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<?php
/**
* Preview renderer for checkboxes field.
*
* @since 1.9.1
*/
final class WPCF_Field_Renderer_Preview_Checkboxes extends WPCF_Field_Renderer_Preview_Base {
/**
* Render preview for whole checkboxes field. Slightly confusingly, checkboxes fields are allways single
* and all options are part of one field value.
*
* @param mixed $value Single field value in the intermediate format (see data mappers for details)
*
* @return string Rendered HTML
*/
protected function render_single( $value ) {
$options = $this->field->get_definition()->get_field_options();
$output = array();
// Let each checkbox option definition handle how it should be displayed.
foreach( $options as $option ) {
$display_value = $option->get_display_value( $option->is_option_checked( $value ) );
if( !empty( $display_value ) ) {
$output[] = $display_value;
}
}
// Apply maximum count here
$max_item_count = $this->get_maximum_item_count();
$is_limited_by_max_count = ( 0 < $max_item_count && $max_item_count < count( $output ) );
if( $is_limited_by_max_count ) {
$output = array_slice( $output, 0, $this->get_maximum_item_count() );
}
$output = implode( $this->get_value_separator(), $output );
// We need to additionally apply a limit for maximum total length
// because if we only apply item length and count, and perhaps add separator and ellipsis at the end,
// the parent::render() method will see it as one item and it might add another ellipsis if
// output of this function hits the maximum total length limit there.
//
// Note: limit_by_maximum_total_length() should subtract the length of the ellipsis from the resulting
// total length, so we should be completely covered here.
$is_limited_by_max_total_length = $this->limit_by_maximum_total_length( $output );
$needs_separator = $is_limited_by_max_count && ! $is_limited_by_max_total_length;
$needs_ellipsis = ( $is_limited_by_max_count || $is_limited_by_max_total_length );
if( $needs_separator ) {
$output .= $this->get_value_separator();
}
if( $needs_ellipsis ) {
$output .= $this->get_ellipsis();
}
return sanitize_text_field( $output );
}
}