Web.Admin/2014/wordpress/wp-admin/includes/class-wp-list-table.php
<?php
/**
* Base class for displaying a list of items in an ajaxified HTML table.
*
* @package WordPress
* @subpackage List_Table
* @since 3.1.0
* @access private
*/
class WP_List_Table {
/**
* The current list of items
*
* @since 3.1.0
* @var array
* @access protected
*/
var $items;
/**
* Various information about the current table
*
* @since 3.1.0
* @var array
* @access private
*/
var $_args;
/**
* Various information needed for displaying the pagination
*
* @since 3.1.0
* @var array
* @access private
*/
var $_pagination_args = array();
/**
* The current screen
*
* @since 3.1.0
* @var object
* @access protected
*/
var $screen;
/**
* Cached bulk actions
*
* @since 3.1.0
* @var array
* @access private
*/
var $_actions;
/**
* Cached pagination output
*
* @since 3.1.0
* @var string
* @access private
*/
var $_pagination;
/**
* Constructor. The child class should call this constructor from its own constructor
*
* @param array $args An associative array with information about the current table
* @access protected
*/
function __construct( $args = array() ) {
$args = wp_parse_args( $args, array(
'plural' => '',
'singular' => '',
'ajax' => false,
'screen' => null,
) );
$this->screen = convert_to_screen( $args['screen'] );
add_filter( "manage_{$this->screen->id}_columns", array( $this, 'get_columns' ), 0 );
if ( !$args['plural'] )
$args['plural'] = $this->screen->base;
$args['plural'] = sanitize_key( $args['plural'] );
$args['singular'] = sanitize_key( $args['singular'] );
$this->_args = $args;
if ( $args['ajax'] ) {
// wp_enqueue_script( 'list-table' );
add_action( 'admin_footer', array( $this, '_js_vars' ) );
}
}
/**
* Checks the current user's permissions
* @uses wp_die()
*
* @since 3.1.0
* @access public
* @abstract
*/
function ajax_user_can() {
die( 'function WP_List_Table::ajax_user_can() must be over-ridden in a sub-class.' );
}
/**
* Prepares the list of items for displaying.
* @uses WP_List_Table::set_pagination_args()
*
* @since 3.1.0
* @access public
* @abstract
*/
function prepare_items() {
die( 'function WP_List_Table::prepare_items() must be over-ridden in a sub-class.' );
}
/**
* An internal method that sets all the necessary pagination arguments
*
* @param array $args An associative array with information about the pagination
* @access protected
*/
function set_pagination_args( $args ) {
$args = wp_parse_args( $args, array(
'total_items' => 0,
'total_pages' => 0,
'per_page' => 0,
) );
if ( !$args['total_pages'] && $args['per_page'] > 0 )
$args['total_pages'] = ceil( $args['total_items'] / $args['per_page'] );
// redirect if page number is invalid and headers are not already sent
if ( ! headers_sent() && ( ! defined( 'DOING_AJAX' ) || ! DOING_AJAX ) && $args['total_pages'] > 0 && $this->get_pagenum() > $args['total_pages'] ) {
wp_redirect( add_query_arg( 'paged', $args['total_pages'] ) );
exit;
}
$this->_pagination_args = $args;
}
/**
* Access the pagination args
*
* @since 3.1.0
* @access public
*
* @param string $key
* @return array
*/
function get_pagination_arg( $key ) {
if ( 'page' == $key )
return $this->get_pagenum();
if ( isset( $this->_pagination_args[$key] ) )
return $this->_pagination_args[$key];
}
/**
* Whether the table has items to display or not
*
* @since 3.1.0
* @access public
*
* @return bool
*/
function has_items() {
return !empty( $this->items );
}
/**
* Message to be displayed when there are no items
*
* @since 3.1.0
* @access public
*/
function no_items() {
_e( 'No items found.' );
}
/**
* Display the search box.
