felixarntz/wp-site-identity

<?php
/**
 * WP_Site_Identity_Settings_Form class
 *
 * @package WPSiteIdentity
 * @since 1.0.0
 */

/**
 * Class representing a settings form.
 *
 * @since 1.0.0
 */
class WP_Site_Identity_Settings_Form {

    /**
     * Slug of the settings form.
     *
     * @since 1.0.0
     * @var string
     */
    protected $slug = '';

    /**
     * Setting registry the settings form should display fields for.
     *
     * @since 1.0.0
     * @var WP_Site_Identity_Setting_Registry
     */
    protected $setting_registry;

    /**
     * Parent registry for the settings form.
     *
     * @since 1.0.0
     * @var WP_Site_Identity_Settings_Form_Registry
     */
    protected $registry;

    /**
     * Child settings section registry.
     *
     * @since 1.0.0
     * @var WP_Site_Identity_Settings_Section_Registry
     */
    protected $section_registry;

    /**
     * Child settings field registry.
     *
     * @since 1.0.0
     * @var WP_Site_Identity_Settings_Field_Registry
     */
    protected $field_registry;

    /**
     * Constructor.
     *
     * Sets the settings form properties.
     *
     * @since 1.0.0
     *
     * @param WP_Site_Identity_Setting_Registry       $setting_registry Setting registry the settings form should display fields for.
     * @param WP_Site_Identity_Settings_Form_Registry $registry         Optional. Parent registry for the settings form.
     */
    public function __construct( WP_Site_Identity_Setting_Registry $setting_registry, WP_Site_Identity_Settings_Form_Registry $registry = null ) {
        $this->slug             = $setting_registry->group();
        $this->setting_registry = $setting_registry;

        if ( $registry ) {
            $this->registry = $registry;
        } else {
            $this->registry = new WP_Site_Identity_Standard_Settings_Form_Registry();
        }

        $this->section_registry = new WP_Site_Identity_Standard_Settings_Section_Registry( $this );
        $this->field_registry   = new WP_Site_Identity_Standard_Settings_Field_Registry( $this );
    }

    /**
     * Checks whether the settings form is registered.
     *
     * @since 1.0.0
     *
     * @return bool True if the settings form is registered, false otherwise.
     */
    public function is_registered() {
        return $this->registry->has_form( $this->name );
    }

    /**
     * Registers the settings form.
     *
     * @since 1.0.0
     */
    public function register() {
        $this->registry->register_form( $this );
    }

    /**
     * Unregisters the settings form.
     *
     * @since 1.0.0
     */
    public function unregister() {
        $this->registry->unregister_form( $this );
    }

    /**
     * Renders the form.
     *
     * @since 1.0.0
     */
    public function render() {
        $group = $this->setting_registry->prefix( $this->setting_registry->group() );

        ?>
        <form method="post" action="options.php" novalidate="novalidate">
            <?php settings_fields( $group ); ?>

            <?php do_settings_sections( $group ); ?>

            <table class="form-table">
                <?php do_settings_fields( $group, 'default' ); ?>
            </table>

            <?php submit_button(); ?>
        </form>
        <?php
    }

    /**
     * Gets the slug of the settings form.
     *
     * @since 1.0.0
     *
     * @return string Admin page slug.
     */
    public function get_slug() {
        return $this->slug;
    }

    /**
     * Gets the setting registry the settings form should display fields for.
     *
     * @since 1.0.0
     *
     * @return WP_Site_Identity_Setting_Registry The form's setting registry.
     */
    public function get_setting_registry() {
        return $this->setting_registry;
    }

    /**
     * Gets the child settings section registry.
     *
     * @since 1.0.0
     *
     * @return WP_Site_Identity_Settings_Section_Registry The form's child settings section registry.
     */
    public function get_section_registry() {
        return $this->section_registry;
    }

    /**
     * Gets the child settings field registry.
     *
     * @since 1.0.0
     *
     * @return WP_Site_Identity_Settings_Field_Registry The form's child settings field registry.
     */
    public function get_field_registry() {
        return $this->field_registry;
    }

    /**
     * Sets default fields for all settings in the setting registry.
     *
     * @since 1.0.0
     */
    public function set_defaults() {
        $factory = $this->field_registry->factory();

        foreach ( $this->setting_registry->get_all_settings() as $setting ) {
            $factory->create_field( $setting )->register();
        }
    }
}