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<?php
/**
* BackPress Styles enqueue.
*
* These classes were refactored from the WordPress WP_Scripts and WordPress
* script enqueue API.
*
* @package BackPress
* @since r74
*/
/**
* BackPress Styles enqueue class.
*
* @package BackPress
* @uses WP_Dependencies
* @since r74
*/
class WP_Styles extends WP_Dependencies {
public $base_url;
public $content_url;
public $default_version;
public $text_direction = 'ltr';
public $concat = '';
public $concat_version = '';
public $do_concat = false;
public $print_html = '';
public $print_code = '';
public $default_dirs;
public function __construct() {
/**
* Fires when the WP_Styles instance is initialized.
*
* @since 2.6.0
*
* @param WP_Styles &$this WP_Styles instance, passed by reference.
*/
do_action_ref_array( 'wp_default_styles', array(&$this) );
}
/**
* @param string $handle
* @return bool
*/
public function do_item( $handle ) {
if ( !parent::do_item($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];
if ( $this->do_concat ) {
if ( $this->in_default_dir($obj->src) && !isset($obj->extra['conditional']) && !isset($obj->extra['alt']) ) {
$this->concat .= "$handle,";
$this->concat_version .= "$handle$ver";
$this->print_code .= $this->print_inline_style( $handle, false );
return true;
}
}
if ( isset($obj->args) )
$media = esc_attr( $obj->args );
else
$media = 'all';
$href = $this->_css_href( $obj->src, $ver, $handle );
if ( empty( $href ) ) {
// Turns out there is nothing to print.
return true;
}
$rel = isset($obj->extra['alt']) && $obj->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';
$title = isset($obj->extra['title']) ? "title='" . esc_attr( $obj->extra['title'] ) . "'" : '';
/**
* Filter the HTML link tag of an enqueued style.
*
* @since 2.6.0
*
* @param string The link tag for the enqueued style.
* @param string $handle The style's registered handle.
*/
$tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );
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( $obj->src , $ver, "$handle-rtl" ));
} else {
$rtl_href = $this->_css_href( $obj->extra['rtl'], $ver, "$handle-rtl" );
}
/** This filter is documented in wp-includes/class.wp-styles.php */
$rtl_tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );
if ( $obj->extra['rtl'] === 'replace' ) {
$tag = $rtl_tag;
} else {
$tag .= $rtl_tag;
}
}
$conditional_pre = $conditional_post = '';
if ( isset( $obj->extra['conditional'] ) && $obj->extra['conditional'] ) {
$conditional_pre = "<!--[if {$obj->extra['conditional']}]>\n";
$conditional_post = "<![endif]-->\n";
}
if ( $this->do_concat ) {
$this->print_html .= $conditional_pre;
$this->print_html .= $tag;
if ( $inline_style = $this->print_inline_style( $handle, false ) ) {
$this->print_html .= sprintf( "<style id='%s-inline-css' type='text/css'>\n%s\n</style>\n", esc_attr( $handle ), $inline_style );
}
$this->print_html .= $conditional_post;
} else {
echo $conditional_pre;
echo $tag;
$this->print_inline_style( $handle );
echo $conditional_post;
}
return true;
}
/**
* @param string $handle
* @param string $code
*/
public function add_inline_style( $handle, $code ) {
if ( ! $code ) {
return false;
}
$after = $this->get_data( $handle, 'after' );
if ( ! $after ) {
$after = array();
}
$after[] = $code;
return $this->add_data( $handle, 'after', $after );
}
/**
* @param string $handle
* @param bool $echo
* @return bool
*/
public function print_inline_style( $handle, $echo = true ) {
$output = $this->get_data( $handle, 'after' );
if ( empty( $output ) ) {
return false;
}
$output = implode( "\n", $output );
if ( ! $echo ) {
return $output;
}
printf( "<style id='%s-inline-css' type='text/css'>\n%s\n</style>\n", esc_attr( $handle ), $output );
return true;
}
/**
* @param mixed $handles
* @param bool $recursion
* @param mixed $group
* @return bool
*/
public function all_deps( $handles, $recursion = false, $group = false ) {
$r = parent::all_deps( $handles, $recursion );
if ( !$recursion ) {
/**
* Filter the array of enqueued styles before processing for output.
*
* @since 2.6.0
*
* @param array $to_do The list of enqueued styles about to be processed.
*/
$this->to_do = apply_filters( 'print_styles_array', $this->to_do );
}
return $r;
}
/**
* @param string $src
* @param string $ver
* @param string $handle
* @return string
*/
public function _css_href( $src, $ver, $handle ) {
if ( !is_bool($src) && !preg_match('|^(https?:)?//|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
$src = $this->base_url . $src;
}
if ( !empty($ver) )
$src = add_query_arg('ver', $ver, $src);
/**
* Filter an enqueued style's fully-qualified URL.
*
* @since 2.6.0
*
* @param string $src The source URL of the enqueued style.
* @param string $handle The style's registered handle.
*/
$src = apply_filters( 'style_loader_src', $src, $handle );
return esc_url( $src );
}
/**
* @param string $src
* @return bool
*/
public function in_default_dir($src) {
if ( ! $this->default_dirs )
return true;
foreach ( (array) $this->default_dirs as $test ) {
if ( 0 === strpos($src, $test) )
return true;
}
return false;
}
public function do_footer_items() { // HTML 5 allows styles in the body, grab late enqueued items and output them in the footer.
$this->do_items(false, 1);
return $this->done;
}
public function reset() {
$this->do_concat = false;
$this->concat = '';
$this->concat_version = '';
$this->print_html = '';
}
}
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