<?php

/**

 * List Table API: WP_Media_List_Table class

 *

 * @package WordPress

 * @subpackage Administration

 * @since 3.1.0

 */

/**

 * Core class used to implement displaying media items in a list table.

 *

 * @since 3.1.0

 *

 * @see WP_List_Table

 */

class WP_Media_List_Table extends WP_List_Table {

	/**

	 * Holds the number of pending comments for each post.

	 *

	 * @since 4.4.0

	 * @var array

	 */

	protected $comment_pending_count = array();

	private $detached;

	private $is_trash;

	/**

	 * Constructor.

	 *

	 * @since 3.1.0

	 *

	 * @see WP_List_Table::__construct() for more information on default arguments.

	 *

	 * @param array $args An associative array of arguments.

	 */

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

		$this->detached = ( isset( $_REQUEST['attachment-filter'] ) && 'detached' === $_REQUEST['attachment-filter'] );

		$this->modes = array(

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

			'grid' => __( 'Grid view' ),

		);

		parent::__construct(

			array(

				'plural' => 'media',

				'screen' => isset( $args['screen'] ) ? $args['screen'] : null,

			)

		);

	}

	/**

	 * @return bool

	 */

	public function ajax_user_can() {

		return current_user_can( 'upload_files' );

	}

	/**

	 * @global string   $mode                  List table view mode.

	 * @global WP_Query $wp_query              WordPress Query object.

	 * @global array    $post_mime_types

	 * @global array    $avail_post_mime_types

	 */

	public function prepare_items() {

		global $mode, $wp_query, $post_mime_types, $avail_post_mime_types;

		$mode = empty( $_REQUEST['mode'] ) ? 'list' : $_REQUEST['mode'];

		/*

		 * Exclude attachments scheduled for deletion in the next two hours

		 * if they are for zip packages for interrupted or failed updates.

		 * See File_Upload_Upgrader class.

		 */

		$not_in = array();

		$crons = _get_cron_array();

		if ( is_array( $crons ) ) {

			foreach ( $crons as $cron ) {

				if ( isset( $cron['upgrader_scheduled_cleanup'] ) ) {

					$details = reset( $cron['upgrader_scheduled_cleanup'] );

					if ( ! empty( $details['args'][0] ) ) {

						$not_in[] = (int) $details['args'][0];

					}

				}

			}

		}

		if ( ! empty( $_REQUEST['post__not_in'] ) && is_array( $_REQUEST['post__not_in'] ) ) {

			$not_in = array_merge( array_values( $_REQUEST['post__not_in'] ), $not_in );

		}

		if ( ! empty( $not_in ) ) {

			$_REQUEST['post__not_in'] = $not_in;

		}

		list( $post_mime_types, $avail_post_mime_types ) = wp_edit_attachments_query( $_REQUEST );

		$this->is_trash = isset( $_REQUEST['attachment-filter'] ) && 'trash' === $_REQUEST['attachment-filter'];

		$this->set_pagination_args(

			array(

				'total_items' => $wp_query->found_posts,

				'total_pages' => $wp_query->max_num_pages,

				'per_page'    => $wp_query->query_vars['posts_per_page'],

			)

		);

	}

	/**

	 * @global array $post_mime_types

	 * @global array $avail_post_mime_types

	 * @return array

	 */

	protected function get_views() {

		global $post_mime_types, $avail_post_mime_types;

		$type_links = array();

		$filter = empty( $_GET['attachment-filter'] ) ? '' : $_GET['attachment-filter'];

		$type_links['all'] = sprintf(

			'<option value=""%s>%s</option>',

			selected( $filter, true, false ),

			__( 'All media items' )

		);

		foreach ( $post_mime_types as $mime_type => $label ) {

			if ( ! wp_match_mime_types( $mime_type, $avail_post_mime_types ) ) {

				continue;

			}

			$selected = selected(

					wp_match_mime_types( $mime_type, str_replace( 'post_mime_type:', '', $filter ) ),

				true,

				false

			);

			$type_links[ $mime_type ] = sprintf(

				'<option value="post_mime_type:%s"%s>%s</option>',

				esc_attr( $mime_type ),

				$selected,

				$label[0]

			);

		}

		$type_links['detached'] = '<option value="detached"' . ( $this->detached ? ' selected="selected"' : '' ) . '>' . _x( 'Unattached', 'media items' ) . '</option>';

		$type_links['mine'] = sprintf(

			'<option value="mine"%s>%s</option>',

			selected( 'mine' === $filter, true, false ),

			_x( 'Mine', 'media items' )

		);

		if ( $this->is_trash || ( defined( 'MEDIA_TRASH' ) && MEDIA_TRASH ) ) {

			$type_links['trash'] = sprintf(

				'<option value="trash"%s>%s</option>',

				selected( 'trash' === $filter, true, false ),

				_x( 'Trash', 'attachment filter' )

			);

		}

		return $type_links;

	}

	/**

	 * @return array

	 */

	protected function get_bulk_actions() {

		$actions = array();

		if ( MEDIA_TRASH ) {

			if ( $this->is_trash ) {

				$actions['untrash'] = __( 'Restore' );

