625 lines
14 KiB
PHP
625 lines
14 KiB
PHP
<?php
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/**
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* Base class for displaying a list of items as an ajaxified html table
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*
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* @package WordPress
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* @since 3.1.0
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*/
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class WP_List_Table {
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/**
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* The current list of items
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*
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* @since 3.1.0
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* @var array
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* @access protected
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*/
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var $items;
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/**
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* Various information about the current table
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*
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* @since 3.1.0
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* @var array
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* @access private
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*/
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var $_args;
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/**
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* Various information needed for displaying the pagination
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*
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* @since 3.1.0
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* @var array
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* @access private
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*/
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var $_pagination_args = array();
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/**
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* The current screen
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*
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* @since 3.1.0
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* @var object
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* @access private
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*/
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var $_screen;
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/**
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* Cached bulk actions
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*
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* @since 3.1.0
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* @var array
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* @access private
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*/
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var $_actions;
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/**
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* Cached pagination output
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*
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* @since 3.1.0
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* @var string
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* @access private
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*/
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var $_pagination;
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/**
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* Constructor. The child class should call this constructor from it's own constructor
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*
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* @param array $args An associative array with information about the current table
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* @access protected
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*/
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function WP_List_Table( $args ) {
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$args = wp_parse_args( $args, array(
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'screen' => '',
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'plural' => '',
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'singular' => '',
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'ajax' => true
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) );
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$this->_screen = $args['screen'];
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if ( is_string( $this->_screen ) )
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$this->_screen = convert_to_screen( $this->_screen );
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if ( !$args['plural'] )
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$args['plural'] = $this->_screen->base;
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$this->_args = $args;
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if ( $args['ajax'] ) {
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wp_enqueue_script( 'admin-table' );
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add_action( 'admin_footer', array( $this, '_js_vars' ) );
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}
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}
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/**
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* Checks the current user's permissions
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* @uses wp_die()
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*
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* @since 3.1.0
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* @access public
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*/
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function check_permissions() {
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die( 'function WP_List_Table::check_permissions() must be over-ridden in a sub-class.' );
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}
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/**
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* Prepares the list of items for displaying.
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* @uses WP_List_Table::set_pagination_args()
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*
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* @since 3.1.0
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* @access public
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*/
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function prepare_items() {
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die( 'function WP_List_Table::prepare_items() must be over-ridden in a sub-class.' );
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}
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/**
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* An internal method that sets all the necessary pagination arguments
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*
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* @param array $args An associative array with information about the pagination
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* @access protected
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*/
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function set_pagination_args( $args ) {
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$args = wp_parse_args( $args, array(
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'query_var' => 'paged',
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'total_items' => 0,
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'total_pages' => 0,
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'per_page' => 0,
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) );
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if ( !$args['total_pages'] && $args['per_page'] > 0 )
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$args['total_pages'] = ceil( $args['total_items'] / $args['per_page'] );
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$this->_pagination_args = $args;
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}
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/**
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* Wether the table has items to display or not
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*
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* @since 3.1.0
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* @access public
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*
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* @return bool
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*/
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function has_items() {
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return !empty( $this->items );
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}
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/**
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* Message to be displayed when there are no items
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*
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* @since 3.1.0
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* @access public
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*/
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function no_items() {
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_e( 'No items found.' );
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}
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/**
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* Get an associative array ( option_name => option_title ) with the list
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* of bulk actions available on this table.
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*
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* @since 3.1.0
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* @access protected
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*
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* @return array
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*/
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function get_bulk_actions() {
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return array();
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}
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/**
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* Display the bulk actions dropdown.
