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Editing: class-payment-dropdown.php

<?php

/**
 * Dropdown payment field.
 *
 * @since 1.3.1
 */
class WPForms_Field_Payment_Select extends WPForms_Field {

/**
	 * Classic (old) style.
	 *
	 * @since 1.6.1
	 *
	 * @var string
	 */
	const STYLE_CLASSIC = 'classic';

/**
	 * Modern style.
	 *
	 * @since 1.6.1
	 *
	 * @var string
	 */
	const STYLE_MODERN = 'modern';

/**
	 * Primary class constructor.
	 *
	 * @since 1.3.1
	 * @since 1.6.1 Added a `Modern` style select support - frontend CSS/JS enqueues.
	 */
	public function init() {

// Define field type information.
		$this->name     = esc_html__( 'Dropdown Items', 'wpforms' );
		$this->type     = 'payment-select';
		$this->icon     = 'fa-caret-square-o-down';
		$this->order    = 70;
		$this->group    = 'payment';
		$this->defaults = array(
			1 => array(
				'label'   => esc_html__( 'First Item', 'wpforms' ),
				'value'   => '10.00',
				'default' => '',
			),
			2 => array(
				'label'   => esc_html__( 'Second Item', 'wpforms' ),
				'value'   => '25.00',
				'default' => '',
			),
			3 => array(
				'label'   => esc_html__( 'Third Item', 'wpforms' ),
				'value'   => '50.00',
				'default' => '',
			),
		);

// Define additional field properties.
		add_filter( 'wpforms_field_properties_' . $this->type, array( $this, 'field_properties' ), 5, 3 );

// Form frontend CSS enqueues.
		add_action( 'wpforms_frontend_css', array( $this, 'enqueue_frontend_css' ) );

// Form frontend JS enqueues.
		add_action( 'wpforms_frontend_js', array( $this, 'enqueue_frontend_js' ) );
	}

/**
	 * Define additional field properties.
	 *
	 * @since 1.5.0
	 * @since 1.6.1 Added a `Modern` style select support - additional class for container.
	 *
	 * @param array $properties Field properties.
	 * @param array $field      Field settings.
	 * @param array $form_data  Form data and settings.
	 *
	 * @return array
	 */
	public function field_properties( $properties, $field, $form_data ) {

// Remove primary input.
		unset( $properties['inputs']['primary'] );

// Define data.
		$form_id  = absint( $form_data['id'] );
		$field_id = absint( $field['id'] );
		$choices  = $field['choices'];

// Set options container (<select>) properties.
		$properties['input_container'] = array(
			'class' => array( 'wpforms-payment-price' ),
			'data'  => array(),
			'id'    => "wpforms-{$form_id}-field_{$field_id}",
			'attr'  => array(
				'name' => "wpforms[fields][{$field_id}]",
			),
		);

// Set properties.
		foreach ( $choices as $key => $choice ) {

$properties['inputs'][ $key ] = array(
				'container' => array(
					'attr'  => array(),
					'class' => array( "choice-{$key}" ),
					'data'  => array(),
					'id'    => '',
				),
				'label'     => array(
					'attr'  => array(
						'for' => "wpforms-{$form_id}-field_{$field_id}_{$key}",
					),
					'class' => array( 'wpforms-field-label-inline' ),
					'data'  => array(),
					'id'    => '',
					'text'  => $choice['label'],
				),
				'attr'      => array(
					'value' => $choice['value'],
					'data'  => array(
						'amount' => wpforms_format_amount( wpforms_sanitize_amount( $choice['value'] ) ),
					),
 				),
				'class'     => array(),
				'data'      => array(),
				'id'        => "wpforms-{$form_id}-field_{$field_id}_{$key}",
				'required'  => ! empty( $field['required'] ) ? 'required' : '',
				'default'   => isset( $choice['default'] ),
			);
		}

// Add class that changes the field size.
		if ( ! empty( $field['size'] ) ) {
			$properties['input_container']['class'][] = 'wpforms-field-' . esc_attr( $field['size'] );
		}

// Required class for pagebreak validation.
		if ( ! empty( $field['required'] ) ) {
			$properties['input_container']['class'][] = 'wpforms-field-required';
		}

