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<?php
namespace Gravity_Forms\Gravity_Forms\Settings\Fields;
use ArrayAccess;
use Gravity_Forms\Gravity_Forms\Settings\Settings;
use GFCommon;
defined( 'ABSPATH' ) || die();
class Base implements ArrayAccess {
/**
* Field type.
*
* @since 2.5
*
* @var string
*/
public $type;
/**
* Field name.
*
* @since 2.5
*
* @var string
*/
public $name;
/**
* Field label.
*
* @since 2.5
*
* @var string
*/
public $label;
/**
* Field CSS class.
*
* @since 2.5
*
* @var string
*/
public $class;
/**
* Field requirement.
*
* @since 2.5
*
* @var bool
*/
public $required = false;
/**
* Nested fields for field.
*
* @since 2.5
*
* @var Base{}
*/
public $fields = array();
/**
* Child inputs for field.
*
* @since 2.5
*
* @var Base{}
*/
public $inputs = array();
/**
* Default value of field.
*
* @since 2.5
*
* @var string|array
*/
public $default_value;
/**
* Dependencies required to display field.
*
* @since 2.5
*
* @var array
*/
public $dependency;
/**
* Function to run when field is saved.
* Returns field value.
*
* @since 2.5
*
* @var callable
*/
public $save_callback;
/**
* Function to run when field is being validated.
*
* @since 2.5
*
* @var callable
*/
public $validation_callback;
/**
* Legacy add-on method to call when a field is being validated.
*
* @since 2.5
*
* @var callable
*/
public $legacy_validation_callback;
/**
* @var Settings
*/
public $settings;
/**
* Field error message.
*
* @since 2.5
*
* @var string|false
*/
private $error = false;
/**
* Current function rendering field.
*
* @since 2.5
*
* @var callable
*/
protected static $current_render_callback;
/**
* Initialize field.
*
* @since 2.5
*
* @param array $props Field properties.
* @param Settings $settings Settings instance.
*/
public function __construct( $props, $settings ) {
// Set Settings framework instance.
$this->settings = $settings;
// Loop through properties, save to instance.
foreach ( $props as $prop => $value ) {
// Handle default value.
if ( $prop === 'value' ) {
$this->default_value = $value;
continue;
}
$this->{ $prop } = $value;
}
}
/**
* Register scripts to enqueue when displaying field.
*
* @since 2.5
*
* @return array
*/
public function scripts() {
return array();
}
/**
* Register styles to enqueue when displaying field.
*
* @since 2.5
*
* @return array
*/
public function styles() {
return array();
}
// # RENDER METHODS ------------------------------------------------------------------------------------------------
/**
* Render field.
*
* @since 2.5
*
* @return string
*/
public function prepare_markup() {
if ( isset( $this->callback ) && is_callable( $this->callback ) && self::$current_render_callback !== $this->callback ) {
self::$current_render_callback = $this->callback;
$html = call_user_func( $this->callback, $this, false );
self::$current_render_callback = false;
} else {
$html = $this->markup();
}
// If field has nested fields, display.
if ( ! empty( $this->fields ) ) {
$html .= '<fieldset class="gform-settings-nested-fields">';
foreach ( $this->fields as $field ) {
ob_start();
$this->settings->render_field( $field );
$html .= ob_get_contents();
ob_end_clean();
}
$html .= '</fieldset>';
}
return $html;
}
/**
* Prepare field markup.
*
* @since 2.5
*
* @return string
*/
public function markup() {
return '';
}
/**
* Returns a set of HTML attributes to be added to the HTML element.
*
* @since 2.5
*
* @param array $default Default set of attributes.
*
* @return array
*/
public function get_attributes( $default = array() ) {
// Define default attributes.
$default_atts = array(
'class' => '',
'default_value' => '', // Default value that should be selected or entered for the field.
);
// Add additional default attributes.
switch ( $this->type ) {
case 'select':
$default_atts['choices'] = array();
break;
case 'checkbox':
$default_atts['checked'] = false;
$default_atts['checkbox_label'] = '';
$default_atts['choices'] = array();
break;
default:
break;
}
/**
* Each nonstandard property will be extracted from the $props array so it is not auto-output in the field HTML
*
* @param array $field The current field meta to be parsed.
