<?php

/**

 * Widget API: WP_Widget_Recent_Posts class

 *

 * @package WordPress

 * @subpackage Widgets

 * @since 4.4.0

 */

/**

 * Core class used to implement a Recent Posts widget.

 *

 * @since 2.8.0

 *

 * @see WP_Widget

 */

class WP_Widget_Recent_Posts extends WP_Widget {

	/**

	 * Sets up a new Recent Posts widget instance.

	 *

	 * @since 2.8.0

	 */

	public function __construct() {

		$widget_ops = array(

			'classname'                   => 'widget_recent_entries',

			'description'                 => __( 'Your site’s most recent Posts.' ),

			'customize_selective_refresh' => true,

			'show_instance_in_rest'       => true,

		);

		parent::__construct( 'recent-posts', __( 'Recent Posts' ), $widget_ops );

		$this->alt_option_name = 'widget_recent_entries';

	}

	/**

	 * Outputs the content for the current Recent Posts 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 Recent Posts widget instance.

	 */

	public function widget( $args, $instance ) {

		if ( ! isset( $args['widget_id'] ) ) {

			$args['widget_id'] = $this->id;

		}

		$default_title = __( 'Recent Posts' );

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

		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */

		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );

		$number = ( ! empty( $instance['number'] ) ) ? absint( $instance['number'] ) : 5;

		if ( ! $number ) {

			$number = 5;

		}

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

		$r = new WP_Query(

			/**

			 * Filters the arguments for the Recent Posts widget.

			 *

			 * @since 3.4.0

			 * @since 4.9.0 Added the `$instance` parameter.

			 *

			 * @see WP_Query::get_posts()

			 *

			 * @param array $args     An array of arguments used to retrieve the recent posts.

			 * @param array $instance Array of settings for the current widget.

			 */

			apply_filters(

				'widget_posts_args',

				array(

					'posts_per_page'      => $number,

					'no_found_rows'       => true,

					'post_status'         => 'publish',

					'ignore_sticky_posts' => true,

				),

				$instance

			)

		);

		if ( ! $r->have_posts() ) {

			return;

		}

		?>

		<?php echo $args['before_widget']; ?>

		<?php

		if ( $title ) {

			echo $args['before_title'] . $title . $args['after_title'];

		}

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

		/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */

		$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;

			echo '<nav aria-label="' . esc_attr( $aria_label ) . '">';

		}

		?>

		<ul>

			<?php foreach ( $r->posts as $recent_post ) : ?>

				<?php

				$post_title   = get_the_title( $recent_post->ID );

				$title        = ( ! empty( $post_title ) ) ? $post_title : __( '(no title)' );

				$aria_current = '';

				if ( get_queried_object_id() === $recent_post->ID ) {

					$aria_current = ' aria-current="page"';

				}

				?>

				<li>

					<a href="<?php the_permalink( $recent_post->ID ); ?>"<?php echo $aria_current; ?>><?php echo $title; ?></a>

					<?php if ( $show_date ) : ?>

						<span class="post-date"><?php echo get_the_date( '', $recent_post->ID ); ?></span>

					<?php endif; ?>

				</li>

			<?php endforeach; ?>

		</ul>

		<?php

		if ( 'html5' === $format ) {

			echo '</nav>';

		}

		echo $args['after_widget'];

	}

	/**

	 * Handles updating the settings for the current Recent Posts 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 ) {

		$instance              = $old_instance;

		$instance['title']     = sanitize_text_field( $new_instance['title'] );

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

		$instance['show_date'] = isset( $new_instance['show_date'] ) ? (bool) $new_instance['show_date'] : false;

		return $instance;

	}

	/**

	 * Outputs the settings form for the Recent Posts widget.

	 *

	 * @since 2.8.0

	 *

	 * @param array $instance Current settings.

	 */

	public function form( $instance ) {

		$title     = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';

		$number    = isset( $instance['number'] ) ? absint( $instance['number'] ) : 5;

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

		?>

		<p>

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

			<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo $title; ?>" />

		</p>

		<p>

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

			<input class="tiny-text" id="<?php echo $this->get_field_id( 'number' ); ?>" name="<?php echo $this->get_field_name( 'number' ); ?>" type="number" step="1" min="1" value="<?php echo $number; ?>" size="3" />

		</p>

		<p>

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

			<label for="<?php echo $this->get_field_id( 'show_date' ); ?>"><?php _e( 'Display post date?' ); ?></label>

		</p>

		<?php

	}

}