Source
File: wp-includes/class.wp-styles.php
public function do_item( $handle, $group = false ) {
if ( ! parent::do_item( $handle ) ) {
return false;
}
$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;
$cond_before = '';
$cond_after = '';
$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
if ( $conditional ) {
$cond_before = "<!--[if {$conditional}]>\n";
$cond_after = "<![endif]-->\n";
}
$inline_style = $this->print_inline_style( $handle, false );
if ( $inline_style ) {
$inline_style_tag = sprintf(
"<style id='%s-inline-css'%s>\n%s\n</style>\n",
esc_attr( $handle ),
$this->type_attr,
$inline_style
);
} else {
$inline_style_tag = '';
}
if ( $this->do_concat ) {
if ( $this->in_default_dir( $src ) && ! $conditional && ! isset( $obj->extra['alt'] ) ) {
$this->concat .= "$handle,";
$this->concat_version .= "$handle$ver";
$this->print_code .= $inline_style;
return true;
}
}
if ( isset( $obj->args ) ) {
$media = esc_attr( $obj->args );
} else {
$media = 'all';
}
// A single item may alias a set of items, by having dependencies, but no source.
if ( ! $src ) {
if ( $inline_style_tag ) {
if ( $this->do_concat ) {
$this->print_html .= $inline_style_tag;
} else {
echo $inline_style_tag;
}
}
return true;
}
$href = $this->_css_href( $src, $ver, $handle );
if ( ! $href ) {
return true;
}
$rel = isset( $obj->extra['alt'] ) && $obj->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';
$title = isset( $obj->extra['title'] ) ? sprintf( "title='%s'", esc_attr( $obj->extra['title'] ) ) : '';
$tag = sprintf(
"<link rel='%s' id='%s-css' %s href='%s'%s media='%s' />\n",
$rel,
$handle,
$title,
$href,
$this->type_attr,
$media
);
/**
* Filters the HTML link tag of an enqueued style.
*
* @since 2.6.0
* @since 4.3.0 Introduced the `$href` parameter.
* @since 4.5.0 Introduced the `$media` parameter.
*
* @param string $html The link tag for the enqueued style.
* @param string $handle The style's registered handle.
* @param string $href The stylesheet's source URL.
* @param string $media The stylesheet's media attribute.
*/
$tag = apply_filters( 'style_loader_tag', $tag, $handle, $href, $media );
if ( 'rtl' === $this->text_direction && isset( $obj->extra['rtl'] ) && $obj->extra['rtl'] ) {
if ( is_bool( $obj->extra['rtl'] ) || 'replace' === $obj->extra['rtl'] ) {
$suffix = isset( $obj->extra['suffix'] ) ? $obj->extra['suffix'] : '';
$rtl_href = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $this->_css_href( $src, $ver, "$handle-rtl" ) );
} else {
$rtl_href = $this->_css_href( $obj->extra['rtl'], $ver, "$handle-rtl" );
}
$rtl_tag = sprintf(
"<link rel='%s' id='%s-rtl-css' %s href='%s'%s media='%s' />\n",
$rel,
$handle,
$title,
$rtl_href,
$this->type_attr,
$media
);
/** This filter is documented in wp-includes/class.wp-styles.php */
$rtl_tag = apply_filters( 'style_loader_tag', $rtl_tag, $handle, $rtl_href, $media );
if ( 'replace' === $obj->extra['rtl'] ) {
$tag = $rtl_tag;
} else {
$tag .= $rtl_tag;
}
}
if ( $this->do_concat ) {
$this->print_html .= $cond_before;
$this->print_html .= $tag;
if ( $inline_style_tag ) {
$this->print_html .= $inline_style_tag;
}
$this->print_html .= $cond_after;
} else {
echo $cond_before;
echo $tag;
$this->print_inline_style( $handle );
echo $cond_after;
}
return true;
}