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jetpack_vendor/automattic/jetpack-sync/src/modules/class-options.php
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| 1 | +<?php | |
| 2 | +/** | |
| 3 | + * Options sync module. | |
| 4 | + * | |
| 5 | + * @package automattic/jetpack-sync | |
| 6 | + */ | |
| 7 | + | |
| 8 | +namespace Automattic\Jetpack\Sync\Modules; | |
| 9 | + | |
| 10 | +use Automattic\Jetpack\Sync\Defaults; | |
| 11 | +use Automattic\Jetpack\Sync\Settings; | |
| 12 | + | |
| 13 | +if ( ! defined( 'ABSPATH' ) ) { | |
| 14 | + exit( 0 ); | |
| 15 | +} | |
| 16 | + | |
| 17 | +/** | |
| 18 | + * Class to handle sync for options. | |
| 19 | + */ | |
| 20 | +class Options extends Module { | |
| 21 | + /** | |
| 22 | + * Whitelist for options we want to sync. | |
| 23 | + * | |
| 24 | + * @access private | |
| 25 | + * | |
| 26 | + * @var array | |
| 27 | + */ | |
| 28 | + private $options_whitelist; | |
| 29 | + | |
| 30 | + /** | |
| 31 | + * Contentless options we want to sync. | |
| 32 | + * | |
| 33 | + * @access private | |
| 34 | + * | |
| 35 | + * @var array | |
| 36 | + */ | |
| 37 | + private $options_contentless; | |
| 38 | + | |
| 39 | + /** | |
| 40 | + * Sync module name. | |
| 41 | + * | |
| 42 | + * @access public | |
| 43 | + * | |
| 44 | + * @return string | |
| 45 | + */ | |
| 46 | + public function name() { | |
| 47 | + return 'options'; | |
| 48 | + } | |
| 49 | + | |
| 50 | + /** | |
| 51 | + * Initialize options action listeners. | |
| 52 | + * | |
| 53 | + * @access public | |
| 54 | + * | |
| 55 | + * @param callable $callable Action handler callable. | |
| 56 | + */ | |
| 57 | + public function init_listeners( $callable ) { | |
| 58 | + // Options. | |
| 59 | + add_action( 'added_option', $callable, 10, 2 ); | |
| 60 | + add_action( 'updated_option', $callable, 10, 3 ); | |
| 61 | + add_action( 'deleted_option', $callable, 10, 1 ); | |
| 62 | + | |
| 63 | + // Sync Core Icon: Detect changes in Core's Site Icon and make it syncable. | |
| 64 | + add_action( 'add_option_site_icon', array( $this, 'jetpack_sync_core_icon' ) ); | |
| 65 | + add_action( 'update_option_site_icon', array( $this, 'jetpack_sync_core_icon' ) ); | |
| 66 | + add_action( 'delete_option_site_icon', array( $this, 'jetpack_sync_core_icon' ) ); | |
| 67 | + | |
| 68 | + // Handle deprecated options. | |
| 69 | + add_filter( 'jetpack_options_whitelist', array( $this, 'add_deprecated_options' ) ); | |
| 70 | + | |
| 71 | + $whitelist_option_handler = array( $this, 'whitelist_options' ); | |
| 72 | + add_filter( 'jetpack_sync_before_enqueue_deleted_option', $whitelist_option_handler ); | |
| 73 | + add_filter( 'jetpack_sync_before_enqueue_added_option', $whitelist_option_handler ); | |
| 74 | + add_filter( 'jetpack_sync_before_enqueue_updated_option', $whitelist_option_handler ); | |
| 75 | + } | |
| 76 | + | |
| 77 | + /** | |
| 78 | + * Initialize options action listeners for full sync. | |
| 79 | + * | |
| 80 | + * @access public | |
| 81 | + * | |
| 82 | + * @param callable $callable Action handler callable. | |
| 83 | + */ | |
| 84 | + public function init_full_sync_listeners( $callable ) { | |
| 85 | + add_action( 'jetpack_full_sync_options', $callable ); | |
| 86 | + } | |
| 87 | + | |
| 88 | + /** | |
| 89 | + * Initialize the module in the sender. | |
| 90 | + * | |
| 91 | + * @access public | |
| 92 | + */ | |
| 93 | + public function init_before_send() { | |
| 94 | + // Full sync. | |
| 95 | + add_filter( 'jetpack_sync_before_send_jetpack_full_sync_options', array( $this, 'expand_options' ) ); | |
| 96 | + } | |
| 97 | + | |
