| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* Embed recipe 'cards' in post, with basic styling and print functionality |
| 5 |
* |
| 6 |
* To Do |
| 7 |
* - defaults settings |
| 8 |
* - basic styles/themecolor styles |
| 9 |
* - validation/sanitization |
| 10 |
* - print styles |
| 11 |
*/ |
| 12 |
class Jetpack_Recipes { |
| 13 |
|
| 14 |
private $scripts_and_style_included = false; |
| 15 |
|
| 16 |
function __construct() { |
| 17 |
add_action( 'init', array( $this, 'action_init' ) ); |
| 18 |
|
| 19 |
add_filter( 'wp_kses_allowed_html', array( $this, 'add_recipes_kses_rules' ), 10, 2 ); |
| 20 |
} |
| 21 |
|
| 22 |
/** |
| 23 |
* Add Schema-specific attributes to our allowed tags in wp_kses, |
| 24 |
* so we can have better Schema.org compliance. |
| 25 |
* |
| 26 |
* @param array $allowedtags Array of allowed HTML tags in recipes. |
| 27 |
* @param array $context Context to judge allowed tags by. |
| 28 |
*/ |
| 29 |
function add_recipes_kses_rules( $allowedtags, $context ) { |
| 30 |
if ( in_array( $context, array( '', 'post', 'data' ) ) ) : |
| 31 |
// Create an array of all the tags we'd like to add the itemprop attribute to. |
| 32 |
$tags = array( 'li', 'ol', 'ul', 'img', 'p', 'h3', 'time' ); |
| 33 |
foreach ( $tags as $tag ) { |
| 34 |
$allowedtags = $this->add_kses_rule( |
| 35 |
$allowedtags, |
| 36 |
$tag, |
| 37 |
array( |
| 38 |
'class' => array(), |
| 39 |
'itemprop' => array(), |
| 40 |
'datetime' => array(), |
| 41 |
) |
| 42 |
); |
| 43 |
} |
| 44 |
|
| 45 |
// Allow itemscope and itemtype for divs. |
| 46 |
$allowedtags = $this->add_kses_rule( |
| 47 |
$allowedtags, |
| 48 |
'div', |
| 49 |
array( |
| 50 |
'class' => array(), |
| 51 |
'itemscope' => array(), |
| 52 |
'itemtype' => array(), |
| 53 |
) |
| 54 |
); |
| 55 |
endif; |
| 56 |
|
| 57 |
return $allowedtags; |
| 58 |
} |
| 59 |
|
| 60 |
/** |
| 61 |
* Function to add a new property rule to our kses array. |
| 62 |
* Used by add_recipe_kses_rules() above. |
| 63 |
* |
| 64 |
* @param array $all_tags Array of allowed HTML tags in recipes. |
| 65 |
* @param string $tag New HTML tag to add to the array of allowed HTML. |
| 66 |
* @param array $rules Array of allowed attributes for that HTML tag. |
| 67 |
*/ |
| 68 |
private function add_kses_rule( $all_tags, $tag, $rules ) { |
| 69 |
|
| 70 |
// If the tag doesn't already exist, add it. |
| 71 |
if ( ! isset( $all_tags[ $tag ] ) ) { |
| 72 |
$all_tags[ $tag ] = array(); |
| 73 |
} |
| 74 |
|
| 75 |
// Merge the new tags with existing tags. |
| 76 |
$all_tags[ $tag ] = array_merge( $all_tags[ $tag ], $rules ); |
| 77 |
|
| 78 |
return $all_tags; |
| 79 |
} |
| 80 |
|
| 81 |
/** |
| 82 |
* Register our shortcode and enqueue necessary files. |
| 83 |
*/ |
| 84 |
function action_init() { |
| 85 |
// Enqueue styles if [recipe] exists. |
| 86 |
add_action( 'wp_head', array( $this, 'add_scripts' ), 1 ); |
| 87 |
|
| 88 |
// Render [recipe], along with other shortcodes that can be nested within. |
| 89 |
add_shortcode( 'recipe', array( $this, 'recipe_shortcode' ) ); |
| 90 |
add_shortcode( 'recipe-notes', array( $this, 'recipe_notes_shortcode' ) ); |
