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1 <?php 2 /** 3 * WordPress Customize Widgets classes 4 * 5 * @package WordPress 6 * @subpackage Customize 7 * @since 3.9.0 8 */ 9 10 /** 11 * Customize Widgets class. 12 * 13 * Implements widget management in the Customizer. 14 * 15 * @since 3.9.0 16 * 17 * @see WP_Customize_Manager 18 */ 19 final class WP_Customize_Widgets { 20 21 /** 22 * WP_Customize_Manager instance. 23 * 24 * @since 3.9.0 25 * @var WP_Customize_Manager 26 */ 27 public $manager; 28 29 /** 30 * All id_bases for widgets defined in core. 31 * 32 * @since 3.9.0 33 * @var array 34 */ 35 protected $core_widget_id_bases = array( 36 'archives', 37 'calendar', 38 'categories', 39 'custom_html', 40 'links', 41 'media_audio', 42 'media_image', 43 'media_video', 44 'meta', 45 'nav_menu', 46 'pages', 47 'recent-comments', 48 'recent-posts', 49 'rss', 50 'search', 51 'tag_cloud', 52 'text', 53 ); 54 55 /** 56 * @since 3.9.0 57 * @var array 58 */ 59 protected $rendered_sidebars = array(); 60 61 /** 62 * @since 3.9.0 63 * @var array 64 */ 65 protected $rendered_widgets = array(); 66 67 /** 68 * @since 3.9.0 69 * @var array 70 */ 71 protected $old_sidebars_widgets = array(); 72 73 /** 74 * Mapping of widget ID base to whether it supports selective refresh. 75 * 76 * @since 4.5.0 77 * @var array 78 */ 79 protected $selective_refreshable_widgets; 80 81 /** 82 * Mapping of setting type to setting ID pattern. 83 * 84 * @since 4.2.0 85 * @var array 86 */ 87 protected $setting_id_patterns = array( 88 'widget_instance' => '/^widget_(?P<id_base>.+?)(?:\[(?P<widget_number>\d+)\])?$/', 89 'sidebar_widgets' => '/^sidebars_widgets\[(?P<sidebar_id>.+?)\]$/', 90 ); 91 92 /** 93 * Initial loader. 94 * 95 * @since 3.9.0 96 * 97 * @param WP_Customize_Manager $manager Customizer bootstrap instance. 98 */ 99 public function __construct( $manager ) { 100 $this->manager = $manager; 101 102 // See https://github.com/xwp/wp-customize-snapshots/blob/962586659688a5b1fd9ae93618b7ce2d4e7a421c/php/class-customize-snapshot-manager.php#L420-L449 103 add_filter( 'customize_dynamic_setting_args', array( $this, 'filter_customize_dynamic_setting_args' ), 10, 2 ); 104 add_action( 'widgets_init', array( $this, 'register_settings' ), 95 ); 105 add_action( 'customize_register', array( $this, 'schedule_customize_register' ), 1 ); 106 107 // Skip remaining hooks when the user can't manage widgets anyway. 108 if ( ! current_user_can( 'edit_theme_options' ) ) { 109 return; 110 } 111 112 add_action( 'wp_loaded', array( $this, 'override_sidebars_widgets_for_theme_switch' ) ); 113 add_action( 'customize_controls_init', array( $this, 'customize_controls_init' ) ); 114 add_action( 'customize_controls_enqueue_scripts', array( $this, 'enqueue_scripts' ) ); 115 add_action( 'customize_controls_print_styles', array( $this, 'print_styles' ) ); 116 add_action( 'customize_controls_print_scripts', array( $this, 'print_scripts' ) ); 117 add_action( 'customize_controls_print_footer_scripts', array( $this, 'print_footer_scripts' ) ); 118 add_action( 'customize_controls_print_footer_scripts', array( $this, 'output_widget_control_templates' ) ); 119 add_action( 'customize_preview_init', array( $this, 'customize_preview_init' ) ); 120 add_filter( 'customize_refresh_nonces', array( $this, 'refresh_nonces' ) ); 121 add_filter( 'should_load_block_editor_scripts_and_styles', array( $this, 'should_load_block_editor_scripts_and_styles' ) ); 122 123 add_action( 'dynamic_sidebar', array( $this, 'tally_rendered_widgets' ) ); 124 add_filter( 'is_active_sidebar', array( $this, 'tally_sidebars_via_is_active_sidebar_calls' ), 10, 2 ); 125 add_filter( 'dynamic_sidebar_has_widgets', array( $this, 'tally_sidebars_via_dynamic_sidebar_calls' ), 10, 2 ); 126 127 // Selective Refresh. 128 add_filter( 'customize_dynamic_partial_args', array( $this, 'customize_dynamic_partial_args' ), 10, 2 ); 129 add_action( 'customize_preview_init', array( $this, 'selective_refresh_init' ) ); 130 } 131 132 /** 133 * List whether each registered widget can be use selective refresh. 134 * 135 * If the theme does not support the customize-selective-refresh-widgets feature, 136 * then this will always return an empty array. 137 * 138 * @since 4.5.0 139 * 140 * @global WP_Widget_Factory $wp_widget_factory 141 * 142 * @return array Mapping of id_base to support. If theme doesn't support 143 * selective refresh, an empty array is returned. 144 */ 145 public function get_selective_refreshable_widgets() { 146 global $wp_widget_factory; 147 if ( ! current_theme_supports( 'customize-selective-refresh-widgets' ) ) { 148 return array(); 149 } 150 if ( ! isset( $this->selective_refreshable_widgets ) ) { 151 $this->selective_refreshable_widgets = array(); 152 foreach ( $wp_widget_factory->widgets as $wp_widget ) { 153 $this->selective_refreshable_widgets[ $wp_widget->id_base ] = ! empty( $wp_widget->widget_options['customize_selective_refresh'] ); 154 } 155 } 156 return $this->selective_refreshable_widgets; 157 } 158 159 /** 160 * Determines if a widget supports selective refresh. 161 * 162 * @since 4.5.0 163 * 164 * @param string $id_base Widget ID Base. 165 * @return bool Whether the widget can be selective refreshed. 166 */ 167 public function is_widget_selective_refreshable( $id_base ) { 168 $selective_refreshable_widgets = $this->get_selective_refreshable_widgets(); 169 return ! empty( $selective_refreshable_widgets[ $id_base ] ); 170 } 171 172 /** 173 * Retrieves the widget setting type given a setting ID. 174 * 175 * @since 4.2.0 176 * 177 * @param string $setting_id Setting ID. 178 * @return string|void Setting type. 179 */ 180 protected function get_setting_type( $setting_id ) { 181 static $cache = array(); 182 if ( isset( $cache[ $setting_id ] ) ) { 183 return $cache[ $setting_id ]; 184 } 185 foreach ( $this->setting_id_patterns as $type => $pattern ) { 186 if ( preg_match( $pattern, $setting_id ) ) { 187 $cache[ $setting_id ] = $type; 188 return $type; 189 } 190 } 191 } 192 193 /** 194 * Inspects the incoming customized data for any widget settings, and dynamically adds 195 * them up-front so widgets will be initialized properly. 196 * 197 * @since 4.2.0 198 */ 199 public function register_settings() { 200 $widget_setting_ids = array(); 201 $incoming_setting_ids = array_keys( $this->manager->unsanitized_post_values() ); 202 foreach ( $incoming_setting_ids as $setting_id ) { 203 if ( ! is_null( $this->get_setting_type( $setting_id ) ) ) { 204 $widget_setting_ids[] = $setting_id; 205 } 206 } 207 if ( $this->manager->doing_ajax( 'update-widget' ) && isset( $_REQUEST['widget-id'] ) ) { 208 $widget_setting_ids[] = $this->get_setting_id( wp_unslash( $_REQUEST['widget-id'] ) ); 209 } 210 211 $settings = $this->manager->add_dynamic_settings( array_unique( $widget_setting_ids ) ); 212 213 if ( $this->manager->settings_previewed() ) { 214 foreach ( $settings as $setting ) { 215 $setting->preview(); 216 } 217 } 218 } 219 220 /** 221 * Determines the arguments for a dynamically-created setting. 222 * 223 * @since 4.2.0 224 * 225 * @param false|array $args The arguments to the WP_Customize_Setting constructor. 226 * @param string $setting_id ID for dynamic setting, usually coming from `$_POST['customized']`. 227 * @return array|false Setting arguments, false otherwise. 228 */ 229 public function filter_customize_dynamic_setting_args( $args, $setting_id ) { 230 if ( $this->get_setting_type( $setting_id ) ) { 231 $args = $this->get_setting_args( $setting_id ); 232 } 233 return $args; 234 } 235 236 /** 237 * Retrieves an unslashed post value or return a default. 238 * 239 * @since 3.9.0 240 * 241 * @param string $name Post value. 242 * @param mixed $default Default post value. 243 * @return mixed Unslashed post value or default value. 244 */ 245 protected function get_post_value( $name, $default = null ) { 246 if ( ! isset( $_POST[ $name ] ) ) { 247 return $default; 248 } 249 250 return wp_unslash( $_POST[ $name ] ); 251 } 252 253 /** 254 * Override sidebars_widgets for theme switch. 255 * 256 * When switching a theme via the Customizer, supply any previously-configured 257 * sidebars_widgets from the target theme as the initial sidebars_widgets 258 * setting. Also store the old theme's existing settings so that they can 259 * be passed along for storing in the sidebars_widgets theme_mod when the 260 * theme gets switched. 261 * 262 * @since 3.9.0 263 * 264 * @global array $sidebars_widgets 265 * @global array $_wp_sidebars_widgets 266 */ 267 public function override_sidebars_widgets_for_theme_switch() { 268 global $sidebars_widgets; 269 270 if ( $this->manager->doing_ajax() || $this->manager->is_theme_active() ) { 271 return; 272 } 273 274 $this->old_sidebars_widgets = wp_get_sidebars_widgets(); 275 add_filter( 'customize_value_old_sidebars_widgets_data', array( $this, 'filter_customize_value_old_sidebars_widgets_data' ) ); 276 $this->manager->set_post_value( 'old_sidebars_widgets_data', $this->old_sidebars_widgets ); // Override any value cached in changeset. 277 278 // retrieve_widgets() looks at the global $sidebars_widgets. 279 $sidebars_widgets = $this->old_sidebars_widgets; 280 $sidebars_widgets = retrieve_widgets( 'customize' ); 281 add_filter( 'option_sidebars_widgets', array( $this, 'filter_option_sidebars_widgets_for_theme_switch' ), 1 ); 282 // Reset global cache var used by wp_get_sidebars_widgets(). 