gravityforms.php

<?php
/*
Plugin Name: Gravity Forms
Plugin URI: https://www.gravityforms.com
Description: Easily create web forms and manage form entries within the WordPress admin.
Version: 2.4.11
Author: rocketgenius
Author URI: https://www.rocketgenius.com
License: GPL-2.0+
Text Domain: gravityforms
Domain Path: /languages

------------------------------------------------------------------------
Copyright 2009-2019 Rocketgenius, Inc.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see http://www.gnu.org/licenses.
*/

//------------------------------------------------------------------------------------------------------------------
//---------- Gravity Forms License Key -----------------------------------------------------------------------------
//------------------------------------------------------------------------------------------------------------------
// If you hardcode a Gravity Forms License Key here, it will automatically populate on activation.
$gf_license_key = '';

//-- OR ---//

// You can also add the Gravity Forms license key to your wp-config.php file to automatically populate on activation
// Add the code in the comment below to your wp-config.php to do so:
// define('GF_LICENSE_KEY','YOUR_KEY_GOES_HERE');
//------------------------------------------------------------------------------------------------------------------

//------------------------------------------------------------------------------------------------------------------
//---------- reCAPTCHA Keys -----------------------------------------------------------------------------
//------------------------------------------------------------------------------------------------------------------
// If you hardcode your reCAPTCHA Keys here, it will automatically populate on activation.
$gf_recaptcha_private_key = '';
$gf_recaptcha_public_key  = '';

//-- OR ---//

// You can  also add the reCAPTCHA keys to your wp-config.php file to automatically populate on activation
// Add the two lines of code in the comment below to your wp-config.php to do so:
// define('GF_RECAPTCHA_SITE_KEY','YOUR_SITE_KEY_GOES_HERE');
// define('GF_RECAPTCHA_SECRET_KEY','YOUR_SECRET_KEY_GOES_HERE');
//------------------------------------------------------------------------------------------------------------------

if ( ! defined( 'ABSPATH' ) ) {
	die();
}

if ( ! defined( 'RG_CURRENT_PAGE' ) ) {
	/**
	 * Defines the current page.
	 *
	 * @since   Unknown
	 *
	 * @used-by GFForms::init()
	 * @used-by GFCommon::ensure_wp_version()
	 *
	 * @var string RG_CURRENT_PAGE The current page.
	 */
	define( 'RG_CURRENT_PAGE', basename( $_SERVER['PHP_SELF'] ) );
}

if ( ! defined( 'IS_ADMIN' ) ) {
	/**
	 * Checks if an admin page is being viewed.
	 *
	 * @since   Unknown
	 *
	 * @used-by GFForms::init()
	 * @used-by GFFormsModel::get_default_value()
	 * @used-by GFFormsModel::get_label()
	 *
	 * @var boolean IS_ADMIN True if admin page. False otherwise.
	 */
	define( 'IS_ADMIN', is_admin() );
}

/**
 * Defines the current view within Gravity Forms.
 *
 * Defined from URL parameters.
 *
 * @since      Unknown
 * @deprecated 2.1.3.6
 *
 * @uses GFForms::get()
 *
 * @var string|boolean RG_CURRENT_VIEW The view if available.  False otherwise.
 */
define( 'RG_CURRENT_VIEW', GFForms::get( 'view' ) );

/**
 * Defines the minimum version of WordPress required for Gravity Forms.
 *
 * @since   Unknown
 *
 * @used-by GFCommon::ensure_wp_version()
 * @used-by GF_SUPPORTED_WP_VERSION
 * @used-by GFSettings::gravityforms_settings_page()
 *
 * @var string GF_MIN_WP_VERSION Minimum version number.
 */
define( 'GF_MIN_WP_VERSION', '3.7' );

/**
 * Checks if the current WordPress version is supported.
 *
 * @since   Unknown
 *
 * @used-by GFForms::init()
 * @used-by GFCommon::ensure_wp_version()
 * @uses    GF_MIN_WP_VERSION
 *
 * @var boolean GF_SUPPORTED_VERSION True if supported.  False otherwise.
 */
define( 'GF_SUPPORTED_WP_VERSION', version_compare( get_bloginfo( 'version' ), GF_MIN_WP_VERSION, '>=' ) );

/**
 * Defines the minimum version of WordPress that will be officially supported.
 *
 * @var string GF_MIN_WP_VERSION_SUPPORT_TERMS The version number
 */
define( 'GF_MIN_WP_VERSION_SUPPORT_TERMS', '5.1' );


if ( ! defined( 'GRAVITY_MANAGER_URL' ) ) {
	/**
	 * Defines the Gravity Manager URL.
	 *
	 * @var string GRAVITY_MANAGER_URL The full URL to the Gravity Manager.
	 */
	define( 'GRAVITY_MANAGER_URL', 'https://www.gravityhelp.com/wp-content/plugins/gravitymanager' );
}

if ( ! defined( 'GRAVITY_MANAGER_PROXY_URL' ) ) {
	/**
	 * Defines the Gravity Manager proxy URL.
	 *
	 * @var string GRAVITY_MANAGER_PROXY_URL The full URL to the Gravity Manager proxy.
	 */
	define( 'GRAVITY_MANAGER_PROXY_URL', 'http://proxy.gravityplugins.com' );
}

require_once( plugin_dir_path( __FILE__ ) . 'currency.php' );
require_once( plugin_dir_path( __FILE__ ) . 'common.php' );
require_once( plugin_dir_path( __FILE__ ) . 'forms_model.php' );
require_once( plugin_dir_path( __FILE__ ) . 'widget.php' );
require_once( plugin_dir_path( __FILE__ ) . 'includes/api.php' );
require_once( plugin_dir_path( __FILE__ ) . 'includes/webapi/webapi.php' );
require_once( plugin_dir_path( __FILE__ ) . 'includes/fields/class-gf-fields.php' );
require_once( plugin_dir_path( __FILE__ ) . 'includes/class-gf-download.php' );
require_once( plugin_dir_path( __FILE__ ) . 'includes/query/class-gf-query.php' );

// Load Logging if Logging Add-On is not active.
if ( ! GFCommon::is_logging_plugin_active() ) {
	require_once( plugin_dir_path( __FILE__ ) . 'includes/logging/logging.php' );
}

// GFCommon::$version is deprecated, set it to current version for backwards compatibility
GFCommon::$version = GFForms::$version;

add_action( 'init', array( 'GFForms', 'init' ) );
add_action( 'wp', array( 'GFForms', 'maybe_process_form' ), 9 );
add_action( 'admin_init', array( 'GFForms', 'maybe_process_form' ), 9 );
add_action( 'wp', array( 'GFForms', 'process_exterior_pages' ) );
add_filter( 'upgrader_pre_install', array( 'GFForms', 'validate_upgrade' ), 10, 2 );
add_filter( 'tiny_mce_before_init', array( 'GFForms', 'modify_tiny_mce_4' ), 20 );
add_filter( 'user_has_cap', array( 'RGForms', 'user_has_cap' ), 10, 3 );
add_filter( 'query', array( 'GFForms', 'filter_query' ) );


//Hooks for no-conflict functionality
if ( is_admin() && ( GFForms::is_gravity_page() || GFForms::is_gravity_ajax_action() ) ) {
	add_action( 'wp_print_scripts', array( 'GFForms', 'no_conflict_mode_script' ), 1000 );
	add_action( 'admin_print_footer_scripts', array( 'GFForms', 'no_conflict_mode_script' ), 9 );

	add_action( 'wp_print_styles', array( 'GFForms', 'no_conflict_mode_style' ), 1000 );
	add_action( 'admin_print_styles', array( 'GFForms', 'no_conflict_mode_style' ), 1 );
	add_action( 'admin_print_footer_scripts', array( 'GFForms', 'no_conflict_mode_style' ), 1 );
	add_action( 'admin_footer', array( 'GFForms', 'no_conflict_mode_style' ), 1 );
}

add_action( 'plugins_loaded', array( 'GFForms', 'loaded' ) );

register_activation_hook( __FILE__, array( 'GFForms', 'activation_hook' ) );
register_deactivation_hook( __FILE__, array( 'GFForms', 'deactivation_hook' ) );

gf_upgrade();

/**
 * Class GFForms
 *
 * Handles the loading of Gravity Forms and other core functionality
 */
class GFForms {

	/**
	 * Defines this version of Gravity Forms.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @var string $version The version number.
	 */
	public static $version = '2.4.11';

	/**
	 * Handles background upgrade tasks.
	 *
	 * @var GF_Background_Upgrader
	 */
	public static $background_upgrader = null;

	/**
	 * Runs after Gravity Forms is loaded.
	 *
	 * Initializes add-ons.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFAddOn::init_addons()
	 *
	 * @return void
	 */
	public static function loaded() {

		/**
		 * Fires when Gravity Forms has loaded.
		 *
		 * When developing Add-Ons, use this hook to initialize any functionality that depends on Gravity Forms functionality.
		 */
		do_action( 'gform_loaded' );

		//initializing Add-Ons if necessary
		if ( class_exists( 'GFAddOn' ) ) {
			GFAddOn::init_addons();
		}
	}

	/**
	 * Determines if the 3rd party Members plugin is active.
	 *
	 * @since  Unknown
	 *
	 * @param string $version Minimum version number of Members plugin to check for.
	 *
	 * @return boolean True if the Members plugin is active. False otherwise.
	 */
	public static function has_members_plugin( $min_version = '1.0' ) {

		if ( version_compare( $min_version, '2.0', '>=' ) ) {
			return function_exists( 'members_register_cap_group' );
		} else if ( version_compare( $min_version, '1.0', '>=' ) ) {
			return ! function_exists( 'members_register_cap_group' ) && function_exists( 'members_get_capabilities' );
		}

		return false;

	}

	/**
	 * Initializes Gravity Forms.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return void
	 */
	public static function init() {

		if ( ! wp_next_scheduled( 'gravityforms_cron' ) ) {
			wp_schedule_event( time(), 'daily', 'gravityforms_cron' );
		}

		add_action( 'gravityforms_cron', array( 'GFForms', 'cron' ) );

		GF_Download::maybe_process();

		//load text domains
		GFCommon::load_gf_text_domain( 'gravityforms' );

		add_filter( 'gform_logging_supported', array( 'GFForms', 'set_logging_supported' ) );
		add_action( 'admin_head', array( 'GFCommon', 'maybe_output_gf_vars' ) );
		add_action( 'admin_head', array( 'GFForms', 'load_admin_bar_styles' ) );
		add_action( 'wp_head', array( 'GFForms', 'load_admin_bar_styles' ) );

		self::register_scripts();

		self::init_background_upgrader();

		// Run background feed processing.
		require_once( plugin_dir_path( __FILE__ ) . 'includes/addon/class-gf-feed-processor.php' );

		gf_feed_processor();

		// Maybe set up Gravity Forms
		if ( ( false === ( defined( 'DOING_AJAX' ) && true === DOING_AJAX ) ) ) {

			gf_upgrade()->maybe_upgrade();

		}

		// Load Editor Blocks if WordPress is 5.0+.
		if ( function_exists( 'register_block_type' ) ) {

			// Load block framework.
			if ( ! class_exists( 'GF_Blocks' ) ) {
				require_once plugin_dir_path( __FILE__ ) . 'includes/blocks/class-gf-blocks.php';
			}

			// Load included Blocks.
			foreach ( glob( plugin_dir_path( __FILE__ ) . 'includes/blocks/class-gf-block-*.php' ) as $filename ) {
				require_once $filename;
			}

		}

		// Plugin update actions
		add_filter( 'transient_update_plugins', array( 'GFForms', 'check_update' ) );
		add_filter( 'site_transient_update_plugins', array( 'GFForms', 'check_update' ) );
		add_filter( 'auto_update_plugin', array( 'GFForms', 'maybe_auto_update' ), 10, 2 );

		if ( IS_ADMIN ) {

			global $current_user;

			//Members plugin integration. Adding Gravity Forms roles to the checkbox list
			if ( self::has_members_plugin( '2.0' ) ) {
				add_action( 'members_register_cap_groups', array( 'GFForms', 'members_register_cap_group' ) );
				add_action( 'members_register_caps', array( 'GFForms', 'members_register_caps' ) );
			} else if ( self::has_members_plugin( '1.0' ) ) {
				add_filter( 'members_get_capabilities', array( 'GFForms', 'members_get_capabilities' ) );
			}

            // User Role Editor integration.
            add_filter( 'ure_capabilities_groups_tree', array( 'GFForms', 'filter_ure_capabilities_groups_tree' ) );
            add_filter( 'ure_custom_capability_groups', array( 'GFForms', 'filter_ure_custom_capability_groups' ), 10, 2 );

			if ( is_multisite() ) {
				add_filter( 'wpmu_drop_tables', array( 'GFFormsModel', 'mu_drop_tables' ) );
			}

			add_action( 'admin_enqueue_scripts', array( 'GFForms', 'enqueue_admin_scripts' ) );
			add_action( 'print_media_templates', array( 'GFForms', 'action_print_media_templates' ) );

			if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
				add_action( 'admin_footer', array( 'GFForms', 'deprecate_add_on_methods' ) );
			}

			//Loading Gravity Forms if user has access to any functionality
			if ( GFCommon::current_user_can_any( GFCommon::all_caps() ) ) {
				require_once( GFCommon::get_base_path() . '/export.php' );
				GFExport::maybe_export();

				//Imports theme forms if configured to be automatic imported
				gf_upgrade()->maybe_import_theme_forms();

				//creates the "Forms" left menu
				add_action( 'admin_menu', array( 'GFForms', 'create_menu' ) );

				// Add site-wide admin notices
				add_action( 'admin_notices', array( 'GFForms', 'action_admin_notices' ) );

				if ( GF_SUPPORTED_WP_VERSION ) {

					add_action( 'admin_footer', array( 'GFForms', 'check_upload_folder' ) );
					add_action( 'wp_dashboard_setup', array( 'GFForms', 'dashboard_setup' ) );

					// Support modifying the admin page title for settings
					add_filter( 'admin_title', array( __class__, 'modify_admin_title' ), 10, 2 );

					// Display admin notice if logging is enabled.
					add_action( 'admin_notices', array( 'GFForms', 'maybe_display_logging_notice' ) );

					require_once( GFCommon::get_base_path() . '/includes/locking/locking.php' );

					if ( self::is_gravity_page() ) {
						require_once( GFCommon::get_base_path() . '/tooltips.php' );
					} elseif ( RG_CURRENT_PAGE == 'media-upload.php' ) {
						require_once( GFCommon::get_base_path() . '/entry_list.php' );
					} elseif ( in_array( RG_CURRENT_PAGE, array( 'admin.php', 'admin-ajax.php' ) ) ) {

						add_action( 'wp_ajax_rg_save_form', array( 'GFForms', 'save_form' ) );
						add_action( 'wp_ajax_rg_change_input_type', array( 'GFForms', 'change_input_type' ) );
						add_action( 'wp_ajax_rg_refresh_field_preview', array( 'GFForms', 'refresh_field_preview' ) );
						add_action( 'wp_ajax_rg_add_field', array( 'GFForms', 'add_field' ) );
						add_action( 'wp_ajax_rg_duplicate_field', array( 'GFForms', 'duplicate_field' ) );
						add_action( 'wp_ajax_rg_delete_field', array( 'GFForms', 'delete_field' ) );
						add_action( 'wp_ajax_rg_delete_file', array( 'GFForms', 'delete_file' ) );
						add_action( 'wp_ajax_rg_select_export_form', array( 'GFForms', 'select_export_form' ) );
						add_action( 'wp_ajax_rg_start_export', array( 'GFForms', 'start_export' ) );
						add_action( 'wp_ajax_gf_upgrade_license', array( 'GFForms', 'upgrade_license' ) );
						add_action( 'wp_ajax_gf_delete_custom_choice', array( 'GFForms', 'delete_custom_choice' ) );
						add_action( 'wp_ajax_gf_save_custom_choice', array( 'GFForms', 'save_custom_choice' ) );
						add_action( 'wp_ajax_gf_get_post_categories', array( 'GFForms', 'get_post_category_values' ) );
						add_action( 'wp_ajax_gf_get_address_rule_values_select', array(
							'GFForms',
							'get_address_rule_values_select'
						) );
						add_action( 'wp_ajax_gf_get_notification_post_categories', array(
							'GFForms',
							'get_notification_post_category_values'
						) );
						//add_action( 'wp_ajax_gf_save_confirmation', array( 'GFForms', 'save_confirmation' ) );
						add_action( 'wp_ajax_gf_delete_confirmation', array( 'GFForms', 'delete_confirmation' ) );
						add_action( 'wp_ajax_gf_save_new_form', array( 'GFForms', 'save_new_form' ) );
						add_action( 'wp_ajax_gf_save_title', array( 'GFForms', 'save_form_title' ) );

						//entry list ajax operations
						add_action( 'wp_ajax_rg_update_lead_property', array( 'GFForms', 'update_lead_property' ) );
						add_action( 'wp_ajax_delete-gf_entry', array( 'GFForms', 'update_lead_status' ) );

						//form list ajax operations
						add_action( 'wp_ajax_rg_update_form_active', array( 'GFForms', 'update_form_active' ) );

						//notification list ajax operations
						add_action( 'wp_ajax_rg_update_notification_active', array(
							'GFForms',
							'update_notification_active'
						) );

						//confirmation list ajax operations
						add_action( 'wp_ajax_rg_update_confirmation_active', array(
							'GFForms',
							'update_confirmation_active'
						) );

						//dynamic captcha image
						add_action( 'wp_ajax_rg_captcha_image', array( 'GFForms', 'captcha_image' ) );

						//dashboard message "dismiss upgrade" link
						add_action( 'wp_ajax_rg_dismiss_upgrade', array( 'GFForms', 'dashboard_dismiss_upgrade' ) );

						// entry detail: resend notifications
						add_action( 'wp_ajax_gf_resend_notifications', array( 'GFForms', 'resend_notifications' ) );

						// Shortcode UI
						add_action( 'wp_ajax_gf_do_shortcode', array( 'GFForms', 'handle_ajax_do_shortcode' ) );

						// Export
						add_filter( 'wp_ajax_gf_process_export', array( 'GFForms', 'ajax_process_export' ) );
						add_filter( 'wp_ajax_gf_download_export', array( 'GFForms', 'ajax_download_export' ) );

						// Dismiss message
						add_action( 'wp_ajax_gf_dismiss_message', array( 'GFForms', 'ajax_dismiss_message' ) );

						// Check background tasks for the system report
						add_action( 'wp_ajax_gf_check_background_tasks', array( 'GFForms', 'check_background_tasks' ) );

						// Check status of upgrade
						add_action( 'wp_ajax_gf_force_upgrade', array( 'GFForms', 'ajax_force_upgrade' ) );

						// Disable logging.
						add_action( 'wp_ajax_gf_disable_logging', array( 'GFForms', 'ajax_disable_logging' ) );

					}

					add_filter( 'plugins_api', array( 'GFForms', 'get_addon_info' ), 100, 3 );
					add_action( 'after_plugin_row', array( 'GFForms', 'plugin_row' ) );
					add_action( 'in_plugin_update_message-gravityforms/gravityforms.php', array( 'GFForms', 'in_plugin_update_message' ), 10, 2 );
					add_action( 'install_plugins_pre_plugin-information', array( 'GFForms', 'display_changelog' ), 9 );
					add_filter( 'plugin_action_links', array( 'GFForms', 'plugin_settings_link' ), 10, 2 );
				}
			}
			add_action( 'admin_init', array( 'GFForms', 'ajax_parse_request' ), 10 );

