wp/wp-admin/includes/class-wp-posts-list-table.php
changeset 7 cf61fcea0001
parent 5 5e2f62d02dcd
child 9 177826044cd9
--- a/wp/wp-admin/includes/class-wp-posts-list-table.php	Tue Jun 09 11:14:17 2015 +0000
+++ b/wp/wp-admin/includes/class-wp-posts-list-table.php	Mon Oct 14 17:39:30 2019 +0200
@@ -1,38 +1,43 @@
 <?php
 /**
- * Posts List Table class.
+ * List Table API: WP_Posts_List_Table class
  *
  * @package WordPress
- * @subpackage List_Table
+ * @subpackage Administration
+ * @since 3.1.0
+ */
+
+/**
+ * Core class used to implement displaying posts in a list table.
+ *
  * @since 3.1.0
  * @access private
+ *
+ * @see WP_List_Table
  */
 class WP_Posts_List_Table extends WP_List_Table {
 
 	/**
-	 * Whether the items should be displayed hierarchically or linearly
+	 * Whether the items should be displayed hierarchically or linearly.
 	 *
 	 * @since 3.1.0
 	 * @var bool
-	 * @access protected
 	 */
 	protected $hierarchical_display;
 
 	/**
-	 * Holds the number of pending comments for each post
+	 * Holds the number of pending comments for each post.
 	 *
 	 * @since 3.1.0
-	 * @var int
-	 * @access protected
+	 * @var array
 	 */
 	protected $comment_pending_count;
 
 	/**
-	 * Holds the number of posts for this user
+	 * Holds the number of posts for this user.
 	 *
 	 * @since 3.1.0
 	 * @var int
-	 * @access private
 	 */
 	private $user_posts_count;
 
@@ -41,20 +46,29 @@
 	 *
 	 * @since 3.1.0
 	 * @var int
-	 * @access private
 	 */
 	private $sticky_posts_count = 0;
 
 	private $is_trash;
 
 	/**
+	 * Current level for output.
+	 *
+	 * @since 4.3.0
+	 * @var int
+	 */
+	protected $current_level = 0;
+
+	/**
 	 * Constructor.
 	 *
 	 * @since 3.1.0
-	 * @access public
 	 *
 	 * @see WP_List_Table::__construct() for more information on default arguments.
 	 *
+	 * @global WP_Post_Type $post_type_object
+	 * @global wpdb         $wpdb
+	 *
 	 * @param array $args An associative array of arguments.
 	 */
 	public function __construct( $args = array() ) {
@@ -65,22 +79,25 @@
 			'screen' => isset( $args['screen'] ) ? $args['screen'] : null,
 		) );
 
-		$post_type = $this->screen->post_type;
+		$post_type        = $this->screen->post_type;
 		$post_type_object = get_post_type_object( $post_type );
 
-		if ( !current_user_can( $post_type_object->cap->edit_others_posts ) ) {
-			$exclude_states = get_post_stati( array( 'show_in_admin_all_list' => false ) );
-			$this->user_posts_count = $wpdb->get_var( $wpdb->prepare( "
-				SELECT COUNT( 1 ) FROM $wpdb->posts
-				WHERE post_type = %s AND post_status NOT IN ( '" . implode( "','", $exclude_states ) . "' )
-				AND post_author = %d
-			", $post_type, get_current_user_id() ) );
+		$exclude_states   = get_post_stati( array(
+			'show_in_admin_all_list' => false,
+		) );
+		$this->user_posts_count = intval( $wpdb->get_var( $wpdb->prepare( "
+			SELECT COUNT( 1 )
+			FROM $wpdb->posts
+			WHERE post_type = %s
+			AND post_status NOT IN ( '" . implode( "','", $exclude_states ) . "' )
+			AND post_author = %d
+		", $post_type, get_current_user_id() ) ) );
 
-			if ( $this->user_posts_count && empty( $_REQUEST['post_status'] ) && empty( $_REQUEST['all_posts'] ) && empty( $_REQUEST['author'] ) && empty( $_REQUEST['show_sticky'] ) )
-				$_GET['author'] = get_current_user_id();
+		if ( $this->user_posts_count && ! current_user_can( $post_type_object->cap->edit_others_posts ) && empty( $_REQUEST['post_status'] ) && empty( $_REQUEST['all_posts'] ) && empty( $_REQUEST['author'] ) && empty( $_REQUEST['show_sticky'] ) ) {
+			$_GET['author'] = get_current_user_id();
 		}
 
-		if ( 'post' == $post_type && $sticky_posts = get_option( 'sticky_posts' ) ) {
+		if ( 'post' === $post_type && $sticky_posts = get_option( 'sticky_posts' ) ) {
 			$sticky_posts = implode( ', ', array_map( 'absint', (array) $sticky_posts ) );
 			$this->sticky_posts_count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT( 1 ) FROM $wpdb->posts WHERE post_type = %s AND post_status NOT IN ('trash', 'auto-draft') AND ID IN ($sticky_posts)", $post_type ) );
 		}
@@ -97,18 +114,28 @@
 		$this->hierarchical_display = $display;
 	}
 
+	/**
+	 *
+	 * @return bool
+	 */
 	public function ajax_user_can() {
 		return current_user_can( get_post_type_object( $this->screen->post_type )->cap->edit_posts );
 	}
 
+	/**
+	 *
+	 * @global array    $avail_post_stati
+	 * @global WP_Query $wp_query
+	 * @global int      $per_page
+	 * @global string   $mode
+	 */
 	public function prepare_items() {
 		global $avail_post_stati, $wp_query, $per_page, $mode;
 
+		// is going to call wp()
 		$avail_post_stati = wp_edit_posts_query();
 
-		$this->set_hierarchical_display( is_post_type_hierarchical( $this->screen->post_type ) && 'menu_order title' == $wp_query->query['orderby'] );
-
-		$total_items = $this->hierarchical_display ? $wp_query->post_count : $wp_query->found_posts;
+		$this->set_hierarchical_display( is_post_type_hierarchical( $this->screen->post_type ) && 'menu_order title' === $wp_query->query['orderby'] );
 
 		$post_type = $this->screen->post_type;
 		$per_page = $this->get_items_per_page( 'edit_' . $post_type . '_per_page' );
@@ -116,33 +143,56 @@
 		/** This filter is documented in wp-admin/includes/post.php */
  		$per_page = apply_filters( 'edit_posts_per_page', $per_page, $post_type );
 
-		if ( $this->hierarchical_display )
-			$total_pages = ceil( $total_items / $per_page );
-		else
-			$total_pages = $wp_query->max_num_pages;
+		if ( $this->hierarchical_display ) {
+			$total_items = $wp_query->post_count;
+		} elseif ( $wp_query->found_posts || $this->get_pagenum() === 1 ) {
+			$total_items = $wp_query->found_posts;
+		} else {
+			$post_counts = (array) wp_count_posts( $post_type, 'readable' );
+
+			if ( isset( $_REQUEST['post_status'] ) && in_array( $_REQUEST['post_status'] , $avail_post_stati ) ) {
+				$total_items = $post_counts[ $_REQUEST['post_status'] ];
+			} elseif ( isset( $_REQUEST['show_sticky'] ) && $_REQUEST['show_sticky'] ) {
+				$total_items = $this->sticky_posts_count;
+			} elseif ( isset( $_GET['author'] ) && $_GET['author'] == get_current_user_id() ) {
+				$total_items = $this->user_posts_count;
+			} else {
+				$total_items = array_sum( $post_counts );
+
+				// Subtract post types that are not included in the admin all list.
+				foreach ( get_post_stati( array( 'show_in_admin_all_list' => false ) ) as $state ) {
+					$total_items -= $post_counts[ $state ];
+				}
+			}
+		}
 
 		if ( ! empty( $_REQUEST['mode'] ) ) {
-			$mode = $_REQUEST['mode'] == 'excerpt' ? 'excerpt' : 'list';
-			set_user_setting ( 'posts_list_mode', $mode );
+			$mode = $_REQUEST['mode'] === 'excerpt' ? 'excerpt' : 'list';
+			set_user_setting( 'posts_list_mode', $mode );
 		} else {
-			$mode = get_user_setting ( 'posts_list_mode', 'list' );
+			$mode = get_user_setting( 'posts_list_mode', 'list' );
 		}
 
-		$this->is_trash = isset( $_REQUEST['post_status'] ) && $_REQUEST['post_status'] == 'trash';
+		$this->is_trash = isset( $_REQUEST['post_status'] ) && $_REQUEST['post_status'] === 'trash';
 
 		$this->set_pagination_args( array(
 			'total_items' => $total_items,
-			'total_pages' => $total_pages,
 			'per_page' => $per_page
 		) );
 	}
 
+	/**
+	 *
+	 * @return bool
+	 */
 	public function has_items() {
 		return have_posts();
 	}
 