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*
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* @since 3.1.0
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* @access public
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*/
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function bulk_actions() {
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if ( is_null( $this->_actions ) ) {
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$this->_actions = $this->get_bulk_actions();
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$this->_actions = apply_filters( 'bulk_actions-' . $this->_screen->base, $this->_actions );
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$two = '';
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}
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else {
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$two = '2';
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}
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if ( empty( $this->_actions ) )
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return;
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echo "<select name='action$two'>\n";
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echo "<option value='-1' selected='selected'>" . __( 'Bulk Actions' ) . "</option>\n";
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foreach ( $this->_actions as $name => $title )
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echo "\t<option value='$name'>$title</option>\n";
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echo "</select>\n";
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echo "<input type='submit' value='" . esc_attr__( 'Apply' ) . "' name='doaction$two' id='doaction$two' class='button-secondary action' />\n";
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}
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/**
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* Display a monthly dropdown for filtering items
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*
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* @since 3.1.0
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* @access protected
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*/
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function months_dropdown( $post_type ) {
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global $wpdb, $wp_locale;
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$months = $wpdb->get_results( $wpdb->prepare( "
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SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
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FROM $wpdb->posts
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WHERE post_type = %s
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ORDER BY post_date DESC
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", $post_type ) );
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$month_count = count( $months );
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if ( !$month_count || ( 1 == $month_count && 0 == $months[0]->month ) )
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return;
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$m = isset( $_GET['m'] ) ? (int) $_GET['m'] : 0;
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?>
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<select name='m'>
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<option<?php selected( $m, 0 ); ?> value='0'><?php _e( 'Show all dates' ); ?></option>
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<?php
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foreach ( $months as $arc_row ) {
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if ( 0 == $arc_row->year )
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continue;
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$month = zeroise( $arc_row->month, 2 );
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$year = $arc_row->year;
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printf( "<option %s value='%s'>%s</option>\n",
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selected( $m, $year . $month, false ),
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esc_attr( $arc_row->year . $month ),
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$wp_locale->get_month( $month ) . " $year"
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);
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}
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?>
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</select>
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<?php
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}
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/**
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* Display a view switcher
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*
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* @since 3.1.0
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* @access protected
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*/
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function view_switcher( $current_mode ) {
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$modes = array(
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'list' => __( 'List View' ),
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'excerpt' => __( 'Excerpt View' )
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);
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?>
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<input type="hidden" name="mode" value="<?php echo esc_attr( $current_mode ); ?>" />
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<div class="view-switch">
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<?php
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foreach ( $modes as $mode => $title ) {
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$class = ( $current_mode == $mode ) ? 'class="current"' : '';
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echo "<a href='" . esc_url( add_query_arg( 'mode', $mode, $_SERVER['REQUEST_URI'] ) ) . "' $class><img id='view-switch-$mode' src='" . esc_url( includes_url( 'images/blank.gif' ) ) . "' width='20' height='20' title='$title' alt='$title' /></a>\n";
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}
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?>
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</div>
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<?php
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}
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/**
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* Get the current page number
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*
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* @since 3.1.0
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* @access protected
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*
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* @return int
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*/
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function get_pagenum( $query_var = 'paged' ) {
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$pagenum = isset( $_REQUEST[$query_var] ) ? absint( $_REQUEST[$query_var] ) : 0;
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return max( 1, $pagenum );
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}
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/**
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* Display the pagination.