			$gf_page = self::get_page();
			if ( $gf_page == 'entry_list' && ! isset( $_GET['filter'] ) ) {
				require_once( GFCommon::get_base_path() . '/entry_list.php' );
				$default_filter = GFEntryList::get_default_filter();
				if ( $default_filter !== 'all' ) {
					$url = add_query_arg( array( 'filter' => $default_filter ) );
					$url = esc_url_raw( $url );
					wp_safe_redirect( $url );
				}
			}

			if ( $gf_page == 'entry_list' ) {
				add_filter( 'set-screen-option', array( 'GFForms', 'set_screen_options' ), 10, 3 );
				add_filter( 'screen_settings', array( 'GFForms', 'show_screen_options' ), 10, 2 );
			}

			if ( $gf_page == 'form_list' ) {
				add_filter( 'set-screen-option', array( 'GFForms', 'set_screen_options' ), 10, 3 );
			}

			add_filter(	'wp_privacy_personal_data_exporters', array( 'GFForms', 'register_data_exporter' ),	10 );
			add_filter(	'wp_privacy_personal_data_erasers', array( 'GFForms', 'register_data_eraser' ),	10 );

		} else {
			add_action( 'wp_enqueue_scripts', array( 'GFForms', 'enqueue_scripts' ), 11 );
			add_action( 'wp', array( 'GFForms', 'ajax_parse_request' ), 10 );
		}

		// Add admin bar items
		add_action( 'wp_before_admin_bar_render', array( 'GFForms', 'admin_bar' ) );

		add_shortcode( 'gravityform', array( 'GFForms', 'parse_shortcode' ) );
		add_shortcode( 'gravityforms', array( 'GFForms', 'parse_shortcode' ) );

		// ManageWP premium update filters
		add_filter( 'mwp_premium_update_notification', array( 'GFForms', 'premium_update_push' ) );
		add_filter( 'mwp_premium_perform_update', array( 'GFForms', 'premium_update' ) );

		// Push Gravity Forms to the top of the list of plugins to make sure it's loaded before any add-ons
		add_action( 'activated_plugin', array( 'GFForms', 'load_first' ) );

		// Add the "Add Form" button to the editor. The customizer doesn't run in the admin context.
		if ( GFForms::page_supports_add_form_button() ) {
			require_once( GFCommon::get_base_path() . '/tooltips.php' );

			// Adding "embed form" button to the editor
			add_action( 'media_buttons', array( 'GFForms', 'add_form_button' ), 20 );
			// Adding the modal
			add_action( 'admin_print_footer_scripts', array( 'GFForms', 'add_mce_popup' ) );
		}
	}

	/**
	 * Ensures that Gravity Forms is loaded first.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return void
	 */
	public static function load_first() {
		$plugin_path    = basename( dirname( __FILE__ ) ) . '/gravityforms.php';
		$active_plugins = array_values( maybe_unserialize( self::get_wp_option( 'active_plugins' ) ) );
		$key            = array_search( $plugin_path, $active_plugins );
		if ( $key > 0 ) {
			array_splice( $active_plugins, $key, 1 );
			array_unshift( $active_plugins, $plugin_path );
			update_option( 'active_plugins', $active_plugins );
		}
	}

	/**
	 * Performs Gravity Forms deactivation tasks.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFCache::flush()
	 *
	 * @return void
	 */
	public static function deactivation_hook() {
		GFCache::flush( true );
		flush_rewrite_rules();
	}

	/**
	 * Performs Gravity Forms activation tasks.
	 *
	 * @since  2.3
	 * @access public
	 */
	public static function activation_hook() {
		self::init_background_upgrader();
		gf_upgrade()->maybe_upgrade();
	}

	/**
	 * Add Gravity Forms to the plugins that support logging.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $plugins Existing plugins that support logging.
	 *
	 * @return array $plugins Supported plugins.
	 */
	public static function set_logging_supported( $plugins ) {
		$plugins['gravityformsapi'] = 'Gravity Forms API';
		$plugins['gravityforms']    = 'Gravity Forms Core';

		return $plugins;
	}

	/**
	 * Gets the value of an option from the wp_options table.
	 *
	 * @since  Unknown
	 * @access public
	 * @global       $wpdb
	 *
	 * @param string $option_name The option to find.
	 *
	 * @return string The option value, if found.
	 */
	public static function get_wp_option( $option_name ) {
		global $wpdb;

		return $wpdb->get_var( $wpdb->prepare( "SELECT option_value FROM {$wpdb->prefix}options WHERE option_name=%s", $option_name ) );
	}

	/**
	 * Determines if a form should be processed, and passes it off to processing.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormsModel::get_form()
	 * @uses   GFCommon::get_base_path()
	 * @uses   GFFormDisplay::process_form()
	 * @uses   GFFormDisplay::process_send_resume_link()
	 *
	 * @return void
	 */
	public static function maybe_process_form() {

		$form_id = isset( $_POST['gform_submit'] ) ? absint( $_POST['gform_submit'] ) : 0;
		if ( $form_id ) {
			$form_info     = RGFormsModel::get_form( $form_id );
			$is_valid_form = $form_info && $form_info->is_active;

			if ( $is_valid_form ) {
				require_once( GFCommon::get_base_path() . '/form_display.php' );
				GFFormDisplay::process_form( $form_id );
			}
		} elseif ( isset( $_POST['gform_send_resume_link'] ) ) {
			require_once( GFCommon::get_base_path() . '/form_display.php' );
			GFFormDisplay::process_send_resume_link();
		}
	}

	/**
	 * Processes pages that are not loaded directly within WordPress
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFCommon::get_upload_page_slug()
	 * @uses   GFCommon::get_base_path()
	 *
	 * @return void
	 */
	public static function process_exterior_pages() {
		if ( rgempty( 'gf_page', $_GET ) ) {
			return;
		}

		$page = rgget( 'gf_page' );

		$is_legacy_upload_page = $_SERVER['REQUEST_METHOD'] == 'POST' && $page == 'upload';

		if ( $is_legacy_upload_page && ( ! defined( 'DOING_AJAX' ) || ! DOING_AJAX ) ) {
			_doing_it_wrong( 'gf_page=upload', 'gf_page=upload is now deprecated. Use GFCommon::get_upload_page_slug() instead', '1.9.6.13' );
		}

		$is_upload_page = $_SERVER['REQUEST_METHOD'] == 'POST' && $page == GFCommon::get_upload_page_slug();

		if ( $is_upload_page || $is_legacy_upload_page ) {
			require_once( GFCommon::get_base_path() . '/includes/upload.php' );
			exit();
		}

		// Ensure users are logged in
		if ( ! is_user_logged_in() ) {
			auth_redirect();
		}

		switch ( $page ) {
			case 'preview':
				require_once( GFCommon::get_base_path() . '/preview.php' );
				break;

			case 'print-entry' :
				require_once( GFCommon::get_base_path() . '/print-entry.php' );
				break;

			case 'select_columns' :
				require_once( GFCommon::get_base_path() . '/select_columns.php' );
				break;
		}
		exit();
	}

	/**
	 * Checks for Gravity Forms updates.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFCommon::check_update()
	 *
	 * @param GFAutoUpgrade $update_plugins_option The GFAutoUpgrade object.
	 *
	 * @return GFAutoUpgrade The GFAutoUpgrade object.
	 */
	public static function check_update( $update_plugins_option ) {
		if ( ! class_exists( 'GFCommon' ) ) {
			require_once( 'common.php' );
		}

		return GFCommon::check_update( $update_plugins_option, true );
	}

	/**
	 * Adds index and htaccess files to the upload root for security.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return void
	 */
	public static function add_security_files() {
		GFCommon::log_debug( __METHOD__ . '(): Start adding security files' );

		$upload_root = GFFormsModel::get_upload_root();

		if ( ! is_dir( $upload_root ) ) {
			return;
		}

		GFCommon::recursive_add_index_file( $upload_root );

		GFCommon::add_htaccess_file();
	}

	/**
	 * Self-heals suspicious files.
	 *
	 * @since  Unknown
	 */
	private static function do_self_healing() {

		GFCommon::log_debug( __METHOD__ . '(): Start self healing' );

		$gf_upload_root = GFFormsModel::get_upload_root();

		if ( ! is_dir( $gf_upload_root ) || is_link( $gf_upload_root ) ) {
			return;
		}

		self::rename_suspicious_files_recursive( $gf_upload_root );
	}

	/**
	 * Renames files with a .bak extension if they have a file extension that is not allowed in the Gravity Forms uploads folder.
	 *
	 * @since   Unknown
	 * @access  private
	 *
	 * @used-by GFForms::do_self_healing()
	 *
	 * @param string $dir The path to process.
	 */
	private static function rename_suspicious_files_recursive( $dir ) {
		if ( ! is_dir( $dir ) || is_link( $dir ) ) {
			return;
		}

		if ( ! ( $dir_handle = opendir( $dir ) ) ) {
			return;
		}

		// Ignores all errors
		set_error_handler( '__return_false', E_ALL );

		while ( false !== ( $file = readdir( $dir_handle ) ) ) {
			if ( is_dir( $dir . DIRECTORY_SEPARATOR . $file ) && $file != '.' && $file != '..' ) {
				self::rename_suspicious_files_recursive( $dir . DIRECTORY_SEPARATOR . $file );
			} elseif ( GFCommon::file_name_has_disallowed_extension( $file )
			           && ! GFCommon::match_file_extension( $file, array( 'htaccess', 'bak', 'html' ) )
			) {
				$mini_hash = substr( wp_hash( $file ), 0, 6 );
				$newName   = sprintf( '%s/%s.%s.bak', $dir, $file, $mini_hash );
				rename( $dir . '/' . $file, $newName );
			}
		}

		// Restores error handler
		restore_error_handler();

		closedir( $dir_handle );

		return;
	}

	/**
	 * Renames suspicious content within the wp_upload directory.
	 *
	 * @deprecated  2.4.11
	 *
	 * @since       Unknown
	 */
	private static function heal_wp_upload_dir() {
	    _deprecated_function( 'heal_wp_upload_dir', '2.4.11' );

		$wp_upload_dir = wp_upload_dir();

		$wp_upload_path = $wp_upload_dir['basedir'];

		if ( ! is_dir( $wp_upload_path ) || is_link( $wp_upload_path ) ) {
			return;
		}

		// ignores all errors
		set_error_handler( '__return_false', E_ALL );

		foreach ( glob( $wp_upload_path . DIRECTORY_SEPARATOR . '*_input_*.php' ) as $filename ) {
			$mini_hash = substr( wp_hash( $filename ), 0, 6 );
			$newName   = sprintf( '%s.%s.bak', $filename, $mini_hash );
			rename( $filename, $newName );
		}

		// restores error handler
		restore_error_handler();

		return;
	}

	/**
	 * Defines styles needed for "no conflict mode"
	 *
	 * @since  Unknown
	 * @access public
	 * @global $wp_styles
	 *
	 * @uses   GFForms::no_conflict_mode()
	 */
	public static function no_conflict_mode_style() {
		if ( ! get_option( 'gform_enable_noconflict' ) ) {
			return;
		}

		global $wp_styles;
		$wp_required_styles = array( 'admin-bar', 'colors', 'ie', 'wp-admin', 'editor-style' );
		$gf_required_styles = array(
			'common'                     => array( 'gform_tooltip', 'gform_font_awesome', 'gform_admin' ),
			'gf_edit_forms'              => array(
				'thickbox',
				'editor-buttons',
				'wp-jquery-ui-dialog',
				'media-views',
				'buttons',
				'wp-pointer',
				'gform_chosen',
			),
			'gf_edit_forms_settings' => array(
				'thickbox',
				'editor-buttons',
				'wp-jquery-ui-dialog',
				'media-views',
				'buttons',
			),
			'gf_new_form'                => array( 'thickbox' ),
			'gf_entries'                 => array( 'thickbox', 'gform_chosen' ),
			'gf_settings'                => array(),
			'gf_export'                  => array(),
			'gf_help'                    => array(),
			'gf_system_status'			 => array( 'thickbox' ),
		);

		self::no_conflict_mode( $wp_styles, $wp_required_styles, $gf_required_styles, 'styles' );
	}


	/**
	 * Defines scripts needed for "no conflict mode".
	 *
	 * @since  Unknown
	 * @access public
	 * @global $wp_scripts
	 *
	 * @uses   GFForms::no_conflict_mode()
	 */
	public static function no_conflict_mode_script() {
		if ( ! get_option( 'gform_enable_noconflict' ) ) {
			return;
		}

		global $wp_scripts;

		$wp_required_scripts = array( 'admin-bar', 'common', 'jquery-color', 'utils', 'svg-painter' );
		$gf_required_scripts = array(
			'common'                     => array( 'gform_tooltip_init', 'sack' ),
			'gf_edit_forms'              => array(
				'backbone',
				'editor',
				'gform_floatmenu',
				'gform_forms',
				'gform_form_admin',
				'gform_form_editor',
				'gform_gravityforms',
				'gform_json',
				'gform_menu',
				'gform_placeholder',
				'jquery-ui-autocomplete',
				'jquery-ui-core',
				'jquery-ui-datepicker',
				'jquery-ui-sortable',
				'jquery-ui-draggable',
				'jquery-ui-droppable',
				'jquery-ui-tabs',
				'json2',
				'media-editor',
				'media-models',
				'media-upload',
				'media-views',
				'plupload',
				'plupload-flash',
				'plupload-html4',
				'plupload-html5',
				'quicktags',
				'rg_currency',
				'thickbox',
				'word-count',
				'wp-plupload',
				'wpdialogs-popup',
				'wplink',
				'wp-pointer',
				'gform_chosen',
			),
			'gf_edit_forms_settings' => array(
				'editor',
				'word-count',
				'quicktags',
				'wpdialogs-popup',
				'media-upload',
				'wplink',
				'backbone',
				'jquery-ui-sortable',
				'json2',
				'media-editor',
				'media-models',
				'media-views',
				'plupload',
				'plupload-flash',
				'plupload-html4',
				'plupload-html5',
				'plupload-silverlight',
				'wp-plupload',
				'gform_placeholder',
				'gform_json',
				'gform_gravityforms',
				'gform_forms',
				'gform_form_admin',
				'jquery-ui-datepicker',
				'gform_masked_input',
				'sack',
				'jquery-ui-autocomplete',
				'wp-tinymce',
				'wp-tinymce-root',
				'wp-tinymce-lists',
			),
			'gf_new_form'                => array(
				'thickbox',
				'jquery-ui-core',
				'jquery-ui-sortable',
				'jquery-ui-tabs',
				'rg_currency',
				'gform_gravityforms',
				'gform_json',
				'gform_form_admin',
			),
			'gf_entries'                 => array(
				'thickbox',
				'gform_gravityforms',
				'wp-lists',
				'gform_json',
				'gform_field_filter',
				'plupload-all',
				'postbox',
				'gform_chosen',
			),
			'gf_settings'                => array(),
			'gf_export'                  => array( 'gform_form_admin', 'jquery-ui-datepicker', 'gform_field_filter' ),
			'gf_help'                    => array(),
			'gf_system_status'           => array(
				'gform_system_report_clipboard',
				'thickbox',
				'gform_placeholder'),
		);

		self::no_conflict_mode( $wp_scripts, $wp_required_scripts, $gf_required_scripts, 'scripts' );
	}

	/**
	 * Runs "no conflict mode".
	 *
	 * @since   Unknown
	 * @access  private
	 *
	 * @used-by GFForms::no_conflict_mode_style()
	 * @used-by GFForms::no_conflict_mode_script()
	 *
	 * @param WP_Scripts $wp_objects          WP_Scripts object.
	 * @param array      $wp_required_objects Scripts required by WordPress Core.
	 * @param array      $gf_required_objects Scripts required by Gravity Forms.
	 * @param string     $type                Determines if scripts or styles are being run through the function.
	 */
	private static function no_conflict_mode( &$wp_objects, $wp_required_objects, $gf_required_objects, $type = 'scripts' ) {

		$current_page = trim( strtolower( rgget( 'page' ) ) );
		if ( empty( $current_page ) ) {
			$current_page = trim( strtolower( rgget( 'gf_page' ) ) );
		}
		if ( empty( $current_page ) ) {
			$current_page = RG_CURRENT_PAGE;
		}

		$view         = rgempty( 'view', $_GET ) ? 'default' : rgget( 'view' );
		$page_objects = isset( $gf_required_objects[ $current_page . '_' . $view ] ) ? $gf_required_objects[ $current_page . '_' . $view ] : rgar( $gf_required_objects, $current_page );

		//disable no-conflict if $page_objects is false
		if ( $page_objects === false ) {
			return;
		}

		if ( ! is_array( $page_objects ) ) {
			$page_objects = array();
		}

		//merging wp scripts with gravity forms scripts
		$required_objects = array_merge( $wp_required_objects, $gf_required_objects['common'], $page_objects );

		//allowing addons or other products to change the list of no conflict scripts
		$required_objects = apply_filters( "gform_noconflict_{$type}", $required_objects );

		$queue = array();
		foreach ( $wp_objects->queue as $object ) {
			if ( in_array( $object, $required_objects ) ) {
				$queue[] = $object;
			}
		}
		$wp_objects->queue = $queue;

		$required_objects = self::add_script_dependencies( $wp_objects->registered, $required_objects );

		//unregistering scripts
		$registered = array();
		foreach ( $wp_objects->registered as $script_name => $script_registration ) {
			if ( in_array( $script_name, $required_objects ) ) {
				$registered[ $script_name ] = $script_registration;
			}
		}
		$wp_objects->registered = $registered;
	}

	/**
	 * Adds script dependencies needed.
	 *
	 * @since   Unknown
	 * @access  private
	 *
	 * @used-by GFForms::no_conflict_mode()
	 *
	 * @param array $registered Registered scripts.
	 * @param array $scripts    Required scripts.
	 *
	 * @return array $scripts Scripts including dependencies.
	 */
	private static function add_script_dependencies( $registered, $scripts ) {

		//gets all dependent scripts linked to the $scripts array passed
		do {
			$dependents = array();
			foreach ( $scripts as $script ) {
				$deps = isset( $registered[ $script ] ) && is_array( $registered[ $script ]->deps ) ? $registered[ $script ]->deps : array();
				foreach ( $deps as $dep ) {
					if ( ! in_array( $dep, $scripts ) && ! in_array( $dep, $dependents ) ) {
						$dependents[] = $dep;
					}
				}
			}
			$scripts = array_merge( $scripts, $dependents );
		} while ( ! empty( $dependents ) );

		return $scripts;
	}

	/**
	 * Integration with ManageWP.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $premium_update ManageWP update array.
	 *
	 * @return array $premium_update
	 */
	public static function premium_update_push( $premium_update ) {

		if ( ! function_exists( 'get_plugin_data' ) ) {
			include_once( ABSPATH . 'wp-admin/includes/plugin.php' );
		}

		$update = GFCommon::get_version_info();
		if ( rgar( $update, 'is_valid_key' ) == true && version_compare( GFCommon::$version, $update['version'], '<' ) ) {
			$gforms                = get_plugin_data( __FILE__ );
			$gforms['type']        = 'plugin';
			$gforms['slug']        = 'gravityforms/gravityforms.php';
			$gforms['new_version'] = ! rgempty( 'version', $update ) ? $update['version'] : false;
			$premium_update[]      = $gforms;
		}

		return $premium_update;
	}

	/**
	 * Integration with ManageWP.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $premium_update ManageWP update array.
	 *
	 * @return array $premium_update.
	 */
	public static function premium_update( $premium_update ) {

		if ( ! function_exists( 'get_plugin_data' ) ) {
			include_once( ABSPATH . 'wp-admin/includes/plugin.php' );
		}

