Viewing file:  class-wp-customize-setting.php (15.93 KB) -rw-rw-rw-
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<?php
/**
* WordPress Customize Setting classes
*
* @package WordPress
* @subpackage Customize
* @since 3.4.0
*/
/**
* Customize Setting class.
*
* Handles saving and sanitizing of settings.
*
* @since 3.4.0
*
* @see WP_Customize_Manager
*/
class WP_Customize_Setting {
/**
* @access public
* @var WP_Customize_Manager
*/
public $manager;
/**
* @access public
* @var string
*/
public $id;
/**
* @access public
* @var string
*/
public $type = 'theme_mod';
/**
* Capability required to edit this setting.
*
* @var string
*/
public $capability = 'edit_theme_options';
/**
* Feature a theme is required to support to enable this setting.
*
* @access public
* @var string
*/
public $theme_supports = '';
public $default = '';
public $transport = 'refresh';
/**
* Server-side sanitization callback for the setting's value.
*
* @var callback
*/
public $sanitize_callback = '';
public $sanitize_js_callback = '';
/**
* Whether or not the setting is initially dirty when created.
*
* This is used to ensure that a setting will be sent from the pane to the
* preview when loading the Customizer. Normally a setting only is synced to
* the preview if it has been changed. This allows the setting to be sent
* from the start.
*
* @since 4.2.0
* @access public
* @var bool
*/
public $dirty = false;
protected $id_data = array();
/**
* Constructor.
*
* Any supplied $args override class property defaults.
*
* @since 3.4.0
*
* @param WP_Customize_Manager $manager
* @param string $id An specific ID of the setting. Can be a
* theme mod or option name.
* @param array $args Setting arguments.
*/
public function __construct( $manager, $id, $args = array() ) {
$keys = array_keys( get_object_vars( $this ) );
foreach ( $keys as $key ) {
if ( isset( $args[ $key ] ) )
$this->$key = $args[ $key ];
}
$this->manager = $manager;
$this->id = $id;
// Parse the ID for array keys.
$this->id_data[ 'keys' ] = preg_split( '/\[/', str_replace( ']', '', $this->id ) );
$this->id_data[ 'base' ] = array_shift( $this->id_data[ 'keys' ] );
// Rebuild the ID.
$this->id = $this->id_data[ 'base' ];
if ( ! empty( $this->id_data[ 'keys' ] ) )
$this->id .= '[' . implode( '][', $this->id_data[ 'keys' ] ) . ']';
if ( $this->sanitize_callback )
add_filter( "customize_sanitize_{$this->id}", $this->sanitize_callback, 10, 2 );
if ( $this->sanitize_js_callback )
add_filter( "customize_sanitize_js_{$this->id}", $this->sanitize_js_callback, 10, 2 );
}
/**
* The ID for the current blog when the preview() method was called.
*
* @since 4.2.0
* @access protected
* @var int
*/
protected $_previewed_blog_id;
/**
* Return true if the current blog is not the same as the previewed blog.
*
* @since 4.2.0
* @access public
*
* @return bool|null Returns null if preview() has not been called yet.
*/
public function is_current_blog_previewed() {
if ( ! isset( $this->_previewed_blog_id ) ) {
return null;
}
return ( get_current_blog_id() === $this->_previewed_blog_id );
}
/**
* Original non-previewed value stored by the preview method.
*
* @see WP_Customize_Setting::preview()
* @since 4.1.1
* @var mixed
*/
protected $_original_value;
/**
* Handle previewing the setting.
*
* @since 3.4.0
*/
public function preview() {
if ( ! isset( $this->_original_value ) ) {
$this->_original_value = $this->value();
}
if ( ! isset( $this->_previewed_blog_id ) ) {
$this->_previewed_blog_id = get_current_blog_id();
}
switch( $this->type ) {
case 'theme_mod' :
add_filter( 'theme_mod_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
break;
case 'option' :
if ( empty( $this->id_data[ 'keys' ] ) )
add_filter( 'pre_option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
else {
add_filter( 'option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
add_filter( 'default_option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
}
break;
default :
/**
* Fires when the {@see WP_Customize_Setting::preview()} method is called for settings
* not handled as theme_mods or options.
*
* The dynamic portion of the hook name, `$this->id`, refers to the setting ID.
*
* @since 3.4.0
*
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
do_action( "customize_preview_{$this->id}", $this );
/**
* Fires when the {@see WP_Customize_Setting::preview()} method is called for settings
* not handled as theme_mods or options.
*
* The dynamic portion of the hook name, `$this->type`, refers to the setting type.
*
* @since 4.1.0
*
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
do_action( "customize_preview_{$this->type}", $this );
}
}
/**
* Callback function to filter the theme mods and options.
*
* If switch_to_blog() was called after the preview() method, and the current
* blog is now not the same blog, then this method does a no-op and returns
* the original value.
*
* @since 3.4.0
* @uses WP_Customize_Setting::multidimensional_replace()
*
* @param mixed $original Old value.