283 unset( $GLOBALS['_wp_sidebars_widgets'] ); 284 } 285 286 /** 287 * Filters old_sidebars_widgets_data Customizer setting. 288 * 289 * When switching themes, filter the Customizer setting old_sidebars_widgets_data 290 * to supply initial $sidebars_widgets before they were overridden by retrieve_widgets(). 291 * The value for old_sidebars_widgets_data gets set in the old theme's sidebars_widgets 292 * theme_mod. 293 * 294 * @since 3.9.0 295 * 296 * @see WP_Customize_Widgets::handle_theme_switch() 297 * 298 * @param array $old_sidebars_widgets 299 * @return array 300 */ 301 public function filter_customize_value_old_sidebars_widgets_data( $old_sidebars_widgets ) { 302 return $this->old_sidebars_widgets; 303 } 304 305 /** 306 * Filters sidebars_widgets option for theme switch. 307 * 308 * When switching themes, the retrieve_widgets() function is run when the Customizer initializes, 309 * and then the new sidebars_widgets here get supplied as the default value for the sidebars_widgets 310 * option. 311 * 312 * @since 3.9.0 313 * 314 * @see WP_Customize_Widgets::handle_theme_switch() 315 * @global array $sidebars_widgets 316 * 317 * @param array $sidebars_widgets 318 * @return array 319 */ 320 public function filter_option_sidebars_widgets_for_theme_switch( $sidebars_widgets ) { 321 $sidebars_widgets = $GLOBALS['sidebars_widgets']; 322 $sidebars_widgets['array_version'] = 3; 323 return $sidebars_widgets; 324 } 325 326 /** 327 * Ensures all widgets get loaded into the Customizer. 328 * 329 * Note: these actions are also fired in wp_ajax_update_widget(). 330 * 331 * @since 3.9.0 332 */ 333 public function customize_controls_init() { 334 /** This action is documented in wp-admin/includes/ajax-actions.php */ 335 do_action( 'load-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 336 337 /** This action is documented in wp-admin/includes/ajax-actions.php */ 338 do_action( 'widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 339 340 /** This action is documented in wp-admin/widgets.php */ 341 do_action( 'sidebar_admin_setup' ); 342 } 343 344 /** 345 * Ensures widgets are available for all types of previews. 346 * 347 * When in preview, hook to {@see 'customize_register'} for settings after WordPress is loaded 348 * so that all filters have been initialized (e.g. Widget Visibility). 349 * 350 * @since 3.9.0 351 */ 352 public function schedule_customize_register() { 353 if ( is_admin() ) { 354 $this->customize_register(); 355 } else { 356 add_action( 'wp', array( $this, 'customize_register' ) ); 357 } 358 } 359 360 /** 361 * Registers Customizer settings and controls for all sidebars and widgets. 362 * 363 * @since 3.9.0 364 * 365 * @global array $wp_registered_widgets 366 * @global array $wp_registered_widget_controls 367 * @global array $wp_registered_sidebars 368 */ 369 public function customize_register() { 370 global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_sidebars; 371 372 $use_widgets_block_editor = wp_use_widgets_block_editor(); 373 374 add_filter( 'sidebars_widgets', array( $this, 'preview_sidebars_widgets' ), 1 ); 375 376 $sidebars_widgets = array_merge( 377 array( 'wp_inactive_widgets' => array() ), 378 array_fill_keys( array_keys( $wp_registered_sidebars ), array() ), 379 wp_get_sidebars_widgets() 380 ); 381 382 $new_setting_ids = array(); 383 384 /* 385 * Register a setting for all widgets, including those which are active, 386 * inactive, and orphaned since a widget may get suppressed from a sidebar 387 * via a plugin (like Widget Visibility). 388 */ 389 foreach ( array_keys( $wp_registered_widgets ) as $widget_id ) { 390 $setting_id = $this->get_setting_id( $widget_id ); 391 $setting_args = $this->get_setting_args( $setting_id ); 392 if ( ! $this->manager->get_setting( $setting_id ) ) { 393 $this->manager->add_setting( $setting_id, $setting_args ); 394 } 395 $new_setting_ids[] = $setting_id; 396 } 397 398 /* 399 * Add a setting which will be supplied for the theme's sidebars_widgets 400 * theme_mod when the theme is switched. 401 */ 402 if ( ! $this->manager->is_theme_active() ) { 403 $setting_id = 'old_sidebars_widgets_data'; 404 $setting_args = $this->get_setting_args( 405 $setting_id, 406 array( 407 'type' => 'global_variable', 408 'dirty' => true, 409 ) 410 ); 411 $this->manager->add_setting( $setting_id, $setting_args ); 412 } 413 414 $this->manager->add_panel( 415 'widgets', 416 array( 417 'type' => 'widgets', 418 'title' => __( 'Widgets' ), 419 'description' => __( 'Widgets are independent sections of content that can be placed into widgetized areas provided by your theme (commonly called sidebars).' ), 420 'priority' => 110, 421 'active_callback' => array( $this, 'is_panel_active' ), 422 'auto_expand_sole_section' => true, 423 ) 424 ); 425 426 foreach ( $sidebars_widgets as $sidebar_id => $sidebar_widget_ids ) { 427 if ( empty( $sidebar_widget_ids ) ) { 428 $sidebar_widget_ids = array(); 429 } 430 431 $is_registered_sidebar = is_registered_sidebar( $sidebar_id ); 432 $is_inactive_widgets = ( 'wp_inactive_widgets' === $sidebar_id ); 433 $is_active_sidebar = ( $is_registered_sidebar && ! $is_inactive_widgets ); 434 435 // Add setting for managing the sidebar's widgets. 436 if ( $is_registered_sidebar || $is_inactive_widgets ) { 437 $setting_id = sprintf( 'sidebars_widgets[%s]', $sidebar_id ); 438 $setting_args = $this->get_setting_args( $setting_id ); 439 if ( ! $this->manager->get_setting( $setting_id ) ) { 440 if ( ! $this->manager->is_theme_active() ) { 441 $setting_args['dirty'] = true; 442 } 443 $this->manager->add_setting( $setting_id, $setting_args ); 444 } 445 $new_setting_ids[] = $setting_id; 446 447 // Add section to contain controls. 448 $section_id = sprintf( 'sidebar-widgets-%s', $sidebar_id ); 449 if ( $is_active_sidebar ) { 450 451 $section_args = array( 452 'title' => $wp_registered_sidebars[ $sidebar_id ]['name'], 453 'priority' => array_search( $sidebar_id, array_keys( $wp_registered_sidebars ), true ), 454 'panel' => 'widgets', 455 'sidebar_id' => $sidebar_id, 456 ); 457 458 if ( $use_widgets_block_editor ) { 459 $section_args['description'] = ''; 460 } else { 461 $section_args['description'] = $wp_registered_sidebars[ $sidebar_id ]['description']; 462 } 463 464 /** 465 * Filters Customizer widget section arguments for a given sidebar. 466 * 467 * @since 3.9.0 468 * 469 * @param array $section_args Array of Customizer widget section arguments. 470 * @param string $section_id Customizer section ID. 471 * @param int|string $sidebar_id Sidebar ID. 472 */ 473 $section_args = apply_filters( 'customizer_widgets_section_args', $section_args, $section_id, $sidebar_id ); 474 475 $section = new WP_Customize_Sidebar_Section( $this->manager, $section_id, $section_args ); 476 $this->manager->add_section( $section ); 477 478 if ( $use_widgets_block_editor ) { 479 $control = new WP_Sidebar_Block_Editor_Control( 480 $this->manager, 481 $setting_id, 482 array( 483 'section' => $section_id, 484 'sidebar_id' => $sidebar_id, 485 'label' => $section_args['title'], 486 'description' => $section_args['description'], 487 ) 488 ); 489 } else { 490 $control = new WP_Widget_Area_Customize_Control( 491 $this->manager, 492 $setting_id, 493 array( 494 'section' => $section_id, 495 'sidebar_id' => $sidebar_id, 496 'priority' => count( $sidebar_widget_ids ), // place 'Add Widget' and 'Reorder' buttons at end. 497 ) 498 ); 499 } 500 501 $this->manager->add_control( $control ); 502 503 $new_setting_ids[] = $setting_id; 504 } 505 } 506 507 if ( ! $use_widgets_block_editor ) { 508 // Add a control for each active widget (located in a sidebar). 509 foreach ( $sidebar_widget_ids as $i => $widget_id ) { 510 511 // Skip widgets that may have gone away due to a plugin being deactivated. 512 if ( ! $is_active_sidebar || ! isset( $wp_registered_widgets[ $widget_id ] ) ) { 513 continue; 514 } 515 516 $registered_widget = $wp_registered_widgets[ $widget_id ]; 517 $setting_id = $this->get_setting_id( $widget_id ); 518 $id_base = $wp_registered_widget_controls[ $widget_id ]['id_base']; 519 520 $control = new WP_Widget_Form_Customize_Control( 521 $this->manager, 522 $setting_id, 523 array( 524 'label' => $registered_widget['name'], 525 'section' => $section_id, 526 'sidebar_id' => $sidebar_id, 527 'widget_id' => $widget_id, 528 'widget_id_base' => $id_base, 529 'priority' => $i, 530 'width' => $wp_registered_widget_controls[ $widget_id ]['width'], 531 'height' => $wp_registered_widget_controls[ $widget_id ]['height'], 532 'is_wide' => $this->is_wide_widget( $widget_id ), 533 ) 534 ); 535 $this->manager->add_control( $control ); 536 } 537 } 538 } 539 540 if ( $this->manager->settings_previewed() ) { 541 foreach ( $new_setting_ids as $new_setting_id ) { 542 $this->manager->get_setting( $new_setting_id )->preview(); 543 } 544 } 545 } 546 547 /** 548 * Determines whether the widgets panel is active, based on whether there are sidebars registered. 549 * 550 * @since 4.4.0 551 * 552 * @see WP_Customize_Panel::$active_callback 553 * 554 * @global array $wp_registered_sidebars 555 * @return bool Active. 556 */ 557 public function is_panel_active() { 558 global $wp_registered_sidebars; 559 return ! empty( $wp_registered_sidebars ); 560 } 561 562 /** 563 * Converts a widget_id into its corresponding Customizer setting ID (option name). 