// Add additional class for container.
		if (
			! empty( $field['style'] ) &&
			in_array( $field['style'], array( self::STYLE_CLASSIC, self::STYLE_MODERN ), true )
		) {
			$properties['container']['class'][] = "wpforms-field-select-style-{$field['style']}";
		}

return $properties;
	}

/**
	 * Get the value, that is used to prefill via dynamic or fallback population.
	 * Based on field data and current properties.
	 *
	 * @since 1.5.0
	 *
	 * @param string $raw_value  Value from a GET param, always a string.
	 * @param string $input      Represent a subfield inside the field. May be empty.
	 * @param array  $properties Field properties.
	 * @param array  $field      Current field specific data.
	 *
	 * @return array Modified field properties.
	 */
	protected function get_field_populated_single_property_value( $raw_value, $input, $properties, $field ) {
		/*
		 * When the form is submitted we get from Fallback only values (choice ID).
		 * As payment-dropdown field doesn't support 'show_values' option -
		 * we should transform value into label to check against using general logic in parent method.
		 */

if (
			! is_string( $raw_value ) ||
			empty( $field['choices'] ) ||
			! is_array( $field['choices'] )
		) {
			return $properties;
		}

// The form submits only the choice ID, so shortcut for Dynamic when we have a label there.
		if ( ! is_numeric( $raw_value ) ) {
			return parent::get_field_populated_single_property_value( $raw_value, $input, $properties, $field );
		}

if (
			! empty( $field['choices'][ $raw_value ]['label'] ) &&
			! empty( $field['choices'][ $raw_value ]['value'] )
		) {
			return parent::get_field_populated_single_property_value( $field['choices'][ $raw_value ]['label'], $input, $properties, $field );
		}

return $properties;
	}

/**
	 * Field options panel inside the builder.
	 *
	 * @since 1.3.1
	 * @since 1.6.1 Added a `Modern` style select support - new `Style` option.
	 *
	 * @param array $field Field settings.
	 */
	public function field_options( $field ) {
		/*
		 * Basic field options.
		 */

// Options open markup.
		$this->field_option( 'basic-options', $field, array( 'markup' => 'open' ) );

// Label.
		$this->field_option( 'label', $field );

// Choices option.
		$this->field_option( 'choices_payments', $field );

// Description.
		$this->field_option( 'description', $field );

// Required toggle.
		$this->field_option( 'required', $field );

// Options close markup.
		$this->field_option( 'basic-options', $field, array( 'markup' => 'close' ) );

/*
		 * Advanced field options.
		 */

// Options open markup.
		$this->field_option( 'advanced-options', $field, array( 'markup' => 'open' ) );

// Style.
		$lbl = $this->field_element(
			'label',
			$field,
			array(
				'slug'    => 'style',
				'value'   => esc_html__( 'Style', 'wpforms' ),
				'tooltip' => esc_html__( 'Classic style is the default one generated by your browser. Modern has a fresh look and displays all selected options in a single row.', 'wpforms' ),
			),
			false
		);

$fld = $this->field_element(
			'select',
			$field,
			array(
				'slug'    => 'style',
				'value'   => ! empty( $field['style'] ) ? $field['style'] : self::STYLE_CLASSIC,
				'options' => array(
					self::STYLE_CLASSIC => esc_html__( 'Classic', 'wpforms' ),
					self::STYLE_MODERN  => esc_html__( 'Modern', 'wpforms' ),
				),
			),
			false
		);

$this->field_element(
			'row',
			$field,
			array(
				'slug'    => 'style',
				'content' => $lbl . $fld,
			)
		);

// Size.
		$this->field_option( 'size', $field );

// Placeholder.
		$this->field_option( 'placeholder', $field );

// Hide label.
		$this->field_option( 'label_hide', $field );

// Custom CSS classes.
		$this->field_option( 'css', $field );

// Options close markup.
		$this->field_option( 'advanced-options', $field, array( 'markup' => 'close' ) );
	}

/**
	 * Field preview inside the builder.
	 *
	 * @since 1.3.1
	 * @since 1.6.1 Added a `Modern` style select support - arguments for choices.
	 *
	 * @param array $field Field settings.
	 */
	public function field_preview( $field ) {

// Label.
		$this->field_preview_option( 'label', $field );

// Prepare arguments.
		$args['modern'] = false;

if (
			! empty( $field['style'] ) &&
			self::STYLE_MODERN === $field['style']
		) {
			$args['modern'] = true;
			$args['class']  = 'choicesjs-select';
		}

// Choices.
		$this->field_preview_option( 'choices', $field, $args );

