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<?php

final class WP_Customize_Custom_CSS_Setting extends WP_Customize_Setting
{
    public $type = 'custom_css';
    public $transport = 'postMessage';
    public $capability = 'edit_css';
    public $stylesheet = '';
    public function __construct($manager, $id, $args = array())
    {
        parent::__construct($manager, $id, $args);
        if ('custom_css' !== $this->id_data['base']) {
            throw new Exception('Expected custom_css id_base.');
        }
        if (1 !== count($this->id_data['keys']) || empty($this->id_data['keys'][0])) {
            throw new Exception('Expected single stylesheet key.');
        }
        $this->stylesheet = $this->id_data['keys'][0];
    }
    public function preview()
    {
        if ($this->is_previewed) {
            return false;
        }
        $this->is_previewed = true;
        add_filter('wp_get_custom_css', array($this, 'filter_previewed_wp_get_custom_css'), 9, 2);
        return true;
    }
    public function filter_previewed_wp_get_custom_css($css, $stylesheet)
    {
        if ($stylesheet === $this->stylesheet) {
            $customized_value = $this->post_value(null);
            if (!is_null($customized_value)) {
                $css = $customized_value;
            }
        }
        return $css;
    }
    public function value()
    {
        if ($this->is_previewed) {
            $post_value = $this->post_value(null);
            if (null !== $post_value) {
                return $post_value;
            }
        }
        $id_base = $this->id_data['base'];
        $value = '';
        $post = wp_get_custom_css_post($this->stylesheet);
        if ($post) {
            $value = $post->post_content;
        }
        if (empty($value)) {
            $value = $this->default;
        }
        $value = apply_filters("customize_value_{$id_base}", $value, $this);
        return $value;
    }
    public function validate($css)
    {
        $validity = new WP_Error();
        if (preg_match('#</?\\w+#', $css)) {
            $validity->add('illegal_markup', __('Markup is not allowed in CSS.'));
        }
        if (!$validity->has_errors()) {
            $validity = parent::validate($css);
        }
        return $validity;
    }
    public function update($css)
    {
        if (empty($css)) {
            $css = '';
        }
        $r = wp_update_custom_css_post($css, array('stylesheet' => $this->stylesheet));
        if ($r instanceof WP_Error) {
            return false;
        }
        $post_id = $r->ID;
        if ($this->manager->get_stylesheet() === $this->stylesheet) {
            set_theme_mod('custom_css_post_id', $post_id);
        }
        return $post_id;
    }
}