| 91 |
add_shortcode( 'recipe-ingredients', array( $this, 'recipe_ingredients_shortcode' ) ); |
| 92 |
add_shortcode( 'recipe-directions', array( $this, 'recipe_directions_shortcode' ) ); |
| 93 |
} |
| 94 |
|
| 95 |
/** |
| 96 |
* Enqueue scripts and styles |
| 97 |
*/ |
| 98 |
function add_scripts() { |
| 99 |
if ( empty( $GLOBALS['posts'] ) || ! is_array( $GLOBALS['posts'] ) ) { |
| 100 |
return; |
| 101 |
} |
| 102 |
|
| 103 |
foreach ( $GLOBALS['posts'] as $p ) { |
| 104 |
if ( has_shortcode( $p->post_content, 'recipe' ) ) { |
| 105 |
$this->scripts_and_style_included = true; |
| 106 |
break; |
| 107 |
} |
| 108 |
} |
| 109 |
|
| 110 |
if ( ! $this->scripts_and_style_included ) { |
| 111 |
return; |
| 112 |
} |
| 113 |
|
| 114 |
wp_enqueue_style( 'jetpack-recipes-style', plugins_url( '/css/recipes.css', __FILE__ ), array(), '20130919' ); |
| 115 |
wp_style_add_data( 'jetpack-recipes-style', 'rtl', 'replace' ); |
| 116 |
|
| 117 |
// add $themecolors-defined styles. |
| 118 |
wp_add_inline_style( 'jetpack-recipes-style', self::themecolor_styles() ); |
| 119 |
|
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wp_enqueue_script( |
| 121 |
'jetpack-recipes-printthis', |
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Jetpack::get_file_url_for_environment( '_inc/build/shortcodes/js/recipes-printthis.min.js', 'modules/shortcodes/js/recipes-printthis.js' ), |
| 123 |
array( 'jquery' ), |
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'20170202' |
| 125 |
); |
| 126 |
|
| 127 |
wp_enqueue_script( |
| 128 |
'jetpack-recipes-js', |
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Jetpack::get_file_url_for_environment( '_inc/build/shortcodes/js/recipes.min.js', 'modules/shortcodes/js/recipes.js' ), |
| 130 |
array( 'jquery', 'jetpack-recipes-printthis' ), |
| 131 |
'20131230' |
| 132 |
); |
| 133 |
|
| 134 |
$title_var = wp_title( '|', false, 'right' ); |
| 135 |
$rtl = is_rtl() ? '-rtl' : ''; |
| 136 |
$print_css_var = plugins_url( "/css/recipes-print{$rtl}.css", __FILE__ ); |
| 137 |
|
| 138 |
wp_localize_script( |
| 139 |
'jetpack-recipes-js', |
| 140 |
'jetpack_recipes_vars', |
| 141 |
array( |
| 142 |
'pageTitle' => $title_var, |
| 143 |
'loadCSS' => $print_css_var, |
| 144 |
) |
| 145 |
); |
| 146 |
} |
| 147 |
|
| 148 |
/** |
| 149 |
* Our [recipe] shortcode. |
| 150 |
* Prints recipe data styled to look good on *any* theme. |
| 151 |
* |
| 152 |
* @param array $atts Array of shortcode attributes. |
| 153 |
* @param string $content Post content. |
| 154 |
* |
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* @return string HTML for recipe shortcode. |
| 156 |
*/ |
| 157 |
static function recipe_shortcode( $atts, $content = '' ) { |
| 158 |
$atts = shortcode_atts( |
| 159 |
array( |
| 160 |
'title' => '', // string. |
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'servings' => '', // intval. |
| 162 |
'time' => '', // string. |
| 163 |
'difficulty' => '', // string. |
| 164 |
'print' => '', // string. |
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'source' => '', // string. |
