%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* @package Polylang
*/
/**
* Displays languages in a dropdown list
*
* @since 1.2
*/
class PLL_Walker_Dropdown extends Walker {
/**
* Database fields to use.
*
* @see https://developer.wordpress.org/reference/classes/walker/#properties Walker::$db_fields.
*
* @var array
*/
public $db_fields = array( 'parent' => 'parent', 'id' => 'id' );
/**
* Outputs one element
*
* @since 1.2
*
* @param string $output Passed by reference. Used to append additional content.
* @param stdClass $element The data object.
* @param int $depth Depth of the item.
* @param array $args An array of additional arguments.
* @param int $current_object_id ID of the current item.
* @return void
*/
public function start_el( &$output, $element, $depth = 0, $args = array(), $current_object_id = 0 ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
$value = $args['value'];
$output .= sprintf(
"\t" . '<option value="%1$s"%2$s%3$s>%4$s</option>' . "\n",
esc_attr( $element->$value ),
method_exists( $element, 'get_locale' ) ? sprintf( ' lang="%s"', esc_attr( $element->get_locale( 'display' ) ) ) : '',
selected( isset( $args['selected'] ) && $args['selected'] === $element->$value, true, false ),
esc_html( $element->name )
);
}
/**
* Overrides Walker::display_element as expects an object with a parent property
*
* @since 1.2
*
* @param stdClass $element Data object.
* @param array $children_elements List of elements to continue traversing.
* @param int $max_depth Max depth to traverse.
* @param int $depth Depth of current element.
* @param array $args An array of arguments.
* @param string $output Passed by reference. Used to append additional content.
* @return void
*/
public function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
$element = (object) $element; // Make sure we have an object
$element->parent = $element->id = 0; // Don't care about this
parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
}
/**
* Starts the output of the dropdown list
*
* @since 1.2
* @since 2.6.7 Use $max_depth and ...$args parameters to follow the move of WP 5.3
*
* List of parameters accepted in $args:
*
* flag => display the selected language flag in front of the dropdown if set to 1, defaults to 0
* value => the language field to use as value attribute, defaults to 'slug'
* selected => the selected value, mandatory
* name => the select name attribute, defaults to 'lang_choice'
* id => the select id attribute, defaults to $args['name']
* class => the class attribute
* disabled => disables the dropdown if set to 1
*
* @param array $elements An array of elements.
* @param int $max_depth The maximum hierarchical depth.
* @param mixed ...$args Additional arguments.
* @return string The hierarchical item output.
*/
public function walk( $elements, $max_depth, ...$args ) { // // phpcs:ignore WordPressVIPMinimum.Classes.DeclarationCompatibility.DeclarationCompatibility
$output = '';
if ( is_array( $max_depth ) ) { // @phpstan-ignore-line
// Backward compatibility with Polylang < 2.6.7
if ( WP_DEBUG ) {
trigger_error( // phpcs:ignore WordPress.PHP.DevelopmentFunctions
sprintf(
'%s was called incorrectly. The method expects an integer as second parameter since Polylang 2.6.7',
__METHOD__
)
);
}
$args = $max_depth;
$max_depth = -1;
} else {
$args = isset( $args[0] ) ? $args[0] : array();
}
$args = wp_parse_args( $args, array( 'value' => 'slug', 'name' => 'lang_choice' ) );
if ( ! empty( $args['flag'] ) ) {
$current = wp_list_filter( $elements, array( $args['value'] => $args['selected'] ) );
$lang = reset( $current );
$output = sprintf(
'<span class="pll-select-flag">%s</span>',
empty( $lang->flag ) ? esc_html( $lang->slug ) : $lang->flag
);
}
$output .= sprintf(
'<select name="%1$s"%2$s%3$s%4$s>' . "\n" . '%5$s' . "\n" . '</select>' . "\n",
esc_attr( $args['name'] ),
isset( $args['id'] ) && ! $args['id'] ? '' : ' id="' . ( empty( $args['id'] ) ? esc_attr( $args['name'] ) : esc_attr( $args['id'] ) ) . '"',
empty( $args['class'] ) ? '' : ' class="' . esc_attr( $args['class'] ) . '"',
disabled( empty( $args['disabled'] ), false, false ),
parent::walk( $elements, $max_depth, $args )
);
return $output;
}
}
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