| 98 | + /** | |
| 99 | + * Set module defaults. | |
| 100 | + * Define the options whitelist and contentless options. | |
| 101 | + * | |
| 102 | + * @access public | |
| 103 | + */ | |
| 104 | + public function set_defaults() { | |
| 105 | + $this->update_options_whitelist(); | |
| 106 | + $this->update_options_contentless(); | |
| 107 | + } | |
| 108 | + | |
| 109 | + /** | |
| 110 | + * Set module defaults at a later time. | |
| 111 | + * | |
| 112 | + * @access public | |
| 113 | + */ | |
| 114 | + public function set_late_default() { | |
| 115 | + /** This filter is already documented in json-endpoints/jetpack/class.wpcom-json-api-get-option-endpoint.php */ | |
| 116 | + $late_options = apply_filters( 'jetpack_options_whitelist', array() ); | |
| 117 | + $late_options = apply_filters( 'jetpack_sync_options_whitelist', $late_options ); | |
| 118 | + if ( ! empty( $late_options ) && is_array( $late_options ) ) { | |
| 119 | + $this->options_whitelist = array_merge( $this->options_whitelist, $late_options ); | |
| 120 | + } | |
| 121 | + } | |
| 122 | + | |
| 123 | + /** | |
| 124 | + * Add old deprecated options to the list of options to keep in sync. | |
| 125 | + * | |
| 126 | + * @since 1.14.0 | |
| 127 | + * | |
| 128 | + * @access public | |
| 129 | + * | |
| 130 | + * @param array $options The default list of site options. | |
| 131 | + */ | |
| 132 | + public function add_deprecated_options( $options ) { | |
| 133 | + global $wp_version; | |
| 134 | + | |
| 135 | + $deprecated_options = array( | |
| 136 | + 'blacklist_keys' => '5.5-alpha', // Replaced by disallowed_keys. | |
| 137 | + 'comment_whitelist' => '5.5-alpha', // Replaced by comment_previously_approved. | |
| 138 | + ); | |
| 139 | + | |
| 140 | + foreach ( $deprecated_options as $option => $version ) { | |
| 141 | + if ( version_compare( $wp_version, $version, '<=' ) ) { | |
| 142 | + $options[] = $option; | |
| 143 | + } | |
| 144 | + } | |
| 145 | + | |
| 146 | + return $options; | |
| 147 | + } | |
| 148 | + | |
| 149 | + /** | |
| 150 | + * Enqueue the options actions for full sync. | |
| 151 | + * | |
| 152 | + * @access public | |
| 153 | + * | |
| 154 | + * @param array $config Full sync configuration for this sync module. | |
| 155 | + * @param int $max_items_to_enqueue Maximum number of items to enqueue. | |
| 156 | + * @param boolean $state True if full sync has finished enqueueing this module, false otherwise. | |
| 157 | + * @return array Number of actions enqueued, and next module state. | |
| 158 | + */ | |
| 159 | + public function enqueue_full_sync_actions( $config, $max_items_to_enqueue, $state ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | |
| 160 | + /** | |
| 161 | + * Tells the client to sync all options to the server | |
| 162 | + * | |
| 163 | + * @since 1.6.3 | |
| 164 | + * @since-jetpack 4.2.0 | |
| 165 | + * | |
| 166 | + * @param boolean Whether to expand options (should always be true) | |
| 167 | + */ | |
| 168 | + do_action( 'jetpack_full_sync_options', true ); | |
| 169 | + | |
| 170 | + // The number of actions enqueued, and next module state (true == done). | |
| 171 | + return array( 1, true ); | |
| 172 | + } | |
| 173 | + | |
| 174 | + /** | |
| 175 | + * Send the options actions for full sync. | |
| 176 | + * | |
| 177 | + * @access public | |
| 178 | + * | |
| 179 | + * @param array $config Full sync configuration for this sync module. | |
| 180 | + * @param array $status This module Full Sync status. | |
| 181 | + * @param int $send_until The timestamp until the current request can send. | |