564 * 565 * @since 3.9.0 566 * 567 * @param string $widget_id Widget ID. 568 * @return string Maybe-parsed widget ID. 569 */ 570 public function get_setting_id( $widget_id ) { 571 $parsed_widget_id = $this->parse_widget_id( $widget_id ); 572 $setting_id = sprintf( 'widget_%s', $parsed_widget_id['id_base'] ); 573 574 if ( ! is_null( $parsed_widget_id['number'] ) ) { 575 $setting_id .= sprintf( '[%d]', $parsed_widget_id['number'] ); 576 } 577 return $setting_id; 578 } 579 580 /** 581 * Determines whether the widget is considered "wide". 582 * 583 * Core widgets which may have controls wider than 250, but can still be shown 584 * in the narrow Customizer panel. The RSS and Text widgets in Core, for example, 585 * have widths of 400 and yet they still render fine in the Customizer panel. 586 * 587 * This method will return all Core widgets as being not wide, but this can be 588 * overridden with the {@see 'is_wide_widget_in_customizer'} filter. 589 * 590 * @since 3.9.0 591 * 592 * @global array $wp_registered_widget_controls 593 * 594 * @param string $widget_id Widget ID. 595 * @return bool Whether or not the widget is a "wide" widget. 596 */ 597 public function is_wide_widget( $widget_id ) { 598 global $wp_registered_widget_controls; 599 600 $parsed_widget_id = $this->parse_widget_id( $widget_id ); 601 $width = $wp_registered_widget_controls[ $widget_id ]['width']; 602 $is_core = in_array( $parsed_widget_id['id_base'], $this->core_widget_id_bases, true ); 603 $is_wide = ( $width > 250 && ! $is_core ); 604 605 /** 606 * Filters whether the given widget is considered "wide". 607 * 608 * @since 3.9.0 609 * 610 * @param bool $is_wide Whether the widget is wide, Default false. 611 * @param string $widget_id Widget ID. 612 */ 613 return apply_filters( 'is_wide_widget_in_customizer', $is_wide, $widget_id ); 614 } 615 616 /** 617 * Converts a widget ID into its id_base and number components. 618 * 619 * @since 3.9.0 620 * 621 * @param string $widget_id Widget ID. 622 * @return array Array containing a widget's id_base and number components. 623 */ 624 public function parse_widget_id( $widget_id ) { 625 $parsed = array( 626 'number' => null, 627 'id_base' => null, 628 ); 629 630 if ( preg_match( '/^(.+)-(\d+)$/', $widget_id, $matches ) ) { 631 $parsed['id_base'] = $matches[1]; 632 $parsed['number'] = (int) $matches[2]; 633 } else { 634 // Likely an old single widget. 635 $parsed['id_base'] = $widget_id; 636 } 637 return $parsed; 638 } 639 640 /** 641 * Converts a widget setting ID (option path) to its id_base and number components. 642 * 643 * @since 3.9.0 644 * 645 * @param string $setting_id Widget setting ID. 646 * @return array|WP_Error Array containing a widget's id_base and number components, 647 * or a WP_Error object. 648 */ 649 public function parse_widget_setting_id( $setting_id ) { 650 if ( ! preg_match( '/^(widget_(.+?))(?:\[(\d+)\])?$/', $setting_id, $matches ) ) { 651 return new WP_Error( 'widget_setting_invalid_id' ); 652 } 653 654 $id_base = $matches[2]; 655 $number = isset( $matches[3] ) ? (int) $matches[3] : null; 656 657 return compact( 'id_base', 'number' ); 658 } 659 660 /** 661 * Calls admin_print_styles-widgets.php and admin_print_styles hooks to 662 * allow custom styles from plugins. 663 * 664 * @since 3.9.0 665 */ 666 public function print_styles() { 667 /** This action is documented in wp-admin/admin-header.php */ 668 do_action( 'admin_print_styles-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 669 670 /** This action is documented in wp-admin/admin-header.php */ 671 do_action( 'admin_print_styles' ); 672 } 673 674 /** 675 * Calls admin_print_scripts-widgets.php and admin_print_scripts hooks to 676 * allow custom scripts from plugins. 677 * 678 * @since 3.9.0 679 */ 680 public function print_scripts() { 681 /** This action is documented in wp-admin/admin-header.php */ 682 do_action( 'admin_print_scripts-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 683 684 /** This action is documented in wp-admin/admin-header.php */ 685 do_action( 'admin_print_scripts' ); 686 } 687 688 /** 689 * Enqueues scripts and styles for Customizer panel and export data to JavaScript. 690 * 691 * @since 3.9.0 692 * 693 * @global WP_Scripts $wp_scripts 694 * @global array $wp_registered_sidebars 695 * @global array $wp_registered_widgets 696 */ 697 public function enqueue_scripts() { 698 global $wp_scripts, $wp_registered_sidebars, $wp_registered_widgets; 699 700 wp_enqueue_style( 'customize-widgets' ); 701 wp_enqueue_script( 'customize-widgets' ); 702 703 /** This action is documented in wp-admin/admin-header.php */ 704 do_action( 'admin_enqueue_scripts', 'widgets.php' ); 705 706 /* 707 * Export available widgets with control_tpl removed from model 708 * since plugins need templates to be in the DOM. 709 */ 710 $available_widgets = array(); 711 712 foreach ( $this->get_available_widgets() as $available_widget ) { 713 unset( $available_widget['control_tpl'] ); 714 $available_widgets[] = $available_widget; 715 } 716 717 $widget_reorder_nav_tpl = sprintf( 718 '<div class="widget-reorder-nav"><span class="move-widget" tabindex="0">%1$s</span><span class="move-widget-down" tabindex="0">%2$s</span><span class="move-widget-up" tabindex="0">%3$s</span></div>', 719 __( 'Move to another area…' ), 720 __( 'Move down' ), 721 __( 'Move up' ) 722 ); 723 724 $move_widget_area_tpl = str_replace( 725 array( '{description}', '{btn}' ), 726 array( 727 __( 'Select an area to move this widget into:' ), 728 _x( 'Move', 'Move widget' ), 729 ), 730 '<div class="move-widget-area"> 731 <p class="description">{description}</p> 732 <ul class="widget-area-select"> 733 <% _.each( sidebars, function ( sidebar ){ %> 734 <li class="" data-id="<%- sidebar.id %>" title="<%- sidebar.description %>" tabindex="0"><%- sidebar.name %></li> 735 <% }); %> 736 </ul> 737 <div class="move-widget-actions"> 738 <button class="move-widget-btn button" type="button">{btn}</button> 739 </div> 740 </div>' 741 ); 742 743 /* 744 * Gather all strings in PHP that may be needed by JS on the client. 745 * Once JS i18n is implemented (in #20491), this can be removed. 746 */ 747 $some_non_rendered_areas_messages = array(); 748 $some_non_rendered_areas_messages[1] = html_entity_decode( 749 __( 'Your theme has 1 other widget area, but this particular page doesn’t display it.' ), 750 ENT_QUOTES, 751 get_bloginfo( 'charset' ) 752 ); 753 $registered_sidebar_count = count( $wp_registered_sidebars ); 754 for ( $non_rendered_count = 2; $non_rendered_count < $registered_sidebar_count; $non_rendered_count++ ) { 755 $some_non_rendered_areas_messages[ $non_rendered_count ] = html_entity_decode( 756 sprintf( 757 /* translators: %s: The number of other widget areas registered but not rendered. */ 758 _n( 759 'Your theme has %s other widget area, but this particular page doesn’t display it.', 760 'Your theme has %s other widget areas, but this particular page doesn’t display them.', 761 $non_rendered_count 762 ), 763 number_format_i18n( $non_rendered_count ) 764 ), 765 ENT_QUOTES, 766 get_bloginfo( 'charset' ) 767 ); 768 } 769 770 if ( 1 === $registered_sidebar_count ) { 771 $no_areas_shown_message = html_entity_decode( 772 sprintf( 773 __( 'Your theme has 1 widget area, but this particular page doesn’t display it.' ) 774 ), 775 ENT_QUOTES, 776 get_bloginfo( 'charset' ) 777 ); 778 } else { 779 $no_areas_shown_message = html_entity_decode( 780 sprintf( 781 /* translators: %s: The total number of widget areas registered. */ 782 _n( 783 'Your theme has %s widget area, but this particular page doesn’t display it.', 784 'Your theme has %s widget areas, but this particular page doesn’t display them.', 785 $registered_sidebar_count 786 ), 787 number_format_i18n( $registered_sidebar_count ) 788 ), 789 ENT_QUOTES, 790 get_bloginfo( 'charset' ) 791 ); 792 } 793 794 $settings = array( 795 'registeredSidebars' => array_values( $wp_registered_sidebars ), 796 'registeredWidgets' => $wp_registered_widgets, 797 'availableWidgets' => $available_widgets, // @todo Merge this with registered_widgets. 798 'l10n' => array( 799 'saveBtnLabel' => __( 'Apply' ), 800 'saveBtnTooltip' => __( 'Save and preview changes before publishing them.' ), 801 'removeBtnLabel' => __( 'Remove' ), 802 'removeBtnTooltip' => __( 'Keep widget settings and move it to the inactive widgets' ), 803 'error' => __( 'An error has occurred. Please reload the page and try again.' ), 804 'widgetMovedUp' => __( 'Widget moved up' ), 805 'widgetMovedDown' => __( 'Widget moved down' ), 806 'navigatePreview' => __( 'You can navigate to other pages on your site while using the Customizer to view and edit the widgets displayed on those pages.' ), 807 'someAreasShown' => $some_non_rendered_areas_messages, 808 'noAreasShown' => $no_areas_shown_message, 809 'reorderModeOn' => __( 'Reorder mode enabled' ), 810 'reorderModeOff' => __( 'Reorder mode closed' ), 811 'reorderLabelOn' => esc_attr__( 'Reorder widgets' ), 812 /* translators: %d: The number of widgets found. */ 813 'widgetsFound' => __( 'Number of widgets found: %d' ), 814 'noWidgetsFound' => __( 'No widgets found.' ), 815 ), 816 'tpl' => array( 817 'widgetReorderNav' => $widget_reorder_nav_tpl, 818 'moveWidgetArea' => $move_widget_area_tpl, 819 ), 820 'selectiveRefreshableWidgets' => $this->get_selective_refreshable_widgets(), 821 ); 822 823 foreach ( $settings['registeredWidgets'] as &$registered_widget ) { 824 unset( $registered_widget['callback'] ); // May not be JSON-serializeable. 