<?php

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/**

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* WordPress Customize Widgets classes

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*

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* @package WordPress

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* @subpackage Customize

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* @since 3.9.0

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*/

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/**

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* Customize Widgets class.

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*

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* Implements widget management in the Customizer.

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*

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* @since 3.9.0

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*

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* @see WP_Customize_Manager

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*/

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#[AllowDynamicProperties]

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final class WP_Customize_Widgets {

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/**

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* WP_Customize_Manager instance.

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*

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* @since 3.9.0

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* @var WP_Customize_Manager

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*/

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public $manager;

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/**

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* All id_bases for widgets defined in core.

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*

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* @since 3.9.0

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* @var array

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*/

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protected $core_widget_id_bases = array(

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'archives',

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'calendar',

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'categories',

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'custom_html',

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'links',

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'media_audio',

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'media_image',

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'media_video',

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'meta',

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'nav_menu',

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'pages',

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'recent-comments',

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'recent-posts',

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'rss',

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'search',

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'tag_cloud',

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'text',

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);

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/**

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* @since 3.9.0

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* @var array

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*/

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protected $rendered_sidebars = array();

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/**

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* @since 3.9.0

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* @var array

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*/

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protected $rendered_widgets = array();

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/**

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* @since 3.9.0

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* @var array

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*/

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protected $old_sidebars_widgets = array();

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/**

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* Mapping of widget ID base to whether it supports selective refresh.

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*

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* @since 4.5.0

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* @var array

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*/

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protected $selective_refreshable_widgets;

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/**

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* Mapping of setting type to setting ID pattern.

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*

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* @since 4.2.0

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* @var array

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*/

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protected $setting_id_patterns = array(

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'widget_instance' => '/^widget_(?P<id_base>.+?)(?:\[(?P<widget_number>\d+)\])?$/',

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'sidebar_widgets' => '/^sidebars_widgets\[(?P<sidebar_id>.+?)\]$/',

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);

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/**

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* Initial loader.

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*

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* @since 3.9.0

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*

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* @param WP_Customize_Manager $manager Customizer bootstrap instance.

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*/

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public function __construct( $manager ) {

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$this->manager = $manager;

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// See https://github.com/xwp/wp-customize-snapshots/blob/962586659688a5b1fd9ae93618b7ce2d4e7a421c/php/class-customize-snapshot-manager.php#L420-L449

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add_filter( 'customize_dynamic_setting_args', array( $this, 'filter_customize_dynamic_setting_args' ), 10, 2 );

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add_action( 'widgets_init', array( $this, 'register_settings' ), 95 );

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add_action( 'customize_register', array( $this, 'schedule_customize_register' ), 1 );

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// Skip remaining hooks when the user can't manage widgets anyway.

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if ( ! current_user_can( 'edit_theme_options' ) ) {

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return;

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}

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add_action( 'wp_loaded', array( $this, 'override_sidebars_widgets_for_theme_switch' ) );

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add_action( 'customize_controls_init', array( $this, 'customize_controls_init' ) );

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add_action( 'customize_controls_enqueue_scripts', array( $this, 'enqueue_scripts' ) );

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add_action( 'customize_controls_print_styles', array( $this, 'print_styles' ) );

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add_action( 'customize_controls_print_scripts', array( $this, 'print_scripts' ) );

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add_action( 'customize_controls_print_footer_scripts', array( $this, 'print_footer_scripts' ) );

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add_action( 'customize_controls_print_footer_scripts', array( $this, 'output_widget_control_templates' ) );

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add_action( 'customize_preview_init', array( $this, 'customize_preview_init' ) );

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add_filter( 'customize_refresh_nonces', array( $this, 'refresh_nonces' ) );

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add_filter( 'should_load_block_editor_scripts_and_styles', array( $this, 'should_load_block_editor_scripts_and_styles' ) );

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add_action( 'dynamic_sidebar', array( $this, 'tally_rendered_widgets' ) );

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add_filter( 'is_active_sidebar', array( $this, 'tally_sidebars_via_is_active_sidebar_calls' ), 10, 2 );

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add_filter( 'dynamic_sidebar_has_widgets', array( $this, 'tally_sidebars_via_dynamic_sidebar_calls' ), 10, 2 );

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// Selective Refresh.

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add_filter( 'customize_dynamic_partial_args', array( $this, 'customize_dynamic_partial_args' ), 10, 2 );

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add_action( 'customize_preview_init', array( $this, 'selective_refresh_init' ) );

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}

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/**

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* List whether each registered widget can be use selective refresh.

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*

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* If the theme does not support the customize-selective-refresh-widgets feature,

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* then this will always return an empty array.

