WordPress/wp-admin/privacy.php

<?php
/**
 * Privacy Settings Screen.
 *
 * @package WordPress
 * @subpackage Administration
 */

/** WordPress Administration Bootstrap */
require_once( dirname( __FILE__ ) . '/admin.php' );

if ( ! current_user_can( 'manage_privacy_options' ) ) {
	wp_die( __( 'Sorry, you are not allowed to manage privacy on this site.' ) );
}

if ( ! class_exists( 'WP_Privacy_Policy_Content' ) ) {
	require_once( ABSPATH . 'wp-admin/includes/misc.php' );
}

// "Borrow" xfn.js for now so we don't have to create new files.
wp_enqueue_script( 'xfn' );

$action = isset( $_POST['action'] ) ? $_POST['action'] : '';

if ( ! empty( $action ) ) {
	check_admin_referer( $action );

	if ( 'set-privacy-page' === $action ) {
		$privacy_policy_page_id = isset( $_POST['page_for_privacy_policy'] ) ? (int) $_POST['page_for_privacy_policy'] : 0;
		update_option( 'wp_page_for_privacy_policy', $privacy_policy_page_id );

		add_settings_error(
			'page_for_privacy_policy',
			'page_for_privacy_policy',
			sprintf(
				/* translators: %s: URL to Customizer -> Menus */
				__( 'Privacy policy page updated successfully. Remember to <a href="%s">update your menus</a>!' ),
				'customize.php?autofocus[panel]=nav_menus'
			),
			'updated'
		);
	} elseif ( 'create-privacy-page' === $action ) {

		$privacy_policy_page_content = WP_Privacy_Policy_Content::get_default_content();
		$privacy_policy_page_id = wp_insert_post(
			array(
				'post_title'   => __( 'Privacy Policy' ),
				'post_status'  => 'draft',
				'post_type'    => 'page',
				'post_content' => $privacy_policy_page_content,
			),
			true
		);

		if ( is_wp_error( $privacy_policy_page_id ) ) {
			add_settings_error(
				'page_for_privacy_policy',
				'page_for_privacy_policy',
				__( 'Unable to create privacy policy page.' ),
				'error'
			);
		} else {
			update_option( 'wp_page_for_privacy_policy', $privacy_policy_page_id );

			wp_redirect( admin_url( 'post.php?post=' . $privacy_policy_page_id . '&action=edit' ) );
			exit;
		}
	}
}

// If a privacy policy page ID is available, make sure the page actually exists. If not, display an error.
$privacy_policy_page_exists = false;
$privacy_policy_page_id     = (int) get_option( 'wp_page_for_privacy_policy' );

if ( ! empty( $privacy_policy_page_id ) ) {

	$privacy_policy_page = get_post( $privacy_policy_page_id );

	if ( ! $privacy_policy_page instanceof WP_Post ) {
		add_settings_error(
			'page_for_privacy_policy',
			'page_for_privacy_policy',
			__( 'The currently selected privacy policy page does not exist. Please create or select new page.' ),
			'error'
		);
	} else {
		if ( 'trash' === $privacy_policy_page->post_status ) {
			add_settings_error(
				'page_for_privacy_policy',
				'page_for_privacy_policy',
				sprintf(
					/* translators: URL to Pages Trash */
					__( 'The currently selected privacy policy page is in the trash. Please create or select new privacy policy page or <a href="%s">restore the current page</a>.' ),
					'edit.php?post_status=trash&post_type=page'
				),
				'error'
			);
		} else {
			$privacy_policy_page_exists = true;
		}
	}
}

get_current_screen()->add_help_tab( array(
	'id'      => 'privacy',
	'title'   => __( 'Privacy' ),
	'content' => '<p>' . __( 'This page provides settings with which you can manage your site&#8217;s privacy policy.' ) . '</p>',
) );

get_current_screen()->set_help_sidebar(
	'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
	'<p>' . __( '<a href="#">Documentation on privacy</a>' ) . '</p>'
);

require_once( ABSPATH . 'wp-admin/admin-header.php' );