*
* @since 3.1.0
* @access public
*
* @param string $text The search button text
* @param string $input_id The search input id
*/
function search_box( $text, $input_id ) {
if ( empty( $_REQUEST['s'] ) && !$this->has_items() )
return;
$input_id = $input_id . '-search-input';
if ( ! empty( $_REQUEST['orderby'] ) )
echo '<input type="hidden" name="orderby" value="' . esc_attr( $_REQUEST['orderby'] ) . '" />';
if ( ! empty( $_REQUEST['order'] ) )
echo '<input type="hidden" name="order" value="' . esc_attr( $_REQUEST['order'] ) . '" />';
if ( ! empty( $_REQUEST['post_mime_type'] ) )
echo '<input type="hidden" name="post_mime_type" value="' . esc_attr( $_REQUEST['post_mime_type'] ) . '" />';
if ( ! empty( $_REQUEST['detached'] ) )
echo '<input type="hidden" name="detached" value="' . esc_attr( $_REQUEST['detached'] ) . '" />';
?>
<p class="search-box">
<label class="screen-reader-text" for="<?php echo $input_id ?>"><?php echo $text; ?>:</label>
<input type="search" id="<?php echo $input_id ?>" name="s" value="<?php _admin_search_query(); ?>" />
<?php submit_button( $text, 'button', false, false, array('id' => 'search-submit') ); ?>
</p>
<?php
}
/**
* Get an associative array ( id => link ) with the list
* of views available on this table.
*
* @since 3.1.0
* @access protected
*
* @return array
*/
function get_views() {
return array();
}
/**
* Display the list of views available on this table.
*
* @since 3.1.0
* @access public
*/
function views() {
$views = $this->get_views();
/**
* Filter the list of available list table views.
*
* The dynamic portion of the hook name, $this->screen->id, refers
* to the ID of the current screen, usually a string.
*
* @since 3.5.0
*
* @param array $views An array of available list table views.
*/
$views = apply_filters( "views_{$this->screen->id}", $views );
if ( empty( $views ) )
return;
echo "<ul class='subsubsub'>\n";
foreach ( $views as $class => $view ) {
$views[ $class ] = "\t<li class='$class'>$view";
}
echo implode( " |</li>\n", $views ) . "</li>\n";
echo "</ul>";
}
/**
* Get an associative array ( option_name => option_title ) with the list
* of bulk actions available on this table.
*
* @since 3.1.0
* @access protected
*
* @return array
*/
function get_bulk_actions() {
return array();
}
/**
* Display the bulk actions dropdown.
*
* @since 3.1.0
* @access public
*/
function bulk_actions() {
if ( is_null( $this->_actions ) ) {
$no_new_actions = $this->_actions = $this->get_bulk_actions();
/**
* Filter the list table Bulk Actions drop-down.
*
* The dynamic portion of the hook name, $this->screen->id, refers
* to the ID of the current screen, usually a string.
*
* This filter can currently only be used to remove bulk actions.
*
* @since 3.5.0
*
* @param array $actions An array of the available bulk actions.
*/
$this->_actions = apply_filters( "bulk_actions-{$this->screen->id}", $this->_actions );
$this->_actions = array_intersect_assoc( $this->_actions, $no_new_actions );
$two = '';
} else {
$two = '2';
}
if ( empty( $this->_actions ) )
return;
echo "<select name='action$two'>\n";
echo "<option value='-1' selected='selected'>" . __( 'Bulk Actions' ) . "</option>\n";
foreach ( $this->_actions as $name => $title ) {
$class = 'edit' == $name ? ' class="hide-if-no-js"' : '';
echo "\t<option value='$name'$class>$title</option>\n";
}
echo "</select>\n";
submit_button( __( 'Apply' ), 'action', false, false, array( 'id' => "doaction$two" ) );
echo "\n";
}
/**
* Get the current action selected from the bulk actions dropdown.
