source: trunk/www.guidonia.net/wp/wp-admin/edit-tags.php@ 44

<?php
/**
 * Edit Tags Administration Panel.
 *
 * @package WordPress
 * @subpackage Administration
 */

/** WordPress Administration Bootstrap */
require_once('admin.php');

$title = __('Tags');

wp_reset_vars( array('action', 'tag', 'taxonomy') );

if ( empty($taxonomy) )
        $taxonomy = 'post_tag';

if ( !is_taxonomy($taxonomy) )
        wp_die(__('Invalid taxonomy'));

$parent_file = 'edit.php';
$submenu_file = "edit-tags.php?taxonomy=$taxonomy";

if ( isset( $_GET['action'] ) && isset($_GET['delete_tags']) && ( 'delete' == $_GET['action'] || 'delete' == $_GET['action2'] ) )
        $action = 'bulk-delete';

switch($action) {

case 'addtag':

        check_admin_referer('add-tag');

        if ( !current_user_can('manage_categories') )
                wp_die(__('Cheatin&#8217; uh?'));

        $ret = wp_insert_term($_POST['name'], $taxonomy, $_POST);
        if ( $ret && !is_wp_error( $ret ) ) {
                wp_redirect('edit-tags.php?message=1#addtag');
        } else {
                wp_redirect('edit-tags.php?message=4#addtag');
        }
        exit;
break;

case 'delete':
        $tag_ID = (int) $_GET['tag_ID'];
        check_admin_referer('delete-tag_' .  $tag_ID);

        if ( !current_user_can('manage_categories') )
                wp_die(__('Cheatin&#8217; uh?'));

        wp_delete_term( $tag_ID, $taxonomy);

        $location = 'edit-tags.php';
        if ( $referer = wp_get_referer() ) {
                if ( false !== strpos($referer, 'edit-tags.php') )
                        $location = $referer;
        }

        $location = add_query_arg('message', 2, $location);
        wp_redirect($location);
        exit;

break;

case 'bulk-delete':
        check_admin_referer('bulk-tags');

        if ( !current_user_can('manage_categories') )
                wp_die(__('Cheatin&#8217; uh?'));

        $tags = $_GET['delete_tags'];
        foreach( (array) $tags as $tag_ID ) {
                wp_delete_term( $tag_ID, $taxonomy);
        }

        $location = 'edit-tags.php';
        if ( $referer = wp_get_referer() ) {
                if ( false !== strpos($referer, 'edit-tags.php') )
                        $location = $referer;
        }

        $location = add_query_arg('message', 6, $location);
        wp_redirect($location);
        exit;

break;

case 'edit':
        $title = __('Edit Tag');

        require_once ('admin-header.php');
        $tag_ID = (int) $_GET['tag_ID'];

        $tag = get_term($tag_ID, $taxonomy, OBJECT, 'edit');
        include('edit-tag-form.php');

break;

case 'editedtag':
        $tag_ID = (int) $_POST['tag_ID'];
        check_admin_referer('update-tag_' . $tag_ID);

        if ( !current_user_can('manage_categories') )
                wp_die(__('Cheatin&#8217; uh?'));

        $ret = wp_update_term($tag_ID, $taxonomy, $_POST);

        $location = 'edit-tags.php';
        if ( $referer = wp_get_original_referer() ) {
                if ( false !== strpos($referer, 'edit-tags.php') )
                        $location = $referer;
        }

        if ( $ret && !is_wp_error( $ret ) )
                $location = add_query_arg('message', 3, $location);
        else
                $location = add_query_arg('message', 5, $location);

        wp_redirect($location);
        exit;
break;

default:

if ( isset($_GET['_wp_http_referer']) && ! empty($_GET['_wp_http_referer']) ) {
         wp_redirect( remove_query_arg( array('_wp_http_referer', '_wpnonce'), stripslashes($_SERVER['REQUEST_URI']) ) );
         exit;
}

$can_manage = current_user_can('manage_categories');

wp_enqueue_script('admin-tags');
if ( $can_manage )
        wp_enqueue_script('inline-edit-tax');

require_once ('admin-header.php');

$messages[1] = __('Tag added.');
$messages[2] = __('Tag deleted.');
$messages[3] = __('Tag updated.');
$messages[4] = __('Tag not added.');
$messages[5] = __('Tag not updated.');
$messages[6] = __('Tags deleted.'); ?>

<div class="wrap nosubsub">
<?php screen_icon(); ?>
<h2><?php echo esc_html( $title );
if ( isset($_GET['s']) && $_GET['s'] )
        printf( '<span class="subtitle">' . __('Search results for &#8220;%s&#8221;') . '</span>', esc_html( stripslashes($_GET['s']) ) ); ?>
</h2>

<?php if ( isset($_GET['message']) && ( $msg = (int) $_GET['message'] ) ) : ?>
<div id="message" class="updated fade"><p><?php echo $messages[$msg]; ?></p></div>
<?php $_SERVER['REQUEST_URI'] = remove_query_arg(array('message'), $_SERVER['REQUEST_URI']);
endif; ?>