| 166 |
'sourceurl' => '', // string. |
| 167 |
'image' => '', // string. |
| 168 |
'description' => '', // string. |
| 169 |
), |
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$atts, |
| 171 |
'recipe' |
| 172 |
); |
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|
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return self::recipe_shortcode_html( $atts, $content ); |
| 175 |
} |
| 176 |
|
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/** |
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* The recipe output |
| 179 |
* |
| 180 |
* @param array $atts Array of shortcode attributes. |
| 181 |
* @param string $content Post content. |
| 182 |
* |
| 183 |
* @return string HTML output |
| 184 |
*/ |
| 185 |
static function recipe_shortcode_html( $atts, $content = '' ) { |
| 186 |
|
| 187 |
$html = '<div class="hrecipe jetpack-recipe" itemscope itemtype="https://schema.org/Recipe">'; |
| 188 |
|
| 189 |
// Print the recipe title if exists. |
| 190 |
if ( '' !== $atts['title'] ) { |
| 191 |
$html .= '<h3 class="jetpack-recipe-title" itemprop="name">' . esc_html( $atts['title'] ) . '</h3>'; |
| 192 |
} |
| 193 |
|
| 194 |
// Print the recipe meta if exists. |
| 195 |
if ( '' !== $atts['servings'] || '' != $atts['time'] || '' != $atts['difficulty'] || '' != $atts['print'] ) { |
| 196 |
$html .= '<ul class="jetpack-recipe-meta">'; |
| 197 |
|
| 198 |
if ( '' !== $atts['servings'] ) { |
| 199 |
$html .= sprintf( |
| 200 |
'<li class="jetpack-recipe-servings" itemprop="recipeYield"><strong>%1$s: </strong>%2$s</li>', |
| 201 |
esc_html_x( 'Servings', 'recipe', 'jetpack' ), |
| 202 |
esc_html( $atts['servings'] ) |
| 203 |
); |
| 204 |
} |
| 205 |
|
| 206 |
if ( '' !== $atts['time'] ) { |
| 207 |
// Get a time that's supported by Schema.org. |
| 208 |
$duration = WPCOM_JSON_API_Date::format_duration( $atts['time'] ); |
| 209 |
// If no duration can be calculated, let's output what the user provided. |
| 210 |
if ( empty( $duration ) ) { |
| 211 |
$duration = $atts['time']; |
| 212 |
} |
| 213 |
|
| 214 |
$html .= sprintf( |
| 215 |
'<li class="jetpack-recipe-time"> |
| 216 |
<time itemprop="totalTime" datetime="%3$s"><strong>%1$s: </strong>%2$s</time> |
| 217 |
</li>', |
| 218 |
esc_html_x( 'Time', 'recipe', 'jetpack' ), |
| 219 |
esc_html( $atts['time'] ), |
| 220 |
esc_attr( $duration ) |
| 221 |
); |
| 222 |
} |
| 223 |
|
| 224 |
if ( '' !== $atts['difficulty'] ) { |
| 225 |
$html .= sprintf( |
| 226 |
'<li class="jetpack-recipe-difficulty"><strong>%1$s: </strong>%2$s</li>', |
| 227 |
esc_html_x( 'Difficulty', 'recipe', 'jetpack' ), |
| 228 |
esc_html( $atts['difficulty'] ) |
| 229 |
); |
| 230 |
} |
| 231 |
|
| 232 |
if ( '' !== $atts['source'] ) { |
| 233 |
$html .= sprintf( |
| 234 |
'<li class="jetpack-recipe-source"><strong>%1$s: </strong>', |
| 235 |
esc_html_x( 'Source', 'recipe', 'jetpack' ) |
| 236 |
); |
| 237 |
|
| 238 |
if ( '' !== $atts['sourceurl'] ) : |
| 239 |
// Show the link if we have one. |
| 240 |
$html .= sprintf( |
| 241 |
'<a href="%2$s">%1$s</a>', |
| 242 |
esc_html( $atts['source'] ), |
| 243 |
