<?php

/**

 * Widget API: WP_Widget_Archives class

 *

 * @package WordPress

 * @subpackage Widgets

 * @since 4.4.0

 */

/**

 * Core class used to implement the Archives widget.

 *

 * @since 2.8.0

 *

 * @see WP_Widget

 */

class WP_Widget_Archives extends WP_Widget {

	/**

	 * Sets up a new Archives widget instance.

	 *

	 * @since 2.8.0

	 */

	public function __construct() {

		$widget_ops = array(

			'classname'                   => 'widget_archive',

			'description'                 => __( 'A monthly archive of your site’s Posts.' ),

			'customize_selective_refresh' => true,

			'show_instance_in_rest'       => true,

		);

		parent::__construct( 'archives', __( 'Archives' ), $widget_ops );

	}

	/**

	 * Outputs the content for the current Archives 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 Archives widget instance.

	 */

	public function widget( $args, $instance ) {

		$default_title = __( 'Archives' );

		$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 );

		$count    = ! empty( $instance['count'] ) ? '1' : '0';

		$dropdown = ! empty( $instance['dropdown'] ) ? '1' : '0';

		echo $args['before_widget'];

		if ( $title ) {

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

		}

		if ( $dropdown ) {

			$dropdown_id = "{$this->id_base}-dropdown-{$this->number}";

			?>

		<label class="screen-reader-text" for="<?php echo esc_attr( $dropdown_id ); ?>"><?php echo $title; ?></label>

		<select id="<?php echo esc_attr( $dropdown_id ); ?>" name="archive-dropdown">

			<?php

			/**

			 * Filters the arguments for the Archives widget drop-down.

			 *

			 * @since 2.8.0

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

			 *

			 * @see wp_get_archives()

			 *

			 * @param array $args     An array of Archives widget drop-down arguments.

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

			 */

			$dropdown_args = apply_filters(

				'widget_archives_dropdown_args',

				array(

					'type'            => 'monthly',

					'format'          => 'option',

					'show_post_count' => $count,

				),

				$instance

			);

			switch ( $dropdown_args['type'] ) {

				case 'yearly':

					$label = __( 'Select Year' );

					break;

				case 'monthly':

					$label = __( 'Select Month' );

					break;

				case 'daily':

					$label = __( 'Select Day' );

					break;

				case 'weekly':

					$label = __( 'Select Week' );

					break;

				default:

					$label = __( 'Select Post' );

					break;

			}

			$type_attr = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"';

			?>

			<option value=""><?php echo esc_html( $label ); ?></option>

			<?php wp_get_archives( $dropdown_args ); ?>

		</select>

<script<?php echo $type_attr; ?>>

/* <![CDATA[ */

(function() {

	var dropdown = document.getElementById( "<?php echo esc_js( $dropdown_id ); ?>" );

	function onSelectChange() {

		if ( dropdown.options[ dropdown.selectedIndex ].value !== '' ) {

			document.location.href = this.options[ this.selectedIndex ].value;

		}

	}

	dropdown.onchange = onSelectChange;

})();

/* ]]> */

</script>

			<?php

		} else {

			$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;

			}

			?>

			<ul>

				<?php

				wp_get_archives(

					/**

					 * Filters the arguments for the Archives widget.

					 *

					 * @since 2.8.0

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

					 *

					 * @see wp_get_archives()

					 *

					 * @param array $args     An array of Archives option arguments.

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

					 */

					apply_filters(

						'widget_archives_args',

						array(

							'type'            => 'monthly',

							'show_post_count' => $count,

						),

						$instance

					)

				);

				?>

			</ul>

			<?php

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

				echo '</nav>';

			}

		}

		echo $args['after_widget'];

	}

	/**

	 * Handles updating settings for the current Archives widget instance.

	 *

	 * @since 2.8.0

	 *

	 * @param array $new_instance New settings for this instance as input by the user via

	 *                            WP_Widget_Archives::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;

		$new_instance         = wp_parse_args(

			(array) $new_instance,

			array(

				'title'    => '',

				'count'    => 0,

				'dropdown' => '',

			)

		);

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

		$instance['count']    = $new_instance['count'] ? 1 : 0;

		$instance['dropdown'] = $new_instance['dropdown'] ? 1 : 0;

		return $instance;

	}

	/**

	 * Outputs the settings form for the Archives widget.

	 *

	 * @since 2.8.0

	 *

	 * @param array $instance Current settings.

	 */

	public function form( $instance ) {

		$instance = wp_parse_args(

			(array) $instance,

			array(

				'title'    => '',

				'count'    => 0,

				'dropdown' => '',

			)

		);

		?>

		<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 esc_attr( $instance['title'] ); ?>" />

		</p>

		<p>

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

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

			<br/>

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

			<label for="<?php echo $this->get_field_id( 'count' ); ?>"><?php _e( 'Show post counts' ); ?></label>

		</p>

		<?php

	}

}