158 lines
4.2 KiB
PHP
158 lines
4.2 KiB
PHP
<?php
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/**
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* BackPress script procedural API.
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*
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* @package BackPress
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* @since r16
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*/
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/**
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* Prints script tags in document head.
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*
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* Called by admin-header.php and by wp_head hook. Since it is called by wp_head
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* on every page load, the function does not instantiate the WP_Scripts object
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* unless script names are explicitly passed. Does make use of already
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* instantiated $wp_scripts if present. Use provided wp_print_scripts hook to
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* register/enqueue new scripts.
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*
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* @since r16
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* @see WP_Dependencies::print_scripts()
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*/
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function wp_print_scripts( $handles = false ) {
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do_action( 'wp_print_scripts' );
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if ( '' === $handles ) // for wp_head
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$handles = false;
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global $wp_scripts;
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if ( !is_a($wp_scripts, 'WP_Scripts') ) {
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if ( !$handles )
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return array(); // No need to instantiate if nothing is there.
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else
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$wp_scripts = new WP_Scripts();
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}
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return $wp_scripts->do_items( $handles );
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}
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/**
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* Register new Javascript file.
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*
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* @since r16
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* @param string $handle Script name
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* @param string $src Script url
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* @param array $deps (optional) Array of script names on which this script depends
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* @param string|bool $ver (optional) Script version (used for cache busting), set to NULL to disable
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* @param bool $in_footer (optional) Whether to enqueue the script before </head> or before </body>
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* @return null
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*/
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function wp_register_script( $handle, $src, $deps = array(), $ver = false, $in_footer = false ) {
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global $wp_scripts;
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if ( !is_a($wp_scripts, 'WP_Scripts') )
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$wp_scripts = new WP_Scripts();
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$wp_scripts->add( $handle, $src, $deps, $ver );
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if ( $in_footer )
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$wp_scripts->add_data( $handle, 'group', 1 );
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}
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/**
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* Adds extra Javascript.
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*
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* Works only if the script has already been added.
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* Accepts an associative array $data and creates JS object:
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* "$name" = {
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* key: value,
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* key: value,
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* ...
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* }
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* The $name is passed directly so it should be qualified JS variable /[a-zA-Z0-9_]+/
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* The $data array is JSON encoded. If called more than once for the same $handle, with the same $name,
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* the object would contain all values. In that case if two or more keys are the same,
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* the first value is kept and subsequent values are ignored.
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*
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* @since 3.3
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* @see WP_Scripts::add_script_data()
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*/
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function wp_add_script_data( $handle, $name, $data ) {
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global $wp_scripts;
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if ( !is_a($wp_scripts, 'WP_Scripts') )
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return false;
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return $wp_scripts->add_script_data( $handle, $name, $data );
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}
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/**
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* Remove a registered script.
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*
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* @since r16
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* @see WP_Scripts::remove() For parameter information.
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*/
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function wp_deregister_script( $handle ) {
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global $wp_scripts;
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if ( !is_a($wp_scripts, 'WP_Scripts') )
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$wp_scripts = new WP_Scripts();
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$wp_scripts->remove( $handle );
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}
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/**
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* Enqueues script.
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*
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* Registers the script if src provided (does NOT overwrite) and enqueues.
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*
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* @since r16
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* @see wp_register_script() For parameter information.
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*/
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function wp_enqueue_script( $handle, $src = false, $deps = array(), $ver = false, $in_footer = false ) {
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global $wp_scripts;
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if ( !is_a($wp_scripts, 'WP_Scripts') )
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$wp_scripts = new WP_Scripts();
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if ( $src ) {
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$_handle = explode('?', $handle);
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$wp_scripts->add( $_handle[0], $src, $deps, $ver );
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if ( $in_footer )
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$wp_scripts->add_data( $_handle[0], 'group', 1 );
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}
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$wp_scripts->enqueue( $handle );
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}
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/**
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* Remove an enqueued script.
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*
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* @since WP 3.1
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* @see WP_Scripts::dequeue() For parameter information.
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*/
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function wp_dequeue_script( $handle ) {
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global $wp_scripts;
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if ( !is_a($wp_scripts, 'WP_Scripts') )
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$wp_scripts = new WP_Scripts();
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$wp_scripts->dequeue( $handle );
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}
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/**
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* Check whether script has been added to WordPress Scripts.
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*
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* The values for list defaults to 'queue', which is the same as enqueue for
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* scripts.
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*
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* @since WP unknown; BP unknown
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*
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* @param string $handle Handle used to add script.
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* @param string $list Optional, defaults to 'queue'. Others values are 'registered', 'queue', 'done', 'to_do'
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* @return bool
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*/
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function wp_script_is( $handle, $list = 'queue' ) {
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global $wp_scripts;
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if ( !is_a($wp_scripts, 'WP_Scripts') )
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$wp_scripts = new WP_Scripts();
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$query = $wp_scripts->query( $handle, $list );
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if ( is_object( $query ) )
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return true;
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return $query;
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}
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