		$update = GFCommon::get_version_info();
		if ( rgar( $update, 'is_valid_key' ) == true && version_compare( GFCommon::$version, $update['version'], '<' ) ) {
			$gforms         = get_plugin_data( __FILE__ );
			$gforms['slug'] = 'gravityforms/gravityforms.php'; // If not set by default, always pass theme template
			$gforms['type'] = 'plugin';
			$gforms['url']  = ! rgempty( 'url', $update ) ? $update['url'] : false; // OR provide your own callback function for managing the update

			array_push( $premium_update, $gforms );
		}

		return $premium_update;
	}

	/**
	 * Validates that Gravity Forms is doing the database upgrade, and has permissions to do so.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param null   $do_upgrade Not used.
	 * @param string $hook_extra The plugin triggering the upgrade.
	 *
	 * @return bool|WP_Error True if successful.  Otherwise WP_Error object.
	 */
	public static function validate_upgrade( $do_upgrade, $hook_extra ) {

		return gf_upgrade()->validate_upgrade( $do_upgrade, $hook_extra );
	}





	// # PERMISSIONS ---------------------------------------------------------------------------------------------------

	/**
	 * Determines if a user has a particular capability.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $all_caps All capabilities.
	 * @param array $cap      Required capability.  Stored in the [0] key.
	 * @param array $args     Not used.
	 *
	 * @return array $all_caps All capabilities.
	 */
	public static function user_has_cap( $all_caps, $cap, $args ) {
		$gf_caps    = GFCommon::all_caps();
		$capability = rgar( $cap, 0 );
		if ( $capability != 'gform_full_access' ) {
			return $all_caps;
		}

		if ( ! self::has_members_plugin() ) {
			//give full access to administrators if the members plugin is not installed
			if ( current_user_can( 'administrator' ) || ( is_multisite() && is_super_admin() ) ) {
				$all_caps['gform_full_access'] = true;
			}
		} elseif ( current_user_can( 'administrator' ) || ( is_multisite() && is_super_admin() ) ) {

			//checking if user has any GF permission.
			$has_gf_cap = false;
			foreach ( $gf_caps as $gf_cap ) {
				if ( rgar( $all_caps, $gf_cap ) ) {
					$has_gf_cap = true;
				}
			}

			if ( ! $has_gf_cap ) {
				//give full access to administrators if none of the GF permissions are active by the Members plugin
				$all_caps['gform_full_access'] = true;
			}
		}

		return $all_caps;
	}

	/**
	 * Provides the Members plugin with Gravity Forms lists of capabilities.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $caps All capabilities.
	 *
	 * @return array $caps The capabilities list.
	 */
	public static function members_get_capabilities( $caps ) {
		return array_merge( $caps, GFCommon::all_caps() );
	}

	/**
	 * Register the Gravity Forms capabilities group with the Members plugin.
	 *
	 * @since  2.4
	 * @access public
	 */
	public static function members_register_cap_group() {

		members_register_cap_group(
			'gravityforms',
			array(
				'label' => esc_html__( 'Gravity Forms', 'gravityforms' ),
				'icon'  => 'dashicons-gravityforms',
				'caps'  => array(),
			)
		);

	}

	/**
	 * Register the capabilities and their human readable labels with the Members plugin.
	 *
	 * @since  2.4
	 * @access public
	 */
	public static function members_register_caps() {

		$caps = array(
			'gravityforms_create_form'      => esc_html__( 'Create Forms', 'gravityforms' ),
			'gravityforms_delete_forms'     => esc_html__( 'Delete Forms', 'gravityforms' ),
			'gravityforms_edit_forms'       => esc_html__( 'Edit Forms', 'gravityforms' ),
			'gravityforms_preview_forms'    => esc_html__( 'Preview Forms', 'gravityforms' ),
			'gravityforms_view_entries'     => esc_html__( 'View Entries', 'gravityforms' ),
			'gravityforms_edit_entries'     => esc_html__( 'Edit Entries', 'gravityforms' ),
			'gravityforms_delete_entries'   => esc_html__( 'Delete Entries', 'gravityforms' ),
			'gravityforms_view_entry_notes' => esc_html__( 'View Entry Notes', 'gravityforms' ),
			'gravityforms_edit_entry_notes' => esc_html__( 'Edit Entry Notes', 'gravityforms' ),
			'gravityforms_export_entries'   => esc_html__( 'Import/Export', 'gravityforms' ),
			'gravityforms_view_settings'    => esc_html__( 'View Plugin Settings', 'gravityforms' ),
			'gravityforms_edit_settings'    => esc_html__( 'Edit Plugin Settings', 'gravityforms' ),
			'gravityforms_view_updates'     => esc_html__( 'Manage Updates', 'gravityforms' ),
			'gravityforms_view_addons'      => esc_html__( 'Manage Add-Ons', 'gravityforms' ),
			'gravityforms_system_status'    => esc_html__( 'View System Status', 'gravityforms' ),
			'gravityforms_uninstall'        => esc_html__( 'Uninstall Gravity Forms', 'gravityforms' ),
		);

		foreach ( $caps as $cap => $label ) {
			members_register_cap(
				$cap,
				array(
					'label' => $label,
					'group' => 'gravityforms',
				)
			);
		}

	}

	/**
	 * Register Gravity Forms capabilities group with User Role Editor plugin.
	 *
	 * @since  2.4
	 *
	 * @param array $groups Existing capabilities groups.
	 *
	 * @return array
	 */
	public static function filter_ure_capabilities_groups_tree( $groups = array() ) {

		$groups['gravityforms'] = array(
			'caption' => esc_html__( 'Gravity Forms', 'gravityforms' ),
			'parent'  => 'custom',
			'level'   => 2,
		);

		return $groups;

	}

	/**
	 * Register Gravity Forms capabilities with Gravity Forms group in User Role Editor plugin.
	 *
	 * @since  2.4
	 *
	 * @param array  $groups Current capability groups.
	 * @param string $cap_id Capability identifier.
	 *
	 * @return array
	 */
	public static function filter_ure_custom_capability_groups( $groups = array(), $cap_id = '' ) {

		// Get Gravity Forms capabilities.
		$caps = GFCommon::all_caps();

		// If capability belongs to Gravity Forms, register it to group.
		if ( in_array( $cap_id, $caps, true ) ) {
			$groups[] = 'gravityforms';
		}

		return $groups;

	}

	/**
	 * Tests if the upload folder is writable and displays an error message if not.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return void
	 */
	public static function check_upload_folder() {
		// Check if upload folder is writable
		$folder = RGFormsModel::get_upload_root();
		if ( empty( $folder ) ) {
			echo "<div class='error'>" . esc_html__( 'Upload folder is not writable. Export and file upload features will not be functional.', 'gravityforms' ) . '</div>';
		}
	}

	/**
	 * Checks if a Gravity Forms AJAX action is being performed.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return bool True if performing a Gravity Forms AJAX request. False, otherwise.
	 */
	public static function is_gravity_ajax_action() {
		//Gravity Forms AJAX requests
		$current_action  = self::post( 'action' );
		$gf_ajax_actions = array(
			'rg_save_form',
			'rg_change_input_type',
			'rg_refresh_field_preview',
			'rg_add_field',
			'rg_duplicate_field',
			'rg_delete_field',
			'rg_select_export_form',
			'rg_start_export',
			'gf_upgrade_license',
			'gf_delete_custom_choice',
			'gf_save_custom_choice',
			'gf_get_notification_post_categories',
			'rg_update_lead_property',
			'delete-gf_entry',
			'rg_update_form_active',
			'rg_update_notification_active',
			'rg_update_confirmation_active',
			'gf_resend_notifications',
			'rg_dismiss_upgrade',
			'gf_save_confirmation',
			'gf_process_export',
			'gf_download_export',
			'gf_dismiss_message',
			'gf_force_upgrade',
		);

		if ( defined( 'DOING_AJAX' ) && DOING_AJAX && in_array( $current_action, $gf_ajax_actions ) ) {
			return true;
		}

		// Not a Gravity Forms ajax request.
		return false;
	}

	// Returns true if the current page is one of Gravity Forms pages. Returns false if not
	/**
	 * Determines if the current page is part of Gravity Forms.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return bool
	 */
	public static function is_gravity_page() {

		// Gravity Forms pages
		$current_page = trim( strtolower( self::get( 'page' ) ) );
		$gf_pages     = array( 'gf_edit_forms', 'gf_new_form', 'gf_entries', 'gf_settings', 'gf_export', 'gf_help', 'gf_addons', 'gf_system_status' );

		return in_array( $current_page, $gf_pages );
	}

	/**
	 * Creates the "Forms" left nav.
	 *
	 * WordPress generates the page hook suffix and screen ID by passing the translated menu title through sanitize_title().
	 * Screen options and metabox preferences are stored using the screen ID therefore:
	 * 1. The page suffix or screen ID should never be hard-coded. Use get_current_screen()->id.
	 * 2. The page suffix and screen ID must never change.
	 *  e.g. When an update for Gravity Forms is available an icon will be added to the the menu title.
	 *  The HTML for the icon will be stripped entirely by sanitize_title() because the number 1 is encoded.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return void
	 */
	public static function create_menu() {

		$has_full_access = current_user_can( 'gform_full_access' );
		$min_cap         = GFCommon::current_user_can_which( GFCommon::all_caps() );
		if ( empty( $min_cap ) ) {
			$min_cap = 'gform_full_access';
		}

		$addon_menus = array();
		$addon_menus = apply_filters( 'gform_addon_navigation', $addon_menus );

		$parent_menu = self::get_parent_menu( $addon_menus );

		// Add a top-level left nav.
		$update_icon = GFCommon::has_update() && current_user_can( 'install_plugins' ) ? "<span title='" . esc_attr( __( 'Update Available', 'gravityforms' ) ) . "' class='update-plugins count-1'><span class='update-count'>&#49;</span></span>" : '';

		$admin_icon = self::get_admin_icon_b64( GFForms::is_gravity_page() ? '#fff' : false );

		$forms_hook_suffix = add_menu_page( __( 'Forms', 'gravityforms' ), __( 'Forms', 'gravityforms' ) . $update_icon, $has_full_access ? 'gform_full_access' : $min_cap, $parent_menu['name'], $parent_menu['callback'], $admin_icon, apply_filters( 'gform_menu_position', '16.9' ) );

		add_action( 'load-' . $forms_hook_suffix, array( 'GFForms', 'load_screen_options' ) );

		// Adding submenu pages
		add_submenu_page( $parent_menu['name'], __( 'Forms', 'gravityforms' ), __( 'Forms', 'gravityforms' ), $has_full_access ? 'gform_full_access' : 'gravityforms_edit_forms', 'gf_edit_forms', array(
			'GFForms',
			'forms'
		) );

		add_submenu_page( $parent_menu['name'], __( 'New Form', 'gravityforms' ), __( 'New Form', 'gravityforms' ), $has_full_access ? 'gform_full_access' : 'gravityforms_create_form', 'gf_new_form', array(
			'GFForms',
			'new_form'
		) );

		$entries_hook_suffix = add_submenu_page( $parent_menu['name'], __( 'Entries', 'gravityforms' ), __( 'Entries', 'gravityforms' ), $has_full_access ? 'gform_full_access' : 'gravityforms_view_entries', 'gf_entries', array(
			'GFForms',
			'all_leads_page'
		) );

		add_action( 'load-' . $entries_hook_suffix, array( 'GFForms', 'load_screen_options' ) );

		if ( is_array( $addon_menus ) ) {
			foreach ( $addon_menus as $addon_menu ) {
				add_submenu_page( esc_html( $parent_menu['name'] ), esc_html( $addon_menu['label'] ), esc_html( $addon_menu['label'] ), $has_full_access ? 'gform_full_access' : $addon_menu['permission'], esc_html( $addon_menu['name'] ), $addon_menu['callback'] );
			}
		}

		add_submenu_page( $parent_menu['name'], __( 'Settings', 'gravityforms' ), __( 'Settings', 'gravityforms' ), $has_full_access ? 'gform_full_access' : 'gravityforms_view_settings', 'gf_settings', array(
			'GFForms',
			'settings_page'
		) );

		add_submenu_page( $parent_menu['name'], __( 'Import/Export', 'gravityforms' ), __( 'Import/Export', 'gravityforms' ), $has_full_access ? 'gform_full_access' : 'gravityforms_export_entries', 'gf_export', array(
			'GFForms',
			'export_page'
		) );

		if ( current_user_can( 'install_plugins' ) ) {
			add_submenu_page( $parent_menu['name'], __( 'Add-Ons', 'gravityforms' ), __( 'Add-Ons', 'gravityforms' ), $has_full_access ? 'gform_full_access' : 'gravityforms_view_addons', 'gf_addons', array(
				'GFForms',
				'addons_page'
			) );
		}

		add_submenu_page( $parent_menu['name'], __( 'System Status', 'gravityforms' ), __( 'System Status', 'gravityforms' ), $has_full_access ? 'gform_full_access' : 'gravityforms_system_status', 'gf_system_status', array(
			'GFForms',
			'system_status'
		) );

		add_submenu_page( $parent_menu['name'], __( 'Help', 'gravityforms' ), __( 'Help', 'gravityforms' ), $has_full_access ? 'gform_full_access' : $min_cap, 'gf_help', array(
			'GFForms',
			'help_page'
		) );

	}

	/**
	 * Gets the admin icon for the Forms menu item
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param bool|string $color The hex color if changing the color of the icon.  Defaults to false.
	 *
	 * @return string Base64 encoded icon string.
	 */
	public static function get_admin_icon_b64( $color = false ) {

		// Replace the hex color (default was #999999) to %s; it will be replaced by the passed $color

		if ( $color ) {
			$svg_xml = '<?xml version="1.0" encoding="utf-8"?>' . self::get_admin_icon_svg( $color );
			$icon    = sprintf( 'data:image/svg+xml;base64,%s', base64_encode( sprintf( $svg_xml, $color ) ) );
		} else {
			$svg_b64 = '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';

			$icon = 'data:image/svg+xml;base64,' . $svg_b64;
		}

		return $icon;
	}

	/**
	 * Returns the admin icon in SVG format.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $color The hex color if changing the color of the icon.  Defaults to #999999.
	 *
	 * @return string
	 */
	public static function get_admin_icon_svg( $color = '#999999' ) {
		$svg = '<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="-15 77 581 640" enable-background="new -15 77 581 640" xml:space="preserve"><g id="Layer_2"><path fill="%s" d="M489.5,227L489.5,227L315.9,126.8c-22.1-12.8-58.4-12.8-80.5,0L61.8,227c-22.1,12.8-40.3,44.2-40.3,69.7v200.5c0,25.6,18.1,56.9,40.3,69.7l173.6,100.2c22.1,12.8,58.4,12.8,80.5,0L489.5,567c22.2-12.8,40.3-44.2,40.3-69.7V296.8C529.8,271.2,511.7,239.8,489.5,227z M401,300.4v59.3H241v-59.3H401z M163.3,490.9c-16.4,0-29.6-13.3-29.6-29.6c0-16.4,13.3-29.6,29.6-29.6s29.6,13.3,29.6,29.6C192.9,477.6,179.6,490.9,163.3,490.9z M163.3,359.7c-16.4,0-29.6-13.3-29.6-29.6s13.3-29.6,29.6-29.6s29.6,13.3,29.6,29.6S179.6,359.7,163.3,359.7z M241,490.9v-59.3h160v59.3H241z"/></g></svg>';

		return sprintf( $svg, $color );
	}

	/**
	 * Returns the parent menu item.
	 *
	 * It needs to be the same as the first sub-menu (otherwise WP will duplicate the main menu as a sub-menu).
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $addon_menus Contains the add-on menu items.
	 *
	 * @return array $parent The parent menu array.
	 */
	public static function get_parent_menu( $addon_menus ) {

		if ( GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ) {
			$parent = array( 'name' => 'gf_edit_forms', 'callback' => array( 'GFForms', 'forms' ) );
		} else if ( GFCommon::current_user_can_any( 'gravityforms_create_form' ) ) {
			$parent = array( 'name' => 'gf_new_form', 'callback' => array( 'GFForms', 'new_form' ) );
		} else if ( GFCommon::current_user_can_any( 'gravityforms_view_entries' ) ) {
			$parent = array( 'name' => 'gf_entries', 'callback' => array( 'GFForms', 'all_leads_page' ) );
		} else if ( is_array( $addon_menus ) && sizeof( $addon_menus ) > 0 ) {
			foreach ( $addon_menus as $addon_menu ) {
				if ( GFCommon::current_user_can_any( $addon_menu['permission'] ) ) {
					$parent = array( 'name' => $addon_menu['name'], 'callback' => $addon_menu['callback'] );
					break;
				}
			}
		} else if ( GFCommon::current_user_can_any( 'gravityforms_view_settings' ) ) {
			$parent = array( 'name' => 'gf_settings', 'callback' => array( 'GFForms', 'settings_page' ) );
		} else if ( GFCommon::current_user_can_any( 'gravityforms_export_entries' ) ) {
			$parent = array( 'name' => 'gf_export', 'callback' => array( 'GFForms', 'export_page' ) );
		} else if ( GFCommon::current_user_can_any( 'gravityforms_view_addons' ) ) {
			$parent = array( 'name' => 'gf_addons', 'callback' => array( 'GFForms', 'addons_page' ) );
		} else if ( GFCommon::current_user_can_any( 'gravityforms_system_status' ) ) {
			$parent = array( 'name' => 'gf_system_status', 'callback' => array( 'GFForms', 'system_status_page' ) );
		} else if ( GFCommon::current_user_can_any( GFCommon::all_caps() ) ) {
			$parent = array( 'name' => 'gf_help', 'callback' => array( 'GFForms', 'help_page' ) );
		}

		return $parent;
	}

	/**
	 * Modifies the page title when on Gravity Forms settings pages.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $admin_title The current admin title
	 * @param string $title       Not used.
	 *
	 * @return string The modified admin title.
	 */
	public static function modify_admin_title( $admin_title, $title ) {

		$subview = rgget( 'subview' );
		$form_id = rgget( 'id' );

		if ( ! $form_id || rgget( 'page' ) != 'gf_edit_forms' || rgget( 'view' ) != 'settings' ) {
			return $admin_title;
		}

		require_once( GFCommon::get_base_path() . '/form_settings.php' );

		$setting_tabs = GFFormSettings::get_tabs( $form_id );
		$page_title   = '';

		foreach ( $setting_tabs as $tab ) {
			if ( $tab['name'] == $subview ) {
				$page_title = $tab['label'];
			}
		}

		if ( $page_title ) {
			$admin_title = sprintf( __( '%1$s &lsaquo; %2$s &#8212; WordPress', 'gravityforms' ), esc_html( $page_title ), $admin_title );
		}

		return $admin_title;
	}

	/**
	 * Parses Gravity Forms shortcode attributes and displays the form.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $attributes The shortcode attributes.
	 * @param null  $content    Defines the content of the shortcode.  Defaults to null.
	 *
	 * @return mixed|string|void
	 */
	public static function parse_shortcode( $attributes, $content = null ) {

		extract(
			shortcode_atts(
				array(
					'title'        => true,
					'description'  => true,
					'id'           => 0,
					'name'         => '',
					'field_values' => '',
					'ajax'         => false,
					'tabindex'     => 0,
					'action'       => 'form',
				), $attributes, 'gravityforms'
			)
		);

		$shortcode_string = '';

		switch ( $action ) {
			case 'conditional':
				$shortcode_string = GFCommon::conditional_shortcode( $attributes, $content );
				break;

			default:

				// don't retrieve form markup for custom actions
				if ( $action && $action != 'form' ) {
					break;
				}

				//displaying form
				$title        = strtolower( $title ) == 'false' ? false : true;
				$description  = strtolower( $description ) == 'false' ? false : true;
				$field_values = htmlspecialchars_decode( $field_values );
				$field_values = str_replace( '&#038;', '&', $field_values );

