diff options
Diffstat (limited to 'plugins/jetpack/json-endpoints/class.wpcom-json-api-render-endpoint.php')
| -rw-r--r-- | plugins/jetpack/json-endpoints/class.wpcom-json-api-render-endpoint.php | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/plugins/jetpack/json-endpoints/class.wpcom-json-api-render-endpoint.php b/plugins/jetpack/json-endpoints/class.wpcom-json-api-render-endpoint.php new file mode 100644 index 00000000..f2de7fc3 --- /dev/null +++ b/plugins/jetpack/json-endpoints/class.wpcom-json-api-render-endpoint.php @@ -0,0 +1,145 @@ +<?php + +// these are helpers for the shortcode and embed render endpoints +abstract class WPCOM_JSON_API_Render_Endpoint extends WPCOM_JSON_API_Endpoint { + + /* + * Figure out what scripts and styles to load. + * props to o2's o2_Read_API::poll() function for inspiration. + * + * In short we figure out what scripts load for a "normal" page load by executing wp_head and wp_footer + * then we render the embed/shortcode (to both get our result, and to have the shortcode files enqueue their resources) + * then we load wp_head and wp_footer again to see what new resources were added + * finally we find out the url to the source file and any extra info (like media or init js) + */ + function process_render( $callback, $callback_arg ) { + global $wp_scripts, $wp_styles; + + // initial scripts & styles (to subtract) + ob_start(); + wp_head(); + wp_footer(); + ob_end_clean(); + $initial_scripts = $wp_scripts->done; + $initial_styles = $wp_styles->done; + + // actually render the shortcode, get the result, and do the resource loading again so we can subtract.. + ob_start(); + wp_head(); + ob_end_clean(); + $result = call_user_func( $callback, $callback_arg ); + ob_start(); + wp_footer(); + ob_end_clean(); + + // find the difference (the new resource files) + $loaded_scripts = array_diff( $wp_scripts->done, $initial_scripts ); + $loaded_styles = array_diff( $wp_styles->done, $initial_styles ); + return array( + 'result' => $result, + 'loaded_scripts' => $loaded_scripts, + 'loaded_styles' => $loaded_styles, + ); + } + + /** + * Takes the list of styles and scripts and adds them to the JSON response + */ + function add_assets( $return, $loaded_scripts, $loaded_styles ) { + global $wp_scripts, $wp_styles; + // scripts first, just cuz + if ( count( $loaded_scripts ) > 0 ) { + $scripts = array(); + foreach ( $loaded_scripts as $handle ) { + if ( !isset( $wp_scripts->registered[ $handle ] ) ) + continue; + + $src = $wp_scripts->registered[ $handle ]->src; + + // attach version and an extra query parameters + $ver = $this->get_version( $wp_scripts->registered[ $handle ]->ver, $wp_scripts->default_version ); + if ( isset( $wp_scripts->args[ $handle ] ) ) { + $ver = $ver ? $ver . '&' . $wp_scripts->args[$handle] : $wp_scripts->args[$handle]; + } + $src = add_query_arg( 'ver', $ver, $src ); + + // add to an aray so we can return all this info + $scripts[ $handle ] = array( + 'src' => $src, + ); + $extra = $wp_scripts->print_extra_script( $handle, false ); + if ( !empty( $extra ) ) { + $scripts[$handle]['extra'] = $extra; + } + } + $return['scripts'] = $scripts; + } + // now styles + if ( count( $loaded_styles ) > 0 ) { + $styles = array(); + foreach ( $loaded_styles as $handle ) { + if ( !isset( $wp_styles->registered[ $handle ] ) ) + continue; + + $src = $wp_styles->registered[ $handle ]->src; + + // attach version and an extra query parameters + $ver = $this->get_version( $wp_styles->registered[ $handle ]->ver, $wp_styles->default_version ); + if ( isset( $wp_styles->args[ $handle ] ) ) { + $ver = $ver ? $ver . '&' . $wp_styles->args[$handle] : $wp_styles->args[$handle]; + } + $src = add_query_arg( 'ver', $ver, $src ); + + // is there a special media (print, screen, etc) for this? if not, default to 'all' + $media = 'all'; + if ( isset( $wp_styles->registered[ $handle ]->args ) ) { + $media = esc_attr( $wp_styles->registered[ $handle ]->args ); + } + + // add to an array so we can return all this info + $styles[ $handle ] = array ( + 'src' => $src, + 'media' => $media, + ); + } + + $return['styles'] = $styles; + } + + return $return; + } + + /** + * Returns the 'version' string set by the shortcode so different versions of scripts/styles can be loaded + */ + function get_version( $this_scripts_version, $default_version ) { + if ( null === $this_scripts_version ) { + $ver = ''; + } else { + $ver = $this_scripts_version ? $this_scripts_version : $default_version; + } + return $ver; + } + + /** + * given a shortcode, process and return the result + */ + function do_shortcode( $shortcode ) { + return do_shortcode( $shortcode ); + } + + /** + * given a one-line embed URL, process and return the result + */ + function do_embed( $embed_url ) { + // in order for oEmbed to fire in the `$wp_embed->shortcode` method, we need to set a post as the current post + $_posts = get_posts( array( 'posts_per_page' => 1, 'suppress_filters' => false ) ); + if ( ! empty( $_posts ) ) { + global $post; + $post = array_shift( $_posts ); + } + + global $wp_embed; + return $wp_embed->shortcode( array(), $embed_url ); + } +}
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