<?php

/**

 * Base class for displaying a list of items in an ajaxified HTML table.

 *

 * @since 3.1.0

 * @access private

 */

class WP_List_Table {

	/**

	 *

	 * @since 3.1.0

	 * @var array

	 */

	public $items;

	/**

	 *

	 * @since 3.1.0

	 * @var array

	 */

	protected $_args;

	/**

	 *

	 * @since 3.1.0

	 * @var array

	 */

	protected $_pagination_args = array();

	/**

	 *

	 * @since 3.1.0

	 * @var object

	 */

	protected $screen;

	/**

	 *

	 * @since 3.1.0

	 * @var array

	 */

	private $_actions;

	/**

	 *

	 * @since 3.1.0

	 * @var string

	 */

	private $_pagination;

	/**

	 * The view switcher modes.

	 *

	 * @since 4.1.0

	 * @var array

	 */

	protected $modes = array();

	/**

	 *

	 * @var array

	 */

	protected $_column_headers;

	protected $compat_fields = array( '_args', '_pagination_args', 'screen', '_actions', '_pagination' );

	protected $compat_methods = array( 'set_pagination_args', 'get_views', 'get_bulk_actions', 'bulk_actions',

		'row_actions', 'months_dropdown', 'view_switcher', 'comments_bubble', 'get_items_per_page', 'pagination',

		'get_sortable_columns', 'get_column_info', 'get_table_classes', 'display_tablenav', 'extra_tablenav',

		'single_row_columns' );

	/**

	 * Constructor.

	 *

	 * The child class should call this constructor from its own constructor to override

	 * the default $args.

	 *

	 * @since 3.1.0

	 *

	 * @param array|string $args {

	 *     Array or string of arguments.

	 *

	 *     @type string $plural   Plural value used for labels and the objects being listed.

	 *                            This affects things such as CSS class-names and nonces used

	 *                            in the list table, e.g. 'posts'. Default empty.

	 *     @type string $singular Singular label for an object being listed, e.g. 'post'.

	 *                            Default empty

	 *                            and sorting data, for example. If true, the class will call

	 *     @type string $screen   String containing the hook name used to determine the current

	 *                            screen. If left null, the current screen will be automatically set.

	 *                            Default null.

	 * }

	 */

	public function __construct( $args = array() ) {

		$args = wp_parse_args( $args, array(

			'plural' => '',

			'singular' => '',

			'ajax' => false,

			'screen' => null,

		) );

		$this->screen = convert_to_screen( $args['screen'] );

		add_filter( "manage_{$this->screen->id}_columns", array( $this, 'get_columns' ), 0 );

		if ( !$args['plural'] )

			$args['plural'] = $this->screen->base;

		$args['plural'] = sanitize_key( $args['plural'] );

		$args['singular'] = sanitize_key( $args['singular'] );

		$this->_args = $args;

		if ( $args['ajax'] ) {

			// wp_enqueue_script( 'list-table' );

			add_action( 'admin_footer', array( $this, '_js_vars' ) );

		}

		if ( empty( $this->modes ) ) {

			$this->modes = array(

				'list'    => __( 'List View' ),

				'excerpt' => __( 'Excerpt View' )

			);

		}

	}

	/**

	 *

	 * @since 4.0.0

	 *

	 * @param string $name Property to get.

	 * @return mixed Property.

	 */

	public function __get( $name ) {

		if ( in_array( $name, $this->compat_fields ) ) {

			return $this->$name;

		}

	}

	/**

	 *

	 * @since 4.0.0

	 *

	 * @param string $name  Property to check if set.

	 * @param mixed  $value Property value.

	 * @return mixed Newly-set property.

	 */

	public function __set( $name, $value ) {

		if ( in_array( $name, $this->compat_fields ) ) {

			return $this->$name = $value;

		}

	}

	/**

	 *

	 * @since 4.0.0

	 *

	 * @param string $name Property to check if set.

	 * @return bool Whether the property is set.

	 */

	public function __isset( $name ) {

		if ( in_array( $name, $this->compat_fields ) ) {

			return isset( $this->$name );

		}

	}

	/**

	 *

	 * @since 4.0.0

	 *

	 * @param string $name Property to unset.

	 */

	public function __unset( $name ) {

		if ( in_array( $name, $this->compat_fields ) ) {

			unset( $this->$name );

		}

	}

	/**

	 *

	 * @since 4.0.0

	 *

	 * @param callable $name      Method to call.

	 * @param array    $arguments Arguments to pass when calling.

	 * @return mixed|bool Return value of the callback, false otherwise.

	 */

	public function __call( $name, $arguments ) {

		if ( in_array( $name, $this->compat_methods ) ) {

			return call_user_func_array( array( $this, $name ), $arguments );

		}

		return false;

	}

	/**

	 * Checks the current user's permissions

	 *

	 * @since 3.1.0

	 * @abstract

	 */

	public function ajax_user_can() {

		die( 'function WP_List_Table::ajax_user_can() must be over-ridden in a sub-class.' );

	}

	/**

	 * Prepares the list of items for displaying.