?>
<div class="wrap">
<?php

if ( isset( $_GET['wp-suggested-policy-content'] ) ) {

	?>
	<h1><?php _e( 'Privacy Policy Guide' ); ?></h1>
	<div class="wp-suggested-policy-content">
		<?php WP_Privacy_Policy_Content::privacy_policy_guide(); ?>
	</div>
	<?php

} else {

?>
	<h1><?php _e( 'Privacy Settings' ); ?></h1>
	<h2><?php _e( 'Privacy Policy page' ); ?></h2>
	<p>
		<?php _e( 'As a website owner, you may need to follow national or international privacy laws. For example, you may need to create and display a privacy policy.' ); ?>
		<?php _e( 'If you already have a privacy policy page, please select it below. If not, create one.' ); ?>
	</p>
	<p>
		<?php _e( 'The new page will include help and suggestions for your privacy policy.' ); ?>
		<?php _e( 'However, it is your responsibility to use those resources correctly, to provide the information that your privacy policy requires, and to keep that information current and accurate.' ); ?>
	</p>
	<p>
		<?php _e( 'After your privacy policy page is set, we suggest that you edit it. On the edit page screen you will find additional privacy information added by your themes and plugins.' ); ?>
		<?php _e( 'We would also suggest reviewing your privacy policy from time to time, especially after an update. There may be changes or new suggested information for you to consider adding to your policy.' ); ?>
	</p>
	<?php
	if ( $privacy_policy_page_exists ) {
		$edit_href = add_query_arg(
			array(
				'post'   => $privacy_policy_page_id,
				'action' => 'edit',
			),
			admin_url( 'post.php' )
		);

		$view_href = get_permalink( $privacy_policy_page_id );
		?>
		<p class="tools-privacy-edit"><strong>
			<?php
			printf(
				/* translators: 1: URL to edit page, 2: URL to view page */
				__( '<a href="%1$s">Edit</a> or <a href="%2$s">view</a> your privacy policy page content.' ),
				$edit_href,
				$view_href
			);
			?>
		</strong></p>
		<?php
	}
	?>
	<hr>
	<table class="form-table tools-privacy-policy-page">
		<tr>
			<th scope="row">
				<?php
				if ( $privacy_policy_page_exists ) {
					_e( 'Change your Privacy Policy page' );
				} else {
					_e( 'Select a Privacy Policy page' );
				}
				?>
			</th>
			<td>
				<form method="post" action="">
					<label for="page_for_privacy_policy">
						<?php _e( 'Either select an existing page:' ); ?>
					</label>
					<input type="hidden" name="action" value="set-privacy-page" />
					<?php
					wp_dropdown_pages(
						array(
							'name'              => 'page_for_privacy_policy',
							'show_option_none'  => __( '&mdash; Select &mdash;' ),
							'option_none_value' => '0',
							'selected'          => $privacy_policy_page_id,
							'post_status'       => array( 'draft', 'publish' ),
						)
					);

					wp_nonce_field( 'set-privacy-page' );

					submit_button( __( 'Use This Page' ), 'primary', 'submit', false, array( 'id' => 'set-page' ) );
					?>
				</form>

				<form method="post" action="">
					<input type="hidden" name="action" value="create-privacy-page" />
					<span>
						<?php _e( 'Or create a new page:' ); ?>
					</span>
					<?php
					wp_nonce_field( 'create-privacy-page' );

					submit_button( __( 'Create New Page' ), 'primary', 'submit', false, array( 'id' => 'create-page' ) );
					?>
				</form>
			</td>
		</tr>
	</table>
</div>
<?php
} // End if/else isset( $_GET['wp-suggested-policy-content'] ).

include( ABSPATH . 'wp-admin/admin-footer.php' );