*
* @since 3.1.0
* @access public
*
* @return string|bool The action name or False if no action was selected
*/
function current_action() {
if ( isset( $_REQUEST['action'] ) && -1 != $_REQUEST['action'] )
return $_REQUEST['action'];
if ( isset( $_REQUEST['action2'] ) && -1 != $_REQUEST['action2'] )
return $_REQUEST['action2'];
return false;
}
/**
* Generate row actions div
*
* @since 3.1.0
* @access protected
*
* @param array $actions The list of actions
* @param bool $always_visible Whether the actions should be always visible
* @return string
*/
function row_actions( $actions, $always_visible = false ) {
$action_count = count( $actions );
$i = 0;
if ( !$action_count )
return '';
$out = '<div class="' . ( $always_visible ? 'row-actions visible' : 'row-actions' ) . '">';
foreach ( $actions as $action => $link ) {
++$i;
( $i == $action_count ) ? $sep = '' : $sep = ' | ';
$out .= "<span class='$action'>$link$sep</span>";
}
$out .= '</div>';
return $out;
}
/**
* Display a monthly dropdown for filtering items
*
* @since 3.1.0
* @access protected
*/
function months_dropdown( $post_type ) {
global $wpdb, $wp_locale;
$months = $wpdb->get_results( $wpdb->prepare( "
SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
FROM $wpdb->posts
WHERE post_type = %s
ORDER BY post_date DESC
", $post_type ) );
/**
* Filter the 'Months' drop-down results.
*
* @since 3.7.0
*
* @param object $months The months drop-down query results.
* @param string $post_type The post type.
*/
$months = apply_filters( 'months_dropdown_results', $months, $post_type );
$month_count = count( $months );
if ( !$month_count || ( 1 == $month_count && 0 == $months[0]->month ) )
return;
$m = isset( $_GET['m'] ) ? (int) $_GET['m'] : 0;
?>
<select name='m'>
<option<?php selected( $m, 0 ); ?> value='0'><?php _e( 'All dates' ); ?></option>
<?php
foreach ( $months as $arc_row ) {
if ( 0 == $arc_row->year )
continue;
$month = zeroise( $arc_row->month, 2 );
$year = $arc_row->year;
printf( "<option %s value='%s'>%s</option>\n",
selected( $m, $year . $month, false ),
esc_attr( $arc_row->year . $month ),
/* translators: 1: month name, 2: 4-digit year */
sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $month ), $year )
);
}
?>
</select>
<?php
}
/**
* Display a view switcher
*
* @since 3.1.0
* @access protected
*/
function view_switcher( $current_mode ) {
$modes = array(
'list' => __( 'List View' ),
'excerpt' => __( 'Excerpt View' )
);
?>
<input type="hidden" name="mode" value="<?php echo esc_attr( $current_mode ); ?>" />
<div class="view-switch">
<?php
foreach ( $modes as $mode => $title ) {
$class = ( $current_mode == $mode ) ? 'class="current"' : '';
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";
}
?>
</div>
<?php
}
/**
* Display a comment count bubble
*
* @since 3.1.0
* @access protected
*
* @param int $post_id
* @param int $pending_comments
*/
function comments_bubble( $post_id, $pending_comments ) {
$pending_phrase = sprintf( __( '%s pending' ), number_format( $pending_comments ) );
if ( $pending_comments )
echo '<strong>';
echo "<a href='" . esc_url( add_query_arg( 'p', $post_id, admin_url( 'edit-comments.php' ) ) ) . "' title='" . esc_attr( $pending_phrase ) . "' class='post-com-count'><span class='comment-count'>" . number_format_i18n( get_comments_number() ) . "</span></a>";
if ( $pending_comments )
echo '</strong>';
}
/**
* Get the current page number
*
* @since 3.1.0
* @access protected
*
* @return int
*/
function get_pagenum() {
$pagenum = isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 0;
if( isset( $this->_pagination_args['total_pages'] ) && $pagenum > $this->_pagination_args['total_pages'] )
$pagenum = $this->_pagination_args['total_pages'];
return max( 1, $pagenum );
}
/**
* Get number of items to display on a single page
*
* @since 3.1.0
* @access protected
*
* @return int
*/
function get_items_per_page( $option, $default = 20 ) {
$per_page = (int) get_user_option( $option );
if ( empty( $per_page ) || $per_page < 1 )
$per_page = $default;
/**
* Filter the number of items to be displayed on each page of the list table.