* @return mixed New or old value.
*/
public function _preview_filter( $original ) {
if ( ! $this->is_current_blog_previewed() ) {
return $original;
}
$undefined = new stdClass(); // symbol hack
$post_value = $this->post_value( $undefined );
if ( $undefined === $post_value ) {
$value = $this->_original_value;
} else {
$value = $post_value;
}
return $this->multidimensional_replace( $original, $this->id_data['keys'], $value );
}
/**
* Check user capabilities and theme supports, and then save
* the value of the setting.
*
* @since 3.4.0
*
* @return false|null False if cap check fails or value isn't set.
*/
final public function save() {
$value = $this->post_value();
if ( ! $this->check_capabilities() || ! isset( $value ) )
return false;
/**
* Fires when the WP_Customize_Setting::save() method is called.
*
* The dynamic portion of the hook name, `$this->id_data['base']` refers to
* the base slug of the setting name.
*
* @since 3.4.0
*
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
do_action( 'customize_save_' . $this->id_data[ 'base' ], $this );
$this->update( $value );
}
/**
* Fetch and sanitize the $_POST value for the setting.
*
* @since 3.4.0
*
* @param mixed $default A default value which is used as a fallback. Default is null.
* @return mixed The default value on failure, otherwise the sanitized value.
*/
final public function post_value( $default = null ) {
return $this->manager->post_value( $this, $default );
}
/**
* Sanitize an input.
*
* @since 3.4.0
*
* @param mixed $value The value to sanitize.
* @return mixed Null if an input isn't valid, otherwise the sanitized value.
*/
public function sanitize( $value ) {
$value = wp_unslash( $value );
/**
* Filter a Customize setting value in un-slashed form.
*
* @since 3.4.0
*
* @param mixed $value Value of the setting.
* @param WP_Customize_Setting $this WP_Customize_Setting instance.
*/
return apply_filters( "customize_sanitize_{$this->id}", $value, $this );
}
/**
* Save the value of the setting, using the related API.
*
* @since 3.4.0
*
* @param mixed $value The value to update.
* @return mixed The result of saving the value.
*/
protected function update( $value ) {
switch( $this->type ) {
case 'theme_mod' :
return $this->_update_theme_mod( $value );
case 'option' :
return $this->_update_option( $value );
default :
/**
* Fires when the {@see WP_Customize_Setting::update()} method is called for settings
* not handled as theme_mods or options.
*
* The dynamic portion of the hook name, `$this->type`, refers to the type of setting.
*
* @since 3.4.0
*
* @param mixed $value Value of the setting.
* @param WP_Customize_Setting $this WP_Customize_Setting instance.
*/
return do_action( 'customize_update_' . $this->type, $value, $this );
}
}
/**
* Update the theme mod from the value of the parameter.
*
* @since 3.4.0
*
* @param mixed $value The value to update.
* @return mixed The result of saving the value.
*/
protected function _update_theme_mod( $value ) {
// Handle non-array theme mod.
if ( empty( $this->id_data[ 'keys' ] ) )
return set_theme_mod( $this->id_data[ 'base' ], $value );
// Handle array-based theme mod.
$mods = get_theme_mod( $this->id_data[ 'base' ] );
$mods = $this->multidimensional_replace( $mods, $this->id_data[ 'keys' ], $value );
if ( isset( $mods ) )
return set_theme_mod( $this->id_data[ 'base' ], $mods );
}
/**
* Update the option from the value of the setting.
*
* @since 3.4.0
*
* @param mixed $value The value to update.
* @return bool|null The result of saving the value.
*/
protected function _update_option( $value ) {
// Handle non-array option.
if ( empty( $this->id_data[ 'keys' ] ) )
return update_option( $this->id_data[ 'base' ], $value );
// Handle array-based options.
$options = get_option( $this->id_data[ 'base' ] );
$options = $this->multidimensional_replace( $options, $this->id_data[ 'keys' ], $value );
if ( isset( $options ) )
return update_option( $this->id_data[ 'base' ], $options );
}
/**
* Fetch the value of the setting.
*
* @since 3.4.0
*
* @return mixed The value.
*/
public function value() {
// Get the callback that corresponds to the setting type.
switch( $this->type ) {
case 'theme_mod' :
$function = 'get_theme_mod';
break;
case 'option' :
$function = 'get_option';
break;
default :
/**
* Filter a Customize setting value not handled as a theme_mod or option.
*
* The dynamic portion of the hook name, `$this->id_date['base']`, refers to
* the base slug of the setting name.
*
* For settings handled as theme_mods or options, see those corresponding
* functions for available hooks.
*
* @since 3.4.0
*
* @param mixed $default The setting default value. Default empty.
