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class-custom-javascript-control.php
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<?php
namespace Soderlind\Customizer;
/**
* From customize/class-wp-customize-custom-css-setting.php, adjusted for javascript
*/
/**
* Custom Setting to handle Soderlind Custom JavaScript.
*
* @since 4.7.0
*
* @see WP_Customize_Setting
*/
final class Soderlind_Customize_Custom_JavaScript_Setting extends \WP_Customize_Setting {
/**
* The setting type.
*
* @since 4.7.0
* @var string
*/
public $type = 'custom_javascript';
/**
* Setting Transport
*
* @since 4.7.0
* @var string
*/
public $transport = 'postMessage';
/**
* Capability required to edit this setting.
*
* @since 4.7.0
* @var string
*/
public $capability = 'unfiltered_html';
/**
* Stylesheet
*
* @since 4.7.0
* @var string
*/
public $stylesheet = '';
/**
* Soderlind_Customize_Custom_JavaScript_Setting constructor.
*
* @since 4.7.0
*
* @throws \Exception If the setting ID does not match the pattern `custom_javascript[$stylesheet]`.
*
* @param \WP_Customize_Manager $manager The Customize Manager class.
* @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 = [] ) {
parent::__construct( $manager, $id, $args );
if ( 'custom_javascript' !== $this->id_data[ 'base' ] ) {
throw new \Exception( 'Setting ID must have custom_javascript as its base.' );
}
if ( 1 !== count( $this->id_data[ 'keys' ] ) || empty( $this->id_data[ 'keys' ][ 0 ] ) ) {
throw new \Exception( 'Setting ID must contain a single stylesheet key.' );
}
$this->stylesheet = $this->id_data[ 'keys' ][ 0 ];
}
/**
* Add filter to preview post value.
*
* @since 4.7.9
*
* @return bool False when preview short-circuits due no change needing to be previewed.
*/
public function preview() {
if ( $this->is_previewed ) {
return false;
}
$this->is_previewed = true;
add_filter( 'soderlind_get_custom_javascript', [ $this, 'filter_previewed_wp_get_custom_javascript' ], 9, 2 );
return true;
}
/**
* Filter `soderlind_get_custom_javascript` for applying the customized value.
*
* This is used in the preview when `soderlind_get_custom_javascript()` is called for rendering the styles.
*
* @since 4.7.0
* @see soderlind_get_custom_javascript()
*
* @param string $javascript Original JavaScript.
* @param string $stylesheet Current stylesheet.
* @return string JavaScript.
*/
public function filter_previewed_wp_get_custom_javascript( $javascript, $stylesheet ) {
if ( $stylesheet === $this->stylesheet ) {
$customized_value = $this->post_value( null );
if ( ! is_null( $customized_value ) ) {
$javascript = $customized_value;
}
}
return $javascript;
}
/**
* Fetch the value of the setting. Will return the previewed value when `preview()` is called.
*
* @since 4.7.0
* @see WP_Customize_Setting::value()
*
* @return string
*/
public function value() {
if ( $this->is_previewed ) {
$post_value = $this->post_value( null );
if ( null !== $post_value ) {
return $post_value;
}
}
$id_base = $this->id_data[ 'base' ];
$value = '';
$post = soderlind_get_custom_javascript_post( $this->stylesheet );
if ( $post ) {
$value = $post->post_content;
}
if ( empty( $value ) ) {
$value = $this->default;
}
/** This filter is documented in wp-includes/class-wp-customize-setting.php */
$value = apply_filters( "customize_value_{$id_base}", $value, $this );
return $value;
}
/**
* Validate JavaScript.
*
* Checks for imbalanced braces, brackets, and comments.
* Notifications are rendered when the customizer state is saved.
*
* @since 4.7.0
* @since 4.9.0 Checking for balanced characters has been moved client-side via linting in code editor.
*
* @param string $javascript The input string.
* @return true|WP_Error True if the input was validated, otherwise WP_Error.
*/
public function validate( $javascript ) {
$validity = new \WP_Error();
// if ( preg_match( '#</?\w+#', $javascript ) ) {
// $validity->add( 'illegal_markup', __( 'Markup is not allowed in JavaScript.' ) );
// }
if ( empty( $validity->errors ) ) {
$validity = parent::validate( $javascript );
}
return $validity;
// return true;
}
/**
* Store the JavaScript setting value in the custom_javascript custom post type for the stylesheet.
*
* @since 4.7.0
*
* @param string $javascript The input value.
* @return int|false The post ID or false if the value could not be saved.
*/
public function update( $javascript ) {
if ( empty( $javascript ) ) {
$javascript = '';
}
$r = soderlind_update_custom_javascript_post(
$javascript,
[
'stylesheet' => $this->stylesheet,
]
);
if ( $r instanceof WP_Error ) {
return false;
}
$post_id = $r->ID;
// Cache post ID in theme mod for performance to avoid additional DB query.
if ( $this->manager->get_stylesheet() === $this->stylesheet ) {
set_theme_mod( 'custom_javascript_post_id', $post_id );
}
return $post_id;
}
}