*/
$excluded_atts = apply_filters(
'gaddon_no_output_field_properties',
array(
'default_value', 'label', 'toggle_label', 'choices', 'feedback_callback', 'checked', 'checkbox_label', 'value', 'type',
'validation_callback', 'hidden', 'tooltip', 'dependency', 'messages', 'name', 'args',
'exclude_field_types', 'field_type', 'after_input', 'input_type', 'icon', 'save_callback',
'enable_custom_value', 'enable_custom_key', 'merge_tags', 'key_field', 'value_field', 'callback', 'labels',
'input_types', 'settings', 'inputs', 'fields', 'no_choices', 'enhanced_ui', 'description'
), $this
);
// Merge field properties with default attributes.
$atts = wp_parse_args( $this, $default_atts );
$atts['id'] = rgempty( 'id', $atts ) ? rgar( $atts, 'name' ) : rgar( $atts, 'id' );
$atts['id'] = str_replace( '[]', null, $atts['id'] );
$atts['required'] = ( $atts['required'] === true ) ? 'required' : null;
// Remove disabled property.
if ( isset( $atts['disabled'] ) && $atts['disabled'] === false ) {
unset( $atts['disabled'] );
}
// Remove excluded attributes.
foreach ( $atts as $key => $value ) {
if ( in_array( $key, $excluded_atts ) ) {
unset( $atts[ $key ] );
}
}
// Add default attributes.
foreach ( $default as $key => $value ) {
if ( isset( $atts[ $key ] ) ) {
$atts[ $key ] = $value . $atts[ $key ];
} else {
$atts[ $key ] = $value;
}
}
// Prepare attributes as strings.
$return = array();
foreach ( $atts as $att => $value ) {
if ( ! in_array( $value, array( 'disabled', 'readonly' ) ) && ( is_callable( $value ) || empty( $value ) ) ) {
continue;
}
$return[ $att ] = "{$att}='" . esc_attr( $value ) . "'";
}
return $return;
}
/**
* Parses the properties of a field choice and returns a set of HTML attributes to be added to the HTML element.
*
* @since 2.5
*
* @param array $choice Field choice meta.
* @param array $field_attributes Field attributes.
* @param array $default_attributes Default attributes for choice.
*
* @return array
*/
public static function get_choice_attributes( $choice, $field_attributes = array(), $default_attributes = array() ) {
// Use field attributes as a base for the choice attributes.
$atts = $field_attributes;
// Loop through each choice property, add to the attributes.
foreach ( $choice as $prop => $value ) {
// Choice properties to remove.
$excluded_atts = array(
'default_value', 'label', 'checked', 'value', 'type',
'validation_callback', 'required', 'tooltip', 'icon'
);
if ( $prop === 'disabled' && $value === false ) {
unset( $atts[ $prop ] );
} elseif ( in_array( $prop, $excluded_atts ) || is_array( $value ) ) {
unset( $atts[ $prop ] );
} else {
$atts[ $prop ] = "{$prop}='" . esc_attr( $value ) . "'";
}
}
// Adding default attributes: create new attribute or prepend to existing.
foreach ( $default_attributes as $attr_name => $attr_value ) {
if ( isset( $atts[ $attr_name ] ) ) {
$atts[ $attr_name ] = str_replace( "{$attr_name}='", "{$attr_name}='{$attr_value}", $atts[ $attr_name ] );
} else {
$atts[ $attr_name ] = "{$attr_name}='" . esc_attr( $attr_value ) . "'";
}
}
return $atts;
}
/**
* Get describer element(s) for field.
*
* @since 2.5
*
* @return string
*/
public function get_describer() {
// Prepare error and description IDs.
$error_id = sprintf( 'error-%s', esc_attr( $this->name ) );
$description_id = $this->get_description() ? sprintf( 'description-%s', esc_attr( $this->name ) ) : '';
return $this->get_error() ? implode( ', ', array( $error_id, $description_id ) ) : $description_id;
}
/**
* Renders the description text for a field.
*
* @since 2.5
*
* @return string
*/
public function get_description() {
return isset( $this->description ) ? sprintf( '<span class="gform-settings-description" id="description-%s">%s</span>', $this->name, $this->description ) : '';
}
/**
* Gets the classes to apply to the field container.
*
* @since 2.5
*
* @return string
*/
public function get_container_classes() {
// Prepare feedback.
$error = $this->get_error();
$is_invalid = ! empty( $error );
$value = $this->get_value();
$is_feedback_valid = null;
// Prepare container classes.