				$ajax = strtolower( $ajax ) == 'true' ? true : false;

				//using name to lookup form if id is not specified
				if ( empty( $id ) ) {
					$id = $name;
				}

				parse_str( $field_values, $field_value_array ); //parsing query string like string for field values and placing them into an associative array
				$field_value_array = stripslashes_deep( $field_value_array );

				$shortcode_string = self::get_form( $id, $title, $description, false, $field_value_array, $ajax, $tabindex );

		}

		/**
		 * Filters the shortcode.
		 *
		 * @since Unknown
		 *
		 * @param string $shortcode_string The full shortcode string.
		 * @param array  $attributes       The attributes within the shortcode.
		 * @param string $content          The content of the shortcode, if available.
		 */
		$shortcode_string = apply_filters( "gform_shortcode_{$action}", $shortcode_string, $attributes, $content );

		return $shortcode_string;
	}

	/**
	 * Includes the add-on framework.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function include_addon_framework() {
		require_once( GFCommon::get_base_path() . '/includes/addon/class-gf-addon.php' );
	}

	/**
	 * Includes the feed class for the add-on framework.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function include_feed_addon_framework() {
		require_once( GFCommon::get_base_path() . '/includes/addon/class-gf-feed-addon.php' );
	}

	/**
	 * Includes the payment class for te add-on framework.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function include_payment_addon_framework() {
		require_once( GFCommon::get_base_path() . '/includes/addon/class-gf-payment-addon.php' );
	}

	/**
	 * Includes the Gravity API
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function include_gravity_api() {
		require_once( GFCommon::get_base_path() . '/includes/class-gravity-api.php' );
	}

	//-------------------------------------------------
	//----------- AJAX --------------------------------

	/**
	 * Parses AJAX requests.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param null $wp Not used.
	 */
	public static function ajax_parse_request( $wp ) {
		if ( isset( $_POST['gform_ajax'] ) ) {
			parse_str( $_POST['gform_ajax'], $args );

			$form_id             = absint( $args['form_id'] );
			$display_title       = (bool) $args['title'];
			$display_description = (bool) $args['description'];
			$tabindex            = isset( $args['tabindex'] ) ? absint( $args['tabindex'] ) : 1;

			parse_str( $_POST['gform_field_values'], $field_values );

			require_once( GFCommon::get_base_path() . '/form_display.php' );
			$result = GFFormDisplay::get_form( $form_id, $display_title, $display_description, false, $field_values, true, $tabindex );
			die( $result );
		}
	}

	//------------------------------------------------------
	//------------- PAGE/POST EDIT PAGE ---------------------

	/**
	 * Determines if the "Add Form" button should be added to the page.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return boolean $display_add_form_button True if the page is supported.  False otherwise.
	 */
	public static function page_supports_add_form_button() {
		$is_post_edit_page = in_array( RG_CURRENT_PAGE, array(
			'post.php',
			'page.php',
			'page-new.php',
			'post-new.php',
			'customize.php',
		) );

		$display_add_form_button = apply_filters( 'gform_display_add_form_button', $is_post_edit_page );

		return $display_add_form_button;
	}

	/**
	 * Creates the "Add Form" button.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function add_form_button() {

		$is_add_form_page = self::page_supports_add_form_button();
		if ( ! $is_add_form_page ) {
			return;
		}

		// display button matching new UI
		echo '<style>.gform_media_icon{
                background-position: center center;
			    background-repeat: no-repeat;
			    background-size: 16px auto;
			    float: left;
			    height: 16px;
			    margin: 0;
			    text-align: center;
			    width: 16px;
				padding-top:10px;
                }
                .gform_media_icon:before{
                color: #999;
			    padding: 7px 0;
			    transition: all 0.1s ease-in-out 0s;
                }
                .wp-core-ui a.gform_media_link{
                 padding-left: 0.4em;
                }
             </style>
              <a href="#" class="button gform_media_link" id="add_gform" aria-label="' . esc_attr__( 'Add Gravity Form', 'gravityforms' ) . '"><div class="gform_media_icon svg" style="background-image: url(\'' . self::get_admin_icon_b64() . '\')"><br /></div><div style="padding-left: 20px;">' . esc_html__( 'Add Form', 'gravityforms' ) . '</div></a>';
	}

	/**
	 * Displays the popup to insert a form to a post/page.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function add_mce_popup() {
		?>
		<script>
			function InsertForm() {
				var form_id = jQuery("#add_form_id").val();
				if (form_id == "") {
					alert(<?php echo json_encode( __( 'Please select a form', 'gravityforms' ) ); ?>);
					return;
				}

				var form_name = jQuery("#add_form_id option[value='" + form_id + "']").text().replace(/[\[\]]/g, '');
				var display_title = jQuery("#display_title").is(":checked");
				var display_description = jQuery("#display_description").is(":checked");
				var ajax = jQuery("#gform_ajax").is(":checked");
				var title_qs = !display_title ? " title=\"false\"" : "";
				var description_qs = !display_description ? " description=\"false\"" : "";
				var ajax_qs = ajax ? " ajax=\"true\"" : "";

				window.send_to_editor("[gravityform id=\"" + form_id + "\" name=\"" + form_name + "\"" + title_qs + description_qs + ajax_qs + "]");
			}
		</script>

		<div id="select_gravity_form" style="display:none;">

			<div id="gform-shortcode-ui-wrap" class="wrap <?php echo GFCommon::get_browser_class() ?>">

				<div id="gform-shortcode-ui-container"></div>

			</div>


		</div>

		<?php
	}


	//------------------------------------------------------
	//------------- PLUGINS PAGE ---------------------------
	//------------------------------------------------------

	/**
	 * Creates the Settings link within the Plugins page.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array  $links Links associated with the plugin.
	 * @param string $file  The plugin filename.
	 *
	 * @return array $links Links associated with the plugin, after the Settings link is added.
	 */
	public static function plugin_settings_link( $links, $file ) {
		if ( $file != plugin_basename( __FILE__ ) ) {
			return $links;
		}

		array_unshift( $links, '<a href="' . esc_url( admin_url( 'admin.php' ) ) . '?page=gf_settings">' . esc_html__( 'Settings', 'gravityforms' ) . '</a>' );

		return $links;
	}

	/**
	 * Displays messages for the Gravity Forms listing on the Plugins page.
	 *
	 * Displays if the key is invalid or an update is available.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $plugin_name The plugin filename.  Immediately overwritten.
	 */
	public static function plugin_row( $plugin_name ) {

		if ( $plugin_name == 'gravityforms/gravityforms.php' ) {

			$version_info = GFCommon::get_version_info();

			if ( ! rgar( $version_info, 'is_valid_key' ) ) {

				$new_version = version_compare( GFCommon::$version, $version_info['version'], '<' ) ? esc_html__( 'There is a new version of Gravity Forms available.', 'gravityforms' ) . ' <a class="thickbox" title="Gravity Forms" href="plugin-install.php?tab=plugin-information&plugin=gravityforms&TB_iframe=true&width=640&height=808">' . sprintf( esc_html__( 'View version %s Details', 'gravityforms' ), $version_info['version'] ) . '</a>. ' : '';

				echo '</tr><tr class="plugin-update-tr"><td colspan="3" class="plugin-update"><div class="update-message">' . $new_version . sprintf( esc_html__( '%sRegister%s your copy of Gravity Forms to receive access to automatic upgrades and support. Need a license key? %sPurchase one now%s.', 'gravityforms' ), '<a href="' . admin_url() . 'admin.php?page=gf_settings">', '</a>', '<a href="https://www.gravityforms.com">', '</a>' ) . '</div></td>';
			}

			return;
		}

		$add_ons = gf_upgrade()->get_min_addon_requirements();

		if ( isset( $add_ons[ $plugin_name ] ) ) {
			$plugin_path = WP_PLUGIN_DIR . DIRECTORY_SEPARATOR . $plugin_name;
			if ( ! file_exists( $plugin_path ) ) {
				return;
			}
			$plugin_data     = get_plugin_data( $plugin_path, false, false );
			$current_version = $plugin_data['Version'];
			$add_on          = $add_ons[ $plugin_name ];
			$min_version     = $add_on['min_version'];
			if ( version_compare( $current_version, $min_version, '<' ) ) {
				$name = $add_on['name'];
				/* translators: 1: The name of the add-on, 2: version number. */
				$message = esc_html__( 'This version of the %1$s is not compatible with the version of Gravity Forms that is installed. Upgrade this add-on to version %2$s or greater to avoid compatibility issues and potential loss of data.', 'gravityforms' );
				echo '</tr><tr class="plugin-update-tr"><td colspan="3" style="border-left: 4px solid #dc3232;"><div class="update-message">' . sprintf( $message, $name, $min_version ) . '</div></td>';
			}
		}
	}

	/**
	 * Hooks into in_plugin_update_message-gravityforms/gravityforms.php and displays an update message specifically for Gravity Forms 2.3.
	 *
	 * @param $args
	 * @param $response
	 */
	public static function in_plugin_update_message( $args, $response ) {
		if ( empty( $args['update'] ) ) {
			return;
		}

		if ( version_compare( $args['new_version'], '2.3', '>=' ) && version_compare( GFForms::$version, '2.3', '<' ) ) {

			$message = esc_html__( 'IMPORTANT: As this is a major update, we strongly recommend creating a backup of your site before updating.', 'gravityforms' );

			require_once( GFCommon::get_base_path() . '/includes/system-status/class-gf-update.php' );

			$updates = GF_Update::available_updates();

			$addons_requiring_updates = array();

			foreach ( $updates as $update ) {
				if ( $update['slug'] == 'gravityforms' ) {
					continue;
				}
				$update_available = version_compare( $update['installed_version'], $update['latest_version'], '<' );
				if ( $update_available ) {
					$addons_requiring_updates[] = $update['name'] . ' ' . $update['installed_version'];
				}
			}

			if ( count( $addons_requiring_updates ) > 0 ) {
				/* translators: %s: version number */
				$message .= '<br />' . sprintf( esc_html__( "The versions of the following add-ons you're running haven't been tested with Gravity Forms %s. Please update them or confirm compatibility before updating Gravity Forms, or you may experience issues:", 'gravityforms' ), $args['new_version'] );
				$message .= ' ' . join( ', ', $addons_requiring_updates );
			}

			echo sprintf( '<br /><br /><span style="display:inline-block;background-color: #d54e21; padding: 10px; color: #f9f9f9;">%s</span><br /><br />', $message );
		}

	}

	/**
	 * Displays current version details on Plugins page
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function display_changelog() {
		if ( $_REQUEST['plugin'] != 'gravityforms' ) {
			return;
		}

		$page_text = self::get_changelog();
		echo $page_text;

		exit;
	}

	/**
	 * Gets the changelog for the newest version
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return string $page_text The changelog. Error message if there's an issue.
	 */
	public static function get_changelog() {
		$key                = GFCommon::get_key();
		$body               = "key=$key";
		$options            = array( 'method' => 'POST', 'timeout' => 3, 'body' => $body );
		$options['headers'] = array(
			'Content-Type'   => 'application/x-www-form-urlencoded; charset=' . get_option( 'blog_charset' ),
			'Content-Length' => strlen( $body ),
			'User-Agent'     => 'WordPress/' . get_bloginfo( 'version' ),
			'Referer'        => get_bloginfo( 'url' )
		);

		$raw_response = GFCommon::post_to_manager( 'changelog.php', GFCommon::get_remote_request_params(), $options );

		if ( is_wp_error( $raw_response ) || 200 != $raw_response['response']['code'] ) {
			$page_text = sprintf( esc_html__( 'Oops!! Something went wrong. %sPlease try again or %scontact us%s.', 'gravityforms' ), '<br/>', "<a href='https://www.gravityforms.com/support/'>", '</a>' );
		} else {
			$page_text = $raw_response['body'];
			if ( substr( $page_text, 0, 10 ) != '<!--GFM-->' ) {
				$page_text = '';
			} else {
				$page_text = '<div style="background-color:white">' . $page_text . '<div>';
			}
		}

		return stripslashes( $page_text );
	}

	//------------------------------------------------------
	//-------------- DASHBOARD PAGE -------------------------

	/**
	 * Registers the dashboard widget.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function dashboard_setup() {
		/**
		 * Changes the dashboard widget title
		 *
		 * @param string $dashboard_title The dashboard widget title.
		 */
		$dashboard_title = apply_filters( 'gform_dashboard_title', __( 'Forms', 'gravityforms' ) );
		wp_add_dashboard_widget( 'rg_forms_dashboard', $dashboard_title, array( 'GFForms', 'dashboard' ) );
	}

	/**
	 * Displays the dashboard UI.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function dashboard() {
		$forms = RGFormsModel::get_form_summary();

		if ( sizeof( $forms ) > 0 ) {
			?>
			<table class="widefat gf_dashboard_view" cellspacing="0" style="border:0px;">
				<thead>
				<tr>
					<td class="gf_dashboard_form_title_header" style="text-align:left; padding:8px 18px!important; font-weight:bold;">
						<i><?php esc_html_e( 'Title', 'gravityforms' ) ?></i></td>
					<td class="gf_dashboard_entries_unread_header" style="text-align:center; padding:8px 18px!important; font-weight:bold;">
						<i><?php esc_html_e( 'Unread', 'gravityforms' ) ?></i></td>
					<td class="gf_dashboard_entries_total_header" style="text-align:center; padding:8px 18px!important; font-weight:bold;">
						<i><?php esc_html_e( 'Total', 'gravityforms' ) ?></i></td>
				</tr>
				</thead>

				<tbody class="list:user user-list">
				<?php
				foreach ( $forms as $form ) {
					if ( $form['is_trash'] ) {
						continue;
					}

					$date_display = GFCommon::format_date( $form['last_entry_date'] );
					if ( ! empty( $form['total_entries'] ) ) {

						?>
						<tr class='author-self status-inherit' valign="top">
							<td class="gf_dashboard_form_title column-title" style="padding:8px 18px;">
								<a <?php echo $form['unread_count'] > 0 ? "class='form_title_unread' style='font-weight:bold;'" : '' ?> href="admin.php?page=gf_entries&view=entries&id=<?php echo absint( $form['id'] ) ?>"><?php echo esc_html( $form['title'] ) ?></a>
							</td>
							<td class="gf_dashboard_entries_unread column-date" style="padding:8px 18px; text-align:center;">
								<a <?php echo $form['unread_count'] > 0 ? "class='form_entries_unread' style='font-weight:bold;'" : '' ?> href="admin.php?page=gf_entries&view=entries&filter=unread&id=<?php echo absint( $form['id'] ) ?>" aria-label="<?php printf( esc_attr__( 'Last Entry: %s', 'gravityforms' ), $date_display ); ?>"><?php echo absint( $form['unread_count'] ) ?></a>
							</td>
							<td class="gf_dashboard_entries_total column-date" style="padding:8px 18px; text-align:center;">
								<a href="admin.php?page=gf_entries&view=entries&id=<?php echo absint( $form['id'] ) ?>" aria-label="<?php esc_attr_e( 'View All Entries', 'gravityforms' ) ?>"><?php echo absint( $form['total_entries'] ) ?></a>
							</td>
						</tr>
						<?php
					}
				}
				?>
				</tbody>
			</table>

			<?php if ( GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ) : ?>
				<p class="textright">
				<a class="gf_dashboard_button button" href="admin.php?page=gf_edit_forms"><?php esc_html_e( 'View All Forms', 'gravityforms' ) ?></a>
			<?php endif; ?>
			</p>
			<?php
		} else {
			?>
			<div class="gf_dashboard_noforms_notice">
				<?php echo sprintf( esc_html__( "You don't have any forms. Let's go %screate one %s!", 'gravityforms' ), '<a href="admin.php?page=gf_new_form">', '</a>' ); ?>
			</div>
			<?php
		}

		if ( GFCommon::current_user_can_any( 'gravityforms_view_updates' ) && ( ! function_exists( 'is_multisite' ) || ! is_multisite() || is_super_admin() ) ) {
			//displaying update message if there is an update and user has permission
			self::dashboard_update_message();
		}
	}

	/**
	 * Displays the update message on the dashboard.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function dashboard_update_message() {
		$version_info = GFCommon::get_version_info();

		//don't display a message if use has dismissed the message for this version
		$ary_dismissed = get_option( 'gf_dismissed_upgrades' );

		$is_dismissed = ! empty( $ary_dismissed ) && in_array( $version_info['version'], $ary_dismissed );

		if ( $is_dismissed ) {
			return;
		}

		if ( version_compare( GFCommon::$version, $version_info['version'], '<' ) ) {
			$message = sprintf( esc_html__( 'There is an update available for Gravity Forms. %sView Details%s', 'gravityforms' ), "<a href='admin.php?page=gf_system_status&subview=updates'>", '</a>' );
			?>
			<div class='updated' style='padding:15px; position:relative;' id='gf_dashboard_message'><?php echo $message ?>
				<a href="javascript:void(0);" onclick="GFDismissUpgrade();" onkeypress="GFDismissUpgrade();" style='float:right;'><?php esc_html_e( 'Dismiss', 'gravityforms' ) ?></a>
			</div>
			<script type="text/javascript">
				function GFDismissUpgrade() {
					jQuery("#gf_dashboard_message").slideUp();
					jQuery.post(ajaxurl, {
						action : 'rg_dismiss_upgrade',
						version: <?php echo json_encode( $version_info['version'] ); ?>});
				}
			</script>
			<?php
		}
	}

	/**
	 * Dismisses the dashboard update message.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function dashboard_dismiss_upgrade() {
		$ary = get_option( 'gf_dismissed_upgrades' );
		if ( ! is_array( $ary ) ) {
			$ary = array();
		}

		$ary[] = $_POST['version'];
		update_option( 'gf_dismissed_upgrades', $ary );
	}


	//------------------------------------------------------
	//--------------- ALL OTHER PAGES ----------------------

	/**
	 * Registers Gravity Forms scripts.
	 *
	 * If SCRIPT_DEBUG constant is set, uses the un-minified version.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function register_scripts() {