825 } 826 827 $wp_scripts->add_data( 828 'customize-widgets', 829 'data', 830 sprintf( 'var _wpCustomizeWidgetsSettings = %s;', wp_json_encode( $settings ) ) 831 ); 832 833 /* 834 * TODO: Update 'wp-customize-widgets' to not rely so much on things in 835 * 'customize-widgets'. This will let us skip most of the above and not 836 * enqueue 'customize-widgets' which saves bytes. 837 */ 838 839 if ( wp_use_widgets_block_editor() ) { 840 $block_editor_context = new WP_Block_Editor_Context(); 841 842 $editor_settings = get_block_editor_settings( 843 get_legacy_widget_block_editor_settings(), 844 $block_editor_context 845 ); 846 847 wp_add_inline_script( 848 'wp-customize-widgets', 849 sprintf( 850 'wp.domReady( function() { 851 wp.customizeWidgets.initialize( "widgets-customizer", %s ); 852 } );', 853 wp_json_encode( $editor_settings ) 854 ) 855 ); 856 857 // Preload server-registered block schemas. 858 wp_add_inline_script( 859 'wp-blocks', 860 'wp.blocks.unstable__bootstrapServerSideBlockDefinitions(' . wp_json_encode( get_block_editor_server_block_settings() ) . ');' 861 ); 862 863 wp_add_inline_script( 864 'wp-blocks', 865 sprintf( 'wp.blocks.setCategories( %s );', wp_json_encode( get_block_categories( $block_editor_context ) ) ), 866 'after' 867 ); 868 869 wp_enqueue_script( 'wp-customize-widgets' ); 870 wp_enqueue_style( 'wp-customize-widgets' ); 871 872 /** This action is documented in edit-form-blocks.php */ 873 do_action( 'enqueue_block_editor_assets' ); 874 } 875 } 876 877 /** 878 * Renders the widget form control templates into the DOM. 879 * 880 * @since 3.9.0 881 */ 882 public function output_widget_control_templates() { 883 ?> 884 <div id="widgets-left"><!-- compatibility with JS which looks for widget templates here --> 885 <div id="available-widgets"> 886 <div class="customize-section-title"> 887 <button class="customize-section-back" tabindex="-1"> 888 <span class="screen-reader-text"><?php _e( 'Back' ); ?></span> 889 </button> 890 <h3> 891 <span class="customize-action"> 892 <?php 893 /* translators: ▸ is the unicode right-pointing triangle. %s: Section title in the Customizer. */ 894 printf( __( 'Customizing ▸ %s' ), esc_html( $this->manager->get_panel( 'widgets' )->title ) ); 895 ?> 896 </span> 897 <?php _e( 'Add a Widget' ); ?> 898 </h3> 899 </div> 900 <div id="available-widgets-filter"> 901 <label class="screen-reader-text" for="widgets-search"><?php _e( 'Search Widgets' ); ?></label> 902 <input type="text" id="widgets-search" placeholder="<?php esc_attr_e( 'Search widgets…' ); ?>" aria-describedby="widgets-search-desc" /> 903 <div class="search-icon" aria-hidden="true"></div> 904 <button type="button" class="clear-results"><span class="screen-reader-text"><?php _e( 'Clear Results' ); ?></span></button> 905 <p class="screen-reader-text" id="widgets-search-desc"><?php _e( 'The search results will be updated as you type.' ); ?></p> 906 </div> 907 <div id="available-widgets-list"> 908 <?php foreach ( $this->get_available_widgets() as $available_widget ) : ?> 909 <div id="widget-tpl-<?php echo esc_attr( $available_widget['id'] ); ?>" data-widget-id="<?php echo esc_attr( $available_widget['id'] ); ?>" class="widget-tpl <?php echo esc_attr( $available_widget['id'] ); ?>" tabindex="0"> 910 <?php echo $available_widget['control_tpl']; ?> 911 </div> 912 <?php endforeach; ?> 913 <p class="no-widgets-found-message"><?php _e( 'No widgets found.' ); ?></p> 914 </div><!-- #available-widgets-list --> 915 </div><!-- #available-widgets --> 916 </div><!-- #widgets-left --> 917 <?php 918 } 919 920 /** 921 * Calls admin_print_footer_scripts and admin_print_scripts hooks to 922 * allow custom scripts from plugins. 923 * 924 * @since 3.9.0 925 */ 926 public function print_footer_scripts() { 927 /** This action is documented in wp-admin/admin-footer.php */ 928 do_action( 'admin_print_footer_scripts-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 929 930 /** This action is documented in wp-admin/admin-footer.php */ 931 do_action( 'admin_print_footer_scripts' ); 932 933 /** This action is documented in wp-admin/admin-footer.php */ 934 do_action( 'admin_footer-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 935 } 936 937 /** 938 * Retrieves common arguments to supply when constructing a Customizer setting. 939 * 940 * @since 3.9.0 941 * 942 * @param string $id Widget setting ID. 943 * @param array $overrides Array of setting overrides. 944 * @return array Possibly modified setting arguments. 945 */ 946 public function get_setting_args( $id, $overrides = array() ) { 947 $args = array( 948 'type' => 'option', 949 'capability' => 'edit_theme_options', 950 'default' => array(), 951 ); 952 953 if ( preg_match( $this->setting_id_patterns['sidebar_widgets'], $id, $matches ) ) { 954 $args['sanitize_callback'] = array( $this, 'sanitize_sidebar_widgets' ); 955 $args['sanitize_js_callback'] = array( $this, 'sanitize_sidebar_widgets_js_instance' ); 956 $args['transport'] = current_theme_supports( 'customize-selective-refresh-widgets' ) ? 'postMessage' : 'refresh'; 957 } elseif ( preg_match( $this->setting_id_patterns['widget_instance'], $id, $matches ) ) { 958 $id_base = $matches['id_base']; 959 $args['sanitize_callback'] = function( $value ) use ( $id_base ) { 960 return $this->sanitize_widget_instance( $value, $id_base ); 961 }; 962 $args['sanitize_js_callback'] = function( $value ) use ( $id_base ) { 963 return $this->sanitize_widget_js_instance( $value, $id_base ); 964 }; 965 $args['transport'] = $this->is_widget_selective_refreshable( $matches['id_base'] ) ? 'postMessage' : 'refresh'; 966 } 967 968 $args = array_merge( $args, $overrides ); 969 970 /** 971 * Filters the common arguments supplied when constructing a Customizer setting. 972 * 973 * @since 3.9.0 974 * 975 * @see WP_Customize_Setting 976 * 977 * @param array $args Array of Customizer setting arguments. 978 * @param string $id Widget setting ID. 979 */ 980 return apply_filters( 'widget_customizer_setting_args', $args, $id ); 981 } 982 983 /** 984 * Ensures sidebar widget arrays only ever contain widget IDS. 985 * 986 * Used as the 'sanitize_callback' for each $sidebars_widgets setting. 987 * 988 * @since 3.9.0 989 * 990 * @param string[] $widget_ids Array of widget IDs. 991 * @return string[] Array of sanitized widget IDs. 992 */ 993 public function sanitize_sidebar_widgets( $widget_ids ) { 994 $widget_ids = array_map( 'strval', (array) $widget_ids ); 995 $sanitized_widget_ids = array(); 996 foreach ( $widget_ids as $widget_id ) { 997 $sanitized_widget_ids[] = preg_replace( '/[^a-z0-9_\-]/', '', $widget_id ); 998 } 999 return $sanitized_widget_ids; 1000 } 1001 1002 /** 1003 * Builds up an index of all available widgets for use in Backbone models. 1004 * 1005 * @since 3.9.0 1006 * 1007 * @global array $wp_registered_widgets 1008 * @global array $wp_registered_widget_controls 1009 * 1010 * @see wp_list_widgets() 1011 * 1012 * @return array List of available widgets. 1013 */ 1014 public function get_available_widgets() { 1015 static $available_widgets = array(); 1016 if ( ! empty( $available_widgets ) ) { 1017 return $available_widgets; 1018 } 1019 1020 global $wp_registered_widgets, $wp_registered_widget_controls; 1021 require_once ABSPATH . 'wp-admin/includes/widgets.php'; // For next_widget_id_number(). 1022 1023 $sort = $wp_registered_widgets; 1024 usort( $sort, array( $this, '_sort_name_callback' ) ); 1025 $done = array(); 1026 1027 foreach ( $sort as $widget ) { 1028 if ( in_array( $widget['callback'], $done, true ) ) { // We already showed this multi-widget. 1029 continue; 1030 } 1031 1032 $sidebar = is_active_widget( $widget['callback'], $widget['id'], false, false ); 1033 $done[] = $widget['callback']; 1034 1035 if ( ! isset( $widget['params'][0] ) ) { 1036 $widget['params'][0] = array(); 1037 } 1038 1039 $available_widget = $widget; 1040 unset( $available_widget['callback'] ); // Not serializable to JSON. 1041 1042 $args = array( 1043 'widget_id' => $widget['id'], 1044 'widget_name' => $widget['name'], 1045 '_display' => 'template', 1046 ); 1047 1048 $is_disabled = false; 1049 $is_multi_widget = ( isset( $wp_registered_widget_controls[ $widget['id'] ]['id_base'] ) && isset( $widget['params'][0]['number'] ) ); 1050 if ( $is_multi_widget ) { 1051 $id_base = $wp_registered_widget_controls[ $widget['id'] ]['id_base']; 1052 $args['_temp_id'] = "$id_base-__i__"; 1053 $args['_multi_num'] = next_widget_id_number( $id_base ); 1054 $args['_add'] = 'multi'; 1055 } else { 1056 $args['_add'] = 'single'; 1057 1058 if ( $sidebar && 'wp_inactive_widgets' !== $sidebar ) { 1059 $is_disabled = true; 1060 } 1061 $id_base = $widget['id']; 1062 } 1063 1064 $list_widget_controls_args = wp_list_widget_controls_dynamic_sidebar( 1065 array( 1066 0 => $args, 1067 1 => $widget['params'][0], 1068 ) 1069 ); 1070 $control_tpl = $this->get_widget_control( $list_widget_controls_args ); 1071 1072 // The properties here are mapped to the Backbone Widget model. 