<?php
/**
 * Core Widgets API
 *
 * This API is used for creating dynamic sidebar without hardcoding functionality into
 * themes
 *
 * Includes both internal ClassicPress routines and theme-use routines.
 *
 * This functionality was found in a plugin before the WordPress 2.2 release, which
 * included it in the core from that point on.
 *
 * @link https://wordpress.org/documentation/article/manage-wordpress-widgets/
 * @link https://developer.wordpress.org/themes/functionality/widgets/
 *
 * @package ClassicPress
 * @subpackage Widgets
 * @since 2.2.0
 */

//
// Global Variables.
//

/** @ignore */
global $wp_registered_sidebars, $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates;

/**
 * Stores the sidebars, since many themes can have more than one.
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 * @since 2.2.0
 */
$wp_registered_sidebars = array();

/**
 * Stores the registered widgets.
 *
 * @global array $wp_registered_widgets
 * @since 2.2.0
 */
$wp_registered_widgets = array();

/**
 * Stores the registered widget controls (options).
 *
 * @global array $wp_registered_widget_controls
 * @since 2.2.0
 */
$wp_registered_widget_controls = array();
/**
 * @global array $wp_registered_widget_updates
 */
$wp_registered_widget_updates = array();

/**
 * Private
 *
 * @global array $_wp_sidebars_widgets
 */
$_wp_sidebars_widgets = array();

/**
 * Private
 *
 * @global array $_wp_deprecated_widgets_callbacks
 */
$GLOBALS['_wp_deprecated_widgets_callbacks'] = array(
	'wp_widget_pages',
	'wp_widget_pages_control',
	'wp_widget_calendar',
	'wp_widget_calendar_control',
	'wp_widget_archives',
	'wp_widget_archives_control',
	'wp_widget_links',
	'wp_widget_meta',
	'wp_widget_meta_control',
	'wp_widget_search',
	'wp_widget_recent_entries',
	'wp_widget_recent_entries_control',
	'wp_widget_tag_cloud',
	'wp_widget_tag_cloud_control',
	'wp_widget_categories',
	'wp_widget_categories_control',
	'wp_widget_text',
	'wp_widget_text_control',
	'wp_widget_rss',
	'wp_widget_rss_control',
	'wp_widget_recent_comments',
	'wp_widget_recent_comments_control',
);

//
// Template tags & API functions.
//

/**
 * Register a widget
 *
 * Registers a WP_Widget widget
 *
 * @since 2.8.0
 * @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
 *              instead of simply a `WP_Widget` subclass name.
 *
 * @see WP_Widget
 *
 * @global WP_Widget_Factory $wp_widget_factory
 *
 * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
 */
function register_widget( $widget ) {
	global $wp_widget_factory;

	$wp_widget_factory->register( $widget );
}

/**
 * Unregisters a widget.
 *
 * Unregisters a WP_Widget widget. Useful for un-registering default widgets.
 * Run within a function hooked to the {@see 'widgets_init'} action.
 *
 * @since 2.8.0
 * @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
 *              instead of simply a `WP_Widget` subclass name.
 *
 * @see WP_Widget
 *
 * @global WP_Widget_Factory $wp_widget_factory
 *
 * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
 */
function unregister_widget( $widget ) {
	global $wp_widget_factory;

	$wp_widget_factory->unregister( $widget );
}

/**
 * Creates multiple sidebars.
 *
 * If you wanted to quickly create multiple sidebars for a theme or internally.
 * This function will allow you to do so. If you don't pass the 'name' and/or
 * 'id' in `$args`, then they will be built for you.
 *
 * @since 2.2.0
 *
 * @see register_sidebar() The second parameter is documented by register_sidebar() and is the same here.
 *
 * @global array $wp_registered_sidebars The new sidebars are stored in this array by sidebar ID.
 *
 * @param int          $number Optional. Number of sidebars to create. Default 1.
 * @param array|string $args {
 *     Optional. Array or string of arguments for building a sidebar.
 *
 *     @type string $id   The base string of the unique identifier for each sidebar. If provided, and multiple
 *                        sidebars are being defined, the ID will have "-2" appended, and so on.
 *                        Default 'sidebar-' followed by the number the sidebar creation is currently at.
 *     @type string $name The name or title for the sidebars displayed in the admin dashboard. If registering
 *                        more than one sidebar, include '%d' in the string as a placeholder for the uniquely
 *                        assigned number for each sidebar.
 *                        Default 'Sidebar' for the first sidebar, otherwise 'Sidebar %d'.
 * }
 */
function register_sidebars( $number = 1, $args = array() ) {
	global $wp_registered_sidebars;
	$number = (int) $number;

	if ( is_string( $args ) ) {
		parse_str( $args, $args );
	}

	for ( $i = 1; $i <= $number; $i++ ) {
		$_args = $args;

		if ( $number > 1 ) {
			if ( isset( $args['name'] ) ) {
				$_args['name'] = sprintf( $args['name'], $i );
			} else {
				/* translators: %d: Sidebar number. */
				$_args['name'] = sprintf( __( 'Sidebar %d' ), $i );
			}
		} else {
			$_args['name'] = isset( $args['name'] ) ? $args['name'] : __( 'Sidebar' );
		}

		// Custom specified ID's are suffixed if they exist already.
		// Automatically generated sidebar names need to be suffixed regardless starting at -0.
		if ( isset( $args['id'] ) ) {
			$_args['id'] = $args['id'];
			$n           = 2; // Start at -2 for conflicting custom IDs.
			while ( is_registered_sidebar( $_args['id'] ) ) {
				$_args['id'] = $args['id'] . '-' . $n++;
			}
		} else {
			$n = count( $wp_registered_sidebars );
			do {
				$_args['id'] = 'sidebar-' . ++$n;
			} while ( is_registered_sidebar( $_args['id'] ) );
		}
		register_sidebar( $_args );
	}
}

/**
 * Builds the definition for a single sidebar and returns the ID.
 *
 * Accepts either a string or an array and then parses that against a set
 * of default arguments for the new sidebar. WordPress will automatically
 * generate a sidebar ID and name based on the current number of registered
 * sidebars if those arguments are not included.
 *
 * When allowing for automatic generation of the name and ID parameters, keep
 * in mind that the incrementor for your sidebar can change over time depending
 * on what other plugins and themes are installed.
 *
 * If theme support for 'widgets' has not yet been added when this function is
 * called, it will be automatically enabled through the use of add_theme_support()
 *
 * @since 2.2.0
 * @since 5.6.0 Added the `before_sidebar` and `after_sidebar` arguments.
 * @since 5.9.0 Added the `show_in_rest` argument.
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 *
 * @param array|string $args {
 *     Optional. Array or string of arguments for the sidebar being registered.
 *
 *     @type string $name           The name or title of the sidebar displayed in the Widgets
 *                                  interface. Default 'Sidebar $instance'.
 *     @type string $id             The unique identifier by which the sidebar will be called.
 *                                  Default 'sidebar-$instance'.
 *     @type string $description    Description of the sidebar, displayed in the Widgets interface.
 *                                  Default empty string.
 *     @type string $class          Extra CSS class to assign to the sidebar in the Widgets interface.
 *                                  Default empty.
 *     @type string $before_widget  HTML content to prepend to each widget's HTML output when assigned
 *                                  to this sidebar. Receives the widget's ID attribute as `%1$s`
 *                                  and class name as `%2$s`. Default is an opening list item element.
 *     @type string $after_widget   HTML content to append to each widget's HTML output when assigned
 *                                  to this sidebar. Default is a closing list item element.
 *     @type string $before_title   HTML content to prepend to the sidebar title when displayed.
 *                                  Default is an opening h2 element.
 *     @type string $after_title    HTML content to append to the sidebar title when displayed.
 *                                  Default is a closing h2 element.
 *     @type string $before_sidebar HTML content to prepend to the sidebar when displayed.
 *                                  Receives the `$id` argument as `%1$s` and `$class` as `%2$s`.
 *                                  Outputs after the {@see 'dynamic_sidebar_before'} action.
 *                                  Default empty string.
 *     @type string $after_sidebar  HTML content to append to the sidebar when displayed.
 *                                  Outputs before the {@see 'dynamic_sidebar_after'} action.
 *                                  Default empty string.
 *     @type bool $show_in_rest     Whether to show this sidebar publicly in the REST API.
 *                                  Defaults to only showing the sidebar to administrator users.
 * }
 * @return string Sidebar ID added to $wp_registered_sidebars global.
 */
function register_sidebar( $args = array() ) {
	global $wp_registered_sidebars;

	$i = count( $wp_registered_sidebars ) + 1;

	$id_is_empty = empty( $args['id'] );

	$defaults = array(
		/* translators: %d: Sidebar number. */
		'name'           => sprintf( __( 'Sidebar %d' ), $i ),
		'id'             => "sidebar-$i",
		'description'    => '',
		'class'          => '',
		'before_widget'  => '<li id="%1$s" class="widget %2$s">',
		'after_widget'   => "</li>\n",
		'before_title'   => '<h2 class="widgettitle">',
		'after_title'    => "</h2>\n",
		'before_sidebar' => '',
		'after_sidebar'  => '',
		'show_in_rest'   => false,
	);

	/**
	 * Filters the sidebar default arguments.
	 *
	 * @since 5.3.0
	 *
	 * @see register_sidebar()
	 *
	 * @param array $defaults The default sidebar arguments.
	 */
	$sidebar = wp_parse_args( $args, apply_filters( 'register_sidebar_defaults', $defaults ) );

	if ( $id_is_empty ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: 1: The 'id' argument, 2: Sidebar name, 3: Recommended 'id' value. */
				__( 'No %1$s was set in the arguments array for the "%2$s" sidebar. Defaulting to "%3$s". Manually set the %1$s to "%3$s" to silence this notice and keep existing sidebar content.' ),
				'<code>id</code>',
				$sidebar['name'],
				$sidebar['id']
			),
			'4.2.0'
		);
	}

	$wp_registered_sidebars[ $sidebar['id'] ] = $sidebar;

	add_theme_support( 'widgets' );