esc_url( $atts['sourceurl'] ) |
| 244 |
); |
| 245 |
else : |
| 246 |
// Skip the link. |
| 247 |
$html .= sprintf( |
| 248 |
'%1$s', |
| 249 |
esc_html( $atts['source'] ) |
| 250 |
); |
| 251 |
endif; |
| 252 |
|
| 253 |
$html .= '</li>'; |
| 254 |
} |
| 255 |
|
| 256 |
if ( 'false' !== $atts['print'] ) { |
| 257 |
$html .= sprintf( |
| 258 |
'<li class="jetpack-recipe-print"><a href="#">%1$s</a></li>', |
| 259 |
esc_html_x( 'Print', 'recipe', 'jetpack' ) |
| 260 |
); |
| 261 |
} |
| 262 |
|
| 263 |
$html .= '</ul>'; |
| 264 |
} // End if(). |
| 265 |
|
| 266 |
// Output the image, if we have one. |
| 267 |
if ( '' !== $atts['image'] ) { |
| 268 |
$html .= sprintf( |
| 269 |
'<img class="jetpack-recipe-image" itemprop="image" src="%1$s" />', |
| 270 |
esc_url( $atts['image'] ) |
| 271 |
); |
| 272 |
} |
| 273 |
|
| 274 |
// Output the description, if we have one. |
| 275 |
if ( '' !== $atts['description'] ) { |
| 276 |
$html .= sprintf( |
| 277 |
'<p class="jetpack-recipe-description" itemprop="description">%1$s</p>', |
| 278 |
esc_html( $atts['description'] ) |
| 279 |
); |
| 280 |
} |
| 281 |
|
| 282 |
// Print content between codes. |
| 283 |
$html .= '<div class="jetpack-recipe-content">' . do_shortcode( $content ) . '</div>'; |
| 284 |
|
| 285 |
// Close it up. |
| 286 |
$html .= '</div>'; |
| 287 |
|
| 288 |
// If there is a recipe within a recipe, remove the shortcode. |
| 289 |
if ( has_shortcode( $html, 'recipe' ) ) { |
| 290 |
remove_shortcode( 'recipe' ); |
| 291 |
} |
| 292 |
|
| 293 |
// Sanitize html. |
| 294 |
$html = wp_kses_post( $html ); |
| 295 |
|
| 296 |
// Return the HTML block. |
| 297 |
return $html; |
| 298 |
} |
| 299 |
|
| 300 |
/** |
| 301 |
* Our [recipe-notes] shortcode. |
| 302 |
* Outputs ingredients, styled in a div. |
| 303 |
* |
| 304 |
* @param array $atts Array of shortcode attributes. |
| 305 |
* @param string $content Post content. |
| 306 |
* |
| 307 |
* @return string HTML for recipe notes shortcode. |
| 308 |
*/ |
| 309 |
static function recipe_notes_shortcode( $atts, $content = '' ) { |
| 310 |
$atts = shortcode_atts( |
| 311 |
array( |
| 312 |
'title' => '', // string. |
| 313 |
), |
| 314 |
$atts, |
| 315 |
'recipe-notes' |
| 316 |
); |
| 317 |
|
| 318 |
$html = ''; |
| 319 |
|
| 320 |
// Print a title if one exists. |
| 321 |
if ( '' !== $atts['title'] ) { |
| 322 |
$html .= '<h4 class="jetpack-recipe-notes-title">' . esc_html( $atts['title'] ) . '</h4>'; |
| 323 |
} |
| 324 |
|
| 325 |
$html .= '<div class="jetpack-recipe-notes">'; |
| 326 |
|
| 327 |
// Format content using list functionality, if desired. |
| 328 |
$html .= self::output_list_content( $content, 'notes' ); |
| 329 |
|
| 330 |
$html .= '</div>'; |
| 331 |
|
| 332 |
// Sanitize html. |
| 333 |
$html = wp_kses_post( $html ); |
| 334 |
|
| 335 |
// Return the HTML block. |
| 336 |
return $html; |
| 337 |
} |
| 338 |
|
| 339 |
/** |
| 340 |
* Our [recipe-ingredients] shortcode. |
| 341 |
* Outputs notes, styled in a div. |
| 342 |
* |
| 343 |
* @param array $atts Array of shortcode attributes. |
| 344 |
* @param string $content Post content. |