	 * @uses WP_List_Table::set_pagination_args()

	 *

	 * @since 3.1.0

	 * @abstract

	 */

	public function prepare_items() {

		die( 'function WP_List_Table::prepare_items() must be over-ridden in a sub-class.' );

	}

	/**

	 * An internal method that sets all the necessary pagination arguments

	 *

	 */

	protected function set_pagination_args( $args ) {

		$args = wp_parse_args( $args, array(

			'total_items' => 0,

			'total_pages' => 0,

			'per_page' => 0,

		) );

		if ( !$args['total_pages'] && $args['per_page'] > 0 )

			$args['total_pages'] = ceil( $args['total_items'] / $args['per_page'] );

		// Redirect if page number is invalid and headers are not already sent.

			wp_redirect( add_query_arg( 'paged', $args['total_pages'] ) );

			exit;

		}

		$this->_pagination_args = $args;

	}

	/**

	 * Access the pagination args.

	 *

	 * @since 3.1.0

	 *

	 * @param string $key Pagination argument to retrieve. Common values include 'total_items',

	 *                    'total_pages', 'per_page', or 'infinite_scroll'.

	 * @return int Number of items that correspond to the given pagination argument.

	 */

	public function get_pagination_arg( $key ) {

			return $this->get_pagenum();

			return $this->_pagination_args[$key];

	}

	/**

	 * Whether the table has items to display or not

	 *

	 * @since 3.1.0

	 *

	 * @return bool

	 */

	public function has_items() {

		return !empty( $this->items );

	}

	/**

	 * Message to be displayed when there are no items

	 *

	 * @since 3.1.0

	 */

	public function no_items() {

		_e( 'No items found.' );

	}

	/**

	 *

	 * @since 3.1.0

	 *

	 */

	public function search_box( $text, $input_id ) {

		if ( empty( $_REQUEST['s'] ) && !$this->has_items() )

			return;

		$input_id = $input_id . '-search-input';

		if ( ! empty( $_REQUEST['orderby'] ) )

			echo '<input type="hidden" name="orderby" value="' . esc_attr( $_REQUEST['orderby'] ) . '" />';

		if ( ! empty( $_REQUEST['order'] ) )

			echo '<input type="hidden" name="order" value="' . esc_attr( $_REQUEST['order'] ) . '" />';

		if ( ! empty( $_REQUEST['post_mime_type'] ) )

			echo '<input type="hidden" name="post_mime_type" value="' . esc_attr( $_REQUEST['post_mime_type'] ) . '" />';

		if ( ! empty( $_REQUEST['detached'] ) )

			echo '<input type="hidden" name="detached" value="' . esc_attr( $_REQUEST['detached'] ) . '" />';

?>

<p class="search-box">

</p>

<?php

	}

	/**

	 * Get an associative array ( id => link ) with the list

	 * of views available on this table.

	 *

	 * @since 3.1.0

	 *

	 * @return array

	 */

	protected function get_views() {

		return array();

	}

	/**

	 * Display the list of views available on this table.

	 *

	 * @since 3.1.0

	 */

	public function views() {

		$views = $this->get_views();

		/**

		 *

		 * The dynamic portion of the hook name, `$this->screen->id`, refers

		 * to the ID of the current screen, usually a string.

		 *

		 * @since 3.5.0

		 *

		 * @param array $views An array of available list table views.

		 */

		$views = apply_filters( "views_{$this->screen->id}", $views );

		if ( empty( $views ) )

			return;

		echo "<ul class='subsubsub'>\n";

		foreach ( $views as $class => $view ) {

			$views[ $class ] = "\t<li class='$class'>$view";

		}

		echo implode( " |</li>\n", $views ) . "</li>\n";

		echo "</ul>";

	}

	/**

	 * Get an associative array ( option_name => option_title ) with the list

	 * of bulk actions available on this table.

	 *

	 * @since 3.1.0

	 *

	 * @return array

	 */

	protected function get_bulk_actions() {

		return array();

	}

	/**

	 * Display the bulk actions dropdown.

	 *

	 * @since 3.1.0

	 *

	 * @param string $which The location of the bulk actions: 'top' or 'bottom'.

	 */

	protected function bulk_actions( $which = '' ) {

		if ( is_null( $this->_actions ) ) {

			/**

			 *

			 * The dynamic portion of the hook name, `$this->screen->id`, refers

			 * to the ID of the current screen, usually a string.

			 *

			 * This filter can currently only be used to remove bulk actions.

			 *

			 * @since 3.5.0

			 *

			 * @param array $actions An array of the available bulk actions.

			 */

			$this->_actions = apply_filters( "bulk_actions-{$this->screen->id}", $this->_actions );

			$two = '';

		} else {

			$two = '2';