	/**
	 * Fires once a sidebar has been registered.
	 *
	 * @since 3.0.0
	 *
	 * @param array $sidebar Parsed arguments for the registered sidebar.
	 */
	do_action( 'register_sidebar', $sidebar );

	return $sidebar['id'];
}

/**
 * Removes a sidebar from the list.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 *
 * @param string|int $sidebar_id The ID of the sidebar when it was registered.
 */
function unregister_sidebar( $sidebar_id ) {
	global $wp_registered_sidebars;

	unset( $wp_registered_sidebars[ $sidebar_id ] );
}

/**
 * Checks if a sidebar is registered.
 *
 * @since 4.4.0
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 *
 * @param string|int $sidebar_id The ID of the sidebar when it was registered.
 * @return bool True if the sidebar is registered, false otherwise.
 */
function is_registered_sidebar( $sidebar_id ) {
	global $wp_registered_sidebars;

	return isset( $wp_registered_sidebars[ $sidebar_id ] );
}

/**
 * Register an instance of a widget.
 *
 * The default widget option is 'classname' that can be overridden.
 *
 * The function can also be used to un-register widgets when `$output_callback`
 * parameter is an empty string.
 *
 * @since 2.2.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 * @since 5.8.0 Added show_instance_in_rest option.
 *
 * @global array $wp_registered_widgets            Uses stored registered widgets.
 * @global array $wp_registered_widget_controls    Stores the registered widget controls (options).
 * @global array $wp_registered_widget_updates
 * @global array $_wp_deprecated_widgets_callbacks
 *
 * @param int|string $id              Widget ID.
 * @param string     $name            Widget display title.
 * @param callable   $output_callback Run when widget is called.
 * @param array      $options {
 *     Optional. An array of supplementary widget options for the instance.
 *
 *     @type string $classname             Class name for the widget's HTML container. Default is a shortened
 *                                         version of the output callback name.
 *     @type string $description           Widget description for display in the widget administration
 *                                         panel and/or theme.
 *     @type bool   $show_instance_in_rest Whether to show the widget's instance settings in the REST API.
 *                                         Only available for WP_Widget based widgets.
 * }
 * @param mixed      ...$params       Optional additional parameters to pass to the callback function when it's called.
 */
function wp_register_sidebar_widget( $id, $name, $output_callback, $options = array(), ...$params ) {
	global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates, $_wp_deprecated_widgets_callbacks;

	$id = strtolower( $id );

	if ( empty( $output_callback ) ) {
		unset( $wp_registered_widgets[ $id ] );
		return;
	}

	$id_base = _get_widget_id_base( $id );
	if ( in_array( $output_callback, $_wp_deprecated_widgets_callbacks, true ) && ! is_callable( $output_callback ) ) {
		unset( $wp_registered_widget_controls[ $id ] );
		unset( $wp_registered_widget_updates[ $id_base ] );
		return;
	}

	$defaults = array( 'classname' => $output_callback );
	$options  = wp_parse_args( $options, $defaults );
	$widget   = array(
		'name'     => $name,
		'id'       => $id,
		'callback' => $output_callback,
		'params'   => $params,
	);
	$widget   = array_merge( $widget, $options );

	if ( is_callable( $output_callback ) && ( ! isset( $wp_registered_widgets[ $id ] ) || did_action( 'widgets_init' ) ) ) {

		/**
		 * Fires once for each registered widget.
		 *
		 * @since 3.0.0
		 *
		 * @param array $widget An array of default widget arguments.
		 */
		do_action( 'wp_register_sidebar_widget', $widget );
		$wp_registered_widgets[ $id ] = $widget;
	}
}

/**
 * Retrieve description for widget.
 *
 * When registering widgets, the options can also include 'description' that
 * describes the widget for display on the widget administration panel or
 * in the theme.
 *
 * @since 2.5.0
 *
 * @global array $wp_registered_widgets
 *
 * @param int|string $id Widget ID.
 * @return string|void Widget description, if available.
 */
function wp_widget_description( $id ) {
	if ( ! is_scalar( $id ) ) {
		return;
	}

	global $wp_registered_widgets;

	if ( isset( $wp_registered_widgets[ $id ]['description'] ) ) {
		return esc_html( $wp_registered_widgets[ $id ]['description'] );
	}
}

/**
 * Retrieve description for a sidebar.
 *
 * When registering sidebars a 'description' parameter can be included that
 * describes the sidebar for display on the widget administration panel.
 *
 * @since 2.9.0
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 *
 * @param string $id sidebar ID.
 * @return string|void Sidebar description, if available.
 */
function wp_sidebar_description( $id ) {
	if ( ! is_scalar( $id ) ) {
		return;
	}

	global $wp_registered_sidebars;

	if ( isset( $wp_registered_sidebars[ $id ]['description'] ) ) {
		return wp_kses( $wp_registered_sidebars[ $id ]['description'], 'sidebar_description' );
	}
}

/**
 * Remove widget from sidebar.
 *
 * @since 2.2.0
 *
 * @param int|string $id Widget ID.
 */
function wp_unregister_sidebar_widget( $id ) {

	/**
	 * Fires just before a widget is removed from a sidebar.
	 *
	 * @since 3.0.0
	 *
	 * @param int|string $id The widget ID.
	 */
	do_action( 'wp_unregister_sidebar_widget', $id );

	wp_register_sidebar_widget( $id, '', '' );
	wp_unregister_widget_control( $id );
}

/**
 * Registers widget control callback for customizing options.
 *
 * @since 2.2.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 *
 * @global array $wp_registered_widget_controls
 * @global array $wp_registered_widget_updates
 * @global array $wp_registered_widgets
 * @global array $_wp_deprecated_widgets_callbacks
 *
 * @param int|string $id               Sidebar ID.
 * @param string     $name             Sidebar display name.
 * @param callable   $control_callback Run when sidebar is displayed.
 * @param array      $options {
 *     Optional. Array or string of control options. Default empty array.
 *
 *     @type int        $height  Never used. Default 200.
 *     @type int        $width   Width of the fully expanded control form (but try hard to use the default width).
 *                               Default 250.
 *     @type int|string $id_base Required for multi-widgets, i.e widgets that allow multiple instances such as the
 *                               text widget. The widget ID will end up looking like `{$id_base}-{$unique_number}`.
 * }
 * @param mixed      ...$params        Optional additional parameters to pass to the callback function when it's called.
 */
function wp_register_widget_control( $id, $name, $control_callback, $options = array(), ...$params ) {
	global $wp_registered_widget_controls, $wp_registered_widget_updates, $wp_registered_widgets, $_wp_deprecated_widgets_callbacks;

	$id      = strtolower( $id );
	$id_base = _get_widget_id_base( $id );

	if ( empty( $control_callback ) ) {
		unset( $wp_registered_widget_controls[ $id ] );
		unset( $wp_registered_widget_updates[ $id_base ] );
		return;
	}

	if ( in_array( $control_callback, $_wp_deprecated_widgets_callbacks, true ) && ! is_callable( $control_callback ) ) {
		unset( $wp_registered_widgets[ $id ] );
		return;
	}

	if ( isset( $wp_registered_widget_controls[ $id ] ) && ! did_action( 'widgets_init' ) ) {
		return;
	}

	$defaults          = array(
		'width'  => 250,
		'height' => 200,
	); // Height is never used.
	$options           = wp_parse_args( $options, $defaults );
	$options['width']  = (int) $options['width'];
	$options['height'] = (int) $options['height'];

	$widget = array(
		'name'     => $name,
		'id'       => $id,
		'callback' => $control_callback,
		'params'   => $params,
	);
	$widget = array_merge( $widget, $options );

	$wp_registered_widget_controls[ $id ] = $widget;

	if ( isset( $wp_registered_widget_updates[ $id_base ] ) ) {
		return;
	}

	if ( isset( $widget['params'][0]['number'] ) ) {
		$widget['params'][0]['number'] = -1;
	}

	unset( $widget['width'], $widget['height'], $widget['name'], $widget['id'] );
	$wp_registered_widget_updates[ $id_base ] = $widget;
}

/**
 * Registers the update callback for a widget.
 *
 * @since 2.8.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 *
 * @global array $wp_registered_widget_updates
 *
 * @param string   $id_base         The base ID of a widget created by extending WP_Widget.
 * @param callable $update_callback Update callback method for the widget.
 * @param array    $options         Optional. Widget control options. See wp_register_widget_control().
 *                                  Default empty array.
 * @param mixed    ...$params       Optional additional parameters to pass to the callback function when it's called.
 */
function _register_widget_update_callback( $id_base, $update_callback, $options = array(), ...$params ) {
	global $wp_registered_widget_updates;

	if ( isset( $wp_registered_widget_updates[ $id_base ] ) ) {
		if ( empty( $update_callback ) ) {
			unset( $wp_registered_widget_updates[ $id_base ] );
		}
		return;
	}

	$widget = array(
		'callback' => $update_callback,
		'params'   => $params,
	);

	$widget                                   = array_merge( $widget, $options );
	$wp_registered_widget_updates[ $id_base ] = $widget;
}

/**
 * Registers the form callback for a widget.
 *
 * @since 2.8.0
 * @since 5.3.0 Formalized the existing and already documented `...$params` parameter
 *              by adding it to the function signature.
 *
 * @global array $wp_registered_widget_controls
 *
 * @param int|string $id            Widget ID.
 * @param string     $name          Name attribute for the widget.
 * @param callable   $form_callback Form callback.
 * @param array      $options       Optional. Widget control options. See wp_register_widget_control().
 *                                  Default empty array.
 * @param mixed      ...$params     Optional additional parameters to pass to the callback function when it's called.
 */

function _register_widget_form_callback( $id, $name, $form_callback, $options = array(), ...$params ) {
	global $wp_registered_widget_controls;

	$id = strtolower( $id );

	if ( empty( $form_callback ) ) {
		unset( $wp_registered_widget_controls[ $id ] );
		return;
	}

	if ( isset( $wp_registered_widget_controls[ $id ] ) && ! did_action( 'widgets_init' ) ) {
		return;
	}

	$defaults          = array(
		'width'  => 250,
		'height' => 200,
	);
	$options           = wp_parse_args( $options, $defaults );
	$options['width']  = (int) $options['width'];
	$options['height'] = (int) $options['height'];

	$widget = array(
		'name'     => $name,
		'id'       => $id,
		'callback' => $form_callback,
		'params'   => $params,
	);
	$widget = array_merge( $widget, $options );

	$wp_registered_widget_controls[ $id ] = $widget;
}

/**
 * Remove control callback for widget.
 *
 * @since 2.2.0
 *
 * @param int|string $id Widget ID.
 */
function wp_unregister_widget_control( $id ) {
	wp_register_widget_control( $id, '', '' );
}

