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| 1 | <?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
| 2 | |
| 3 | if ( ! defined( 'ABSPATH' ) ) { |
| 4 | exit( 0 ); |
| 5 | } |
| 6 | |
| 7 | /** |
| 8 | * These are helpers for the shortcode and embed render endpoints. |
| 9 | */ |
| 10 | abstract class WPCOM_JSON_API_Render_Endpoint extends WPCOM_JSON_API_Endpoint { |
| 11 | /** |
| 12 | * Figure out what scripts and styles to load. |
| 13 | * props to o2's o2_Read_API::poll() function for inspiration. |
| 14 | * |
| 15 | * In short we figure out what scripts load for a "normal" page load by executing wp_head and wp_footer |
| 16 | * then we render the embed/shortcode (to both get our result, and to have the shortcode files enqueue their resources) |
| 17 | * then we load wp_head and wp_footer again to see what new resources were added |
| 18 | * finally we find out the url to the source file and any extra info (like media or init js) |
| 19 | * |
| 20 | * @param mixed $callback - the function callback. |
| 21 | * @param mixed $callback_arg - the callback arguments. |
| 22 | * |
| 23 | * @return array |
| 24 | */ |
| 25 | public function process_render( $callback, $callback_arg ) { |
| 26 | global $wp_scripts, $wp_styles; |
| 27 | |
| 28 | if ( false === defined( 'STYLESHEETPATH' ) ) { |
| 29 | wp_templating_constants(); |
| 30 | } |
| 31 | |
| 32 | // initial scripts & styles (to subtract) |
| 33 | ob_start(); |
| 34 | wp_head(); |
| 35 | wp_footer(); |
| 36 | ob_end_clean(); |
| 37 | $initial_scripts = $wp_scripts->done; |
| 38 | $initial_styles = $wp_styles->done; |
| 39 | |
| 40 | // actually render the shortcode, get the result, and do the resource loading again so we can subtract.. |
| 41 | ob_start(); |
| 42 | wp_head(); |
| 43 | ob_end_clean(); |
| 44 | $result = call_user_func( $callback, $callback_arg ); |
| 45 | ob_start(); |
| 46 | wp_footer(); |
| 47 | ob_end_clean(); |
| 48 | |
| 49 | // find the difference (the new resource files) |
| 50 | $loaded_scripts = array_diff( $wp_scripts->done, $initial_scripts ); |
| 51 | $loaded_styles = array_diff( $wp_styles->done, $initial_styles ); |
| 52 | return array( |
| 53 | 'result' => $result, |
| 54 | 'loaded_scripts' => $loaded_scripts, |
| 55 | 'loaded_styles' => $loaded_styles, |
| 56 | ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Takes the list of styles and scripts and adds them to the JSON response. |
| 61 | * |
| 62 | * @param array $return - what was returned. |
| 63 | * @param array $loaded_scripts - the loaded scripts. |
| 64 | * @param array $loaded_styles - the loaded styles. |
| 65 | * |
| 66 | * @return array |
| 67 | */ |
| 68 | public function add_assets( $return, $loaded_scripts, $loaded_styles ) { |
| 69 | global $wp_scripts, $wp_styles; |
| 70 | // scripts first, just cuz |
| 71 | if ( $loaded_scripts !== array() ) { |
| 72 | $scripts = array(); |
| 73 | foreach ( $loaded_scripts as $handle ) { |
| 74 | if ( ! isset( $wp_scripts->registered[ $handle ] ) ) { |
| 75 | continue; |
| 76 | } |
| 77 | |
| 78 | $src = $wp_scripts->registered[ $handle ]->src; |
| 79 | |
| 80 | // attach version and an extra query parameters |
| 81 | $ver = $this->get_version( $wp_scripts->registered[ $handle ]->ver, $wp_scripts->default_version ); |
| 82 | if ( isset( $wp_scripts->args[ $handle ] ) ) { |
| 83 | $ver = $ver ? $ver . '&' . $wp_scripts->args[ $handle ] : $wp_scripts->args[ $handle ]; |
| 84 | } |
| 85 | $src = add_query_arg( 'ver', $ver, $src ); |
| 86 | |
| 87 | // add to an aray so we can return all this info |
| 88 | $scripts[ $handle ] = array( |
| 89 | 'src' => $src, |
| 90 | ); |
| 91 | $extra = $wp_scripts->print_extra_script( $handle, false ); |
| 92 | if ( ! empty( $extra ) ) { |
| 93 | $scripts[ $handle ]['extra'] = $extra; |
| 94 | } |
| 95 | } |
| 96 | $return['scripts'] = $scripts; |
| 97 | } |
| 98 | // now styles |
| 99 | if ( $loaded_styles !== array() ) { |
| 100 | $styles = array(); |
| 101 | foreach ( $loaded_styles as $handle ) { |
| 102 | if ( ! isset( $wp_styles->registered[ $handle ] ) ) { |
| 103 | continue; |
| 104 | } |
| 105 | |
| 106 | $src = $wp_styles->registered[ $handle ]->src; |
| 107 | |
| 108 | // attach version and an extra query parameters |
| 109 | $ver = $this->get_version( $wp_styles->registered[ $handle ]->ver, $wp_styles->default_version ); |
| 110 | if ( isset( $wp_styles->args[ $handle ] ) ) { |
| 111 | $ver = $ver ? $ver . '&' . $wp_styles->args[ $handle ] : $wp_styles->args[ $handle ]; |
| 112 | } |
| 113 | $src = add_query_arg( 'ver', $ver, $src ); |
| 114 | |
| 115 | // is there a special media (print, screen, etc) for this? if not, default to 'all' |
| 116 | $media = 'all'; |
| 117 | if ( isset( $wp_styles->registered[ $handle ]->args ) ) { |
| 118 | $media = esc_attr( $wp_styles->registered[ $handle ]->args ); |
| 119 | } |
| 120 | |
| 121 | // add to an array so we can return all this info |
| 122 | $styles[ $handle ] = array( |
| 123 | 'src' => $src, |
| 124 | 'media' => $media, |
| 125 | ); |
| 126 | } |
| 127 | |
| 128 | $return['styles'] = $styles; |
| 129 | } |
| 130 | |
| 131 | return $return; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Returns the 'version' string set by the shortcode so different versions of scripts/styles can be loaded. |
| 136 | * |
| 137 | * @param string $this_scripts_version - this scripts version. |
| 138 | * @param string $default_version - the default version. |
| 139 | * |
| 140 | * @return string |
| 141 | */ |
| 142 | public function get_version( $this_scripts_version, $default_version ) { |
| 143 | if ( null === $this_scripts_version ) { |
| 144 | $ver = ''; |
| 145 | } else { |
| 146 | $ver = $this_scripts_version ? $this_scripts_version : $default_version; |
| 147 | } |
| 148 | return $ver; |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Given a shortcode, process and return the result. |
| 153 | * |
| 154 | * @param string $shortcode - the shortcode. |
| 155 | */ |
| 156 | public function do_shortcode( $shortcode ) { |
| 157 | return do_shortcode( $shortcode ); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Given a one-line embed URL, process and return the result. |
| 162 | * |
| 163 | * @param string $embed_url - the embed URL. |
| 164 | * |
| 165 | * @return string|false |
| 166 | */ |
| 167 | public function do_embed( $embed_url ) { |
| 168 | global $wp_embed; |
| 169 | return $wp_embed->shortcode( array(), $embed_url ); |
| 170 | } |
| 171 | } |