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*

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* @since 4.5.0

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*

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* @global WP_Widget_Factory $wp_widget_factory

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*

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* @return array Mapping of id_base to support. If theme doesn't support

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* selective refresh, an empty array is returned.

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*/

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public function get_selective_refreshable_widgets() {

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global $wp_widget_factory;

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if ( ! current_theme_supports( 'customize-selective-refresh-widgets' ) ) {

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return array();

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}

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if ( ! isset( $this->selective_refreshable_widgets ) ) {

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$this->selective_refreshable_widgets = array();

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foreach ( $wp_widget_factory->widgets as $wp_widget ) {

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$this->selective_refreshable_widgets[ $wp_widget->id_base ] = ! empty( $wp_widget->widget_options['customize_selective_refresh'] );

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}

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}

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return $this->selective_refreshable_widgets;

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}

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/**

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* Determines if a widget supports selective refresh.

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*

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* @since 4.5.0

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*

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* @param string $id_base Widget ID Base.

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* @return bool Whether the widget can be selective refreshed.

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*/

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public function is_widget_selective_refreshable( $id_base ) {

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$selective_refreshable_widgets = $this->get_selective_refreshable_widgets();

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return ! empty( $selective_refreshable_widgets[ $id_base ] );

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}

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/**

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* Retrieves the widget setting type given a setting ID.

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*

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* @since 4.2.0

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*

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* @param string $setting_id Setting ID.

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* @return string|void Setting type.

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*/

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protected function get_setting_type( $setting_id ) {

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static $cache = array();

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if ( isset( $cache[ $setting_id ] ) ) {

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return $cache[ $setting_id ];

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}

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foreach ( $this->setting_id_patterns as $type => $pattern ) {

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if ( preg_match( $pattern, $setting_id ) ) {

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$cache[ $setting_id ] = $type;

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return $type;

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}

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}

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}

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/**

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* Inspects the incoming customized data for any widget settings, and dynamically adds

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* them up-front so widgets will be initialized properly.

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*

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* @since 4.2.0

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*/

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public function register_settings() {

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$widget_setting_ids = array();

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$incoming_setting_ids = array_keys( $this->manager->unsanitized_post_values() );

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foreach ( $incoming_setting_ids as $setting_id ) {

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if ( ! is_null( $this->get_setting_type( $setting_id ) ) ) {

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$widget_setting_ids[] = $setting_id;

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}

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}

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if ( $this->manager->doing_ajax( 'update-widget' ) && isset( $_REQUEST['widget-id'] ) ) {

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$widget_setting_ids[] = $this->get_setting_id( wp_unslash( $_REQUEST['widget-id'] ) );

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}

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$settings = $this->manager->add_dynamic_settings( array_unique( $widget_setting_ids ) );

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if ( $this->manager->settings_previewed() ) {

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foreach ( $settings as $setting ) {

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$setting->preview();

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}

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}

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}

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/**

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* Determines the arguments for a dynamically-created setting.

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*

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* @since 4.2.0

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*

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* @param false|array $args The arguments to the WP_Customize_Setting constructor.

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* @param string $setting_id ID for dynamic setting, usually coming from `$_POST['customized']`.

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* @return array|false Setting arguments, false otherwise.

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*/

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public function filter_customize_dynamic_setting_args( $args, $setting_id ) {

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if ( $this->get_setting_type( $setting_id ) ) {

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$args = $this->get_setting_args( $setting_id );

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}

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return $args;

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}

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/**

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* Retrieves an unslashed post value or return a default.

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*

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* @since 3.9.0

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*

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* @param string $name Post value.

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* @param mixed $default_value Default post value.

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* @return mixed Unslashed post value or default value.

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*/

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protected function get_post_value( $name, $default_value = null ) {

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if ( ! isset( $_POST[ $name ] ) ) {

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return $default_value;

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}

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return wp_unslash( $_POST[ $name ] );

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}

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/**

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* Override sidebars_widgets for theme switch.

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*

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* When switching a theme via the Customizer, supply any previously-configured

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* sidebars_widgets from the target theme as the initial sidebars_widgets

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* setting. Also store the old theme's existing settings so that they can

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* be passed along for storing in the sidebars_widgets theme_mod when the

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* theme gets switched.

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*

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* @since 3.9.0

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*

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* @global array $sidebars_widgets

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* @global array $_wp_sidebars_widgets

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*/

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public function override_sidebars_widgets_for_theme_switch() {

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global $sidebars_widgets;

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if ( $this->manager->doing_ajax() || $this->manager->is_theme_active() ) {

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return;

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}

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$this->old_sidebars_widgets = wp_get_sidebars_widgets();

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add_filter( 'customize_value_old_sidebars_widgets_data', array( $this, 'filter_customize_value_old_sidebars_widgets_data' ) );

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$this->manager->set_post_value( 'old_sidebars_widgets_data', $this->old_sidebars_widgets ); // Override any value cached in changeset.