		$base_url = GFCommon::get_base_url();
		$version  = GFForms::$version;
		$min      = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG || isset( $_GET['gform_debug'] ) ? '' : '.min';

		wp_register_script( 'gform_chosen', $base_url . "/js/chosen.jquery.min.js", array( 'jquery' ), $version );
		wp_register_script( 'gform_conditional_logic', $base_url . "/js/conditional_logic{$min}.js", array(
			'jquery',
			'gform_gravityforms'
		), $version );
		wp_register_script( 'gform_datepicker_init', $base_url . "/js/datepicker{$min}.js", array(
			'jquery',
			'jquery-ui-datepicker',
			'gform_gravityforms'
		), $version, true );
		wp_register_script( 'gform_floatmenu', $base_url . "/js/floatmenu_init{$min}.js", array( 'jquery' ), $version );
		wp_register_script( 'gform_form_admin', $base_url . "/js/form_admin{$min}.js", array(
			'jquery',
			'jquery-ui-autocomplete',
			'gform_placeholder',
			'gform_gravityforms',
		), $version );
		wp_register_script( 'gform_form_editor', $base_url . "/js/form_editor{$min}.js", array(
			'jquery',
			'gform_json',
			'gform_placeholder'
		), $version, true );
		wp_register_script( 'gform_forms', $base_url . "/js/forms{$min}.js", array( 'jquery' ), $version );
		wp_register_script( 'gform_gravityforms', $base_url . "/js/gravityforms{$min}.js", array(
			'jquery',
			'gform_json'
		), $version );
		wp_register_script( 'gform_json', $base_url . "/js/jquery.json{$min}.js", array( 'jquery' ), $version, true );
		wp_register_script( 'gform_masked_input', $base_url . "/js/jquery.maskedinput{$min}.js", array( 'jquery' ), $version );
		wp_register_script( 'gform_menu', $base_url . "/js/menu{$min}.js", array( 'jquery' ), $version );
		wp_register_script( 'gform_placeholder', $base_url . '/js/placeholders.jquery.min.js', array( 'jquery' ), $version );
		wp_register_script( 'gform_tooltip_init', $base_url . "/js/tooltip_init{$min}.js", array( 'jquery-ui-tooltip' ), $version );
		wp_register_script( 'gform_textarea_counter', $base_url . "/js/jquery.textareaCounter.plugin{$min}.js", array( 'jquery' ), $version );
		wp_register_script( 'gform_field_filter', $base_url . "/js/gf_field_filter{$min}.js", array(
			'jquery',
			'gform_datepicker_init'
		), $version );
		wp_register_script( 'gform_shortcode_ui', $base_url . "/js/shortcode-ui{$min}.js", array(
			'jquery',
			'wp-backbone'
		), $version, true );
		wp_register_script( 'gform_system_report_clipboard', $base_url . '/includes/system-status/js/clipboard.min.js', array( 'jquery' ), $version, true );
		wp_register_script( 'gform_preview', $base_url . "/js/preview{$min}.js", array( 'jquery' ), $version, true );


		wp_register_style( 'gform_admin', $base_url . "/css/admin{$min}.css", array(), $version );
		wp_register_style( 'gform_chosen', $base_url . "/css/chosen{$min}.css", array(), $version );
		wp_register_style( 'gform_shortcode_ui', $base_url . "/css/shortcode-ui{$min}.css", array(), $version );
		wp_register_style( 'gform_font_awesome', $base_url . "/css/font-awesome{$min}.css", null, $version );
		wp_register_style( 'gform_tooltip', $base_url . "/css/tooltip{$min}.css", array( 'gform_font_awesome' ), $version );
		wp_register_style( 'gform_dashicons', $base_url . "/css/dashicons{$min}.css", array(), $version );

		wp_register_style( 'gforms_reset_css', $base_url . "/css/formreset{$min}.css", null, $version );
		wp_register_style( 'gforms_datepicker_css', $base_url . "/css/datepicker{$min}.css", null, $version );
		wp_register_style( 'gforms_formsmain_css', $base_url . "/css/formsmain{$min}.css", null, $version );
		wp_register_style( 'gforms_ready_class_css', $base_url . "/css/readyclass{$min}.css", null, $version );
		wp_register_style( 'gforms_browsers_css', $base_url . "/css/browsers{$min}.css", null, $version );
		wp_register_style( 'gforms_rtl_css', $base_url . "/css/rtl{$min}.css", null, $version );

	}

	/**
	 * Enqueues registered Gravity Forms scripts.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param null $hook Not used.
	 */
	public static function enqueue_admin_scripts( $hook ) {

		$scripts = array();
		$page    = self::get_page();

		switch ( $page ) {
			case 'new_form' :
			case 'form_list':
				$scripts = array(
					'gform_gravityforms',
					'gform_json',
					'gform_form_admin',
					'thickbox',
					'sack',
				);
				break;

			case 'form_settings':
				$scripts = array(
					'gform_gravityforms',
					'gform_forms',
					'gform_json',
					'gform_form_admin',
					'gform_placeholder',
					'jquery-ui-datepicker',
					'gform_masked_input',
					'jquery-ui-sortable',
					'sack',

				);
				break;

			case 'form_editor':
				$thickbox = 'thickbox';
				$scripts  = array(
					$thickbox,
					'jquery-ui-core',
					'jquery-ui-sortable',
					'jquery-ui-draggable',
					'jquery-ui-droppable',
					'jquery-ui-tabs',
					'gform_gravityforms',
					'gform_forms',
					'gform_json',
					'gform_form_admin',
					'gform_floatmenu',
					'gform_menu',
					'gform_placeholder',
					'jquery-ui-autocomplete',
					'sack',
				);

				if ( wp_is_mobile() ) {
					$scripts[] = 'jquery-touch-punch';
				}

				break;

			case 'entry_detail':
				$scripts = array(
					'gform_json',
					'sack',
					'postbox',
				);
				break;

			case 'entry_detail_edit':
				$scripts = array(
					'gform_gravityforms',
					'plupload-all',
					'sack',
					'postbox',
				);
				break;

			case 'entry_list':
				$scripts = array(
					'wp-lists',
					'wp-ajax-response',
					'thickbox',
					'gform_json',
					'gform_field_filter',
					'sack',
				);
				break;

			case 'notification_list':
				$scripts = array(
					'gform_forms',
					'gform_json',
					'gform_form_admin',
					'sack',
				);
				break;

			case 'notification_new':
			case 'notification_edit':
				$scripts = array(
					'jquery-ui-autocomplete',
					'gform_gravityforms',
					'gform_placeholder',
					'gform_form_admin',
					'gform_forms',
					'gform_json',
					'sack',
				);
				break;

			case 'confirmation':
				$scripts = array(
					'gform_form_admin',
					'gform_forms',
					'gform_gravityforms',
					'gform_placeholder',
					'gform_json',
					'wp-pointer',
					'sack',
				);
				break;

			case 'addons':
				$scripts = array(
					'thickbox',
					'sack',
				);
				break;

			case 'export_entry':
				$scripts = array(
					'jquery-ui-datepicker',
					'gform_form_admin',
					'gform_field_filter',
					'sack',
				);
				break;
			case 'updates' :
				$scripts = array(
					'thickbox',
					'sack',
				);
				break;
			case 'system_status':
				$scripts = array(
					'gform_system_report_clipboard',
					'thickbox',
					'gform_placeholder',
				);
				break;

		}

		if ( self::page_supports_add_form_button() ) {
			wp_enqueue_script( 'gform_shortcode_ui' );
			wp_enqueue_style( 'gform_shortcode_ui' );
			wp_localize_script( 'gform_shortcode_ui', 'gfShortcodeUIData', array(
				'shortcodes'      => self::get_shortcodes(),
				'previewNonce'    => wp_create_nonce( 'gf-shortcode-ui-preview' ),

				/**
				 * Allows the enabling (false) or disabling (true) of a shortcode preview of a form
				 *
				 * @param bool $preview_disabled Defaults to true.  False to enable.
				 */
				'previewDisabled' => apply_filters( 'gform_shortcode_preview_disabled', true ),
				'strings'         => array(
					'pleaseSelectAForm'   => esc_html__( 'Please select a form.', 'gravityforms' ),
					'errorLoadingPreview' => esc_html__( 'Failed to load the preview for this form.', 'gravityforms' ),
				)
			) );
		}

		if ( self::has_members_plugin( '2.0' ) && rgget( 'page' ) === 'roles' ) {
		    wp_enqueue_style( 'gform_dashicons' );
        }

		if ( empty( $scripts ) ) {
			return;
		}

		foreach ( $scripts as $script ) {
			wp_enqueue_script( $script );
		}


		GFCommon::localize_gform_gravityforms_multifile();

	}

	/**
	 * Gets current page name.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return bool|string Page name or false.
	 *   Page names:
	 *
	 *   new_form
	 *   form_list
	 *   form_editor
	 *   form_settings
	 *   confirmation
	 *   notification_list
	 *   notification_new
	 *   notification_edit
	 *   entry_list
	 *   entry_detail
	 *   entry_detail_edit
	 *   settings
	 *   addons
	 *   export_entry
	 *   export_form
	 *   import_form
	 *   updates
	 */
	public static function get_page() {

		if ( rgget( 'page' ) == 'gf_new_form' ) {
			return 'new_form';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && ! rgget( 'id' ) ) {
			return 'form_list';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && ! rgget( 'view' ) ) {
			return 'form_editor';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && rgget( 'view' ) == 'settings' && ( ! rgget( 'subview' ) || rgget( 'subview' ) == 'settings' ) ) {
			return 'form_settings';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && rgget( 'view' ) == 'settings' && rgget( 'subview' ) == 'confirmation' ) {
			return 'confirmation';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && rgget( 'view' ) == 'settings' && rgget( 'subview' ) == 'notification' && rgget( 'nid' ) ) {
			return 'notification_edit';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && rgget( 'view' ) == 'settings' && rgget( 'subview' ) == 'notification' && isset( $_GET['nid'] ) ) {
			return 'notification_edit';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && rgget( 'view' ) == 'settings' && rgget( 'subview' ) == 'notification' ) {
			return 'notification_list';
		}

		if ( rgget( 'page' ) == 'gf_edit_forms' && rgget( 'view' ) == 'settings' && rgget( 'subview' ) ) {
			return 'form_settings_' . rgget( 'subview' );
		}

		if ( rgget( 'page' ) == 'gf_entries' && ( ! rgget( 'view' ) || rgget( 'view' ) == 'entries' ) ) {
			return 'entry_list';
		}

		if ( rgget( 'page' ) == 'gf_entries' && rgget( 'view' ) == 'entry' && isset( $_POST['screen_mode'] ) && $_POST['screen_mode'] == 'edit' ) {
			return 'entry_detail_edit';
		}

		if ( rgget( 'page' ) == 'gf_entries' && rgget( 'view' ) == 'entry' ) {
			return 'entry_detail';
		}

		if ( rgget( 'page' ) == 'gf_settings' ) {
			return 'settings';
		}

		if ( rgget( 'page' ) == 'gf_addons' ) {
			return 'addons';
		}

		if ( rgget( 'page' ) == 'gf_export' && ( rgget( 'view' ) == 'export_entry' || ! isset( $_GET['view'] ) ) ) {
			return 'export_entry';
		}

		if ( rgget( 'page' ) == 'gf_export' && rgget( 'view' ) == 'export_form' ) {
			return 'export_form';
		}

		if ( rgget( 'page' ) == 'gf_export' && rgget( 'view' ) == 'import_form' ) {
			return 'import_form';
		}

		if ( rgget( 'page' ) == 'gf_system_status' ) {
			return rgget( 'subview' ) === 'updates' ? 'updates' : 'system_status';
		}

		if ( defined( 'DOING_AJAX' ) && DOING_AJAX && ( ( isset( $_POST['form_id'] ) && rgpost( 'action' ) === 'rg_select_export_form' ) || ( isset( $_POST['export_form'] ) && rgpost( 'action' ) === 'gf_process_export' ) ) ) {
			return 'export_entry_ajax';
		}

		return false;
	}

	/**
	 * Gets the form.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDisplay::get_form()
	 * @uses   GFCommon::get_base_path()
	 */
	public static function get_form( $form_id, $display_title = true, $display_description = true, $force_display = false, $field_values = null, $ajax = false, $tabindex = 0 ) {
		require_once( GFCommon::get_base_path() . '/form_display.php' );

		return GFFormDisplay::get_form( $form_id, $display_title, $display_description, $force_display, $field_values, $ajax, $tabindex );
	}

	/**
	 * Runs when the Forms menu item is clicked.
	 *
	 * Checks to see if the installation wizard should be displayed instead.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function new_form() {

		if ( self::maybe_display_wizard() ) {
			return;
		};

		self::form_list_page();
	}

	/**
	 * Enqueues scripts
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDisplay::enqueue_scripts()
	 */
	public static function enqueue_scripts() {
		require_once( GFCommon::get_base_path() . '/form_display.php' );
		GFFormDisplay::enqueue_scripts();
	}

	/**
	 * Prints form scripts.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDisplay::print_form_scripts()
	 */
	public static function print_form_scripts( $form, $ajax ) {
		require_once( GFCommon::get_base_path() . '/form_display.php' );
		GFFormDisplay::print_form_scripts( $form, $ajax );
	}

	/**
	 * Displays the Forms page
	 *
	 * Passes everything off to GFFormDetail::forms_page
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::forms_page()
	 */
	public static function forms_page( $form_id ) {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::forms_page( $form_id );
	}

	/**
	 * Runs the Gravity Forms settings page.
	 *
	 * Checks to see if the installation wizard should be displayed.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFSettings::settings_page()
	 */
	public static function settings_page() {

		if ( self::maybe_display_wizard() ) {
			return;
		};

		require_once( GFCommon::get_base_path() . '/settings.php' );
		GFSettings::settings_page();
	}

	/**
	 * Runs the Gravity Forms system status page.
	 *
	 * @since  2.2
	 * @access public
	 *
	 * @uses   GFSystemStatus::system_status_page()
	 */
	public static function system_status() {

		require_once( GFCommon::get_base_path() . '/includes/system-status/class-gf-system-status.php' );
		require_once( GFCommon::get_base_path() . '/includes/system-status/class-gf-system-report.php' );
		require_once( GFCommon::get_base_path() . '/includes/system-status/class-gf-update.php' );
		GF_System_Status::system_status_page();
	}

	/**
	 * Adds pages to the Gravity Forms Settings page
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFSettings::add_settings_page()
	 */
	public static function add_settings_page( $name, $handle = '', $icon_path = '' ) {
		require_once( GFCommon::get_base_path() . '/settings.php' );
		GFSettings::add_settings_page( $name, $handle, $icon_path );
	}

	/**
	 * Displays the help page
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFHelp::help_page()
	 */
	public static function help_page() {
		require_once( GFCommon::get_base_path() . '/help.php' );
		GFHelp::help_page();
	}

	/**
	 * Displays the Gravity Forms Export page
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFForms::maybe_display_wizard()
	 * @uses   GFExport::export_page()
	 */
	public static function export_page() {

		if ( self::maybe_display_wizard() ) {
			return;
		};

		require_once( GFCommon::get_base_path() . '/export.php' );
		GFExport::export_page();
	}

	/**
	 * Target for the wp_ajax_gf_process_export ajax action requested from the export entries page.
	 *
	 * @since  2.0.0
	 * @access public
	 *
	 * @uses   GFCommon::get_base_path()
	 * @uses   GFExport::ajax_process_export()
	 */
	public static function ajax_process_export() {

		require_once( GFCommon::get_base_path() . '/export.php' );
		GFExport::ajax_process_export();
	}

	/**
	 * Target for the wp_ajax_gf_download_export ajax action requested from the export entries page.
	 *
	 * @since  2.0.0
	 * @access public
	 *
	 * @uses   GFCommon::get_base_path()
	 * @uses   GFExport::ajax_download_export()
	 */
	public static function ajax_download_export() {

		require_once( GFCommon::get_base_path() . '/export.php' );
		GFExport::ajax_download_export();
	}

	/**
	 * Target for the wp_ajax_gf_dismiss_message ajax action requested from the Gravity Forms admin pages.
	 *
	 * @since  2.0.0
	 * @access public
	 *
	 * @uses   GFCommon::dismiss_message()
	 */
	public static function ajax_dismiss_message() {

		check_admin_referer( 'gf_dismissible_nonce', 'nonce' );

		$key = rgget( 'message_key' );
		$key = sanitize_key( $key );


		GFCommon::dismiss_message( $key );
	}

	/**
	 * Target for the wp_ajax_gf_disable_logging AJAX action requested from WordPress admin pages.
	 *
	 * @since  2.2.4.2
	 * @access public
	 *
	 * @uses   GFCommon::get_base_path()
	 * @uses   GFSettings::disable_logging()
	 */
	public static function ajax_disable_logging() {

		// Verify nonce.
		check_admin_referer( 'gf_disable_logging_nonce', 'nonce' );

		// Load Settings class.
		if ( ! class_exists( 'GFSettings' ) ) {
			require_once( GFCommon::get_base_path() . '/settings.php' );
		}

		// Disable logging.
		$disabled = GFSettings::disable_logging();

		if ( $disabled ) {
			wp_send_json_success( esc_html__( 'Logging disabled.', 'gravityforms' ) );
		} else {
			wp_send_json_error( esc_html__( 'Unable to disable logging.', 'gravityforms' ) );
		}

	}

	/**
	 * Target for the wp_ajax_gf_force_upgrade ajax action requested from the System Status page.
	 *
	 * Outputs a JSON string with the status and then triggers the background upgrader usually handled byt the cron healthcheck.
	 *
	 * @since 2.3.0.4
	 */
	public static function ajax_force_upgrade() {

		check_ajax_referer( 'gf_force_upgrade', 'nonce' );

		$status_label = get_option( 'gform_upgrade_status' );

		if ( empty( $status_label ) ) {
			$status = 'complete';
			$status_label =  __( 'Finished', 'gravityforms' );
			$percent_complete = 100;
		} else {
			$status = 'in_progress';
			require_once( GFCommon::get_base_path() . '/includes/system-status/class-gf-system-report.php' );
			$percent_complete = GF_System_Report::get_upgrade_percent_complete();
		}

		$response = json_encode(
			array(
				'status' => $status,
				'status_label' => $status_label,
			    'percent' => (string) $percent_complete,
			)
		);

		echo $response;

		ob_end_flush();

		// Simuate the healthcheck cron.
		GFForms::$background_upgrader->handle_cron_healthcheck();

		// The healthcheck task will terminate anyway but exit just in case.
		exit;
	}

	/**
	 * Runs the add-ons page
	 *
	 * If the display wizard needs to be displayed, do that instead.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function addons_page() {

		if ( self::maybe_display_wizard() ) {
			return;
		};

		wp_print_styles( array( 'thickbox' ) );

		$plugins           = get_plugins();
		$installed_plugins = array();
		foreach ( $plugins as $key => $plugin ) {
			$is_active                            = is_plugin_active( $key );
			$installed_plugin                     = array(
				'plugin'    => $key,
				'name'      => $plugin['Name'],
				'is_active' => $is_active
			);
			$installed_plugin['activation_url']   = $is_active ? '' : wp_nonce_url( "plugins.php?action=activate&plugin={$key}", "activate-plugin_{$key}" );
			$installed_plugin['deactivation_url'] = ! $is_active ? '' : wp_nonce_url( "plugins.php?action=deactivate&plugin={$key}", "deactivate-plugin_{$key}" );

			$installed_plugins[] = $installed_plugin;
		}

		$nonces = self::get_addon_nonces();

		$body    = array(
			'plugins' => urlencode( serialize( $installed_plugins ) ),
			'nonces'  => urlencode( serialize( $nonces ) ),
			'key'     => GFCommon::get_key()
		);
		$options = array( 'body' => $body, 'headers' => array( 'Referer' => get_bloginfo( 'url' ) ), 'timeout' => 15 );

		$raw_response = GFCommon::post_to_manager( 'api.php', "op=plugin_browser&{$_SERVER['QUERY_STRING']}", $options );

		if ( is_wp_error( $raw_response ) || $raw_response['response']['code'] != 200 ) {
			echo "<div class='error' style='margin-top:50px; padding:20px;'>" . esc_html__( 'Add-On browser is currently unavailable. Please try again later.', 'gravityforms' ) . '</div>';
		} else {
			echo GFCommon::get_remote_message();
			echo $raw_response['body'];
		}
	}

	/**
	 * Gets all add-on information.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $api    The API URL.
	 * @param string $action The action needed.  Determines the view.
	 * @param object $args   Additional arguments sent to the API
	 *
	 * @return bool|object API object if successful.  False if error.
	 */
	public static function get_addon_info( $api, $action, $args ) {

		if ( $action == 'plugin_information' && empty( $api ) && ( ! rgempty( 'rg', $_GET ) || $args->slug == 'gravityforms' ) ) {
			$key          = GFCommon::get_key();
			$raw_response = GFCommon::post_to_manager( 'api.php', "op=get_plugin&slug={$args->slug}&key={$key}", array() );

			if ( is_wp_error( $raw_response ) || $raw_response['response']['code'] != 200 ) {
				return false;
			}

			$plugin = unserialize( $raw_response['body'] );

			$api                = new stdClass();
			$api->name          = $plugin['title'];
			$api->version       = $plugin['version'];
			$api->download_link = $plugin['download_url'];
			$api->tested        = '10.0';