+	/**
+	 */
 	public function no_items() {
-		if ( isset( $_REQUEST['post_status'] ) && 'trash' == $_REQUEST['post_status'] )
+		if ( isset( $_REQUEST['post_status'] ) && 'trash' === $_REQUEST['post_status'] )
 			echo get_post_type_object( $this->screen->post_type )->labels->not_found_in_trash;
 		else
 			echo get_post_type_object( $this->screen->post_type )->labels->not_found;
@@ -153,16 +203,61 @@
 	 *
 	 * @since 4.2.0
 	 *
-	 * @return bool Whether the current ivew is the "All" view.
+	 * @return bool Whether the current view is the "All" view.
 	 */
 	protected function is_base_request() {
-		if ( empty( $_GET ) ) {
+		$vars = $_GET;
+		unset( $vars['paged'] );
+
+		if ( empty( $vars ) ) {
 			return true;
-		} elseif ( 1 === count( $_GET ) && ! empty( $_GET['post_type'] ) ) {
-			return $this->screen->post_type === $_GET['post_type'];
+		} elseif ( 1 === count( $vars ) && ! empty( $vars['post_type'] ) ) {
+			return $this->screen->post_type === $vars['post_type'];
 		}
+
+		return 1 === count( $vars ) && ! empty( $vars['mode'] );
 	}
 
+	/**
+	 * Helper to create links to edit.php with params.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param array  $args  URL parameters for the link.
+	 * @param string $label Link text.
+	 * @param string $class Optional. Class attribute. Default empty string.
+	 * @return string The formatted link string.
+	 */
+	protected function get_edit_link( $args, $label, $class = '' ) {
+		$url = add_query_arg( $args, 'edit.php' );
+
+		$class_html = $aria_current = '';
+		if ( ! empty( $class ) ) {
+			 $class_html = sprintf(
+				' class="%s"',
+				esc_attr( $class )
+			);
+
+			if ( 'current' === $class ) {
+				$aria_current = ' aria-current="page"';
+			}
+		}
+
+		return sprintf(
+			'<a href="%s"%s%s>%s</a>',
+			esc_url( $url ),
+			$class_html,
+			$aria_current,
+			$label
+		);
+	}
+
+	/**
+	 *
+	 * @global array $locked_post_status This seems to be deprecated.
+	 * @global array $avail_post_stati
+	 * @return array
+	 */
 	protected function get_views() {
 		global $locked_post_status, $avail_post_stati;
 
@@ -173,27 +268,46 @@
 
 		$status_links = array();
 		$num_posts = wp_count_posts( $post_type, 'readable' );
+		$total_posts = array_sum( (array) $num_posts );
 		$class = '';
-		$allposts = '';
 
 		$current_user_id = get_current_user_id();
+		$all_args = array( 'post_type' => $post_type );
+		$mine = '';
 
-		if ( $this->user_posts_count ) {
-			if ( isset( $_GET['author'] ) && ( $_GET['author'] == $current_user_id ) )
-				$class = ' class="current"';
-			$status_links['mine'] = "<a href='edit.php?post_type=$post_type&author=$current_user_id'$class>" . sprintf( _nx( 'Mine <span class="count">(%s)</span>', 'Mine <span class="count">(%s)</span>', $this->user_posts_count, 'posts' ), number_format_i18n( $this->user_posts_count ) ) . '</a>';
-			$allposts = '&all_posts=1';
+		// Subtract post types that are not included in the admin all list.
+		foreach ( get_post_stati( array( 'show_in_admin_all_list' => false ) ) as $state ) {
+			$total_posts -= $num_posts->$state;
+		}
+
+		if ( $this->user_posts_count && $this->user_posts_count !== $total_posts ) {
+			if ( isset( $_GET['author'] ) && ( $_GET['author'] == $current_user_id ) ) {
+				$class = 'current';
+			}
+
+			$mine_args = array(
+				'post_type' => $post_type,
+				'author' => $current_user_id
+			);
+
+			$mine_inner_html = sprintf(
+				_nx(
+					'Mine <span class="count">(%s)</span>',
+					'Mine <span class="count">(%s)</span>',
+					$this->user_posts_count,
+					'posts'
+				),
+				number_format_i18n( $this->user_posts_count )
+			);
+
+			$mine = $this->get_edit_link( $mine_args, $mine_inner_html, $class );
+
+			$all_args['all_posts'] = 1;
 			$class = '';
 		}
 
-		$total_posts = array_sum( (array) $num_posts );
-
-		// Subtract post types that are not included in the admin all list.
-		foreach ( get_post_stati( array('show_in_admin_all_list' => false) ) as $state )
-			$total_posts -= $num_posts->$state;
-
-		if ( empty( $class ) && $this->is_base_request() && ! $this->user_posts_count ) {
-			$class =  ' class="current"';
+		if ( empty( $class ) && ( $this->is_base_request() || isset( $_REQUEST['all_posts'] ) ) ) {
+			$class = 'current';
 		}
 
 		$all_inner_html = sprintf(
@@ -206,29 +320,58 @@
 			number_format_i18n( $total_posts )
 		);
 
-		$status_links['all'] = "<a href='edit.php?post_type=$post_type{$allposts}'$class>" . $all_inner_html . '</a>';
+		$status_links['all'] = $this->get_edit_link( $all_args, $all_inner_html, $class );
+		if ( $mine ) {
+			$status_links['mine'] = $mine;
+		}
 
 		foreach ( get_post_stati(array('show_in_admin_status_list' => true), 'objects') as $status ) {
 			$class = '';
 
 			$status_name = $status->name;
 
-			if ( !in_array( $status_name, $avail_post_stati ) )
-				continue;
-
-			if ( empty( $num_posts->$status_name ) )
+			if ( ! in_array( $status_name, $avail_post_stati ) || empty( $num_posts->$status_name ) ) {
 				continue;
+			}
 
-			if ( isset($_REQUEST['post_status']) && $status_name == $_REQUEST['post_status'] )
-				$class = ' class="current"';
+			if ( isset($_REQUEST['post_status']) && $status_name === $_REQUEST['post_status'] ) {
+				$class = 'current';
+			}
 
-			$status_links[$status_name] = "<a href='edit.php?post_status=$status_name&amp;post_type=$post_type'$class>" . sprintf( translate_nooped_plural( $status->label_count, $num_posts->$status_name ), number_format_i18n( $num_posts->$status_name ) ) . '</a>';
+			$status_args = array(
+				'post_status' => $status_name,
+				'post_type' => $post_type,
+			);
+
+			$status_label = sprintf(
+				translate_nooped_plural( $status->label_count, $num_posts->$status_name ),
+				number_format_i18n( $num_posts->$status_name )
+			);
+
+			$status_links[ $status_name ] = $this->get_edit_link( $status_args, $status_label, $class );
 		}
 
 		if ( ! empty( $this->sticky_posts_count ) ) {
-			$class = ! empty( $_REQUEST['show_sticky'] ) ? ' class="current"' : '';
+			$class = ! empty( $_REQUEST['show_sticky'] ) ? 'current' : '';
+
+			$sticky_args = array(
+				'post_type'	=> $post_type,
+				'show_sticky' => 1
+			);
 
-			$sticky_link = array( 'sticky' => "<a href='edit.php?post_type=$post_type&amp;show_sticky=1'$class>" . sprintf( _nx( 'Sticky <span class="count">(%s)</span>', 'Sticky <span class="count">(%s)</span>', $this->sticky_posts_count, 'posts' ), number_format_i18n( $this->sticky_posts_count ) ) . '</a>' );
+			$sticky_inner_html = sprintf(
+				_nx(
+					'Sticky <span class="count">(%s)</span>',
+					'Sticky <span class="count">(%s)</span>',
+					$this->sticky_posts_count,
+					'posts'
+				),
+				number_format_i18n( $this->sticky_posts_count )
+			);
+
+			$sticky_link = array(
+				'sticky' => $this->get_edit_link( $sticky_args, $sticky_inner_html, $class )
+			);
 
 			// Sticky comes after Publish, or if not listed, after All.
 			$split = 1 + array_search( ( isset( $status_links['publish'] ) ? 'publish' : 'all' ), array_keys( $status_links ) );
@@ -238,14 +381,20 @@
 		return $status_links;
 	}
 
+	/**
+	 *
+	 * @return array
+	 */
 	protected function get_bulk_actions() {
 		$actions = array();
 		$post_type_obj = get_post_type_object( $this->screen->post_type );
 
-		if ( $this->is_trash ) {
-			$actions['untrash'] = __( 'Restore' );
-		} else {
-			$actions['edit'] = __( 'Edit' );
+		if ( current_user_can( $post_type_obj->cap->edit_posts ) ) {
+			if ( $this->is_trash ) {
+				$actions['untrash'] = __( 'Restore' );
+			} else {
+				$actions['edit'] = __( 'Edit' );
+			}
 		}
 
 		if ( current_user_can( $post_type_obj->cap->delete_posts ) ) {
@@ -260,31 +409,56 @@
 	}
 
