infinity.php
| 1 | <?php |
| 2 | |
| 3 | /* |
| 4 | Plugin Name: The Neverending Home Page. |
| 5 | Plugin URI: http://automattic.com/ |
| 6 | Description: Adds infinite scrolling support to the front-end blog post view for themes, pulling the next set of posts automatically into view when the reader approaches the bottom of the page. |
| 7 | Version: 1.1 |
| 8 | Author: Automattic |
| 9 | Author URI: http://automattic.com/ |
| 10 | License: GNU General Public License v2 or later |
| 11 | License URI: http://www.gnu.org/licenses/gpl-2.0.html |
| 12 | */ |
| 13 | |
| 14 | /** |
| 15 | * Class: The_Neverending_Home_Page relies on add_theme_support, expects specific |
| 16 | * styling from each theme; including fixed footer. |
| 17 | */ |
| 18 | class The_Neverending_Home_Page { |
| 19 | /** |
| 20 | * Register actions and filters, plus parse IS settings |
| 21 | * |
| 22 | * @uses add_action, add_filter, self::get_settings |
| 23 | * @return null |
| 24 | */ |
| 25 | function __construct() { |
| 26 | add_action( 'pre_get_posts', array( $this, 'posts_per_page_query' ) ); |
| 27 | |
| 28 | add_action( 'admin_init', array( $this, 'settings_api_init' ) ); |
| 29 | add_action( 'template_redirect', array( $this, 'action_template_redirect' ) ); |
| 30 | add_action( 'template_redirect', array( $this, 'ajax_response' ) ); |
| 31 | add_action( 'custom_ajax_infinite_scroll', array( $this, 'query' ) ); |
| 32 | add_filter( 'infinite_scroll_query_args', array( $this, 'inject_query_args' ) ); |
| 33 | add_filter( 'infinite_scroll_allowed_vars', array( $this, 'allowed_query_vars' ) ); |
| 34 | add_action( 'the_post', array( $this, 'preserve_more_tag' ) ); |
| 35 | add_action( 'wp_footer', array( $this, 'footer' ) ); |
| 36 | |
| 37 | // Plugin compatibility |
| 38 | add_filter( 'grunion_contact_form_redirect_url', array( $this, 'filter_grunion_redirect_url' ) ); |
| 39 | |
| 40 | // Parse IS settings from theme |
| 41 | self::get_settings(); |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Initialize our static variables |
| 46 | */ |
| 47 | static $the_time = null; |
| 48 | static $settings = null; // Don't access directly, instead use self::get_settings(). |
| 49 | |
| 50 | static $option_name_enabled = 'infinite_scroll'; |
| 51 | |
| 52 | /** |
| 53 | * Parse IS settings provided by theme |
| 54 | * |
| 55 | * @uses get_theme_support, infinite_scroll_has_footer_widgets, sanitize_title, add_action, get_option, wp_parse_args, is_active_sidebar |
| 56 | * @return object |
| 57 | */ |
| 58 | static function get_settings() { |
| 59 | if ( is_null( self::$settings ) ) { |
| 60 | $css_pattern = '#[^A-Z\d\-_]#i'; |
| 61 | |
| 62 | $settings = $defaults = array( |
| 63 | 'type' => 'scroll', // scroll | click |
| 64 | 'requested_type' => 'scroll', // store the original type for use when logic overrides it |
| 65 | 'footer_widgets' => false, // true | false | sidebar_id | array of sidebar_ids -- last two are checked with is_active_sidebar |
| 66 | 'container' => 'content', // container html id |
| 67 | 'wrapper' => true, // true | false | html class |
| 68 | 'render' => false, // optional function, otherwise the `content` template part will be used |
| 69 | 'footer' => true, // boolean to enable or disable the infinite footer | string to provide an html id to derive footer width from |
| 70 | 'footer_callback' => false, // function to be called to render the IS footer, in place of the default |
| 71 | 'posts_per_page' => false, // int | false to set based on IS type |
| 72 | 'click_handle' => true, // boolean to enable or disable rendering the click handler div. If type is click and this is false, page must include its own trigger with the HTML ID `infinite-handle`. |
| 73 | ); |
| 74 | |
| 75 | // Validate settings passed through add_theme_support() |
| 76 | $_settings = get_theme_support( 'infinite-scroll' ); |
| 77 | |
| 78 | if ( is_array( $_settings ) ) { |
| 79 | // Preferred implementation, where theme provides an array of options |
| 80 | if ( isset( $_settings[0] ) && is_array( $_settings[0] ) ) { |
| 81 | foreach ( $_settings[0] as $key => $value ) { |
| 82 | switch ( $key ) { |
| 83 | case 'type' : |
| 84 | if ( in_array( $value, array( 'scroll', 'click' ) ) ) |
| 85 | $settings[ $key ] = $settings['requested_type'] = $value; |
| 86 | |
| 87 | break; |
| 88 | |
| 89 | case 'footer_widgets' : |
| 90 | if ( is_string( $value ) ) |
| 91 | $settings[ $key ] = sanitize_title( $value ); |
| 92 | elseif ( is_array( $value ) ) |
| 93 | $settings[ $key ] = array_map( 'sanitize_title', $value ); |
| 94 | elseif ( is_bool( $value ) ) |
| 95 | $settings[ $key ] = $value; |
| 96 | |
| 97 | break; |
| 98 | |
| 99 | case 'container' : |
| 100 | case 'wrapper' : |
| 101 | if ( 'wrapper' == $key && is_bool( $value ) ) { |
| 102 | $settings[ $key ] = $value; |
| 103 | } else { |
| 104 | $value = preg_replace( $css_pattern, '', $value ); |
| 105 | |
| 106 | if ( ! empty( $value ) ) |
| 107 | $settings[ $key ] = $value; |
| 108 | } |
| 109 | |
| 110 | break; |
| 111 | |
| 112 | case 'render' : |
| 113 | if ( false !== $value && is_callable( $value ) ) { |
| 114 | $settings[ $key ] = $value; |
| 115 | } |
| 116 | |
| 117 | break; |
| 118 | |
| 119 | case 'footer' : |
| 120 | if ( is_bool( $value ) ) { |
| 121 | $settings[ $key ] = $value; |
| 122 | } elseif ( is_string( $value ) ) { |
| 123 | $value = preg_replace( $css_pattern, '', $value ); |
| 124 | |
| 125 | if ( ! empty( $value ) ) |
| 126 | $settings[ $key ] = $value; |
| 127 | } |
| 128 | |
| 129 | break; |
| 130 | |
| 131 | case 'footer_callback' : |
| 132 | if ( is_callable( $value ) ) |
| 133 | $settings[ $key ] = $value; |
| 134 | else |
| 135 | $settings[ $key ] = false; |
| 136 | |
| 137 | break; |
| 138 | |
| 139 | case 'posts_per_page' : |
| 140 | if ( is_numeric( $value ) ) |
| 141 | $settings[ $key ] = (int) $value; |
| 142 | |
| 143 | break; |
| 144 | |
| 145 | case 'click_handle' : |
| 146 | if ( is_bool( $value ) ) { |
| 147 | $settings[ $key ] = $value; |
| 148 | } |
| 149 | |
| 150 | break; |
| 151 | |
| 152 | default: |
| 153 | continue; |
| 154 | |
| 155 | break; |
| 156 | } |
| 157 | } |
| 158 | } elseif ( is_string( $_settings[0] ) ) { |
| 159 | // Checks below are for backwards compatibility |
| 160 | |
| 161 | // Container to append new posts to |
| 162 | $settings['container'] = preg_replace( $css_pattern, '', $_settings[0] ); |
| 163 | |
| 164 | // Wrap IS elements? |
| 165 | if ( isset( $_settings[1] ) ) |
| 166 | $settings['wrapper'] = (bool) $_settings[1]; |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | // Always ensure all values are present in the final array |
| 171 | $settings = wp_parse_args( $settings, $defaults ); |
| 172 | |
| 173 | // Check if a legacy `infinite_scroll_has_footer_widgets()` function is defined and override the footer_widgets parameter's value. |
| 174 | // Otherwise, if a widget area ID or array of IDs was provided in the footer_widgets parameter, check if any contains any widgets. |
| 175 | // It is safe to use `is_active_sidebar()` before the sidebar is registered as this function doesn't check for a sidebar's existence when determining if it contains any widgets. |
| 176 | if ( function_exists( 'infinite_scroll_has_footer_widgets' ) ) { |
| 177 | $settings['footer_widgets'] = (bool) infinite_scroll_has_footer_widgets(); |
| 178 | } elseif ( is_array( $settings['footer_widgets'] ) ) { |
| 179 | $sidebar_ids = $settings['footer_widgets']; |
| 180 | $settings['footer_widgets'] = false; |
| 181 | |
| 182 | foreach ( $sidebar_ids as $sidebar_id ) { |
| 183 | if ( is_active_sidebar( $sidebar_id ) ) { |
| 184 | $settings['footer_widgets'] = true; |
| 185 | break; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | unset( $sidebar_ids ); |
| 190 | unset( $sidebar_id ); |
| 191 | } elseif ( is_string( $settings['footer_widgets'] ) ) { |
| 192 | $settings['footer_widgets'] = (bool) is_active_sidebar( $settings['footer_widgets'] ); |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Filter Infinite Scroll's `footer_widgets` parameter. |
| 197 | * |
| 198 | * @module infinite-scroll |
| 199 | * |
| 200 | * @since 2.0.0 |
| 201 | * |
| 202 | * @param bool $settings['footer_widgets'] Does the current theme have Footer Widgets. |
| 203 | */ |
