ); ?>"><?php _e( 'Number of links to show:' ); ?></label>

			<input id="<?php echo $this->get_field_id( 'limit' ); ?>" name="<?php echo $this->get_field_name( 'limit' ); ?>" type="text" value="<?php echo ( -1 !== $limit ) ? (int) $limit : ''; ?>" size="3" />

		</p>

		<?php

	}

}