*
* The dynamic hook name, $option, refers to the per page option depending
* on the type of list table in use. Possible values may include:
* 'edit_comments_per_page', 'sites_network_per_page', 'site_themes_network_per_page',
* 'themes_netework_per_page', 'users_network_per_page', 'edit_{$post_type}', etc.
*
* @since 2.9.0
*
* @param int $per_page Number of items to be displayed. Default 20.
*/
return (int) apply_filters( $option, $per_page );
}
/**
* Display the pagination.
*
* @since 3.1.0
* @access protected
*/
function pagination( $which ) {
if ( empty( $this->_pagination_args ) )
return;
extract( $this->_pagination_args, EXTR_SKIP );
$output = '<span class="displaying-num">' . sprintf( _n( '1 item', '%s items', $total_items ), number_format_i18n( $total_items ) ) . '</span>';
$current = $this->get_pagenum();
$current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
$current_url = remove_query_arg( array( 'hotkeys_highlight_last', 'hotkeys_highlight_first' ), $current_url );
$page_links = array();
$disable_first = $disable_last = '';
if ( $current == 1 )
$disable_first = ' disabled';
if ( $current == $total_pages )
$disable_last = ' disabled';
$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
'first-page' . $disable_first,
esc_attr__( 'Go to the first page' ),
esc_url( remove_query_arg( 'paged', $current_url ) ),
'«'
);
$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
'prev-page' . $disable_first,
esc_attr__( 'Go to the previous page' ),
esc_url( add_query_arg( 'paged', max( 1, $current-1 ), $current_url ) ),
'‹'
);
if ( 'bottom' == $which )
$html_current_page = $current;
else
$html_current_page = sprintf( "<input class='current-page' title='%s' type='text' name='paged' value='%s' size='%d' />",
esc_attr__( 'Current page' ),
$current,
strlen( $total_pages )
);
$html_total_pages = sprintf( "<span class='total-pages'>%s</span>", number_format_i18n( $total_pages ) );
$page_links[] = '<span class="paging-input">' . sprintf( _x( '%1$s of %2$s', 'paging' ), $html_current_page, $html_total_pages ) . '</span>';
$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
'next-page' . $disable_last,
esc_attr__( 'Go to the next page' ),
esc_url( add_query_arg( 'paged', min( $total_pages, $current+1 ), $current_url ) ),
'›'
);
$page_links[] = sprintf( "<a class='%s' title='%s' href='%s'>%s</a>",
'last-page' . $disable_last,
esc_attr__( 'Go to the last page' ),
esc_url( add_query_arg( 'paged', $total_pages, $current_url ) ),
'»'
);
$pagination_links_class = 'pagination-links';
if ( ! empty( $infinite_scroll ) )
$pagination_links_class = ' hide-if-js';
$output .= "\n<span class='$pagination_links_class'>" . join( "\n", $page_links ) . '</span>';
if ( $total_pages )
$page_class = $total_pages < 2 ? ' one-page' : '';
else
$page_class = ' no-pages';
$this->_pagination = "<div class='tablenav-pages{$page_class}'>$output</div>";
echo $this->_pagination;
}
/**
* Get a list of columns. The format is:
* 'internal-name' => 'Title'
*
* @since 3.1.0
* @access protected
* @abstract
*
* @return array
*/
function get_columns() {
die( 'function WP_List_Table::get_columns() must be over-ridden in a sub-class.' );
}
/**
* Get a list of sortable columns. The format is:
* 'internal-name' => 'orderby'
* or
* 'internal-name' => array( 'orderby', true )
*
* The second format will make the initial sorting order be descending
*
* @since 3.1.0
* @access protected
*
* @return array
*/
function get_sortable_columns() {
return array();
}
/**
* Get a list of all, hidden and sortable columns, with filter applied
*
* @since 3.1.0
* @access protected
*
* @return array
*/
function get_column_info() {
if ( isset( $this->_column_headers ) )
return $this->_column_headers;
$columns = get_column_headers( $this->screen );
$hidden = get_hidden_columns( $this->screen );
$sortable_columns = $this->get_sortable_columns();
/**
* Filter the list table sortable columns for a specific screen.
