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$container = [

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'id' => "wpforms-{$form_id}-field_{$field_id}-quantity",

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'class' => [ 'wpforms-payment-quantity' ],

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'attr' => [

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'name' => "wpforms[quantities][{$field_id}]",

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'data' => [],

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];

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$is_modern = ! empty( $field['style'] ) && $field['style'] === 'modern';

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// Add a class for Choices.js initialization.

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if ( $is_modern ) {

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$container['class'][] = 'choicesjs-select';

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$container['data']['size-class'] = 'wpforms-payment-quantity';

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$container['data']['search-enabled'] = $this->is_quantity_choicesjs_search_enabled( $field );

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$container['data']['remove-items-enabled'] = false;

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}

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// Add required attribute.

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if ( ! empty( $field['required'] ) ) {

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$container['attr']['required'] = 'required';

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}

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// Preselect default if no other choices were marked as default.

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printf(

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'<select %s>',

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wpforms_html_attributes( $container['id'], $container['class'], $container['data'], $container['attr'] ) // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped

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);

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// Reset Max quantity in case minimum is higher.

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$field['max_quantity'] = max( (int) $field['min_quantity'], (int) $field['max_quantity'] );

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$default = $field['properties']['quantity'] ?? $field['min_quantity'];

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for ( $option = $field['min_quantity']; $option <= $field['max_quantity']; $option++ ) {

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printf(

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'<option value="%1$s" %2$s >%3$s</option>', // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped

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esc_attr( $option ),

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selected( $option, $default, false ),

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esc_html( $option )

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);

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}

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echo '</select>';

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}

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/**

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* Add class to the builder field preview.

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* @since 1.8.7

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* @param string $css Class names.

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* @param array $field Field properties.

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* @return string

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public function preview_field_class( $css, $field ) {

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if ( $field['type'] !== $this->type ) {

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return $css;

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}

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if ( $this->is_payment_quantities_enabled( $field ) ) {

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$css .= ' payment-quantity-enabled';

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}

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return $css;

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}

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/**

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* Determine if payment quantities enabled.

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* @since 1.8.7

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* @param array $field_settings Field settings.

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* @return bool

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protected function is_payment_quantities_enabled( $field_settings ) {

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if ( empty( $field_settings['enable_quantity'] ) ) {

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return false;

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}

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// Quantity available only for `single` format of the Single payment field.

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if ( $field_settings['type'] === 'payment-single' && $field_settings['format'] !== 'single' ) {

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return false;

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}

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// Otherwise return true.

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return true;

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}

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/**

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* Get field payment submitted quantity.

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* @since 1.8.7

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* @param array $field Field data.

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* @param array $form_data Form data and settings.

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* @return int

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protected function get_submitted_field_quantity( $field, $form_data ) {

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// phpcs:disable WordPress.Security.NonceVerification.Missing

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$has_submitted_quantity = isset( $_POST['wpforms']['quantities'][ $field['id'] ] );

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$submitted_quantity = $has_submitted_quantity ? (int) $_POST['wpforms']['quantities'][ $field['id'] ] : 0;

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// phpcs:enable WordPress.Security.NonceVerification.Missing

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if ( ! $has_submitted_quantity && isset( $form_data['quantities'][ $field['id'] ] ) ) {

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$submitted_quantity = (int) $form_data['quantities'][ $field['id'] ];

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}

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$min_quantity = (int) $field['min_quantity'];

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// Verify submitted quantity value.

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if ( $submitted_quantity >= $min_quantity && $submitted_quantity <= (int) $field['max_quantity'] ) {

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return $submitted_quantity;

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}

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// Otherwise return a minimum quantity.

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return $min_quantity;

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}

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}

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