1073 $available_widget = array_merge( 1074 $available_widget, 1075 array( 1076 'temp_id' => isset( $args['_temp_id'] ) ? $args['_temp_id'] : null, 1077 'is_multi' => $is_multi_widget, 1078 'control_tpl' => $control_tpl, 1079 'multi_number' => ( 'multi' === $args['_add'] ) ? $args['_multi_num'] : false, 1080 'is_disabled' => $is_disabled, 1081 'id_base' => $id_base, 1082 'transport' => $this->is_widget_selective_refreshable( $id_base ) ? 'postMessage' : 'refresh', 1083 'width' => $wp_registered_widget_controls[ $widget['id'] ]['width'], 1084 'height' => $wp_registered_widget_controls[ $widget['id'] ]['height'], 1085 'is_wide' => $this->is_wide_widget( $widget['id'] ), 1086 ) 1087 ); 1088 1089 $available_widgets[] = $available_widget; 1090 } 1091 1092 return $available_widgets; 1093 } 1094 1095 /** 1096 * Naturally orders available widgets by name. 1097 * 1098 * @since 3.9.0 1099 * 1100 * @param array $widget_a The first widget to compare. 1101 * @param array $widget_b The second widget to compare. 1102 * @return int Reorder position for the current widget comparison. 1103 */ 1104 protected function _sort_name_callback( $widget_a, $widget_b ) { 1105 return strnatcasecmp( $widget_a['name'], $widget_b['name'] ); 1106 } 1107 1108 /** 1109 * Retrieves the widget control markup. 1110 * 1111 * @since 3.9.0 1112 * 1113 * @param array $args Widget control arguments. 1114 * @return string Widget control form HTML markup. 1115 */ 1116 public function get_widget_control( $args ) { 1117 $args[0]['before_form'] = '<div class="form">'; 1118 $args[0]['after_form'] = '</div><!-- .form -->'; 1119 $args[0]['before_widget_content'] = '<div class="widget-content">'; 1120 $args[0]['after_widget_content'] = '</div><!-- .widget-content -->'; 1121 ob_start(); 1122 wp_widget_control( ...$args ); 1123 $control_tpl = ob_get_clean(); 1124 return $control_tpl; 1125 } 1126 1127 /** 1128 * Retrieves the widget control markup parts. 1129 * 1130 * @since 4.4.0 1131 * 1132 * @param array $args Widget control arguments. 1133 * @return array { 1134 * @type string $control Markup for widget control wrapping form. 1135 * @type string $content The contents of the widget form itself. 1136 * } 1137 */ 1138 public function get_widget_control_parts( $args ) { 1139 $args[0]['before_widget_content'] = '<div class="widget-content">'; 1140 $args[0]['after_widget_content'] = '</div><!-- .widget-content -->'; 1141 $control_markup = $this->get_widget_control( $args ); 1142 1143 $content_start_pos = strpos( $control_markup, $args[0]['before_widget_content'] ); 1144 $content_end_pos = strrpos( $control_markup, $args[0]['after_widget_content'] ); 1145 1146 $control = substr( $control_markup, 0, $content_start_pos + strlen( $args[0]['before_widget_content'] ) ); 1147 $control .= substr( $control_markup, $content_end_pos ); 1148 $content = trim( 1149 substr( 1150 $control_markup, 1151 $content_start_pos + strlen( $args[0]['before_widget_content'] ), 1152 $content_end_pos - $content_start_pos - strlen( $args[0]['before_widget_content'] ) 1153 ) 1154 ); 1155 1156 return compact( 'control', 'content' ); 1157 } 1158 1159 /** 1160 * Adds hooks for the Customizer preview. 1161 * 1162 * @since 3.9.0 1163 */ 1164 public function customize_preview_init() { 1165 add_action( 'wp_enqueue_scripts', array( $this, 'customize_preview_enqueue' ) ); 1166 add_action( 'wp_print_styles', array( $this, 'print_preview_css' ), 1 ); 1167 add_action( 'wp_footer', array( $this, 'export_preview_data' ), 20 ); 1168 } 1169 1170 /** 1171 * Refreshes the nonce for widget updates. 1172 * 1173 * @since 4.2.0 1174 * 1175 * @param array $nonces Array of nonces. 1176 * @return array Array of nonces. 1177 */ 1178 public function refresh_nonces( $nonces ) { 1179 $nonces['update-widget'] = wp_create_nonce( 'update-widget' ); 1180 return $nonces; 1181 } 1182 1183 /** 1184 * Tells the script loader to load the scripts and styles of custom blocks 1185 * if the widgets block editor is enabled. 1186 * 1187 * @since 5.8.0 1188 * 1189 * @param bool $is_block_editor_screen Current decision about loading block assets. 1190 * @return bool Filtered decision about loading block assets. 1191 */ 1192 public function should_load_block_editor_scripts_and_styles( $is_block_editor_screen ) { 1193 if ( wp_use_widgets_block_editor() ) { 1194 return true; 1195 } 1196 1197 return $is_block_editor_screen; 1198 } 1199 1200 /** 1201 * When previewing, ensures the proper previewing widgets are used. 1202 * 1203 * Because wp_get_sidebars_widgets() gets called early at {@see 'init' } (via 1204 * wp_convert_widget_settings()) and can set global variable `$_wp_sidebars_widgets` 1205 * to the value of `get_option( 'sidebars_widgets' )` before the Customizer preview 1206 * filter is added, it has to be reset after the filter has been added. 1207 * 1208 * @since 3.9.0 1209 * 1210 * @param array $sidebars_widgets List of widgets for the current sidebar. 1211 * @return array 1212 */ 1213 public function preview_sidebars_widgets( $sidebars_widgets ) { 1214 $sidebars_widgets = get_option( 'sidebars_widgets', array() ); 1215 1216 unset( $sidebars_widgets['array_version'] ); 1217 return $sidebars_widgets; 1218 } 1219 1220 /** 1221 * Enqueues scripts for the Customizer preview. 1222 * 1223 * @since 3.9.0 1224 */ 1225 public function customize_preview_enqueue() { 1226 wp_enqueue_script( 'customize-preview-widgets' ); 1227 } 1228 1229 /** 1230 * Inserts default style for highlighted widget at early point so theme 1231 * stylesheet can override. 1232 * 1233 * @since 3.9.0 1234 */ 1235 public function print_preview_css() { 1236 ?> 1237 <style> 1238 .widget-customizer-highlighted-widget { 1239 outline: none; 1240 -webkit-box-shadow: 0 0 2px rgba(30, 140, 190, 0.8); 1241 box-shadow: 0 0 2px rgba(30, 140, 190, 0.8); 1242 position: relative; 1243 z-index: 1; 1244 } 1245 </style> 1246 <?php 1247 } 1248 1249 /** 1250 * Communicates the sidebars that appeared on the page at the very end of the page, 1251 * and at the very end of the wp_footer, 1252 * 1253 * @since 3.9.0 1254 * 1255 * @global array $wp_registered_sidebars 1256 * @global array $wp_registered_widgets 1257 */ 1258 public function export_preview_data() { 1259 global $wp_registered_sidebars, $wp_registered_widgets; 1260 1261 $switched_locale = switch_to_locale( get_user_locale() ); 1262 1263 $l10n = array( 1264 'widgetTooltip' => __( 'Shift-click to edit this widget.' ), 1265 ); 1266 1267 if ( $switched_locale ) { 1268 restore_previous_locale(); 1269 } 1270 1271 $rendered_sidebars = array_filter( $this->rendered_sidebars ); 1272 $rendered_widgets = array_filter( $this->rendered_widgets ); 1273 1274 // Prepare Customizer settings to pass to JavaScript. 1275 $settings = array( 1276 'renderedSidebars' => array_fill_keys( array_keys( $rendered_sidebars ), true ), 1277 'renderedWidgets' => array_fill_keys( array_keys( $rendered_widgets ), true ), 1278 'registeredSidebars' => array_values( $wp_registered_sidebars ), 1279 'registeredWidgets' => $wp_registered_widgets, 1280 'l10n' => $l10n, 1281 'selectiveRefreshableWidgets' => $this->get_selective_refreshable_widgets(), 1282 ); 1283 1284 foreach ( $settings['registeredWidgets'] as &$registered_widget ) { 1285 unset( $registered_widget['callback'] ); // May not be JSON-serializeable. 1286 } 1287 1288 ?> 1289 <script type="text/javascript"> 1290 var _wpWidgetCustomizerPreviewSettings = <?php echo wp_json_encode( $settings ); ?>; 1291 </script> 1292 <?php 1293 } 1294 1295 /** 1296 * Tracks the widgets that were rendered. 1297 * 1298 * @since 3.9.0 1299 * 1300 * @param array $widget Rendered widget to tally. 1301 */ 1302 public function tally_rendered_widgets( $widget ) { 1303 $this->rendered_widgets[ $widget['id'] ] = true; 1304 } 1305 1306 /** 1307 * Determine if a widget is rendered on the page. 1308 * 1309 * @since 4.0.0 1310 * 1311 * @param string $widget_id Widget ID to check. 1312 * @return bool Whether the widget is rendered. 1313 */ 1314 public function is_widget_rendered( $widget_id ) { 1315 return ! empty( $this->rendered_widgets[ $widget_id ] ); 1316 } 1317 1318 /** 1319 * Determines if a sidebar is rendered on the page. 1320 * 1321 * @since 4.0.0 1322 * 1323 * @param string $sidebar_id Sidebar ID to check. 1324 * @return bool Whether the sidebar is rendered. 1325 */ 1326 public function is_sidebar_rendered( $sidebar_id ) { 1327 return ! empty( $this->rendered_sidebars[ $sidebar_id ] ); 1328 } 1329 1330 /** 1331 * Tallies the sidebars rendered via is_active_sidebar(). 1332 * 1333 * Keep track of the times that is_active_sidebar() is called in the template, 1334 * and assume that this means that the sidebar would be rendered on the template 1335 * if there were widgets populating it. 1336 * 1337 * @since 3.9.0 1338 * 1339 * @param bool $is_active Whether the sidebar is active. 1340 * @param string $sidebar_id Sidebar ID. 1341 * @return bool Whether the sidebar is active. 1342 */ 1343 public function tally_sidebars_via_is_active_sidebar_calls( $is_active, $sidebar_id ) { 1344 if ( is_registered_sidebar( $sidebar_id ) ) { 1345 $this->rendered_sidebars[ $sidebar_id ] = true; 1346 } 1347 1348 /* 1349 * We may need to force this to true, and also force-true the value 1350 * for 'dynamic_sidebar_has_widgets' if we want to ensure that there 1351 * is an area to drop widgets into, if the sidebar is empty. 1352 */ 1353 return $is_active; 1354 } 1355 1356 /** 1357 * Tallies the sidebars rendered via dynamic_sidebar(). 