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