init();
add_action( 'init', array( $this, 'init' ), 0 );
}
/**
* Initialize the class.
*
* @since 3.4.0
*/
public function init() {
/**
* Fires when the WP_Scripts instance is initialized.
*
* @since 2.6.0
*
* @param WP_Scripts $wp_scripts WP_Scripts instance (passed by reference).
*/
do_action_ref_array( 'wp_default_scripts', array( &$this ) );
}
/**
* Prints scripts.
*
* Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
*
* @since 2.1.0
* @since 2.8.0 Added the `$group` parameter.
*
* @param string|string[]|false $handles Optional. Scripts to be printed: queue (false),
* single script (string), or multiple scripts (array of strings).
* Default false.
* @param int|false $group Optional. Group level: level (int), no groups (false).
* Default false.
* @return string[] Handles of scripts that have been printed.
*/
public function print_scripts( $handles = false, $group = false ) {
return $this->do_items( $handles, $group );
}
/**
* Prints extra scripts of a registered script.
*
* @since 2.1.0
* @since 2.8.0 Added the `$display` parameter.
* @deprecated 3.3.0
*
* @see print_extra_script()
*
* @param string $handle The script's registered handle.
* @param bool $display Optional. Whether to print the extra script
* instead of just returning it. Default true.
* @return bool|string|void Void if no data exists, extra scripts if `$display` is true,
* true otherwise.
*/
public function print_scripts_l10n( $handle, $display = true ) {
_deprecated_function( __FUNCTION__, '3.3.0', 'WP_Scripts::print_extra_script()' );
return $this->print_extra_script( $handle, $display );
}
/**
* Prints extra scripts of a registered script.
*
* @since 3.3.0
*
* @param string $handle The script's registered handle.
* @param bool $display Optional. Whether to print the extra script
* instead of just returning it. Default true.
* @return bool|string|void Void if no data exists, extra scripts if `$display` is true,
* true otherwise.
*/
public function print_extra_script( $handle, $display = true ) {
$output = $this->get_data( $handle, 'data' );
if ( ! $output ) {
return;
}
if ( ! $display ) {
return $output;
}
wp_print_inline_script_tag( $output, array( 'id' => "{$handle}-js-extra" ) );
return true;
}
/**
* Checks whether all dependents of a given handle are in the footer.
*
* If there are no dependents, this is considered the same as if all dependents were in the footer.
*
* @since 6.4.0
*
* @param string $handle Script handle.
* @return bool Whether all dependents are in the footer.
*/
private function are_all_dependents_in_footer( $handle ) {
foreach ( $this->get_dependents( $handle ) as $dep ) {
if ( isset( $this->groups[ $dep ] ) && 0 === $this->groups[ $dep ] ) {
return false;
}
}
return true;
}
/**
* Processes a script dependency.
*
* @since 2.6.0
* @since 2.8.0 Added the `$group` parameter.
*
* @see WP_Dependencies::do_item()
*
* @param string $handle The script's registered handle.
* @param int|false $group Optional. Group level: level (int), no groups (false).
* Default false.
* @return bool True on success, false on failure.
*/
public function do_item( $handle, $group = false ) {
if ( ! parent::do_item( $handle ) ) {
return false;
}
if ( 0 === $group && $this->groups[ $handle ] > 0 ) {
$this->in_footer[] = $handle;
return false;
}
if ( false === $group && in_array( $handle, $this->in_footer, true ) ) {
$this->in_footer = array_diff( $this->in_footer, (array) $handle );
}
$obj = $this->registered[ $handle ];
if ( null === $obj->ver ) {
$ver = '';
} else {
$ver = $obj->ver ? $obj->ver : $this->default_version;
}
if ( isset( $this->args[ $handle ] ) ) {
$ver = $ver ? $ver . '&' . $this->args[ $handle ] : $this->args[ $handle ];
}
$src = $obj->src;
$strategy = $this->get_eligible_loading_strategy( $handle );
$intended_strategy = (string) $this->get_data( $handle, 'strategy' );
$ie_conditional_prefix = '';
$ie_conditional_suffix = '';
$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
if ( ! $this->is_delayed_strategy( $intended_strategy ) ) {
$intended_strategy = '';
}
/*
* Move this script to the footer if:
* 1. The script is in the header group.
