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enable-media-replace.php
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enable-media-replace.php
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<?php
/*
Plugin Name: Enable Media Replace
Plugin URI: http://www.mansjonasson.se/enable-media-replace
Description: Enable replacing media files by uploading a new file in the "Edit Media" section of the WordPress Media Library.
Version: 2.8.2
Author: Måns Jonasson
Author URI: http://www.mansjonasson.se
Dual licensed under the MIT and GPL licenses:
http://www.opensource.org/licenses/mit-license.php
http://www.gnu.org/licenses/gpl.html
Developed for .SE (Stiftelsen för Internetinfrastruktur) - http://www.iis.se
*/
/**
* Main Plugin file
* Set action hooks and add shortcode
*
* @author Måns Jonasson <http://www.mansjonasson.se>
* @copyright Måns Jonasson 13 sep 2010
* @package wordpress
* @subpackage enable-media-replace
*
*/
add_action('admin_init', 'enable_media_replace_init');
add_action('admin_menu', 'emr_menu');
add_filter('attachment_fields_to_edit', 'enable_media_replace', 10, 2);
add_shortcode('file_modified', 'emr_get_modified_date');
/**
* Register this file in WordPress so we can call it with a ?page= GET var.
* To suppress it in the menu we give it an empty menu title.
*/
function emr_menu() {
add_submenu_page(NULL, __("Replace media", "enable-media-replace"), '','upload_files', __FILE__, 'emr_options');
}
/**
* Initialize this plugin. Called by 'admin_init' hook.
* Only languages files needs loading during init.
*/
function enable_media_replace_init() {
load_plugin_textdomain( 'enable-media-replace', false, dirname( plugin_basename( __FILE__ ) ) );
}
/**
* Add some new fields to the attachment edit panel.
* @param array form fields edit panel
* @return array form fields with enable-media-replace fields added
*/
function enable_media_replace( $form_fields, $post ) {
// Check if we are on media upload screen for insertion of replace link
$on_media_edit_screen = false;
$current_wp_version = get_bloginfo('version');
if ($current_wp_version < 3.5) {
if (isset($_GET["attachment_id"]) && $_GET["attachment_id"]) { $on_media_edit_screen = true; }
}
else {
$current_screen = get_current_screen();
if ( !is_null($current_screen) && $current_screen->base == 'post' && $current_screen->post_type == 'attachment' ) { $on_media_edit_screen = true; }
}
if ($on_media_edit_screen == true) {
$url = admin_url( "upload.php?page=enable-media-replace/enable-media-replace.php&action=media_replace&attachment_id=" . $post->ID);
$action = "media_replace";
$editurl = wp_nonce_url( $url, $action );
if (FORCE_SSL_ADMIN) {
$editurl = str_replace("http:", "https:", $editurl);
}
$link = "href=\"$editurl\"";
$form_fields["enable-media-replace"] = array("label" => __("Replace media", "enable-media-replace"), "input" => "html", "html" => "<p><a class='button-secondary'$link>" . __("Upload a new file", "enable-media-replace") . "</a></p>", "helps" => __("To replace the current file, click the link and upload a replacement.", "enable-media-replace"));
}
return $form_fields;
}
/**
* Load the replace media panel.
* Panel is show on the action 'media-replace' and a given attachement.
* Called by GET var ?page=enable-media-replace/enable-media-replace.php
*/
function emr_options() {
if ( isset( $_GET['action'] ) && $_GET['action'] == 'media_replace' ) {
check_admin_referer( 'media_replace' ); // die if invalid or missing nonce
if ( array_key_exists("attachment_id", $_GET) && (int) $_GET["attachment_id"] > 0) {
include("popup.php");
}
}
if ( isset( $_GET['action'] ) && $_GET['action'] == 'media_replace_upload' ) {
$plugin_url = str_replace("enable-media-replace.php", "", __FILE__);
check_admin_referer( 'media_replace_upload' ); // die if invalid or missing nonce
require_once($plugin_url . "upload.php");
}
}
/**
* Shorttag function to show the media file modification date/time.
* @param array shorttag attributes
* @return string content / replacement shorttag
*/
function emr_get_modified_date($atts) {
$id=0;
$format= '';
extract(shortcode_atts(array(
'id' => '',
'format' => get_option('date_format') . " " . get_option('time_format'),
), $atts));
if ($id == '') return false;
// Get path to file
$current_file = get_attached_file($id, true);
// Get file modification time
$filetime = filemtime($current_file);
// Do timezone magic to get around UTC
$timezone = date_default_timezone_get();
date_default_timezone_set(get_option('timezone_string'));
// do date conversion
$content = date($format, $filetime);
// Set timezone back to default
date_default_timezone_set($timezone);
return $content;
}
?>