/
script-manager.php
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/
script-manager.php
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<?php
/*
Plugin Name: Script Manager
Plugin URI: http://www.semiologic.com/software/script-manager/
Description: Lets you insert scripts, on the entire site under <a href="options-general.php?page=script-manager">Settings / Scripts & Meta</a>, and on individual posts and pages in their respective Scripts & Meta boxes.
Version: 1.6
Author: Denis de Bernardy & Mike Koepke
Author URI: https://www.semiologic.com
Text Domain: script-manager
Domain Path: /lang
License: Dual licensed under the MIT and GPLv2 licenses
*/
/*
Terms of use
------------
This software is copyright Denis de Bernardy & Mike Koepke, and is distributed under the terms of the MIT and GPLv2 licenses.
**/
/**
* script_manager
*
* @package Script Manager
**/
class script_manager {
/**
* Plugin instance.
*
* @see get_instance()
* @type object
*/
protected static $instance = NULL;
/**
* URL to this plugin's directory.
*
* @type string
*/
public $plugin_url = '';
/**
* Path to this plugin's directory.
*
* @type string
*/
public $plugin_path = '';
/**
* Access this plugin’s working instance
*
* @wp-hook plugins_loaded
* @return object of this class
*/
public static function get_instance()
{
NULL === self::$instance and self::$instance = new self;
return self::$instance;
}
/**
* Loads translation file.
*
* Accessible to other classes to load different language files (admin and
* front-end for example).
*
* @wp-hook init
* @param string $domain
* @return void
*/
public function load_language( $domain )
{
load_plugin_textdomain(
$domain,
FALSE,
dirname(plugin_basename(__FILE__)) . '/lang'
);
}
/**
* Constructor.
*
*
*/
public function __construct() {
$this->plugin_url = plugins_url( '/', __FILE__ );
$this->plugin_path = plugin_dir_path( __FILE__ );
$this->load_language( 'script-manager' );
add_action( 'plugins_loaded', array ( $this, 'init' ) );
} #script_manager()
/**
* init()
*
* @return void
**/
function init() {
// more stuff: register actions and filters
if ( !is_admin() ) {
add_action('wp_enqueue_scripts', array($this, 'scripts'));
add_action('wp_head', array($this, 'head'), 50);
add_action('wp_footer', array($this, 'footer'), 50);
add_action('wp_footer', array($this, 'onload'), 5000);
$options = script_manager::get_options();
if ( !empty( $options['body'] ) ) {
add_action('init', array($this, 'ob_start'), 10000);
}
}
else {
// more stuff: register actions and filters
add_action('admin_menu', array($this, 'admin_menu'));
add_action('admin_menu', array($this, 'meta_boxes'), 30);
foreach ( array('page-new.php', 'page.php', 'post-new.php', 'post.php', 'settings_page_script-manager') as $hook )
add_action("load-$hook", array($this, 'script_manager_admin'));
}
}
/**
* script_manager_admin()
*
* @return void
**/
function script_manager_admin() {
include_once $this->plugin_path . '/script-manager-admin.php';
}
/**
* admin_menu()
*
* @return void
**/
function admin_menu() {
if ( current_user_can('unfiltered_html') ) {
add_options_page(
__('Script Manager Settings', 'script-manager'),
__('Scripts & Meta', 'script-manager'),
'manage_options',
'script-manager',
array('script_manager_admin', 'edit_options')
);
}
} # admin_menu()
/**
* meta_boxes()
*
* @return void
**/
function meta_boxes() {
if ( current_user_can('unfiltered_html') ) {
if ( current_user_can('edit_posts') )
add_meta_box('script_manager', __('Scripts & Meta', 'script-manager'), array('script_manager_admin', 'edit_entry'), 'post');
if ( current_user_can('edit_pages') )
add_meta_box('script_manager', __('Scripts & Meta', 'script-manager'), array('script_manager_admin', 'edit_entry'), 'page');
}
} # meta_boxes()
/**
* scripts()
*
* @return void
**/
function scripts() {
wp_enqueue_script('jquery');
} # scripts()
/**
* head()
*
* @return void
**/
function head() {
if ( is_singular() ) {
global $wp_the_query;
$post_id = $wp_the_query->get_queried_object_id();
} else {
$post_id = false;