* 2. The current output is the header.
* 3. The intended strategy is delayed.
* 4. The actual strategy is not delayed.
* 5. All dependent scripts are in the footer.
*/
if (
0 === $group &&
0 === $this->groups[ $handle ] &&
$intended_strategy &&
! $this->is_delayed_strategy( $strategy ) &&
$this->are_all_dependents_in_footer( $handle )
) {
$this->in_footer[] = $handle;
return false;
}
if ( $conditional ) {
$ie_conditional_prefix = "\n";
}
$before_script = $this->get_inline_script_tag( $handle, 'before' );
$after_script = $this->get_inline_script_tag( $handle, 'after' );
if ( $before_script || $after_script ) {
$inline_script_tag = $ie_conditional_prefix . $before_script . $after_script . $ie_conditional_suffix;
} else {
$inline_script_tag = '';
}
/*
* Prevent concatenation of scripts if the text domain is defined
* to ensure the dependency order is respected.
*/
$translations_stop_concat = ! empty( $obj->textdomain );
$translations = $this->print_translations( $handle, false );
if ( $translations ) {
$translations = wp_get_inline_script_tag( $translations, array( 'id' => "{$handle}-js-translations" ) );
}
if ( $this->do_concat ) {
/**
* Filters the script loader source.
*
* @since 2.2.0
*
* @param string $src Script loader source path.
* @param string $handle Script handle.
*/
$filtered_src = apply_filters( 'script_loader_src', $src, $handle );
if (
$this->in_default_dir( $filtered_src )
&& ( $before_script || $after_script || $translations_stop_concat || $this->is_delayed_strategy( $strategy ) )
) {
$this->do_concat = false;
// Have to print the so-far concatenated scripts right away to maintain the right order.
_print_scripts();
$this->reset();
} elseif ( $this->in_default_dir( $filtered_src ) && ! $conditional ) {
$this->print_code .= $this->print_extra_script( $handle, false );
$this->concat .= "$handle,";
$this->concat_version .= "$handle$ver";
return true;
} else {
$this->ext_handles .= "$handle,";
$this->ext_version .= "$handle$ver";
}
}
$has_conditional_data = $conditional && $this->get_data( $handle, 'data' );
if ( $has_conditional_data ) {
echo $ie_conditional_prefix;
}
$this->print_extra_script( $handle );
if ( $has_conditional_data ) {
echo $ie_conditional_suffix;
}
// A single item may alias a set of items, by having dependencies, but no source.
if ( ! $src ) {
if ( $inline_script_tag ) {
if ( $this->do_concat ) {
$this->print_html .= $inline_script_tag;
} else {
echo $inline_script_tag;
}
}
return true;
}
if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && str_starts_with( $src, $this->content_url ) ) ) {
$src = $this->base_url . $src;
}
if ( ! empty( $ver ) ) {
$src = add_query_arg( 'ver', $ver, $src );
}
/** This filter is documented in wp-includes/class-wp-scripts.php */
$src = esc_url_raw( apply_filters( 'script_loader_src', $src, $handle ) );
if ( ! $src ) {
return true;
}
$attr = array(
'src' => $src,
'id' => "{$handle}-js",
);
if ( $strategy ) {
$attr[ $strategy ] = true;
}
if ( $intended_strategy ) {
$attr['data-wp-strategy'] = $intended_strategy;
}
$tag = $translations . $ie_conditional_prefix . $before_script;
$tag .= wp_get_script_tag( $attr );
$tag .= $after_script . $ie_conditional_suffix;
/**
* Filters the HTML script tag of an enqueued script.
*
* @since 4.1.0
*
* @param string $tag The `