/**
 * Display dynamic sidebar.
 *
 * By default this displays the default sidebar or 'sidebar-1'. If your theme specifies the 'id' or
 * 'name' parameter for its registered sidebars you can pass an ID or name as the $index parameter.
 * Otherwise, you can pass in a numerical index to display the sidebar at that index.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 * @global array $wp_registered_widgets  Registered widgets.
 *
 * @param int|string $index Optional. Index, name or ID of dynamic sidebar. Default 1.
 * @return bool True, if widget sidebar was found and called. False if not found or not called.
 */
function dynamic_sidebar( $index = 1 ) {
	global $wp_registered_sidebars, $wp_registered_widgets;

	if ( is_int( $index ) ) {
		$index = "sidebar-$index";
	} else {
		$index = sanitize_title( $index );
		foreach ( (array) $wp_registered_sidebars as $key => $value ) {
			if ( sanitize_title( $value['name'] ) === $index ) {
				$index = $key;
				break;
			}
		}
	}

	$sidebars_widgets = wp_get_sidebars_widgets();
	if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) {
		/** This action is documented in wp-includes/widget.php */
		do_action( 'dynamic_sidebar_before', $index, false );
		/** This action is documented in wp-includes/widget.php */
		do_action( 'dynamic_sidebar_after', $index, false );
		/** This filter is documented in wp-includes/widget.php */
		return apply_filters( 'dynamic_sidebar_has_widgets', false, $index );
	}

	$sidebar = $wp_registered_sidebars[ $index ];

	$sidebar['before_sidebar'] = sprintf( $sidebar['before_sidebar'], $sidebar['id'], $sidebar['class'] );

	/**
	 * Fires before widgets are rendered in a dynamic sidebar.
	 *
	 * Note: The action also fires for empty sidebars, and on both the front end
	 * and back end, including the Inactive Widgets sidebar on the Widgets screen.
	 *
	 * @since 3.9.0
	 *
	 * @param int|string $index       Index, name, or ID of the dynamic sidebar.
	 * @param bool       $has_widgets Whether the sidebar is populated with widgets.
	 *                                Default true.
	 */
	do_action( 'dynamic_sidebar_before', $index, true );

	if ( ! is_admin() && ! empty( $sidebar['before_sidebar'] ) ) {
		echo $sidebar['before_sidebar'];
	}

	$did_one = false;
	foreach ( (array) $sidebars_widgets[ $index ] as $id ) {

		if ( ! isset( $wp_registered_widgets[ $id ] ) ) {
			continue;
		}

		$params = array_merge(
			array(
				array_merge(
					$sidebar,
					array(
						'widget_id'   => $id,
						'widget_name' => $wp_registered_widgets[ $id ]['name'],
					)
				),
			),
			(array) $wp_registered_widgets[ $id ]['params']
		);

		// Substitute HTML `id` and `class` attributes into `before_widget`.
		$classname_ = '';
		foreach ( (array) $wp_registered_widgets[ $id ]['classname'] as $cn ) {
			if ( is_string( $cn ) ) {
				$classname_ .= '_' . $cn;
			} elseif ( is_object( $cn ) ) {
				$classname_ .= '_' . get_class( $cn );
			}
		}
		$classname_ = ltrim( $classname_, '_' );

		$params[0]['before_widget'] = sprintf(
			$params[0]['before_widget'],
			str_replace( '\\', '_', $id ),
			$classname_
		);

		/**
		 * Filters the parameters passed to a widget's display callback.
		 *
		 * Note: The filter is evaluated on both the front end and back end,
		 * including for the Inactive Widgets sidebar on the Widgets screen.
		 *
		 * @since 2.5.0
		 *
		 * @see register_sidebar()
		 *
		 * @param array $params {
		 *     @type array $args  {
		 *         An array of widget display arguments.
		 *
		 *         @type string $name          Name of the sidebar the widget is assigned to.
		 *         @type string $id            ID of the sidebar the widget is assigned to.
		 *         @type string $description   The sidebar description.
		 *         @type string $class         CSS class applied to the sidebar container.
		 *         @type string $before_widget HTML markup to prepend to each widget in the sidebar.
		 *         @type string $after_widget  HTML markup to append to each widget in the sidebar.
		 *         @type string $before_title  HTML markup to prepend to the widget title when displayed.
		 *         @type string $after_title   HTML markup to append to the widget title when displayed.
		 *         @type string $widget_id     ID of the widget.
		 *         @type string $widget_name   Name of the widget.
		 *     }
		 *     @type array $widget_args {
		 *         An array of multi-widget arguments.
		 *
		 *         @type int $number Number increment used for multiples of the same widget.
		 *     }
		 * }
		 */
		$params = apply_filters( 'dynamic_sidebar_params', $params );

		$callback = $wp_registered_widgets[ $id ]['callback'];

		/**
		 * Fires before a widget's display callback is called.
		 *
		 * Note: The action fires on both the front end and back end, including
		 * for widgets in the Inactive Widgets sidebar on the Widgets screen.
		 *
		 * The action is not fired for empty sidebars.
		 *
		 * @since 3.0.0
		 *
		 * @param array $widget {
		 *     An associative array of widget arguments.
		 *
		 *     @type string   $name        Name of the widget.
		 *     @type string   $id          Widget ID.
		 *     @type callable $callback    When the hook is fired on the front end, `$callback` is an array
		 *                                 containing the widget object. Fired on the back end, `$callback`
		 *                                 is 'wp_widget_control', see `$_callback`.
		 *     @type array    $params      An associative array of multi-widget arguments.
		 *     @type string   $classname   CSS class applied to the widget container.
		 *     @type string   $description The widget description.
		 *     @type array    $_callback   When the hook is fired on the back end, `$_callback` is populated
		 *                                 with an array containing the widget object, see `$callback`.
		 * }
		 */
		do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] );

		if ( is_callable( $callback ) ) {
			call_user_func_array( $callback, $params );
			$did_one = true;
		}
	}

	if ( ! is_admin() && ! empty( $sidebar['after_sidebar'] ) ) {
		echo $sidebar['after_sidebar'];
	}

	/**
	 * Fires after widgets are rendered in a dynamic sidebar.
	 *
	 * Note: The action also fires for empty sidebars, and on both the front end
	 * and back end, including the Inactive Widgets sidebar on the Widgets screen.
	 *
	 * @since 3.9.0
	 *
	 * @param int|string $index       Index, name, or ID of the dynamic sidebar.
	 * @param bool       $has_widgets Whether the sidebar is populated with widgets.
	 *                                Default true.
	 */
	do_action( 'dynamic_sidebar_after', $index, true );

	/**
	 * Filters whether a sidebar has widgets.
	 *
	 * Note: The filter is also evaluated for empty sidebars, and on both the front end
	 * and back end, including the Inactive Widgets sidebar on the Widgets screen.
	 *
	 * @since 3.9.0
	 *
	 * @param bool       $did_one Whether at least one widget was rendered in the sidebar.
	 *                            Default false.
	 * @param int|string $index   Index, name, or ID of the dynamic sidebar.
	 */
	return apply_filters( 'dynamic_sidebar_has_widgets', $did_one, $index );
}

/**
 * Determines whether a given widget is displayed on the front end.
 *
 * Either $callback or $id_base can be used
 * $id_base is the first argument when extending WP_Widget class
 * Without the optional $widget_id parameter, returns the ID of the first sidebar
 * in which the first instance of the widget with the given callback or $id_base is found.
 * With the $widget_id parameter, returns the ID of the sidebar where
 * the widget with that callback/$id_base AND that ID is found.
 *
 * NOTE: $widget_id and $id_base are the same for single widgets. To be effective
 * this function has to run after widgets have initialized, at action {@see 'init'} or later.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_widgets
 *
 * @param callable|false $callback      Optional. Widget callback to check. Default false.
 * @param string|false   $widget_id     Optional. Widget ID. Optional, but needed for checking.
 *                                      Default false.
 * @param string|false   $id_base       Optional. The base ID of a widget created by extending WP_Widget.
 *                                      Default false.
 * @param bool           $skip_inactive Optional. Whether to check in 'wp_inactive_widgets'.
 *                                      Default true.
 * @return string|false ID of the sidebar in which the widget is active,
 *                      false if the widget is not active.
 */
function is_active_widget( $callback = false, $widget_id = false, $id_base = false, $skip_inactive = true ) {
	global $wp_registered_widgets;

	$sidebars_widgets = wp_get_sidebars_widgets();

	if ( is_array( $sidebars_widgets ) ) {
		foreach ( $sidebars_widgets as $sidebar => $widgets ) {
			if ( $skip_inactive && ( 'wp_inactive_widgets' === $sidebar || str_starts_with( $sidebar, 'orphaned_widgets' ) ) ) {
				continue;
			}

			if ( is_array( $widgets ) ) {
				foreach ( $widgets as $widget ) {
					if ( ( $callback && isset( $wp_registered_widgets[ $widget ]['callback'] ) && $wp_registered_widgets[ $widget ]['callback'] === $callback ) || ( $id_base && _get_widget_id_base( $widget ) === $id_base ) ) {
						if ( ! $widget_id || $widget_id === $wp_registered_widgets[ $widget ]['id'] ) {
							return $sidebar;
						}
					}
				}
			}
		}
	}
	return false;
}

/**
 * Determines whether the dynamic sidebar is enabled and used by the theme.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.2.0
 *
 * @global array $wp_registered_widgets  Registered widgets.
 * @global array $wp_registered_sidebars Registered sidebars.
 *
 * @return bool True if using widgets, false otherwise.
 */
function is_dynamic_sidebar() {
	global $wp_registered_widgets, $wp_registered_sidebars;

	$sidebars_widgets = get_option( 'sidebars_widgets' );

	foreach ( (array) $wp_registered_sidebars as $index => $sidebar ) {
		if ( ! empty( $sidebars_widgets[ $index ] ) ) {
			foreach ( (array) $sidebars_widgets[ $index ] as $widget ) {
				if ( array_key_exists( $widget, $wp_registered_widgets ) ) {
					return true;
				}
			}
		}
	}

	return false;
}

/**
 * Determines whether a sidebar contains widgets.
 *
 * For more information on this and similar theme functions, check out
 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
 * Conditional Tags} article in the Theme Developer Handbook.
 *
 * @since 2.8.0
 *
 * @param string|int $index Sidebar name, id or number to check.
 * @return bool True if the sidebar has widgets, false otherwise.
 */
function is_active_sidebar( $index ) {
	$index             = ( is_int( $index ) ) ? "sidebar-$index" : sanitize_title( $index );
	$sidebars_widgets  = wp_get_sidebars_widgets();
	$is_active_sidebar = ! empty( $sidebars_widgets[ $index ] );