*
* The dynamic portion of the hook name, $this->screen->id, refers
* to the ID of the current screen, usually a string.
*
* @since 3.5.0
*
* @param array $sortable_columns An array of sortable columns.
*/
$_sortable = apply_filters( "manage_{$this->screen->id}_sortable_columns", $sortable_columns );
$sortable = array();
foreach ( $_sortable as $id => $data ) {
if ( empty( $data ) )
continue;
$data = (array) $data;
if ( !isset( $data[1] ) )
$data[1] = false;
$sortable[$id] = $data;
}
$this->_column_headers = array( $columns, $hidden, $sortable );
return $this->_column_headers;
}
/**
* Return number of visible columns
*
* @since 3.1.0
* @access public
*
* @return int
*/
function get_column_count() {
list ( $columns, $hidden ) = $this->get_column_info();
$hidden = array_intersect( array_keys( $columns ), array_filter( $hidden ) );
return count( $columns ) - count( $hidden );
}
/**
* Print column headers, accounting for hidden and sortable columns.
*
* @since 3.1.0
* @access protected
*
* @param bool $with_id Whether to set the id attribute or not
*/
function print_column_headers( $with_id = true ) {
list( $columns, $hidden, $sortable ) = $this->get_column_info();
$current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
$current_url = remove_query_arg( 'paged', $current_url );
if ( isset( $_GET['orderby'] ) )
$current_orderby = $_GET['orderby'];
else
$current_orderby = '';
if ( isset( $_GET['order'] ) && 'desc' == $_GET['order'] )
$current_order = 'desc';
else
$current_order = 'asc';
if ( ! empty( $columns['cb'] ) ) {
static $cb_counter = 1;
$columns['cb'] = '<label class="screen-reader-text" for="cb-select-all-' . $cb_counter . '">' . __( 'Select All' ) . '</label>'
. '<input id="cb-select-all-' . $cb_counter . '" type="checkbox" />';
$cb_counter++;
}
foreach ( $columns as $column_key => $column_display_name ) {
$class = array( 'manage-column', "column-$column_key" );
$style = '';
if ( in_array( $column_key, $hidden ) )
$style = 'display:none;';
$style = ' style="' . $style . '"';
if ( 'cb' == $column_key )
$class[] = 'check-column';
elseif ( in_array( $column_key, array( 'posts', 'comments', 'links' ) ) )
$class[] = 'num';
if ( isset( $sortable[$column_key] ) ) {
list( $orderby, $desc_first ) = $sortable[$column_key];
if ( $current_orderby == $orderby ) {
$order = 'asc' == $current_order ? 'desc' : 'asc';
$class[] = 'sorted';
$class[] = $current_order;
} else {
$order = $desc_first ? 'desc' : 'asc';
$class[] = 'sortable';
$class[] = $desc_first ? 'asc' : 'desc';
}
$column_display_name = '<a href="' . esc_url( add_query_arg( compact( 'orderby', 'order' ), $current_url ) ) . '"><span>' . $column_display_name . '</span><span class="sorting-indicator"></span></a>';
}
$id = $with_id ? "id='$column_key'" : '';
if ( !empty( $class ) )
$class = "class='" . join( ' ', $class ) . "'";
echo "<th scope='col' $id $class $style>$column_display_name</th>";
}
}
/**
* Display the table
*
* @since 3.1.0
* @access public
*/
function display() {
extract( $this->_args );
$this->display_tablenav( 'top' );
?>
<table class="wp-list-table <?php echo implode( ' ', $this->get_table_classes() ); ?>">
<thead>
<tr>
<?php $this->print_column_headers(); ?>
</tr>
</thead>
<tfoot>
<tr>
<?php $this->print_column_headers( false ); ?>
</tr>
</tfoot>
<tbody id="the-list"<?php if ( $singular ) echo " data-wp-lists='list:$singular'"; ?>>