		}

		return $api;
	}

	/**
	 * Creates nonces for add-on installation pages.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return array|bool $nonces The nonces if the API response is fine.  Otherwise, false.
	 */
	public static function get_addon_nonces() {

		$raw_response = GFCommon::post_to_manager( 'api.php', 'op=get_plugins', array() );

		if ( is_wp_error( $raw_response ) || $raw_response['response']['code'] != 200 ) {
			return false;
		}

		$addons = unserialize( $raw_response['body'] );
		$nonces = array();
		foreach ( $addons as $addon ) {
			$nonces[ $addon['key'] ] = wp_create_nonce( "install-plugin_{$addon['key']}" );
		}

		return $nonces;
	}

	/**
	 * Begins exports.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFExport::start_export()
	 */
	public static function start_export() {
		require_once( GFCommon::get_base_path() . '/export.php' );
		GFExport::start_export();
	}

	/**
	 * Gets the post categories.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::get_post_category_values()
	 */
	public static function get_post_category_values() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::get_post_category_values();
	}

	/**
	 * Gets and displays the rules for an address field, depending on the address type.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function get_address_rule_values_select() {

		$address_type = rgpost( 'address_type' );
		$value        = rgpost( 'value' );
		$id           = sanitize_text_field( rgpost( 'id' ) );
		$form_id      = absint( rgpost( 'form_id' ) );

		$address_field = new GF_Field_Address();
		$address_types = $address_field->get_address_types( $form_id );
		$markup        = '';

		$type_obj = $address_type && isset( $address_types[ $address_type ] ) ? $address_types[ $address_type ] : 'international';

		switch ( $address_type ) {
			case 'international':
				$items = $address_field->get_countries();
				break;
			default:
				$items = $type_obj['states'];
		}

		$markup = sprintf( '<select id="%1$s" name="%1$s" class="gfield_rule_select gfield_rule_value_dropdown">%2$s</select>', esc_attr( $id ), $address_field->get_state_dropdown( $items, $value ) );

		echo $markup;

		die();

	}

	/**
	 * Gets post categories for display in Notifications.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFNotification::get_post_category_values()
	 */
	public static function get_notification_post_category_values() {
		require_once( GFCommon::get_base_path() . '/notification.php' );
		GFNotification::get_post_category_values();
	}

	/**
	 * Fires off the entries page.
	 *
	 * Checks if the installation wizard is needed.  If so, does that instead.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFForms::maybe_display_wizard()
	 * @uses   GFEntryDetail::lead_detail_page()
	 * @uses   GFEntryList::all_entries_page()
	 */
	public static function all_leads_page() {

		if ( self::maybe_display_wizard() ) {
			return;
		};

		$view    = rgget( 'view' );
		$lead_id = rgget( 'lid' );

		if ( $view == 'entry' && ( rgget( 'lid' ) || ! rgblank( rgget( 'pos' ) ) ) ) {
			require_once( GFCommon::get_base_path() . '/entry_detail.php' );
			GFEntryDetail::lead_detail_page();
		} else if ( $view == 'entries' || empty( $view ) ) {
			require_once( GFCommon::get_base_path() . '/entry_list.php' );
			GFEntryList::all_entries_page();
		} else {
			$form_id = rgget( 'id' );
			$form_id = absint( $form_id );
			/**
			 * Fires when viewing entries of a certain form
			 *
			 * @since Unknown
			 *
			 * @param string $view    The current view/entry type
			 * @param string $form_id The current form ID
			 * @param string $lead_id The current entry ID
			 */
			do_action( 'gform_entries_view', $view, $form_id, $lead_id );
		}

	}

	/**
	 * Gets the Form List page.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormList::form_list_page()
	 */
	public static function form_list_page() {
		require_once( GFCommon::get_base_path() . '/form_list.php' );
		GFFormList::form_list_page();
	}

	/**
	 * Handles the view when accessing specific forms
	 *
	 * If needed, displays the installation wizard instead.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFForms::maybe_display_wizard()
	 * @uses   GFCommon::ensure_wp_version()
	 * @uses   GFForms::get()
	 * @uses   GFEntryList::leads_page()
	 * @uses   GFEntryDetail::lead_detail_page()
	 * @uses   GFFormSettings::form_settings_page()
	 * @uses   GFForms::forms_page()
	 * @uses   GFForms::form_list_page()
	 */
	public static function forms() {
		if ( ! GFCommon::ensure_wp_version() ) {
			return;
		}

		if ( self::maybe_display_wizard() ) {
			return;
		};

		$id   = RGForms::get( 'id' );
		$view = RGForms::get( 'view' );

		if ( $view == 'entries' ) {
			require_once( GFCommon::get_base_path() . '/entry_list.php' );
			GFEntryList::leads_page( $id );
		} else if ( $view == 'entry' ) {
			require_once( GFCommon::get_base_path() . '/entry_detail.php' );
			GFEntryDetail::lead_detail_page();
		} else if ( $view == 'notification' ) {
			require_once( GFCommon::get_base_path() . '/notification.php' );
			//GFNotification::notification_page($id);
		} else if ( $view == 'settings' ) {
			require_once( GFCommon::get_base_path() . '/form_settings.php' );
			GFFormSettings::form_settings_page( $id );
		} else if ( empty( $view ) ) {
			if ( is_numeric( $id ) ) {
				self::forms_page( $id );
			} else {
				self::form_list_page();
			}
		}

		/**
		 * Fires an action based on the form view
		 *
		 * @since Unknown
		 *
		 * @param string $view The current view
		 * @param string $id   The form ID
		 */
		do_action( 'gform_view', $view, $id );

	}

	/**
	 * Obtains $_GET values or values from an array.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $name  The ID of a specific value.
	 * @param array  $array An optional array to search through.  Defaults to null.
	 *
	 * @return string The value.  Empty if not found.
	 */
	public static function get( $name, $array = null ) {
		if ( ! isset( $array ) ) {
			$array = $_GET;
		}

		if ( isset( $array[ $name ] ) ) {
			return $array[ $name ];
		}

		return '';
	}

	/**
	 * Obtains $_POST values.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $name            The ID of the value to obtain
	 * @param bool   $do_stripslashes If stripslashes_deep should be run on the result.  Defaults to true.
	 *
	 * @return string The value.  Empty if not found.
	 */
	public static function post( $name, $do_stripslashes = true ) {

		if ( isset( $_POST[ $name ] ) ) {
			return $do_stripslashes ? stripslashes_deep( $_POST[ $name ] ) : $_POST[ $name ];
		}

		return '';
	}

	/**
	 * Resends failed notifications
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFCommon::send_notification()
	 */
	public static function resend_notifications() {

		check_admin_referer( 'gf_resend_notifications', 'gf_resend_notifications' );
		$form_id = absint( rgpost( 'formId' ) );
		$leads   = rgpost( 'leadIds' ); // may be a single ID or an array of IDs
		if ( 0 == $leads ) {
			// get all the lead ids for the current filter / search
			$filter = rgpost( 'filter' );
			$search = rgpost( 'search' );
			$star   = $filter == 'star' ? 1 : null;
			$read   = $filter == 'unread' ? 0 : null;
			$status = in_array( $filter, array( 'trash', 'spam' ) ) ? $filter : 'active';

			$search_criteria['status'] = $status;

			if ( $star ) {
				$search_criteria['field_filters'][] = array( 'key' => 'is_starred', 'value' => (bool) $star );
			}
			if ( ! is_null( $read ) ) {
				$search_criteria['field_filters'][] = array( 'key' => 'is_read', 'value' => (bool) $read );
			}

			$search_field_id = rgpost( 'fieldId' );

			if ( isset( $_POST['fieldId'] ) && $_POST['fieldId'] !== '' ) {
				$key            = $search_field_id;
				$val            = $search;
				$strpos_row_key = strpos( $search_field_id, '|' );
				if ( $strpos_row_key !== false ) { //multi-row
					$key_array = explode( '|', $search_field_id );
					$key       = $key_array[0];
					$val       = $key_array[1] . ':' . $val;
				}
				$search_criteria['field_filters'][] = array(
					'key'      => $key,
					'operator' => rgempty( 'operator', $_POST ) ? 'is' : rgpost( 'operator' ),
					'value'    => $val,
				);
			}

			$leads = GFFormsModel::search_lead_ids( $form_id, $search_criteria );
		} else {
			$leads = ! is_array( $leads ) ? array( $leads ) : $leads;
		}

		/**
		 * Filters the notifications to be re-sent
		 *
		 * @since Unknown
		 *
		 * @param array $form_meta The Form Object
		 * @param array $leads     The entry IDs
		 */
		$form = gf_apply_filters( array(
			'gform_before_resend_notifications',
			$form_id
		), RGFormsModel::get_form_meta( $form_id ), $leads );

		if ( empty( $leads ) || empty( $form ) ) {
			esc_html_e( 'There was an error while resending the notifications.', 'gravityforms' );
			die();
		};

		$notifications = json_decode( rgpost( 'notifications' ) );
		if ( ! is_array( $notifications ) ) {
			die( esc_html__( 'No notifications have been selected. Please select a notification to be sent.', 'gravityforms' ) );
		}

		if ( ! rgempty( 'sendTo', $_POST ) && ! GFCommon::is_valid_email_list( rgpost( 'sendTo' ) ) ) {
			die( sprintf( esc_html__( 'The %sSend To%s email address provided is not valid.', 'gravityforms' ), '<strong>', '</strong>' ) );
		}

		foreach ( $leads as $lead_id ) {

			$lead = RGFormsModel::get_lead( $lead_id );
			foreach ( $notifications as $notification_id ) {
				$notification = $form['notifications'][ $notification_id ];
				if ( ! $notification ) {
					continue;
				}

				//overriding To email if one was specified
				if ( rgpost( 'sendTo' ) ) {
					$notification['to']     = rgpost( 'sendTo' );
					$notification['toType'] = 'email';
				}

				/**
				 * Allow the resend notification email to be skipped
				 *
				 * @since 2.3
				 *
				 * @param bool  $abort_email  Should we prevent this email being sent?
				 * @param array $notification The current notification object.
				 * @param array $form         The current form object.
				 * @param array $lead         The current entry object.
				 */
				$abort_email = apply_filters( 'gform_disable_resend_notification', false, $notification, $form, $lead );

				if ( ! $abort_email ) {
					GFCommon::send_notification( $notification, $form, $lead );
				}

				/**
				 * Fires after the current notification processing is finished
				 *
				 * @since 2.3
				 *
				 * @param array $notification The current notification object.
				 * @param array $form         The current form object.
				 * @param array $lead         The current entry object.
				 */
				do_action( 'gform_post_resend_notification', $notification, $form, $lead );
			}
		}

		/**
		 * Fires after the resend notifications processing is finished
		 *
		 * @since 2.3
		 *
		 * @param array $form The current form object.
		 * @param array $lead The current entry object.
		 */
		do_action( 'gform_post_resend_all_notifications', $form, $lead );

		die();
	}

	//-------------------------------------------------
	//----------- AJAX CALLS --------------------------

	/**
	 * Gets the CAPTCHA image for the form editor and displays it.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function captcha_image() {
		$field_properties = array(
			'type'                         => 'captcha',
			'simpleCaptchaSize'            => $_GET['size'],
			'simpleCaptchaFontColor'       => $_GET['fg'],
			'simpleCaptchaBackgroundColor' => $_GET['bg']
		);
		/* @var GF_Field_CAPTCHA $field */
		$field = GF_Fields::create( $field_properties );
		if ( $_GET['type'] == 'math' ) {
			$captcha = $field->get_math_captcha( $_GET['pos'] );
		} else {
			$captcha = $field->get_captcha();
		}

		@ini_set( 'memory_limit', '256M' );
		$image = imagecreatefrompng( $captcha['path'] );

		include_once( ABSPATH . 'wp-admin/includes/image-edit.php' );
		wp_stream_image( $image, 'image/png', 0 );
		imagedestroy( $image );
		die();
	}

	/**
	 * Updates the form status (active/inactive).
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormsModel::update_form_active()
	 */
	public static function update_form_active() {
		check_ajax_referer( 'rg_update_form_active', 'rg_update_form_active' );
		RGFormsModel::update_form_active( $_POST['form_id'], $_POST['is_active'] );
	}

	/**
	 * Updates the notification status (active/inactive).
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormsModel::update_notification_active()
	 */
	public static function update_notification_active() {
		check_ajax_referer( 'rg_update_notification_active', 'rg_update_notification_active' );
		RGFormsModel::update_notification_active( $_POST['form_id'], $_POST['notification_id'], $_POST['is_active'] );
	}

	/**
	 * Updates the confirmation status (active/inactive).
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @since  GFFormsModel::update_confirmation_active()
	 */
	public static function update_confirmation_active() {
		check_ajax_referer( 'rg_update_confirmation_active', 'rg_update_confirmation_active' );
		RGFormsModel::update_confirmation_active( $_POST['form_id'], $_POST['confirmation_id'], $_POST['is_active'] );
	}

	/**
	 * Updates the entry properties.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses GFFormsModel::update_entry_property()
	 */
	public static function update_lead_property() {
		check_ajax_referer( 'rg_update_lead_property', 'rg_update_lead_property' );
		GFFormsModel::update_entry_property( $_POST['lead_id'], $_POST['name'], $_POST['value'] );
	}

	/**
	 * Updates the entry status.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormsModel::update_lead_property()
	 * @uses   GFFormsModel::delete_lead()
	 */
	public static function update_lead_status() {
		check_ajax_referer( 'gf_delete_entry' );
		$status  = rgpost( 'status' );
		$lead_id = rgpost( 'entry' );

		$entry = GFAPI::get_entry( $lead_id );
		$form  = GFAPI::get_form( $entry['form_id'] );

		switch ( $status ) {
			case 'unspam':
				GFFormsModel::update_entry_property( $lead_id, 'status', 'active' );
				break;

			case 'restore':
				if ( GFCommon::current_user_can_any( 'gravityforms_delete_entries' ) ) {
					GFFormsModel::update_entry_property( $lead_id, 'status', 'active' );
				}
				break;

			case 'delete':
				if ( GFCommon::current_user_can_any( 'gravityforms_delete_entries' ) ) {
					GFFormsModel::delete_entry( $lead_id );
				}
				break;

			case 'trash':
				if ( GFCommon::current_user_can_any( 'gravityforms_delete_entries' ) ) {
					GFFormsModel::update_entry_property( $lead_id, 'status', 'trash' );
				}
				break;

			default :
				GFFormsModel::update_entry_property( $lead_id, 'status', $status );
				break;
		}
		require_once( 'entry_list.php' );


		$filter_links = GFEntryList::get_filter_links( $form );

		$counts = array();
		foreach ( $filter_links as $filter_link ) {
			$id                       = $filter_link['id'] == '' ? 'all' : $filter_link['id'];
			$counts[ $id . '_count' ] = $filter_link['count'];
		}

		$x = new WP_Ajax_Response();
		$x->add( array(
			'what'         => 'gf_entry',
			'id'           => $lead_id,
			'supplemental' => $counts,
		) );
		$x->send();
	}

	// Settings
	/**
	 * Runs the license upgrade.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFSettings::upgrade_license()
	 */
	public static function upgrade_license() {
		require_once( GFCommon::get_base_path() . '/settings.php' );
		GFSettings::upgrade_license();
	}

	// Form detail
	/**
	 * Saves the form in the form editor.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::save_form()
	 */
	public static function save_form() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::save_form();
	}

	/**
	 * Adds fields in the form editor.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::add_field()
	 */
	public static function add_field() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::add_field();
	}

	/**
	 * Duplicates fields in the form editor.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::duplicate_field()
	 */
	public static function duplicate_field() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::duplicate_field();
	}

	/**
	 * Deletes fields in the form editor.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   \GFFormDetail::delete_field()
	 */
	public static function delete_field() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::delete_field();
	}

	/**
	 * Changes the input type in the form editor.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::change_input_type()
	 */
	public static function change_input_type() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::change_input_type();
	}

	/**
	 * Refreshes the field preview.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   \GFFormDetail::refresh_field_preview
	 */
	public static function refresh_field_preview() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::refresh_field_preview();
	}

	/**
	 * Deletes custom choices from radio/checkbox/select/etc fields.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::delete_custom_choice()
	 */
	public static function delete_custom_choice() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::delete_custom_choice();
	}

	/**
	 * Saves custom choices from radio/checkbox/select/etc fields.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormDetail::save_custom_choice()
	 */
	public static function save_custom_choice() {
		require_once( GFCommon::get_base_path() . '/form_detail.php' );
		GFFormDetail::save_custom_choice();
	}

	/**
	 * Deletes a file from the entry detail view.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormsModel::delete_file()
	 */
	public static function delete_file() {
		check_ajax_referer( 'rg_delete_file', 'rg_delete_file' );
		$lead_id    = intval( $_POST['lead_id'] );
		$field_id   = intval( $_POST['field_id'] );
		$file_index = intval( $_POST['file_index'] );

		RGFormsModel::delete_file( $lead_id, $field_id, $file_index );
		die( "EndDeleteFile($field_id, $file_index);" );
	}

	/**
	 * Gets the form export data.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormsModel::get_form_meta()
	 */
	public static function select_export_form() {
		check_ajax_referer( 'rg_select_export_form', 'rg_select_export_form' );
		$form_id = intval( $_POST['form_id'] );
		$form    = RGFormsModel::get_form_meta( $form_id );

		/**
		 * Filters through the Form Export Page
		 *
		 * @since Unknown
		 *
		 * @param int $form The Form Object of the form to export
		 */
		$form = gf_apply_filters( array( 'gform_form_export_page', $form_id ), $form );

		$filter_settings      = GFCommon::get_field_filter_settings( $form );
		$filter_settings_json = json_encode( $filter_settings );
		$fields               = array();

		$form = GFExport::add_default_export_fields( $form );

		if ( is_array( $form['fields'] ) ) {
			/* @var GF_Field $field */
			foreach ( $form['fields'] as $field ) {
				$inputs = $field->get_entry_inputs();
				if ( is_array( $inputs ) ) {
					foreach ( $inputs as $input ) {
						$fields[] = array( $input['id'], GFCommon::get_label( $field, $input['id'] ) );
					}
				} else if ( ! $field->displayOnly ) {
					$fields[] = array( $field->id, GFCommon::get_label( $field ) );
				}
			}
		}
		$field_json = GFCommon::json_encode( $fields );

		die( "EndSelectExportForm($field_json, $filter_settings_json);" );
	}

	/**
	 * Saves a form confirmation.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormSettings::save_confirmation()
	 */
	//	public static function save_confirmation() {
	//		require_once( GFCommon::get_base_path() . '/form_settings.php' );
	//		GFFormSettings::save_confirmation();
	//	}

	/**
	 * Saves the form title.
	 *
	 * Called via AJAX.
	 *
	 * @since  2.0.2.5
	 * @access public
	 *
	 * @uses   GFFormSettings::save_form_title()
	 */
	public static function save_form_title() {
		require_once( GFCommon::get_base_path() . '/form_settings.php' );
		GFFormSettings::save_form_title();
	}

	/**
	 * Deletes a form confirmation.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormSettings::delete_confirmation()
	 */
	public static function delete_confirmation() {
		require_once( GFCommon::get_base_path() . '/form_settings.php' );
		GFFormSettings::delete_confirmation();
	}

	// Form list
	/**
	 * Saves a new form.
	 *
	 * Called via AJAX.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormList::save_new_form()
	 */
	public static function save_new_form() {
		require_once( GFCommon::get_base_path() . '/form_list.php' );
		GFFormList::save_new_form();
	}

	/**
	 * Used to check that background tasks are working.
	 *
	 * @since 2.3
	 */
	public static function check_background_tasks() {
		check_ajax_referer( 'gf_check_background_tasks', 'nonce' );
		echo 'ok';
		die();
	}