| 204 | $settings['footer_widgets'] = apply_filters( 'infinite_scroll_has_footer_widgets', $settings['footer_widgets'] ); |
| 205 | |
| 206 | // Finally, after all of the sidebar checks and filtering, ensure that a boolean value is present, otherwise set to default of `false`. |
| 207 | if ( ! is_bool( $settings['footer_widgets'] ) ) |
| 208 | $settings['footer_widgets'] = false; |
| 209 | |
| 210 | // Ensure that IS is enabled and no footer widgets exist if the IS type isn't already "click". |
| 211 | if ( 'click' != $settings['type'] ) { |
| 212 | // Check the setting status |
| 213 | $disabled = '' === get_option( self::$option_name_enabled ) ? true : false; |
| 214 | |
| 215 | // Footer content or Reading option check |
| 216 | if ( $settings['footer_widgets'] || $disabled ) |
| 217 | $settings['type'] = 'click'; |
| 218 | } |
| 219 | |
| 220 | // Force display of the click handler and attendant bits when the type isn't `click` |
| 221 | if ( 'click' !== $settings['type'] ) { |
| 222 | $settings['click_handle'] = true; |
| 223 | } |
| 224 | |
| 225 | // Store final settings in a class static to avoid reparsing |
| 226 | /** |
| 227 | * Filter the array of Infinite Scroll settings. |
| 228 | * |
| 229 | * @module infinite-scroll |
| 230 | * |
| 231 | * @since 2.0.0 |
| 232 | * |
| 233 | * @param array $settings Array of Infinite Scroll settings. |
| 234 | */ |
| 235 | self::$settings = apply_filters( 'infinite_scroll_settings', $settings ); |
| 236 | } |
| 237 | |
| 238 | /** This filter is already documented in modules/infinite-scroll/infinity.php */ |
| 239 | return (object) apply_filters( 'infinite_scroll_settings', self::$settings ); |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Number of posts per page. |
| 244 | * |
| 245 | * @uses self::wp_query, self::get_settings, apply_filters |
| 246 | * @return int |
| 247 | */ |
| 248 | static function posts_per_page() { |
| 249 | $posts_per_page = self::get_settings()->posts_per_page ? self::get_settings()->posts_per_page : self::wp_query()->get( 'posts_per_page' ); |
| 250 | |
| 251 | // Take JS query into consideration here |
| 252 | if ( true === isset( $_REQUEST['query_args']['posts_per_page'] ) ) { |
| 253 | $posts_per_page = $_REQUEST['query_args']['posts_per_page']; |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * Filter the number of posts per page. |
| 258 | * |
| 259 | * @module infinite-scroll |
| 260 | * |
| 261 | * @since 6.0.0 |
| 262 | * |
| 263 | * @param int $posts_per_page The number of posts to display per page. |
| 264 | */ |
| 265 | return (int) apply_filters( 'infinite_scroll_posts_per_page', $posts_per_page ); |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Retrieve the query used with Infinite Scroll |
| 270 | * |
| 271 | * @global $wp_the_query |
| 272 | * @uses apply_filters |
| 273 | * @return object |
| 274 | */ |
| 275 | static function wp_query() { |
| 276 | global $wp_the_query; |
| 277 | /** |
| 278 | * Filter the Infinite Scroll query object. |
| 279 | * |
| 280 | * @module infinite-scroll |
| 281 | * |
| 282 | * @since 2.2.1 |
| 283 | * |
| 284 | * @param WP_Query $wp_the_query WP Query. |
| 285 | */ |
| 286 | return apply_filters( 'infinite_scroll_query_object', $wp_the_query ); |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * Has infinite scroll been triggered? |
| 291 | */ |
| 292 | static function got_infinity() { |
| 293 | /** |
| 294 | * Filter the parameter used to check if Infinite Scroll has been triggered. |
| 295 | * |
| 296 | * @module infinite-scroll |
| 297 | * |
| 298 | * @since 3.9.0 |
| 299 | * |
| 300 | * @param bool isset( $_GET[ 'infinity' ] ) Return true if the "infinity" parameter is set. |
| 301 | */ |
| 302 | return apply_filters( 'infinite_scroll_got_infinity', isset( $_GET[ 'infinity' ] ) ); |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Is this guaranteed to be the last batch of posts? |
| 307 | */ |
| 308 | static function is_last_batch() { |
| 309 | /** |
| 310 | * Override whether or not this is the last batch for a request |
| 311 | * |
| 312 | * @module infinite-scroll |
| 313 | * |
| 314 | * @since 4.8.0 |
| 315 | * |
| 316 | * @param bool|null null Bool if value should be overridden, null to determine from query |
| 317 | * @param object self::wp_query() WP_Query object for current request |
| 318 | * @param object self::get_settings() Infinite Scroll settings |
| 319 | */ |
| 320 | $override = apply_filters( 'infinite_scroll_is_last_batch', null, self::wp_query(), self::get_settings() ); |
| 321 | if ( is_bool( $override ) ) { |
| 322 | return $override; |
| 323 | } |
| 324 | |
| 325 | $entries = (int) self::wp_query()->found_posts; |
| 326 | $posts_per_page = self::posts_per_page(); |
| 327 | |
| 328 | // This is to cope with an issue in certain themes or setups where posts are returned but found_posts is 0. |
| 329 | if ( 0 == $entries ) { |
| 330 | return (bool) ( count( self::wp_query()->posts ) < $posts_per_page ); |
| 331 | } |
| 332 | $paged = max( 1, self::wp_query()->get( 'paged' ) ); |
| 333 | |
| 334 | // Are there enough posts for more than the first page? |
| 335 | if ( $entries <= $posts_per_page ) { |
| 336 | return true; |
| 337 | } |
| 338 | |
| 339 | // Calculate entries left after a certain number of pages |
| 340 | if ( $paged && $paged > 1 ) { |
| 341 | $entries -= $posts_per_page * $paged; |
| 342 | } |
| 343 | |
| 344 | // Are there some entries left to display? |
| 345 | return $entries <= 0; |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * The more tag will be ignored by default if the blog page isn't our homepage. |
| 350 | * Let's force the $more global to false. |
| 351 | */ |
| 352 | function preserve_more_tag( $array ) { |
| 353 | global $more; |
| 354 | |
| 355 | if ( self::got_infinity() ) |
| 356 | $more = 0; //0 = show content up to the more tag. Add more link. |
| 357 | |
| 358 | return $array; |
| 359 | } |
| 360 | |
| 361 | /** |
| 362 | * Add a checkbox field to Settings > Reading |
| 363 | * for enabling infinite scroll. |
| 364 | * |
| 365 | * Only show if the current theme supports infinity. |
| 366 | * |
| 367 | * @uses current_theme_supports, add_settings_field, __, register_setting |
| 368 | * @action admin_init |
| 369 | * @return null |
| 370 | */ |
| 371 | function settings_api_init() { |
| 372 | if ( ! current_theme_supports( 'infinite-scroll' ) ) |
| 373 | return; |
| 374 | |
| 375 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 376 | // This setting is no longer configurable in wp-admin on WordPress.com -- leave a pointer |
| 377 | add_settings_field( self::$option_name_enabled, |
| 378 | '<span id="infinite-scroll-options">' . esc_html__( 'Infinite Scroll Behavior', 'jetpack' ) . '</span>', |
| 379 | array( $this, 'infinite_setting_html_calypso_placeholder' ), |
| 380 | 'reading' |
| 381 | ); |
| 382 | return; |
| 383 | } |
| 384 | |
| 385 | // Add the setting field [infinite_scroll] and place it in Settings > Reading |
| 386 | add_settings_field( self::$option_name_enabled, '<span id="infinite-scroll-options">' . esc_html__( 'Infinite Scroll Behavior', 'jetpack' ) . '</span>', array( $this, 'infinite_setting_html' ), 'reading' ); |
| 387 | register_setting( 'reading', self::$option_name_enabled, 'esc_attr' ); |
| 388 | } |
| 389 | |
| 390 | function infinite_setting_html_calypso_placeholder() { |
| 391 | $details = get_blog_details(); |
| 392 | echo '<span>' . sprintf( |
| 393 | /* translators: Variables are the enclosing link to the settings page */ |
| 394 | esc_html__( 'This option has moved. You can now manage it %1$shere%2$s.' ), |
| 395 | '<a href="' . esc_url( 'https://wordpress.com/settings/writing/' . $details->domain ) . '">', |
| 396 | '</a>' |
| 397 | ) . '</span>'; |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * HTML code to display a checkbox true/false option |
| 402 | * for the infinite_scroll setting. |
| 403 | */ |
| 404 | function infinite_setting_html() { |
| 405 | $notice = '<em>' . __( 'We’ve changed this option to a click-to-scroll version for you since you have footer widgets in Appearance → Widgets, or your theme uses click-to-scroll as the default behavior.', 'jetpack' ) . '</em>'; |
| 406 | |
| 407 | // If the blog has footer widgets, show a notice instead of the checkbox |
