413 lines
9.7 KiB
PHP
413 lines
9.7 KiB
PHP
<?php
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/**
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* Dependencies API: WP_Styles class
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*
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* @since 2.6.0
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*
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* @package WordPress
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* @subpackage Dependencies
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*/
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/**
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* Core class used to register styles.
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*
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* @since 2.6.0
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*
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* @see WP_Dependencies
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*/
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class WP_Styles extends WP_Dependencies {
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/**
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* Base URL for styles.
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*
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* Full URL with trailing slash.
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*
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* @since 2.6.0
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* @var string
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*/
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public $base_url;
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/**
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* URL of the content directory.
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*
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* @since 2.8.0
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* @var string
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*/
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public $content_url;
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/**
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* Default version string for stylesheets.
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*
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* @since 2.6.0
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* @var string
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*/
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public $default_version;
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/**
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* The current text direction.
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*
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* @since 2.6.0
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* @var string
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*/
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public $text_direction = 'ltr';
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/**
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* Holds a list of style handles which will be concatenated.
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*
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* @since 2.8.0
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* @var string
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*/
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public $concat = '';
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/**
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* Holds a string which contains style handles and their version.
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*
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* @since 2.8.0
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* @deprecated 3.4.0
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* @var string
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*/
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public $concat_version = '';
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/**
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* Whether to perform concatenation.
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*
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* @since 2.8.0
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* @var bool
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*/
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public $do_concat = false;
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/**
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* Holds HTML markup of styles and additional data if concatenation
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* is enabled.
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*
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* @since 2.8.0
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* @var string
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*/
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public $print_html = '';
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/**
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* Holds inline styles if concatenation is enabled.
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*
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* @since 3.3.0
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* @var string
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*/
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public $print_code = '';
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/**
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* List of default directories.
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*
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* @since 2.8.0
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* @var array
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*/
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public $default_dirs;
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/**
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* Constructor.
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*
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* @since 2.6.0
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*/
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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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* Processes a style dependency.
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*
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* @since 2.6.0
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*
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* @see WP_Dependencies::do_item()
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*
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* @param string $handle The style's registered handle.
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* @return bool True on success, false on failure.
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*/
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public function do_item( $handle ) {
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if ( ! parent::do_item( $handle ) ) {
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return false;
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}
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$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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}
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if ( isset( $this->args[ $handle ] ) ) {
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$ver = $ver ? $ver . '&' . $this->args[ $handle ] : $this->args[ $handle ];
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}
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$src = $obj->src;
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$cond_before = '';
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$cond_after = '';
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$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
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if ( $conditional ) {
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$cond_before = "<!--[if {$conditional}]>\n";
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$cond_after = "<![endif]-->\n";
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}
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$inline_style = $this->print_inline_style( $handle, false );
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if ( $inline_style ) {
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$inline_style_tag = sprintf( "<style id='%s-inline-css' type='text/css'>\n%s\n</style>\n", esc_attr( $handle ), $inline_style );
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} else {
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$inline_style_tag = '';
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}
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if ( $this->do_concat ) {
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if ( $this->in_default_dir( $src ) && ! $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 .= $inline_style;
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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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}
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// A single item may alias a set of items, by having dependencies, but no source.
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if ( ! $src ) {
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if ( $inline_style_tag ) {
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if ( $this->do_concat ) {
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$this->print_html .= $inline_style_tag;
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} else {
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echo $inline_style_tag;
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}
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}
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return true;
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}
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$href = $this->_css_href( $src, $ver, $handle );
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if ( ! $href ) {
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return true;
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}
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$rel = isset( $obj->extra['alt'] ) && $obj->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';
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$title = isset( $obj->extra['title'] ) ? "title='" . esc_attr( $obj->extra['title'] ) . "'" : '';
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$tag = "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n";
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/**
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* Filters the HTML link tag of an enqueued style.
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*
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* @since 2.6.0
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* @since 4.3.0 Introduced the `$href` parameter.
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* @since 4.5.0 Introduced the `$media` parameter.
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*
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* @param string $html The link tag for the enqueued style.
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* @param string $handle The style's registered handle.
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* @param string $href The stylesheet's source URL.
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* @param string $media The stylesheet's media attribute.
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*/
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$tag = apply_filters( 'style_loader_tag', $tag, $handle, $href, $media );
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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( $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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$rtl_tag = "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n";
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/** This filter is documented in wp-includes/class.wp-styles.php */
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$rtl_tag = apply_filters( 'style_loader_tag', $rtl_tag, $handle, $rtl_href, $media );
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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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if ( $this->do_concat ) {
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$this->print_html .= $cond_before;
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$this->print_html .= $tag;
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if ( $inline_style_tag ) {
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$this->print_html .= $inline_style_tag;
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}
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$this->print_html .= $cond_after;
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} else {
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echo $cond_before;
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echo $tag;
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$this->print_inline_style( $handle );
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echo $cond_after;
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}
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return true;
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}
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/**
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* Adds extra CSS styles to a registered stylesheet.
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*
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* @since 3.3.0
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*
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* @param string $handle The style's registered handle.
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* @param string $code String containing the CSS styles to be added.
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* @return bool True on success, false on failure.
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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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* Prints extra CSS styles of a registered stylesheet.
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*
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* @since 3.3.0
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*
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* @param string $handle The style's registered handle.
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* @param bool $echo Optional. Whether to echo the inline style instead of just returning it.
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* Default true.
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* @return string|bool False if no data exists, inline styles if `$echo` is true, true otherwise.
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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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* Determines style dependencies.
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*
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* @since 2.6.0
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*
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* @see WP_Dependencies::all_deps()
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*
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* @param mixed $handles Item handle and argument (string) or item handles and arguments (array of strings).
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* @param bool $recursion Internal flag that function is calling itself.
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* @param int|false $group Group level: (int) level, (false) no groups.
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* @return bool True on success, false on failure.
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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, $group );
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if ( ! $recursion ) {
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/**
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* Filters 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 string[] $to_do The list of enqueued style handles about to be processed.
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*/
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$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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* Generates 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 of the enqueued style.
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* @param string $ver The version of the enqueued style.
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* @param string $handle The style's registered handle.
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* @return string Style's fully-qualified URL.
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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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/**
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* Filters 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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* Whether a handle's source is in a default directory.
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*
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* @since 2.8.0
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*
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* @param string $src The source of the enqueued style.
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* @return bool True if found, false if not.
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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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}
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foreach ( (array) $this->default_dirs as $test ) {
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if ( 0 === strpos( $src, $test ) ) {
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return true;
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}
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}
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return false;
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}
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/**
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* Processes items and dependencies for the footer group.
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*
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* HTML 5 allows styles in the body, grab late enqueued items and output them in the footer.
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*
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* @since 3.3.0
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*
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* @see WP_Dependencies::do_items()
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*
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* @return array Handles of items that have been processed.
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*/
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public function do_footer_items() {
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$this->do_items( false, 1 );
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return $this->done;
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}
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/**
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* Resets class properties.
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*
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* @since 3.3.0
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*/
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public function reset() {
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$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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}
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