	/**
	 * Filters whether a dynamic sidebar is considered "active".
	 *
	 * @since 3.9.0
	 *
	 * @param bool       $is_active_sidebar Whether or not the sidebar should be considered "active".
	 *                                      In other words, whether the sidebar contains any widgets.
	 * @param int|string $index             Index, name, or ID of the dynamic sidebar.
	 */
	return apply_filters( 'is_active_sidebar', $is_active_sidebar, $index );
}

//
// Internal Functions.
//

/**
 * Retrieve full list of sidebars and their widget instance IDs.
 *
 * Will upgrade sidebar widget list, if needed. Will also save updated list, if
 * needed.
 *
 * @since 2.2.0
 * @access private
 *
 * @global array $_wp_sidebars_widgets
 * @global array $sidebars_widgets
 *
 * @param bool $deprecated Not used (argument deprecated).
 * @return array Upgraded list of widgets to version 3 array format when called from the admin.
 */
function wp_get_sidebars_widgets( $deprecated = true ) {
	if ( true !== $deprecated ) {
		_deprecated_argument( __FUNCTION__, '2.8.1' );
	}

	global $_wp_sidebars_widgets, $sidebars_widgets;

	// If loading from front page, consult $_wp_sidebars_widgets rather than options
	// to see if wp_convert_widget_settings() has made manipulations in memory.
	if ( ! is_admin() ) {
		if ( empty( $_wp_sidebars_widgets ) ) {
			$_wp_sidebars_widgets = get_option( 'sidebars_widgets', array() );
		}

		$sidebars_widgets = $_wp_sidebars_widgets;
	} else {
		$sidebars_widgets = get_option( 'sidebars_widgets', array() );
	}

	if ( is_array( $sidebars_widgets ) && isset( $sidebars_widgets['array_version'] ) ) {
		unset( $sidebars_widgets['array_version'] );
	}

	/**
	 * Filters the list of sidebars and their widgets.
	 *
	 * @since 2.7.0
	 *
	 * @param array $sidebars_widgets An associative array of sidebars and their widgets.
	 */
	return apply_filters( 'sidebars_widgets', $sidebars_widgets );
}

/**
 * Retrieves the registered sidebar with the given ID.
 *
 * @since 5.9.0
 *
 * @global array $wp_registered_sidebars The registered sidebars.
 *
 * @param string $id The sidebar ID.
 * @return array|null The discovered sidebar, or null if it is not registered.
 */
function wp_get_sidebar( $id ) {
	global $wp_registered_sidebars;

	foreach ( (array) $wp_registered_sidebars as $sidebar ) {
		if ( $sidebar['id'] === $id ) {
			return $sidebar;
		}
	}

	if ( 'wp_inactive_widgets' === $id ) {
		return array(
			'id'   => 'wp_inactive_widgets',
			'name' => __( 'Inactive widgets' ),
		);
	}

	return null;
}

/**
 * Set the sidebar widget option to update sidebars.
 *
 * @since 2.2.0
 * @access private
 *
 * @global array $_wp_sidebars_widgets
 * @param array $sidebars_widgets Sidebar widgets and their settings.
 */
function wp_set_sidebars_widgets( $sidebars_widgets ) {
	global $_wp_sidebars_widgets;

	// Clear cached value used in wp_get_sidebars_widgets().
	$_wp_sidebars_widgets = null;

	if ( ! isset( $sidebars_widgets['array_version'] ) ) {
		$sidebars_widgets['array_version'] = 3;
	}

	update_option( 'sidebars_widgets', $sidebars_widgets );
}

/**
 * Retrieve default registered sidebars list.
 *
 * @since 2.2.0
 * @access private
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 *
 * @return array
 */
function wp_get_widget_defaults() {
	global $wp_registered_sidebars;

	$defaults = array();

	foreach ( (array) $wp_registered_sidebars as $index => $sidebar ) {
		$defaults[ $index ] = array();
	}

	return $defaults;
}

/**
 * Converts the widget settings from single to multi-widget format.
 *
 * @since 2.8.0
 *
 * @global array $_wp_sidebars_widgets
 *
 * @param string $base_name   Root ID for all widgets of this type.
 * @param string $option_name Option name for this widget type.
 * @param array  $settings    The array of widget instance settings.
 * @return array The array of widget settings converted to multi-widget format.
 */
function wp_convert_widget_settings( $base_name, $option_name, $settings ) {
	// This test may need expanding.
	$single  = false;
	$changed = false;

	if ( empty( $settings ) ) {
		$single = true;
	} else {
		foreach ( array_keys( $settings ) as $number ) {
			if ( 'number' === $number ) {
				continue;
			}
			if ( ! is_numeric( $number ) ) {
				$single = true;
				break;
			}
		}
	}

	if ( $single ) {
		$settings = array( 2 => $settings );

		// If loading from the front page, update sidebar in memory but don't save to options.
		if ( is_admin() ) {
			$sidebars_widgets = get_option( 'sidebars_widgets' );
		} else {
			if ( empty( $GLOBALS['_wp_sidebars_widgets'] ) ) {
				$GLOBALS['_wp_sidebars_widgets'] = get_option( 'sidebars_widgets', array() );
			}
			$sidebars_widgets = &$GLOBALS['_wp_sidebars_widgets'];
		}

		foreach ( (array) $sidebars_widgets as $index => $sidebar ) {
			if ( is_array( $sidebar ) ) {
				foreach ( $sidebar as $i => $name ) {
					if ( $base_name === $name ) {
						$sidebars_widgets[ $index ][ $i ] = "$name-2";
						$changed                          = true;
						break 2;
					}
				}
			}
		}

		if ( is_admin() && $changed ) {
			update_option( 'sidebars_widgets', $sidebars_widgets );
		}
	}

	$settings['_multiwidget'] = 1;
	if ( is_admin() ) {
		update_option( $option_name, $settings );
	}

	return $settings;
}

/**
 * Output an arbitrary widget as a template tag.
 *
 * @since 2.8.0
 *
 * @global WP_Widget_Factory $wp_widget_factory
 *
 * @param string $widget   The widget's PHP class name (see class-wp-widget.php).
 * @param array  $instance Optional. The widget's instance settings. Default empty array.
 * @param array  $args {
 *     Optional. Array of arguments to configure the display of the widget.
 *
 *     @type string $before_widget HTML content that will be prepended to the widget's HTML output.
 *                                 Default `<div class="widget %s">`, where `%s` is the widget's class name.
 *     @type string $after_widget  HTML content that will be appended to the widget's HTML output.
 *                                 Default `</div>`.
 *     @type string $before_title  HTML content that will be prepended to the widget's title when displayed.
 *                                 Default `<h2 class="widgettitle">`.
 *     @type string $after_title   HTML content that will be appended to the widget's title when displayed.
 *                                 Default `</h2>`.
 * }
 */
function the_widget( $widget, $instance = array(), $args = array() ) {
	global $wp_widget_factory;

	if ( ! isset( $wp_widget_factory->widgets[ $widget ] ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			sprintf(
				/* translators: %s: register_widget() */
				__( 'Widgets need to be registered using %s, before they can be displayed.' ),
				'<code>register_widget()</code>'
			),
			'4.9.0'
		);
		return;
	}

	$widget_obj = $wp_widget_factory->widgets[ $widget ];
	if ( ! ( $widget_obj instanceof WP_Widget ) ) {
		return;
	}

	$default_args          = array(
		'before_widget' => '<div class="widget %s">',
		'after_widget'  => '</div>',
		'before_title'  => '<h2 class="widgettitle">',
		'after_title'   => '</h2>',
	);
	$args                  = wp_parse_args( $args, $default_args );
	$args['before_widget'] = sprintf( $args['before_widget'], $widget_obj->widget_options['classname'] );

	$instance = wp_parse_args( $instance );

	/** This filter is documented in wp-includes/class-wp-widget.php */
	$instance = apply_filters( 'widget_display_callback', $instance, $widget_obj, $args );

	if ( false === $instance ) {
		return;
	}

	/**
	 * Fires before rendering the requested widget.
	 *
	 * @since 3.0.0
	 *
	 * @param string $widget   The widget's class name.
	 * @param array  $instance The current widget instance's settings.
	 * @param array  $args     An array of the widget's sidebar arguments.
	 */
	do_action( 'the_widget', $widget, $instance, $args );

	$widget_obj->_set( -1 );
	$widget_obj->widget( $args, $instance );
}

/**
 * Retrieves the widget ID base value.
 *
 * @since 2.8.0
 *
 * @param string $id Widget ID.
 * @return string Widget ID base.
 */
function _get_widget_id_base( $id ) {
	return preg_replace( '/-[0-9]+$/', '', $id );
}

/**
 * Handle sidebars config after theme change
 *
 * @access private
 * @since 3.3.0
 *
 * @global array $sidebars_widgets
 */
function _wp_sidebars_changed() {
	global $sidebars_widgets;

	if ( ! is_array( $sidebars_widgets ) ) {
		$sidebars_widgets = wp_get_sidebars_widgets();
	}

	retrieve_widgets( true );
}

/**
 * Validates and remaps any "orphaned" widgets to wp_inactive_widgets sidebar,
 * and saves the widget settings. This has to run at least on each theme change.
 *
 * For example, let's say theme A has a "footer" sidebar, and theme B doesn't have one.
 * After switching from theme A to theme B, all the widgets previously assigned
 * to the footer would be inaccessible. This function detects this scenario, and
 * moves all the widgets previously assigned to the footer under wp_inactive_widgets.
 *
 * Despite the word "retrieve" in the name, this function actually updates the database
 * and the global `$sidebars_widgets`. For that reason it should not be run on front end,
 * unless the `$theme_changed` value is 'customize' (to bypass the database write).
 *
 * @since 2.8.0
 *
 * @global array $wp_registered_sidebars Registered sidebars.
 * @global array $sidebars_widgets
 * @global array $wp_registered_widgets  Registered widgets.
 *
 * @param string|bool $theme_changed Whether the theme was changed as a boolean. A value
 *                                   of 'customize' defers updates for the Customizer.
 * @return array Updated sidebars widgets.
 */
function retrieve_widgets( $theme_changed = false ) {
	global $wp_registered_sidebars, $sidebars_widgets, $wp_registered_widgets;

