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<?php |
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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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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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*/ |
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function widget( $args, $instance ) { |
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// Sets a unique id for dropdown |
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$instance['dropdown'] = empty( $instance['dropdown'] ) ? 0 : $args['widget_id']; |
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|
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if ( $list = pll_the_languages( array_merge( $instance, array( 'echo' => 0 ) ) ) ) { |
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$title = empty( $instance['title'] ) ? '' : $instance['title']; |
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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$title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
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|
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echo $args['before_widget']; |
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if ( $title ) { |
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echo $args['before_title'] . $title . $args['after_title']; |
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} |
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echo $instance['dropdown'] ? $list : "<ul>\n" . $list . "</ul>\n"; |
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echo $args['after_widget']; |
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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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function update( $new_instance, $old_instance ) { |
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$instance['title'] = strip_tags( $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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*/ |
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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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$this->get_field_id( 'title' ), |
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esc_html__( 'Title:', 'polylang' ), |
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$this->get_field_name( 'title' ), |
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esc_attr( $instance['title'] ) |
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); |
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|
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$fields = ''; |
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foreach ( PLL_Switcher::get_switcher_options( 'widget' ) as $key => $str ) { |
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$fields .= sprintf( |
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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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$this->get_field_id( $key ), |
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$this->get_field_name( $key ), |
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$instance[ $key ] ? ' checked="checked"' : '', |
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esc_html( $str ), |
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in_array( $key, array( 'show_names', 'show_flags', 'hide_current' ) ) ? ' class="no-dropdown-' . $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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'pll-' . $key |
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); |
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} |
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|
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echo $fields; |
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|
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// FIXME echoing script in form is not very clean |
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// but it does not work if enqueued properly : |
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// clicking save on a widget makes this code unreachable for the just saved widget ( ?! ) |
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$this->admin_print_script(); |
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} |
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|
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/** |
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* Add javascript to control the language switcher options |
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* |
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* @since 1.3 |
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*/ |
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public function admin_print_script() { |
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static $done = false; |
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|
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if ( $done ) { |
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return; |
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} |
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|
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$done = true; ?> |
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<script type='text/javascript'> |
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//<![CDATA[ |
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jQuery( document ).ready( function( $ ) { |
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function pll_toggle( a, test ) { |
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test ? a.show() : a.hide(); |
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} |
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|
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// Remove all options if dropdown is checked |
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$( '.widgets-sortables,.control-section-sidebar' ).on( 'change', '.pll-dropdown', function() { |
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var this_id = $( this ).parent().parent().parent().children( '.widget-id' ).attr( 'value' ); |
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pll_toggle( $( '.no-dropdown-' + this_id ), 'checked' != $( this ).attr( 'checked' ) ); |
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} ); |
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|
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// Disallow unchecking both show names and show flags |
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var options = ['-show_flags', '-show_names']; |
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$.each( options, function( i, v ) { |
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$( '.widgets-sortables,.control-section-sidebar' ).on( 'change', '.pll' + v, function() { |
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var this_id = $( this ).parent().parent().parent().children( '.widget-id' ).attr( 'value' ); |
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if ( 'checked' != $( this ).attr( 'checked' ) ) { |
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$( '#widget-' + this_id + options[ 1-i ] ).prop( 'checked', 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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</script><?php |
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} |
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} |
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