| 182 | + * @param int $started The timestamp when the full sync started. | |
| 183 | + * | |
| 184 | + * @return array This module Full Sync status. | |
| 185 | + */ | |
| 186 | + public function send_full_sync_actions( $config, $status, $send_until, $started ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | |
| 187 | + // we call this instead of do_action when sending immediately. | |
| 188 | + $result = $this->send_action( 'jetpack_full_sync_options', array( true ) ); | |
| 189 | + | |
| 190 | + if ( is_wp_error( $result ) ) { | |
| 191 | + $status['error'] = true; | |
| 192 | + return $status; | |
| 193 | + } | |
| 194 | + $status['finished'] = true; | |
| 195 | + $status['sent'] = $status['total']; | |
| 196 | + return $status; | |
| 197 | + } | |
| 198 | + | |
| 199 | + /** | |
| 200 | + * Retrieve an estimated number of actions that will be enqueued. | |
| 201 | + * | |
| 202 | + * @access public | |
| 203 | + * | |
| 204 | + * @param array $config Full sync configuration for this sync module. | |
| 205 | + * @return int Number of items yet to be enqueued. | |
| 206 | + */ | |
| 207 | + public function estimate_full_sync_actions( $config ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | |
| 208 | + return 1; | |
| 209 | + } | |
| 210 | + | |
| 211 | + /** | |
| 212 | + * Retrieve the actions that will be sent for this module during a full sync. | |
| 213 | + * | |
| 214 | + * @access public | |
| 215 | + * | |
| 216 | + * @return array Full sync actions of this module. | |
| 217 | + */ | |
| 218 | + public function get_full_sync_actions() { | |
| 219 | + return array( 'jetpack_full_sync_options' ); | |
| 220 | + } | |
| 221 | + | |
| 222 | + /** | |
| 223 | + * Retrieve all options as per the current options whitelist. | |
| 224 | + * Public so that we don't have to store so much data all the options twice. | |
| 225 | + * | |
| 226 | + * @access public | |
| 227 | + * | |
| 228 | + * @return array All options. | |
| 229 | + */ | |
| 230 | + public function get_all_options() { | |
| 231 | + $options = array(); | |
| 232 | + $random_string = wp_generate_password(); | |
| 233 | + foreach ( $this->options_whitelist as $option ) { | |
| 234 | + if ( str_starts_with( $option, Settings::SETTINGS_OPTION_PREFIX ) ) { | |
| 235 | + $option_value = Settings::get_setting( str_replace( Settings::SETTINGS_OPTION_PREFIX, '', $option ) ); | |
| 236 | + $options[ $option ] = $option_value; | |
| 237 | + } else { | |
| 238 | + $option_value = get_option( $option, $random_string ); | |
| 239 | + if ( $option_value !== $random_string ) { | |
| 240 | + $options[ $option ] = $option_value; | |
| 241 | + } | |
| 242 | + } | |
| 243 | + } | |
| 244 | + | |
| 245 | + // Add theme mods. | |
| 246 | + $theme_mods_option = 'theme_mods_' . get_option( 'stylesheet' ); | |
| 247 | + $theme_mods_value = get_option( $theme_mods_option, $random_string ); | |
| 248 | + if ( $theme_mods_value === $random_string ) { | |
| 249 | + return $options; | |
| 250 | + } | |
| 251 | + $this->filter_theme_mods( $theme_mods_value ); | |
| 252 | + $options[ $theme_mods_option ] = $theme_mods_value; | |
| 253 | + return $options; | |
| 254 | + } | |
| 255 | + | |
| 256 | + /** | |
| 257 | + * Update the options whitelist to the default one. | |
| 258 | + * | |
| 259 | + * @access public | |
| 260 | + */ | |
| 261 | + public function update_options_whitelist() { | |
| 262 | + $this->options_whitelist = Defaults::get_options_whitelist(); | |
| 263 | + } | |
| 264 | + | |
| 265 | + /** | |
| 266 | + * Set the options whitelist. | |
| 267 | + * | |
| 268 | + * @access public | |
| 269 | + * | |