	$registered_sidebars_keys = array_keys( $wp_registered_sidebars );
	$registered_widgets_ids   = array_keys( $wp_registered_widgets );

	if ( ! is_array( get_theme_mod( 'sidebars_widgets' ) ) ) {
		if ( empty( $sidebars_widgets ) ) {
			return array();
		}

		unset( $sidebars_widgets['array_version'] );

		$sidebars_widgets_keys = array_keys( $sidebars_widgets );
		sort( $sidebars_widgets_keys );
		sort( $registered_sidebars_keys );

		if ( $sidebars_widgets_keys === $registered_sidebars_keys ) {
			$sidebars_widgets = _wp_remove_unregistered_widgets( $sidebars_widgets, $registered_widgets_ids );

			return $sidebars_widgets;
		}
	}

	// Discard invalid, theme-specific widgets from sidebars.
	$sidebars_widgets = _wp_remove_unregistered_widgets( $sidebars_widgets, $registered_widgets_ids );
	$sidebars_widgets = wp_map_sidebars_widgets( $sidebars_widgets );

	// Find hidden/lost multi-widget instances.
	$shown_widgets = array_merge( ...array_values( $sidebars_widgets ) );
	$lost_widgets  = array_diff( $registered_widgets_ids, $shown_widgets );

	foreach ( $lost_widgets as $key => $widget_id ) {
		$number = preg_replace( '/.+?-([0-9]+)$/', '$1', $widget_id );

		// Only keep active and default widgets.
		if ( is_numeric( $number ) && (int) $number < 2 ) {
			unset( $lost_widgets[ $key ] );
		}
	}
	$sidebars_widgets['wp_inactive_widgets'] = array_merge( $lost_widgets, (array) $sidebars_widgets['wp_inactive_widgets'] );

	if ( 'customize' !== $theme_changed ) {
		// Update the widgets settings in the database.
		wp_set_sidebars_widgets( $sidebars_widgets );
	}

	return $sidebars_widgets;
}

/**
 * Compares a list of sidebars with their widgets against an allowed list.
 *
 * @since 4.9.0
 * @since 4.9.2 Always tries to restore widget assignments from previous data, not just if sidebars needed mapping.
 *
 * @param array $existing_sidebars_widgets List of sidebars and their widget instance IDs.
 * @return array Mapped sidebars widgets.
 */
function wp_map_sidebars_widgets( $existing_sidebars_widgets ) {
	global $wp_registered_sidebars;

	$new_sidebars_widgets = array(
		'wp_inactive_widgets' => array(),
	);

	// Short-circuit if there are no sidebars to map.
	if ( ! is_array( $existing_sidebars_widgets ) || empty( $existing_sidebars_widgets ) ) {
		return $new_sidebars_widgets;
	}

	foreach ( $existing_sidebars_widgets as $sidebar => $widgets ) {
		if ( 'wp_inactive_widgets' === $sidebar || str_starts_with( $sidebar, 'orphaned_widgets' ) ) {
			$new_sidebars_widgets['wp_inactive_widgets'] = array_merge( $new_sidebars_widgets['wp_inactive_widgets'], (array) $widgets );
			unset( $existing_sidebars_widgets[ $sidebar ] );
		}
	}

	// If old and new theme have just one sidebar, map it and we're done.
	if ( 1 === count( $existing_sidebars_widgets ) && 1 === count( $wp_registered_sidebars ) ) {
		$new_sidebars_widgets[ key( $wp_registered_sidebars ) ] = array_pop( $existing_sidebars_widgets );

		return $new_sidebars_widgets;
	}

	// Map locations with the same slug.
	$existing_sidebars = array_keys( $existing_sidebars_widgets );

	foreach ( $wp_registered_sidebars as $sidebar => $name ) {
		if ( in_array( $sidebar, $existing_sidebars, true ) ) {
			$new_sidebars_widgets[ $sidebar ] = $existing_sidebars_widgets[ $sidebar ];
			unset( $existing_sidebars_widgets[ $sidebar ] );
		} elseif ( ! array_key_exists( $sidebar, $new_sidebars_widgets ) ) {
			$new_sidebars_widgets[ $sidebar ] = array();
		}
	}

	// If there are more sidebars, try to map them.
	if ( ! empty( $existing_sidebars_widgets ) ) {

		/*
		 * If old and new theme both have sidebars that contain phrases
		 * from within the same group, make an educated guess and map it.
		 */
		$common_slug_groups = array(
			array( 'sidebar', 'primary', 'main', 'right' ),
			array( 'second', 'left' ),
			array( 'sidebar-2', 'footer', 'bottom' ),
			array( 'header', 'top' ),
		);

		// Go through each group...
		foreach ( $common_slug_groups as $slug_group ) {

			// ...and see if any of these slugs...
			foreach ( $slug_group as $slug ) {

				// ...and any of the new sidebars...
				foreach ( $wp_registered_sidebars as $new_sidebar => $args ) {

					// ...actually match!
					if ( false === stripos( $new_sidebar, $slug ) && false === stripos( $slug, $new_sidebar ) ) {
						continue;
					}

					// Then see if any of the existing sidebars...
					foreach ( $existing_sidebars_widgets as $sidebar => $widgets ) {

						// ...and any slug in the same group...
						foreach ( $slug_group as $slug ) {

							// ... have a match as well.
							if ( false === stripos( $sidebar, $slug ) && false === stripos( $slug, $sidebar ) ) {
								continue;
							}

							// Make sure this sidebar wasn't mapped and removed previously.
							if ( ! empty( $existing_sidebars_widgets[ $sidebar ] ) ) {

								// We have a match that can be mapped!
								$new_sidebars_widgets[ $new_sidebar ] = array_merge( $new_sidebars_widgets[ $new_sidebar ], $existing_sidebars_widgets[ $sidebar ] );

								// Remove the mapped sidebar so it can't be mapped again.
								unset( $existing_sidebars_widgets[ $sidebar ] );

								// Go back and check the next new sidebar.
								continue 3;
							}
						} // End foreach ( $slug_group as $slug ).
					} // End foreach ( $existing_sidebars_widgets as $sidebar => $widgets ).
				} // End foreach ( $wp_registered_sidebars as $new_sidebar => $args ).
			} // End foreach ( $slug_group as $slug ).
		} // End foreach ( $common_slug_groups as $slug_group ).
	}

	// Move any left over widgets to inactive sidebar.
	foreach ( $existing_sidebars_widgets as $widgets ) {
		if ( is_array( $widgets ) && ! empty( $widgets ) ) {
			$new_sidebars_widgets['wp_inactive_widgets'] = array_merge( $new_sidebars_widgets['wp_inactive_widgets'], $widgets );
		}
	}

	// Sidebars_widgets settings from when this theme was previously active.
	$old_sidebars_widgets = get_theme_mod( 'sidebars_widgets' );
	$old_sidebars_widgets = isset( $old_sidebars_widgets['data'] ) ? $old_sidebars_widgets['data'] : false;

	if ( is_array( $old_sidebars_widgets ) ) {

		// Remove empty sidebars, no need to map those.
		$old_sidebars_widgets = array_filter( $old_sidebars_widgets );

		// Only check sidebars that are empty or have not been mapped to yet.
		foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ) {
			if ( array_key_exists( $new_sidebar, $old_sidebars_widgets ) && ! empty( $new_widgets ) ) {
				unset( $old_sidebars_widgets[ $new_sidebar ] );
			}
		}

		// Remove orphaned widgets, we're only interested in previously active sidebars.
		foreach ( $old_sidebars_widgets as $sidebar => $widgets ) {
			if ( str_starts_with( $sidebar, 'orphaned_widgets' ) ) {
				unset( $old_sidebars_widgets[ $sidebar ] );
			}
		}

		$old_sidebars_widgets = _wp_remove_unregistered_widgets( $old_sidebars_widgets );

		if ( ! empty( $old_sidebars_widgets ) ) {

			// Go through each remaining sidebar...
			foreach ( $old_sidebars_widgets as $old_sidebar => $old_widgets ) {

				// ...and check every new sidebar...
				foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ) {

					// ...for every widget we're trying to revive.
					foreach ( $old_widgets as $key => $widget_id ) {
						$active_key = array_search( $widget_id, $new_widgets, true );

						// If the widget is used elsewhere...
						if ( false !== $active_key ) {

							// ...and that elsewhere is inactive widgets...
							if ( 'wp_inactive_widgets' === $new_sidebar ) {

								// ...remove it from there and keep the active version...
								unset( $new_sidebars_widgets['wp_inactive_widgets'][ $active_key ] );
							} else {

								// ...otherwise remove it from the old sidebar and keep it in the new one.
								unset( $old_sidebars_widgets[ $old_sidebar ][ $key ] );
							}
						} // End if ( $active_key ).
					} // End foreach ( $old_widgets as $key => $widget_id ).
				} // End foreach ( $new_sidebars_widgets as $new_sidebar => $new_widgets ).
			} // End foreach ( $old_sidebars_widgets as $old_sidebar => $old_widgets ).
		} // End if ( ! empty( $old_sidebars_widgets ) ).

