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Introduce AMP_WP_Styles for doing enqueued scripts inline
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| <?php | ||
| /** | ||
| * Class AMP_WP_Styles | ||
| * | ||
| * @package AMP | ||
| */ | ||
|
|
||
| /** | ||
| * Extend WP_Styles with handling of CSS for AMP. | ||
| * | ||
| * @since 0.7 | ||
| */ | ||
| class AMP_WP_Styles extends WP_Styles { | ||
|
|
||
| /** | ||
| * Concatenation is always enabled for AMP. | ||
| * | ||
| * @since 0.7 | ||
| * @var bool | ||
| */ | ||
| public $do_concat = true; | ||
|
|
||
| /** | ||
| * Generates an enqueued style's fully-qualified file path. | ||
| * | ||
| * @since 0.7 | ||
| * @see WP_Styles::_css_href() | ||
| * | ||
| * @param string $src The source URL of the enqueued style. | ||
| * @param string $handle The style's registered handle. | ||
| * @return string|WP_Error Style's absolute validated filesystem path, or WP_Error when error. | ||
| */ | ||
| public function get_validated_css_file_path( $src, $handle ) { | ||
| if ( ! is_bool( $src ) && ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && 0 === strpos( $src, $this->content_url ) ) ) { | ||
| $src = $this->base_url . $src; | ||
| } | ||
|
|
||
| /** This filter is documented in wp-includes/class.wp-styles.php */ | ||
| $src = apply_filters( 'style_loader_src', $src, $handle ); | ||
|
|
||
| // Strip query and fragment from URL. | ||
| $src = preg_replace( ':[\?#].+:', '', $src ); | ||
|
|
||
| $src = esc_url_raw( $src ); | ||
|
|
||
| // @todo Explicitly not using includes_url() or content_url() since filters may point outside filesystem? | ||
| $includes_url = includes_url( '/' ); | ||
| $content_url = content_url( '/' ); | ||
| $admin_url = get_admin_url( null, '/' ); | ||
| $css_path = null; | ||
| if ( 0 === strpos( $src, $content_url ) ) { | ||
| $css_path = WP_CONTENT_DIR . substr( $src, strlen( $content_url ) - 1 ); | ||
| } elseif ( 0 === strpos( $src, $includes_url ) ) { | ||
| $css_path = ABSPATH . WPINC . substr( $src, strlen( $includes_url ) - 1 ); | ||
| } elseif ( 0 === strpos( $src, $admin_url ) ) { | ||
| $css_path = ABSPATH . 'wp-admin' . substr( $src, strlen( $admin_url ) - 1 ); | ||
| } | ||
|
|
||
| if ( ! $css_path || false !== strpos( '../', $css_path ) || 0 !== validate_file( $css_path ) || ! file_exists( $css_path ) ) { | ||
| /* translators: %1$s is stylesheet handle, %2$s is stylesheet URL */ | ||
| return new WP_Error( 'amp_css_path_not_found', sprintf( __( 'Unable to locate filesystem path for stylesheet %1$s (%2$s).', 'amp' ), $handle, $src ) ); | ||
| } | ||
|
|
||
| return $css_path; | ||
| } | ||
|
|
||
| /** | ||
| * Processes a style dependency. | ||
| * | ||
| * @since 0.7 | ||
| * @see WP_Styles::do_item() | ||
| * | ||
| * @param string $handle The style's registered handle. | ||
| * @return bool True on success, false on failure. | ||
| */ | ||
| public function do_item( $handle ) { | ||
| if ( ! WP_Dependencies::do_item( $handle ) ) { | ||
| return false; | ||
| } | ||
| $obj = $this->registered[ $handle ]; | ||
|
|
||
| // Conditional styles and alternate styles aren't supported in AMP. | ||
| if ( isset( $obj->extra['conditional'] ) || isset( $obj->extra['alt'] ) ) { | ||
| return false; | ||
| } | ||
|
|
||
| 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 ( ! $obj->src ) { | ||
| $inline_style = $this->print_inline_style( $handle, false ); | ||
| if ( $inline_style ) { | ||
| $this->print_code .= $inline_style; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| $css_file_path = $this->get_validated_css_file_path( $obj->src, $handle ); | ||
| if ( is_wp_error( $css_file_path ) ) { | ||
| trigger_error( esc_html( $css_file_path->get_error_message() ), E_USER_WARNING ); // phpcs:ignore | ||
| return false; | ||
| } | ||
| $css_rtl_file_path = ''; | ||
|
|
||
| // Handle RTL styles. | ||
| 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'] : ''; | ||
| $css_rtl_file_path = $this->get_validated_css_file_path( | ||
| str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $obj->src ), | ||
| "$handle-rtl" | ||
| ); | ||
| } else { | ||
| $css_rtl_file_path = $this->get_validated_css_file_path( $obj->extra['rtl'], "$handle-rtl" ); | ||
| } | ||
|
|
||
| if ( is_wp_error( $css_rtl_file_path ) ) { | ||
| trigger_error( esc_html( $css_rtl_file_path->get_error_message() ), E_USER_WARNING ); // phpcs:ignore | ||
| $css_rtl_file_path = null; | ||
| } elseif ( 'replace' === $obj->extra['rtl'] ) { | ||
| $css_file_path = null; | ||
| } | ||
| } | ||
|
|
||
| // Load the CSS from the filesystem. | ||
| foreach ( array_filter( array( $css_file_path, $css_rtl_file_path ) ) as $css_path ) { | ||
| $css = file_get_contents( $css_path ); // phpcs:ignore -- It's a local filesystem path not a remote request. | ||
| if ( 'all' !== $media ) { | ||
| $css .= sprintf( '@media %s { %s }', $media, $css ); | ||
| } | ||
| $this->print_code .= $css; | ||
| } | ||
|
|
||
| // Add inline styles. | ||
| $inline_style = $this->print_inline_style( $handle, false ); | ||
| if ( $inline_style ) { | ||
| $this->print_code .= $inline_style; | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
|
|
||
| /** | ||
| * Get the locale stylesheet if it exists. | ||
| * | ||
| * @since 0.7 | ||
| * @return string CSS. | ||
| */ | ||
| public function do_locale_stylesheet() { | ||
| $src = get_locale_stylesheet_uri(); | ||
| if ( ! $src ) { | ||
| return; | ||
| } | ||
| $path = $this->get_validated_css_file_path( $src, get_stylesheet() . '-' . get_locale() ); | ||
| if ( is_wp_error( $path ) ) { | ||
| return; | ||
| } | ||
| $this->print_code .= file_get_contents( $path ); // phpcs:ignore -- The path has been validated, and it is not a remote path. | ||
| } | ||
|
|
||
| /** | ||
| * Append Customizer Custom CSS. | ||
| * | ||
| * @since 0.7 | ||
| * @see wp_custom_css() | ||
| * @see wp_custom_css_cb() | ||
| */ | ||
| public function do_custom_css() { | ||
| $this->print_code .= wp_get_custom_css(); | ||
| } | ||
| } |