 	/**
-	 * @global int $cat
+	 * Displays a categories drop-down for filtering on the Posts list table.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @global int $cat Currently selected category.
+	 *
+	 * @param string $post_type Post type slug.
+	 */
+	protected function categories_dropdown( $post_type ) {
+		global $cat;
+
+		/**
+		 * Filters whether to remove the 'Categories' drop-down from the post list table.
+		 *
+		 * @since 4.6.0
+		 *
+		 * @param bool   $disable   Whether to disable the categories drop-down. Default false.
+		 * @param string $post_type Post type slug.
+		 */
+		if ( false !== apply_filters( 'disable_categories_dropdown', false, $post_type ) ) {
+			return;
+		}
+
+		if ( is_object_in_taxonomy( $post_type, 'category' ) ) {
+			$dropdown_options = array(
+				'show_option_all' => get_taxonomy( 'category' )->labels->all_items,
+				'hide_empty' => 0,
+				'hierarchical' => 1,
+				'show_count' => 0,
+				'orderby' => 'name',
+				'selected' => $cat
+			);
+
+			echo '<label class="screen-reader-text" for="cat">' . __( 'Filter by category' ) . '</label>';
+			wp_dropdown_categories( $dropdown_options );
+		}
+	}
+
+	/**
 	 * @param string $which
 	 */
 	protected function extra_tablenav( $which ) {
-		global $cat;
 ?>
 		<div class="alignleft actions">
 <?php
-		if ( 'top' == $which && !is_singular() ) {
+		if ( 'top' === $which && !is_singular() ) {
+			ob_start();
 
 			$this->months_dropdown( $this->screen->post_type );
-
-			if ( is_object_in_taxonomy( $this->screen->post_type, 'category' ) ) {
-				$dropdown_options = array(
-					'show_option_all' => __( 'All categories' ),
-					'hide_empty' => 0,
-					'hierarchical' => 1,
-					'show_count' => 0,
-					'orderby' => 'name',
-					'selected' => $cat
-				);
-
-				echo '<label class="screen-reader-text" for="cat">' . __( 'Filter by category' ) . '</label>';
-				wp_dropdown_categories( $dropdown_options );
-			}
+			$this->categories_dropdown( $this->screen->post_type );
 
 			/**
 			 * Fires before the Filter button on the Posts and Pages list tables.
@@ -293,20 +467,45 @@
 			 * Posts list table, and sorting by date on the Pages list table.
 			 *
 			 * @since 2.1.0
+			 * @since 4.4.0 The `$post_type` parameter was added.
+			 * @since 4.6.0 The `$which` parameter was added.
+			 *
+			 * @param string $post_type The post type slug.
+			 * @param string $which     The location of the extra table nav markup:
+			 *                          'top' or 'bottom' for WP_Posts_List_Table,
+			 *                          'bar' for WP_Media_List_Table.
 			 */
-			do_action( 'restrict_manage_posts' );
+			do_action( 'restrict_manage_posts', $this->screen->post_type, $which );
+
+			$output = ob_get_clean();
 
-			submit_button( __( 'Filter' ), 'button', 'filter_action', false, array( 'id' => 'post-query-submit' ) );
+			if ( ! empty( $output ) ) {
+				echo $output;
+				submit_button( __( 'Filter' ), '', 'filter_action', false, array( 'id' => 'post-query-submit' ) );
+			}
 		}
 
-		if ( $this->is_trash && current_user_can( get_post_type_object( $this->screen->post_type )->cap->edit_others_posts ) ) {
+		if ( $this->is_trash && current_user_can( get_post_type_object( $this->screen->post_type )->cap->edit_others_posts ) && $this->has_items() ) {
 			submit_button( __( 'Empty Trash' ), 'apply', 'delete_all', false );
 		}
 ?>
 		</div>
 <?php
+		/**
+		 * Fires immediately following the closing "actions" div in the tablenav for the posts
+		 * list table.
+		 *
+		 * @since 4.4.0
+		 *
+		 * @param string $which The location of the extra table nav markup: 'top' or 'bottom'.
+		 */
+		do_action( 'manage_posts_extra_tablenav', $which );
 	}
 
+	/**
+	 *
+	 * @return string
+	 */
 	public function current_action() {
 		if ( isset( $_REQUEST['delete_all'] ) || isset( $_REQUEST['delete_all2'] ) )
 			return 'delete_all';
@@ -315,22 +514,17 @@
 	}
 
 	/**
-	 * @global string $mode
-	 * @param string $which
+	 *
+	 * @return array
 	 */
-	protected function pagination( $which ) {
-		global $mode;
-
-		parent::pagination( $which );
-
-		if ( 'top' == $which && ! is_post_type_hierarchical( $this->screen->post_type ) )
-			$this->view_switcher( $mode );
-	}
-
 	protected function get_table_classes() {
 		return array( 'widefat', 'fixed', 'striped', is_post_type_hierarchical( $this->screen->post_type ) ? 'pages' : 'posts' );
 	}
 
+	/**
+	 *
+	 * @return array
+	 */
 	public function get_columns() {
 		$post_type = $this->screen->post_type;
 
@@ -349,7 +543,7 @@
 		$taxonomies = wp_filter_object_list( $taxonomies, array( 'show_admin_column' => true ), 'and', 'name' );
 
 		/**
-		 * Filter the taxonomy columns in the Posts list table.
+		 * Filters the taxonomy columns in the Posts list table.
 		 *
 		 * The dynamic portion of the hook name, `$post_type`, refers to the post
 		 * type slug.
@@ -363,9 +557,9 @@
 		$taxonomies = array_filter( $taxonomies, 'taxonomy_exists' );
 
 		foreach ( $taxonomies as $taxonomy ) {
-			if ( 'category' == $taxonomy )
+			if ( 'category' === $taxonomy )
 				$column_key = 'categories';
-			elseif ( 'post_tag' == $taxonomy )
+			elseif ( 'post_tag' === $taxonomy )
 				$column_key = 'tags';
 			else
 				$column_key = 'taxonomy-' . $taxonomy;
@@ -379,10 +573,10 @@
 
 		$posts_columns['date'] = __( 'Date' );
 
-		if ( 'page' == $post_type ) {
+		if ( 'page' === $post_type ) {
 
 			/**
-			 * Filter the columns displayed in the Pages list table.
+			 * Filters the columns displayed in the Pages list table.
 			 *
 			 * @since 2.5.0
 			 *
@@ -392,7 +586,7 @@
 		} else {
 
 			/**
-			 * Filter the columns displayed in the Posts list table.
+			 * Filters the columns displayed in the Posts list table.
 			 *
 			 * @since 1.5.0
 			 *
@@ -403,7 +597,7 @@
 		}
 
 		/**
-		 * Filter the columns displayed in the Posts list table for a specific post type.
+		 * Filters the columns displayed in the Posts list table for a specific post type.
 		 *
 		 * The dynamic portion of the hook name, `$post_type`, refers to the post type slug.
 		 *
@@ -411,11 +605,13 @@
 		 *
 		 * @param array $post_columns An array of column names.
 		 */
-		$posts_columns = apply_filters( "manage_{$post_type}_posts_columns", $posts_columns );
-
-		return $posts_columns;
+		return apply_filters( "manage_{$post_type}_posts_columns", $posts_columns );
 	}
 
+	/**
+	 *
+	 * @return array
+	 */
 	protected function get_sortable_columns() {
 		return array(
 			'title'    => 'title',
@@ -447,13 +643,10 @@
 	}
 
 	/**
-	 * @global string $mode
 	 * @param array $posts
 	 * @param int $level
 	 */
 	private function _display_rows( $posts, $level = 0 ) {
-		global $mode;
-
 		// Create array of post IDs.
 		$post_ids = array();
 
@@ -467,11 +660,11 @@
 	}
 
 	/**
-	 * @global wpdb $wpdb
+	 * @global wpdb    $wpdb
+	 * @global WP_Post $post
 	 * @param array $pages
 	 * @param int $pagenum
 	 * @param int $per_page
-	 * @return false|null
 	 */
 	private function _display_rows_hierarchical( $pages, $pagenum = 1, $per_page = 20 ) {
 		global $wpdb;
@@ -482,7 +675,7 @@
 			$pages = get_pages( array( 'sort_column' => 'menu_order' ) );
 
 			if ( ! $pages )
-				return false;
+				return;
 		}
 
 		/*
@@ -579,7 +772,6 @@
 	 * @param array $to_display List of pages to be displayed. Passed by reference.
 	 */
 	private function _page_rows( &$children_pages, &$count, $parent, $level, $pagenum, $per_page, &$to_display ) {
-
 		if ( ! isset( $children_pages[$parent] ) )
 			return;
 
@@ -587,7 +779,6 @@
 		$end = $start + $per_page;
 
 		foreach ( $children_pages[$parent] as $page ) {
-
 			if ( $count >= $end )
 				break;
 
