WordPress/wp-admin/media.php

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<?php
require_once('admin.php');
$parent_file = 'edit.php';
$submenu_file = 'upload.php';
wp_reset_vars(array('action'));
switch( $action ) :
case 'editattachment' :
$errors = media_upload_form_handler();
if ( empty($errors) ) {
wp_redirect( add_query_arg( 'message', 'updated' ) );
exit;
break;
}
// no break
case 'edit' :
$title = __('Edit Media');
if ( empty($errors) )
$errors = null;
if ( empty( $_GET['attachment_id'] ) ) {
wp_redirect('upload.php');
exit();
}
$att_id = (int) $_GET['attachment_id'];
$att = get_post($att_id);
add_filter('attachment_fields_to_edit', 'media_single_attachment_fields_to_edit', 10, 2);
wp_enqueue_script( 'wp-ajax-response' );
add_action('admin_head', 'media_admin_css');
require( 'admin-header.php' );
$message = '';
$class = '';
if ( isset($_GET['message']) ) {
switch ( $_GET['message'] ) :
case 'updated' :
$message = __('Media attachment updated.');
$class = 'updated fade';
break;
endswitch;
}
if ( $message )
echo "<div id='message' class='$class'><p>$message</p></div>\n";
?>
<div class="wrap">
<h2><?php _e( 'Edit Media' ); ?></h2>
<form method="post" action="<?php echo clean_url( remove_query_arg( 'message' ) ); ?>" class="media-upload-form" id="media-single-form">
<div id="media-items" class="media-single">
<div id='media-item-<?php echo $att_id; ?>' class='media-item'>
<?php echo get_media_item( $att_id, array( 'toggle' => false, 'send' => false, 'delete' => false, 'errors' => $errors ) ); ?>
</div>
</div>
<p class="submit">
<input type="submit" class="button" name="save" value="<?php _e('Save Changes'); ?>" />
<input type="hidden" name="post_id" id="post_id" value="<?php echo $post_id; ?>" />
<input type="hidden" name="action" value="editattachment" />
<?php wp_nonce_field('media-form'); ?>
</p>
</div>
<?php
require( 'admin-footer.php' );
exit;
default:
wp_redirect( 'upload.php' );
exit;
endswitch;
?>