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slideshow.php
320 lines
| 1 | <?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
| 2 | |
| 3 | use Automattic\Jetpack\Assets; |
| 4 | use Automattic\Jetpack\Extensions\Slideshow; |
| 5 | |
| 6 | /** |
| 7 | * Slideshow shortcode. |
| 8 | * Adds a new "slideshow" gallery type when adding a gallery using the classic editor. |
| 9 | * |
| 10 | * @package automattic/jetpack |
| 11 | */ |
| 12 | |
| 13 | /** |
| 14 | * Slideshow shortcode usage: [gallery type="slideshow"] or the older [slideshow] |
| 15 | * |
| 16 | * @phan-constructor-used-for-side-effects |
| 17 | */ |
| 18 | class Jetpack_Slideshow_Shortcode { |
| 19 | /** |
| 20 | * Number of slideshows on a page. |
| 21 | * |
| 22 | * @var int |
| 23 | */ |
| 24 | public $instance_count = 0; |
| 25 | |
| 26 | /** |
| 27 | * Constructor |
| 28 | */ |
| 29 | public function __construct() { |
| 30 | global $shortcode_tags; |
| 31 | |
| 32 | // Only if the slideshow shortcode has not already been defined. |
| 33 | if ( ! array_key_exists( 'slideshow', $shortcode_tags ) ) { |
| 34 | add_shortcode( 'slideshow', array( $this, 'shortcode_callback' ) ); |
| 35 | } |
| 36 | |
| 37 | // Only if the gallery shortcode has not been redefined. |
| 38 | if ( isset( $shortcode_tags['gallery'] ) && 'gallery_shortcode' === $shortcode_tags['gallery'] ) { |
| 39 | add_filter( 'post_gallery', array( $this, 'post_gallery' ), 1002, 2 ); |
| 40 | add_filter( 'jetpack_gallery_types', array( $this, 'add_gallery_type' ), 10 ); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Responds to the [gallery] shortcode, but not an actual shortcode callback. |
| 46 | * |
| 47 | * @param string $value An empty string if nothing has modified the gallery output, the output html otherwise. |
| 48 | * @param array $attr The shortcode attributes array. |
| 49 | * |
| 50 | * @return string The (un)modified $value |
| 51 | */ |
| 52 | public function post_gallery( $value, $attr ) { |
| 53 | // Bail if somebody else has done something. |
| 54 | if ( ! empty( $value ) ) { |
| 55 | return $value; |
| 56 | } |
| 57 | |
| 58 | // If [gallery type="slideshow"] have it behave just like [slideshow]. |
| 59 | if ( ! empty( $attr['type'] ) && 'slideshow' === $attr['type'] ) { |
| 60 | return $this->shortcode_callback( $attr ); |
| 61 | } |
| 62 | |
| 63 | return $value; |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Add the Slideshow type to gallery settings |
| 68 | * |
| 69 | * @see Jetpack_Tiled_Gallery::media_ui_print_templates |
| 70 | * |
| 71 | * @param array $types An array of types where the key is the value, and the value is the caption. |
| 72 | * |
| 73 | * @return array |
| 74 | */ |
| 75 | public function add_gallery_type( $types = array() ) { |
| 76 | $types['slideshow'] = esc_html__( 'Slideshow', 'jetpack' ); |
| 77 | |
| 78 | return $types; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Display shortcode. |
| 83 | * |
| 84 | * @param array $attr Shortcode attributes. |
| 85 | */ |
| 86 | public function shortcode_callback( $attr ) { |
| 87 | $post_id = get_the_ID(); |
| 88 | |
| 89 | $attr = shortcode_atts( |
| 90 | array( |
| 91 | 'trans' => 'fade', |
| 92 | 'order' => 'ASC', |
| 93 | 'orderby' => 'menu_order ID', |
| 94 | 'id' => $post_id, |
| 95 | 'include' => '', |
| 96 | 'exclude' => '', |
| 97 | 'autostart' => true, |
| 98 | 'size' => '', |
| 99 | ), |
| 100 | $attr, |
| 101 | 'slideshow' |
| 102 | ); |
| 103 | |
| 104 | if ( 'rand' === strtolower( $attr['order'] ) ) { |
| 105 | $attr['orderby'] = 'none'; |
| 106 | } |
| 107 | |
| 108 | $attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] ); |
| 109 | if ( ! $attr['orderby'] ) { |
| 110 | $attr['orderby'] = 'menu_order ID'; |
| 111 | } |
| 112 | |
| 113 | if ( ! $attr['size'] ) { |
| 114 | $attr['size'] = 'full'; |
| 115 | } |
| 116 | |
| 117 | // Don't restrict to the current post if include. |