<?php $this->display_rows_or_placeholder(); ?>
</tbody>
</table>
<?php
$this->display_tablenav( 'bottom' );
}
/**
* Get a list of CSS classes for the <table> tag
*
* @since 3.1.0
* @access protected
*
* @return array
*/
function get_table_classes() {
return array( 'widefat', 'fixed', $this->_args['plural'] );
}
/**
* Generate the table navigation above or below the table
*
* @since 3.1.0
* @access protected
*/
function display_tablenav( $which ) {
if ( 'top' == $which )
wp_nonce_field( 'bulk-' . $this->_args['plural'] );
?>
<div class="tablenav <?php echo esc_attr( $which ); ?>">
<div class="alignleft actions bulkactions">
<?php $this->bulk_actions(); ?>
</div>
<?php
$this->extra_tablenav( $which );
$this->pagination( $which );
?>
<br class="clear" />
</div>
<?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_or_placeholder() {
if ( $this->has_items() ) {
$this->display_rows();
} else {
list( $columns, $hidden ) = $this->get_column_info();
echo '<tr class="no-items"><td class="colspanchange" colspan="' . $this->get_column_count() . '">';
$this->no_items();
echo '</td></tr>';
}
}
/**
* Generate the table rows
*
* @since 3.1.0
* @access protected
*/
function display_rows() {
foreach ( $this->items as $item )
$this->single_row( $item );
}
/**
* Generates content for a single row of the table
*
* @since 3.1.0
* @access protected
*
* @param object $item The current item
*/
function single_row( $item ) {
static $row_class = '';
$row_class = ( $row_class == '' ? ' class="alternate"' : '' );
echo '<tr' . $row_class . '>';
$this->single_row_columns( $item );
echo '</tr>';
}
/**
* Generates the columns for a single row of the table
*
* @since 3.1.0
* @access protected
*
* @param object $item The current item
*/
function single_row_columns( $item ) {
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";
if ( 'cb' == $column_name ) {
echo '<th scope="row" class="check-column">';
echo $this->column_cb( $item );
echo '</th>';
}
elseif ( method_exists( $this, 'column_' . $column_name ) ) {
echo "<td $attributes>";
echo call_user_func( array( $this, 'column_' . $column_name ), $item );
echo "</td>";
}
else {
echo "<td $attributes>";
echo $this->column_default( $item, $column_name );
echo "</td>";
}
}
}
/**
* Handle an incoming ajax request (called from admin-ajax.php)
*
* @since 3.1.0
* @access public
*/
function ajax_response() {
$this->prepare_items();
extract( $this->_args );
extract( $this->_pagination_args, EXTR_SKIP );
ob_start();
if ( ! empty( $_REQUEST['no_placeholder'] ) )
$this->display_rows();
else
$this->display_rows_or_placeholder();
$rows = ob_get_clean();
$response = array( 'rows' => $rows );
if ( isset( $total_items ) )
$response['total_items_i18n'] = sprintf( _n( '1 item', '%s items', $total_items ), number_format_i18n( $total_items ) );
if ( isset( $total_pages ) ) {
$response['total_pages'] = $total_pages;
$response['total_pages_i18n'] = number_format_i18n( $total_pages );
}
die( json_encode( $response ) );
}
/**
* Send required variables to JavaScript land
*
* @access private
*/
function _js_vars() {
$args = array(
'class' => get_class( $this ),
'screen' => array(
'id' => $this->screen->id,
'base' => $this->screen->base,
)
);
printf( "<script type='text/javascript'>list_args = %s;</script>\n", json_encode( $args ) );
}
}