| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* The language switcher widget |
| 5 |
* |
| 6 |
* @since 0.1 |
| 7 |
*/ |
| 8 |
class PLL_Widget_Languages extends WP_Widget { |
| 9 |
|
| 10 |
/** |
| 11 |
* Constructor |
| 12 |
* |
| 13 |
* @since 0.1 |
| 14 |
*/ |
| 15 |
function __construct() { |
| 16 |
parent::__construct( |
| 17 |
'polylang', |
| 18 |
__( 'Language Switcher', 'polylang' ), |
| 19 |
array( |
| 20 |
'description' => __( 'Displays a language switcher', 'polylang' ), |
| 21 |
'customize_selective_refresh' => true, |
| 22 |
) |
| 23 |
); |
| 24 |
} |
| 25 |
|
| 26 |
/** |
| 27 |
* Displays the widget |
| 28 |
* |
| 29 |
* @since 0.1 |
| 30 |
* |
| 31 |
* @param array $args Display arguments including before_title, after_title, before_widget, and after_widget. |
| 32 |
* @param array $instance The settings for the particular instance of the widget |
| 33 |
*/ |
| 34 |
function widget( $args, $instance ) { |
| 35 |
// Sets a unique id for dropdown |
| 36 |
$instance['dropdown'] = empty( $instance['dropdown'] ) ? 0 : $args['widget_id']; |
| 37 |
|
| 38 |
if ( $list = pll_the_languages( array_merge( $instance, array( 'echo' => 0 ) ) ) ) { |
| 39 |
$title = empty( $instance['title'] ) ? '' : $instance['title']; |
| 40 |
/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
| 41 |
$title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); |
| 42 |
|
| 43 |
echo $args['before_widget']; |
| 44 |
if ( $title ) { |
| 45 |
echo $args['before_title'] . $title . $args['after_title']; |
| 46 |
} |
| 47 |
if ( $instance['dropdown'] ) { |
| 48 |
echo '<label class="screen-reader-text" for="' . esc_attr( 'lang_choice_' . $instance['dropdown'] ) . '">' . esc_html__( 'Choose a language', 'polylang' ). '</label>'; |
| 49 |
echo $list; |
| 50 |
} else { |
| 51 |
echo "<ul>\n" . $list . "</ul>\n"; |
| 52 |
} |
| 53 |
echo $args['after_widget']; |
| 54 |
} |
| 55 |
} |
| 56 |
|
| 57 |
/** |
| 58 |
* Updates the widget options |
| 59 |
* |
| 60 |
* @since 0.4 |
| 61 |
* |
| 62 |
* @param array $new_instance New settings for this instance as input by the user via form() |
| 63 |
* @param array $old_instance Old settings for this instance |
| 64 |
* @return array Settings to save or bool false to cancel saving |
| 65 |
*/ |
| 66 |
function update( $new_instance, $old_instance ) { |
| 67 |
$instance['title'] = strip_tags( $new_instance['title'] ); |
| 68 |
foreach ( array_keys( PLL_Switcher::get_switcher_options( 'widget' ) ) as $key ) { |
| 69 |
$instance[ $key ] = ! empty( $new_instance[ $key ] ) ? 1 : 0; |
| 70 |
} |
| 71 |
|
| 72 |
return $instance; |
| 73 |
} |
| 74 |
|
| 75 |
/** |
| 76 |
* Displays the widget form |
| 77 |
* |
| 78 |
* @since 0.4 |
| 79 |
* |
| 80 |
* @param array $instance Current settings |
| 81 |
*/ |
| 82 |
function form( $instance ) { |
| 83 |
// Default values |
| 84 |
$instance = wp_parse_args( (array) $instance, array_merge( array( 'title' => '' ), PLL_Switcher::get_switcher_options( 'widget', 'default' ) ) ); |
| 85 |
|
| 86 |
// Title |
| 87 |
printf( |
| 88 |
'<p><label for="%1$s">%2$s</label><input class="widefat" id="%1$s" name="%3$s" type="text" value="%4$s" /></p>', |
| 89 |
$this->get_field_id( 'title' ), |
| 90 |
esc_html__( 'Title:', 'polylang' ), |
| 91 |
$this->get_field_name( 'title' ), |
| 92 |
esc_attr( $instance['title'] ) |
| 93 |
); |
| 94 |
|
| 95 |
$fields = ''; |
| 96 |
foreach ( PLL_Switcher::get_switcher_options( 'widget' ) as $key => $str ) { |
| 97 |
$fields .= sprintf( |
| 98 |
'<div%5$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>', |
| 99 |
$this->get_field_id( $key ), |
| 100 |
$this->get_field_name( $key ), |
| 101 |
$instance[ $key ] ? ' checked="checked"' : '', |
| 102 |
esc_html( $str ), |
| 103 |
in_array( $key, array( 'show_names', 'show_flags', 'hide_current' ) ) ? ' class="no-dropdown-' . $this->id . '"' : '', |
| 104 |
! empty( $instance['dropdown'] ) && in_array( $key, array( 'show_names', 'show_flags', 'hide_current' ) ) ? ' style="display:none;"' : '', |
| 105 |
'pll-' . $key |
| 106 |
); |
| 107 |
} |
| 108 |
|
| 109 |
echo $fields; |
| 110 |
|
| 111 |
// FIXME echoing script in form is not very clean |
| 112 |
// but it does not work if enqueued properly : |
| 113 |
// clicking save on a widget makes this code unreachable for the just saved widget ( ?! ) |
| 114 |
$this->admin_print_script(); |
| 115 |
} |
| 116 |
|
| 117 |
/** |
| 118 |
* Add javascript to control the language switcher options |
| 119 |
* |
| 120 |
* @since 1.3 |
| 121 |
*/ |
| 122 |
public function admin_print_script() { |
| 123 |
static $done = false; |
| 124 |
|
| 125 |
if ( $done ) { |
| 126 |
return; |
| 127 |
} |
| 128 |
|
| 129 |
$done = true; ?> |
| 130 |
<script type='text/javascript'> |
| 131 |
//<![CDATA[ |
| 132 |
jQuery( document ).ready( function( $ ) { |
| 133 |
function pll_toggle( a, test ) { |
| 134 |
test ? a.show() : a.hide(); |
| 135 |
} |
| 136 |
|
| 137 |
// Remove all options if dropdown is checked |
| 138 |
$( '.widgets-sortables,.control-section-sidebar' ).on( 'change', '.pll-dropdown', function() { |
| 139 |
var this_id = $( this ).parent().parent().parent().children( '.widget-id' ).attr( 'value' ); |
| 140 |
pll_toggle( $( '.no-dropdown-' + this_id ), 'checked' != $( this ).attr( 'checked' ) ); |
| 141 |
} ); |
| 142 |
|
| 143 |
// Disallow unchecking both show names and show flags |
| 144 |
var options = ['-show_flags', '-show_names']; |
| 145 |
$.each( options, function( i, v ) { |
| 146 |
$( '.widgets-sortables,.control-section-sidebar' ).on( 'change', '.pll' + v, function() { |
| 147 |
var this_id = $( this ).parent().parent().parent().children( '.widget-id' ).attr( 'value' ); |
| 148 |
if ( 'checked' != $( this ).attr( 'checked' ) ) { |
| 149 |
$( '#widget-' + this_id + options[ 1-i ] ).prop( 'checked', true ); |
| 150 |
} |
| 151 |
} ); |
| 152 |
} ); |
| 153 |
} ); |
| 154 |
//]]> |
| 155 |
</script><?php |
| 156 |
} |
| 157 |
} |
| 158 |
|