| 408 | if ( self::get_settings()->footer_widgets || 'click' == self::get_settings()->requested_type ) { |
| 409 | echo '<label>' . $notice . '</label>'; |
| 410 | } else { |
| 411 | echo '<label><input name="infinite_scroll" type="checkbox" value="1" ' . checked( 1, '' !== get_option( self::$option_name_enabled ), false ) . ' /> ' . esc_html__( 'Check to load posts as you scroll. Uncheck to show clickable button to load posts', 'jetpack' ) . '</label>'; |
| 412 | echo '<p class="description">' . esc_html( sprintf( _n( 'Shows %s post on each load.', 'Shows %s posts on each load.', self::posts_per_page(), 'jetpack' ), number_format_i18n( self::posts_per_page() ) ) ) . '</p>'; |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Does the legwork to determine whether the feature is enabled. |
| 418 | * |
| 419 | * @uses current_theme_supports, self::archive_supports_infinity, self::get_settings, add_filter, wp_enqueue_script, plugins_url, wp_enqueue_style, add_action |
| 420 | * @action template_redirect |
| 421 | * @return null |
| 422 | */ |
| 423 | function action_template_redirect() { |
| 424 | // Check that we support infinite scroll, and are on the home page. |
| 425 | if ( ! current_theme_supports( 'infinite-scroll' ) || ! self::archive_supports_infinity() ) |
| 426 | return; |
| 427 | |
| 428 | $id = self::get_settings()->container; |
| 429 | |
| 430 | // Check that we have an id. |
| 431 | if ( empty( $id ) ) |
| 432 | return; |
| 433 | |
| 434 | // Add our scripts. |
| 435 | wp_register_script( |
| 436 | 'the-neverending-homepage', |
| 437 | Jetpack::get_file_url_for_environment( |
| 438 | '_inc/build/infinite-scroll/infinity.min.js', |
| 439 | 'modules/infinite-scroll/infinity.js' |
| 440 | ), |
| 441 | array( 'jquery' ), |
| 442 | '4.0.0', |
| 443 | true |
| 444 | ); |
| 445 | |
| 446 | // Add our default styles. |
| 447 | wp_register_style( 'the-neverending-homepage', plugins_url( 'infinity.css', __FILE__ ), array(), '20140422' ); |
| 448 | |
| 449 | // Make sure there are enough posts for IS |
| 450 | if ( self::is_last_batch() ) { |
| 451 | return; |
| 452 | } |
| 453 | |
| 454 | // Add our scripts. |
| 455 | wp_enqueue_script( 'the-neverending-homepage' ); |
| 456 | |
| 457 | // Add our default styles. |
| 458 | wp_enqueue_style( 'the-neverending-homepage' ); |
| 459 | |
| 460 | add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_spinner_scripts' ) ); |
| 461 | |
| 462 | add_action( 'wp_footer', array( $this, 'action_wp_footer_settings' ), 2 ); |
| 463 | |
| 464 | add_action( 'wp_footer', array( $this, 'action_wp_footer' ), 21 ); // Core prints footer scripts at priority 20, so we just need to be one later than that |
| 465 | |
| 466 | add_filter( 'infinite_scroll_results', array( $this, 'filter_infinite_scroll_results' ), 10, 3 ); |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * Enqueue spinner scripts. |
| 471 | */ |
| 472 | function enqueue_spinner_scripts() { |
| 473 | wp_enqueue_script( 'jquery.spin' ); |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * Returns classes to be added to <body>. If it's enabled, 'infinite-scroll'. If set to continuous scroll, adds 'neverending' too. |
| 478 | * |
| 479 | * @since 4.7.0 No longer added as a 'body_class' filter but passed to JS environment and added using JS. |
| 480 | * |
| 481 | * @return string |
| 482 | */ |
| 483 | function body_class() { |
| 484 | $classes = ''; |
| 485 | // Do not add infinity-scroll class if disabled through the Reading page |
| 486 | $disabled = '' === get_option( self::$option_name_enabled ) ? true : false; |
| 487 | if ( ! $disabled || 'click' == self::get_settings()->type ) { |
| 488 | $classes = 'infinite-scroll'; |
| 489 | |
| 490 | if ( 'scroll' == self::get_settings()->type ) |
| 491 | $classes .= ' neverending'; |
| 492 | } |
| 493 | |
| 494 | return $classes; |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * In case IS is activated on search page, we have to exclude initially loaded posts which match the keyword by title, not the content as they are displayed before content-matching ones |
| 499 | * |
| 500 | * @uses self::wp_query |
| 501 | * @uses self::get_last_post_date |
| 502 | * @uses self::has_only_title_matching_posts |
| 503 | * @return array |
| 504 | */ |
| 505 | function get_excluded_posts() { |
| 506 | |
| 507 | $excluded_posts = array(); |
| 508 | //loop through posts returned by wp_query call |
| 509 | foreach( self::wp_query()->get_posts() as $post ) { |
| 510 | |
| 511 | $orderby = isset( self::wp_query()->query_vars['orderby'] ) ? self::wp_query()->query_vars['orderby'] : ''; |
| 512 | $post_date = ( ! empty( $post->post_date ) ? $post->post_date : false ); |
| 513 | if ( 'modified' === $orderby || false === $post_date ) { |
| 514 | $post_date = $post->post_modified; |
| 515 | } |
| 516 | |
| 517 | //in case all posts initially displayed match the keyword by title we add em all to excluded posts array |
| 518 | //else, we add only posts which are older than last_post_date param as newer are natually excluded by last_post_date condition in the SQL query |
| 519 | if ( self::has_only_title_matching_posts() || $post_date <= self::get_last_post_date() ) { |
| 520 | array_push( $excluded_posts, $post->ID ); |
| 521 | } |
| 522 | } |
| 523 | return $excluded_posts; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * In case IS is active on search, we have to exclude posts matched by title rather than by post_content in order to prevent dupes on next pages |
| 528 | * |
| 529 | * @uses self::wp_query |
| 530 | * @uses self::get_excluded_posts |
| 531 | * @return array |
| 532 | */ |
| 533 | function get_query_vars() { |
| 534 | |
| 535 | $query_vars = self::wp_query()->query_vars; |
| 536 | //applies to search page only |
| 537 | if ( true === self::wp_query()->is_search() ) { |
| 538 | //set post__not_in array in query_vars in case it does not exists |
| 539 | if ( false === isset( $query_vars['post__not_in'] ) ) { |
| 540 | $query_vars['post__not_in'] = array(); |
| 541 | } |
| 542 | //get excluded posts |
| 543 | $excluded = self::get_excluded_posts(); |
| 544 | //merge them with other post__not_in posts (eg.: sticky posts) |
| 545 | $query_vars['post__not_in'] = array_merge( $query_vars['post__not_in'], $excluded ); |
| 546 | } |
| 547 | return $query_vars; |
| 548 | } |
| 549 | |
| 550 | /** |
| 551 | * This function checks whether all posts returned by initial wp_query match the keyword by title |
| 552 | * The code used in this function is borrowed from WP_Query class where it is used to construct like conditions for keywords |
| 553 | * |
| 554 | * @uses self::wp_query |
| 555 | * @return bool |
| 556 | */ |
| 557 | function has_only_title_matching_posts() { |
| 558 | |
| 559 | //apply following logic for search page results only |
| 560 | if ( false === self::wp_query()->is_search() ) { |
| 561 | return false; |
| 562 | } |
| 563 | |
| 564 | //grab the last posts in the stack as if the last one is title-matching the rest is title-matching as well |
| 565 | $post = end( self::wp_query()->posts ); |
| 566 | |
| 567 | //code inspired by WP_Query class |
| 568 | if ( preg_match_all( '/".*?("|$)|((?<=[\t ",+])|^)[^\t ",+]+/', self::wp_query()->get( 's' ), $matches ) ) { |
| 569 | $search_terms = self::wp_query()->query_vars['search_terms']; |
| 570 | // if the search string has only short terms or stopwords, or is 10+ terms long, match it as sentence |
| 571 | if ( empty( $search_terms ) || count( $search_terms ) > 9 ) { |
| 572 | $search_terms = array( self::wp_query()->get( 's' ) ); |
| 573 | } |
| 574 | } else { |
| 575 | $search_terms = array( self::wp_query()->get( 's' ) ); |
| 576 | } |
| 577 | |
| 578 | //actual testing. As search query combines multiple keywords with AND, it's enough to check if any of the keywords is present in the title |
| 579 | $term = current( $search_terms ); |
| 580 | if ( ! empty( $term ) && false !== strpos( $post->post_title, $term ) ) { |
| 581 | return true; |
| 582 | } |
| 583 | |
| 584 | return false; |
| 585 | } |
| 586 | |
| 587 | /** |
| 588 | * Grab the timestamp for the initial query's last post. |
| 589 | * |
| 590 | * This takes into account the query's 'orderby' parameter and returns |
| 591 | * false if the posts are not ordered by date. |
| 592 | * |
| 593 | * @uses self::got_infinity |