// Description.
		$this->field_preview_option( 'description', $field );
	}

/**
	 * Field display on the form front-end.
	 *
	 * @since 1.3.1
	 * @since 1.5.0 Converted to a new format, where all the data are taken not from $deprecated, but field properties.
	 * @since 1.6.1 Added a `Modern` style select support - fake placeholder, `data-custom-properties` attribute, container and size classes.
	 *
	 * @param array $field      Field data and settings.
	 * @param array $deprecated Deprecated array of field attributes.
	 * @param array $form_data  Form data and settings.
	 */
	public function field_display( $field, $deprecated, $form_data ) {

$container         = $field['properties']['input_container'];
		$field_placeholder = ! empty( $field['placeholder'] ) ? $field['placeholder'] : '';
		$is_modern         = ! empty( $field['style'] ) && self::STYLE_MODERN === $field['style'];

if ( ! empty( $field['required'] ) ) {
			$container['attr']['required'] = 'required';
		}

// Add a class for Choices.js initialization.
		if ( $is_modern ) {
			$container['class'][] = 'choicesjs-select';

// Add a size-class to data attribute - it is used when Choices.js is initialized.
			if ( ! empty( $field['size'] ) ) {
				$container['data']['size-class'] = 'wpforms-field-row wpforms-field-' . sanitize_html_class( $field['size'] );
			}
		}

$choices     = $field['properties']['inputs'];
		$has_default = false;

// Check to see if any of the options were selected by default.
		foreach ( $choices as $choice ) {
			if ( ! empty( $choice['default'] ) ) {
				$has_default = true;
				break;
			}
		}

// Fake placeholder for Modern style.
		if ( $is_modern && empty( $field_placeholder ) ) {
			$first_choices     = reset( $choices );
			$field_placeholder = $first_choices['label']['text'];
		}

// Preselect default if no other choices were marked as default.
		printf(
			'<select %s>',
			wpforms_html_attributes( $container['id'], $container['class'], $container['data'], $container['attr'] )
		);

// Optional placeholder.
		if ( ! empty( $field_placeholder ) ) {
			printf(
				'<option value="" class="placeholder" disabled %s>%s</option>',
				selected( false, $has_default, false ),
				esc_html( $field_placeholder )
			);
		}

// Format string for option.
		if ( $is_modern ) {

// `data-custom-properties` - it's a Choices.js attribite and it store a copy of `data-amount` attribute.
			$option_format = '<option value="%1$s" data-amount="%2$s" data-custom-properties="%2$s" %3$s>%4$s</option>';

} else {
			$option_format = '<option value="%1$s" data-amount="%2$s" %3$s>%4$s</option>';
		}

// Build the select options.
		foreach ( $choices as $key => $choice ) {
			$amount = wpforms_format_amount( wpforms_sanitize_amount( $choice['attr']['value'] ) );

printf(
				$option_format, // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
				esc_attr( $key ),
				esc_attr( $amount ),
				selected( true, ! empty( $choice['default'] ), false ),
				esc_html( $choice['label']['text'] )
			);
		}

echo '</select>';
	}

/**
	 * Validate field on form submit.
	 *
	 * @since 1.3.1
	 *
	 * @param int    $field_id     Field ID.
	 * @param string $field_submit Submitted field value (selected option).
	 * @param array  $form_data    Form data and settings.
	 */
	public function validate( $field_id, $field_submit, $form_data ) {

// Basic required check - If field is marked as required, check for entry data.
		if ( ! empty( $form_data['fields'][ $field_id ]['required'] ) && empty( $field_submit ) ) {

wpforms()->process->errors[ $form_data['id'] ][ $field_id ] = wpforms_get_required_label();
		}

// Validate that the option selected is real.
		if ( ! empty( $field_submit ) && empty( $form_data['fields'][ $field_id ]['choices'][ $field_submit ] ) ) {

wpforms()->process->errors[ $form_data['id'] ][ $field_id ] = esc_html__( 'Invalid payment option', 'wpforms' );
		}
	}

/**
	 * Format and sanitize field.
	 *
	 * @since 1.3.1
	 *
	 * @param int    $field_id     Field ID.
	 * @param string $field_submit Submitted field value (selected option).
	 * @param array  $form_data    Form data and settings.
	 */
	public function format( $field_id, $field_submit, $form_data ) {