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*
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* @since 3.1.0
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* @access protected
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*/
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function pagination() {
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if ( $this->_pagination ) {
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echo $this->_pagination;
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return;
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}
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if ( empty( $this->_pagination_args ) )
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return;
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extract( $this->_pagination_args );
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if ( $total_pages < 2 )
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return;
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$output = '<span class="displaying-num">' . sprintf( _n( '1 item', '%s items', $total_items ), number_format_i18n( $total_items ) ) . '</span>';
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$current = $this->get_pagenum( $query_var );
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$current_url = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
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$page_links = array();
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$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
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'first-page',
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esc_attr__( 'Go to the first page' ),
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esc_url( remove_query_arg( $query_var, $current_url ) ),
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'««'
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);
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$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
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'prev-page',
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esc_attr__( 'Go to the previous page' ),
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esc_url( add_query_arg( $query_var, max( 1, $current-1 ), $current_url ) ),
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'«'
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);
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$html_current_page = sprintf( "<input class='current-page' title='%s' type='text' name='%s' value='%s' size='%d' />",
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esc_attr__( 'Current page' ),
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esc_attr( $query_var ),
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number_format_i18n( $current ),
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strlen( $total_pages )
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);
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$html_total_pages = sprintf( "<span class='total-pages'>%s</span>", number_format_i18n( $total_pages ) );
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$page_links[] = sprintf( _x( '%s of %s', 'paging' ), $html_current_page, $html_total_pages );
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$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
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'next-page',
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esc_attr__( 'Go to the next page' ),
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esc_url( add_query_arg( $query_var, min( $total_pages, $current+1 ), $current_url ) ),
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'»'
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);
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$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
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'last-page',
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esc_attr__( 'Go to the last page' ),
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esc_url( add_query_arg( $query_var, $total_pages, $current_url ) ),
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'»»'
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);
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$output .= join( "\n", $page_links );
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$this->_pagination = "<div class='tablenav-pages'>$output</div>";
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echo $this->_pagination;
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}
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/**
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* Get a list of columns. The format is internal_name => title
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*
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* @since 3.1.0
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* @access protected
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*
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* @return array
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*/
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function get_columns() {
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die( 'function WP_List_Table::get_columns() must be over-ridden in a sub-class.' );
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}
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/**
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* Get a list of sortable columns. The format is internal_name => orderby
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*
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* @since 3.1.0
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* @access protected
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*
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* @return array
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*/
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function get_sortable_columns() {
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return array();
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}
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/**
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* Get a list of hidden columns.
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*
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* @since 3.1.0
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* @access private
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*
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* @return array
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*/
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function get_hidden_columns() {
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return (array) get_user_option( 'manage' . $this->_screen->id. 'columnshidden' );
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}
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/**
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* Get a list of all, hidden and sortable columns, with filter applied
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*
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* @since 3.1.0
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* @access protected
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*
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* @return array
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*/
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function get_column_headers() {
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if ( !isset( $this->_column_headers ) ) {
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$columns = apply_filters( 'manage_' . $this->_screen->id . '_columns', $this->get_columns() );
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$sortable = apply_filters( 'manage_' . $this->_screen->id . '_sortable_columns', $this->get_sortable_columns() );
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$hidden = $this->get_hidden_columns();
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$this->_column_headers = array( $columns, $hidden, $sortable );
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}
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return $this->_column_headers;
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}
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/**
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* Print column headers, accounting for hidden and sortable columns.
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*
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* @since 3.1.0
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* @access protected
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*/
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function print_column_headers( $with_id = true ) {
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$screen = $this->_screen;
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list( $columns, $hidden, $sortable ) = $this->get_column_headers();
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$styles = array();
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$current_url = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
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if ( isset( $_GET['orderby'] ) )
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$current_orderby = $_GET['orderby'];
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else
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$current_orderby = '';
