WordPress/wp-admin/media-upload.php

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<?php
/**
* Manage media uploaded file.
*
* There are many filters in here for media. Plugins can extend functionality
* by hooking into the filters.
*
* @package WordPress
* @subpackage Administration
*/
if ( ! isset( $_GET['inline'] ) )
define( 'IFRAME_REQUEST' , true );
/** Load WordPress Administration Bootstrap */
require_once( dirname( __FILE__ ) . '/admin.php' );
if (!current_user_can('upload_files'))
wp_die(__('You do not have permission to upload files.'));
wp_enqueue_script('plupload-handlers');
wp_enqueue_script('image-edit');
wp_enqueue_script('set-post-thumbnail' );
wp_enqueue_style('imgareaselect');
wp_enqueue_script( 'media-gallery' );
@header('Content-Type: ' . get_option('html_type') . '; charset=' . get_option('blog_charset'));
// IDs should be integers
$ID = isset($ID) ? (int) $ID : 0;
$post_id = isset($post_id)? (int) $post_id : 0;
// Require an ID for the edit screen
if ( isset($action) && $action == 'edit' && !$ID )
wp_die( __( 'Cheatin&#8217; uh?' ) );
if ( ! empty( $_REQUEST['post_id'] ) && ! current_user_can( 'edit_post' , $_REQUEST['post_id'] ) )
wp_die( __( 'Cheatin&#8217; uh?' ) );
// upload type: image, video, file, ..?
if ( isset($_GET['type']) )
$type = strval($_GET['type']);
else
$type = apply_filters('media_upload_default_type', 'file');
// tab: gallery, library, or type-specific
if ( isset($_GET['tab']) ) {
$tab = strval($_GET['tab']);
} else {
/**
* Filter the default tab in the legacy (pre-3.5.0) media popup.
*
* @since 2.5.0
*
* @param string $type The default media popup tab.
*/
$tab = apply_filters( 'media_upload_default_tab', 'type' );
}
$body_id = 'media-upload';
// let the action code decide how to handle the request
if ( $tab == 'type' || $tab == 'type_url' || ! array_key_exists( $tab , media_upload_tabs() ) )
do_action("media_upload_$type");
else
do_action("media_upload_$tab");