		// Restore widget settings from when theme was previously active.
		$new_sidebars_widgets = array_merge( $new_sidebars_widgets, $old_sidebars_widgets );
	}

	return $new_sidebars_widgets;
}

/**
 * Compares a list of sidebars with their widgets against an allowed list.
 *
 * @since 4.9.0
 *
 * @param array $sidebars_widgets   List of sidebars and their widget instance IDs.
 * @param array $allowed_widget_ids Optional. List of widget IDs to compare against. Default: Registered widgets.
 * @return array Sidebars with allowed widgets.
 */
function _wp_remove_unregistered_widgets( $sidebars_widgets, $allowed_widget_ids = array() ) {
	if ( empty( $allowed_widget_ids ) ) {
		$allowed_widget_ids = array_keys( $GLOBALS['wp_registered_widgets'] );
	}

	foreach ( $sidebars_widgets as $sidebar => $widgets ) {
		if ( is_array( $widgets ) ) {
			$sidebars_widgets[ $sidebar ] = array_intersect( $widgets, $allowed_widget_ids );
		}
	}

	return $sidebars_widgets;
}

/**
 * Display the RSS entries in a list.
 *
 * @since 2.5.0
 *
 * @param string|array|object $rss  RSS url.
 * @param array               $args Widget arguments.
 */
function wp_widget_rss_output( $rss, $args = array() ) {
	if ( is_string( $rss ) ) {
		$rss = fetch_feed( $rss );
	} elseif ( is_array( $rss ) && isset( $rss['url'] ) ) {
		$args = $rss;
		$rss  = fetch_feed( $rss['url'] );
	} elseif ( ! is_object( $rss ) ) {
		return;
	}

	if ( is_wp_error( $rss ) ) {
		if ( is_admin() || current_user_can( 'manage_options' ) ) {
			echo '<p><strong>' . __( 'RSS Error:' ) . '</strong> ' . esc_html( $rss->get_error_message() ) . '</p>';
		}
		return;
	}

	$default_args = array(
		'show_author'  => 0,
		'show_date'    => 0,
		'show_summary' => 0,
		'items'        => 0,
	);
	$args         = wp_parse_args( $args, $default_args );

	$items = (int) $args['items'];
	if ( $items < 1 || 20 < $items ) {
		$items = 10;
	}
	$show_summary = (int) $args['show_summary'];
	$show_author  = (int) $args['show_author'];
	$show_date    = (int) $args['show_date'];

	if ( ! $rss->get_item_quantity() ) {
		echo '<ul><li>' . __( 'An error has occurred, which probably means the feed is down. Try again later.' ) . '</li></ul>';
		$rss->__destruct();
		unset( $rss );
		return;
	}

	echo '<ul>';
	foreach ( $rss->get_items( 0, $items ) as $item ) {
		$link = $item->get_link();
		while ( ! empty( $link ) && stristr( $link, 'http' ) !== $link ) {
			$link = substr( $link, 1 );
		}
		$link = esc_url( strip_tags( $link ) );

		$title = esc_html( trim( strip_tags( $item->get_title() ) ) );
		if ( empty( $title ) ) {
			$title = __( 'Untitled' );
		}

		$desc = html_entity_decode( $item->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) );
		$desc = esc_attr( wp_trim_words( $desc, 55, ' [&hellip;]' ) );

		$summary = '';
		if ( $show_summary ) {
			$summary = $desc;

			// Change existing [...] to [&hellip;].
			if ( str_ends_with( $summary, '[...]' ) ) {
				$summary = substr( $summary, 0, -5 ) . '[&hellip;]';
			}

			$summary = '<div class="rssSummary">' . esc_html( $summary ) . '</div>';
		}

		$date = '';
		if ( $show_date ) {
			$date = $item->get_date( 'U' );

			if ( $date ) {
				$date = ' <span class="rss-date">' . date_i18n( get_option( 'date_format' ), $date ) . '</span>';
			}
		}

		$author = '';
		if ( $show_author ) {
			$author = $item->get_author();
			if ( is_object( $author ) ) {
				$author = $author->get_name();
				$author = ' <cite>' . esc_html( strip_tags( $author ) ) . '</cite>';
			}
		}

		if ( '' === $link ) {
			echo "<li>$title{$date}{$summary}{$author}</li>";
		} elseif ( $show_summary ) {
			echo "<li><a class='rsswidget' href='$link'>$title</a>{$date}{$summary}{$author}</li>";
		} else {
			echo "<li><a class='rsswidget' href='$link'>$title</a>{$date}{$author}</li>";
		}
	}
	echo '</ul>';
	$rss->__destruct();
	unset( $rss );
}

/**
 * Display RSS widget options form.
 *
 * The options for what fields are displayed for the RSS form are all booleans
 * and are as follows: 'url', 'title', 'items', 'show_summary', 'show_author',
 * 'show_date'.
 *
 * @since 2.5.0
 *
 * @param array|string $args   Values for input fields.
 * @param array        $inputs Override default display options.
 */
function wp_widget_rss_form( $args, $inputs = null ) {
	$default_inputs = array(
		'url'          => true,
		'title'        => true,
		'items'        => true,
		'show_summary' => true,
		'show_author'  => true,
		'show_date'    => true,
	);
	$inputs         = wp_parse_args( $inputs, $default_inputs );

	$args['title'] = isset( $args['title'] ) ? $args['title'] : '';
	$args['url']   = isset( $args['url'] ) ? $args['url'] : '';
	$args['items'] = isset( $args['items'] ) ? (int) $args['items'] : 0;

	if ( $args['items'] < 1 || 20 < $args['items'] ) {
		$args['items'] = 10;
	}

	$args['show_summary'] = isset( $args['show_summary'] ) ? (int) $args['show_summary'] : (int) $inputs['show_summary'];
	$args['show_author']  = isset( $args['show_author'] ) ? (int) $args['show_author'] : (int) $inputs['show_author'];
	$args['show_date']    = isset( $args['show_date'] ) ? (int) $args['show_date'] : (int) $inputs['show_date'];

	if ( ! empty( $args['error'] ) ) {
		echo '<p class="widget-error"><strong>' . __( 'RSS Error:' ) . '</strong> ' . esc_html( $args['error'] ) . '</p>';
	}

	$esc_number = esc_attr( $args['number'] );
	if ( $inputs['url'] ) :
		?>
	<p><label for="rss-url-<?php echo $esc_number; ?>"><?php _e( 'Enter the RSS feed URL here:' ); ?></label>
	<input class="widefat" id="rss-url-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][url]" type="text" value="<?php echo esc_url( $args['url'] ); ?>"></p>
<?php endif; if ( $inputs['title'] ) : ?>
	<p><label for="rss-title-<?php echo $esc_number; ?>"><?php _e( 'Give the feed a title (optional):' ); ?></label>
	<input class="widefat" id="rss-title-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][title]" type="text" value="<?php echo esc_attr( $args['title'] ); ?>"></p>
<?php endif; if ( $inputs['items'] ) : ?>
	<p><label for="rss-items-<?php echo $esc_number; ?>"><?php _e( 'How many items would you like to display?' ); ?></label>
	<select id="rss-items-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][items]">
	<?php
	for ( $i = 1; $i <= 20; ++$i ) {
		echo "<option value='$i' " . selected( $args['items'], $i, false ) . ">$i</option>";
	}
	?>
	</select></p>
<?php endif; if ( $inputs['show_summary'] || $inputs['show_author'] || $inputs['show_date'] ) : ?>
	<p>
	<?php if ( $inputs['show_summary'] ) : ?>
		<input id="rss-show-summary-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_summary]" type="checkbox" value="1" <?php checked( $args['show_summary'] ); ?>>
		<label for="rss-show-summary-<?php echo $esc_number; ?>"><?php _e( 'Display item content?' ); ?></label><br>
	<?php endif; if ( $inputs['show_author'] ) : ?>
		<input id="rss-show-author-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_author]" type="checkbox" value="1" <?php checked( $args['show_author'] ); ?>>
		<label for="rss-show-author-<?php echo $esc_number; ?>"><?php _e( 'Display item author if available?' ); ?></label><br>
	<?php endif; if ( $inputs['show_date'] ) : ?>
		<input id="rss-show-date-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_date]" type="checkbox" value="1" <?php checked( $args['show_date'] ); ?>>
		<label for="rss-show-date-<?php echo $esc_number; ?>"><?php _e( 'Display item date?' ); ?></label><br>
	<?php endif; ?>
	</p>
	<?php
	endif; // End of display options.
foreach ( array_keys( $default_inputs ) as $input ) :
	if ( 'hidden' === $inputs[ $input ] ) :
		$id = str_replace( '_', '-', $input );
		?>
<input type="hidden" id="rss-<?php echo esc_attr( $id ); ?>-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][<?php echo esc_attr( $input ); ?>]" value="<?php echo esc_attr( $args[ $input ] ); ?>">
		<?php
	endif;
	endforeach;
}

/**
 * Process RSS feed widget data and optionally retrieve feed items.
 *
 * The feed widget can not have more than 20 items or it will reset back to the
 * default, which is 10.
 *
 * The resulting array has the feed title, feed url, feed link (from channel),
 * feed items, error (if any), and whether to show summary, author, and date.
 * All respectively in the order of the array elements.
 *
 * @since 2.5.0
 *
 * @param array $widget_rss RSS widget feed data. Expects unescaped data.
 * @param bool  $check_feed Optional. Whether to check feed for errors. Default true.
 * @return array
 */
function wp_widget_rss_process( $widget_rss, $check_feed = true ) {
	$items = (int) $widget_rss['items'];
	if ( $items < 1 || 20 < $items ) {
		$items = 10;
	}
	$url          = sanitize_url( strip_tags( $widget_rss['url'] ) );
	$title        = isset( $widget_rss['title'] ) ? trim( strip_tags( $widget_rss['title'] ) ) : '';
	$show_summary = isset( $widget_rss['show_summary'] ) ? (int) $widget_rss['show_summary'] : 0;
	$show_author  = isset( $widget_rss['show_author'] ) ? (int) $widget_rss['show_author'] : 0;
	$show_date    = isset( $widget_rss['show_date'] ) ? (int) $widget_rss['show_date'] : 0;
	$error        = false;
	$link         = '';

	if ( $check_feed ) {
		$rss = fetch_feed( $url );

		if ( is_wp_error( $rss ) ) {
			$error = $rss->get_error_message();
		} else {
			$link = esc_url( strip_tags( $rss->get_permalink() ) );
			while ( stristr( $link, 'http' ) !== $link ) {
				$link = substr( $link, 1 );
			}

			$rss->__destruct();
			unset( $rss );
		}
	}

	return compact( 'title', 'url', 'link', 'items', 'error', 'show_summary', 'show_author', 'show_date' );
}

/**
 * Registers all of the default WordPress widgets on startup.
 *
 * Calls {@see 'widgets_init'} action after all of the WordPress widgets have been registered.
 *
 * @since 2.2.0
 */
function wp_widgets_init() {
	if ( ! is_blog_installed() ) {
		return;
	}

	register_widget( 'WP_Widget_Pages' );

	register_widget( 'WP_Widget_Calendar' );

	register_widget( 'WP_Widget_Archives' );

	if ( get_option( 'link_manager_enabled' ) ) {
		register_widget( 'WP_Widget_Links' );
	}

	register_widget( 'WP_Widget_Media_Audio' );

	register_widget( 'WP_Widget_Media_Image' );

	register_widget( 'WP_Widget_Media_Gallery' );

	register_widget( 'WP_Widget_Media_Video' );

	register_widget( 'WP_Widget_Meta' );

	register_widget( 'WP_Widget_Search' );

	register_widget( 'WP_Widget_Text' );

	register_widget( 'WP_Widget_Categories' );

	register_widget( 'WP_Widget_Recent_Posts' );

	register_widget( 'WP_Widget_Recent_Comments' );

	register_widget( 'WP_Widget_RSS' );

	register_widget( 'WP_Widget_Tag_Cloud' );

	register_widget( 'WP_Nav_Menu_Widget' );

	register_widget( 'WP_Widget_Custom_HTML' );

