WP_Terms_List_Table::prepare_items()

77	public function prepare_items() {78		$taxonomy = $this->screen->taxonomy;79 80		$tags_per_page = $this->get_items_per_page( "edit_{$taxonomy}_per_page" );81 82		if ( 'post_tag' === $taxonomy ) {83			/**84			 * Filters the number of terms displayed per page for the Tags list table.85			 *86			 * @since 2.8.087			 *88			 * @param int $tags_per_page Number of tags to be displayed. Default 20.89			 */90			$tags_per_page = apply_filters( 'edit_tags_per_page', $tags_per_page );91 92			/**93			 * Filters the number of terms displayed per page for the Tags list table.94			 *95			 * @since 2.7.096			 * @deprecated 2.8.0 Use {@see 'edit_tags_per_page'} instead.97			 *98			 * @param int $tags_per_page Number of tags to be displayed. Default 20.99			 */100			$tags_per_page = apply_filters_deprecated( 'tagsperpage', array( $tags_per_page ), '2.8.0', 'edit_tags_per_page' );101		} elseif ( 'category' === $taxonomy ) {102			/**103			 * Filters the number of terms displayed per page for the Categories list table.104			 *105			 * @since 2.8.0106			 *107			 * @param int $tags_per_page Number of categories to be displayed. Default 20.108			 */109			$tags_per_page = apply_filters( 'edit_categories_per_page', $tags_per_page );110		}111 112		$search = ! empty( $_REQUEST['s'] ) ? trim( wp_unslash( $_REQUEST['s'] ) ) : '';113 114		$args = array(115			'taxonomy'   => $taxonomy,116			'search'     => $search,117			'page'       => $this->get_pagenum(),118			'number'     => $tags_per_page,119			'hide_empty' => 0,120		);121 122		if ( ! empty( $_REQUEST['orderby'] ) ) {123			$args['orderby'] = trim( wp_unslash( $_REQUEST['orderby'] ) );124		}125 126		if ( ! empty( $_REQUEST['order'] ) ) {127			$args['order'] = trim( wp_unslash( $_REQUEST['order'] ) );128		}129 130		$args['offset'] = ( $args['page'] - 1 ) * $args['number'];131 132		// Save the values because 'number' and 'offset' can be subsequently overridden.133		$this->callback_args = $args;134 135		if ( is_taxonomy_hierarchical( $taxonomy ) && ! isset( $args['orderby'] ) ) {136			// We'll need the full set of terms then.137			$args['number'] = 0;138			$args['offset'] = $args['number'];139		}140 141		$this->items = get_terms( $args );142 143		$this->set_pagination_args(144			array(145				'total_items' => wp_count_terms(146					array(147						'taxonomy' => $taxonomy,148						'search'   => $search,149					)150				),151				'per_page'    => $tags_per_page,152			)153		);154	}