1358 * 1359 * Keep track of the times that dynamic_sidebar() is called in the template, 1360 * and assume this means the sidebar would be rendered on the template if 1361 * there were widgets populating it. 1362 * 1363 * @since 3.9.0 1364 * 1365 * @param bool $has_widgets Whether the current sidebar has widgets. 1366 * @param string $sidebar_id Sidebar ID. 1367 * @return bool Whether the current sidebar has widgets. 1368 */ 1369 public function tally_sidebars_via_dynamic_sidebar_calls( $has_widgets, $sidebar_id ) { 1370 if ( is_registered_sidebar( $sidebar_id ) ) { 1371 $this->rendered_sidebars[ $sidebar_id ] = true; 1372 } 1373 1374 /* 1375 * We may need to force this to true, and also force-true the value 1376 * for 'is_active_sidebar' if we want to ensure there is an area to 1377 * drop widgets into, if the sidebar is empty. 1378 */ 1379 return $has_widgets; 1380 } 1381 1382 /** 1383 * Retrieves MAC for a serialized widget instance string. 1384 * 1385 * Allows values posted back from JS to be rejected if any tampering of the 1386 * data has occurred. 1387 * 1388 * @since 3.9.0 1389 * 1390 * @param string $serialized_instance Widget instance. 1391 * @return string MAC for serialized widget instance. 1392 */ 1393 protected function get_instance_hash_key( $serialized_instance ) { 1394 return wp_hash( $serialized_instance ); 1395 } 1396 1397 /** 1398 * Sanitizes a widget instance. 1399 * 1400 * Unserialize the JS-instance for storing in the options. It's important that this filter 1401 * only get applied to an instance *once*. 1402 * 1403 * @since 3.9.0 1404 * @since 5.8.0 Added the `$id_base` parameter. 1405 * 1406 * @global WP_Widget_Factory $wp_widget_factory 1407 * 1408 * @param array $value Widget instance to sanitize. 1409 * @param string $id_base Optional. Base of the ID of the widget being sanitized. Default null. 1410 * @return array|void Sanitized widget instance. 1411 */ 1412 public function sanitize_widget_instance( $value, $id_base = null ) { 1413 global $wp_widget_factory; 1414 1415 if ( array() === $value ) { 1416 return $value; 1417 } 1418 1419 if ( isset( $value['raw_instance'] ) && $id_base && wp_use_widgets_block_editor() ) { 1420 $widget_object = $wp_widget_factory->get_widget_object( $id_base ); 1421 if ( ! empty( $widget_object->widget_options['show_instance_in_rest'] ) ) { 1422 if ( 'block' === $id_base && ! current_user_can( 'unfiltered_html' ) ) { 1423 /* 1424 * The content of the 'block' widget is not filtered on the 1425 * fly while editing. Filter the content here to prevent 1426 * vulnerabilities. 1427 */ 1428 $value['raw_instance']['content'] = wp_kses_post( $value['raw_instance']['content'] ); 1429 } 1430 1431 return $value['raw_instance']; 1432 } 1433 } 1434 1435 if ( 1436 empty( $value['is_widget_customizer_js_value'] ) || 1437 empty( $value['instance_hash_key'] ) || 1438 empty( $value['encoded_serialized_instance'] ) 1439 ) { 1440 return; 1441 } 1442 1443 $decoded = base64_decode( $value['encoded_serialized_instance'], true ); 1444 if ( false === $decoded ) { 1445 return; 1446 } 1447 1448 if ( ! hash_equals( $this->get_instance_hash_key( $decoded ), $value['instance_hash_key'] ) ) { 1449 return; 1450 } 1451 1452 $instance = unserialize( $decoded ); 1453 if ( false === $instance ) { 1454 return; 1455 } 1456 1457 return $instance; 1458 } 1459 1460 /** 1461 * Converts a widget instance into JSON-representable format. 1462 * 1463 * @since 3.9.0 1464 * @since 5.8.0 Added the `$id_base` parameter. 1465 * 1466 * @global WP_Widget_Factory $wp_widget_factory 1467 * 1468 * @param array $value Widget instance to convert to JSON. 1469 * @param string $id_base Optional. Base of the ID of the widget being sanitized. Default null. 1470 * @return array JSON-converted widget instance. 1471 */ 1472 public function sanitize_widget_js_instance( $value, $id_base = null ) { 1473 global $wp_widget_factory; 1474 1475 if ( empty( $value['is_widget_customizer_js_value'] ) ) { 1476 $serialized = serialize( $value ); 1477 1478 $js_value = array( 1479 'encoded_serialized_instance' => base64_encode( $serialized ), 1480 'title' => empty( $value['title'] ) ? '' : $value['title'], 1481 'is_widget_customizer_js_value' => true, 1482 'instance_hash_key' => $this->get_instance_hash_key( $serialized ), 1483 ); 1484 1485 if ( $id_base && wp_use_widgets_block_editor() ) { 1486 $widget_object = $wp_widget_factory->get_widget_object( $id_base ); 1487 if ( ! empty( $widget_object->widget_options['show_instance_in_rest'] ) ) { 1488 $js_value['raw_instance'] = (object) $value; 1489 } 1490 } 1491 1492 return $js_value; 1493 } 1494 1495 return $value; 1496 } 1497 1498 /** 1499 * Strips out widget IDs for widgets which are no longer registered. 1500 * 1501 * One example where this might happen is when a plugin orphans a widget 1502 * in a sidebar upon deactivation. 1503 * 1504 * @since 3.9.0 1505 * 1506 * @global array $wp_registered_widgets 1507 * 1508 * @param array $widget_ids List of widget IDs. 1509 * @return array Parsed list of widget IDs. 1510 */ 1511 public function sanitize_sidebar_widgets_js_instance( $widget_ids ) { 1512 global $wp_registered_widgets; 1513 $widget_ids = array_values( array_intersect( $widget_ids, array_keys( $wp_registered_widgets ) ) ); 1514 return $widget_ids; 1515 } 1516 1517 /** 1518 * Finds and invokes the widget update and control callbacks. 1519 * 1520 * Requires that `$_POST` be populated with the instance data. 1521 * 1522 * @since 3.9.0 1523 * 1524 * @global array $wp_registered_widget_updates 1525 * @global array $wp_registered_widget_controls 1526 * 1527 * @param string $widget_id Widget ID. 1528 * @return array|WP_Error Array containing the updated widget information. 1529 * A WP_Error object, otherwise. 1530 */ 1531 public function call_widget_update( $widget_id ) { 1532 global $wp_registered_widget_updates, $wp_registered_widget_controls; 1533 1534 $setting_id = $this->get_setting_id( $widget_id ); 1535 1536 /* 1537 * Make sure that other setting changes have previewed since this widget 1538 * may depend on them (e.g. Menus being present for Navigation Menu widget). 1539 */ 1540 if ( ! did_action( 'customize_preview_init' ) ) { 1541 foreach ( $this->manager->settings() as $setting ) { 1542 if ( $setting->id !== $setting_id ) { 1543 $setting->preview(); 1544 } 1545 } 1546 } 1547 1548 $this->start_capturing_option_updates(); 1549 $parsed_id = $this->parse_widget_id( $widget_id ); 1550 $option_name = 'widget_' . $parsed_id['id_base']; 1551 1552 /* 1553 * If a previously-sanitized instance is provided, populate the input vars 1554 * with its values so that the widget update callback will read this instance 1555 */ 1556 $added_input_vars = array(); 1557 if ( ! empty( $_POST['sanitized_widget_setting'] ) ) { 1558 $sanitized_widget_setting = json_decode( $this->get_post_value( 'sanitized_widget_setting' ), true ); 1559 if ( false === $sanitized_widget_setting ) { 1560 $this->stop_capturing_option_updates(); 1561 return new WP_Error( 'widget_setting_malformed' ); 1562 } 1563 1564 $instance = $this->sanitize_widget_instance( $sanitized_widget_setting, $parsed_id['id_base'] ); 1565 if ( is_null( $instance ) ) { 1566 $this->stop_capturing_option_updates(); 1567 return new WP_Error( 'widget_setting_unsanitized' ); 1568 } 1569 1570 if ( ! is_null( $parsed_id['number'] ) ) { 1571 $value = array(); 1572 $value[ $parsed_id['number'] ] = $instance; 1573 $key = 'widget-' . $parsed_id['id_base']; 1574 $_REQUEST[ $key ] = wp_slash( $value ); 1575 $_POST[ $key ] = $_REQUEST[ $key ]; 1576 $added_input_vars[] = $key; 1577 } else { 1578 foreach ( $instance as $key => $value ) { 1579 $_REQUEST[ $key ] = wp_slash( $value ); 1580 $_POST[ $key ] = $_REQUEST[ $key ]; 1581 $added_input_vars[] = $key; 1582 } 1583 } 1584 } 1585 1586 // Invoke the widget update callback. 1587 foreach ( (array) $wp_registered_widget_updates as $name => $control ) { 1588 if ( $name === $parsed_id['id_base'] && is_callable( $control['callback'] ) ) { 1589 ob_start(); 1590 call_user_func_array( $control['callback'], $control['params'] ); 1591 ob_end_clean(); 1592 break; 1593 } 1594 } 1595 1596 // Clean up any input vars that were manually added. 1597 foreach ( $added_input_vars as $key ) { 1598 unset( $_POST[ $key ] ); 1599 unset( $_REQUEST[ $key ] ); 1600 } 1601 1602 // Make sure the expected option was updated. 1603 if ( 0 !== $this->count_captured_options() ) { 1604 if ( $this->count_captured_options() > 1 ) { 1605 $this->stop_capturing_option_updates(); 1606 return new WP_Error( 'widget_setting_too_many_options' ); 1607 } 1608 1609 $updated_option_name = key( $this->get_captured_options() ); 1610 if ( $updated_option_name !== $option_name ) { 1611 $this->stop_capturing_option_updates(); 1612 return new WP_Error( 'widget_setting_unexpected_option' ); 1613 } 1614 } 1615 1616 // Obtain the widget instance. 1617 $option = $this->get_captured_option( $option_name ); 1618 if ( null !== $parsed_id['number'] ) { 1619 $instance = $option[ $parsed_id['number'] ]; 1620 } else { 1621 $instance = $option; 1622 } 1623 1624 /* 1625 * Override the incoming $_POST['customized'] for a newly-created widget's 1626 * setting with the new $instance so that the preview filter currently 1627 * in place from WP_Customize_Setting::preview() will use this value 1628 * instead of the default widget instance value (an empty array). 