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// retrieve_widgets() looks at the global $sidebars_widgets.

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$sidebars_widgets = $this->old_sidebars_widgets;

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$sidebars_widgets = retrieve_widgets( 'customize' );

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add_filter( 'option_sidebars_widgets', array( $this, 'filter_option_sidebars_widgets_for_theme_switch' ), 1 );

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// Reset global cache var used by wp_get_sidebars_widgets().

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unset( $GLOBALS['_wp_sidebars_widgets'] );

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}

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/**

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* Filters old_sidebars_widgets_data Customizer setting.

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*

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* When switching themes, filter the Customizer setting old_sidebars_widgets_data

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* to supply initial $sidebars_widgets before they were overridden by retrieve_widgets().

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* The value for old_sidebars_widgets_data gets set in the old theme's sidebars_widgets

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* theme_mod.

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*

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* @since 3.9.0

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*

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* @see WP_Customize_Widgets::handle_theme_switch()

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*

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* @param array $old_sidebars_widgets

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* @return array

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*/

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public function filter_customize_value_old_sidebars_widgets_data( $old_sidebars_widgets ) {

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return $this->old_sidebars_widgets;

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}

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/**

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* Filters sidebars_widgets option for theme switch.

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*

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* When switching themes, the retrieve_widgets() function is run when the Customizer initializes,

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* and then the new sidebars_widgets here get supplied as the default value for the sidebars_widgets

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* option.

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*

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* @since 3.9.0

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*

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* @see WP_Customize_Widgets::handle_theme_switch()

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* @global array $sidebars_widgets

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*

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* @param array $sidebars_widgets

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* @return array

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*/

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public function filter_option_sidebars_widgets_for_theme_switch( $sidebars_widgets ) {

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$sidebars_widgets = $GLOBALS['sidebars_widgets'];

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$sidebars_widgets['array_version'] = 3;

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return $sidebars_widgets;

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}

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/**

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* Ensures all widgets get loaded into the Customizer.

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*

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* Note: these actions are also fired in wp_ajax_update_widget().

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*

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* @since 3.9.0

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*/

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public function customize_controls_init() {

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/** This action is documented in wp-admin/includes/ajax-actions.php */

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do_action( 'load-widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

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/** This action is documented in wp-admin/includes/ajax-actions.php */

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do_action( 'widgets.php' ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

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/** This action is documented in wp-admin/widgets.php */

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do_action( 'sidebar_admin_setup' );

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}

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/**

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* Ensures widgets are available for all types of previews.

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*

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* When in preview, hook to {@see 'customize_register'} for settings after WordPress is loaded

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* so that all filters have been initialized (e.g. Widget Visibility).

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*

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* @since 3.9.0

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*/

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public function schedule_customize_register() {

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if ( is_admin() ) {

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$this->customize_register();

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} else {

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add_action( 'wp', array( $this, 'customize_register' ) );

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}

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}

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/**

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* Registers Customizer settings and controls for all sidebars and widgets.

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*

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* @since 3.9.0

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*

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* @global array $wp_registered_widgets

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* @global array $wp_registered_widget_controls

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* @global array $wp_registered_sidebars

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*/

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public function customize_register() {

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global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_sidebars;

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$use_widgets_block_editor = wp_use_widgets_block_editor();

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add_filter( 'sidebars_widgets', array( $this, 'preview_sidebars_widgets' ), 1 );

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$sidebars_widgets = array_merge(

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array( 'wp_inactive_widgets' => array() ),

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array_fill_keys( array_keys( $wp_registered_sidebars ), array() ),

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wp_get_sidebars_widgets()

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);

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$new_setting_ids = array();

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/*

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* Register a setting for all widgets, including those which are active,

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* inactive, and orphaned since a widget may get suppressed from a sidebar

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* via a plugin (like Widget Visibility).

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*/

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foreach ( array_keys( $wp_registered_widgets ) as $widget_id ) {

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$setting_id = $this->get_setting_id( $widget_id );

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$setting_args = $this->get_setting_args( $setting_id );

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if ( ! $this->manager->get_setting( $setting_id ) ) {

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$this->manager->add_setting( $setting_id, $setting_args );

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}

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$new_setting_ids[] = $setting_id;

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}

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/*

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* Add a setting which will be supplied for the theme's sidebars_widgets

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* theme_mod when the theme is switched.