| 270 | + * @param array $options The new options whitelist. | |
| 271 | + */ | |
| 272 | + public function set_options_whitelist( $options ) { | |
| 273 | + $this->options_whitelist = $options; | |
| 274 | + } | |
| 275 | + | |
| 276 | + /** | |
| 277 | + * Get the options whitelist. | |
| 278 | + * | |
| 279 | + * @access public | |
| 280 | + * | |
| 281 | + * @return array The options whitelist. | |
| 282 | + */ | |
| 283 | + public function get_options_whitelist() { | |
| 284 | + return $this->options_whitelist; | |
| 285 | + } | |
| 286 | + | |
| 287 | + /** | |
| 288 | + * Update the contentless options to the defaults. | |
| 289 | + * | |
| 290 | + * @access public | |
| 291 | + */ | |
| 292 | + public function update_options_contentless() { | |
| 293 | + $this->options_contentless = Defaults::get_options_contentless(); | |
| 294 | + } | |
| 295 | + | |
| 296 | + /** | |
| 297 | + * Get the contentless options. | |
| 298 | + * | |
| 299 | + * @access public | |
| 300 | + * | |
| 301 | + * @return array Array of the contentless options. | |
| 302 | + */ | |
| 303 | + public function get_options_contentless() { | |
| 304 | + return $this->options_contentless; | |
| 305 | + } | |
| 306 | + | |
| 307 | + /** | |
| 308 | + * Reject any options that aren't whitelisted or contentless. | |
| 309 | + * | |
| 310 | + * @access public | |
| 311 | + * | |
| 312 | + * @param array $args The hook parameters. | |
| 313 | + * @return array $args The hook parameters. | |
| 314 | + */ | |
| 315 | + public function whitelist_options( $args ) { | |
| 316 | + // Reject non-whitelisted options. | |
| 317 | + if ( ! $this->is_whitelisted_option( $args[0] ) ) { | |
| 318 | + return false; | |
| 319 | + } | |
| 320 | + | |
| 321 | + // Check if 'jetpack_options' were updated and reject if the change affected only blacklisted keys. | |
| 322 | + if ( 'jetpack_options' === $args[0] && 3 === count( $args ) ) { | |
| 323 | + if ( ! $this->should_enqueue_jetpack_options_update( $args[1], $args[2] ) ) { | |
| 324 | + return false; | |
| 325 | + } | |
| 326 | + | |
| 327 | + return $args; | |
| 328 | + } | |
| 329 | + | |
| 330 | + // Filter our weird array( false ) value for theme_mods_*. | |
| 331 | + if ( str_starts_with( $args[0], 'theme_mods_' ) ) { | |
| 332 | + $this->filter_theme_mods( $args[1] ); | |
| 333 | + if ( isset( $args[2] ) ) { | |
| 334 | + $this->filter_theme_mods( $args[2] ); | |
| 335 | + } | |
| 336 | + } | |
| 337 | + | |
| 338 | + // Set value(s) of contentless option to empty string(s). | |
| 339 | + if ( $this->is_contentless_option( $args[0] ) ) { | |
| 340 | + // Create a new array matching length of $args, containing empty strings. | |
| 341 | + $empty = array_fill( 0, count( $args ), '' ); | |
| 342 | + $empty[0] = $args[0]; | |
| 343 | + return $empty; | |
| 344 | + } | |
| 345 | + | |
| 346 | + return $args; | |
| 347 | + } | |
| 348 | + | |
| 349 | + /** | |
| 350 | + * Whether a certain option is whitelisted for sync. | |
| 351 | + * | |
| 352 | + * @access public | |
| 353 | + * | |
| 354 | + * @param string $option Option name. | |
| 355 | + * @return boolean Whether the option is whitelisted. | |
| 356 | + */ | |
| 357 | + public function is_whitelisted_option( $option ) { | |
| 358 | + return in_array( $option, $this->options_whitelist, true ) || str_starts_with( $option, 'theme_mods_' ); | |
| 359 | + } | |
| 360 | + | |
| 361 | + /** | |
| 362 | + * Whether a certain option is a contentless one. | |
| 363 | + * | |
| 364 | + * @access private | |
| 365 | + * | |
| 366 | + * @param string $option Option name. | |
| 367 | + * @return boolean Whether the option is contentless. | |