| 118 | $post_parent = ( empty( $attr['include'] ) ) ? (int) $attr['id'] : null; |
| 119 | |
| 120 | $attachments = get_posts( |
| 121 | array( |
| 122 | 'post_status' => 'inherit', |
| 123 | 'post_type' => 'attachment', |
| 124 | 'post_mime_type' => 'image', |
| 125 | 'posts_per_page' => - 1, |
| 126 | 'post_parent' => $post_parent, |
| 127 | 'order' => $attr['order'], |
| 128 | 'orderby' => $attr['orderby'], |
| 129 | 'include' => $attr['include'], |
| 130 | 'exclude' => $attr['exclude'], |
| 131 | 'suppress_filters' => false, |
| 132 | ) |
| 133 | ); |
| 134 | |
| 135 | if ( ! is_countable( $attachments ) || count( $attachments ) < 1 ) { |
| 136 | return false; |
| 137 | } |
| 138 | |
| 139 | $gallery_instance = sprintf( 'gallery-%d-%d', $attr['id'], ++$this->instance_count ); |
| 140 | |
| 141 | $gallery = array(); |
| 142 | foreach ( $attachments as $attachment ) { |
| 143 | $attachment_image_src = wp_get_attachment_image_src( $attachment->ID, $attr['size'] ); |
| 144 | $attachment_image_src = false !== $attachment_image_src ? $attachment_image_src[0] : ''; // [url, width, height]. |
| 145 | $attachment_image_title = get_the_title( $attachment->ID ); |
| 146 | $attachment_image_alt = get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ); |
| 147 | /** |
| 148 | * Filters the Slideshow slide caption. |
| 149 | * |
| 150 | * @module shortcodes |
| 151 | * |
| 152 | * @since 2.3.0 |
| 153 | * |
| 154 | * @param string wptexturize( strip_tags( $attachment->post_excerpt ) ) Post excerpt. |
| 155 | * @param string $attachment ->ID Attachment ID. |
| 156 | */ |
| 157 | $caption = apply_filters( 'jetpack_slideshow_slide_caption', wptexturize( wp_strip_all_tags( $attachment->post_excerpt ) ), $attachment->ID ); |
| 158 | |
| 159 | $gallery[] = (object) array( |
| 160 | 'src' => (string) esc_url_raw( $attachment_image_src ), |
| 161 | 'id' => (string) $attachment->ID, |
| 162 | 'title' => (string) esc_attr( $attachment_image_title ), |
| 163 | 'alt' => (string) esc_attr( $attachment_image_alt ), |
| 164 | 'caption' => (string) $caption, |
| 165 | 'itemprop' => 'image', |
| 166 | ); |
| 167 | } |
| 168 | |
| 169 | $color = Jetpack_Options::get_option( 'slideshow_background_color', 'black' ); |
| 170 | $autostart = $attr['autostart'] ? $attr['autostart'] : 'true'; |
| 171 | $js_attr = array( |
| 172 | 'gallery' => $gallery, |
| 173 | 'selector' => $gallery_instance, |
| 174 | 'trans' => $attr['trans'] ? $attr['trans'] : 'fade', |
| 175 | 'autostart' => $autostart, |
| 176 | 'color' => $color, |
| 177 | ); |
| 178 | |
| 179 | // Show a link to the gallery in feeds. |
| 180 | if ( is_feed() ) { |
| 181 | return sprintf( |
| 182 | '<a href="%s">%s</a>', |
| 183 | esc_url( get_permalink( $post_id ) . '#' . $gallery_instance . '-slideshow' ), |
| 184 | esc_html__( 'Click to view slideshow.', 'jetpack' ) |
| 185 | ); |
| 186 | } |
| 187 | |
| 188 | if ( |
| 189 | class_exists( 'Jetpack_AMP_Support' ) |
| 190 | && Jetpack_AMP_Support::is_amp_request() |
| 191 | ) { |
| 192 | // Load the styles and use the rendering method from the Slideshow block. |
| 193 | Jetpack_Gutenberg::load_styles_as_required( 'slideshow' ); |
| 194 | |
| 195 | $amp_args = array( |
| 196 | 'ids' => wp_list_pluck( $gallery, 'id' ), |
| 197 | ); |
| 198 | |
| 199 | if ( 'true' == $autostart ) { // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual -- attribute can be stored as boolean or string. |
| 200 | $amp_args['autoplay'] = true; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * Blocks can be disabled in Jetpack Settings. |
| 205 | * If that's the case, we need to include the slideshow block manually. |
| 206 | */ |
| 207 | if ( ! class_exists( 'Automattic\Jetpack\Extensions\Slideshow' ) ) { |
| 208 | require_once JETPACK__PLUGIN_DIR . 'extensions/blocks/slideshow/slideshow.php'; |
| 209 | } |
| 210 | |
| 211 | return Slideshow\render_amp( $amp_args ); |
| 212 | } |
| 213 | |