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*/

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if ( ! $this->manager->is_theme_active() ) {

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$setting_id = 'old_sidebars_widgets_data';

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$setting_args = $this->get_setting_args(

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$setting_id,

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array(

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'type' => 'global_variable',

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'dirty' => true,

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)

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);

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$this->manager->add_setting( $setting_id, $setting_args );

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}

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$this->manager->add_panel(

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'widgets',

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array(

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'type' => 'widgets',

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'title' => __( 'Widgets' ),

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'description' => __( 'Widgets are independent sections of content that can be placed into widgetized areas provided by your theme (commonly called sidebars).' ),

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'priority' => 110,

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'active_callback' => array( $this, 'is_panel_active' ),

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'auto_expand_sole_section' => true,

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'theme_supports' => 'widgets',

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)

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);

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foreach ( $sidebars_widgets as $sidebar_id => $sidebar_widget_ids ) {

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if ( empty( $sidebar_widget_ids ) ) {

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$sidebar_widget_ids = array();

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}

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$is_registered_sidebar = is_registered_sidebar( $sidebar_id );

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$is_inactive_widgets = ( 'wp_inactive_widgets' === $sidebar_id );

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$is_active_sidebar = ( $is_registered_sidebar && ! $is_inactive_widgets );

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// Add setting for managing the sidebar's widgets.

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if ( $is_registered_sidebar || $is_inactive_widgets ) {

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$setting_id = sprintf( 'sidebars_widgets[%s]', $sidebar_id );

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$setting_args = $this->get_setting_args( $setting_id );

[439] Fix | Delete

if ( ! $this->manager->get_setting( $setting_id ) ) {

[440] Fix | Delete

if ( ! $this->manager->is_theme_active() ) {

[441] Fix | Delete

$setting_args['dirty'] = true;

[442] Fix | Delete

}

[443] Fix | Delete

$this->manager->add_setting( $setting_id, $setting_args );

[444] Fix | Delete

}

[445] Fix | Delete

$new_setting_ids[] = $setting_id;

[446] Fix | Delete

[447] Fix | Delete

// Add section to contain controls.

[448] Fix | Delete

$section_id = sprintf( 'sidebar-widgets-%s', $sidebar_id );

[449] Fix | Delete

if ( $is_active_sidebar ) {

[450] Fix | Delete

[451] Fix | Delete

$section_args = array(

[452] Fix | Delete

'title' => $wp_registered_sidebars[ $sidebar_id ]['name'],

[453] Fix | Delete

'priority' => array_search( $sidebar_id, array_keys( $wp_registered_sidebars ), true ),

[454] Fix | Delete

'panel' => 'widgets',

[455] Fix | Delete

'sidebar_id' => $sidebar_id,

[456] Fix | Delete

);

[457] Fix | Delete

[458] Fix | Delete

if ( $use_widgets_block_editor ) {

[459] Fix | Delete

$section_args['description'] = '';

[460] Fix | Delete

} else {

[461] Fix | Delete

$section_args['description'] = $wp_registered_sidebars[ $sidebar_id ]['description'];

[462] Fix | Delete

}

[463] Fix | Delete

[464] Fix | Delete

/**

[465] Fix | Delete

* Filters Customizer widget section arguments for a given sidebar.

[466] Fix | Delete

*

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* @since 3.9.0

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*

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* @param array $section_args Array of Customizer widget section arguments.

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* @param string $section_id Customizer section ID.

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* @param int|string $sidebar_id Sidebar ID.

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*/

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$section_args = apply_filters( 'customizer_widgets_section_args', $section_args, $section_id, $sidebar_id );

[474] Fix | Delete

[475] Fix | Delete

$section = new WP_Customize_Sidebar_Section( $this->manager, $section_id, $section_args );

[476] Fix | Delete

$this->manager->add_section( $section );

[477] Fix | Delete

[478] Fix | Delete

if ( $use_widgets_block_editor ) {

[479] Fix | Delete

$control = new WP_Sidebar_Block_Editor_Control(

[480] Fix | Delete

$this->manager,

[481] Fix | Delete

$setting_id,

[482] Fix | Delete

array(

[483] Fix | Delete

'section' => $section_id,

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'sidebar_id' => $sidebar_id,

[485] Fix | Delete

'label' => $section_args['title'],

[486] Fix | Delete

'description' => $section_args['description'],

[487] Fix | Delete

)

[488] Fix | Delete

);

[489] Fix | Delete

} else {

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$control = new WP_Widget_Area_Customize_Control(

[491] Fix | Delete

$this->manager,

[492] Fix | Delete

$setting_id,

[493] Fix | Delete

array(

[494] Fix | Delete

'section' => $section_id,

[495] Fix | Delete

'sidebar_id' => $sidebar_id,

[496] Fix | Delete

'priority' => count( $sidebar_widget_ids ), // place 'Add Widget' and 'Reorder' buttons at end.

[497] Fix | Delete

)

[498] Fix | Delete

);

[499] Fix | Delete