$feedback_callback = ( $this->type == 'text' ) ? rgar( $this, 'feedback_callback' ) : null;
if ( is_callable( $feedback_callback ) ) {
$is_feedback_valid = call_user_func_array( $feedback_callback, array( $value, $this ) );
}
$container_classes = array( 'gform-settings-input__container' );
if ( is_bool( $is_feedback_valid ) ) {
$container_classes[] = $is_feedback_valid ? 'gform-settings-input__container--feedback-success' : 'gform-settings-input__container--feedback-error';
}
if ( is_string( $is_feedback_valid ) ) {
$container_classes[] = sprintf( 'gform-settings-input__container--feedback-%s', $is_feedback_valid );
}
if ( $is_invalid ) { $container_classes[] = 'gform-settings-input__container--invalid'; }
if ( isset( $this->append ) ) { $container_classes[] = 'gform-settings-input__container--with-append'; }
if ( strpos( $this->class, 'merge-tag-support' ) !== false ) { $container_classes[] = 'gform-settings-input__container--with-merge-tag'; }
return implode( ' ', $container_classes );
}
/**
* Determines if any of the available field choices have an icon.
*
* @since 2.5
*
* @param array $choices
*
* @return bool
*/
public static function has_icons( $choices = array() ) {
foreach ( $choices as $choice ) {
if ( rgar( $choice, 'icon' ) ) {
return true;
}
}
return false;
}
/**
* Determines if any of the available field choices have a tag.
*
* @since 2.5.6.4
*
* @param array $choices
*
* @return bool
*/
public static function has_tag( $choices = array() ) {
foreach ( $choices as $choice ) {
if ( rgar( $choice, 'tag' ) ) {
return true;
}
}
return false;
}
// # VALIDATION METHODS --------------------------------------------------------------------------------------------
/**
* Validate posted field value.
* Run defined callback.
*
* @since 2.5
*
* @deprecated Deprecated since 2.5-beta-3. Use handle_validation() instead.
*
* @param array|bool|string $value Posted field value.
*/
public function validate( $value ) {
_deprecated_function( __METHOD__, '2.5-beta-3', '\Gravity_Forms\Gravity_Forms\Settings\Fields\Base::handle_validation()' );
$this->handle_validation( $value );
}
/**
* Validate posted field value.
* Run defined callback.
*
* @since 2.5-beta-3
*
* @param array|bool|string $value Posted field value.
*/
public function handle_validation( $value ) {
// If field has a custom validation callback, call it.
if ( is_callable( $this->validation_callback ) ) {
call_user_func( $this->validation_callback, $this, $value );
return;
}
if ( is_callable( $this->legacy_validation_callback ) ) {
call_user_func( $this->legacy_validation_callback, $this, $this->settings->get_posted_values() );
return;
}
// Validate field.
$this->do_validation( $value );
}
/**
* Validate posted field value.
*
* @since 2.5
*
* @deprecated Deprecated since 2.5-beta-3 - use do_validation() instead.
*
* @param array|bool|string $value Posted field value.
*/
public function is_valid( $value ) {
_deprecated_function( __METHOD__, '2.5-beta-3', '\Gravity_Forms\Gravity_Forms\Settings\Fields\Base::do_validation()' );
$this->do_validation( $value );
}
/**
* Validate posted field value.
*
* @since 2.5-beta-3
*
* @param array|bool|string $value Posted field value.
*/
public function do_validation( $value ) {
// If field is required and value is empty, set error.
if ( $this->required && rgblank( $value ) ) {
$this->set_error( rgobj( $this, 'error_message' ) );
}
}
/**
* Determine if the current choice is a match for the submitted field value.
*
* @since 2.5
*
* @param array $choice The choice properties.
* @param string|array $value The submitted field value.
*
* @return bool
*/
public static function is_choice_valid( $choice, $value ) {
$choice_value = isset( $choice['value'] ) ? $choice['value'] : $choice['label'];
return is_array( $value ) ? in_array( $choice_value, $value ) : $choice_value == $value;
}
/**
* Get error message for field.
*
* @since 2.5
*
* @return string
*/
public function get_error() {
return $this->error;
}
/**
* Gets the validation error icon.
*
* @since 2.5
*
* @return string
*/
public function get_error_icon() {
// Get field error.
$error = $this->get_error();
return $error ? sprintf( '<div class="gform-settings-validation__error" id="error-%s">%s</div>', $this->name, $error ) : '';
}
/**
* Set error message for field.