@@ -628,31 +819,369 @@
 	}
 
 	/**
-	 * @global string $mode
+	 * Handles the checkbox column output.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @param WP_Post $post The current WP_Post object.
+	 */
+	public function column_cb( $post ) {
+		if ( current_user_can( 'edit_post', $post->ID ) ): ?>
+			<label class="screen-reader-text" for="cb-select-<?php the_ID(); ?>"><?php
+				printf( __( 'Select %s' ), _draft_or_post_title() );
+			?></label>
+			<input id="cb-select-<?php the_ID(); ?>" type="checkbox" name="post[]" value="<?php the_ID(); ?>" />
+			<div class="locked-indicator">
+				<span class="locked-indicator-icon" aria-hidden="true"></span>
+				<span class="screen-reader-text"><?php
+				printf(
+					/* translators: %s: post title */
+					__( '&#8220;%s&#8221; is locked' ),
+					_draft_or_post_title()
+				);
+				?></span>
+			</div>
+		<?php endif;
+	}
+
+	/**
+	 * @since 4.3.0
+	 *
 	 * @param WP_Post $post
-	 * @param int $level
+	 * @param string  $classes
+	 * @param string  $data
+	 * @param string  $primary
+	 */
+	protected function _column_title( $post, $classes, $data, $primary ) {
+		echo '<td class="' . $classes . ' page-title" ', $data, '>';
+		echo $this->column_title( $post );
+		echo $this->handle_row_actions( $post, 'title', $primary );
+		echo '</td>';
+	}
+
+	/**
+	 * Handles the title column output.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @global string $mode List table view mode.
+	 *
+	 * @param WP_Post $post The current WP_Post object.
+	 */
+	public function column_title( $post ) {
+		global $mode;
+
+		if ( $this->hierarchical_display ) {
+			if ( 0 === $this->current_level && (int) $post->post_parent > 0 ) {
+				// Sent level 0 by accident, by default, or because we don't know the actual level.
+				$find_main_page = (int) $post->post_parent;
+				while ( $find_main_page > 0 ) {
+					$parent = get_post( $find_main_page );
+
+					if ( is_null( $parent ) ) {
+						break;
+					}
+
+					$this->current_level++;
+					$find_main_page = (int) $parent->post_parent;
+
+					if ( ! isset( $parent_name ) ) {
+						/** This filter is documented in wp-includes/post-template.php */
+						$parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID );
+					}
+				}
+			}
+		}
+
+		$can_edit_post = current_user_can( 'edit_post', $post->ID );
+
+		if ( $can_edit_post && $post->post_status != 'trash' ) {
+			$lock_holder = wp_check_post_lock( $post->ID );
+
+			if ( $lock_holder ) {
+				$lock_holder = get_userdata( $lock_holder );
+				$locked_avatar = get_avatar( $lock_holder->ID, 18 );
+				$locked_text = esc_html( sprintf( __( '%s is currently editing' ), $lock_holder->display_name ) );
+			} else {
+				$locked_avatar = $locked_text = '';
+			}
+
+			echo '<div class="locked-info"><span class="locked-avatar">' . $locked_avatar . '</span> <span class="locked-text">' . $locked_text . "</span></div>\n";
+		}
+
+		$pad = str_repeat( '&#8212; ', $this->current_level );
+		echo "<strong>";
+
+		$format = get_post_format( $post->ID );
+		if ( $format ) {
+			$label = get_post_format_string( $format );
+
+			$format_class = 'post-state-format post-format-icon post-format-' . $format;
+
+			$format_args = array(
+				'post_format' => $format,
+				'post_type' => $post->post_type
+			);
+
+			echo $this->get_edit_link( $format_args, $label . ':', $format_class );
+		}
+
+		$title = _draft_or_post_title();
+
+		if ( $can_edit_post && $post->post_status != 'trash' ) {
+			printf(
+				'<a class="row-title" href="%s" aria-label="%s">%s%s</a>',
+				get_edit_post_link( $post->ID ),
+				/* translators: %s: post title */
+				esc_attr( sprintf( __( '&#8220;%s&#8221; (Edit)' ), $title ) ),
+				$pad,
+				$title
+			);
+		} else {
+			echo $pad . $title;
+		}
+		_post_states( $post );
+
+		if ( isset( $parent_name ) ) {
+			$post_type_object = get_post_type_object( $post->post_type );
+			echo ' | ' . $post_type_object->labels->parent_item_colon . ' ' . esc_html( $parent_name );
+		}
+		echo "</strong>\n";
+
+		if ( ! is_post_type_hierarchical( $this->screen->post_type ) && 'excerpt' === $mode && current_user_can( 'read_post', $post->ID ) ) {
+			if ( post_password_required( $post ) ) {
+				echo '<span class="protected-post-excerpt">' . esc_html( get_the_excerpt() ) . '</span>';
+			} else {
+				echo esc_html( get_the_excerpt() );
+			}
+		}
+
+		get_inline_data( $post );
+	}
+
+	/**
+	 * Handles the post date column output.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @global string $mode List table view mode.
+	 *
+	 * @param WP_Post $post The current WP_Post object.
+	 */
+	public function column_date( $post ) {
+		global $mode;
+
+		if ( '0000-00-00 00:00:00' === $post->post_date ) {
+			$t_time = $h_time = __( 'Unpublished' );
+			$time_diff = 0;
+		} else {
+			$t_time = get_the_time( __( 'Y/m/d g:i:s a' ) );
+			$m_time = $post->post_date;
+			$time = get_post_time( 'G', true, $post );
+
+			$time_diff = time() - $time;
+
+			if ( $time_diff > 0 && $time_diff < DAY_IN_SECONDS ) {
+				$h_time = sprintf( __( '%s ago' ), human_time_diff( $time ) );
+			} else {
+				$h_time = mysql2date( __( 'Y/m/d' ), $m_time );
+			}
+		}
+
+		if ( 'publish' === $post->post_status ) {
+			$status = __( 'Published' );
+		} elseif ( 'future' === $post->post_status ) {
+			if ( $time_diff > 0 ) {
+				$status = '<strong class="error-message">' . __( 'Missed schedule' ) . '</strong>';
+			} else {
+				$status = __( 'Scheduled' );
+			}
+		} else {
+			$status = __( 'Last Modified' );
+		}
+
+		/**
+		 * Filters the status text of the post.
+		 *
+		 * @since 4.8.0
+		 *
+		 * @param string  $status      The status text.
+		 * @param WP_Post $post        Post object.
+		 * @param string  $column_name The column name.
+		 * @param string  $mode        The list display mode ('excerpt' or 'list').
+		 */
+		$status = apply_filters( 'post_date_column_status', $status, $post, 'date', $mode );
+
+		if ( $status ) {
+			echo $status . '<br />';
+		}
+
+		if ( 'excerpt' === $mode ) {
+			/**
+			 * Filters the published time of the post.
+			 *
+			 * If `$mode` equals 'excerpt', the published time and date are both displayed.
+			 * If `$mode` equals 'list' (default), the publish date is displayed, with the
+			 * time and date together available as an abbreviation definition.
+			 *
+			 * @since 2.5.1
+			 *
+			 * @param string  $t_time      The published time.
+			 * @param WP_Post $post        Post object.
+			 * @param string  $column_name The column name.
+			 * @param string  $mode        The list display mode ('excerpt' or 'list').
+			 */
+			echo apply_filters( 'post_date_column_time', $t_time, $post, 'date', $mode );
+		} else {
+
+			/** This filter is documented in wp-admin/includes/class-wp-posts-list-table.php */
+			echo '<abbr title="' . $t_time . '">' . apply_filters( 'post_date_column_time', $h_time, $post, 'date', $mode ) . '</abbr>';
+		}
+	}
+
+	/**
+	 * Handles the comments column output.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @param WP_Post $post The current WP_Post object.
+	 */
+	public function column_comments( $post ) {
+		?>
+		<div class="post-com-count-wrapper">
+		<?php
+			$pending_comments = isset( $this->comment_pending_count[$post->ID] ) ? $this->comment_pending_count[$post->ID] : 0;
+
+			$this->comments_bubble( $post->ID, $pending_comments );
+		?>
+		</div>
+		<?php
+	}
+
+	/**
+	 * Handles the post author column output.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @param WP_Post $post The current WP_Post object.
+	 */
+	public function column_author( $post ) {
+		$args = array(
+			'post_type' => $post->post_type,
+			'author' => get_the_author_meta( 'ID' )
+		);
+		echo $this->get_edit_link( $args, get_the_author() );
+	}
+
+	/**
+	 * Handles the default column output.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @param WP_Post $post        The current WP_Post object.
+	 * @param string  $column_name The current column name.
+	 */
+	public function column_default( $post, $column_name ) {
+		if ( 'categories' === $column_name ) {
+			$taxonomy = 'category';
+		} elseif ( 'tags' === $column_name ) {
+			$taxonomy = 'post_tag';
+		} elseif ( 0 === strpos( $column_name, 'taxonomy-' ) ) {
+			$taxonomy = substr( $column_name, 9 );
+		} else {
+			$taxonomy = false;
+		}
+		if ( $taxonomy ) {
+			$taxonomy_object = get_taxonomy( $taxonomy );
+			$terms = get_the_terms( $post->ID, $taxonomy );
+			if ( is_array( $terms ) ) {
+				$out = array();
+				foreach ( $terms as $t ) {
+					$posts_in_term_qv = array();
+					if ( 'post' != $post->post_type ) {
+						$posts_in_term_qv['post_type'] = $post->post_type;
+					}
+					if ( $taxonomy_object->query_var ) {
+						$posts_in_term_qv[ $taxonomy_object->query_var ] = $t->slug;
+					} else {
+						$posts_in_term_qv['taxonomy'] = $taxonomy;
+						$posts_in_term_qv['term'] = $t->slug;
+					}
+
+					$label = esc_html( sanitize_term_field( 'name', $t->name, $t->term_id, $taxonomy, 'display' ) );
+					$out[] = $this->get_edit_link( $posts_in_term_qv, $label );
+				}
+				/* translators: used between list items, there is a space after the comma */
+				echo join( __( ', ' ), $out );
+			} else {
+				echo '<span aria-hidden="true">&#8212;</span><span class="screen-reader-text">' . $taxonomy_object->labels->no_terms . '</span>';
+			}
+			return;
+		}
+
+		if ( is_post_type_hierarchical( $post->post_type ) ) {
+
+			/**
+			 * Fires in each custom column on the Posts list table.
+			 *
+			 * This hook only fires if the current post type is hierarchical,
+			 * such as pages.
+			 *
+			 * @since 2.5.0
+			 *
+			 * @param string $column_name The name of the column to display.
+			 * @param int    $post_id     The current post ID.
+			 */
+			do_action( 'manage_pages_custom_column', $column_name, $post->ID );
+		} else {
+
+			/**
+			 * Fires in each custom column in the Posts list table.
+			 *
+			 * This hook only fires if the current post type is non-hierarchical,
+			 * such as posts.
+			 *
+			 * @since 1.5.0
+			 *
+			 * @param string $column_name The name of the column to display.
+			 * @param int    $post_id     The current post ID.
+			 */
+			do_action( 'manage_posts_custom_column', $column_name, $post->ID );
+		}
+
+		/**
+		 * Fires for each custom column of a specific post type in the Posts list table.
+		 *
+		 * The dynamic portion of the hook name, `$post->post_type`, refers to the post type.
+		 *
+		 * @since 3.1.0
+		 *
+		 * @param string $column_name The name of the column to display.
+		 * @param int    $post_id     The current post ID.
+		 */
+		do_action( "manage_{$post->post_type}_posts_custom_column", $column_name, $post->ID );
+	}
+
+	/**
+	 * @global WP_Post $post
+	 *
+	 * @param int|WP_Post $post
+	 * @param int         $level
 	 */
 	public function single_row( $post, $level = 0 ) {
-		global $mode;
-
 		$global_post = get_post();
 
