File: /home/sps/public_html/wp-content/plugins/nextgen-gallery/src/DynamicStylesheets/Manager.php
<?php
namespace Imagely\NGG\DynamicStylesheets;
use Imagely\NGG\Display\View;
use Imagely\NGG\Display\StaticAssets;
use Imagely\NGG\Settings\Settings;
/**
* Manager for dynamic stylesheets.
*/
class Manager {
/**
* Instances of the manager.
*
* @var array
*/
protected static $_instances = [];
/**
* Registered templates.
*
* @var array<string>
*/
protected $templates = [];
/**
* Get an instance of the manager.
*
* @param string|bool $context The context for the instance.
* @return Manager The manager instance.
*/
public static function get_instance( $context = false ) {
if ( ! isset( self::$_instances[ $context ] ) ) {
self::$_instances[ $context ] = new Manager();
}
return self::$_instances[ $context ];
}
/**
* Registers a template with the dynamic stylesheet utility. A template must be registered before it can be loaded.
*
* @param string $name The template name.
* @param string $template The template path.
*/
public function register( $name, $template ) {
$this->templates[ $name ] = $template;
}
/**
* Get the CSS template by name.
*
* @param string $name The template name.
* @return string|false The template path or false if not found.
*/
public function get_css_template( $name ) {
return $this->templates[ $name ];
}
/**
* Loads a template, along with the dynamic variables to be interpolated.
*
* @param string $name The template name.
* @param array $data The data to pass to the template (optional).
*/
public function enqueue( $name, $data = [] ) {
$template_name = $this->get_css_template( $name );
if ( false !== $template_name ) {
if ( is_subclass_of( $data, 'C_DataMapper_Model' ) ) {
$data = $data->get_entity();
}
if ( defined( 'NGG_INLINE_DYNAMIC_CSS' ) && NGG_INLINE_DYNAMIC_CSS ) {
$view = new View( $template_name, $data );
$css = $view->render( true );
\wp_enqueue_style(
'ngg_dyncss',
StaticAssets::get_url( 'Display/DynamicStylesheets.css' ),
[],
NGG_SCRIPT_VERSION
);
wp_add_inline_style( 'ngg_dyncss', $css );
} else {
// Prevent albums with many children from creating GET URL that exceed the RFC limits.
if ( isset( $data->original_album_entities ) ) {
unset( $data->original_album_entities );
}
$slug = Settings::get_instance()->get( 'dynamic_stylesheet_slug' );
$encoded_data = $this->encode( $data );
\wp_enqueue_style(
'dyncss-' . $template_name . $encoded_data . '@dynamic',
"/{$slug}?name={$name}&data={$encoded_data}",
[],
NGG_SCRIPT_VERSION
);
}
}
}
/**
* Encodes $data
*
* Base64 encoding uses '==' to denote the end of the sequence, but keep it out of the url
*
* @param mixed $data The data to encode.
* @return string The encoded data.
*/
public function encode( $data ) {
$data = wp_json_encode( $data );
$data = base64_encode( $data );
$data = str_replace( '/', '\\', $data );
$data = rtrim( $data, '=' );
return $data;
}
/**
* Decodes $data
*
* @param mixed $data The data to decode.
* @return array|mixed The decoded data.
*/
public function decode( $data ) {
$data = str_replace( '\\', '/', $data );
$data = base64_decode( $data . '==' );
$data = json_decode( $data );
return $data;
}
}