| 594 | * @uses self::has_only_title_matching_posts |
| 595 | * @uses self::wp_query |
| 596 | * @return string 'Y-m-d H:i:s' or false |
| 597 | */ |
| 598 | function get_last_post_date() { |
| 599 | if ( self::got_infinity() ) |
| 600 | return; |
| 601 | |
| 602 | if ( ! self::wp_query()->have_posts() ) { |
| 603 | return null; |
| 604 | } |
| 605 | |
| 606 | //In case there are only title-matching posts in the initial WP_Query result, we don't want to use the last_post_date param yet |
| 607 | if ( true === self::has_only_title_matching_posts() ) { |
| 608 | return false; |
| 609 | } |
| 610 | |
| 611 | $post = end( self::wp_query()->posts ); |
| 612 | $orderby = isset( self::wp_query()->query_vars['orderby'] ) ? |
| 613 | self::wp_query()->query_vars['orderby'] : ''; |
| 614 | $post_date = ( ! empty( $post->post_date ) ? $post->post_date : false ); |
| 615 | switch ( $orderby ) { |
| 616 | case 'modified': |
| 617 | return $post->post_modified; |
| 618 | case 'date': |
| 619 | case '': |
| 620 | return $post_date; |
| 621 | default: |
| 622 | return false; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | /** |
| 627 | * Returns the appropriate `wp_posts` table field for a given query's |
| 628 | * 'orderby' parameter, if applicable. |
| 629 | * |
| 630 | * @param optional object $query |
| 631 | * @uses self::wp_query |
| 632 | * @return string or false |
| 633 | */ |
| 634 | function get_query_sort_field( $query = null ) { |
| 635 | if ( empty( $query ) ) |
| 636 | $query = self::wp_query(); |
| 637 | |
| 638 | $orderby = isset( $query->query_vars['orderby'] ) ? $query->query_vars['orderby'] : ''; |
| 639 | |
| 640 | switch ( $orderby ) { |
| 641 | case 'modified': |
| 642 | return 'post_modified'; |
| 643 | case 'date': |
| 644 | case '': |
| 645 | return 'post_date'; |
| 646 | default: |
| 647 | return false; |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | /** |
| 652 | * Create a where clause that will make sure post queries return posts |
| 653 | * in the correct order, without duplicates, if a new post is added |
| 654 | * and we're sorting by post date. |
| 655 | * |
| 656 | * @global $wpdb |
| 657 | * @param string $where |
| 658 | * @param object $query |
| 659 | * @uses apply_filters |
| 660 | * @filter posts_where |
| 661 | * @return string |
| 662 | */ |
| 663 | function query_time_filter( $where, $query ) { |
| 664 | if ( self::got_infinity() ) { |
| 665 | global $wpdb; |
| 666 | |
| 667 | $sort_field = self::get_query_sort_field( $query ); |
| 668 | |
| 669 | if ( 'post_date' !== $sort_field || 'DESC' !== $_REQUEST['query_args']['order'] ) { |
| 670 | return $where; |
| 671 | } |
| 672 | |
| 673 | $query_before = sanitize_text_field( wp_unslash( $_REQUEST['query_before'] ) ); |
| 674 | |
| 675 | if ( empty( $query_before ) ) { |
| 676 | return $where; |
| 677 | } |
| 678 | |
| 679 | // Construct the date query using our timestamp |
| 680 | $clause = $wpdb->prepare( " AND {$wpdb->posts}.post_date <= %s", $query_before ); |
| 681 | |
| 682 | /** |
| 683 | * Filter Infinite Scroll's SQL date query making sure post queries |
| 684 | * will always return results prior to (descending sort) |
| 685 | * or before (ascending sort) the last post date. |
| 686 | * |
| 687 | * @module infinite-scroll |
| 688 | * |
| 689 | * @param string $clause SQL Date query. |
| 690 | * @param object $query Query. |
| 691 | * @param string $operator @deprecated Query operator. |
| 692 | * @param string $last_post_date @deprecated Last Post Date timestamp. |
| 693 | */ |
| 694 | $operator = 'ASC' === $_REQUEST['query_args']['order'] ? '>' : '<'; |
| 695 | $last_post_date = sanitize_text_field( wp_unslash( $_REQUEST['last_post_date'] ) ); |
| 696 | $where .= apply_filters( 'infinite_scroll_posts_where', $clause, $query, $operator, $last_post_date ); |
| 697 | } |
| 698 | |
| 699 | return $where; |
| 700 | } |
| 701 | |
| 702 | /** |
| 703 | * Let's overwrite the default post_per_page setting to always display a fixed amount. |
| 704 | * |
| 705 | * @param object $query |
| 706 | * @uses is_admin, self::archive_supports_infinity, self::get_settings |
| 707 | * @return null |
| 708 | */ |
| 709 | function posts_per_page_query( $query ) { |
| 710 | if ( ! is_admin() && self::archive_supports_infinity() && $query->is_main_query() ) |
| 711 | $query->set( 'posts_per_page', self::posts_per_page() ); |
| 712 | } |
| 713 | |
| 714 | /** |
| 715 | * Check if the IS output should be wrapped in a div. |
| 716 | * Setting value can be a boolean or a string specifying the class applied to the div. |
| 717 | * |
| 718 | * @uses self::get_settings |
| 719 | * @return bool |
| 720 | */ |
| 721 | function has_wrapper() { |
| 722 | return (bool) self::get_settings()->wrapper; |
| 723 | } |
| 724 | |
| 725 | /** |
| 726 | * Returns the Ajax url |
| 727 | * |
| 728 | * @global $wp |
| 729 | * @uses home_url, add_query_arg, apply_filters |
| 730 | * @return string |
| 731 | */ |
| 732 | function ajax_url() { |
| 733 | $base_url = set_url_scheme( home_url( '/' ) ); |
| 734 | |
| 735 | $ajaxurl = add_query_arg( array( 'infinity' => 'scrolling' ), $base_url ); |
| 736 | |
| 737 | /** |
| 738 | * Filter the Infinite Scroll Ajax URL. |
| 739 | * |
| 740 | * @module infinite-scroll |
| 741 | * |
| 742 | * @since 2.0.0 |
| 743 | * |
| 744 | * @param string $ajaxurl Infinite Scroll Ajax URL. |
| 745 | */ |
| 746 | return apply_filters( 'infinite_scroll_ajax_url', $ajaxurl ); |
| 747 | } |
| 748 | |
| 749 | /** |
| 750 | * Our own Ajax response, avoiding calling admin-ajax |
| 751 | */ |
| 752 | function ajax_response() { |
| 753 | // Only proceed if the url query has a key of "Infinity" |
| 754 | if ( ! self::got_infinity() ) |
| 755 | return false; |
| 756 | |
| 757 | // This should already be defined below, but make sure. |
| 758 | if ( ! defined( 'DOING_AJAX' ) ) { |
| 759 | define( 'DOING_AJAX', true ); |
| 760 | } |
| 761 | |
| 762 | @header( 'Content-Type: text/html; charset=' . get_option( 'blog_charset' ) ); |
| 763 | send_nosniff_header(); |
| 764 | |
| 765 | /** |
| 766 | * Fires at the end of the Infinite Scroll Ajax response. |
| 767 | * |
| 768 | * @module infinite-scroll |
| 769 | * |
| 770 | * @since 2.0.0 |
| 771 | */ |
| 772 | do_action( 'custom_ajax_infinite_scroll' ); |
| 773 | die( '0' ); |
| 774 | } |
| 775 | |
| 776 | /** |
| 777 | * Alias for renamed class method. |
| 778 | * |
| 779 | * Previously, JS settings object was unnecessarily output in the document head. |
| 780 | * When the hook was changed, the method name no longer made sense. |
| 781 | */ |
| 782 | function action_wp_head() { |
| 783 | $this->action_wp_footer_settings(); |
| 784 | } |
| 785 | |
| 786 | /** |
| 787 | * Prints the relevant infinite scroll settings in JS. |
| 788 | * |
| 789 | * @global $wp_rewrite |
| 790 | * @uses self::get_settings, esc_js, esc_url_raw, self::has_wrapper, __, apply_filters, do_action, self::get_query_vars |
| 791 | * @action wp_footer |
| 792 | * @return string |
| 793 | */ |
| 794 | function action_wp_footer_settings() { |
| 795 | global $wp_rewrite; |
| 796 | global $currentday; |
| 797 | |
| 798 | // Default click handle text |
| 799 | $click_handle_text = __( 'Older posts', 'jetpack' ); |
| 800 | |
| 801 | // If a single CPT is displayed, use its plural name instead of "posts" |
| 802 | // Could be empty (posts) or an array of multiple post types. |
| 803 | // In the latter two cases cases, the default text is used, leaving the `infinite_scroll_js_settings` filter for further customization. |
| 804 | $post_type = self::wp_query()->get( 'post_type' ); |
| 805 | |
| 806 | // If it's a taxonomy, try to change the button text. |
| 807 | if ( is_tax() ) { |
| 808 | // Get current taxonomy slug. |
| 809 | $taxonomy_slug = self::wp_query()->get( 'taxonomy' ); |
| 810 | |
| 811 | // Get taxonomy settings. |
| 812 | $taxonomy = get_taxonomy( $taxonomy_slug ); |
| 813 | |
| 814 | // Check if the taxonomy is attached to one post type only and use its plural name. |
| 815 | // If not, use "Posts" without confusing the users. |
| 816 | if ( count( $taxonomy->object_type ) < 2 ) { |
| 817 | $post_type = $taxonomy->object_type[0]; |
| 818 | } |
| 819 | } |
| 820 | |
| 821 | if ( is_string( $post_type ) && ! empty( $post_type ) ) { |
| 822 | $post_type = get_post_type_object( $post_type ); |