<form class="search-form" action="" method="get">
<input type="hidden" name="taxonomy" value="<?php echo esc_attr($taxonomy); ?>" />
<p class="search-box">
        <label class="screen-reader-text" for="tag-search-input"><?php _e( 'Search Tags' ); ?>:</label>
        <input type="text" id="tag-search-input" name="s" value="<?php _admin_search_query(); ?>" />
        <input type="submit" value="<?php esc_attr_e( 'Search Tags' ); ?>" class="button" />
</p>
</form>
<br class="clear" />

<div id="col-container">

<div id="col-right">
<div class="col-wrap">
<form id="posts-filter" action="" method="get">
<input type="hidden" name="taxonomy" value="<?php echo esc_attr($taxonomy); ?>" />
<div class="tablenav">
<?php
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 0;
if ( empty($pagenum) )
        $pagenum = 1;

$tags_per_page = get_user_option('edit_tags_per_page');
if ( empty($tags_per_page) )
        $tags_per_page = 20;
$tags_per_page = apply_filters('edit_tags_per_page', $tags_per_page);
$tags_per_page = apply_filters('tagsperpage', $tags_per_page); // Old filter

$page_links = paginate_links( array(
        'base' => add_query_arg( 'pagenum', '%#%' ),
        'format' => '',
        'prev_text' => __('&laquo;'),
        'next_text' => __('&raquo;'),
        'total' => ceil(wp_count_terms($taxonomy) / $tags_per_page),
        'current' => $pagenum
));

if ( $page_links )
        echo "<div class='tablenav-pages'>$page_links</div>";
?>

<div class="alignleft actions">
<select name="action">
<option value="" selected="selected"><?php _e('Bulk Actions'); ?></option>
<option value="delete"><?php _e('Delete'); ?></option>
</select>
<input type="submit" value="<?php esc_attr_e('Apply'); ?>" name="doaction" id="doaction" class="button-secondary action" />
<?php wp_nonce_field('bulk-tags'); ?>
</div>

<br class="clear" />
</div>

<div class="clear"></div>

<table class="widefat tag fixed" cellspacing="0">
        <thead>
        <tr>
<?php print_column_headers('edit-tags'); ?>
        </tr>
        </thead>

        <tfoot>
        <tr>
<?php print_column_headers('edit-tags', false); ?>
        </tr>
        </tfoot>

        <tbody id="the-list" class="list:tag">
<?php

$searchterms = isset( $_GET['s'] ) ? trim( $_GET['s'] ) : '';

$count = tag_rows( $pagenum, $tags_per_page, $searchterms, $taxonomy );
?>
        </tbody>
</table>

<div class="tablenav">
<?php
if ( $page_links )
        echo "<div class='tablenav-pages'>$page_links</div>";
?>

<div class="alignleft actions">
<select name="action2">
<option value="" selected="selected"><?php _e('Bulk Actions'); ?></option>
<option value="delete"><?php _e('Delete'); ?></option>
</select>
<input type="submit" value="<?php esc_attr_e('Apply'); ?>" name="doaction2" id="doaction2" class="button-secondary action" />
</div>

<br class="clear" />
</div>

<br class="clear" />
</form>
</div>
</div><!-- /col-right -->

<div id="col-left">
<div class="col-wrap">

<div class="tagcloud">
<h3><?php _e('Popular Tags'); ?></h3>
<?php
if ( $can_manage )
        wp_tag_cloud(array('taxonomy' => $taxonomy, 'link' => 'edit'));
else
        wp_tag_cloud(array('taxonomy' => $taxonomy));
?>
</div>

<?php if ( $can_manage ) {
        do_action('add_tag_form_pre'); ?>

<div class="form-wrap">
<h3><?php _e('Add a New Tag'); ?></h3>
<div id="ajax-response"></div>
<form name="addtag" id="addtag" method="post" action="edit-tags.php" class="add:the-list: validate">
<input type="hidden" name="action" value="addtag" />
<input type="hidden" name="taxonomy" value="<?php echo esc_attr($taxonomy); ?>" />
<?php wp_original_referer_field(true, 'previous'); wp_nonce_field('add-tag'); ?>

<div class="form-field form-required">
        <label for="name"><?php _e('Tag name') ?></label>
        <input name="name" id="name" type="text" value="" size="40" aria-required="true" />
        <p><?php _e('The name is how the tag appears on your site.'); ?></p>
</div>

<div class="form-field">
        <label for="slug"><?php _e('Tag slug') ?></label>
        <input name="slug" id="slug" type="text" value="" size="40" />
        <p><?php _e('The &#8220;slug&#8221; is the URL-friendly version of the name. It is usually all lowercase and contains only letters, numbers, and hyphens.'); ?></p>
</div>

<div class="form-field">
        <label for="description"><?php _e('Description') ?></label>
        <textarea name="description" id="description" rows="5" cols="40"></textarea>
    <p><?php _e('The description is not prominent by default, however some themes may show it.'); ?></p>
</div>

<p class="submit"><input type="submit" class="button" name="submit" value="<?php esc_attr_e('Add Tag'); ?>" /></p>
<?php do_action('add_tag_form'); ?>
</form></div>
<?php } ?>

</div>
</div><!-- /col-left -->

</div><!-- /col-container -->
</div><!-- /wrap -->

<?php inline_edit_term_row('edit-tags'); ?>

<?php
break;
}

include('admin-footer.php');

?>