	/**
	 * Fires after all default WordPress widgets have been registered.
	 *
	 * @since 2.2.0
	 */
	do_action( 'widgets_init' );
}

/**
 * Converts a widget ID into its id_base and number components.
 *
 * @since 5.8.0
 *
 * @param string $id Widget ID.
 * @return array Array containing a widget's id_base and number components.
 */
function wp_parse_widget_id( $id ) {
	$parsed = array();

	if ( preg_match( '/^(.+)-(\d+)$/', $id, $matches ) ) {
		$parsed['id_base'] = $matches[1];
		$parsed['number']  = (int) $matches[2];
	} else {
		// Likely an old single widget.
		$parsed['id_base'] = $id;
	}

	return $parsed;
}

/**
 * Finds the sidebar that a given widget belongs to.
 *
 * @since 5.8.0
 *
 * @param string $widget_id The widget ID to look for.
 * @return string|null The found sidebar's ID, or null if it was not found.
 */
function wp_find_widgets_sidebar( $widget_id ) {
	foreach ( wp_get_sidebars_widgets() as $sidebar_id => $widget_ids ) {
		foreach ( $widget_ids as $maybe_widget_id ) {
			if ( $maybe_widget_id === $widget_id ) {
				return (string) $sidebar_id;
			}
		}
	}

	return null;
}

/**
 * Assigns a widget to the given sidebar.
 *
 * @since 5.8.0
 *
 * @param string $widget_id  The widget ID to assign.
 * @param string $sidebar_id The sidebar ID to assign to. If empty, the widget won't be added to any sidebar.
 */
function wp_assign_widget_to_sidebar( $widget_id, $sidebar_id ) {
	$sidebars = wp_get_sidebars_widgets();

	foreach ( $sidebars as $maybe_sidebar_id => $widgets ) {
		foreach ( $widgets as $i => $maybe_widget_id ) {
			if ( $widget_id === $maybe_widget_id && $sidebar_id !== $maybe_sidebar_id ) {
				unset( $sidebars[ $maybe_sidebar_id ][ $i ] );
				// We could technically break 2 here, but continue looping in case the ID is duplicated.
				continue 2;
			}
		}
	}

	if ( $sidebar_id ) {
		$sidebars[ $sidebar_id ][] = $widget_id;
	}

	wp_set_sidebars_widgets( $sidebars );
}

/**
 * Calls the render callback of a widget and returns the output.
 *
 * @since 5.8.0
 *
 * @param string $widget_id Widget ID.
 * @param string $sidebar_id Sidebar ID.
 * @return string
 */
function wp_render_widget( $widget_id, $sidebar_id ) {
	global $wp_registered_widgets, $wp_registered_sidebars;

	if ( ! isset( $wp_registered_widgets[ $widget_id ] ) ) {
		return '';
	}

	if ( isset( $wp_registered_sidebars[ $sidebar_id ] ) ) {
		$sidebar = $wp_registered_sidebars[ $sidebar_id ];
	} elseif ( 'wp_inactive_widgets' === $sidebar_id ) {
		$sidebar = array();
	} else {
		return '';
	}

	$params = array_merge(
		array(
			array_merge(
				$sidebar,
				array(
					'widget_id'   => $widget_id,
					'widget_name' => $wp_registered_widgets[ $widget_id ]['name'],
				)
			),
		),
		(array) $wp_registered_widgets[ $widget_id ]['params']
	);

	// Substitute HTML `id` and `class` attributes into `before_widget`.
	$classname_ = '';
	foreach ( (array) $wp_registered_widgets[ $widget_id ]['classname'] as $cn ) {
		if ( is_string( $cn ) ) {
			$classname_ .= '_' . $cn;
		} elseif ( is_object( $cn ) ) {
			$classname_ .= '_' . get_class( $cn );
		}
	}
	$classname_                 = ltrim( $classname_, '_' );
	$params[0]['before_widget'] = sprintf( $params[0]['before_widget'], $widget_id, $classname_ );

	/** This filter is documented in wp-includes/widgets.php */
	$params = apply_filters( 'dynamic_sidebar_params', $params );

	$callback = $wp_registered_widgets[ $widget_id ]['callback'];

	ob_start();

	/** This filter is documented in wp-includes/widgets.php */
	do_action( 'dynamic_sidebar', $wp_registered_widgets[ $widget_id ] );

	if ( is_callable( $callback ) ) {
		call_user_func_array( $callback, $params );
	}

	return ob_get_clean();
}

/**
 * Calls the control callback of a widget and returns the output.
 *
 * @since 5.8.0
 *
 * @param string $id Widget ID.
 * @return string|null
 */
function wp_render_widget_control( $id ) {
	global $wp_registered_widget_controls;

	if ( ! isset( $wp_registered_widget_controls[ $id ]['callback'] ) ) {
		return null;
	}

	$callback = $wp_registered_widget_controls[ $id ]['callback'];
	$params   = $wp_registered_widget_controls[ $id ]['params'];

	ob_start();

	if ( is_callable( $callback ) ) {
		call_user_func_array( $callback, $params );
	}

	return ob_get_clean();
}

/**
 * Renders the modal for adding media to widgets
 *
 * @since CP-2.5.0
 *
 * @return string
 */
function cp_render_widget_upload_template() {

	// Get the maximum upload size.
	$max_upload_size = wp_max_upload_size();
	if ( ! $max_upload_size ) {
		$max_upload_size = 0;
	}

	// Get a list of allowed mime types.
	$allowed_mimes = get_allowed_mime_types();
	$mimes_list = implode( ',', $allowed_mimes );

	// Get the user's preferred items per page.
	$user_id = get_current_user_id();
	$per_page = get_user_meta( $user_id, 'media_grid_per_page', true );
	if ( empty( $per_page ) || $per_page < 1 ) {
		$per_page = 80;
	}

	// Get the user's capabilities.
	$readonly = current_user_can( 'edit_posts' ) ? '' : 'readonly';
	$no_edit  = $readonly === 'readonly' ? 'hidden' : '';
	$disabled = $readonly === 'readonly' ? 'disabled' : '';
	$hidden   = current_user_can( 'delete_posts' ) ? '' : 'hidden';

	// Fetch media items.
	$paged = isset( $_GET['paged'] ) ? absint( $_GET['paged'] ) : 1;
	$attachment_args = array(
		'post_type'      => 'attachment',
		'post_status'    => 'inherit',
		'posts_per_page' => $per_page,
		'paged'          => $paged,
	);
	$attachments = new WP_Query( $attachment_args );

	$total_pages = ( $attachments->max_num_pages ) ? (int) $attachments->max_num_pages : 1;
	$prev_page   = ( $paged === 1 ) ? $paged : $paged - 1;
	$next_page   = ( $paged === $total_pages ) ? $paged : $paged + 1;

	$uri = 'widgets.php';
	if ( is_customize_preview() ) {
		$uri = 'customize.php';
	}

	$attachment_url_options = '<option value="none" selected>' . esc_html__( 'None' ) . '</option>';
	$attachment_url_options .= '<option value="file">' . esc_html__( 'Image URL' ) . '</option>';
	if ( '1' === get_option( 'wp_attachment_pages_enabled' ) ) {
		$attachment_url_options .= '<option value="post">' . esc_html__( 'Attachment Page' ) . '</option>';
	}
	$attachment_url_options .= '<option value="custom">' . esc_html__( 'Custom URL' ) . '</option>';

	ob_start();
	?>

<template id="tmpl-media-grid-modal">
	<div class="widget-modal-header-buttons">
		<div role="tablist" aria-orientation="horizontal" class="widget-modal-router">
			<button type="button" role="tab" class="media-menu-item" id="menu-item-upload" aria-selected="false" aria-controls="uploader-inline"><?php esc_html_e( 'Upload files' ); ?></button>
			<button type="button" role="tab" class="media-menu-item active" id="menu-item-browse" aria-selected="true" aria-controls="media-library-grid"><?php esc_html_e( 'Media Library' ); ?></button>
		</div>

		<div class="widget-modal-pages">
			<span class="displaying-num"><?php esc_html_e( '2 items' ); ?></span>
			<span class="pagination-links">
				<button type="button" class="first-page button" data-page="1" disabled inert>
					<span class="screen-reader-text"><?php esc_html_e( 'First page' ); ?></span><span aria-hidden="true">«</span>
				</button>
				<button type="button"class="prev-page button" data-page="1" disabled inert>
					<span class="screen-reader-text"><?php esc_html_e( 'Previous page' ); ?></span><span aria-hidden="true">‹</span>
				</button>
				<span class="paging-input">
					<label for="current-page-selector" class="screen-reader-text"><?php esc_html_e( 'Current Page' ); ?></label>
					<input class="current-page" id="current-page-selector" type="text" name="paged" value="1" size="4" aria-describedby="table-paging">
					<span id="table-paging" class="tablenav-paging-text"> <?php esc_html_e( 'of' ); ?> <span class="total-pages"><?php esc_html_e( $total_pages ); ?></span></span>
				</span>
				<button type="button" class="next-page button" data-page="<?php echo $next_page; ?>"
					<?php
					if ( $paged === $next_page ) {
						echo 'disabled inert';
					}
					?>
				>
					<span class="screen-reader-text"><?php esc_html_e( 'Next page' ); ?></span><span aria-hidden="true">›</span>
				</button>
				<button type="button" class="last-page button" data-page="<?php echo $total_pages; ?>"
					<?php
					if ( $paged === $next_page ) {
						echo 'disabled inert';
					}
					?>
				>
					<span class="screen-reader-text"><?php esc_html_e( 'Last page' ); ?></span><span aria-hidden="true">»</span>
				</button>
			</span>
		</div><!-- end .modal-pages -->
	</div>

