root/trunk/wp-admin/categories.php

<?php
/**
 * Categories Management Panel
 *
 * @package WordPress
 * @subpackage Administration
 */

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

$title = __('Categories');

wp_reset_vars( array('action', 'cat') );

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

switch($action) {

case 'addcat':

    check_admin_referer('add-category');

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

    if( wp_insert_category($_POST ) ) {
        wp_redirect('categories.php?message=1#addcat');
    } else {
        wp_redirect('categories.php?message=4#addcat');
    }
    exit;
break;

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

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

    $cat_name = get_catname($cat_ID);

    // Don't delete the default cats.
    if ( $cat_ID == get_option('default_category') )
        wp_die(sprintf(__("Can&#8217;t delete the <strong>%s</strong> category: this is the default one"), $cat_name));

    wp_delete_category($cat_ID);

    wp_redirect('categories.php?message=2');
    exit;

break;

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

    if ( !current_user_can('manage_categories') )
        wp_die( __('You are not allowed to delete categories.') );

    foreach ( (array) $_GET['delete'] as $cat_ID ) {
        $cat_name = get_catname($cat_ID);

        // Don't delete the default cats.
        if ( $cat_ID == get_option('default_category') )
            wp_die(sprintf(__("Can&#8217;t delete the <strong>%s</strong> category: this is the default one"), $cat_name));

        wp_delete_category($cat_ID);
    }

    $sendback = wp_get_referer();

    wp_redirect($sendback);
    exit();

break;
case 'edit':

    $title = __('Edit Category');

    require_once ('admin-header.php');
    $cat_ID = (int) $_GET['cat_ID'];
    $category = get_category_to_edit($cat_ID);
    include('edit-category-form.php');

break;

case 'editedcat':
    $cat_ID = (int) $_POST['cat_ID'];
    check_admin_referer('update-category_' . $cat_ID);

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

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

    if ( wp_update_category($_POST) )
        $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;
}

wp_enqueue_script('admin-categories');
if ( current_user_can('manage_categories') )
    wp_enqueue_script('inline-edit-tax');

require_once ('admin-header.php');

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

<div class="wrap nosubsub">
<h2><?php echo wp_specialchars( $title ); ?></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 topmargin" action="" method="get">
<p class="search-box">
    <label class="hidden" for="category-search-input"><?php _e('Search Categories'); ?>:</label>
    <input type="text" class="search-input" id="category-search-input" name="s" value="<?php _admin_search_query(); ?>" />
    <input type="submit" value="<?php _e( 'Search Categories' ); ?>" 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">
<div class="tablenav">

<?php
$pagenum = isset( $_GET['pagenum'] ) ? absint( $_GET['pagenum'] ) : 0;
if ( empty($pagenum) )
    $pagenum = 1;
if( ! isset( $catsperpage ) || $catsperpage < 0 )
    $catsperpage = 20;

$page_links = paginate_links( array(
    'base' => add_query_arg( 'pagenum', '%#%' ),
    'format' => '',
    'prev_text' => __('&larr;'),
    'next_text' => __('&rarr;'),
    'total' => ceil(wp_count_terms('category') / $catsperpage),
    '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('Actions'); ?></option>
<option value="delete"><?php _e('Delete'); ?></option>
</select>
<input type="submit" value="<?php _e('Apply'); ?>" name="doaction" id="doaction" class="button-secondary action" />
<?php wp_nonce_field('bulk-categories'); ?>
</div>

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

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

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

    <tfoot>
    <tr>
<?php print_column_headers('categories', false); ?>
    </tr>
    </tfoot>

    <tbody id="the-list" class="list:cat">
<?php
cat_rows(0, 0, 0, $pagenum, $catsperpage);
?>
    </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('Actions'); ?></option>
<option value="delete"><?php _e('Delete'); ?></option>
</select>
<input type="submit" value="<?php _e('Apply'); ?>" name="doaction2" id="doaction2" class="button-secondary action" />
<?php wp_nonce_field('bulk-categories'); ?>
</div>

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

</form>

<div class="form-wrap">
<p><?php printf(__('<strong>Note:</strong><br />Deleting a category does not delete the posts in that category. Instead, posts that were only assigned to the deleted category are set to the category <strong>%s</strong>.'), apply_filters('the_category', get_catname(get_option('default_category')))) ?></p>
<p><?php printf(__('Categories can be selectively converted to tags using the <a href="%s">category to tag converter</a>.'), 'admin.php?import=wp-cat2tag') ?></p>
</div>

</div>
</div><!-- /col-right -->

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

<?php if ( current_user_can('manage_categories') ) { ?>
<?php $category = (object) array(); $category->parent = 0; do_action('add_category_form_pre', $category); ?>

<div class="form-wrap">
<h3><?php _e('Add Category'); ?></h3>
<div id="ajax-response"></div>
<form name="addcat" id="addcat" method="post" action="categories.php" class="add:the-list: validate">
<input type="hidden" name="action" value="addcat" />
<?php wp_original_referer_field(true, 'previous'); wp_nonce_field('add-category'); ?>

<div class="form-field form-required">
    <label for="cat_name"><?php _e('Category Name') ?></label>
    <input name="cat_name" id="cat_name" type="text" value="" size="40" aria-required="true" />
    <p><?php _e('The name is used to identify the category almost everywhere, for example under the post or in the category widget.'); ?></p>
</div>

<div class="form-field">
    <label for="category_parent"><?php _e('Category Parent') ?></label>
    <?php wp_dropdown_categories(array('hide_empty' => 0, 'name' => 'category_parent', 'orderby' => 'name', 'selected' => $category->parent, 'hierarchical' => true, 'show_option_none' => __('None'))); ?>
    <p><?php _e('Categories, unlike tags, can have a hierarchy. You might have a Jazz category, and under that have children categories for Bebop and Big Band. Totally optional.'); ?></p>
</div>

<div class="form-field">
    <label for="category_description"><?php _e('Description') ?></label>
    <textarea name="category_description" id="category_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 _e('Add Category'); ?>" /></p>
<?php do_action('edit_category_form', $category); ?>
</form></div>

<?php } ?>

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

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

<script type="text/javascript">
/* <![CDATA[ */
(function($){
    $(document).ready(function(){
        $('#doaction, #doaction2').click(function(){
            if ( $('select[name^="action"]').val() == 'delete' ) {
                var m = '<?php echo js_escape(__("You are about to delete the selected categories.\n  'Cancel' to stop, 'OK' to delete.")); ?>';
                return showNotice.warn(m);
            }
        });
    });
})(jQuery);
/* ]]> */
</script>

<?php
inline_edit_term_row('category');

break;
}

include('admin-footer.php');

?>