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<?php |
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/** |
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* @package Polylang |
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*/ |
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|
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/** |
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* The language switcher widget |
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* |
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* @since 0.1 |
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*/ |
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class PLL_Widget_Languages extends WP_Widget { |
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|
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/** |
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* Constructor |
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* |
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* @since 0.1 |
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*/ |
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public function __construct() { |
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parent::__construct( |
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'polylang', |
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__( 'Language switcher', 'polylang' ), |
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array( |
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'description' => __( 'Displays a language switcher', 'polylang' ), |
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'customize_selective_refresh' => true, |
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) |
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); |
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} |
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|
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/** |
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* Displays the widget |
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* |
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* @since 0.1 |
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* |
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* @param array $args Display arguments including before_title, after_title, before_widget, and after_widget. |
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* @param array $instance The settings for the particular instance of the widget |
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* @return void |
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*/ |
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public function widget( $args, $instance ) { |
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// Sets a unique id for dropdown. |
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$instance['dropdown'] = empty( $instance['dropdown'] ) ? 0 : $this->id; |
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$instance['echo'] = 0; |
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$instance['raw'] = 0; |
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$list = pll_the_languages( $instance ); |
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|
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if ( $list ) { |
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$title = empty( $instance['title'] ) ? '' : $instance['title']; |
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|
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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$title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
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|
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echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput |
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|
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if ( $title ) { |
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echo $args['before_title'] . $title . $args['after_title']; // phpcs:ignore WordPress.Security.EscapeOutput |
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} |
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|
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// The title may be filtered: Strip out HTML and make sure the aria-label is never empty. |
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$aria_label = trim( wp_strip_all_tags( $title ) ); |
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if ( ! $aria_label ) { |
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$aria_label = __( 'Choose a language', 'polylang' ); |
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} |
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|
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if ( $instance['dropdown'] ) { |
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echo '<label class="screen-reader-text" for="' . esc_attr( 'lang_choice_' . $instance['dropdown'] ) . '">' . esc_html( $aria_label ) . '</label>'; |
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echo $list; // phpcs:ignore WordPress.Security.EscapeOutput |
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} else { |
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$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml'; |
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|
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/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */ |
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$format = apply_filters( 'navigation_widgets_format', $format ); |
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|
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if ( 'html5' === $format ) { |
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echo '<nav aria-label="' . esc_attr( $aria_label ) . '">'; |
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} |
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|
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echo "<ul>\n" . $list . "</ul>\n"; // phpcs:ignore WordPress.Security.EscapeOutput |
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|
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if ( 'html5' === $format ) { |
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echo '</nav>'; |
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} |
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} |
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|
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echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput |
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} |
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} |
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|
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/** |
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* Updates the widget options |
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* |
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* @since 0.4 |
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* |
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* @param array $new_instance New settings for this instance as input by the user via form() |
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* @param array $old_instance Old settings for this instance |
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* @return array Settings to save or bool false to cancel saving |
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*/ |
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public function update( $new_instance, $old_instance ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable |
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$instance = array( 'title' => sanitize_text_field( $new_instance['title'] ) ); |
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foreach ( array_keys( PLL_Switcher::get_switcher_options( 'widget' ) ) as $key ) { |
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$instance[ $key ] = ! empty( $new_instance[ $key ] ) ? 1 : 0; |
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} |
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|
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return $instance; |
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} |
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|
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/** |
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* Displays the widget form. |
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* |
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* @since 0.4 |
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* |
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* @param array $instance Current settings. |
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* @return string |
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*/ |
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public function form( $instance ) { |
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// Default values |
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$instance = wp_parse_args( (array) $instance, array_merge( array( 'title' => '' ), PLL_Switcher::get_switcher_options( 'widget', 'default' ) ) ); |
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|
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// Title |
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printf( |
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'<p><label for="%1$s">%2$s</label><input class="widefat" id="%1$s" name="%3$s" type="text" value="%4$s" /></p>', |
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esc_attr( $this->get_field_id( 'title' ) ), |
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esc_html__( 'Title:', 'polylang' ), |
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esc_attr( $this->get_field_name( 'title' ) ), |
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esc_attr( $instance['title'] ) |
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); |
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|
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foreach ( PLL_Switcher::get_switcher_options( 'widget' ) as $key => $str ) { |
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printf( |
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'<div%5$s%6$s><input type="checkbox" class="checkbox %7$s" id="%1$s" name="%2$s"%3$s /><label for="%1$s">%4$s</label></div>', |
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esc_attr( $this->get_field_id( $key ) ), |
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esc_attr( $this->get_field_name( $key ) ), |
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checked( $instance[ $key ], true, false ), |
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esc_html( $str ), |
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in_array( $key, array( 'show_names', 'show_flags', 'hide_current' ) ) ? sprintf( ' class="no-dropdown-%s"', esc_attr( $this->id ) ) : '', |
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( ! empty( $instance['dropdown'] ) && in_array( $key, array( 'show_names', 'show_flags', 'hide_current' ) ) ? ' style="display:none;"' : '' ), |
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esc_attr( 'pll-' . $key ) |
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); |
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} |
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|
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return ''; // Because the parent class returns a string, however not used. |
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} |
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} |
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|