	<div id="widget-modal-media-content">
		<article class="widget-modal-content">
				
			<div id="uploader-inline" class="uploader-inline" role="tabpanel" data-allowed-mimes="<?php echo esc_attr( $mimes_list ); ?>" hidden inert>
				<input type="file" id="filepond" class="filepond" name="filepond" multiple data-allow-reorder="true">
				<input id="ajax-url" value="<?php echo esc_url( admin_url( 'admin-ajax.php' ) ); ?>" data-max-file-size="<?php echo esc_attr( size_format( $max_upload_size ) ); ?>" hidden>
				<?php wp_nonce_field( 'media-form' ); ?>

				<div class="post-upload-ui" id="post-upload-info">
					<p class="max-upload-size">

						<?php
						/* translators: %s: Maximum allowed file size. */
						printf( __( 'Maximum upload file size: %s.' ), esc_html( size_format( $max_upload_size ) ) );
						?>

					</p>
				</div>
			</div><!-- end #uploader-inline -->

			<div id="media-library-grid" class="media-library-grid" role="tabpanel">
				<section class="media-library-select-section">
					<div class="media-library-select-div">
						<div>
							<h3 class="widget-modal-filter-heading"><?php esc_html_e( 'Filter media' ); ?></h3>
							<fieldset>

								<?php
								// Select dropdown boxes
								$list_table = _get_list_table( 'WP_Media_List_Table' );
								$list_table->months_dropdown( 'attachment' );
								$list_table->media_categories_dropdown( 'attachment' );
								?>

							</fieldset>
						</div>

						<div class="widget-modal-search-form">
							<label for="widget-modal-search-input" class="widget-modal-search-label"><?php esc_html_e( 'Search' ); ?></label>
							<input type="search" id="widget-modal-search-input" class="search">
						</div>
					</div>
				</section>

				<section class="media-library-grid-section">
					<ul class="widget-modal-grid">
						<?php // populated by JS after call to fetch API ?>
					</ul>
					<p class="load-more-count">
						<?php // populated, if applicable, by JS after call to fetch API ?>
					</p>
					<p class="no-media" hidden="true">
						<?php // populated, if applicable, by JS after call to fetch API ?>
					</p>
				</section>
			</div>

			<aside class="widget-modal-right-sidebar">
				<div class="widget-modal-right-sidebar-info" hidden>
					<h3><?php esc_html_e( 'Attachment Details' ); ?></h3>
					<fieldset class="widget-modal-attachment-info">
						<div class="thumbnail thumbnail-image">
							<img src="<?php echo esc_url( includes_url() . 'images/blank.gif' ); ?>" draggable="false" alt="">
						</div>
						<div class="details">
							<div class="filename"><strong><span class="screen-reader-text"><?php esc_html_e( 'File name:' ); ?></span> <span class="attachment-filename"></span></strong></div>
							<div class="uploaded">
								<span class="screen-reader-text"><?php esc_html_e( 'Uploaded on:' ); ?></span> <span class="attachment-date"></span>
							</div>
							<div class="file-size">
								<span class="screen-reader-text"><?php esc_html_e( 'File size:' ); ?></span> <span class="attachment-filesize"></span>
							</div>
							<div class="dimensions">
								<span class="screen-reader-text"><?php esc_html_e( 'Dimensions:' ); ?></span> <span class="attachment-dimensions"></span>
							</div>
							<div <?php echo $no_edit; ?>>
								<a id="edit-more" href=""><?php esc_html_e( 'Edit details' ); ?></a>
							</div>
							<div <?php echo $hidden; ?>>
								<button type="button" class="button-link delete-attachment"><?php esc_html_e( 'Delete permanently' ); ?></button>
							</div>
							<div class="compat-meta"></div>
						</div>							
					</fieldset>

					<fieldset class="widget-modal-descriptions">
						<div class="setting alt-text has-description" data-setting="alt">
							<label for="attachment-details-alt-text" class="name"><?php esc_html_e( 'Alt Text' ); ?></label>
							<textarea id="attachment-details-alt-text" aria-describedby="alt-text-description" <?php echo $readonly; ?>></textarea>
						</div>
						<p class="description" id="alt-text-description"><a href="https://www.w3.org/WAI/tutorials/images/decision-tree" target="_blank" rel="noopener"><?php esc_html_e( 'Learn how to describe the purpose of the image' ); ?><span class="screen-reader-text"> <?php esc_html_e( '(opens in a new tab)' ); ?></span></a><?php esc_html_e( '. Leave empty if the image is purely decorative.' ); ?></p>

						<div class="setting" data-setting="title">
							<label for="attachment-details-title" class="name"><?php esc_html_e( 'Title' ); ?></label>
							<input type="text" id="attachment-details-title" value="" <?php echo $readonly; ?>>
						</div>

						<span class="settings-save-status" role="status">
							<span id="details-saved" class="success hidden" aria-hidden="true"><?php esc_html_e( 'Saved!' ); ?></span>
						</span>

						<div class="setting" data-setting="caption">
							<label for="attachment-details-caption" class="name"><?php esc_html_e( 'Caption' ); ?></label>
							<textarea id="attachment-details-caption" <?php echo $readonly; ?>></textarea>
						</div>

						<div class="setting" data-setting="description">
							<label for="attachment-details-description" class="name"><?php esc_html_e( 'Description' ); ?></label>
							<textarea id="attachment-details-description" <?php echo $readonly; ?>></textarea>
						</div>

						<div class="setting" data-setting="url">
							<label for="attachment-details-copy-link" class="name" style="padding:8px 1em 0 0;"><?php esc_html_e( 'File URL' ); ?></label>
							<input type="text" class="attachment-details-copy-link" id="attachment-details-copy-link" value="" readonly>
						</div>
						<div class="copy-to-clipboard-container">
							<button type="button" class="button button-small copy-attachment-url media-library" data-clipboard-target="#attachment-details-copy-link"><?php esc_html_e( 'Copy URL to clipboard' ); ?></button>
							<span class="success hidden" aria-hidden="true"><?php esc_html_e( 'Copied!' ); ?></span>
						</div>

						<div class="attachment-compat"></div>
						<span class="setting settings-save-status" role="status">
							<span id="tax-saved" class="success hidden" aria-hidden="true"><?php esc_html_e( 'Taxonomy updated successfully!' ); ?></span>
						</span>
					</fieldset>

					<h3><?php esc_html_e( 'Attachment Display Settings' ); ?></h3>
					<fieldset class="widget-modal-display-settings">
						<div class="setting">
							<label for="attachment-display-settings-link-to" class="name"><?php esc_html_e( 'Link To' ); ?></label>
							<select id="attachment-display-settings-link-to" class="link-to" data-setting="link" <?php echo $disabled; ?>>
								<?php echo $attachment_url_options; ?>
							</select>
						</div>

						<div class="setting setting-hidden">
							<label for="attachment-display-settings-link-to-custom" class="name"><?php esc_html_e( 'URL' ); ?></label>
							<input id="attachment-display-settings-link-to-custom" type="url" class="link-to-custom" placeholder="https://" data-setting="linkUrl" <?php echo $readonly; ?>>
						</div>

						<div class="setting">
							<label for="attachment-display-settings-size" class="name"><?php _e( 'Size' ); ?></label>
							<select id="attachment-display-settings-size" class="size" name="size" data-setting="size" <?php echo $disabled; ?>></select>
						</div>
					</fieldset>
				</div>

				<div class="media-uploader-status" hidden>
					<h3><?php esc_html_e( 'Uploading' ); ?></h3>
					<fieldset class="media-progress-bar">
					<div></div>
					</fieldset>
					<fieldset class="upload-details">
						<span class="upload-count">
							<span class="upload-index"></span> / <span class="upload-total"></span>
						</span>
						<span class="upload-detail-separator">–</span>
						<span class="upload-filename"></span>
					</fieldset>
					<div class="upload-errors"></div>
					<button type="button" class="button upload-dismiss-errors"><?php esc_html_e( 'Dismiss errors' ); ?></button>
				</div>
			</aside>
		</article>

		<article id="insert-from-url-panel" class="insert-from-url-panel" hidden inert>
			<div class="widget-modal-url-container">
				<div class="widget-modal-media-embed">
					<div class="widget-modal-embed-url">
						<input id="widget-modal-embed-url-field" type="url" aria-labelledby="media-frame-title-2">
					</div>

					<div id="widget-modal-url-settings" class="widget-modal-url-media-settings">
						<div class="wp-clearfix">
							<div class="thumbnail"></div>
						</div>

						<div class="setting alt-text has-description">
							<label for="embed-image-settings-alt-text" class="name"><?php esc_html_e( 'Alternative Text' ); ?></label>
							<textarea id="embed-image-settings-alt-text" data-setting="alt" aria-describedby="alt-text-description" <?php echo $readonly; ?>></textarea>
						</div>
						<p class="description" id="alt-text-description"><a href="https://www.w3.org/WAI/tutorials/images/decision-tree" target="_blank" rel="noopener"><?php esc_html_e( 'Learn how to describe the purpose of the image' ); ?> <span class="screen-reader-text"><?php esc_html_e( '(opens in a new tab)' ); ?></span></a>. <?php esc_html_e( 'Leave empty if the image is purely decorative.' ); ?></p>

						<div class="setting caption">
							<label for="embed-image-settings-caption" class="name"><?php esc_html_e( 'Caption' ); ?></label>
							<textarea id="embed-image-settings-caption" data-setting="caption" <?php echo $readonly; ?>></textarea>
						</div>

						<fieldset class="setting-group">
							<legend class="name"><?php esc_html_e( 'Link To' ); ?></legend>
							<div class="setting link-to">
								<select id="link-to" name="link-to" data-setting="link" <?php echo $disabled; ?>>
									<?php echo $attachment_url_options; ?>
								</select>
							</div>
							<div id="link-to-url" hidden>
								<label for="embed-image-settings-link-to-custom" class="name"><?php esc_html_e( 'URL' ); ?></label>
								<input type="url" id="embed-image-settings-link-to-custom" class="link-to-custom" data-setting="linkUrl" <?php echo $readonly; ?>>
							</div>
						</fieldset>
					</div>

				</div>
			</div>
		</article><!-- end #insert-from-url-panel -->

		<footer class="widget-modal-footer">
			<div class="widget-modal-footer-buttons">
				<button id="media-button-insert" type="button" class="button media-button button-primary button-large media-button-insert" disabled><?php esc_html_e( 'Add to Widget' ); ?></button>
			</div>
		</footer>
	</div>
</template>

	<?php
	return ob_get_clean();
}