| 368 | + */ | |
| 369 | + private function is_contentless_option( $option ) { | |
| 370 | + return in_array( $option, $this->options_contentless, true ); | |
| 371 | + } | |
| 372 | + | |
| 373 | + /** | |
| 374 | + * Filters out falsy values from theme mod options. | |
| 375 | + * | |
| 376 | + * @access private | |
| 377 | + * | |
| 378 | + * @param array $value Option value. | |
| 379 | + */ | |
| 380 | + private function filter_theme_mods( &$value ) { | |
| 381 | + if ( is_array( $value ) && isset( $value[0] ) ) { | |
| 382 | + unset( $value[0] ); | |
| 383 | + } | |
| 384 | + } | |
| 385 | + | |
| 386 | + /** | |
| 387 | + * Handle changes in the core site icon and sync them. | |
| 388 | + * | |
| 389 | + * @access public | |
| 390 | + */ | |
| 391 | + public function jetpack_sync_core_icon() { | |
| 392 | + $url = get_site_icon_url(); | |
| 393 | + | |
| 394 | + $jetpack_url = \Jetpack_Options::get_option( 'site_icon_url' ); | |
| 395 | + if ( defined( 'JETPACK__PLUGIN_DIR' ) ) { | |
| 396 | + if ( ! function_exists( 'jetpack_site_icon_url' ) ) { | |
| 397 | + require_once JETPACK__PLUGIN_DIR . 'modules/site-icon/site-icon-functions.php'; | |
| 398 | + } | |
| 399 | + $jetpack_url = jetpack_site_icon_url(); | |
| 400 | + } | |
| 401 | + | |
| 402 | + // If there's a core icon, maybe update the option. If not, fall back to Jetpack's. | |
| 403 | + if ( ! empty( $url ) && $jetpack_url !== $url ) { | |
| 404 | + // This is the option that is synced with dotcom. | |
| 405 | + \Jetpack_Options::update_option( 'site_icon_url', $url ); | |
| 406 | + } elseif ( empty( $url ) ) { | |
| 407 | + \Jetpack_Options::delete_option( 'site_icon_url' ); | |
| 408 | + } | |
| 409 | + } | |
| 410 | + | |
| 411 | + /** | |
| 412 | + * Expand all options within a hook before they are serialized and sent to the server. | |
| 413 | + * | |
| 414 | + * @access public | |
| 415 | + * | |
| 416 | + * @param array $args The hook parameters. | |
| 417 | + * @return array $args The hook parameters. | |
| 418 | + */ | |
| 419 | + public function expand_options( $args ) { | |
| 420 | + if ( $args[0] ) { | |
| 421 | + return $this->get_all_options(); | |
| 422 | + } | |
| 423 | + | |
| 424 | + return $args; | |
| 425 | + } | |
| 426 | + | |
| 427 | + /** | |
| 428 | + * Return Total number of objects. | |
| 429 | + * | |
| 430 | + * @param array $config Full Sync config. | |
| 431 | + * | |
| 432 | + * @return int total | |
| 433 | + */ | |
| 434 | + public function total( $config ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | |
| 435 | + return count( Defaults::get_options_whitelist() ); | |
| 436 | + } | |
| 437 | + | |
| 438 | + /** | |
| 439 | + * Retrieve a set of options by their IDs. | |
| 440 | + * | |
| 441 | + * @access public | |
| 442 | + * | |
| 443 | + * @param string $object_type Object type. | |
| 444 | + * @param array $ids Object IDs. | |
| 445 | + * @return array Array of objects. | |
| 446 | + */ | |
| 447 | + public function get_objects_by_id( $object_type, $ids ) { | |
| 448 | + if ( empty( $ids ) || empty( $object_type ) || 'option' !== $object_type ) { | |
| 449 | + return array(); | |
| 450 | + } | |
| 451 | + | |
| 452 | + $objects = array(); | |
| 453 | + foreach ( (array) $ids as $id ) { | |
| 454 | + $object = $this->get_object_by_id( $object_type, $id ); | |
| 455 | + | |
| 456 | + // Only add object if we have the object. | |
| 457 | + if ( 'OPTION-DOES-NOT-EXIST' !== $object ) { | |
| 458 | + if ( 'all' === $id ) { | |
| 459 | + // If all was requested it contains all options and can simply be returned. | |