| 345 |
* |
| 346 |
* @return string HTML for recipe ingredients shortcode. |
| 347 |
*/ |
| 348 |
static function recipe_ingredients_shortcode( $atts, $content = '' ) { |
| 349 |
$atts = shortcode_atts( |
| 350 |
array( |
| 351 |
'title' => esc_html_x( 'Ingredients', 'recipe', 'jetpack' ), // string. |
| 352 |
), |
| 353 |
$atts, |
| 354 |
'recipe-ingredients' |
| 355 |
); |
| 356 |
|
| 357 |
$html = '<div class="jetpack-recipe-ingredients">'; |
| 358 |
|
| 359 |
// Print a title unless the user has opted to exclude it. |
| 360 |
if ( 'false' !== $atts['title'] ) { |
| 361 |
$html .= '<h4 class="jetpack-recipe-ingredients-title">' . esc_html( $atts['title'] ) . '</h4>'; |
| 362 |
} |
| 363 |
|
| 364 |
// Format content using list functionality. |
| 365 |
$html .= self::output_list_content( $content, 'ingredients' ); |
| 366 |
|
| 367 |
$html .= '</div>'; |
| 368 |
|
| 369 |
// Sanitize html. |
| 370 |
$html = wp_kses_post( $html ); |
| 371 |
|
| 372 |
// Return the HTML block. |
| 373 |
return $html; |
| 374 |
} |
| 375 |
|
| 376 |
/** |
| 377 |
* Reusable function to check for shortened formatting. |
| 378 |
* Basically, users can create lists with the following shorthand: |
| 379 |
* - item one |
| 380 |
* - item two |
| 381 |
* - item three |
| 382 |
* And we'll magically convert it to a list. This has the added benefit |
| 383 |
* of including itemprops for the recipe schema. |
| 384 |
* |
| 385 |
* @param string $content HTML content. |
| 386 |
* @param string $type Type of list. |
| 387 |
* |
| 388 |
* @return string content formatted as a list item |
| 389 |
*/ |
| 390 |
static function output_list_content( $content, $type ) { |
| 391 |
$html = ''; |
| 392 |
|
| 393 |
switch ( $type ) { |
| 394 |
case 'directions': |
| 395 |
$list_item_replacement = '<li class="jetpack-recipe-directions">${1}</li>'; |
| 396 |
$itemprop = ' itemprop="recipeInstructions"'; |
| 397 |
$listtype = 'ol'; |
| 398 |
break; |
| 399 |
case 'ingredients': |
| 400 |
$list_item_replacement = '<li class="jetpack-recipe-ingredient" itemprop="recipeIngredient">${1}</li>'; |
| 401 |
$itemprop = ''; |
| 402 |
$listtype = 'ul'; |
| 403 |
break; |
| 404 |
default: |
| 405 |
$list_item_replacement = '<li class="jetpack-recipe-notes">${1}</li>'; |
| 406 |
$itemprop = ''; |
| 407 |
$listtype = 'ul'; |
| 408 |
} |
| 409 |
|
| 410 |
// Check to see if the user is trying to use shortened formatting. |
| 411 |
if ( |
| 412 |
strpos( $content, '–' ) !== false || |
| 413 |
strpos( $content, '—' ) !== false || |
| 414 |
strpos( $content, '-' ) !== false || |
| 415 |
strpos( $content, '*' ) !== false || |
| 416 |
strpos( $content, '#' ) !== false || |
| 417 |
strpos( $content, '–' ) !== false || // ndash. |
| 418 |
strpos( $content, '—' ) !== false || // mdash. |
| 419 |
preg_match( '/\d+\.\s/', $content ) |
| 420 |
) { |
| 421 |
// Remove breaks and extra whitespace. |
| 422 |
$content = str_replace( "<br />\n", "\n", $content ); |
| 423 |
$content = trim( $content ); |
| 424 |
|
| 425 |
$ul_pattern = '/(?:^|\n|\<p\>)+(?:[\-–—]+|\–|\—|\*)+\h+(.*)/mi'; |
| 426 |
