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<?php
class WP_Scripts {
var $scripts = array();
var $queue = array();
var $printed = array();
var $args = array();
function WP_Scripts() {
$this->default_scripts();
}
function default_scripts() {
$this->add( 'dbx', '/wp-includes/js/dbx.js', false, '2.05' );
$this->add( 'fat', '/wp-includes/js/fat.js', false, '1.0-RC1_3660' );
$this->add( 'sack', '/wp-includes/js/tw-sack.js', false, '1.6.1' );
$this->add( 'quicktags', '/wp-includes/js/quicktags.js', false, '3517' );
$this->add( 'colorpicker', '/wp-includes/js/colorpicker.js', false, '3517' );
$this->add( 'tiny_mce', '/wp-includes/js/tinymce/tiny_mce_gzip.php', false, '08152006' );
$this->add( 'wp_tiny_mce', '/wp-includes/js/tinymce/tiny_mce_config.php', array('tiny_mce'), '04162006' );
$this->add( 'prototype', '/wp-includes/js/prototype.js', false, '1.5.0');
$this->add( 'autosave', '/wp-includes/js/autosave.js.php', array('prototype', 'sack'), '4102');
if ( is_admin() ) {
$this->add( 'dbx-admin-key', '/wp-admin/dbx-admin-key-js.php', array('dbx'), '3651' );
$this->add( 'listman', '/wp-admin/list-manipulation-js.php', array('sack', 'fat'), '4042' ); // Make changeset # the correct one
$this->add( 'ajaxcat', '/wp-admin/cat-js.php', array('listman'), '3684' );
$this->add( 'admin-categories', '/wp-admin/categories.js', array('listman'), '3684' );
$this->add( 'admin-custom-fields', '/wp-admin/custom-fields.js', array('listman'), '3733' );
$this->add( 'admin-comments', '/wp-admin/edit-comments.js', array('listman'), '3850' ); // Make changeset # the correct one
$this->add( 'admin-users', '/wp-admin/users.js', array('listman'), '3684' );
$this->add( 'xfn', '/wp-admin/xfn.js', false, '3517' );
}
}
/**
* Prints script tags
*
* Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
*
* @param mixed handles (optional) Scripts to be printed. (void) prints queue, (string) prints that script, (array of strings) prints those scripts.
* @return array Scripts that have been printed
*/
function print_scripts( $handles = false ) {
// Print the queue if nothing is passed. If a string is passed, print that script. If an array is passed, print those scripts.
$handles = false === $handles ? $this->queue : (array) $handles;
$handles = $this->all_deps( $handles );
$this->_print_scripts( $handles );
return $this->printed;
}
/**
* Internally used helper function for printing script tags
*
* @param array handles Hierarchical array of scripts to be printed
* @see WP_Scripts::all_deps()
*/
function _print_scripts( $handles ) {
global $wp_db_version;
foreach( array_keys($handles) as $handle ) {
if ( !$handles[$handle] )
return;
elseif ( is_array($handles[$handle]) )
$this->_print_scripts( $handles[$handle] );
if ( !in_array($handle, $this->printed) && isset($this->scripts[$handle]) ) {
$ver = $this->scripts[$handle]->ver ? $this->scripts[$handle]->ver : $wp_db_version;
if ( isset($this->args[$handle]) )
$ver .= '&' . $this->args[$handle];
$src = 0 === strpos($this->scripts[$handle]->src, 'http://') ? $this->scripts[$handle]->src : get_settings( 'siteurl' ) . $this->scripts[$handle]->src;
echo "<script type='text/javascript' src='$src?ver=$ver'></script>\n";
$this->printed[] = $handle;
}
}
}
/**
* Determines dependencies of scripts
*
* Recursively builds hierarchical array of script dependencies. Does NOT catch infinite loops.