 		$post = get_post( $post );
+		$this->current_level = $level;
 
 		$GLOBALS['post'] = $post;
 		setup_postdata( $post );
 
-		$edit_link = get_edit_post_link( $post->ID );
-		$title = _draft_or_post_title();
-		$post_type_object = get_post_type_object( $post->post_type );
-		$can_edit_post = current_user_can( 'edit_post', $post->ID );
-
 		$classes = 'iedit author-' . ( get_current_user_id() == $post->post_author ? 'self' : 'other' );
 
 		$lock_holder = wp_check_post_lock( $post->ID );
 		if ( $lock_holder ) {
 			$classes .= ' wp-locked';
-			$lock_holder = get_userdata( $lock_holder );
 		}
 
 		if ( $post->post_parent ) {
@@ -663,334 +1192,152 @@
 		}
 	?>
 		<tr id="post-<?php echo $post->ID; ?>" class="<?php echo implode( ' ', get_post_class( $classes, $post->ID ) ); ?>">
-	<?php
-
-		list( $columns, $hidden ) = $this->get_column_info();
-
-		foreach ( $columns as $column_name => $column_display_name ) {
-			$class = "class=\"$column_name column-$column_name\"";
-
-			$style = '';
-			if ( in_array( $column_name, $hidden ) )
-				$style = ' style="display:none;"';
-
-			$attributes = "$class$style";
-
-			switch ( $column_name ) {
-
-			case 'cb':
-			?>
-			<th scope="row" class="check-column">
-				<?php
-				if ( $can_edit_post ) {
-
-				?>
-				<label class="screen-reader-text" for="cb-select-<?php the_ID(); ?>"><?php printf( __( 'Select %s' ), $title ); ?></label>
-				<input id="cb-select-<?php the_ID(); ?>" type="checkbox" name="post[]" value="<?php the_ID(); ?>" />
-				<div class="locked-indicator"></div>
-				<?php
-				}
-				?>
-			</th>
-			<?php
-			break;
-
-			case 'title':
-				$attributes = 'class="post-title page-title column-title"' . $style;
-				if ( $this->hierarchical_display ) {
-					if ( 0 == $level && (int) $post->post_parent > 0 ) {
-						// Sent level 0 by accident, by default, or because we don't know the actual level.
-						$find_main_page = (int) $post->post_parent;
-						while ( $find_main_page > 0 ) {
-							$parent = get_post( $find_main_page );
-
-							if ( is_null( $parent ) )
-								break;
-
-							$level++;
-							$find_main_page = (int) $parent->post_parent;
-
-							if ( !isset( $parent_name ) ) {
-								/** This filter is documented in wp-includes/post-template.php */
-								$parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID );
-							}
-						}
-					}
-				}
-
-				$pad = str_repeat( '&#8212; ', $level );
-				echo "<td $attributes><strong>";
-
-				if ( $format = get_post_format( $post->ID ) ) {
-					$label = get_post_format_string( $format );
-
-					echo '<a href="' . esc_url( add_query_arg( array( 'post_format' => $format, 'post_type' => $post->post_type ), 'edit.php' ) ) . '" class="post-state-format post-format-icon post-format-' . $format . '" title="' . $label . '">' . $label . ":</a> ";
-				}
-
-				if ( $can_edit_post && $post->post_status != 'trash' ) {
-					echo '<a class="row-title" href="' . $edit_link . '" title="' . esc_attr( sprintf( __( 'Edit &#8220;%s&#8221;' ), $title ) ) . '">' . $pad . $title . '</a>';
-				} else {
-					echo $pad . $title;
-				}
-				_post_states( $post );
-
-				if ( isset( $parent_name ) )
-					echo ' | ' . $post_type_object->labels->parent_item_colon . ' ' . esc_html( $parent_name );
-
-				echo "</strong>\n";
-
-				if ( $can_edit_post && $post->post_status != 'trash' ) {
-					if ( $lock_holder ) {
-						$locked_avatar = get_avatar( $lock_holder->ID, 18 );
-						$locked_text = esc_html( sprintf( __( '%s is currently editing' ), $lock_holder->display_name ) );
-					} else {
-						$locked_avatar = $locked_text = '';
-					}
-
-					echo '<div class="locked-info"><span class="locked-avatar">' . $locked_avatar . '</span> <span class="locked-text">' . $locked_text . "</span></div>\n";
-				}
-
-				if ( ! $this->hierarchical_display && 'excerpt' == $mode && current_user_can( 'read_post', $post->ID ) )
-						the_excerpt();
-
-				$actions = array();
-				if ( $can_edit_post && 'trash' != $post->post_status ) {
-					$actions['edit'] = '<a href="' . get_edit_post_link( $post->ID ) . '" title="' . esc_attr__( 'Edit this item' ) . '">' . __( 'Edit' ) . '</a>';
-					$actions['inline hide-if-no-js'] = '<a href="#" class="editinline" title="' . esc_attr__( 'Edit this item inline' ) . '">' . __( 'Quick&nbsp;Edit' ) . '</a>';
-				}
-				if ( current_user_can( 'delete_post', $post->ID ) ) {
-					if ( 'trash' == $post->post_status )
-						$actions['untrash'] = "<a title='" . esc_attr__( 'Restore this item from the Trash' ) . "' href='" . wp_nonce_url( admin_url( sprintf( $post_type_object->_edit_link . '&amp;action=untrash', $post->ID ) ), 'untrash-post_' . $post->ID ) . "'>" . __( 'Restore' ) . "</a>";
-					elseif ( EMPTY_TRASH_DAYS )
-						$actions['trash'] = "<a class='submitdelete' title='" . esc_attr__( 'Move this item to the Trash' ) . "' href='" . get_delete_post_link( $post->ID ) . "'>" . __( 'Trash' ) . "</a>";
-					if ( 'trash' == $post->post_status || !EMPTY_TRASH_DAYS )
-						$actions['delete'] = "<a class='submitdelete' title='" . esc_attr__( 'Delete this item permanently' ) . "' href='" . get_delete_post_link( $post->ID, '', true ) . "'>" . __( 'Delete Permanently' ) . "</a>";
-				}
-				if ( $post_type_object->public ) {
-					if ( in_array( $post->post_status, array( 'pending', 'draft', 'future' ) ) ) {
-						if ( $can_edit_post ) {
-							$preview_link = set_url_scheme( get_permalink( $post->ID ) );
-							/** This filter is documented in wp-admin/includes/meta-boxes.php */
-							$preview_link = apply_filters( 'preview_post_link', add_query_arg( 'preview', 'true', $preview_link ), $post );
-							$actions['view'] = '<a href="' . esc_url( $preview_link ) . '" title="' . esc_attr( sprintf( __( 'Preview &#8220;%s&#8221;' ), $title ) ) . '" rel="permalink">' . __( 'Preview' ) . '</a>';
-						}
-					} elseif ( 'trash' != $post->post_status ) {
-						$actions['view'] = '<a href="' . get_permalink( $post->ID ) . '" title="' . esc_attr( sprintf( __( 'View &#8220;%s&#8221;' ), $title ) ) . '" rel="permalink">' . __( 'View' ) . '</a>';
-					}
-				}
-
-				if ( is_post_type_hierarchical( $post->post_type ) ) {
-
-					/**
-					 * Filter the array of row action links on the Pages list table.
-					 *
-					 * The filter is evaluated only for hierarchical post types.
-					 *
-					 * @since 2.8.0
-					 *
-					 * @param array   $actions An array of row action links. Defaults are