$ol_pattern = '/(?:^|\n|\<p\>)+(?:\d+\.|#+)+\h+(.*)/mi'; |
| 427 |
|
| 428 |
preg_match_all( $ul_pattern, $content, $ul_matches ); |
| 429 |
preg_match_all( $ol_pattern, $content, $ol_matches ); |
| 430 |
|
| 431 |
if ( 0 !== count( $ul_matches[0] ) || 0 !== count( $ol_matches[0] ) ) { |
| 432 |
|
| 433 |
if ( 0 !== count( $ol_matches[0] ) ) { |
| 434 |
$listtype = 'ol'; |
| 435 |
$list_item_pattern = $ol_pattern; |
| 436 |
} else { |
| 437 |
$listtype = 'ul'; |
| 438 |
$list_item_pattern = $ul_pattern; |
| 439 |
} |
| 440 |
$html .= '<' . $listtype . $itemprop . '>'; |
| 441 |
$html .= preg_replace( $list_item_pattern, $list_item_replacement, $content ); |
| 442 |
$html .= '</' . $listtype . '>'; |
| 443 |
|
| 444 |
// Strip out any empty <p> tags and stray </p> tags, because those are just silly. |
| 445 |
$empty_p_pattern = '/(<p>)*\s*<\/p>/mi'; |
| 446 |
$html = preg_replace( $empty_p_pattern, '', $html ); |
| 447 |
} else { |
| 448 |
$html .= do_shortcode( $content ); |
| 449 |
} |
| 450 |
} else { |
| 451 |
$html .= do_shortcode( $content ); |
| 452 |
} |
| 453 |
|
| 454 |
// Return our formatted content. |
| 455 |
return $html; |
| 456 |
} |
| 457 |
|
| 458 |
/** |
| 459 |
* Our [recipe-directions] shortcode. |
| 460 |
* Outputs directions, styled in a div. |
| 461 |
* |
| 462 |
* @param array $atts Array of shortcode attributes. |
| 463 |
* @param string $content Post content. |
| 464 |
* |
| 465 |
* @return string HTML for recipe directions shortcode. |
| 466 |
*/ |
| 467 |
static function recipe_directions_shortcode( $atts, $content = '' ) { |
| 468 |
$atts = shortcode_atts( |
| 469 |
array( |
| 470 |
'title' => esc_html_x( 'Directions', 'recipe', 'jetpack' ), // string. |
| 471 |
), |
| 472 |
$atts, |
| 473 |
'recipe-directions' |
| 474 |
); |
| 475 |
|
| 476 |
$html = '<div class="jetpack-recipe-directions">'; |
| 477 |
|
| 478 |
// Print a title unless the user has specified to exclude it. |
| 479 |
if ( 'false' !== $atts['title'] ) { |
| 480 |
$html .= '<h4 class="jetpack-recipe-directions-title">' . esc_html( $atts['title'] ) . '</h4>'; |
| 481 |
} |
| 482 |
|
| 483 |
// Format content using list functionality. |
| 484 |
$html .= self::output_list_content( $content, 'directions' ); |
| 485 |
|
| 486 |
$html .= '</div>'; |
| 487 |
|
| 488 |
// Sanitize html. |
| 489 |
$html = wp_kses_post( $html ); |
| 490 |
|
| 491 |
// Return the HTML block. |
| 492 |
return $html; |
| 493 |
} |
| 494 |
|
| 495 |
/** |
| 496 |
* Use $themecolors array to style the Recipes shortcode |
| 497 |
* |
| 498 |
* @print style block |
| 499 |
* @return string $style |
| 500 |
*/ |
| 501 |
function themecolor_styles() { |
| 502 |
global $themecolors; |
| 503 |
$style = ''; |
| 504 |
|
| 505 |
if ( isset( $themecolors ) ) { |
| 506 |
$style .= '.jetpack-recipe { border-color: #' . esc_attr( $themecolors['border'] ) . '; }'; |
| 507 |
$style .= '.jetpack-recipe-title { border-bottom-color: #' . esc_attr( $themecolors['link'] ) . '; }'; |
| 508 |
} |
| 509 |
|
| 510 |
return $style; |
| 511 |
} |
| 512 |
|
| 513 |
} |
| 514 |
|
| 515 |
new Jetpack_Recipes(); |
| 516 |
|