*
* @since 2.5
*
* @param string $error_message Error message.
*/
public function set_error( $error_message = '' ) {
// If no error message is provided, use default.
if ( ! $error_message ) {
$error_message = esc_html__( 'This field is required.', 'gravityforms' );
}
$this->error = $error_message;
}
// # HELPER METHODS ------------------------------------------------------------------------------------------------
/**
* Helper method to return choices for field.
*
* @since 2.5
*
* @param array|callable|bool $choices Existing choices. Defaults to field property.
*
* @return array
*/
public function get_choices( $choices = false ) {
// Get choices property, if not provided.
if ( ! $choices ) {
$choices = rgobj( $this, 'choices' );
}
// If no choices exist, return.
if ( ! $choices ) {
return array();
}
// If this is a callable, get the return value.
if ( is_callable( $choices ) ) {
return call_user_func( $choices, $this );
} elseif ( is_array( $choices ) ) {
return $choices;
}
return array();
}
/**
* Helper method to retrieve field value.
*
* @since 2.5
*
* @return array|bool|string
*/
public function get_value() {
return $this->settings->get_value( $this->name, $this->default_value );
}
/**
* Get field value before saving.
*
* @since 2.5
*
* @param array $field_values Posted field values.
* @param array|bool|string $field_value Posted value for field.
*
* @return array
*/
public function save_field( $field_values, $field_value ) {
// If field has a save callback, call it.
if ( is_callable( $this->save_callback ) ) {
$field_value = call_user_func( $this->save_callback, $this, $field_value );
} else {
$field_value = $this->save( $field_value );
}
$name = $this->get_parsed_name();
if ( is_array( $name ) ) {
return GFCommon::set_array_value( $field_values, $name, $field_value );
}
$field_values[ $name ] = $field_value;
return $field_values;
}
/**
* Modify field value before saving.
*
* @since 2.5
*
* @param array|bool|string $value
*
* @return array|bool|string
*/
public function save( $value ) {
return $value;
}
// # ARRAY ACCESS METHODS ------------------------------------------------------------------------------------------
/**
* Whether or not an offset exists
*
* @since 2.5
*
* @param mixed $offset An offset to check for.
*
* @return bool
*/
public function offsetExists( $offset ) {
return isset( $this->$offset );
}
/**
* Returns the value at specified offset.
*
* @since 2.5
*
* @param mixed $offset The offset to retrieve.
*
* @return mixed
*/
public function offsetGet( $offset ) {
if ( ! isset( $this->$offset ) ) {
$this->$offset = '';
}
return $this->$offset;
}
/**
* Assigns a value to the specified offset
*
* @since 2.5
*
* @param mixed $offset The offset to assign the value to.
* @param mixed $data The value to set.
*/
public function offsetSet( $offset, $data ) {
if ( $offset === null ) {
$this[] = $data;
} else {
$this->$offset = $data;
}
}
/**
* Unset an offset
*
* @since 2.5
*
* @param mixed $offset The offset to unset.
*/
public function offsetUnset( $offset ) {
unset( $this->$offset );
}
/**
* Parses the field's name to determine whether it's a simple string or a multi-dimensional array.
*
* Examples:
* - A string of gravityformsapi will return gravityformsapi.
* - A string of gravityformsapi[log_level] will return an array of [ 'gravityformsapi', 'log_level' ].
*
* @since 2.5
*
* @return string|array
*/
public function get_parsed_name() {
if ( ! is_string( $this->name ) ) {
return '';
}
// String doesn't have any psuedo array elements, which means it's just a normal string. Return it.
if ( false === strpos( $this->name, '[' ) ) {
return $this->name;
}
// Run a regex match to find all the values from the string.
preg_match_all( '/([^\[]+)?\[([^\[]*?)\]/s', $this->name, $matches );
// No matches found for some reason, return a blank string.
if ( empty( $matches ) ) {
return '';
}
// Sometimes, the array of bracket matches is just a single empty value. If so, return the first match.
if ( ! empty( $matches[1] ) && count( $matches[2] ) <= 1 && empty( $matches[2][0] ) ) {
return array_shift( $matches[1] );
}
/**
* The setting name (non-brackets) is stored in a different match array than the bracket values. Merge
* them together in order to return all of them (and filter any empty values).
*/
$results = array_merge( array_filter( $matches[1] ), array_filter( $matches[2] ) );
return array_values( $results );
}
}
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