| 460 | + return $object; | |
| 461 | + } | |
| 462 | + $objects[ $id ] = $object; | |
| 463 | + } | |
| 464 | + } | |
| 465 | + | |
| 466 | + return $objects; | |
| 467 | + } | |
| 468 | + | |
| 469 | + /** | |
| 470 | + * Retrieve an option by its name. | |
| 471 | + * | |
| 472 | + * @access public | |
| 473 | + * | |
| 474 | + * @param string $object_type Type of the sync object. | |
| 475 | + * @param string $id ID of the sync object. | |
| 476 | + * @return mixed Value of Option or 'OPTION-DOES-NOT-EXIST' if not found. | |
| 477 | + */ | |
| 478 | + public function get_object_by_id( $object_type, $id ) { | |
| 479 | + if ( 'option' === $object_type ) { | |
| 480 | + // Utilize Random string as default value to distinguish between false and not exist. | |
| 481 | + $random_string = wp_generate_password(); | |
| 482 | + // Only whitelisted options can be returned. | |
| 483 | + if ( in_array( $id, $this->options_whitelist, true ) ) { | |
| 484 | + if ( str_starts_with( $id, Settings::SETTINGS_OPTION_PREFIX ) ) { | |
| 485 | + $option_value = Settings::get_setting( str_replace( Settings::SETTINGS_OPTION_PREFIX, '', $id ) ); | |
| 486 | + return $option_value; | |
| 487 | + } else { | |
| 488 | + $option_value = get_option( $id, $random_string ); | |
| 489 | + if ( $option_value !== $random_string ) { | |
| 490 | + return $option_value; | |
| 491 | + } | |
| 492 | + } | |
| 493 | + } elseif ( 'all' === $id ) { | |
| 494 | + return $this->get_all_options(); | |
| 495 | + } | |
| 496 | + } | |
| 497 | + | |
| 498 | + return 'OPTION-DOES-NOT-EXIST'; | |
| 499 | + } | |
| 500 | + | |
| 501 | + /** | |
| 502 | + * Check if 'jetpack_options' option update should be processed based on excluded keys. | |
| 503 | + * | |
| 504 | + * @param mixed $old_value The old option value. | |
| 505 | + * @param mixed $value The new option value. | |
| 506 | + * @return bool False if only excluded keys changed (or no change), true otherwise. | |
| 507 | + */ | |
| 508 | + private function should_enqueue_jetpack_options_update( $old_value, $value ) { | |
| 509 | + // No changes at all. | |
| 510 | + if ( $old_value === $value ) { | |
| 511 | + return false; | |
| 512 | + } | |
| 513 | + // Values are different but not both arrays - meaningful change. | |
| 514 | + if ( ! is_array( $old_value ) || ! is_array( $value ) ) { | |
| 515 | + return true; | |
| 516 | + } | |
| 517 | + // Determine all top-level keys present in either the old or new value. | |
| 518 | + $all_keys = array_unique( | |
| 519 | + array_merge( | |
| 520 | + array_keys( $old_value ), | |
| 521 | + array_keys( $value ) | |
| 522 | + ) | |
| 523 | + ); | |
| 524 | + // Short-circuit as soon as we find a changed key that is not blacklisted. | |
| 525 | + foreach ( $all_keys as $key ) { | |
| 526 | + $old_has_key = array_key_exists( $key, $old_value ); | |
| 527 | + $new_has_key = array_key_exists( $key, $value ); | |
| 528 | + // Key was added or removed. | |
| 529 | + if ( ! $old_has_key || ! $new_has_key ) { | |
| 530 | + if ( ! in_array( $key, Defaults::$jetpack_options_blacklist, true ) ) { | |
| 531 | + return true; | |
| 532 | + } | |
| 533 | + continue; | |
| 534 | + } | |
| 535 | + // Key exists in both arrays but the value changed. | |
| 536 | + if ( $old_value[ $key ] !== $value[ $key ] ) { | |
| 537 | + if ( ! in_array( $key, Defaults::$jetpack_options_blacklist, true ) ) { | |
| 538 | + return true; | |
| 539 | + } | |
| 540 | + } | |
| 541 | + } | |
| 542 | + // Either there were no effective changes, or all changed keys are excluded. | |
| 543 | + return false; | |
| 544 | + } | |
| 545 | +} | |