	/**
	 * Displays the edit title popup.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $form The Form Object.
	 */
	public static function edit_form_title( $form ) {

		//Only allow users with form edit permissions to edit forms
		if ( ! GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ) {
			return;
		}

		?>

		<div id="edit-title-container" class="add_field_button_container">
			<div class="button-title-link gf_button_title_active">
				<div id="edit-title-header">
					<?php esc_html_e( 'Form Title', 'gravityforms' ); ?>
					<span id="edit-title-close" onclick="GF_CloseEditTitle();"><i class="fa fa-times"></i></span>
				</div>
			</div>
			<div class="add-buttons">
				<input type="text" id='edit-title-input' value='<?php echo esc_attr( $form['title'] ); ?>' />

				<div class="edit-form-footer">
					<input type="button" value="<?php esc_html_e( 'Update', 'gravityforms' ); ?>" class="button-primary" onclick="GF_SaveTitle();" />
					<span id="gform_settings_page_title_error"></span>
				</div>
			</div>

		</div>

		<script type="text/javascript">
			function GF_ShowEditTitle() {
				jQuery('#edit-title-container').css('visibility', 'visible')
					.find('#edit-title-input').focus();
			}

			function GF_CloseEditTitle() {
				jQuery('#edit-title-container').css('visibility', 'hidden');

				jQuery('#edit-title-input').val( jQuery('#gform_settings_page_title').text() );
				jQuery('#gform_settings_page_title_error').text('');
			}

			function GF_SaveTitle(){

				var title = jQuery( '#edit-title-input' ).val();

				jQuery.post(ajaxurl, {
					action       : "gf_save_title",
					gf_save_title: '<?php echo wp_create_nonce( 'gf_save_title' ); ?>',
					title        : jQuery.toJSON(title),
					formId       : '<?php echo absint( $form['id'] ); ?>'
				})
					.done(function (data) {

						result = jQuery.parseJSON(data);
						var isValid = result && result.isValid;

						if ( !isValid ) {

							var errorMessage = result ? result.message : '<?php esc_attr_e( 'Oops! There was an error saving the form title. Please refresh the page and try again.', 'gravityforms' ); ?>' ;

							jQuery('#gform_settings_page_title_error').text(errorMessage);
						}
						else {
							var title = jQuery('#edit-title-input').val();
							jQuery('#gform_settings_page_title').text(title);
							jQuery('#form_title_input').val(title);
							<?php echo GFCommon::is_form_editor() ? 'form.title = title;' : ''; ?>

							GF_CloseEditTitle();
						}


					})
					.fail(function () {
						alert('<?php esc_attr_e( 'Oops! There was an error saving the form title. Please refresh the page and try again.', 'gravityforms' ); ?>');
						GF_CloseEditTitle();
					});

			}

			function GF_IsOutsideTitleWindow(element) {
				var parents = jQuery(element).parents('#edit-title-container');
				return parents.length == 0;
			}

			jQuery(document).mousedown(function (event) {
				if (GF_IsOutsideTitleWindow(event.target)) {
					GF_CloseEditTitle();
				}
			});

			jQuery(document).ready(function () {
				jQuery('#edit-title-input').keypress(function (event) {
					if (event.keyCode == 13) {
						GF_SaveTitle();
					}
				});
			});

		</script>

		<?php
	}

	/**
	 * Displays the form switcher dropdown.
	 *
	 * @since  Unknown
	 * @access public
	 */
	public static function form_switcher() {

		// Get all forms.
		$all_forms = RGFormsModel::get_forms( null, 'title' );

		// Sort forms by active state.
		$forms = array( 'active' => array(), 'inactive' => array(), );
		foreach ( $all_forms as $form ) {
			if ( '1' === $form->is_active ) {
				$forms['active'][] = $form;
			} else if ( '0' === $form->is_active ) {
				$forms['inactive'][] = $form;
			}
		}

		// Enqueuing Chosen script and styling.
		wp_enqueue_script( 'gform_chosen', false, array( 'jquery' ), GFCommon::$version, true );
		wp_enqueue_style( 'gform_chosen' );

		?>
		<a href="#" onclick="GF_SetupChosen( this ); event.stopPropagation();" id='form_switcher_arrow' class='form_switcher_arrow'><i class='fa fa-angle-down'></i></a>
		<div id="form_switcher_container">
			<select data-placeholder="<?php esc_attr_e( 'Switch Form', 'gravityforms' ) ?>" name="form_switcher" id="form_switcher" onchange="GF_SwitchForm(jQuery(this).val());">
				<option></option>
				<?php
				foreach ( $all_forms as $form_info ) {
					$title = $form_info->title;
					?>
					<option value="<?php echo absint( $form_info->id ); ?>"><?php echo esc_html( $title ) ?></option>
					<?php
				}
				?>
			</select>
		</div>

		<script type="text/javascript">
			function GF_ReplaceQuery(key, newValue) {
				var new_query = "";
				var query = document.location.search.substring(1);
				var ary = query.split("&");
				var has_key = false;
				for (i = 0; i < ary.length; i++) {
					var key_value = ary[i].split("=");

					if (key_value[0] == key) {
						new_query += key + "=" + newValue + "&";
						has_key = true;
					}
					else if (key_value[0] != "display_settings") {
						new_query += key_value[0] + "=" + key_value[1] + "&";
					}
				}

				if (new_query.length > 0)
					new_query = new_query.substring(0, new_query.length - 1);

				if (!has_key)
					new_query += new_query.length > 0 ? "&" + key + "=" + newValue : "?" + key + "=" + newValue;

				return new_query;
			}

			function GF_RemoveQuery(key, query) {
				var new_query = "";
				if (query == "") {
					query = document.location.search.substring(1);
				}
				var ary = query.split("&");
				for (i = 0; i < ary.length; i++) {
					var key_value = ary[i].split("=");

					if (key_value[0] != key) {
						new_query += key_value[0] + "=" + key_value[1] + "&";
					}
				}

				if (new_query.length > 0)
					new_query = new_query.substring(0, new_query.length - 1);

				return new_query;
			}

			function GF_SwitchForm(id) {

				if (id.length > 0) {
					id = parseInt(id);
					var query = GF_ReplaceQuery("id", id);
					//remove paging from querystring when changing forms
					var new_query = GF_RemoveQuery("paged", query);
					new_query = new_query.replace("gf_new_form", "gf_edit_forms");

					//remove filter vars from querystring when changing forms
					new_query = GF_RemoveQuery("s", new_query);
					new_query = GF_RemoveQuery("operator", new_query);
					new_query = GF_RemoveQuery("type", new_query);
					new_query = GF_RemoveQuery("field_id", new_query);
					new_query = GF_RemoveQuery("lid", new_query);
					new_query = GF_RemoveQuery("filter", new_query);
					new_query = GF_RemoveQuery("pos", new_query);

					//When switching forms within any form settings tab, go back to main form settings tab
					var is_form_settings = new_query.indexOf("page=gf_edit_forms") >= 0 && new_query.indexOf("view=settings") >= 0;
					if (is_form_settings) {
						//going back to main form settings tab
						new_query = "page=gf_edit_forms&view=settings&id=" + id;
					}

					//When switching forms within any form entries tab, go back to main form entries tab
					var is_form_entries = new_query.indexOf("page=gf_entries") >= 0;
					if (is_form_entries) {
						//going back to main form settings tab
						new_query = "page=gf_entries&id=" + id;
					}

					document.location = "?" + new_query;
				}
			}

			function ToggleFormSettings() {
				FieldClick(jQuery('#gform_heading')[0]);
			}

			function GF_PositionFormSwitcher() {

				var $container = jQuery('#form_switcher_container');
				var position = jQuery('#form_switcher_arrow').position().left,
					width = $container.outerWidth(),
					offset = width > position ? 0 : position - width + 20;

				$container.css('left', offset + 'px');
			}

			function GF_SetupChosen(elem) {

				//displaying container
				var $container = jQuery('#form_switcher_container');
				$container.show();

				//initializing and activating chosen
				var $ch = jQuery('#form_switcher').chosen();
				$ch.trigger('chosen:open');

				//setting form switcher position
				GF_PositionFormSwitcher();

				//binding to close event
				$ch.bind('chosen:hiding_dropdown', function (ch) {
					jQuery('#form_switcher_container').hide();
				});
			}

			jQuery(document).ready(function () {
				if (document.location.search.indexOf("display_settings") > 0)
					ToggleFormSettings()

				jQuery('a.gf_toolbar_disabled').click(function (event) {
					event.preventDefault();
				});
			});

			jQuery(window).resize(function () {
				GF_PositionFormSwitcher();
			});


		</script>
		<?php
	}

	/**
	 * Displays the top toolbar withing Gravity Forms pages.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @uses   GFFormsModel::get_forms()
	 * @uses   GFForms::get_toolbar_menu_items()
	 * @uses   GFForms::format_toolbar_menu_items()
	 */
	public static function top_toolbar() {

		$forms = RGFormsModel::get_forms( null, 'title' );
		$id    = rgempty( 'id', $_GET ) ? count( $forms ) > 0 ? $forms[0]->id : '0' : rgget( 'id' );
		?>
		<div id="gf_form_toolbar">
			<ul id="gf_form_toolbar_links">

				<?php
				$menu_items = apply_filters( 'gform_toolbar_menu', self::get_toolbar_menu_items( $id ), $id );
				echo self::format_toolbar_menu_items( $menu_items );
				?>
			</ul>
		</div>

		<?php

	}

	/**
	 * Formats the menu items for display in the Gravity Forms toolbar.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFForms::top_toolbar()
	 * @uses    GFForms::toolbar_sub_menu_items()
	 *
	 * @param array $menu_items Contains the menu items to be displayed
	 * @param bool  $compact    If true, uses the compact labels.  Defaults to false.
	 *
	 * @return string $output The formatted toolbar menu items
	 */
	public static function format_toolbar_menu_items( $menu_items, $compact = false ) {
		if ( empty( $menu_items ) ) {
			return '';
		}

		$output = '';

		$priorities = array();
		foreach ( $menu_items as $k => $menu_item ) {
			$priorities[ $k ] = rgar( $menu_item, 'priority' );
		}

		array_multisort( $priorities, SORT_DESC, $menu_items );

		$keys     = array_keys( $menu_items );
		$last_key = array_pop( $keys ); // array_pop(array_keys($menu_items)) causes a Strict Standards warning in WP 3.6 on PHP 5.4

		foreach ( $menu_items as $key => $menu_item ) {
			if ( is_array( $menu_item ) ) {
				if ( GFCommon::current_user_can_any( rgar( $menu_item, 'capabilities' ) ) ) {
					$sub_menu_str         = '';
					$count_sub_menu_items = 0;
					$sub_menu_items       = rgar( $menu_item, 'sub_menu_items' );
					if ( is_array( $sub_menu_items ) ) {
						foreach ( $sub_menu_items as $k => $val ) {
							if ( false === GFCommon::current_user_can_any( rgar( $sub_menu_items[ $k ], 'capabilities' ) ) ) {
								unset( $sub_menu_items[ $k ] );
							}
						}
						$sub_menu_items       = array_values( $sub_menu_items ); //reset numeric keys
						$count_sub_menu_items = count( $sub_menu_items );
					}

					$menu_class = rgar( $menu_item, 'menu_class' );

					if ( $count_sub_menu_items == 1 ) {
						$label     = $compact ? rgar( $menu_item, 'label' ) : rgar( $sub_menu_items[0], 'label' );
						$menu_item = $sub_menu_items[0];
					} else {
						$label        = rgar( $menu_item, 'label' );
						$sub_menu_str = self::toolbar_sub_menu_items( $sub_menu_items, $compact );
					}
					$link_class = esc_attr( rgar( $menu_item, 'link_class' ) );
					$icon       = rgar( $menu_item, 'icon' );
					$url        = esc_url( rgar( $menu_item, 'url' ) );
					$aria_label = rgar( $menu_item, 'aria-label' );
					$aria_label = ( ! empty( $aria_label ) ) ? "aria-label='" . esc_attr( $aria_label ) . "'" : '';
					$onclick    = esc_attr( rgar( $menu_item, 'onclick' ) );
					$label      = esc_html( $label );
					$target     = rgar( $menu_item, 'target' );

					$link = "<a class='{$link_class}' onclick='{$onclick}' onkeypress='{$onclick}' {$aria_label} href='{$url}' target='{$target}'>{$icon} {$label}</a>" . $sub_menu_str;
					if ( $compact ) {
						if ( $key == 'delete' ) {

							/**
							 * A filter to allow the modification of the HTML link to delete a form
							 *
							 * @since Unknown
							 *
							 * @param string $link The HTML "Delete Form" Link
							 */
							$link = apply_filters( 'gform_form_delete_link', $link );
						}
						$divider = $key == $last_key ? '' : ' | ';
						if ( $count_sub_menu_items > 0 ) {
							$menu_class .= ' gf_form_action_has_submenu';
						}
						$output .= '<span class="' . $menu_class . '">' . $link . $divider . '</span>';
					} else {

						$output .= "<li class='{$menu_class}'>{$link}</li>";
					}
				}
			} elseif ( $compact ) {
				//for backwards compatibility <1.7: form actions only
				$divider = $key == $last_key ? '' : ' | ';
				$output .= '<span class="edit">' . $menu_item . $divider . '</span>';
			}
		}

		return $output;
	}

	/**
	 * Gets the menu items to be displayed within the toolbar.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFForms::top_toolbar()
	 * @uses    GFForms::toolbar_class()
	 *
	 * @param string $form_id The form ID.
	 * @param bool   $compact True if the compact label should be used.  Defaults to false.
	 *
	 * @return array $menu_items The menu items to be displayed.
	 */
	public static function get_toolbar_menu_items( $form_id, $compact = false ) {
		$menu_items = array();

		$is_mobile = wp_is_mobile();

		$form_id = absint( $form_id );

		// ---- Form Editor ----
		$edit_capabilities = array( 'gravityforms_edit_forms' );

		$menu_items['edit'] = array(
			'label'        => __( 'Edit', 'gravityforms' ),
			'short_label'  => esc_html__( 'Editor', 'gravityforms' ),
			'icon'         => '<i class="fa fa-pencil-square-o fa-lg"></i>',
			'url'          => '?page=gf_edit_forms&id=' . $form_id,
			'menu_class'   => 'gf_form_toolbar_editor',
			'link_class'   => self::toolbar_class( 'editor' ),
			'capabilities' => $edit_capabilities,
			'priority'     => 1000,
		);

		// ---- Form Settings ----

		$sub_menu_items = self::get_form_settings_sub_menu_items( $form_id );

		$menu_items['settings'] = array(
			'label'          => __( 'Settings', 'gravityforms' ),
			'icon'           => '<i class="fa fa-cogs fa-lg"></i>',
			'aria-label'     => __( 'Edit settings for this form', 'gravityforms' ),
			'url'            => $is_mobile ? '#' : '?page=gf_edit_forms&view=settings&id=' . $form_id,
			'menu_class'     => 'gf_form_toolbar_settings',
			'link_class'     => self::toolbar_class( 'settings' ),
			'sub_menu_items' => $sub_menu_items,
			'capabilities'   => $edit_capabilities,
			'priority'       => 900,
		);


		// ---- Entries ----

		$entries_capabilities = array(
			'gravityforms_view_entries',
			'gravityforms_edit_entries',
			'gravityforms_delete_entries'
		);

		$menu_items['entries'] = array(
			'label'        => __( 'Entries', 'gravityforms' ),
			'icon'         => '<i class="fa fa-comment-o fa-lg"></i>',
			'aria-label'   => __( 'View entries generated by this form', 'gravityforms' ),
			'url'          => '?page=gf_entries&id=' . $form_id,
			'menu_class'   => 'gf_form_toolbar_entries',
			'link_class'   => self::toolbar_class( 'entries' ),
			'capabilities' => $entries_capabilities,
			'priority'     => 800,
		);

		// ---- Preview ----

		$preview_capabilities = array(
			'gravityforms_edit_forms',
			'gravityforms_create_form',
			'gravityforms_preview_forms'
		);

		$menu_items['preview'] = array(
			'label'        => __( 'Preview', 'gravityforms' ),
			'icon'         => '<i class="fa fa-eye fa-lg"></i>',
			'url'          => trailingslashit( site_url() ) . '?gf_page=preview&id=' . $form_id,
			'menu_class'   => 'gf_form_toolbar_preview',
			'link_class'   => self::toolbar_class( 'preview' ),
			'target'       => '_blank',
			'capabilities' => $preview_capabilities,
			'priority'     => 700,
		);

		/*
		// ---- Duplicate ----

		$duplicate_capabilities = array( 'gravityforms_edit_forms', 'gravityforms_create_form' );

		$menu_items['duplicate'] = array(
			'label'        => __( 'Duplicate', 'gravityforms' ),
			'icon'         => '<i class="fa fa-files-o fa-lg"></i>',
			'title'        => __( 'Duplicate this form', 'gravityforms' ),
			'url'		   => wp_nonce_url( "?page=gf_edit_forms&action=duplicate&arg={$form_id}", "gf_duplicate_form_{$form_id}" ),
			'menu_class'   => 'gf_form_toolbar_duplicate',
			'link_class'   => self::toolbar_class( 'duplicate' ),
			'capabilities' => $duplicate_capabilities,
			'priority'     => 600,
		);

		//---- Trash ----

		$trash_capabilities = array( 'gravityforms_delete_forms' );

		$menu_items['trash'] = array(
			'label'        => __( 'Trash', 'gravityforms' ),
			'icon'         => '<i class="fa fa-trash-o fa-lg"></i>',
			'title'        => __( 'Trash this form', 'gravityforms' ),
			'url'		   => wp_nonce_url( "?page=gf_edit_forms&action=trash&arg={$form_id}", "gf_delete_form_{$form_id}" ),
			'menu_class'   => 'gf_form_toolbar_trash',
			'link_class'   => self::toolbar_class( 'trash' ),
			'capabilities' => $trash_capabilities,
			'priority'     => 500,
		);
		*/

		return $menu_items;
	}

	/**
	 * Builds the sub-menu items within the Gravity Forms toolbar.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFForms::format_toolbar_menu_items()
	 *
	 * @param array $menu_items The menu items to be built
	 * @param bool  $compact    True if the compact label should be used.  False otherwise.
	 *
	 * @return string $sub_menu_items_string The menu item HTML
	 */
	public static function toolbar_sub_menu_items( $menu_items, $compact = false ) {
		if ( empty( $menu_items ) ) {
			return '';
		}

		$sub_menu_items_string = '';
		foreach ( $menu_items as $menu_item ) {
			if ( GFCommon::current_user_can_any( rgar( $menu_item, 'capabilities' ) ) ) {
				$menu_class = esc_attr( rgar( $menu_item, 'menu_class' ) );
				$link_class = esc_attr( rgar( $menu_item, 'link_class' ) );
				$url        = esc_url( rgar( $menu_item, 'url' ) );
				$label      = esc_html( rgar( $menu_item, 'label' ) );
				$target     = esc_attr( rgar( $menu_item, 'target' ) );
				$sub_menu_items_string .= "<li class='{$menu_class}'><a href='{$url}' class='{$link_class}' target='{$target}'>{$label}</a></li>";
			}
		}
		if ( $compact ) {
			$sub_menu_items_string = '<div class="gf_submenu"><ul>' . $sub_menu_items_string . '</ul></div>';
		} else {
			$sub_menu_items_string = '<div class="gf_submenu"><ul>' . $sub_menu_items_string . '</ul></div>';
		}

		return $sub_menu_items_string;
	}

	/**
	 * Gets the form settings sub-menu items.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFForms::get_toolbar_menu_items()
	 * @uses    GFFormSettings::get_tabs()
	 *
	 * @param string $form_id The form ID.
	 *
	 * @return array $sub_menu_items The sub-menu items.
	 */
	public static function get_form_settings_sub_menu_items( $form_id ) {
		require_once( GFCommon::get_base_path() . '/form_settings.php' );