| 823 | |
| 824 | if ( is_object( $post_type ) && ! is_wp_error( $post_type ) ) { |
| 825 | if ( isset( $post_type->labels->name ) ) { |
| 826 | $cpt_text = $post_type->labels->name; |
| 827 | } elseif ( isset( $post_type->label ) ) { |
| 828 | $cpt_text = $post_type->label; |
| 829 | } |
| 830 | |
| 831 | if ( isset( $cpt_text ) ) { |
| 832 | /* translators: %s is the name of a custom post type */ |
| 833 | $click_handle_text = sprintf( __( 'More %s', 'jetpack' ), $cpt_text ); |
| 834 | unset( $cpt_text ); |
| 835 | } |
| 836 | } |
| 837 | } |
| 838 | |
| 839 | unset( $post_type ); |
| 840 | |
| 841 | // Base JS settings |
| 842 | $js_settings = array( |
| 843 | 'id' => self::get_settings()->container, |
| 844 | 'ajaxurl' => esc_url_raw( self::ajax_url() ), |
| 845 | 'type' => esc_js( self::get_settings()->type ), |
| 846 | 'wrapper' => self::has_wrapper(), |
| 847 | 'wrapper_class' => is_string( self::get_settings()->wrapper ) ? esc_js( self::get_settings()->wrapper ) : 'infinite-wrap', |
| 848 | 'footer' => is_string( self::get_settings()->footer ) ? esc_js( self::get_settings()->footer ) : self::get_settings()->footer, |
| 849 | 'click_handle' => esc_js( self::get_settings()->click_handle ), |
| 850 | 'text' => esc_js( $click_handle_text ), |
| 851 | 'totop' => esc_js( __( 'Scroll back to top', 'jetpack' ) ), |
| 852 | 'currentday' => $currentday, |
| 853 | 'order' => 'DESC', |
| 854 | 'scripts' => array(), |
| 855 | 'styles' => array(), |
| 856 | 'google_analytics' => false, |
| 857 | 'offset' => max( 1, self::wp_query()->get( 'paged' ) ), // Pass through the current page so we can use that to offset the first load. |
| 858 | 'history' => array( |
| 859 | 'host' => preg_replace( '#^http(s)?://#i', '', untrailingslashit( esc_url( get_home_url() ) ) ), |
| 860 | 'path' => self::get_request_path(), |
| 861 | 'use_trailing_slashes' => $wp_rewrite->use_trailing_slashes, |
| 862 | 'parameters' => self::get_request_parameters(), |
| 863 | ), |
| 864 | 'query_args' => self::get_query_vars(), |
| 865 | 'query_before' => current_time( 'mysql' ), |
| 866 | 'last_post_date' => self::get_last_post_date(), |
| 867 | 'body_class' => self::body_class(), |
| 868 | ); |
| 869 | |
| 870 | // Optional order param |
| 871 | if ( isset( $_REQUEST['order'] ) ) { |
| 872 | $order = strtoupper( $_REQUEST['order'] ); |
| 873 | |
| 874 | if ( in_array( $order, array( 'ASC', 'DESC' ) ) ) |
| 875 | $js_settings['order'] = $order; |
| 876 | } |
| 877 | |
| 878 | /** |
| 879 | * Filter the Infinite Scroll JS settings outputted in the head. |
| 880 | * |
| 881 | * @module infinite-scroll |
| 882 | * |
| 883 | * @since 2.0.0 |
| 884 | * |
| 885 | * @param array $js_settings Infinite Scroll JS settings. |
| 886 | */ |
| 887 | $js_settings = apply_filters( 'infinite_scroll_js_settings', $js_settings ); |
| 888 | |
| 889 | /** |
| 890 | * Fires before Infinite Scroll outputs inline JavaScript in the head. |
| 891 | * |
| 892 | * @module infinite-scroll |
| 893 | * |
| 894 | * @since 2.0.0 |
| 895 | */ |
| 896 | do_action( 'infinite_scroll_wp_head' ); |
| 897 | |
| 898 | ?> |
| 899 | <script type="text/javascript"> |
| 900 | //<![CDATA[ |
| 901 | var infiniteScroll = <?php echo json_encode( array( 'settings' => $js_settings ) ); ?>; |
| 902 | //]]> |
| 903 | </script> |
| 904 | <?php |
| 905 | } |
| 906 | |
| 907 | /** |
| 908 | * Build path data for current request. |
| 909 | * Used for Google Analytics and pushState history tracking. |
| 910 | * |
| 911 | * @global $wp_rewrite |
| 912 | * @global $wp |
| 913 | * @uses user_trailingslashit, sanitize_text_field, add_query_arg |
| 914 | * @return string|bool |
| 915 | */ |
| 916 | private function get_request_path() { |
| 917 | global $wp_rewrite; |
| 918 | |
| 919 | if ( $wp_rewrite->using_permalinks() ) { |
| 920 | global $wp; |
| 921 | |
| 922 | // If called too early, bail |
| 923 | if ( ! isset( $wp->request ) ) |
| 924 | return false; |
| 925 | |
| 926 | // Determine path for paginated version of current request |
| 927 | if ( false != preg_match( '#' . $wp_rewrite->pagination_base . '/\d+/?$#i', $wp->request ) ) |
| 928 | $path = preg_replace( '#' . $wp_rewrite->pagination_base . '/\d+$#i', $wp_rewrite->pagination_base . '/%d', $wp->request ); |
| 929 | else |
| 930 | $path = $wp->request . '/' . $wp_rewrite->pagination_base . '/%d'; |
| 931 | |
| 932 | // Slashes everywhere we need them |
| 933 | if ( 0 !== strpos( $path, '/' ) ) |
| 934 | $path = '/' . $path; |
| 935 | |
| 936 | $path = user_trailingslashit( $path ); |
| 937 | } else { |
| 938 | // Clean up raw $_REQUEST input |
| 939 | $path = array_map( 'sanitize_text_field', $_REQUEST ); |
| 940 | $path = array_filter( $path ); |
| 941 | |
| 942 | $path['paged'] = '%d'; |
| 943 | |
| 944 | $path = add_query_arg( $path, '/' ); |
| 945 | } |
| 946 | |
| 947 | return empty( $path ) ? false : $path; |
| 948 | } |
| 949 | |
| 950 | /** |
| 951 | * Return query string for current request, prefixed with '?'. |
| 952 | * |
| 953 | * @return string |
| 954 | */ |
| 955 | private function get_request_parameters() { |
| 956 | $uri = $_SERVER[ 'REQUEST_URI' ]; |
| 957 | $uri = preg_replace( '/^[^?]*(\?.*$)/', '$1', $uri, 1, $count ); |
| 958 | if ( $count != 1 ) |
| 959 | return ''; |
| 960 | return $uri; |
| 961 | } |
| 962 | |
| 963 | /** |
| 964 | * Provide IS with a list of the scripts and stylesheets already present on the page. |
| 965 | * Since posts may contain require additional assets that haven't been loaded, this data will be used to track the additional assets. |
| 966 | * |
| 967 | * @global $wp_scripts, $wp_styles |
| 968 | * @action wp_footer |
| 969 | * @return string |
| 970 | */ |
| 971 | function action_wp_footer() { |
| 972 | global $wp_scripts, $wp_styles; |
| 973 | |
| 974 | $scripts = is_a( $wp_scripts, 'WP_Scripts' ) ? $wp_scripts->done : array(); |
| 975 | /** |
| 976 | * Filter the list of scripts already present on the page. |
| 977 | * |
| 978 | * @module infinite-scroll |
| 979 | * |
| 980 | * @since 2.1.2 |
| 981 | * |
| 982 | * @param array $scripts Array of scripts present on the page. |
| 983 | */ |
| 984 | $scripts = apply_filters( 'infinite_scroll_existing_scripts', $scripts ); |
| 985 | |
| 986 | $styles = is_a( $wp_styles, 'WP_Styles' ) ? $wp_styles->done : array(); |
| 987 | /** |
| 988 | * Filter the list of styles already present on the page. |
| 989 | * |
| 990 | * @module infinite-scroll |
| 991 | * |
| 992 | * @since 2.1.2 |
| 993 | * |
| 994 | * @param array $styles Array of styles present on the page. |
| 995 | */ |
| 996 | $styles = apply_filters( 'infinite_scroll_existing_stylesheets', $styles ); |
| 997 | |
| 998 | ?><script type="text/javascript"> |
| 999 | jQuery.extend( infiniteScroll.settings.scripts, <?php echo json_encode( $scripts ); ?> ); |
| 1000 | jQuery.extend( infiniteScroll.settings.styles, <?php echo json_encode( $styles ); ?> ); |
| 1001 | </script><?php |
| 1002 | } |
| 1003 | |
| 1004 | /** |
| 1005 | * Identify additional scripts required by the latest set of IS posts and provide the necessary data to the IS response handler. |
| 1006 | * |
| 1007 | * @global $wp_scripts |
| 1008 | * @uses sanitize_text_field, add_query_arg |
| 1009 | * @filter infinite_scroll_results |
| 1010 | * @return array |
| 1011 | */ |
| 1012 | function filter_infinite_scroll_results( $results, $query_args, $wp_query ) { |
| 1013 | // Don't bother unless there are posts to display |
| 1014 | if ( 'success' != $results['type'] ) |
| 1015 | return $results; |
| 1016 | |
| 1017 | // Parse and sanitize the script handles already output |
| 1018 | $initial_scripts = isset( $_REQUEST['scripts'] ) && is_array( $_REQUEST['scripts'] ) ? array_map( 'sanitize_text_field', $_REQUEST['scripts'] ) : false; |
| 1019 | |
| 1020 | if ( is_array( $initial_scripts ) ) { |
| 1021 | global $wp_scripts; |
| 1022 | |
| 1023 | // Identify new scripts needed by the latest set of IS posts |
| 1024 | $new_scripts = array_diff( $wp_scripts->done, $initial_scripts ); |
| 1025 | |
| 1026 | // If new scripts are needed, extract relevant data from $wp_scripts |
| 1027 | if ( ! empty( $new_scripts ) ) { |
| 1028 | $results['scripts'] = array(); |
| 1029 | |
| 1030 | foreach ( $new_scripts as $handle ) { |
| 1031 | // Abort if somehow the handle doesn't correspond to a registered script |