1629 */ 1630 $this->manager->set_post_value( $setting_id, $this->sanitize_widget_js_instance( $instance, $parsed_id['id_base'] ) ); 1631 1632 // Obtain the widget control with the updated instance in place. 1633 ob_start(); 1634 $form = $wp_registered_widget_controls[ $widget_id ]; 1635 if ( $form ) { 1636 call_user_func_array( $form['callback'], $form['params'] ); 1637 } 1638 $form = ob_get_clean(); 1639 1640 $this->stop_capturing_option_updates(); 1641 1642 return compact( 'instance', 'form' ); 1643 } 1644 1645 /** 1646 * Updates widget settings asynchronously. 1647 * 1648 * Allows the Customizer to update a widget using its form, but return the new 1649 * instance info via Ajax instead of saving it to the options table. 1650 * 1651 * Most code here copied from wp_ajax_save_widget(). 1652 * 1653 * @since 3.9.0 1654 * 1655 * @see wp_ajax_save_widget() 1656 */ 1657 public function wp_ajax_update_widget() { 1658 1659 if ( ! is_user_logged_in() ) { 1660 wp_die( 0 ); 1661 } 1662 1663 check_ajax_referer( 'update-widget', 'nonce' ); 1664 1665 if ( ! current_user_can( 'edit_theme_options' ) ) { 1666 wp_die( -1 ); 1667 } 1668 1669 if ( empty( $_POST['widget-id'] ) ) { 1670 wp_send_json_error( 'missing_widget-id' ); 1671 } 1672 1673 /** This action is documented in wp-admin/includes/ajax-actions.php */ 1674 do_action( 'load-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 1675 1676 /** This action is documented in wp-admin/includes/ajax-actions.php */ 1677 do_action( 'widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores 1678 1679 /** This action is documented in wp-admin/widgets.php */ 1680 do_action( 'sidebar_admin_setup' ); 1681 1682 $widget_id = $this->get_post_value( 'widget-id' ); 1683 $parsed_id = $this->parse_widget_id( $widget_id ); 1684 $id_base = $parsed_id['id_base']; 1685 1686 $is_updating_widget_template = ( 1687 isset( $_POST[ 'widget-' . $id_base ] ) 1688 && 1689 is_array( $_POST[ 'widget-' . $id_base ] ) 1690 && 1691 preg_match( '/__i__|%i%/', key( $_POST[ 'widget-' . $id_base ] ) ) 1692 ); 1693 if ( $is_updating_widget_template ) { 1694 wp_send_json_error( 'template_widget_not_updatable' ); 1695 } 1696 1697 $updated_widget = $this->call_widget_update( $widget_id ); // => {instance,form} 1698 if ( is_wp_error( $updated_widget ) ) { 1699 wp_send_json_error( $updated_widget->get_error_code() ); 1700 } 1701 1702 $form = $updated_widget['form']; 1703 $instance = $this->sanitize_widget_js_instance( $updated_widget['instance'], $id_base ); 1704 1705 wp_send_json_success( compact( 'form', 'instance' ) ); 1706 } 1707 1708 /* 1709 * Selective Refresh Methods 1710 */ 1711 1712 /** 1713 * Filters arguments for dynamic widget partials. 1714 * 1715 * @since 4.5.0 1716 * 1717 * @param array|false $partial_args Partial arguments. 1718 * @param string $partial_id Partial ID. 1719 * @return array (Maybe) modified partial arguments. 1720 */ 1721 public function customize_dynamic_partial_args( $partial_args, $partial_id ) { 1722 if ( ! current_theme_supports( 'customize-selective-refresh-widgets' ) ) { 1723 return $partial_args; 1724 } 1725 1726 if ( preg_match( '/^widget\[(?P<widget_id>.+)\]$/', $partial_id, $matches ) ) { 1727 if ( false === $partial_args ) { 1728 $partial_args = array(); 1729 } 1730 $partial_args = array_merge( 1731 $partial_args, 1732 array( 1733 'type' => 'widget', 1734 'render_callback' => array( $this, 'render_widget_partial' ), 1735 'container_inclusive' => true, 1736 'settings' => array( $this->get_setting_id( $matches['widget_id'] ) ), 1737 'capability' => 'edit_theme_options', 1738 ) 1739 ); 1740 } 1741 1742 return $partial_args; 1743 } 1744 1745 /** 1746 * Adds hooks for selective refresh. 1747 * 1748 * @since 4.5.0 1749 */ 1750 public function selective_refresh_init() { 1751 if ( ! current_theme_supports( 'customize-selective-refresh-widgets' ) ) { 1752 return; 1753 } 1754 add_filter( 'dynamic_sidebar_params', array( $this, 'filter_dynamic_sidebar_params' ) ); 1755 add_filter( 'wp_kses_allowed_html', array( $this, 'filter_wp_kses_allowed_data_attributes' ) ); 1756 add_action( 'dynamic_sidebar_before', array( $this, 'start_dynamic_sidebar' ) ); 1757 add_action( 'dynamic_sidebar_after', array( $this, 'end_dynamic_sidebar' ) ); 1758 } 1759 1760 /** 1761 * Inject selective refresh data attributes into widget container elements. 1762 * 1763 * @since 4.5.0 1764 * 1765 * @param array $params { 1766 * Dynamic sidebar params. 1767 * 1768 * @type array $args Sidebar args. 1769 * @type array $widget_args Widget args. 1770 * } 1771 * @see WP_Customize_Nav_Menus::filter_wp_nav_menu_args() 1772 * 1773 * @return array Params. 1774 */ 1775 public function filter_dynamic_sidebar_params( $params ) { 1776 $sidebar_args = array_merge( 1777 array( 1778 'before_widget' => '', 1779 'after_widget' => '', 1780 ), 1781 $params[0] 1782 ); 1783 1784 // Skip widgets not in a registered sidebar or ones which lack a proper wrapper element to attach the data-* attributes to. 1785 $matches = array(); 1786 $is_valid = ( 1787 isset( $sidebar_args['id'] ) 1788 && 1789 is_registered_sidebar( $sidebar_args['id'] ) 1790 && 1791 ( isset( $this->current_dynamic_sidebar_id_stack[0] ) && $this->current_dynamic_sidebar_id_stack[0] === $sidebar_args['id'] ) 1792 && 1793 preg_match( '#^<(?P<tag_name>\w+)#', $sidebar_args['before_widget'], $matches ) 1794 ); 1795 if ( ! $is_valid ) { 1796 return $params; 1797 } 1798 $this->before_widget_tags_seen[ $matches['tag_name'] ] = true; 1799 1800 $context = array( 1801 'sidebar_id' => $sidebar_args['id'], 1802 ); 1803 if ( isset( $this->context_sidebar_instance_number ) ) { 1804 $context['sidebar_instance_number'] = $this->context_sidebar_instance_number; 1805 } elseif ( isset( $sidebar_args['id'] ) && isset( $this->sidebar_instance_count[ $sidebar_args['id'] ] ) ) { 1806 $context['sidebar_instance_number'] = $this->sidebar_instance_count[ $sidebar_args['id'] ]; 1807 } 1808 1809 $attributes = sprintf( ' data-customize-partial-id="%s"', esc_attr( 'widget[' . $sidebar_args['widget_id'] . ']' ) ); 1810 $attributes .= ' data-customize-partial-type="widget"'; 1811 $attributes .= sprintf( ' data-customize-partial-placement-context="%s"', esc_attr( wp_json_encode( $context ) ) ); 1812 $attributes .= sprintf( ' data-customize-widget-id="%s"', esc_attr( $sidebar_args['widget_id'] ) ); 1813 $sidebar_args['before_widget'] = preg_replace( '#^(<\w+)#', '$1 ' . $attributes, $sidebar_args['before_widget'] ); 1814 1815 $params[0] = $sidebar_args; 1816 return $params; 1817 } 1818 1819 /** 1820 * List of the tag names seen for before_widget strings. 1821 * 1822 * This is used in the {@see 'filter_wp_kses_allowed_html'} filter to ensure that the 1823 * data-* attributes can be allowed. 1824 * 1825 * @since 4.5.0 1826 * @var array 1827 */ 1828 protected $before_widget_tags_seen = array(); 1829 1830 /** 1831 * Ensures the HTML data-* attributes for selective refresh are allowed by kses. 1832 * 1833 * This is needed in case the `$before_widget` is run through wp_kses() when printed. 1834 * 1835 * @since 4.5.0 1836 * 1837 * @param array $allowed_html Allowed HTML. 1838 * @return array (Maybe) modified allowed HTML. 1839 */ 1840 public function filter_wp_kses_allowed_data_attributes( $allowed_html ) { 1841 foreach ( array_keys( $this->before_widget_tags_seen ) as $tag_name ) { 1842 if ( ! isset( $allowed_html[ $tag_name ] ) ) { 1843 $allowed_html[ $tag_name ] = array(); 1844 } 1845 $allowed_html[ $tag_name ] = array_merge( 1846 $allowed_html[ $tag_name ], 1847 array_fill_keys( 1848 array( 1849 'data-customize-partial-id', 1850 'data-customize-partial-type', 1851 'data-customize-partial-placement-context', 1852 'data-customize-partial-widget-id', 1853 'data-customize-partial-options', 1854 ), 1855 true 1856 ) 1857 ); 1858 } 1859 return $allowed_html; 1860 } 1861 1862 /** 1863 * Keep track of the number of times that dynamic_sidebar() was called for a given sidebar index. 1864 * 1865 * This helps facilitate the uncommon scenario where a single sidebar is rendered multiple times on a template. 1866 * 1867 * @since 4.5.0 1868 * @var array 1869 */ 1870 protected $sidebar_instance_count = array(); 1871 1872 /** 1873 * The current request's sidebar_instance_number context. 1874 * 1875 * @since 4.5.0 1876 * @var int|null 1877 */ 1878 protected $context_sidebar_instance_number; 1879 1880 /** 1881 * Current sidebar ID being rendered. 1882 * 1883 * @since 4.5.0 1884 * @var array 1885 */ 1886 protected $current_dynamic_sidebar_id_stack = array(); 1887 1888 /** 1889 * Begins keeping track of the current sidebar being rendered. 1890 * 1891 * Insert marker before widgets are rendered in a dynamic sidebar. 1892 * 1893 * @since 4.5.0 1894 * 1895 * @param int|string $index Index, name, or ID of the dynamic sidebar. 1896 */ 1897 public function start_dynamic_sidebar( $index ) { 1898 array_unshift( $this->current_dynamic_sidebar_id_stack, $index ); 1899 if ( ! isset( $this->sidebar_instance_count[ $index ] ) ) { 1900 $this->sidebar_instance_count[ $index ] = 0; 1901 } 1902 $this->sidebar_instance_count[ $index ] += 1; 1903 if ( ! $this->manager->selective_refresh->is_render_partials_request() ) { 1904 printf( "\n<!--dynamic_sidebar_before:%s:%d-->\n", esc_html( $index ), (int) $this->sidebar_instance_count[ $index ] ); 1905 } 1906 } 1907 1908 /** 1909 * Finishes keeping track of the current sidebar being rendered. 