*
* @param mixed handles Accepts (string) script name or (array of strings) script names
* @param bool recursion Used internally when function calls itself
* @return array Hierarchical array of dependencies
*/
function all_deps( $handles, $recursion = false ) {
if ( ! $handles = (array) $handles )
return array();
$return = array();
foreach ( $handles as $handle ) {
$handle = explode('?', $handle);
if ( isset($handle[1]) )
$this->args[$handle[0]] = $handle[1];
$handle = $handle[0];
if ( is_null($return[$handle]) ) // Prime the return array with $handles
$return[$handle] = true;
if ( $this->scripts[$handle]->deps ) {
if ( false !== $return[$handle] && array_diff($this->scripts[$handle]->deps, array_keys($this->scripts)) )
$return[$handle] = false; // Script required deps which don't exist
else
$return[$handle] = $this->all_deps( $this->scripts[$handle]->deps, true ); // Build the hierarchy
}
if ( $recursion && false === $return[$handle] )
return false; // Cut the branch
}
return $return;
}
/**
* Adds script
*
* Adds the script only if no script of that name already exists
*
* @param string handle Script name
* @param string src Script url
* @param array deps (optional) Array of script names on which this script depends
* @param string ver (optional) Script version (used for cache busting)
* @return array Hierarchical array of dependencies
*/
function add( $handle, $src, $deps = array(), $ver = false ) {
if ( isset($this->scripts[$handle]) )
return false;
$this->scripts[$handle] = new _WP_Script( $handle, $src, $deps, $ver );
return true;
}
function remove( $handles ) {
foreach ( (array) $handles as $handle )
unset($this->scripts[$handle]);
}
function enqueue( $handles ) {
foreach ( (array) $handles as $handle ) {
$handle = explode('?', $handle);
if ( !in_array($handle[0], $this->queue) && isset($this->scripts[$handle[0]]) ) {
$this->queue[] = $handle[0];
if ( isset($handle[1]) )
$this->args[$handle[0]] = $handle[1];
}
}
}
function dequeue( $handles ) {
foreach ( (array) $handles as $handle )
unset( $this->queue[$handle] );
}
function query( $handle, $list = 'scripts' ) { // scripts, queue, or printed
switch ( $list ) :
case 'scripts':
if ( isset($this->scripts[$handle]) )
return $this->scripts[$handle];
break;
default:
if ( in_array($handle, $this->$list) )
return true;
break;
endswitch;
return false;
}
}
class _WP_Script {
var $handle;
var $src;
var $deps = array();
var $ver = false;
var $args = false;
function _WP_Script() {
@list($this->handle, $this->src, $this->deps, $this->ver) = func_get_args();
if ( !is_array($this->deps) )
$this->deps = array();
if ( !$this->ver )
$this->ver = false;
}
}
/**
* Prints script tags in document head
*
* Called by admin-header.php and by wp_head hook. Since it is called by wp_head on every page load,
* the function does not instantiate the WP_Scripts object unless script names are explicitly passed.
* Does make use of already instantiated $wp_scripts if present.
* Use provided wp_print_scripts hook to register/enqueue new scripts.
*
* @see WP_Scripts::print_scripts()
*/
function wp_print_scripts( $handles = false ) {
do_action( 'wp_print_scripts' );
global $wp_scripts;
if ( !is_a($wp_scripts, 'WP_Scripts') ) {
if ( !$handles )
return array(); // No need to instantiate if nothing's there.
else
$wp_scripts = new WP_Scripts();
}
return $wp_scripts->print_scripts( $handles );
}
function wp_register_script( $handle, $src, $deps = array(), $ver = false ) {
global $wp_scripts;
if ( !is_a($wp_scripts, 'WP_Scripts') )
$wp_scripts = new WP_Scripts();
$wp_scripts->add( $handle, $src, $deps, $ver );
}
function wp_deregister_script( $handle ) {
global $wp_scripts;
if ( !is_a($wp_scripts, 'WP_Scripts') )
$wp_scripts = new WP_Scripts();
$wp_scripts->remove( $handle );
}
/**
* Equeues script
*
* Registers the script if src provided (does NOT overwrite) and enqueues.
*
* @see WP_Script::add(), WP_Script::enqueue()
*/
function wp_enqueue_script( $handle, $src = false, $deps = array(), $ver = false ) {
global $wp_scripts;
if ( !is_a($wp_scripts, 'WP_Scripts') )
$wp_scripts = new WP_Scripts();
if ( $src ) {
$_handle = explode('?', $handle);
$wp_scripts->add( $_handle[0], $src, $deps, $ver );
}
$wp_scripts->enqueue( $handle );
}
?>
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