| 1032 | if ( ! isset( $wp_scripts->registered[ $handle ] ) ) |
| 1033 | continue; |
| 1034 | |
| 1035 | // Provide basic script data |
| 1036 | $script_data = array( |
| 1037 | 'handle' => $handle, |
| 1038 | 'footer' => ( is_array( $wp_scripts->in_footer ) && in_array( $handle, $wp_scripts->in_footer ) ), |
| 1039 | 'extra_data' => $wp_scripts->print_extra_script( $handle, false ) |
| 1040 | ); |
| 1041 | |
| 1042 | // Base source |
| 1043 | $src = $wp_scripts->registered[ $handle ]->src; |
| 1044 | |
| 1045 | // Take base_url into account |
| 1046 | if ( strpos( $src, 'http' ) !== 0 ) |
| 1047 | $src = $wp_scripts->base_url . $src; |
| 1048 | |
| 1049 | // Version and additional arguments |
| 1050 | if ( null === $wp_scripts->registered[ $handle ]->ver ) |
| 1051 | $ver = ''; |
| 1052 | else |
| 1053 | $ver = $wp_scripts->registered[ $handle ]->ver ? $wp_scripts->registered[ $handle ]->ver : $wp_scripts->default_version; |
| 1054 | |
| 1055 | if ( isset( $wp_scripts->args[ $handle ] ) ) |
| 1056 | $ver = $ver ? $ver . '&' . $wp_scripts->args[$handle] : $wp_scripts->args[$handle]; |
| 1057 | |
| 1058 | // Full script source with version info |
| 1059 | $script_data['src'] = add_query_arg( 'ver', $ver, $src ); |
| 1060 | |
| 1061 | // Add script to data that will be returned to IS JS |
| 1062 | array_push( $results['scripts'], $script_data ); |
| 1063 | } |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | // Expose additional script data to filters, but only include in final `$results` array if needed. |
| 1068 | if ( ! isset( $results['scripts'] ) ) |
| 1069 | $results['scripts'] = array(); |
| 1070 | |
| 1071 | /** |
| 1072 | * Filter the additional scripts required by the latest set of IS posts. |
| 1073 | * |
| 1074 | * @module infinite-scroll |
| 1075 | * |
| 1076 | * @since 2.1.2 |
| 1077 | * |
| 1078 | * @param array $results['scripts'] Additional scripts required by the latest set of IS posts. |
| 1079 | * @param array|bool $initial_scripts Set of scripts loaded on each page. |
| 1080 | * @param array $results Array of Infinite Scroll results. |
| 1081 | * @param array $query_args Array of Query arguments. |
| 1082 | * @param WP_Query $wp_query WP Query. |
| 1083 | */ |
| 1084 | $results['scripts'] = apply_filters( |
| 1085 | 'infinite_scroll_additional_scripts', |
| 1086 | $results['scripts'], |
| 1087 | $initial_scripts, |
| 1088 | $results, |
| 1089 | $query_args, |
| 1090 | $wp_query |
| 1091 | ); |
| 1092 | |
| 1093 | if ( empty( $results['scripts'] ) ) |
| 1094 | unset( $results['scripts' ] ); |
| 1095 | |
| 1096 | // Parse and sanitize the style handles already output |
| 1097 | $initial_styles = isset( $_REQUEST['styles'] ) && is_array( $_REQUEST['styles'] ) ? array_map( 'sanitize_text_field', $_REQUEST['styles'] ) : false; |
| 1098 | |
| 1099 | if ( is_array( $initial_styles ) ) { |
| 1100 | global $wp_styles; |
| 1101 | |
| 1102 | // Identify new styles needed by the latest set of IS posts |
| 1103 | $new_styles = array_diff( $wp_styles->done, $initial_styles ); |
| 1104 | |
| 1105 | // If new styles are needed, extract relevant data from $wp_styles |
| 1106 | if ( ! empty( $new_styles ) ) { |
| 1107 | $results['styles'] = array(); |
| 1108 | |
| 1109 | foreach ( $new_styles as $handle ) { |
| 1110 | // Abort if somehow the handle doesn't correspond to a registered stylesheet |
| 1111 | if ( ! isset( $wp_styles->registered[ $handle ] ) ) |
| 1112 | continue; |
| 1113 | |
| 1114 | // Provide basic style data |
| 1115 | $style_data = array( |
| 1116 | 'handle' => $handle, |
| 1117 | 'media' => 'all' |
| 1118 | ); |
| 1119 | |
| 1120 | // Base source |
| 1121 | $src = $wp_styles->registered[ $handle ]->src; |
| 1122 | |
| 1123 | // Take base_url into account |
| 1124 | if ( strpos( $src, 'http' ) !== 0 ) |
| 1125 | $src = $wp_styles->base_url . $src; |
| 1126 | |
| 1127 | // Version and additional arguments |
| 1128 | if ( null === $wp_styles->registered[ $handle ]->ver ) |
| 1129 | $ver = ''; |
| 1130 | else |
| 1131 | $ver = $wp_styles->registered[ $handle ]->ver ? $wp_styles->registered[ $handle ]->ver : $wp_styles->default_version; |
| 1132 | |
| 1133 | if ( isset($wp_styles->args[ $handle ] ) ) |
| 1134 | $ver = $ver ? $ver . '&' . $wp_styles->args[$handle] : $wp_styles->args[$handle]; |
| 1135 | |
| 1136 | // Full stylesheet source with version info |
| 1137 | $style_data['src'] = add_query_arg( 'ver', $ver, $src ); |
| 1138 | |
| 1139 | // Parse stylesheet's conditional comments if present, converting to logic executable in JS |
| 1140 | if ( isset( $wp_styles->registered[ $handle ]->extra['conditional'] ) && $wp_styles->registered[ $handle ]->extra['conditional'] ) { |
| 1141 | // First, convert conditional comment operators to standard logical operators. %ver is replaced in JS with the IE version |
| 1142 | $style_data['conditional'] = str_replace( array( |
| 1143 | 'lte', |
| 1144 | 'lt', |
| 1145 | 'gte', |
| 1146 | 'gt' |
| 1147 | ), array( |
| 1148 | '%ver <=', |
| 1149 | '%ver <', |
| 1150 | '%ver >=', |
| 1151 | '%ver >', |
| 1152 | ), $wp_styles->registered[ $handle ]->extra['conditional'] ); |
| 1153 | |
| 1154 | // Next, replace any !IE checks. These shouldn't be present since WP's conditional stylesheet implementation doesn't support them, but someone could be _doing_it_wrong(). |
| 1155 | $style_data['conditional'] = preg_replace( '#!\s*IE(\s*\d+){0}#i', '1==2', $style_data['conditional'] ); |
| 1156 | |
| 1157 | // Lastly, remove the IE strings |
| 1158 | $style_data['conditional'] = str_replace( 'IE', '', $style_data['conditional'] ); |
| 1159 | } |
| 1160 | |
| 1161 | // Parse requested media context for stylesheet |
| 1162 | if ( isset( $wp_styles->registered[ $handle ]->args ) ) |
| 1163 | $style_data['media'] = esc_attr( $wp_styles->registered[ $handle ]->args ); |
| 1164 | |
| 1165 | // Add stylesheet to data that will be returned to IS JS |
| 1166 | array_push( $results['styles'], $style_data ); |
| 1167 | } |
| 1168 | } |
| 1169 | } |
| 1170 | |
| 1171 | // Expose additional stylesheet data to filters, but only include in final `$results` array if needed. |
| 1172 | if ( ! isset( $results['styles'] ) ) |
| 1173 | $results['styles'] = array(); |
| 1174 | |
| 1175 | /** |
| 1176 | * Filter the additional styles required by the latest set of IS posts. |
| 1177 | * |
| 1178 | * @module infinite-scroll |
| 1179 | * |
| 1180 | * @since 2.1.2 |
| 1181 | * |
| 1182 | * @param array $results['styles'] Additional styles required by the latest set of IS posts. |
| 1183 | * @param array|bool $initial_styles Set of styles loaded on each page. |
| 1184 | * @param array $results Array of Infinite Scroll results. |
| 1185 | * @param array $query_args Array of Query arguments. |
| 1186 | * @param WP_Query $wp_query WP Query. |
| 1187 | */ |
| 1188 | $results['styles'] = apply_filters( |
| 1189 | 'infinite_scroll_additional_stylesheets', |
| 1190 | $results['styles'], |
| 1191 | $initial_styles, |
| 1192 | $results, |
| 1193 | $query_args, |
| 1194 | $wp_query |
| 1195 | ); |
| 1196 | |
| 1197 | if ( empty( $results['styles'] ) ) |
| 1198 | unset( $results['styles' ] ); |
| 1199 | |
| 1200 | // Lastly, return the IS results array |
| 1201 | return $results; |
| 1202 | } |
| 1203 | |
| 1204 | /** |
| 1205 | * Runs the query and returns the results via JSON. |
| 1206 | * Triggered by an AJAX request. |
| 1207 | * |
| 1208 | * @global $wp_query |
| 1209 | * @global $wp_the_query |
| 1210 | * @uses current_theme_supports, get_option, self::wp_query, current_user_can, apply_filters, self::get_settings, add_filter, WP_Query, remove_filter, have_posts, wp_head, do_action, add_action, this::render, this::has_wrapper, esc_attr, wp_footer, sharing_register_post_for_share_counts, get_the_id |
| 1211 | * @return string or null |
| 1212 | */ |
| 1213 | function query() { |
| 1214 | global $wp_customize; |
| 1215 | global $wp_version; |
| 1216 | if ( ! isset( $_REQUEST['page'] ) || ! current_theme_supports( 'infinite-scroll' ) ) |
| 1217 | die; |
| 1218 | |
| 1219 | $page = (int) $_REQUEST['page']; |
| 1220 | |
| 1221 | // Sanitize and set $previousday. Expected format: dd.mm.yy |
| 1222 | if ( preg_match( '/^\d{2}\.\d{2}\.\d{2}$/', $_REQUEST['currentday'] ) ) { |
| 1223 | global $previousday; |
