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