$choice_label = '';
		$field        = $form_data['fields'][ $field_id ];
		$name         = ! empty( $field['label'] ) ? sanitize_text_field( $field['label'] ) : '';

// Fetch the amount.
		if ( ! empty( $field['choices'][ $field_submit ]['value'] ) ) {
			$amount = wpforms_sanitize_amount( $field['choices'][ $field_submit ]['value'] );
		} else {
			$amount = 0;
		}

$value = wpforms_format_amount( $amount, true );

if ( empty( $field_submit ) ) {
			$value = '';
		} elseif ( ! empty( $field['choices'][ $field_submit ]['label'] ) ) {
			$choice_label = sanitize_text_field( $field['choices'][ $field_submit ]['label'] );
			$value        = $choice_label . ' - ' . $value;
		}

wpforms()->process->fields[ $field_id ] = array(
			'name'         => $name,
			'value'        => $value,
			'value_choice' => $choice_label,
			'value_raw'    => sanitize_text_field( $field_submit ),
			'amount'       => wpforms_format_amount( $amount ),
			'amount_raw'   => $amount,
			'currency'     => wpforms_setting( 'currency', 'USD' ),
			'id'           => absint( $field_id ),
			'type'         => $this->type,
		);
	}

/**
	 * Form frontend CSS enqueues.
	 *
	 * @since 1.6.1
	 *
	 * @param array $forms Forms on the current page.
	 */
	public function enqueue_frontend_css( $forms ) {

$has_modern_select = false;

foreach ( $forms as $form ) {
			if ( $this->is_field_style( $form, self::STYLE_MODERN ) ) {
				$has_modern_select = true;

break;
			}
		}

if ( $has_modern_select || wpforms()->frontend->assets_global() ) {
			$min = \wpforms_get_min_suffix();

wp_enqueue_style(
				'wpforms-choicesjs',
				WPFORMS_PLUGIN_URL . "assets/css/choices{$min}.css",
				array(),
				'9.0.1'
			);
		}
	}

/**
	 * Form frontend JS enqueues.
	 *
	 * @since 1.6.1
	 *
	 * @param array $forms Forms on the current page.
	 */
	public function enqueue_frontend_js( $forms ) {

$has_modern_select = false;

foreach ( $forms as $form ) {
			if ( $this->is_field_style( $form, self::STYLE_MODERN ) ) {
				$has_modern_select = true;

break;
			}
		}

if ( $has_modern_select || wpforms()->frontend->assets_global() ) {
			wp_enqueue_script(
				'wpforms-choicesjs',
				WPFORMS_PLUGIN_URL . 'assets/js/choices.min.js',
				array(),
				'9.0.1',
				true
			);

$config = array(
				'removeItemButton'  => true,
				'shouldSort'        => false,
				'loadingText'       => esc_html__( 'Loading...', 'wpforms' ),
				'noResultsText'     => esc_html__( 'No results found.', 'wpforms' ),
				'noChoicesText'     => esc_html__( 'No choices to choose from.', 'wpforms' ),
				'itemSelectText'    => esc_attr__( 'Press to select.', 'wpforms' ),
				'uniqueItemText'    => esc_html__( 'Only unique values can be added.', 'wpforms' ),
				'customAddItemText' => esc_html__( 'Only values matching specific conditions can be added.', 'wpforms' ),
			);

// Allow theme/plugin developers to modify the provided or add own Choices.js settings.
			$config = apply_filters( 'wpforms_field_select_choicesjs_config', $config, $forms, $this );

wp_localize_script(
				'wpforms-choicesjs',
				'wpforms_choicesjs_config',
				$config
			);
		}
	}

/**
	 * Whether the provided form has a dropdown field with a specified style.
	 *
	 * @since 1.6.1
	 *
	 * @param array  $form  Form data.
	 * @param string $style Desired field style.
	 *
	 * @return bool
	 */
	protected function is_field_style( $form, $style ) {

$is_field_style = false;

if ( empty( $form['fields'] ) ) {

return $is_field_style;
		}

foreach ( (array) $form['fields'] as $field ) {

if (
				! empty( $field['type'] ) &&
				$field['type'] === $this->type &&
				! empty( $field['style'] ) &&
				sanitize_key( $style ) === $field['style']
			) {
				$is_field_style = true;
				break;
			}
		}

return $is_field_style;
	}
}

new WPForms_Field_Payment_Select();