| 214 | return $this->slideshow_js( $js_attr ); |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Render the slideshow js |
| 219 | * |
| 220 | * Returns the necessary markup and js to fire a slideshow. |
| 221 | * |
| 222 | * @param array $attr Attributes for the slideshow. |
| 223 | * |
| 224 | * @uses $this->enqueue_scripts() |
| 225 | * |
| 226 | * @return string HTML output. |
| 227 | */ |
| 228 | public function slideshow_js( $attr ) { |
| 229 | // Enqueue scripts. |
| 230 | $this->enqueue_scripts(); |
| 231 | |
| 232 | $output = '<p class="jetpack-slideshow-noscript robots-nocontent">' . esc_html__( 'This slideshow requires JavaScript.', 'jetpack' ) . '</p>'; |
| 233 | |
| 234 | /* |
| 235 | * Checking for JSON_HEX_AMP and friends here allows us to get rid of |
| 236 | * '"', that can sometimes be included in the JSON input in some languages like French. |
| 237 | */ |
| 238 | $gallery_attributes = _wp_specialchars( |
| 239 | wp_check_invalid_utf8( |
| 240 | wp_json_encode( $attr['gallery'], JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT ) |
| 241 | ), |
| 242 | ENT_QUOTES, |
| 243 | false, |
| 244 | true |
| 245 | ); |
| 246 | |
| 247 | $output .= sprintf( |
| 248 | '<div id="%s" class="jetpack-slideshow-window jetpack-slideshow jetpack-slideshow-%s" data-trans="%s" data-autostart="%s" data-gallery="%s" itemscope itemtype="https://schema.org/ImageGallery"></div>', |
| 249 | esc_attr( $attr['selector'] . '-slideshow' ), |
| 250 | esc_attr( $attr['color'] ), |
| 251 | esc_attr( $attr['trans'] ), |
| 252 | esc_attr( $attr['autostart'] ), |
| 253 | $gallery_attributes |
| 254 | ); |
| 255 | |
| 256 | return $output; |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Actually enqueues the scripts and styles. |
| 261 | */ |
| 262 | public function enqueue_scripts() { |
| 263 | |
| 264 | wp_enqueue_script( 'jquery-cycle', plugins_url( '/js/jquery.cycle.min.js', __FILE__ ), array( 'jquery' ), '20161231', true ); |
| 265 | wp_enqueue_script( |
| 266 | 'jetpack-slideshow', |
| 267 | Assets::get_file_url_for_environment( '_inc/build/shortcodes/js/slideshow-shortcode.min.js', 'modules/shortcodes/js/slideshow-shortcode.js' ), |
| 268 | array( 'jquery', 'jquery-cycle' ), |
| 269 | '20160119.1', |
| 270 | true |
| 271 | ); |
| 272 | wp_enqueue_style( |
| 273 | 'jetpack-slideshow', |
| 274 | plugins_url( '/css/slideshow-shortcode.css', __FILE__ ), |
| 275 | array(), |
| 276 | JETPACK__VERSION |
| 277 | ); |
| 278 | wp_style_add_data( 'jetpack-slideshow', 'rtl', 'replace' ); |
| 279 | |
| 280 | wp_localize_script( |
| 281 | 'jetpack-slideshow', |
| 282 | 'jetpackSlideshowSettings', |
| 283 | /** |
| 284 | * Filters the slideshow JavaScript spinner. |
| 285 | * |
| 286 | * @module shortcodes |
| 287 | * |
| 288 | * @since 2.1.0 |
| 289 | * @since 4.7.0 Added the `speed` option to the array of options. |
| 290 | * |
| 291 | * @param array $args |
| 292 | * - string - spinner - URL of the spinner image. |
| 293 | * - string - speed - Speed of the slideshow. Defaults to 4000. |
| 294 | * - string - label_prev - Aria label for slideshow's previous button |
| 295 | * - string - label_stop - Aria label for slideshow's pause button |
| 296 | * - string - label_next - Aria label for slideshow's next button |
| 297 | */ |
| 298 | apply_filters( |
| 299 | 'jetpack_js_slideshow_settings', |
| 300 | array( |
| 301 | 'spinner' => plugins_url( '/img/slideshow-loader.gif', __FILE__ ), |
| 302 | 'speed' => '4000', |
| 303 | 'label_prev' => __( 'Previous Slide', 'jetpack' ), |
| 304 | 'label_stop' => __( 'Pause Slideshow', 'jetpack' ), |
| 305 | 'label_next' => __( 'Next Slide', 'jetpack' ), |
| 306 | ) |
| 307 | ) |
| 308 | ); |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * Instantiate shortcode. |
| 313 | */ |
| 314 | public static function init() { |
| 315 | new Jetpack_Slideshow_Shortcode(); |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | Jetpack_Slideshow_Shortcode::init(); |
| 320 |