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<?php
/**
* Creates and validates field parameters.
*
* @package Kirki
* @category Core
* @author Aristeides Stathopoulos
* @copyright Copyright (c) 2017, Aristeides Stathopoulos
* @license http://opensource.org/licenses/https://opensource.org/licenses/MIT
* @since 1.0
*/
/**
* Please do not use this class directly.
* You should instead extend it per-field-type.
*/
class Kirki_Field {
/**
* An array of the field arguments.
*
* @access protected
* @var array
*/
protected $args = array();
/**
* The ID of the kirki_config we're using.
*
* @see Kirki_Config
* @access protected
* @var string
*/
protected $kirki_config = 'global';
/**
* Thje capability required so that users can edit this field.
*
* @access protected
* @var string
*/
protected $capability = 'edit_theme_options';
/**
* If we're using options instead of theme_mods
* and we want them serialized, this is the option that
* will saved in the db.
*
* @access protected
* @var string
*/
protected $option_name = '';
/**
* Custom input attributes (defined as an array).
*
* @access protected
* @var array
*/
protected $input_attrs = array();
/**
* Use "theme_mod" or "option".
*
* @access protected
* @var string
*/
protected $option_type = 'theme_mod';
/**
* The name of this setting (id for the db).
*
* @access protected
* @var string|array
*/
protected $settings = '';
/**
* Set to true if you want to disable all CSS output for this field.
*
* @access protected
* @var bool
*/
protected $disable_output = false;
/**
* The field type.
*
* @access protected
* @var string
*/
protected $type = 'kirki-generic';
/**
* Some fields require options to be set.
* We're whitelisting the property here
* and suggest you validate this in a child class.
*
* @access protected
* @var array
*/
protected $choices = array();
/**
* Assign this field to a section.
* Fields not assigned to a section will not be displayed in the customizer.
*
* @access protected
* @var string
*/
protected $section = '';
/**
* The default value for this field.
*
* @access protected
* @var string|array|bool
*/
protected $default = '';
/**
* Priority determines the position of a control inside a section.
* Lower priority numbers move the control to the top.
*
* @access protected
* @var int
*/
protected $priority = 10;
/**
* Unique ID for this field.
* This is auto-calculated from the $settings argument.
*
* @access protected
* @var string
*/
protected $id = '';
/**
* Use if you want to automatically generate CSS from this field's value.
*
* @see https://kirki.org/docs/arguments/output
* @access protected
* @var array
*/
protected $output = array();
/**
* Use to automatically generate postMessage scripts.
* Not necessary to use if you use 'transport' => 'auto'
* and have already set an array for the 'output' argument.
*
* @see https://kirki.org/docs/arguments/js_vars
* @access protected
* @var array
*/
protected $js_vars = array();
/**
* If you want to use a CSS compiler, then use this to set the variable names.
*
* @see https://kirki.org/docs/arguments/variables
* @access protected
* @var array
*/
protected $variables = array();
/**
* Text that will be used in a tooltip to provide extra info for this field.
*
* @access protected
* @var string
*/
protected $tooltip = '';
/**
* A custom callback to determine if the field should be visible or not.
*
* @access protected
* @var string|array
*/
protected $active_callback = '__return_true';
/**
* A custom sanitize callback that will be used to properly save the values.
*
* @access protected
* @var string|array
*/
protected $sanitize_callback = '';
/**
* Use 'refresh', 'postMessage' or 'auto'.
* 'auto' will automatically geberate any 'js_vars' from the 'output' argument.
*
* @access protected
* @var string
*/
protected $transport = 'refresh';
/**
* Define dependencies to show/hide this field based on the values of other fields.
*
* @access protected
* @var array
*/
protected $required = array();
/**
* Partial Refreshes array.
*
* @access protected
* @var array
*/
protected $partial_refresh = array();
/**
* The class constructor.
* Parses and sanitizes all field arguments.
* Then it adds the field to Kirki::$fields.
*
* @access public
* @param string $config_id The ID of the config we want to use.
* Defaults to "global".
* Configs are handled by the Kirki_Config class.
* @param array $args The arguments of the field.