*/
return apply_filters( 'customize_value_' . $this->id_data[ 'base' ], $this->default );
}
// Handle non-array value
if ( empty( $this->id_data[ 'keys' ] ) )
return $function( $this->id_data[ 'base' ], $this->default );
// Handle array-based value
$values = $function( $this->id_data[ 'base' ] );
return $this->multidimensional_get( $values, $this->id_data[ 'keys' ], $this->default );
}
/**
* Sanitize the setting's value for use in JavaScript.
*
* @since 3.4.0
*
* @return mixed The requested escaped value.
*/
public function js_value() {
/**
* Filter a Customize setting value for use in JavaScript.
*
* The dynamic portion of the hook name, `$this->id`, refers to the setting ID.
*
* @since 3.4.0
*
* @param mixed $value The setting value.
* @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance.
*/
$value = apply_filters( "customize_sanitize_js_{$this->id}", $this->value(), $this );
if ( is_string( $value ) )
return html_entity_decode( $value, ENT_QUOTES, 'UTF-8');
return $value;
}
/**
* Validate user capabilities whether the theme supports the setting.
*
* @since 3.4.0
*
* @return bool False if theme doesn't support the setting or user can't change setting, otherwise true.
*/
final public function check_capabilities() {
if ( $this->capability && ! call_user_func_array( 'current_user_can', (array) $this->capability ) )
return false;
if ( $this->theme_supports && ! call_user_func_array( 'current_theme_supports', (array) $this->theme_supports ) )
return false;
return true;
}
/**
* Multidimensional helper function.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param bool $create Default is false.
* @return null|array Keys are 'root', 'node', and 'key'.
*/
final protected function multidimensional( &$root, $keys, $create = false ) {
if ( $create && empty( $root ) )
$root = array();
if ( ! isset( $root ) || empty( $keys ) )
return;
$last = array_pop( $keys );
$node = &$root;
foreach ( $keys as $key ) {
if ( $create && ! isset( $node[ $key ] ) )
$node[ $key ] = array();
if ( ! is_array( $node ) || ! isset( $node[ $key ] ) )
return;
$node = &$node[ $key ];
}
if ( $create ) {
if ( ! is_array( $node ) ) {
// account for an array overriding a string or object value
$node = array();
}
if ( ! isset( $node[ $last ] ) ) {
$node[ $last ] = array();
}
}
if ( ! isset( $node[ $last ] ) )
return;
return array(
'root' => &$root,
'node' => &$node,
'key' => $last,
);
}
/**
* Will attempt to replace a specific value in a multidimensional array.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param mixed $value The value to update.
* @return
*/
final protected function multidimensional_replace( $root, $keys, $value ) {
if ( ! isset( $value ) )
return $root;
elseif ( empty( $keys ) ) // If there are no keys, we're replacing the root.
return $value;
$result = $this->multidimensional( $root, $keys, true );
if ( isset( $result ) )
$result['node'][ $result['key'] ] = $value;
return $root;
}
/**
* Will attempt to fetch a specific value from a multidimensional array.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param mixed $default A default value which is used as a fallback. Default is null.
* @return mixed The requested value or the default value.
*/
final protected function multidimensional_get( $root, $keys, $default = null ) {
if ( empty( $keys ) ) // If there are no keys, test the root.
return isset( $root ) ? $root : $default;
$result = $this->multidimensional( $root, $keys );
return isset( $result ) ? $result['node'][ $result['key'] ] : $default;
}
/**
* Will attempt to check if a specific value in a multidimensional array is set.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @return bool True if value is set, false if not.
*/
final protected function multidimensional_isset( $root, $keys ) {
$result = $this->multidimensional_get( $root, $keys );
return isset( $result );
}
}
/**
* A setting that is used to filter a value, but will not save the results.
*
* Results should be properly handled using another setting or callback.
*
* @since 3.4.0
*
* @see WP_Customize_Setting
*/
class WP_Customize_Filter_Setting extends WP_Customize_Setting {
/**
* @since 3.4.0
*/
public function update( $value ) {}
}
/**
* A setting that is used to filter a value, but will not save the results.
*
* Results should be properly handled using another setting or callback.
*
* @since 3.4.0
*
* @see WP_Customize_Setting
*/
final class WP_Customize_Header_Image_Setting extends WP_Customize_Setting {
public $id = 'header_image_data';
/**
* @since 3.4.0
*
* @param $value
*/
public function update( $value ) {
global $custom_image_header;
// If the value doesn't exist (removed or random),
// use the header_image value.
if ( ! $value )
$value = $this->manager->get_setting('header_image')->post_value();
if ( is_array( $value ) && isset( $value['choice'] ) )
$custom_image_header->set_header_image( $value['choice'] );
else
$custom_image_header->set_header_image( $value );
}
}
/**
* Customizer Background Image Setting class.
*
* @since 3.4.0
*
* @see WP_Customize_Setting
*/
final class WP_Customize_Background_Image_Setting extends WP_Customize_Setting {
public $id = 'background_image_thumb';
/**
* @since 3.4.0
*
* @param $value
*/
public function update( $value ) {
remove_theme_mod( 'background_image_thumb' );
}
}
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