-					 *                         'Edit', 'Quick Edit', 'Restore, 'Trash',
-					 *                         'Delete Permanently', 'Preview', and 'View'.
-					 * @param WP_Post $post    The post object.
-					 */
-					$actions = apply_filters( 'page_row_actions', $actions, $post );
-				} else {
-
-					/**
-					 * Filter the array of row action links on the Posts list table.
-					 *
-					 * The filter is evaluated only for non-hierarchical post types.
-					 *
-					 * @since 2.8.0
-					 *
-					 * @param array   $actions An array of row action links. Defaults are
-					 *                         'Edit', 'Quick Edit', 'Restore, 'Trash',
-					 *                         'Delete Permanently', 'Preview', and 'View'.
-					 * @param WP_Post $post    The post object.
-					 */
-					$actions = apply_filters( 'post_row_actions', $actions, $post );
-				}
-
-				echo $this->row_actions( $actions );
-
-				get_inline_data( $post );
-				echo '</td>';
-			break;
-
-			case 'date':
-				if ( '0000-00-00 00:00:00' == $post->post_date ) {
-					$t_time = $h_time = __( 'Unpublished' );
-					$time_diff = 0;
-				} else {
-					$t_time = get_the_time( __( 'Y/m/d g:i:s a' ) );
-					$m_time = $post->post_date;
-					$time = get_post_time( 'G', true, $post );
-
-					$time_diff = time() - $time;
-
-					if ( $time_diff > 0 && $time_diff < DAY_IN_SECONDS )
-						$h_time = sprintf( __( '%s ago' ), human_time_diff( $time ) );
-					else
-						$h_time = mysql2date( __( 'Y/m/d' ), $m_time );
-				}
-
-				echo '<td ' . $attributes . '>';
-				if ( 'excerpt' == $mode ) {
-
-					/**
-					 * Filter the published time of the post.
-					 *
-					 * If $mode equals 'excerpt', the published time and date are both displayed.
-					 * If $mode equals 'list' (default), the publish date is displayed, with the
-					 * time and date together available as an abbreviation definition.
-					 *
-					 * @since 2.5.1
-					 *
-					 * @param array   $t_time      The published time.
-					 * @param WP_Post $post        Post object.
-					 * @param string  $column_name The column name.
-					 * @param string  $mode        The list display mode ('excerpt' or 'list').
-					 */
-					echo apply_filters( 'post_date_column_time', $t_time, $post, $column_name, $mode );
-				} else {
-
-					/** This filter is documented in wp-admin/includes/class-wp-posts-list-table.php */
-					echo '<abbr title="' . $t_time . '">' . apply_filters( 'post_date_column_time', $h_time, $post, $column_name, $mode ) . '</abbr>';
-				}
-				echo '<br />';
-				if ( 'publish' == $post->post_status ) {
-					_e( 'Published' );
-				} elseif ( 'future' == $post->post_status ) {
-					if ( $time_diff > 0 )
-						echo '<strong class="attention">' . __( 'Missed schedule' ) . '</strong>';
-					else
-						_e( 'Scheduled' );
-				} else {
-					_e( 'Last Modified' );
-				}
-				echo '</td>';
-			break;
-
-			case 'comments':
-			?>
-			<td <?php echo $attributes ?>><div class="post-com-count-wrapper">
-			<?php
-				$pending_comments = isset( $this->comment_pending_count[$post->ID] ) ? $this->comment_pending_count[$post->ID] : 0;
-
-				$this->comments_bubble( $post->ID, $pending_comments );
-			?>
-			</div></td>
-			<?php
-			break;
-
-			case 'author':
-			?>
-			<td <?php echo $attributes ?>><?php
-				printf( '<a href="%s">%s</a>',
-					esc_url( add_query_arg( array( 'post_type' => $post->post_type, 'author' => get_the_author_meta( 'ID' ) ), 'edit.php' )),
-					get_the_author()
-				);
-			?></td>
-			<?php
-			break;
-
-			default:
-				if ( 'categories' == $column_name )
-					$taxonomy = 'category';
-				elseif ( 'tags' == $column_name )
-					$taxonomy = 'post_tag';
-				elseif ( 0 === strpos( $column_name, 'taxonomy-' ) )
-					$taxonomy = substr( $column_name, 9 );
-				else
-					$taxonomy = false;
-
-				if ( $taxonomy ) {
-					$taxonomy_object = get_taxonomy( $taxonomy );
-					echo '<td ' . $attributes . '>';
-					if ( $terms = get_the_terms( $post->ID, $taxonomy ) ) {
-						$out = array();
-						foreach ( $terms as $t ) {
-							$posts_in_term_qv = array();
-							if ( 'post' != $post->post_type )
-								$posts_in_term_qv['post_type'] = $post->post_type;
-							if ( $taxonomy_object->query_var ) {
-								$posts_in_term_qv[ $taxonomy_object->query_var ] = $t->slug;
-							} else {
-								$posts_in_term_qv['taxonomy'] = $taxonomy;
-								$posts_in_term_qv['term'] = $t->slug;
-							}
-
-							$out[] = sprintf( '<a href="%s">%s</a>',
-								esc_url( add_query_arg( $posts_in_term_qv, 'edit.php' ) ),
-								esc_html( sanitize_term_field( 'name', $t->name, $t->term_id, $taxonomy, 'display' ) )
-							);
-						}
-						/* translators: used between list items, there is a space after the comma */
-						echo join( __( ', ' ), $out );
-					} else {
-						echo '&#8212;';
-					}
-					echo '</td>';
-					break;
-				}
-			?>
-			<td <?php echo $attributes ?>><?php
-				if ( is_post_type_hierarchical( $post->post_type ) ) {
-
-					/**
-					 * Fires in each custom column on the Posts list table.
-					 *
-					 * This hook only fires if the current post type is hierarchical,
-					 * such as pages.
-					 *
-					 * @since 2.5.0
-					 *
-					 * @param string $column_name The name of the column to display.
-					 * @param int    $post_id     The current post ID.
-					 */
-					do_action( 'manage_pages_custom_column', $column_name, $post->ID );
-				} else {
-
-					/**
-					 * Fires in each custom column in the Posts list table.
-					 *
-					 * This hook only fires if the current post type is non-hierarchical,
-					 * such as posts.
-					 *
-					 * @since 1.5.0
-					 *
-					 * @param string $column_name The name of the column to display.
-					 * @param int    $post_id     The current post ID.
-					 */
-					do_action( 'manage_posts_custom_column', $column_name, $post->ID );
-				}
-
-				/**
-				 * Fires for each custom column of a specific post type in the Posts list table.
-				 *
-				 * The dynamic portion of the hook name, `$post->post_type`, refers to the post type.
-				 *
-				 * @since 3.1.0
-				 *
-				 * @param string $column_name The name of the column to display.
-				 * @param int    $post_id     The current post ID.
-				 */
-				do_action( "manage_{$post->post_type}_posts_custom_column", $column_name, $post->ID );
-			?></td>
-			<?php
-			break;
-			}
-		}
-	?>
+			<?php $this->single_row_columns( $post ); ?>
 		</tr>
 	<?php
 		$GLOBALS['post'] = $global_post;
 	}
 