*/
public function __construct( $config_id = 'global', $args = array() ) {
if ( isset( $args['setting'] ) && ! empty( $args['setting'] ) && ( ! isset( $args['settings'] ) || empty( $args['settings'] ) ) ) {
/* translators: %s represents the field ID where the error occurs. */
_doing_it_wrong( __METHOD__, sprintf( esc_attr__( 'Typo found in field %s - setting instead of settings.', 'kirki' ), esc_attr( $args['settings'] ) ), '3.0.10' );
$args['settings'] = $args['setting'];
unset( $args['setting'] );
}
// In case the user only provides 1 argument,
// assume that the provided argument is $args and set $config_id = 'global'.
if ( is_array( $config_id ) && empty( $args ) ) {
/* translators: %1$s represents the field ID where the error occurs. %2$s is the URL in the documentation site. */
_doing_it_wrong( __METHOD__, sprintf( esc_attr__( 'Config not defined for field %1$s - See %2$s for details on how to properly add fields.', 'kirki' ), esc_attr( $args['settings'] ), 'https://aristath.github.io/kirki/docs/getting-started/fields.html' ), '3.0.10' );
$args = $config_id;
$config_id = 'global';
}
$args['kirki_config'] = $config_id;
$this->kirki_config = trim( esc_attr( $config_id ) );
if ( '' === $config_id ) {
/* translators: %1$s represents the field ID where the error occurs. %2$s is the URL in the documentation site. */
_doing_it_wrong( __METHOD__, sprintf( esc_attr__( 'Config not defined for field %1$s - See %2$s for details on how to properly add fields.', 'kirki' ), esc_attr( $args['settings'] ), 'https://aristath.github.io/kirki/docs/getting-started/fields.html' ), '3.0.10' );
$this->kirki_config = 'global';
}
// Get defaults from the class.
$defaults = get_class_vars( __CLASS__ );
// Get the config arguments, and merge them with the defaults.
$config_defaults = ( isset( Kirki::$config['global'] ) ) ? Kirki::$config['global'] : array();
if ( 'global' !== $this->kirki_config && isset( Kirki::$config[ $this->kirki_config ] ) ) {
$config_defaults = Kirki::$config[ $this->kirki_config ];
}
$config_defaults = ( is_array( $config_defaults ) ) ? $config_defaults : array();
foreach ( $config_defaults as $key => $value ) {
if ( isset( $defaults[ $key ] ) && ! empty( $value ) && $value !== $defaults[ $key ] ) {
$defaults[ $key ] = $value;
}
}
// Merge our args with the defaults.
$args = wp_parse_args( $args, $defaults );
// Set the class properties using the parsed args.
foreach ( $args as $key => $value ) {
$this->$key = $value;
}
$this->args = $args;
$this->set_field();
}
/**
* Processes the field arguments
*
* @access protected
*/
protected function set_field() {
$properties = get_class_vars( __CLASS__ );
// Some things must run before the others.
$this->set_option_name();
$this->set_option_type();
$this->set_settings();
// Sanitize the properties, skipping the ones that have already run above.
foreach ( $properties as $property => $value ) {
if ( in_array( $property, array( 'option_name', 'option_type', 'settings' ), true ) ) {
continue;
}
if ( method_exists( $this, 'set_' . $property ) ) {
$method_name = 'set_' . $property;
$this->$method_name();
}
}
// Get all arguments with their values.
$args = get_object_vars( $this );
foreach ( array_keys( $args ) as $key ) {
$args[ $key ] = $this->$key;
}
// Add the field to the static $fields variable properly indexed.
Kirki::$fields[ $this->settings ] = $args;
}
/**
* Escape $kirki_config.
*
* @access protected
*/
protected function set_kirki_config() {
$this->kirki_config = esc_attr( $this->kirki_config );
}
/**
* Escape $option_name.
*
* @access protected
*/
protected function set_option_name() {
$this->option_name = esc_attr( $this->option_name );
}
/**
* Escape the $section.
*
* @access protected
*/
protected function set_section() {
$this->section = sanitize_key( $this->section );
}
/**
* Escape the $section.
*
* @access protected
*/
protected function set_input_attrs() {
if ( ! is_array( $this->input_attrs ) ) {
$this->input_attrs = array();
}
}
/**
* Checks the capability chosen is valid.
* If not, then falls back to 'edit_theme_options'
*
* @access protected
*/
protected function set_capability() {
// Early exit if we're using 'edit_theme_options'.
if ( 'edit_theme_options' === $this->capability ) {
return;
}
// Escape & trim the capability.