				$actions['delete']  = __( 'Delete permanently' );

			} else {

				$actions['trash'] = __( 'Move to Trash' );

			}

		} else {

			$actions['delete'] = __( 'Delete permanently' );

		}

		if ( $this->detached ) {

			$actions['attach'] = __( 'Attach' );

		}

		return $actions;

	}

	/**

	 * @param string $which

	 */

	protected function extra_tablenav( $which ) {

		if ( 'bar' !== $which ) {

			return;

		}

		?>

		<div class="actions">

			<?php

			if ( ! $this->is_trash ) {

				$this->months_dropdown( 'attachment' );

			}

			/** This action is documented in wp-admin/includes/class-wp-posts-list-table.php */

			do_action( 'restrict_manage_posts', $this->screen->post_type, $which );

			submit_button( __( 'Filter' ), '', 'filter_action', false, array( 'id' => 'post-query-submit' ) );

			if ( $this->is_trash && $this->has_items()

				&& current_user_can( 'edit_others_posts' )

			) {

				submit_button( __( 'Empty Trash' ), 'apply', 'delete_all', false );

			}

			?>

		</div>

		<?php

	}

	/**

	 * @return string

	 */

	public function current_action() {

		if ( isset( $_REQUEST['found_post_id'] ) && isset( $_REQUEST['media'] ) ) {

			return 'attach';

		}

		if ( isset( $_REQUEST['parent_post_id'] ) && isset( $_REQUEST['media'] ) ) {

			return 'detach';

		}

		if ( isset( $_REQUEST['delete_all'] ) || isset( $_REQUEST['delete_all2'] ) ) {

			return 'delete_all';

		}

		return parent::current_action();

	}

	/**

	 * @return bool

	 */

	public function has_items() {

		return have_posts();

	}

	/**

	 */

	public function no_items() {

		if ( $this->is_trash ) {

			_e( 'No media files found in Trash.' );

		} else {

			_e( 'No media files found.' );

		}

	}

	/**

	 *

	 * @global string $mode List table view mode.

	 */

	public function views() {

		global $mode;

		$views = $this->get_views();

		$this->screen->render_screen_reader_content( 'heading_views' );

		?>

		<div class="wp-filter">

			<div class="filter-items">

				<?php $this->view_switcher( $mode ); ?>

				<select class="attachment-filters" name="attachment-filter" id="attachment-filter">

					<?php

					if ( ! empty( $views ) ) {

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

							echo "\t$view\n";

						}

					}

					?>

				</select>

				<?php

				$this->extra_tablenav( 'bar' );

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

				// Back compat for pre-4.0 view links.

				if ( ! empty( $views ) ) {

					echo '<ul class="filter-links">';

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

						echo "<li class='$class'>$view</li>";

					}

					echo '</ul>';

				}

				?>

			</div>

			<div class="search-form">

			</div>

		</div>

		<?php

	}

	/**

	 */

	public function get_columns() {

		$posts_columns       = array();

		$posts_columns['cb'] = '<input type="checkbox" />';

		/* translators: Column name. */

		$posts_columns['title']  = _x( 'File', 'column name' );

		$posts_columns['author'] = __( 'Author' );

		$taxonomies = get_taxonomies_for_attachments( 'objects' );

		$taxonomies = wp_filter_object_list( $taxonomies, array( 'show_admin_column' => true ), 'and', 'name' );

		/**

		 * Filters the taxonomy columns for attachments in the Media list table.

		 *

		 * @since 3.5.0

		 *

		 * @param string[] $taxonomies An array of registered taxonomy names to show for attachments.

		 * @param string   $post_type  The post type. Default 'attachment'.

		 */

		$taxonomies = apply_filters( 'manage_taxonomies_for_attachment_columns', $taxonomies, 'attachment' );

		$taxonomies = array_filter( $taxonomies, 'taxonomy_exists' );

		foreach ( $taxonomies as $taxonomy ) {

			if ( 'category' === $taxonomy ) {

				$column_key = 'categories';

			} elseif ( 'post_tag' === $taxonomy ) {

				$column_key = 'tags';

			} else {

				$column_key = 'taxonomy-' . $taxonomy;

			}

			$posts_columns[ $column_key ] = get_taxonomy( $taxonomy )->labels->name;

		}

		/* translators: Column name. */

		if ( ! $this->detached ) {

			$posts_columns['parent'] = _x( 'Uploaded to', 'column name' );

			if ( post_type_supports( 'attachment', 'comments' ) ) {

			}

		}

		/* translators: Column name. */

		$posts_columns['date'] = _x( 'Date', 'column name' );

		/**

		 * Filters the Media list table columns.

		 *

		 * @since 2.5.0

		 *

		 * @param string[] $posts_columns An array of columns displayed in the Media list table.

		 * @param bool     $detached      Whether the list table contains media not attached

		 *                                to any posts. Default true.

		 */

		return apply_filters( 'manage_media_columns', $posts_columns, $this->detached );

	}

	/**

	 * @return array

	 */

	protected function get_sortable_columns() {

		return array(