 	/**
+	 * Gets the name of the default primary column.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @return string Name of the default primary column, in this case, 'title'.
+	 */
+	protected function get_default_primary_column_name() {
+		return 'title';
+	}
+
+	/**
+	 * Generates and displays row action links.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @param object $post        Post being acted upon.
+	 * @param string $column_name Current column name.
+	 * @param string $primary     Primary column name.
+	 * @return string Row actions output for posts.
+	 */
+	protected function handle_row_actions( $post, $column_name, $primary ) {
+		if ( $primary !== $column_name ) {
+			return '';
+		}
+
+		$post_type_object = get_post_type_object( $post->post_type );
+		$can_edit_post = current_user_can( 'edit_post', $post->ID );
+		$actions = array();
+		$title = _draft_or_post_title();
+
+		if ( $can_edit_post && 'trash' != $post->post_status ) {
+			$actions['edit'] = sprintf(
+				'<a href="%s" aria-label="%s">%s</a>',
+				get_edit_post_link( $post->ID ),
+				/* translators: %s: post title */
+				esc_attr( sprintf( __( 'Edit &#8220;%s&#8221;' ), $title ) ),
+				__( 'Edit' )
+			);
+			$actions['inline hide-if-no-js'] = sprintf(
+				'<a href="#" class="editinline" aria-label="%s">%s</a>',
+				/* translators: %s: post title */
+				esc_attr( sprintf( __( 'Quick edit &#8220;%s&#8221; inline' ), $title ) ),
+				__( 'Quick&nbsp;Edit' )
+			);
+		}
+
+		if ( current_user_can( 'delete_post', $post->ID ) ) {
+			if ( 'trash' === $post->post_status ) {
+				$actions['untrash'] = sprintf(
+					'<a href="%s" aria-label="%s">%s</a>',
+					wp_nonce_url( admin_url( sprintf( $post_type_object->_edit_link . '&amp;action=untrash', $post->ID ) ), 'untrash-post_' . $post->ID ),
+					/* translators: %s: post title */
+					esc_attr( sprintf( __( 'Restore &#8220;%s&#8221; from the Trash' ), $title ) ),
+					__( 'Restore' )
+				);
+			} elseif ( EMPTY_TRASH_DAYS ) {
+				$actions['trash'] = sprintf(
+					'<a href="%s" class="submitdelete" aria-label="%s">%s</a>',
+					get_delete_post_link( $post->ID ),
+					/* translators: %s: post title */
+					esc_attr( sprintf( __( 'Move &#8220;%s&#8221; to the Trash' ), $title ) ),
+					_x( 'Trash', 'verb' )
+				);
+			}
+			if ( 'trash' === $post->post_status || ! EMPTY_TRASH_DAYS ) {
+				$actions['delete'] = sprintf(
+					'<a href="%s" class="submitdelete" aria-label="%s">%s</a>',
+					get_delete_post_link( $post->ID, '', true ),
+					/* translators: %s: post title */
+					esc_attr( sprintf( __( 'Delete &#8220;%s&#8221; permanently' ), $title ) ),
+					__( 'Delete Permanently' )
+				);
+			}
+		}
+
+		if ( is_post_type_viewable( $post_type_object ) ) {
+			if ( in_array( $post->post_status, array( 'pending', 'draft', 'future' ) ) ) {
+				if ( $can_edit_post ) {
+					$preview_link = get_preview_post_link( $post );
+					$actions['view'] = sprintf(
+						'<a href="%s" rel="bookmark" aria-label="%s">%s</a>',
+						esc_url( $preview_link ),
+						/* translators: %s: post title */
+						esc_attr( sprintf( __( 'Preview &#8220;%s&#8221;' ), $title ) ),
+						__( 'Preview' )
+					);
+				}
+			} elseif ( 'trash' != $post->post_status ) {
+				$actions['view'] = sprintf(
+					'<a href="%s" rel="bookmark" aria-label="%s">%s</a>',
+					get_permalink( $post->ID ),
+					/* translators: %s: post title */
+					esc_attr( sprintf( __( 'View &#8220;%s&#8221;' ), $title ) ),
+					__( 'View' )
+				);
+			}
+		}
+
+		if ( is_post_type_hierarchical( $post->post_type ) ) {
+
+			/**
+			 * Filters the array of row action links on the Pages list table.
+			 *
+			 * The filter is evaluated only for hierarchical post types.
+			 *
+			 * @since 2.8.0
+			 *
+			 * @param array $actions An array of row action links. Defaults are
+			 *                         'Edit', 'Quick Edit', 'Restore', 'Trash',
+			 *                         'Delete Permanently', 'Preview', and 'View'.
+			 * @param WP_Post $post The post object.
+			 */
+			$actions = apply_filters( 'page_row_actions', $actions, $post );
+		} else {
+
+			/**
+			 * Filters the array of row action links on the Posts list table.
+			 *
+			 * The filter is evaluated only for non-hierarchical post types.
+			 *
+			 * @since 2.8.0
+			 *
+			 * @param array $actions An array of row action links. Defaults are
+			 *                         'Edit', 'Quick Edit', 'Restore', 'Trash',
+			 *                         'Delete Permanently', 'Preview', and 'View'.
+			 * @param WP_Post $post The post object.
+			 */
+			$actions = apply_filters( 'post_row_actions', $actions, $post );
+		}
+
+		return $this->row_actions( $actions );
+	}
+
+	/**
 	 * Outputs the hidden row displayed when inline editing
 	 *
 	 * @since 3.1.0
+	 *
+	 * @global string $mode List table view mode.
 	 */
 	public function inline_edit() {
 		global $mode;
@@ -1010,7 +1357,7 @@
 			$show_in_quick_edit = $taxonomy->show_in_quick_edit;
 
 			/**
-			 * Filter whether the current taxonomy should be shown in the Quick Edit panel.
+			 * Filters whether the current taxonomy should be shown in the Quick Edit panel.
 			 *
 			 * @since 4.2.0
 			 *
@@ -1028,7 +1375,7 @@
 				$flat_taxonomies[] = $taxonomy;
 		}
 
-		$m = ( isset( $mode ) && 'excerpt' == $mode ) ? 'excerpt' : 'list';
+		$m = ( isset( $mode ) && 'excerpt' === $mode ) ? 'excerpt' : 'list';
 		$can_publish = current_user_can( $post_type_object->cap->publish_posts );
 		$core_columns = array( 'cb' => true, 'date' => true, 'title' => true, 'categories' => true, 'tags' => true, 'comments' => true, 'author' => true );
 
@@ -1037,15 +1384,20 @@
 	<form method="get"><table style="display: none"><tbody id="inlineedit">
 		<?php
 		$hclass = count( $hierarchical_taxonomies ) ? 'post' : 'page';
+		$inline_edit_classes = "inline-edit-row inline-edit-row-$hclass";
+		$bulk_edit_classes   = "bulk-edit-row bulk-edit-row-$hclass bulk-edit-{$screen->post_type}";
+		$quick_edit_classes  = "quick-edit-row quick-edit-row-$hclass inline-edit-{$screen->post_type}";
+
 		$bulk = 0;
 		while ( $bulk < 2 ) { ?>
 
-		<tr id="<?php echo $bulk ? 'bulk-edit' : 'inline-edit'; ?>" class="inline-edit-row inline-edit-row-<?php echo "$hclass inline-edit-" . $screen->post_type;
-			echo $bulk ? " bulk-edit-row bulk-edit-row-$hclass bulk-edit-{$screen->post_type}" : " quick-edit-row quick-edit-row-$hclass inline-edit-{$screen->post_type}";
+		<tr id="<?php echo $bulk ? 'bulk-edit' : 'inline-edit'; ?>" class="<?php echo $inline_edit_classes . ' ';
+			echo $bulk ? $bulk_edit_classes : $quick_edit_classes;
 		?>" style="display: none"><td colspan="<?php echo $this->get_column_count(); ?>" class="colspanchange">
 
-		<fieldset class="inline-edit-col-left"><div class="inline-edit-col">
-			<h4><?php echo $bulk ? __( 'Bulk Edit' ) : __( 'Quick Edit' ); ?></h4>
+		<fieldset class="inline-edit-col-left">
+			<legend class="inline-edit-legend"><?php echo $bulk ? __( 'Bulk Edit' ) : __( 'Quick Edit' ); ?></legend>
+			<div class="inline-edit-col">
 	<?php
 
 	if ( post_type_supports( $screen->post_type, 'title' ) ) :
@@ -1070,24 +1422,25 @@
 	endif; // post_type_supports title ?>
 
 	<?php if ( !$bulk ) : ?>
-			<label><span class="title"><?php _e( 'Date' ); ?></span></label>
-			<div class="inline-edit-date">
+			<fieldset class="inline-edit-date">
+			<legend><span class="title"><?php _e( 'Date' ); ?></span></legend>
 				<?php touch_time( 1, 1, 0, 1 ); ?>
-			</div>
+			</fieldset>
 			<br class="clear" />
 	<?php endif; // $bulk
 
 		if ( post_type_supports( $screen->post_type, 'author' ) ) :
 			$authors_dropdown = '';
 
-			if ( is_super_admin() || current_user_can( $post_type_object->cap->edit_others_posts ) ) :
+			if ( current_user_can( $post_type_object->cap->edit_others_posts ) ) :
 				$users_opt = array(
 					'hide_if_only_one_author' => false,
 					'who' => 'authors',
 					'name' => 'post_author',
 					'class'=> 'authors',
 					'multi' => 1,
-					'echo' => 0
+					'echo' => 0,
+					'show' => 'display_name_with_login',
 				);
 				if ( $bulk )
 					$users_opt['show_option_none'] = __( '&mdash; No Change &mdash;' );
@@ -1107,7 +1460,7 @@
 	if ( !$bulk && $can_publish ) :
 	?>
 
-			<div class="inline-edit-group">
+			<div class="inline-edit-group wp-clearfix">
 				<label class="alignleft">
 					<span class="title"><?php _e( 'Password' ); ?></span>
 					<span class="input-text-wrap"><input type="text" name="post_password" class="inline-edit-password-input" value="" /></span>
@@ -1116,12 +1469,12 @@
 				<em class="alignleft inline-edit-or">
 					<?php
 					/* translators: Between password field and private checkbox on post quick edit interface */
-					echo __( '&ndash;OR&ndash;' );
+					_e( '&ndash;OR&ndash;' );
 					?>
 				</em>
 				<label class="alignleft inline-edit-private">
 					<input type="checkbox" name="keep_private" value="private" />
-					<span class="checkbox-title"><?php echo __( 'Private' ); ?></span>
+					<span class="checkbox-title"><?php _e( 'Private' ); ?></span>
 				</label>
 			</div>
 
@@ -1136,7 +1489,7 @@
 	<?php foreach ( $hierarchical_taxonomies as $taxonomy ) : ?>
 