1910 * 1911 * Inserts a marker after widgets are rendered in a dynamic sidebar. 1912 * 1913 * @since 4.5.0 1914 * 1915 * @param int|string $index Index, name, or ID of the dynamic sidebar. 1916 */ 1917 public function end_dynamic_sidebar( $index ) { 1918 array_shift( $this->current_dynamic_sidebar_id_stack ); 1919 if ( ! $this->manager->selective_refresh->is_render_partials_request() ) { 1920 printf( "\n<!--dynamic_sidebar_after:%s:%d-->\n", esc_html( $index ), (int) $this->sidebar_instance_count[ $index ] ); 1921 } 1922 } 1923 1924 /** 1925 * Current sidebar being rendered. 1926 * 1927 * @since 4.5.0 1928 * @var string|null 1929 */ 1930 protected $rendering_widget_id; 1931 1932 /** 1933 * Current widget being rendered. 1934 * 1935 * @since 4.5.0 1936 * @var string|null 1937 */ 1938 protected $rendering_sidebar_id; 1939 1940 /** 1941 * Filters sidebars_widgets to ensure the currently-rendered widget is the only widget in the current sidebar. 1942 * 1943 * @since 4.5.0 1944 * 1945 * @param array $sidebars_widgets Sidebars widgets. 1946 * @return array Filtered sidebars widgets. 1947 */ 1948 public function filter_sidebars_widgets_for_rendering_widget( $sidebars_widgets ) { 1949 $sidebars_widgets[ $this->rendering_sidebar_id ] = array( $this->rendering_widget_id ); 1950 return $sidebars_widgets; 1951 } 1952 1953 /** 1954 * Renders a specific widget using the supplied sidebar arguments. 1955 * 1956 * @since 4.5.0 1957 * 1958 * @see dynamic_sidebar() 1959 * 1960 * @param WP_Customize_Partial $partial Partial. 1961 * @param array $context { 1962 * Sidebar args supplied as container context. 1963 * 1964 * @type string $sidebar_id ID for sidebar for widget to render into. 1965 * @type int $sidebar_instance_number Disambiguating instance number. 1966 * } 1967 * @return string|false 1968 */ 1969 public function render_widget_partial( $partial, $context ) { 1970 $id_data = $partial->id_data(); 1971 $widget_id = array_shift( $id_data['keys'] ); 1972 1973 if ( ! is_array( $context ) 1974 || empty( $context['sidebar_id'] ) 1975 || ! is_registered_sidebar( $context['sidebar_id'] ) 1976 ) { 1977 return false; 1978 } 1979 1980 $this->rendering_sidebar_id = $context['sidebar_id']; 1981 1982 if ( isset( $context['sidebar_instance_number'] ) ) { 1983 $this->context_sidebar_instance_number = (int) $context['sidebar_instance_number']; 1984 } 1985 1986 // Filter sidebars_widgets so that only the queried widget is in the sidebar. 1987 $this->rendering_widget_id = $widget_id; 1988 1989 $filter_callback = array( $this, 'filter_sidebars_widgets_for_rendering_widget' ); 1990 add_filter( 'sidebars_widgets', $filter_callback, 1000 ); 1991 1992 // Render the widget. 1993 ob_start(); 1994 $this->rendering_sidebar_id = $context['sidebar_id']; 1995 dynamic_sidebar( $this->rendering_sidebar_id ); 1996 $container = ob_get_clean(); 1997 1998 // Reset variables for next partial render. 1999 remove_filter( 'sidebars_widgets', $filter_callback, 1000 ); 2000 2001 $this->context_sidebar_instance_number = null; 2002 $this->rendering_sidebar_id = null; 2003 $this->rendering_widget_id = null; 2004 2005 return $container; 2006 } 2007 2008 // 2009 // Option Update Capturing. 2010 // 2011 2012 /** 2013 * List of captured widget option updates. 2014 * 2015 * @since 3.9.0 2016 * @var array $_captured_options Values updated while option capture is happening. 2017 */ 2018 protected $_captured_options = array(); 2019 2020 /** 2021 * Whether option capture is currently happening. 2022 * 2023 * @since 3.9.0 2024 * @var bool $_is_current Whether option capture is currently happening or not. 2025 */ 2026 protected $_is_capturing_option_updates = false; 2027 2028 /** 2029 * Determines whether the captured option update should be ignored. 2030 * 2031 * @since 3.9.0 2032 * 2033 * @param string $option_name Option name. 2034 * @return bool Whether the option capture is ignored. 2035 */ 2036 protected function is_option_capture_ignored( $option_name ) { 2037 return ( 0 === strpos( $option_name, '_transient_' ) ); 2038 } 2039 2040 /** 2041 * Retrieves captured widget option updates. 2042 * 2043 * @since 3.9.0 2044 * 2045 * @return array Array of captured options. 2046 */ 2047 protected function get_captured_options() { 2048 return $this->_captured_options; 2049 } 2050 2051 /** 2052 * Retrieves the option that was captured from being saved. 2053 * 2054 * @since 4.2.0 2055 * 2056 * @param string $option_name Option name. 2057 * @param mixed $default Optional. Default value to return if the option does not exist. Default false. 2058 * @return mixed Value set for the option. 2059 */ 2060 protected function get_captured_option( $option_name, $default = false ) { 2061 if ( array_key_exists( $option_name, $this->_captured_options ) ) { 2062 $value = $this->_captured_options[ $option_name ]; 2063 } else { 2064 $value = $default; 2065 } 2066 return $value; 2067 } 2068 2069 /** 2070 * Retrieves the number of captured widget option updates. 2071 * 2072 * @since 3.9.0 2073 * 2074 * @return int Number of updated options. 2075 */ 2076 protected function count_captured_options() { 2077 return count( $this->_captured_options ); 2078 } 2079 2080 /** 2081 * Begins keeping track of changes to widget options, caching new values. 2082 * 2083 * @since 3.9.0 2084 */ 2085 protected function start_capturing_option_updates() { 2086 if ( $this->_is_capturing_option_updates ) { 2087 return; 2088 } 2089 2090 $this->_is_capturing_option_updates = true; 2091 2092 add_filter( 'pre_update_option', array( $this, 'capture_filter_pre_update_option' ), 10, 3 ); 2093 } 2094 2095 /** 2096 * Pre-filters captured option values before updating. 2097 * 2098 * @since 3.9.0 2099 * 2100 * @param mixed $new_value The new option value. 2101 * @param string $option_name Name of the option. 2102 * @param mixed $old_value The old option value. 2103 * @return mixed Filtered option value. 2104 */ 2105 public function capture_filter_pre_update_option( $new_value, $option_name, $old_value ) { 2106 if ( $this->is_option_capture_ignored( $option_name ) ) { 2107 return $new_value; 2108 } 2109 2110 if ( ! isset( $this->_captured_options[ $option_name ] ) ) { 2111 add_filter( "pre_option_{$option_name}", array( $this, 'capture_filter_pre_get_option' ) ); 2112 } 2113 2114 $this->_captured_options[ $option_name ] = $new_value; 2115 2116 return $old_value; 2117 } 2118 2119 /** 2120 * Pre-filters captured option values before retrieving. 2121 * 2122 * @since 3.9.0 2123 * 2124 * @param mixed $value Value to return instead of the option value. 2125 * @return mixed Filtered option value. 2126 */ 2127 public function capture_filter_pre_get_option( $value ) { 2128 $option_name = preg_replace( '/^pre_option_/', '', current_filter() ); 2129 2130 if ( isset( $this->_captured_options[ $option_name ] ) ) { 2131 $value = $this->_captured_options[ $option_name ]; 2132 2133 /** This filter is documented in wp-includes/option.php */ 2134 $value = apply_filters( 'option_' . $option_name, $value, $option_name ); 2135 } 2136 2137 return $value; 2138 } 2139 2140 /** 2141 * Undoes any changes to the options since options capture began. 2142 * 2143 * @since 3.9.0 2144 */ 2145 protected function stop_capturing_option_updates() { 2146 if ( ! $this->_is_capturing_option_updates ) { 2147 return; 2148 } 2149 2150 remove_filter( 'pre_update_option', array( $this, 'capture_filter_pre_update_option' ), 10 ); 2151 2152 foreach ( array_keys( $this->_captured_options ) as $option_name ) { 2153 remove_filter( "pre_option_{$option_name}", array( $this, 'capture_filter_pre_get_option' ) ); 2154 } 2155 2156 $this->_captured_options = array(); 2157 $this->_is_capturing_option_updates = false; 2158 } 2159 2160 /** 2161 * {@internal Missing Summary} 2162 * 2163 * See the {@see 'customize_dynamic_setting_args'} filter. 2164 * 2165 * @since 3.9.0 2166 * @deprecated 4.2.0 Deprecated in favor of the {@see 'customize_dynamic_setting_args'} filter. 2167 */ 2168 public function setup_widget_addition_previews() { 2169 _deprecated_function( __METHOD__, '4.2.0', 'customize_dynamic_setting_args' ); 2170 } 2171 2172 /** 2173 * {@internal Missing Summary} 2174 * 2175 * See the {@see 'customize_dynamic_setting_args'} filter. 2176 * 2177 * @since 3.9.0 2178 * @deprecated 4.2.0 Deprecated in favor of the {@see 'customize_dynamic_setting_args'} filter. 2179 */ 2180 public function prepreview_added_sidebars_widgets() { 2181 _deprecated_function( __METHOD__, '4.2.0', 'customize_dynamic_setting_args' ); 2182 } 2183 2184 /** 2185 * {@internal Missing Summary} 2186 * 2187 * See the {@see 'customize_dynamic_setting_args'} filter. 2188 * 2189 * @since 3.9.0 2190 * @deprecated 4.2.0 Deprecated in favor of the {@see 'customize_dynamic_setting_args'} filter. 2191 */ 2192 public function prepreview_added_widget_instance() { 2193 _deprecated_function( __METHOD__, '4.2.0', 'customize_dynamic_setting_args' ); 2194 } 2195 2196 /** 2197 * {@internal Missing Summary} 2198 * 2199 * See the {@see 'customize_dynamic_setting_args'} filter. 2200 * 2201 * @since 3.9.0 2202 * @deprecated 4.2.0 Deprecated in favor of the {@see 'customize_dynamic_setting_args'} filter. 2203 */ 2204 public function remove_prepreview_filters() { 2205 _deprecated_function( __METHOD__, '4.2.0', 'customize_dynamic_setting_args' ); 2206 } 2207 }
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