class-gf-section-tabs-addon.php

<?php 

class GFSectionTabsAddon extends GFAddOn {

	// addon version
	protected $_version = "1.0";

	// minimum Gravity Forms version
	protected $_min_gravityforms_version = "1.7.9999";

	// addon slug
	protected $_slug = "gravityforms-section-tabs";

	// addon relative path
	protected $_path = "gravityforms-section-tabs/gravityforms-section-tabs.php";

	// addon absolute path
	protected $_full_path = __FILE__;

	// addon URL
	protected $_url = "https://github.com/tyxla/gravity-forms-section-tabs";

	// addon name
	protected $_title = "Gravity Forms: Section Tabs";

	// addon short name
	protected $_short_title = "Section Tabs";

	// our constructor - hooks addon-specific functionality
	public function __construct() {
		parent::__construct();

		// add our CSS class to forms with section tabs enabled
		add_filter('gform_pre_render', array($this, 'gform_pre_render'), 10, 3);
	}

	// register the fields within the form settings
	public function form_settings_fields($form) {
		return array(
			array(
				"title"  => "Section Tabs",
				"fields" => array(
					// whether to enable the Section Tabs for the particular form
					array(
						"label"   => "Enable Section Tabs",
						"type"    => "checkbox",
						"name"    => "enable_section_tabs",
						"tooltip" => "If enabled, will turn each section into a tab, containing all fields below it until the next section.",
						"choices" => array(
							array(
								"label" => "Enabled",
								"name"  => "enable_section_tabs"
							)
						)
					)
				)
			)
		);
	}

	// enqueue styles
	public function styles() {
		return array_merge(parent::styles(), array(
			// main frontend CSS file
			array(
				'handle'  => 'gravity_forms_section_tabs_main',
				'src'     => $this->get_base_url() . '/css/main.css',
				'version' => $this->_version,
				'enqueue' => array(
					array('field_types' => array('section'))
				)
			)
		));
	}

	// enqueue scripts
	public function scripts() {
		return array_merge(parent::scripts(), array(
			// main frontend JS file
			array(
				'handle'  => 'gravity_forms_section_tabs_main',
				'src'     => $this->get_base_url() . '/js/main.js',
				'version' => $this->_version,
				'deps' => array('jquery'),
				'in_footer' => true,
				'enqueue' => array(
					array('field_types' => array('section'))
				)
			)
		));
	}

	// add a specific CSS class to forms with section tabs enabled
	public function gform_pre_render($form, $ajax, $field_values = array()) {
		if (!empty($form['gravityforms-section-tabs']['enable_section_tabs'])) {
			$classname = 'gravity_forms_section_tabs_enabled';
			if (empty($form['cssClass'])) {
				$form['cssClass'] = $classname;
			} else {
				$form['cssClass'] .= ' ' . $classname;
			}
		}

		return $form;
	}
}