 			<span class="title inline-edit-categories-label"><?php echo esc_html( $taxonomy->labels->name ) ?></span>
-			<input type="hidden" name="<?php echo ( $taxonomy->name == 'category' ) ? 'post_category[]' : 'tax_input[' . esc_attr( $taxonomy->name ) . '][]'; ?>" value="0" />
+			<input type="hidden" name="<?php echo ( $taxonomy->name === 'category' ) ? 'post_category[]' : 'tax_input[' . esc_attr( $taxonomy->name ) . '][]'; ?>" value="0" />
 			<ul class="cat-checklist <?php echo esc_attr( $taxonomy->name )?>-checklist">
 				<?php wp_terms_checklist( null, array( 'taxonomy' => $taxonomy->name ) ) ?>
 			</ul>
@@ -1173,7 +1526,7 @@
 			$dropdown_args['show_option_no_change'] =  __( '&mdash; No Change &mdash;' );
 
 		/**
-		 * Filter the arguments used to generate the Quick Edit page-parent drop-down.
+		 * Filters the arguments used to generate the Quick Edit page-parent drop-down.
 		 *
 		 * @since 2.7.0
 		 *
@@ -1197,38 +1550,38 @@
 				<span class="input-text-wrap"><input type="text" name="menu_order" class="inline-edit-menu-order-input" value="<?php echo $post->menu_order ?>" /></span>
 			</label>
 
-	<?php	endif; // !$bulk
-
-			if ( 'page' == $screen->post_type ) :
+	<?php
+			endif; // !$bulk
+		endif; // page-attributes
 	?>
 
-			<label>
-				<span class="title"><?php _e( 'Template' ); ?></span>
-				<select name="page_template">
-	<?php	if ( $bulk ) : ?>
-					<option value="-1"><?php _e( '&mdash; No Change &mdash;' ); ?></option>
-	<?php	endif; // $bulk ?>
-    				<?php
-					/** This filter is documented in wp-admin/includes/meta-boxes.php */
-					$default_title = apply_filters( 'default_page_template_title',  __( 'Default Template' ), 'quick-edit' );
-    				?>
-					<option value="default"><?php echo esc_html( $default_title ); ?></option>
-					<?php page_template_dropdown() ?>
-				</select>
-			</label>
-
-	<?php
-			endif; // page post_type
-		endif; // page-attributes
-	?>
+	<?php if ( 0 < count( get_page_templates( null, $screen->post_type ) ) ) : ?>
+		<label>
+			<span class="title"><?php _e( 'Template' ); ?></span>
+			<select name="page_template">
+<?php	if ( $bulk ) : ?>
+				<option value="-1"><?php _e( '&mdash; No Change &mdash;' ); ?></option>
+<?php	endif; // $bulk ?>
+                <?php
+				/** This filter is documented in wp-admin/includes/meta-boxes.php */
+				$default_title = apply_filters( 'default_page_template_title',  __( 'Default Template' ), 'quick-edit' );
+                ?>
+				<option value="default"><?php echo esc_html( $default_title ); ?></option>
+				<?php page_template_dropdown( '', $screen->post_type ) ?>
+			</select>
+		</label>
+	<?php endif; ?>
 
 	<?php if ( count( $flat_taxonomies ) && !$bulk ) : ?>
 
 	<?php foreach ( $flat_taxonomies as $taxonomy ) : ?>
-		<?php if ( current_user_can( $taxonomy->cap->assign_terms ) ) : ?>
+		<?php if ( current_user_can( $taxonomy->cap->assign_terms ) ) :
+			$taxonomy_name = esc_attr( $taxonomy->name );
+
+			?>
 			<label class="inline-edit-tags">
 				<span class="title"><?php echo esc_html( $taxonomy->labels->name ) ?></span>
-				<textarea cols="22" rows="1" name="tax_input[<?php echo esc_attr( $taxonomy->name )?>]" class="tax_input_<?php echo esc_attr( $taxonomy->name )?>"></textarea>
+				<textarea data-wp-taxonomy="<?php echo $taxonomy_name; ?>" cols="22" rows="1" name="tax_input[<?php echo $taxonomy_name; ?>]" class="tax_input_<?php echo $taxonomy_name; ?>"></textarea>
 			</label>
 		<?php endif; ?>
 
@@ -1239,7 +1592,7 @@
 	<?php if ( post_type_supports( $screen->post_type, 'comments' ) || post_type_supports( $screen->post_type, 'trackbacks' ) ) :
 		if ( $bulk ) : ?>
 
-			<div class="inline-edit-group">
+			<div class="inline-edit-group wp-clearfix">
 		<?php if ( post_type_supports( $screen->post_type, 'comments' ) ) : ?>
 			<label class="alignleft">
 				<span class="title"><?php _e( 'Comments' ); ?></span>
@@ -1263,7 +1616,7 @@
 
 	<?php else : // $bulk ?>
 
-			<div class="inline-edit-group">
+			<div class="inline-edit-group wp-clearfix">
 			<?php if ( post_type_supports( $screen->post_type, 'comments' ) ) : ?>
 				<label class="alignleft">
 					<input type="checkbox" name="comment_status" value="open" />
@@ -1280,7 +1633,7 @@
 	<?php endif; // $bulk
 	endif; // post_type_supports comments or pings ?>
 
-			<div class="inline-edit-group">
+			<div class="inline-edit-group wp-clearfix">
 				<label class="inline-edit-status alignleft">
 					<span class="title"><?php _e( 'Status' ); ?></span>
 					<select name="_status">
@@ -1299,7 +1652,7 @@
 					</select>
 				</label>
 
-	<?php if ( 'post' == $screen->post_type && $can_publish && current_user_can( $post_type_object->cap->edit_others_posts ) ) : ?>
+	<?php if ( 'post' === $screen->post_type && $can_publish && current_user_can( $post_type_object->cap->edit_others_posts ) ) : ?>
 
 	<?php	if ( $bulk ) : ?>
 
@@ -1331,19 +1684,19 @@
 		$post_formats = get_theme_support( 'post-formats' );
 
 		?>
-		<label class="alignleft" for="post_format">
+		<label class="alignleft">
 		<span class="title"><?php _ex( 'Format', 'post format' ); ?></span>
 		<select name="post_format">
 			<option value="-1"><?php _e( '&mdash; No Change &mdash;' ); ?></option>
 			<option value="0"><?php echo get_post_format_string( 'standard' ); ?></option>
 			<?php
-
-			foreach ( $post_formats[0] as $format ) {
-				?>
-				<option value="<?php echo esc_attr( $format ); ?>"><?php echo esc_html( get_post_format_string( $format ) ); ?></option>
-				<?php
+			if ( is_array( $post_formats[0] ) ) {
+				foreach ( $post_formats[0] as $format ) {
+					?>
+					<option value="<?php echo esc_attr( $format ); ?>"><?php echo esc_html( get_post_format_string( $format ) ); ?></option>
+					<?php
+				}
 			}
-
 			?>
 		</select></label>
 	<?php
@@ -1379,32 +1732,35 @@
 				 *
 				 * @since 2.7.0
 				 *
-				 * @param string  $column_name Name of the column to edit.
-				 * @param WP_Post $post_type   The post type slug.
+				 * @param string $column_name Name of the column to edit.
+				 * @param string $post_type   The post type slug, or current screen name if this is a taxonomy list table.
+				 * @param string taxonomy     The taxonomy name, if any.
 				 */
-				do_action( 'quick_edit_custom_box', $column_name, $screen->post_type );
+				do_action( 'quick_edit_custom_box', $column_name, $screen->post_type, '' );
 			}
 
 		}
 	?>
-		<p class="submit inline-edit-save">
-			<a href="#inline-edit" class="button-secondary cancel alignleft"><?php _e( 'Cancel' ); ?></a>
+		<div class="submit inline-edit-save">
+			<button type="button" class="button cancel alignleft"><?php _e( 'Cancel' ); ?></button>
 			<?php if ( ! $bulk ) {
 				wp_nonce_field( 'inlineeditnonce', '_inline_edit', false );
 				?>
-				<a href="#inline-edit" class="button-primary save alignright"><?php _e( 'Update' ); ?></a>
+				<button type="button" class="button button-primary save alignright"><?php _e( 'Update' ); ?></button>
 				<span class="spinner"></span>
 			<?php } else {
-				submit_button( __( 'Update' ), 'button-primary alignright', 'bulk_edit', false );
+				submit_button( __( 'Update' ), 'primary alignright', 'bulk_edit', false );
 			} ?>
 			<input type="hidden" name="post_view" value="<?php echo esc_attr( $m ); ?>" />
 			<input type="hidden" name="screen" value="<?php echo esc_attr( $screen->id ); ?>" />
 			<?php if ( ! $bulk && ! post_type_supports( $screen->post_type, 'author' ) ) { ?>
 				<input type="hidden" name="post_author" value="<?php echo esc_attr( $post->post_author ); ?>" />
 			<?php } ?>
-			<span class="error" style="display:none"></span>
 			<br class="clear" />
-		</p>
+			<div class="notice notice-error notice-alt inline hidden">
+				<p class="error"></p>
+			</div>
+		</div>
 		</td></tr>
 	<?php
 		$bulk++;