From b8f7405450ab6407037ea619f9000cd186ea2efb Mon Sep 17 00:00:00 2001
From: Jb Audras <audrasjb@git.wordpress.org>
Date: Tue, 21 Dec 2021 18:50:36 +0000
Subject: [PATCH] Login and registration: Add a filter to allow to disable the
 Login screen language dropdown.

This change introduces the `display_login_language_dropdown` filter which allows to disable the Login screen language dropdown.

Follow-up to [52058].

Props rickcurran, audrasjb, ocean90, hellofromtonya, costdev, johnbillion.
Fixes #54675.


git-svn-id: https://develop.svn.wordpress.org/trunk@52404 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-login.php | 111 +++++++++++++++++++++++++----------------------
 1 file changed, 60 insertions(+), 51 deletions(-)

diff --git a/src/wp-login.php b/src/wp-login.php
index 0e13cc9112..31bbc4bfe3 100644
--- a/src/wp-login.php
+++ b/src/wp-login.php
@@ -312,58 +312,67 @@ function login_footer( $input_id = '' ) {
 	</div><?php // End of <div id="login">. ?>
 
 	<?php
-	$languages = get_available_languages();
-
-	if ( ! empty( $languages ) && ! $interim_login ) {
-		?>
-
-		<div class="language-switcher">
-			<form id="language-switcher" action="" method="get">
-
-				<label for="language-switcher-locales">
-					<span class="dashicons dashicons-translation" aria-hidden="true"></span>
-					<span class="screen-reader-text"><?php _e( 'Language' ); ?></span>
-				</label>
-
-				<?php
-				$args = array(
-					'id'                          => 'language-switcher-locales',
-					'name'                        => 'wp_lang',
-					'selected'                    => determine_locale(),
-					'show_available_translations' => false,
-					'explicit_option_en_us'       => true,
-					'languages'                   => $languages,
-				);
-
-				/**
-				 * Filters default arguments for the Languages select input on the login screen.
-				 *
-				 * @since 5.9.0
-				 *
-				 * @param array $args Arguments for the Languages select input on the login screen.
-				 */
-				wp_dropdown_languages( apply_filters( 'wp_login_language_switcher_args', $args ) );
-				?>
-
-				<?php if ( $interim_login ) { ?>
-					<input type="hidden" name="interim-login" value="1" />
-				<?php } ?>
-
-				<?php if ( isset( $_GET['redirect_to'] ) && '' !== $_GET['redirect_to'] ) { ?>
-					<input type="hidden" name="redirect_to" value="<?php echo esc_url_raw( $_GET['redirect_to'] ); ?>" />
-				<?php } ?>
-
-				<?php if ( isset( $_GET['action'] ) && '' !== $_GET['action'] ) { ?>
-					<input type="hidden" name="action" value="<?php echo esc_attr( $_GET['action'] ); ?>" />
-				<?php } ?>
-
-					<input type="submit" class="button button-primary" value="<?php esc_attr_e( 'Change' ); ?>">
-
-				</form>
-			</div>
-
-<?php } ?>
+	if (
+		! $interim_login &&
+		/**
+		 * Filters the Languages select input activation on the login screen.
+		 *
+		 * @since 5.9.0
+		 *
+		 * @param bool Whether to display the Languages select input on the login screen.
+		 */
+		apply_filters( 'display_login_language_dropdown', true )
+	) {
+		$languages = get_available_languages();
 
+		if ( ! empty( $languages ) ) {
+			?>
+			<div class="language-switcher">
+				<form id="language-switcher" action="" method="get">
+	
+					<label for="language-switcher-locales">
+						<span class="dashicons dashicons-translation" aria-hidden="true"></span>
+						<span class="screen-reader-text"><?php _e( 'Language' ); ?></span>
+					</label>
+	
+					<?php
+					$args = array(
+						'id'                          => 'language-switcher-locales',
+						'name'                        => 'wp_lang',
+						'selected'                    => determine_locale(),
+						'show_available_translations' => false,
+						'explicit_option_en_us'       => true,
+						'languages'                   => $languages,
+					);
+	
+					/**
+					 * Filters default arguments for the Languages select input on the login screen.
+					 *
+					 * @since 5.9.0
+					 *
+					 * @param array $args Arguments for the Languages select input on the login screen.
+					 */
+					wp_dropdown_languages( apply_filters( 'wp_login_language_switcher_args', $args ) );
+					?>
+	
+					<?php if ( $interim_login ) { ?>
+						<input type="hidden" name="interim-login" value="1" />
+					<?php } ?>
+	
+					<?php if ( isset( $_GET['redirect_to'] ) && '' !== $_GET['redirect_to'] ) { ?>
+						<input type="hidden" name="redirect_to" value="<?php echo esc_url_raw( $_GET['redirect_to'] ); ?>" />
+					<?php } ?>
+	
+					<?php if ( isset( $_GET['action'] ) && '' !== $_GET['action'] ) { ?>
+						<input type="hidden" name="action" value="<?php echo esc_attr( $_GET['action'] ); ?>" />
+					<?php } ?>
+	
+						<input type="submit" class="button button-primary" value="<?php esc_attr_e( 'Change' ); ?>">
+	
+					</form>
+				</div>
+		<?php } ?>
+	<?php } ?>
 	<?php
 
 	if ( ! empty( $input_id ) ) {