}
$override = $post_id && get_post_meta($post_id, '_scripts_override', true);
if ( $override ) {
$override = get_post_meta($post_id, '_scripts_footer', true)
|| get_post_meta($post_id, '_scripts_head', true)
|| get_post_meta($post_id, '_scripts_onload', true)
|| get_post_meta($post_id, '_scripts_body', true);
}
if ( !$override ) {
$options = script_manager::get_options();
if ( $options['head'] ) {
echo $options['head'] . "\n";
}
}
if ( $post_id && ( $script = get_post_meta($post_id, '_scripts_head', true) ) ) {
echo $script . "\n";
}
} # head()
/**
* footer()
*
* @return void
**/
function footer() {
if ( is_singular() ) {
global $wp_the_query;
$post_id = $wp_the_query->get_queried_object_id();
} else {
$post_id = false;
}
$override = $post_id && get_post_meta($post_id, '_scripts_override', true);
if ( $override ) {
$override = get_post_meta($post_id, '_scripts_footer', true)
|| get_post_meta($post_id, '_scripts_head', true)
|| get_post_meta($post_id, '_scripts_onload', true)
|| get_post_meta($post_id, '_scripts_body', true);
}
if ( !$override ) {
$options = script_manager::get_options();
if ( $options['footer'] ) {
echo '<div class="scripts">' . "\n"
. $options['footer'] . "\n"
. '</div>' . "\n";
}
}
if ( $post_id && ( $script = get_post_meta($post_id, '_scripts_footer', true) ) ) {
echo '<div class="scripts">' . "\n"
. $script . "\n"
. '</div>' . "\n";
}
} # footer()
/**
* onload()
*
* @return void
**/
function onload() {
if ( is_singular() ) {
global $wp_the_query;
$post_id = $wp_the_query->get_queried_object_id();
} else {
$post_id = false;
}
$override = $post_id && get_post_meta($post_id, '_scripts_override', true);
if ( $override ) {
$override = get_post_meta($post_id, '_scripts_footer', true)
|| get_post_meta($post_id, '_scripts_head', true)
|| get_post_meta($post_id, '_scripts_onload', true)
|| get_post_meta($post_id, '_scripts_body', true);
}
if ( !$override ) {
$options = script_manager::get_options();
if ( $options['onload'] ) {
echo <<<EOS
<script type="text/javascript">
jQuery(document).ready(function() {
{$options['onload']}
});
</script>
EOS;
}
}
if ( $post_id && ( $script = get_post_meta($post_id, '_scripts_onload', true) ) ) {
echo <<<EOS
<script type="text/javascript">
jQuery(document).ready(function() {
$script
});
</script>
EOS;
}
} # onload()
/**
* ob_start()
*
* @return void
**/
function ob_start() {
static $done = false;
if ( $done )
return;
ob_start(array($this, 'ob_filter'));
add_action('wp_footer', array($this, 'ob_flush'), 100000);
$done = true;
} # ob_start()
/**
* ob_filter()
*
* @param string $text
* @return string $text
**/
function ob_filter($text) {
$text = preg_replace_callback("/
\s*<body\s+
([^>]*)
>
(.*?)
<\s*\/\s*body\s*>
/isx", array($this, 'ob_filter_callback'), $text);
return $text;
} # ob_filter()
/**
* ob_flush()
*
* @return void
**/
static function ob_flush() {
static $done = true;
if ( $done )
return;
ob_end_flush();
$done = true;
} # ob_flush()
/**
* ob_filter_callback()
*
* @param array $match
* @return string $str
**/
function ob_filter_callback($match) {
# skip empty anchors
if ( !trim($match[2]) )
return $match[0];
$options = script_manager::get_options();
# parse anchor
$body = '<body '
. $match[1]
. '>' . "\n"
. $options['body']
. $match[2]
. '</body>' . "\n";
# return anchor
return $body;
} # ob_filter_callback()
/**
* get_options()
*
* @return array options
**/
static function get_options() {
static $o;
if ( isset($o) && !is_admin() )
return $o;
$o = get_option('script_manager');
if ( $o === false || !isset($o['body']) )
$o = script_manager::init_options();
return $o;
} # get_options()
/**
* init_options()
*
* @return array default options
**/
static function init_options() {
$defaults = array(
'head' => '',
'footer' => '',
'onload' => '',
'body' => '',
);
$o = get_option('script_manager');
if ( !$o )
$o = $defaults;
else
$o = wp_parse_args($o, $defaults);
update_option('script_manager', $o);
return $o;
} # init_options()
} # script_manager
$script_manager = script_manager::get_instance();