$this->capability = trim( esc_attr( $this->capability ) );
}
/**
* Make sure we're using the correct option_type
*
* @access protected
*/
protected function set_option_type() {
// Take care of common typos.
if ( 'options' === $this->option_type ) {
$this->option_type = 'option';
}
// Take care of common typos.
if ( 'theme_mods' === $this->option_type ) {
/* translators: %1$s represents the field ID where the error occurs. */
_doing_it_wrong( __METHOD__, sprintf( esc_attr__( 'Typo found in field %s - "theme_mods" vs "theme_mod"', 'kirki' ), esc_attr( $this->settings ) ), '3.0.10' );
$this->option_type = 'theme_mod';
}
}
/**
* Modifications for partial refreshes.
*
* @access protected
*/
protected function set_partial_refresh() {
if ( ! is_array( $this->partial_refresh ) ) {
$this->partial_refresh = array();
}
foreach ( $this->partial_refresh as $id => $args ) {
if ( ! is_array( $args ) || ! isset( $args['selector'] ) || ! isset( $args['render_callback'] ) || ! is_callable( $args['render_callback'] ) ) {
/* translators: %1$s represents the field ID where the error occurs. */
_doing_it_wrong( __METHOD__, sprintf( esc_attr__( '"partial_refresh" invalid entry in field %s', 'kirki' ), esc_attr( $this->settings ) ), '3.0.10' );
unset( $this->partial_refresh[ $id ] );
continue;
}
}
if ( ! empty( $this->partial_refresh ) ) {
$this->transport = 'postMessage';
}
}
/**
* Sets the settings.
* If we're using serialized options it makes sure that settings are properly formatted.
* We'll also be escaping all setting names here for consistency.
*
* @access protected
*/
protected function set_settings() {
// If settings is not an array, temporarily convert it to an array.
// This is just to allow us to process everything the same way and avoid code duplication.
// if settings is not an array then it will not be set as an array in the end.
if ( ! is_array( $this->settings ) ) {
$this->settings = array(
'kirki_placeholder_setting' => $this->settings,
);
}
$settings = array();
foreach ( $this->settings as $setting_key => $setting_value ) {
$settings[ $setting_key ] = $setting_value;
// If we're using serialized options then we need to spice this up.
if ( 'option' === $this->option_type && '' !== $this->option_name && ( false === strpos( $setting_key, '[' ) ) ) {
$settings[ $setting_key ] = "{$this->option_name}[{$setting_value}]";
}
}
$this->settings = $settings;
if ( isset( $this->settings['kirki_placeholder_setting'] ) ) {
$this->settings = $this->settings['kirki_placeholder_setting'];
}
}
/**
* Sets the active_callback
* If we're using the $required argument,
* Then this is where the switch is made to our evaluation method.
*
* @access protected
*/
protected function set_active_callback() {
if ( is_array( $this->active_callback ) && ! is_callable( $this->active_callback ) ) {
if ( isset( $this->active_callback[0] ) ) {
$this->required = $this->active_callback;
}
}
if ( ! empty( $this->required ) ) {
$this->active_callback = array( 'Kirki_Active_Callback', 'evaluate' );
return;
}
// No need to proceed any further if we're using the default value.
if ( '__return_true' === $this->active_callback ) {
return;
}
// Make sure the function is callable, otherwise fallback to __return_true.
if ( ! is_callable( $this->active_callback ) ) {
$this->active_callback = '__return_true';
}
}
/**
* Sets the control type.
*
* @access protected
*/
protected function set_type() {
// Escape the control type (it doesn't hurt to be sure).
$this->type = esc_attr( $this->type );
}
/**
* Sets the $id.
* Setting the ID should happen after the 'settings' sanitization.
* This way we can also properly handle cases where the option_type is set to 'option'
* and we're using an array instead of individual options.
*
* @access protected
*/
protected function set_id() {
$this->id = sanitize_key( str_replace( '[', '-', str_replace( ']', '', $this->settings ) ) );
}
/**
* Sets the $choices.
*
* @access protected
*/
protected function set_choices() {
if ( ! is_array( $this->choices ) ) {
$this->choices = array();
}
}
/**
* Escapes the $disable_output.