| 1224 | $previousday = $_REQUEST['currentday']; |
| 1225 | } |
| 1226 | |
| 1227 | $post_status = array( 'publish' ); |
| 1228 | if ( current_user_can( 'read_private_posts' ) ) |
| 1229 | array_push( $post_status, 'private' ); |
| 1230 | |
| 1231 | $order = in_array( $_REQUEST['order'], array( 'ASC', 'DESC' ) ) ? $_REQUEST['order'] : 'DESC'; |
| 1232 | |
| 1233 | $query_args = array_merge( self::wp_query()->query_vars, array( |
| 1234 | 'paged' => $page, |
| 1235 | 'post_status' => $post_status, |
| 1236 | 'posts_per_page' => self::posts_per_page(), |
| 1237 | 'order' => $order |
| 1238 | ) ); |
| 1239 | |
| 1240 | // 4.0 ?s= compatibility, see https://core.trac.wordpress.org/ticket/11330#comment:50 |
| 1241 | if ( empty( $query_args['s'] ) && ! isset( self::wp_query()->query['s'] ) ) { |
| 1242 | unset( $query_args['s'] ); |
| 1243 | } |
| 1244 | |
| 1245 | // By default, don't query for a specific page of a paged post object. |
| 1246 | // This argument can come from merging self::wp_query() into $query_args above. |
| 1247 | // Since IS is only used on archives, we should always display the first page of any paged content. |
| 1248 | unset( $query_args['page'] ); |
| 1249 | |
| 1250 | /** |
| 1251 | * Filter the array of main query arguments. |
| 1252 | * |
| 1253 | * @module infinite-scroll |
| 1254 | * |
| 1255 | * @since 2.0.1 |
| 1256 | * |
| 1257 | * @param array $query_args Array of Query arguments. |
| 1258 | */ |
| 1259 | $query_args = apply_filters( 'infinite_scroll_query_args', $query_args ); |
| 1260 | |
| 1261 | add_filter( 'posts_where', array( $this, 'query_time_filter' ), 10, 2 ); |
| 1262 | |
| 1263 | $GLOBALS['wp_the_query'] = $GLOBALS['wp_query'] = $infinite_scroll_query = new WP_Query(); |
| 1264 | |
| 1265 | $infinite_scroll_query->query( $query_args ); |
| 1266 | |
| 1267 | remove_filter( 'posts_where', array( $this, 'query_time_filter' ), 10, 2 ); |
| 1268 | |
| 1269 | $results = array(); |
| 1270 | |
| 1271 | if ( have_posts() ) { |
| 1272 | // Fire wp_head to ensure that all necessary scripts are enqueued. Output isn't used, but scripts are extracted in self::action_wp_footer. |
| 1273 | ob_start(); |
| 1274 | wp_head(); |
| 1275 | while ( ob_get_length() ) { |
| 1276 | ob_end_clean(); |
| 1277 | } |
| 1278 | |
| 1279 | $results['type'] = 'success'; |
| 1280 | |
| 1281 | /** |
| 1282 | * Gather renderer callbacks. These will be called in order and allow multiple callbacks to be queued. Once content is found, no futher callbacks will run. |
| 1283 | * |
| 1284 | * @module infinite-scroll |
| 1285 | * |
| 1286 | * @since 6.0.0 |
| 1287 | */ |
| 1288 | $callbacks = apply_filters( 'infinite_scroll_render_callbacks', array( |
| 1289 | self::get_settings()->render, // This is the setting callback e.g. from add theme support. |
| 1290 | ) ); |
| 1291 | |
| 1292 | // Append fallback callback. That rhymes. |
| 1293 | $callbacks[] = array( $this, 'render' ); |
| 1294 | |
| 1295 | foreach ( $callbacks as $callback ) { |
| 1296 | if ( false !== $callback && is_callable( $callback ) ) { |
| 1297 | rewind_posts(); |
| 1298 | ob_start(); |
| 1299 | add_action( 'infinite_scroll_render', $callback ); |
| 1300 | |
| 1301 | /** |
| 1302 | * Fires when rendering Infinite Scroll posts. |
| 1303 | * |
| 1304 | * @module infinite-scroll |
| 1305 | * |
| 1306 | * @since 2.0.0 |
| 1307 | */ |
| 1308 | do_action( 'infinite_scroll_render' ); |
| 1309 | |
| 1310 | $results['html'] = ob_get_clean(); |
| 1311 | remove_action( 'infinite_scroll_render', $callback ); |
| 1312 | } |
| 1313 | if ( ! empty( $results['html'] ) ) { |
| 1314 | break; |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | // If primary and fallback rendering methods fail, prevent further IS rendering attempts. Otherwise, wrap the output if requested. |
| 1319 | if ( empty( $results['html'] ) ) { |
| 1320 | unset( $results['html'] ); |
| 1321 | /** |
| 1322 | * Fires when Infinite Scoll doesn't render any posts. |
| 1323 | * |
| 1324 | * @module infinite-scroll |
| 1325 | * |
| 1326 | * @since 2.0.0 |
| 1327 | */ |
| 1328 | do_action( 'infinite_scroll_empty' ); |
| 1329 | $results['type'] = 'empty'; |
| 1330 | } elseif ( $this->has_wrapper() ) { |
| 1331 | $wrapper_classes = is_string( self::get_settings()->wrapper ) ? self::get_settings()->wrapper : 'infinite-wrap'; |
| 1332 | $wrapper_classes .= ' infinite-view-' . $page; |
| 1333 | $wrapper_classes = trim( $wrapper_classes ); |
| 1334 | |
| 1335 | $results['html'] = '<div class="' . esc_attr( $wrapper_classes ) . '" id="infinite-view-' . $page . '" data-page-num="' . $page . '">' . $results['html'] . '</div>'; |
| 1336 | } |
| 1337 | |
| 1338 | // Fire wp_footer to ensure that all necessary scripts are enqueued. Output isn't used, but scripts are extracted in self::action_wp_footer. |
| 1339 | ob_start(); |
| 1340 | wp_footer(); |
| 1341 | while ( ob_get_length() ) { |
| 1342 | ob_end_clean(); |
| 1343 | } |
| 1344 | |
| 1345 | if ( 'success' == $results['type'] ) { |
| 1346 | global $currentday; |
| 1347 | $results['lastbatch'] = self::is_last_batch(); |
| 1348 | $results['currentday'] = $currentday; |
| 1349 | } |
| 1350 | |
| 1351 | // Loop through posts to capture sharing data for new posts loaded via Infinite Scroll |
| 1352 | if ( 'success' == $results['type'] && function_exists( 'sharing_register_post_for_share_counts' ) ) { |
| 1353 | global $jetpack_sharing_counts; |
| 1354 | |
| 1355 | while( have_posts() ) { |
| 1356 | the_post(); |
| 1357 | |
| 1358 | sharing_register_post_for_share_counts( get_the_ID() ); |
| 1359 | } |
| 1360 | |
| 1361 | $results['postflair'] = array_flip( $jetpack_sharing_counts ); |
| 1362 | } |
| 1363 | } else { |
| 1364 | /** This action is already documented in modules/infinite-scroll/infinity.php */ |
| 1365 | do_action( 'infinite_scroll_empty' ); |
| 1366 | $results['type'] = 'empty'; |
| 1367 | } |
| 1368 | |
| 1369 | // This should be removed when WordPress 4.8 is released. |
| 1370 | if ( version_compare( $wp_version, '4.7', '<' ) && is_customize_preview() ) { |
| 1371 | $wp_customize->remove_preview_signature(); |
| 1372 | } |
| 1373 | |
| 1374 | wp_send_json( |
| 1375 | /** |
| 1376 | * Filter the Infinite Scroll results. |
| 1377 | * |
| 1378 | * @module infinite-scroll |
| 1379 | * |
| 1380 | * @since 2.0.0 |
| 1381 | * |
| 1382 | * @param array $results Array of Infinite Scroll results. |
| 1383 | * @param array $query_args Array of main query arguments. |
| 1384 | * @param WP_Query $wp_query WP Query. |
| 1385 | */ |
| 1386 | apply_filters( 'infinite_scroll_results', $results, $query_args, self::wp_query() ) |
| 1387 | ); |
| 1388 | } |
| 1389 | |
| 1390 | /** |
| 1391 | * Update the $allowed_vars array with the standard WP public and private |
| 1392 | * query vars, as well as taxonomy vars |
| 1393 | * |
| 1394 | * @global $wp |
| 1395 | * @param array $allowed_vars |
| 1396 | * @filter infinite_scroll_allowed_vars |
| 1397 | * @return array |
| 1398 | */ |
| 1399 | function allowed_query_vars( $allowed_vars ) { |
| 1400 | global $wp; |
| 1401 | |
| 1402 | $allowed_vars += $wp->public_query_vars; |
| 1403 | $allowed_vars += $wp->private_query_vars; |
| 1404 | $allowed_vars += $this->get_taxonomy_vars(); |
| 1405 | |
| 1406 | foreach ( array_keys( $allowed_vars, 'paged' ) as $key ) { |
| 1407 | unset( $allowed_vars[ $key ] ); |
| 1408 | } |
| 1409 | |
| 1410 | return array_unique( $allowed_vars ); |
| 1411 | } |
| 1412 | |
| 1413 | /** |
| 1414 | * Returns an array of stock and custom taxonomy query vars |
| 1415 | * |
| 1416 | * @global $wp_taxonomies |
| 1417 | * @return array |
| 1418 | */ |
| 1419 | function get_taxonomy_vars() { |
| 1420 | global $wp_taxonomies; |
| 1421 | |
| 1422 | $taxonomy_vars = array(); |
| 1423 | foreach ( $wp_taxonomies as $taxonomy => $t ) { |
| 1424 | if ( $t->query_var ) |
| 1425 | $taxonomy_vars[] = $t->query_var; |
| 1426 | } |
| 1427 | |
| 1428 | // still needed? |
| 1429 | $taxonomy_vars[] = 'tag_id'; |
| 1430 | |
| 1431 | return $taxonomy_vars; |
| 1432 | } |
| 1433 | |
| 1434 | /** |
| 1435 | * Update the $query_args array with the parameters provided via AJAX/GET. |
| 1436 | * |
| 1437 | * @param array $query_args |
| 1438 | * @filter infinite_scroll_query_args |
| 1439 | * @return array |
| 1440 | */ |