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if ( isset( $_GET['order'] ) && 'desc' == $_GET['order'] )
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$current_order = 'desc';
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else
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$current_order = 'asc';
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foreach ( $columns as $column_key => $column_display_name ) {
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$class = array( 'manage-column', "column-$column_key" );
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$style = '';
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if ( in_array( $column_key, $hidden ) )
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$style = 'display:none;';
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if ( isset( $styles[$screen->id] ) && isset( $styles[$screen->id][$column_key] ) )
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$style .= ' ' . $styles[$screen->id][$column_key];
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$style = ' style="' . $style . '"';
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if ( 'cb' == $column_key )
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$class[] = 'check-column';
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elseif ( in_array( $column_key, array( 'posts', 'comments', 'links' ) ) )
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$class[] = 'num';
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if ( isset( $sortable[$column_key] ) ) {
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$orderby = $sortable[$column_key];
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if ( $current_orderby == $orderby ) {
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$order = 'asc' == $current_order ? 'desc' : 'asc';
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$class[] = "sorted-$current_order";
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} else {
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$order = 'asc';
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$class[] = 'sortable';
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}
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$column_display_name = '<a href="' . esc_url( add_query_arg( compact( 'orderby', 'order' ), $current_url ) ) . '">' . $column_display_name . '</a>';
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$column_display_name .= '<div class="sorting-indicator"></div>';
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}
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$id = $with_id ? "id='$column_key'" : '';
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if ( !empty( $class ) )
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$class = "class='" . join( ' ', $class ) . "'";
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echo "<th scope='col' $id $class $style>$column_display_name</th>";
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}
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}
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/**
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* Display the table or a message if there are no items
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*
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* @since 3.1.0
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* @access public
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*/
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function display() {
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if ( $this->has_items() ) {
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$this->display_table();
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} else {
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echo '<br class="clear">';
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echo '<p>';
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$this->no_items();
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echo '</p>';
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}
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}
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/**
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* Get a list of CSS classes for the <table> tag
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*
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* @since 3.1.0
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* @access protected
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*
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* @return array
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*/
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function get_table_classes() {
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extract( $this->_args );
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return array( 'widefat', 'fixed', $plural );
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}
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/**
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* Display the full table
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*
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* @since 3.1.0
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* @access public
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*/
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function display_table() {
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extract( $this->_args );
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$this->display_tablenav( 'top' );
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?>
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<table class="<?php echo implode( ' ', $this->get_table_classes() ); ?>" cellspacing="0">
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<thead>
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<tr>
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<?php $this->print_column_headers(); ?>
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</tr>
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</thead>
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<tfoot>
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<tr>
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<?php $this->print_column_headers( false ); ?>
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</tr>
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</tfoot>
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<tbody id="the-list"<?php if ( $singular ) echo " class='list:$singular'"; ?>>
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<?php $this->display_rows(); ?>
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</tbody>
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</table>
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<?php
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$this->display_tablenav( 'bottom' );
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}
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/**
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* Generate the table navigation above or below the table
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*
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* @since 3.1.0
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* @access protected
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*/
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function display_tablenav( $which ) {
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if ( 'top' == $which )
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wp_nonce_field( 'bulk-' . $this->_args['plural'] );
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?>
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<div class="tablenav">
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<div class="alignleft actions">
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<?php $this->bulk_actions( $which ); ?>
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</div>
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<?php
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$this->extra_tablenav( $which );
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$this->pagination( $which );
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?>
|
|
|
|
<br class="clear">
|
|
</div>
|
|
|
|
<br class="clear">
|
|
<?php
|
|
}
|
|
|
|
/**
|
|
* Extra controls to be displayed between bulk actions and pagination
|
|
*
|
|
* @since 3.1.0
|
|
* @access protected
|
|
*/
|
|
function extra_tablenav( $which ) {}
|
|
|
|
/**
|
|
* Generate the <tbody> part of the table
|
|
*
|
|
* @since 3.1.0
|
|
* @access protected
|
|
*/
|
|
function display_rows() {
|
|
die( 'function WP_List_Table::display_rows() must be over-ridden in a sub-class.' );
|
|
}
|
|
|
|
/**
|
|
* Handle an incoming ajax request ( called from admin-ajax.php )
|
|
*
|
|
* @access public
|
|
*/
|
|
function ajax_response() {
|
|
$this->check_permissions();
|
|
$this->prepare_items();
|
|
|
|
extract( $this->_args );
|
|
extract( $this->_pagination_args );
|
|
|
|
ob_start();
|
|
$this->display_rows();
|
|
$rows = ob_get_clean();
|
|
|
|
die( json_encode( array(
|
|
'rows' => $rows,
|
|
'total_items' => sprintf( _n( '1 item', '%s items', $total_items ), number_format_i18n( $total_items ) ),
|
|
'total_pages' => $total_pages
|
|
) ) );
|
|
}
|
|
|
|
/**
|
|
* Send required variables to JavaScript land
|
|
*
|
|
* @access private
|
|
*/
|
|
function _js_vars() {
|
|
extract( $this->_args );
|
|
|
|
$class = get_class( $this );
|
|
|
|
printf( "<script type='text/javascript'>list_args = %s;</script>\n",
|
|
json_encode( compact( 'screen', 'class' ) )
|
|
);
|
|
}
|
|
}
|