*
* @access protected
*/
protected function set_disable_output() {
$this->disable_output = (bool) $this->disable_output;
}
/**
* Sets the $sanitize_callback
*
* @access protected
*/
protected function set_output() {
if ( empty( $this->output ) ) {
return;
}
if ( ! is_array( $this->output ) ) {
/* translators: The field ID where the error occurs. */
_doing_it_wrong( __METHOD__, sprintf( esc_attr__( '"output" invalid format in field %s. The "output" argument should be defined as an array of arrays.', 'kirki' ), esc_attr( $this->settings ) ), '3.0.10' );
$this->output = array(
array(
'element' => $this->output,
),
);
}
// Convert to array of arrays if needed.
if ( isset( $this->output['element'] ) ) {
/* translators: The field ID where the error occurs. */
_doing_it_wrong( __METHOD__, sprintf( esc_attr__( '"output" invalid format in field %s. The "output" argument should be defined as an array of arrays.', 'kirki' ), esc_attr( $this->settings ) ), '3.0.10' );
$this->output = array( $this->output );
}
foreach ( $this->output as $key => $output ) {
if ( empty( $output ) || ! isset( $output['element'] ) ) {
unset( $this->output[ $key ] );
continue;
}
if ( ! isset( $output['sanitize_callback'] ) && isset( $output['callback'] ) ) {
$this->output[ $key ]['sanitize_callback'] = $output['callback'];
}
// Convert element arrays to strings.
if ( isset( $output['element'] ) && is_array( $output['element'] ) ) {
$this->output[ $key ]['element'] = array_unique( $this->output[ $key ]['element'] );
sort( $this->output[ $key ]['element'] );
$this->output[ $key ]['element'] = implode( ',', $this->output[ $key ]['element'] );
}
}
}
/**
* Sets the $js_vars
*
* @access protected
*/
protected function set_js_vars() {
if ( ! is_array( $this->js_vars ) ) {
$this->js_vars = array();
}
// Check if transport is set to auto.
// If not, then skip the auto-calculations and exit early.
if ( 'auto' !== $this->transport ) {
return;
}
// Set transport to refresh initially.
// Serves as a fallback in case we failt to auto-calculate js_vars.
$this->transport = 'refresh';
$js_vars = array();
// Try to auto-generate js_vars.
// First we need to check if js_vars are empty, and that output is not empty.
if ( empty( $this->js_vars ) && ! empty( $this->output ) ) {
// Start going through each item in the $output array.
foreach ( $this->output as $output ) {
$output['function'] = ( isset( $output['function'] ) ) ? $output['function'] : 'style';
// If 'element' or 'property' are not defined, skip this.
if ( ! isset( $output['element'] ) || ! isset( $output['property'] ) ) {
continue;
}
if ( is_array( $output['element'] ) ) {
$output['element'] = implode( ',', $output['element'] );
}
// If there's a sanitize_callback defined skip this, unless we also have a js_callback defined.
if ( isset( $output['sanitize_callback'] ) && ! empty( $output['sanitize_callback'] ) && ! isset( $output['js_callback'] ) ) {
continue;
}
// If we got this far, it's safe to add this.
$js_vars[] = $output;
}
// Did we manage to get all the items from 'output'?
// If not, then we're missing something so don't add this.
if ( count( $js_vars ) !== count( $this->output ) ) {
return;
}
$this->js_vars = $js_vars;
$this->transport = 'postMessage';
}
}
/**
* Sets the $variables
*
* @access protected
*/
protected function set_variables() {
if ( ! is_array( $this->variables ) ) {
$variable = ( is_string( $this->variables ) && ! empty( $this->variables ) ) ? $this->variables : false;
$this->variables = array();
if ( $variable && empty( $this->variables ) ) {
$this->variables[0]['name'] = $variable;
}
}
}
/**
* Sets the $transport
*
* @access protected
*/
protected function set_transport() {
if ( 'postmessage' === trim( strtolower( $this->transport ) ) ) {
$this->transport = 'postMessage';
}
}
/**
* Sets the $required
*
* @access protected
*/
protected function set_required() {
if ( ! is_array( $this->required ) ) {
$this->required = array();
}
}
/**
* Sets the $priority
*
* @access protected
*/
protected function set_priority() {
$this->priority = absint( $this->priority );
}
}