| 1441 | function inject_query_args( $query_args ) { |
| 1442 | /** |
| 1443 | * Filter the array of allowed Infinite Scroll query arguments. |
| 1444 | * |
| 1445 | * @module infinite-scroll |
| 1446 | * |
| 1447 | * @since 2.6.0 |
| 1448 | * |
| 1449 | * @param array $args Array of allowed Infinite Scroll query arguments. |
| 1450 | * @param array $query_args Array of query arguments. |
| 1451 | */ |
| 1452 | $allowed_vars = apply_filters( 'infinite_scroll_allowed_vars', array(), $query_args ); |
| 1453 | |
| 1454 | $query_args = array_merge( $query_args, array( |
| 1455 | 'suppress_filters' => false, |
| 1456 | ) ); |
| 1457 | |
| 1458 | if ( is_array( $_REQUEST[ 'query_args' ] ) ) { |
| 1459 | foreach ( $_REQUEST[ 'query_args' ] as $var => $value ) { |
| 1460 | if ( in_array( $var, $allowed_vars ) && ! empty( $value ) ) |
| 1461 | $query_args[ $var ] = $value; |
| 1462 | } |
| 1463 | } |
| 1464 | |
| 1465 | return $query_args; |
| 1466 | } |
| 1467 | |
| 1468 | /** |
| 1469 | * Rendering fallback used when themes don't specify their own handler. |
| 1470 | * |
| 1471 | * @uses have_posts, the_post, get_template_part, get_post_format |
| 1472 | * @action infinite_scroll_render |
| 1473 | * @return string |
| 1474 | */ |
| 1475 | function render() { |
| 1476 | while ( have_posts() ) { |
| 1477 | the_post(); |
| 1478 | |
| 1479 | get_template_part( 'content', get_post_format() ); |
| 1480 | } |
| 1481 | } |
| 1482 | |
| 1483 | /** |
| 1484 | * Allow plugins to filter what archives Infinite Scroll supports |
| 1485 | * |
| 1486 | * @uses current_theme_supports, is_home, is_archive, apply_filters, self::get_settings |
| 1487 | * @return bool |
| 1488 | */ |
| 1489 | public static function archive_supports_infinity() { |
| 1490 | $supported = current_theme_supports( 'infinite-scroll' ) && ( is_home() || is_archive() || is_search() ); |
| 1491 | |
| 1492 | // Disable when previewing a non-active theme in the customizer |
| 1493 | if ( is_customize_preview() && ! $GLOBALS['wp_customize']->is_theme_active() ) { |
| 1494 | return false; |
| 1495 | } |
| 1496 | |
| 1497 | /** |
| 1498 | * Allow plugins to filter what archives Infinite Scroll supports. |
| 1499 | * |
| 1500 | * @module infinite-scroll |
| 1501 | * |
| 1502 | * @since 2.0.0 |
| 1503 | * |
| 1504 | * @param bool $supported Does the Archive page support Infinite Scroll. |
| 1505 | * @param object self::get_settings() IS settings provided by theme. |
| 1506 | */ |
| 1507 | return (bool) apply_filters( 'infinite_scroll_archive_supported', $supported, self::get_settings() ); |
| 1508 | } |
| 1509 | |
| 1510 | /** |
| 1511 | * The Infinite Blog Footer |
| 1512 | * |
| 1513 | * @uses self::get_settings, self::archive_supports_infinity, self::default_footer |
| 1514 | * @return string or null |
| 1515 | */ |
| 1516 | function footer() { |
| 1517 | // Bail if theme requested footer not show |
| 1518 | if ( false == self::get_settings()->footer ) |
| 1519 | return; |
| 1520 | |
| 1521 | // We only need the new footer for the 'scroll' type |
| 1522 | if ( 'scroll' != self::get_settings()->type || ! self::archive_supports_infinity() ) |
| 1523 | return; |
| 1524 | |
| 1525 | if ( self::is_last_batch() ) { |
| 1526 | return; |
| 1527 | } |
| 1528 | |
| 1529 | // Display a footer, either user-specified or a default |
| 1530 | if ( false !== self::get_settings()->footer_callback && is_callable( self::get_settings()->footer_callback ) ) |
| 1531 | call_user_func( self::get_settings()->footer_callback, self::get_settings() ); |
| 1532 | else |
| 1533 | self::default_footer(); |
| 1534 | } |
| 1535 | |
| 1536 | /** |
| 1537 | * Render default IS footer |
| 1538 | * |
| 1539 | * @uses __, wp_get_theme, apply_filters, home_url, esc_attr, get_bloginfo, bloginfo |
| 1540 | * @return string |
| 1541 | */ |
| 1542 | private function default_footer() { |
| 1543 | $credits = sprintf( |
| 1544 | '<a href="https://wordpress.org/" rel="noopener noreferrer" target="_blank" rel="generator">%1$s</a> ', |
| 1545 | __( 'Proudly powered by WordPress', 'jetpack' ) |
| 1546 | ); |
| 1547 | $credits .= sprintf( |
| 1548 | /* translators: %1$s is the name of a theme */ |
| 1549 | __( 'Theme: %1$s.', 'jetpack' ), |
| 1550 | wp_get_theme()->Name |
| 1551 | ); |
| 1552 | /** |
| 1553 | * Filter Infinite Scroll's credit text. |
| 1554 | * |
| 1555 | * @module infinite-scroll |
| 1556 | * |
| 1557 | * @since 2.0.0 |
| 1558 | * |
| 1559 | * @param string $credits Infinite Scroll credits. |
| 1560 | */ |
| 1561 | $credits = apply_filters( 'infinite_scroll_credit', $credits ); |
| 1562 | |
| 1563 | ?> |
| 1564 | <div id="infinite-footer"> |
| 1565 | <div class="container"> |
| 1566 | <div class="blog-info"> |
| 1567 | <a id="infinity-blog-title" href="<?php echo home_url( '/' ); ?>" rel="home"> |
| 1568 | <?php bloginfo( 'name' ); ?> |
| 1569 | </a> |
| 1570 | </div> |
| 1571 | <div class="blog-credits"> |
| 1572 | <?php echo $credits; ?> |
| 1573 | </div> |
| 1574 | </div> |
| 1575 | </div><!-- #infinite-footer --> |
| 1576 | <?php |
| 1577 | } |
| 1578 | |
| 1579 | /** |
| 1580 | * Ensure that IS doesn't interfere with Grunion by stripping IS query arguments from the Grunion redirect URL. |
| 1581 | * When arguments are present, Grunion redirects to the IS AJAX endpoint. |
| 1582 | * |
| 1583 | * @param string $url |
| 1584 | * @uses remove_query_arg |
| 1585 | * @filter grunion_contact_form_redirect_url |
| 1586 | * @return string |
| 1587 | */ |
| 1588 | public function filter_grunion_redirect_url( $url ) { |
| 1589 | // Remove IS query args, if present |
| 1590 | if ( false !== strpos( $url, 'infinity=scrolling' ) ) { |
| 1591 | $url = remove_query_arg( array( |
| 1592 | 'infinity', |
| 1593 | 'action', |
| 1594 | 'page', |
| 1595 | 'order', |
| 1596 | 'scripts', |
| 1597 | 'styles' |
| 1598 | ), $url ); |
| 1599 | } |
| 1600 | |
| 1601 | return $url; |
| 1602 | } |
| 1603 | }; |
| 1604 | |
| 1605 | /** |
| 1606 | * Initialize The_Neverending_Home_Page |
| 1607 | */ |
| 1608 | function the_neverending_home_page_init() { |
| 1609 | if ( ! current_theme_supports( 'infinite-scroll' ) ) |
| 1610 | return; |
| 1611 | |
| 1612 | new The_Neverending_Home_Page; |
| 1613 | } |
| 1614 | add_action( 'init', 'the_neverending_home_page_init', 20 ); |
| 1615 | |
| 1616 | /** |
| 1617 | * Check whether the current theme is infinite-scroll aware. |
| 1618 | * If so, include the files which add theme support. |
| 1619 | */ |
| 1620 | function the_neverending_home_page_theme_support() { |
| 1621 | if ( |
| 1622 | defined( 'IS_WPCOM' ) && IS_WPCOM && |
| 1623 | defined( 'REST_API_REQUEST' ) && REST_API_REQUEST && |
| 1624 | ! doing_action( 'restapi_theme_after_setup_theme' ) |
| 1625 | ) { |
| 1626 | // Don't source theme compat files until we're in the site's context |
| 1627 | return; |
| 1628 | } |
| 1629 | $theme_name = get_stylesheet(); |
| 1630 | |
| 1631 | /** |
| 1632 | * Filter the path to the Infinite Scroll compatibility file. |
| 1633 | * |
| 1634 | * @module infinite-scroll |
| 1635 | * |
| 1636 | * @since 2.0.0 |
| 1637 | * |
| 1638 | * @param string $str IS compatibility file path. |
| 1639 | * @param string $theme_name Theme name. |
| 1640 | */ |
| 1641 | $customization_file = apply_filters( 'infinite_scroll_customization_file', dirname( __FILE__ ) . "/themes/{$theme_name}.php", $theme_name ); |
| 1642 | |
| 1643 | if ( is_readable( $customization_file ) ) |
| 1644 | require_once( $customization_file ); |
| 1645 | } |
| 1646 | add_action( 'after_setup_theme', 'the_neverending_home_page_theme_support', 5 ); |
| 1647 | |
| 1648 | /** |
| 1649 | * Early accommodation of the Infinite Scroll AJAX request |
| 1650 | */ |
| 1651 | if ( The_Neverending_Home_Page::got_infinity() ) { |
| 1652 | /** |
| 1653 | * If we're sure this is an AJAX request (i.e. the HTTP_X_REQUESTED_WITH header says so), |
| 1654 | * indicate it as early as possible for actions like init |
| 1655 | */ |
| 1656 | if ( ! defined( 'DOING_AJAX' ) && |
| 1657 | isset( $_SERVER['HTTP_X_REQUESTED_WITH'] ) && |
| 1658 | strtoupper( $_SERVER['HTTP_X_REQUESTED_WITH'] ) == 'XMLHTTPREQUEST' |
| 1659 | ) { |
| 1660 | define( 'DOING_AJAX', true ); |
| 1661 | } |
| 1662 | |
| 1663 | // Don't load the admin bar when doing the AJAX response. |
| 1664 | show_admin_bar( false ); |
| 1665 | } |
| 1666 |