		$sub_menu_items = array();
		$tabs           = GFFormSettings::get_tabs( $form_id );

		foreach ( $tabs as $tab ) {

			if ( $tab['name'] == 'settings' ) {
				$form_setting_menu_item['label'] = 'Settings';
			}

			$sub_menu_items[] = array(
				'url'          => admin_url( "admin.php?page=gf_edit_forms&view=settings&subview={$tab['name']}&id={$form_id}" ),
				'label'        => $tab['label'],
				'capabilities' => ( isset( $tab['capabilities'] ) ) ? $tab['capabilities'] : array( 'gravityforms_edit_forms' ),
			);

		}

		return $sub_menu_items;
	}

	/**
	 * Gets the CSS class to be used for the toolbar.
	 *
	 * @since   Unknown
	 * @access  private
	 *
	 * @used-by GFForms::get_toolbar_menu_items()
	 *
	 * @param string $item The Gravity Forms view (current page).
	 *
	 * @return string The class name.  Empty string if the view isn't found.
	 */
	private static function toolbar_class( $item ) {

		switch ( $item ) {

			case 'editor':
				if ( in_array( rgget( 'page' ), array(
						'gf_edit_forms',
						'gf_new_form'
					) ) && rgempty( 'view', $_GET )
				) {
					return 'gf_toolbar_active';
				}
				break;

			case 'settings':
				if ( rgget( 'view' ) == 'settings' ) {
					return 'gf_toolbar_active';
				}
				break;

			case 'notifications' :
				if ( rgget( 'page' ) == 'gf_new_form' ) {
					return 'gf_toolbar_disabled';
				} else if ( rgget( 'page' ) == 'gf_edit_forms' && rgget( 'view' ) == 'notification' ) {
					return 'gf_toolbar_active';
				}
				break;

			case 'entries' :
				if ( rgget( 'page' ) == 'gf_new_form' ) {
					return 'gf_toolbar_disabled';
				} else if ( rgget( 'page' ) == 'gf_entries' && rgempty( 'view', $_GET ) ) {
					return 'gf_toolbar_active';
				}

				break;

			case 'preview' :
				if ( rgget( 'page' ) == 'gf_new_form' ) {
					return 'gf_toolbar_disabled';
				}

				break;
		}

		return '';
	}

	/**
	 * Modifies the top WordPress toolbar to add Gravity Forms menu items.
	 *
	 * @since   Unknown
	 * @access  public
	 * @global $wp_admin_bar
	 *
	 * @used-by GFForms::init()
	 */
	public static function admin_bar() {
		/**
		 * @var  WP_Admin_Bar $wp_admin_bar
		 */
		global $wp_admin_bar;

		if ( GFCommon::current_user_can_any( 'gravityforms_create_form' ) ) {
			$wp_admin_bar->add_node(
				array(
					'id'     => 'gravityforms-new-form',
					'parent' => 'new-content',
					'title'  => esc_attr__( 'Form', 'gravityforms' ),
					'href'   => admin_url( 'admin.php?page="gf_new_form' ),
				)
			);
		}

		if ( ! get_option( 'gform_enable_toolbar_menu' ) ) {
			return;
		}

		if ( ! GFCommon::current_user_can_any( array(
			'gravityforms_edit_forms',
			'gravityforms_create_form',
			'gravityforms_preview_forms',
			'gravityforms_view_entries'
		) )
		) {
			// The current user can't use anything on the menu so bail.
			return;
		}

		$args = array(
			'id'    => 'gform-forms',
			'title' => '<div class="ab-item gforms-menu-icon svg" style="background-image: url(\'' . self::get_admin_icon_b64( '#888888' ) . '\');"></div><span class="ab-label">' . esc_html__( 'Forms', 'gravityforms' ) . '</span>',
			'href'  => admin_url( 'admin.php?page=gf_edit_forms' ),
		);

		$wp_admin_bar->add_node( $args );

		$recent_form_ids = GFFormsModel::get_recent_forms();

		if ( $recent_form_ids ) {
			$forms = GFFormsModel::get_form_meta_by_id( $recent_form_ids );

			$wp_admin_bar->add_node(
				array(
					'id'     => 'gform-form-recent-forms',
					'parent' => 'gform-forms',
					'title'  => esc_html__( 'Recent', 'gravityforms' ),
					'group'  => true,
				)
			);

			foreach ( $recent_form_ids as $recent_form_id ) {

				foreach ( $forms as $form ) {
					if ( $form['id'] == $recent_form_id ) {
						$wp_admin_bar->add_node(
							array(
								'id'     => 'gform-form-' . $recent_form_id,
								'parent' => 'gform-form-recent-forms',
								'title'  => $form['title'],
								'href'   => GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ? admin_url( 'admin.php?page=gf_edit_forms&id=' . $recent_form_id ) : '',
							)
						);

						if ( GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ) {
							$wp_admin_bar->add_node(
								array(
									'id'     => 'gform-form-' . $recent_form_id . '-edit',
									'parent' => 'gform-form-' . $recent_form_id,
									'title'  => esc_html__( 'Edit', 'gravityforms' ),
									'href'   => admin_url( 'admin.php?page=gf_edit_forms&id=' . $recent_form_id ),
								)
							);
						}

						if ( GFCommon::current_user_can_any( 'gravityforms_view_entries' ) ) {
							$wp_admin_bar->add_node(
								array(
									'id'     => 'gform-form-' . $recent_form_id . '-entries',
									'parent' => 'gform-form-' . $recent_form_id,
									'title'  => esc_html__( 'Entries', 'gravityforms' ),
									'href'   => admin_url( 'admin.php?page=gf_entries&id=' . $recent_form_id ),
								)
							);
						}

						if ( GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ) {
							$wp_admin_bar->add_node(
								array(
									'id'     => 'gform-form-' . $recent_form_id . '-settings',
									'parent' => 'gform-form-' . $recent_form_id,
									'title'  => esc_html__( 'Settings', 'gravityforms' ),
									'href'   => admin_url( 'admin.php?page=gf_edit_forms&view=settings&subview=settings&id=' . $recent_form_id ),
								)
							);
						}

						if ( GFCommon::current_user_can_any( array(
							'gravityforms_edit_forms',
							'gravityforms_create_form',
							'gravityforms_preview_forms'
						) )
						) {
							$wp_admin_bar->add_node(
								array(
									'id'     => 'gform-form-' . $recent_form_id . '-preview',
									'parent' => 'gform-form-' . $recent_form_id,
									'title'  => esc_html__( 'Preview', 'gravityforms' ),
									'href'   => trailingslashit( site_url() ) . '?gf_page=preview&id=' . $recent_form_id,
								)
							);
						}
					}
				}
			}
		}

		if ( GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ) {
			$wp_admin_bar->add_node(
				array(
					'id'     => 'gform-forms-view-all',
					'parent' => 'gform-forms',
					'title'  => esc_attr__( 'All Forms', 'gravityforms' ),
					'href'   => admin_url( 'admin.php?page=gf_edit_forms' ),
				)
			);
		}

		if ( GFCommon::current_user_can_any( 'gravityforms_create_form' ) ) {
			$wp_admin_bar->add_node(
				array(
					'id'     => 'gform-forms-new-form',
					'parent' => 'gform-forms',
					'title'  => esc_attr__( 'New Form', 'gravityforms' ),
					'href'   => admin_url( 'admin.php?page=gf_new_form' ),
				)
			);
		}

	}

	/**
	 * Determines if automatic updating should be processed.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by WP_Automatic_Updater::should_update()
	 * @uses    GFForms::is_auto_update_disabled()
	 *
	 * @param bool   $update Whether or not to update.
	 * @param object $item   The update offer object.
	 *
	 * @return bool True if update should be processed.  False otherwise.
	 */
	public static function maybe_auto_update( $update, $item ) {

		if ( isset( $item->slug ) && $item->slug == 'gravityforms' ) {

			GFCommon::log_debug( 'GFForms::maybe_auto_update() - Starting auto-update for gravityforms.' );

			$auto_update_disabled = self::is_auto_update_disabled();
			GFCommon::log_debug( 'GFForms::maybe_auto_update() - $auto_update_disabled: ' . var_export( $auto_update_disabled, true ) );

			if ( $auto_update_disabled || version_compare( GFForms::$version, $item->new_version, '=>' ) ) {
				GFCommon::log_debug( 'GFForms::maybe_auto_update() - Aborting update.' );

				return false;
			}

			$current_major = implode( '.', array_slice( preg_split( '/[.-]/', GFForms::$version ), 0, 1 ) );
			$new_major     = implode( '.', array_slice( preg_split( '/[.-]/', $item->new_version ), 0, 1 ) );

			$current_branch = implode( '.', array_slice( preg_split( '/[.-]/', GFForms::$version ), 0, 2 ) );
			$new_branch     = implode( '.', array_slice( preg_split( '/[.-]/', $item->new_version ), 0, 2 ) );

			if ( $current_major == $new_major && $current_branch == $new_branch ) {
				GFCommon::log_debug( __METHOD__ . '() - OK to update.' );

				return true;
			} else {
				GFCommon::log_debug( __METHOD__ . '() - Aborting update. Not on the same major version.' );

				return false;
			}
		}

		return $update;
	}

	/**
	 * Checks if automatic updates are disabled.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFForms::maybe_auto_update()
	 * @used    DISALLOW_FILE_MODS
	 * @used    WP_INSTALLING
	 * @used    AUTOMATIC_UPDATER_DISABLED
	 * @used    GFORM_DISABLE_AUTO_UPDATE
	 *
	 * @return bool True if auto update is disabled.  False otherwise.
	 */
	public static function is_auto_update_disabled() {

		// Currently WordPress won't ask Gravity Forms to update if background updates are disabled.
		// Let's double check anyway.

		// WordPress background updates are disabled if you don't want file changes.
		if ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS ) {
			return true;
		}

		if ( defined( 'WP_INSTALLING' ) ) {
			return true;
		}

		$wp_updates_disabled = defined( 'AUTOMATIC_UPDATER_DISABLED' ) && AUTOMATIC_UPDATER_DISABLED;

		/**
		 * Overrides the WordPress AUTOMATIC_UPDATER_DISABLED constant.
		 *
		 * @since Unknown
		 *
		 * @param bool $wp_updates_disabled True if disables.  False otherwise.
		 */
		$wp_updates_disabled = apply_filters( 'automatic_updater_disabled', $wp_updates_disabled );

		if ( $wp_updates_disabled ) {
			GFCommon::log_debug( __METHOD__ . '() - Background updates are disabled in WordPress.' );

			return true;
		}

		// Now check Gravity Forms Background Update Settings

		$enabled = get_option( 'gform_enable_background_updates' );
		GFCommon::log_debug( 'GFForms::is_auto_update_disabled() - $enabled: ' . var_export( $enabled, true ) );

		/**
		 * Filter to disable Gravity Forms Automatic updates
		 *
		 * @param bool $enabled Check if automatic updates are enabled, and then disable it
		 */
		$disabled = apply_filters( 'gform_disable_auto_update', ! $enabled );
		GFCommon::log_debug( 'GFForms::is_auto_update_disabled() - $disabled: ' . var_export( $disabled, true ) );

		if ( ! $disabled ) {
			$disabled = defined( 'GFORM_DISABLE_AUTO_UPDATE' ) && GFORM_DISABLE_AUTO_UPDATE;
			GFCommon::log_debug( 'GFForms::is_auto_update_disabled() - GFORM_DISABLE_AUTO_UPDATE: ' . var_export( $disabled, true ) );
		}

		return $disabled;
	}

	public static function deprecate_add_on_methods() {
		if ( ( defined( 'DOING_AJAX' ) && DOING_AJAX ) || ( defined( 'DOING_CRON' ) && DOING_CRON ) || ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) ) {
			return;
		}
		$deprecated = GFAddOn::get_all_deprecated_protected_methods();
		if ( ! empty( $deprecated ) ) {
			foreach ( $deprecated as $method ) {
				_deprecated_function( $method, '1.9', 'public access level' );
			}
		}
	}

	/**
	 * Shortcode UI
	 */

	/**
	 * Output a shortcode.
	 *
	 * Called via AJAX.
	 * Used for displaying the shortcode in the TinyMCE editor.
	 *
	 * @since  Unknown
	 * @access public
	 * @global $post
	 */
	public static function handle_ajax_do_shortcode() {

		$shortcode = ! empty( $_POST['shortcode'] ) ? sanitize_text_field( stripslashes( $_POST['shortcode'] ) ) : null;
		$post_id   = ! empty( $_POST['post_id'] ) ? intval( $_POST['post_id'] ) : null;

		if ( ! current_user_can( 'edit_post', $post_id ) || ! wp_verify_nonce( $_POST['nonce'], 'gf-shortcode-ui-preview' ) ) {
			echo esc_html__( 'Error', 'gravityforms' );
			exit;
		}

		$form_id = ! empty( $_POST['form_id'] ) ? intval( $_POST['form_id'] ) : null;

		global $post;
		$post = get_post( $post_id );
		setup_postdata( $post );

		self::enqueue_form_scripts( $form_id, true );
		wp_print_scripts();
		wp_print_styles();

		echo do_shortcode( $shortcode );

		// Disable the elements on the form
		?>
		<script type="text/javascript">
			jQuery('.gform_wrapper input, .gform_wrapper select, .gform_wrapper textarea').prop('disabled', true);
			jQuery('a img').each(function () {
				var image = this.src;
				var img = jQuery('<img>', {src: image});
				$(this).parent().replaceWith(img);
			});
			jQuery('a').each(function () {
				jQuery(this).replaceWith(jQuery(this).text());
			});
		</script>
		<?php
		exit;
	}

	/**
	 * Displays the shortcode editor.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFForms::init()
	 * @used    GFForms::get_view()
	 *
	 * @return void
	 */
	public static function action_print_media_templates() {

		echo GFForms::get_view( 'edit-shortcode-form' );
	}

	/**
	 * Gets the view and loads the appropriate template.
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by GFForms::action_print_media_templates()
	 *
	 * @param string $template The template to be loaded.
	 *
	 * @return mixed The contents of the template file.
	 */
	public static function get_view( $template ) {

		if ( ! file_exists( $template ) ) {

			$template_dir = GFCommon::get_base_path() . '/includes/templates/';
			$template     = $template_dir . $template . '.tpl.php';

			if ( ! file_exists( $template ) ) {
				return '';
			}
		}

		ob_start();
		include $template;

		return ob_get_clean();
	}

	/**
	 * Modifies the TinyMCE editor styling.
	 *
	 * Called from the tiny_mce_before_init filter
	 *
	 * @since   Unknown
	 * @access  public
	 *
	 * @used-by Filter: tiny_mce_before_init
	 *
	 * @param array $init Init data passed from the tiny_mce_before_init filter.
	 *
	 * @return array $init Data after filtering.
	 */
	public static function modify_tiny_mce_4( $init ) {

		// Hack to fix compatibility issue with ACF PRO
		if ( ! isset( $init['content_css'] ) ) {
			return $init;
		}

		$base_url = GFCommon::get_base_url();

		$min = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG || isset( $_GET['gform_debug'] ) ? '' : '.min';

		$editor_styles = $base_url . "/css/shortcode-ui-editor-styles{$min}.css,";
		$form_styles   = $base_url . "/css/formsmain{$min}.css";

		if ( isset( $init['content_css'] ) ) {
			if ( empty( $init['content_css'] ) ) {
				$init['content_css'] = '';
			} elseif ( is_array( $init['content_css'] ) ) {
				$init['content_css'][] = $editor_styles;
				$init['content_css'][] = $form_styles;

				return $init;
			} else {
				$init['content_css'] = $init['content_css'] . ',';
			}
		}

		// Note: Using .= here can trigger a fatal error
		$init['content_css'] = $init['content_css'] . $editor_styles . $form_styles;

		return $init;
	}

	/**
	 * Gets the available shortcode attributes.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @return array $shortcodes Shortcode attributes.
	 */
	public static function get_shortcodes() {

		$forms             = RGFormsModel::get_forms( 1, 'title' );
		$forms_options[''] = __( 'Select a Form', 'gravityforms' );
		foreach ( $forms as $form ) {
			$forms_options[ absint( $form->id ) ] = $form->title;
		}

		$default_attrs = array(
			array(
				'label'       => __( 'Select a form below to add it to your post or page.', 'gravityforms' ),
				'tooltip'     => __( 'Select a form from the list to add it to your post or page.', 'gravityforms' ),
				'attr'        => 'id',
				'type'        => 'select',
				'section'     => 'required',
				'description' => __( "Can't find your form? Make sure it is active.", 'gravityforms' ),
				'options'     => $forms_options,
			),
			array(
				'label'   => __( 'Display form title', 'gravityforms' ),
				'attr'    => 'title',
				'default' => 'true',
				'section' => 'standard',
				'type'    => 'checkbox',
				'tooltip' => __( 'Whether or not to display the form title.', 'gravityforms' )
			),
			array(
				'label'   => __( 'Display form description', 'gravityforms' ),
				'attr'    => 'description',
				'default' => 'true',
				'section' => 'standard',
				'type'    => 'checkbox',
				'tooltip' => __( 'Whether or not to display the form description.', 'gravityforms' )
			),
			array(
				'label'   => __( 'Enable Ajax', 'gravityforms' ),
				'attr'    => 'ajax',
				'section' => 'standard',
				'type'    => 'checkbox',
				'tooltip' => __( 'Specify whether or not to use Ajax to submit the form.', 'gravityforms' )
			),
			array(
				'label'   => 'Tabindex',
				'attr'    => 'tabindex',
				'type'    => 'number',
				'tooltip' => __( 'Specify the starting tab index for the fields of this form.', 'gravityforms' )
			),

		);

		/**
		 * Filters through the shortcode builder actions (ajax, tabindex, form title) for adding a new form to a post, page, etc.
		 *
		 * @since Unknown
		 *
		 * @param array() Array of additional shortcode builder actions.  Empty by default.
		 */
		$add_on_actions = apply_filters( 'gform_shortcode_builder_actions', array() );

		if ( ! empty( $add_on_actions ) ) {
			$action_options = array( '' => __( 'Select an action', 'gravityforms' ) );
			foreach ( $add_on_actions as $add_on_action ) {
				foreach ( $add_on_action as $key => $array ) {
					$action_options[ $key ] = $array['label'];
				}
			}

			$default_attrs[] = array(
				'label'   => 'Action',
				'attr'    => 'action',
				'type'    => 'select',
				'options' => $action_options,
				'tooltip' => __( 'Select an action for this shortcode. Actions are added by some add-ons.', 'gravityforms' )
			);
		}

		$shortcode = array(
			'shortcode_tag' => 'gravityform',
			'action_tag'    => '',
			'label'         => 'Gravity Forms',
			'attrs'         => $default_attrs,
		);

		$shortcodes[] = $shortcode;

		if ( ! empty( $add_on_actions ) ) {
			foreach ( $add_on_actions as $add_on_action ) {
				foreach ( $add_on_action as $key => $array ) {
					$attrs     = array_merge( $default_attrs, $array['attrs'] );
					$shortcode = array(
						'shortcode_tag' => 'gravityform',
						'action_tag'    => $key,
						'label'         => rgar( $array, 'label' ),
						'attrs'         => $attrs,
					);
				}
			}
			$shortcodes[] = $shortcode;
		}

		return $shortcodes;
	}

	/**
	 * Enqueues scripts needed to display the form.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @used   GFFormDisplay::enqueue_form_scripts()
	 * @used   GFAddOn::get_registered_addons()
	 *
	 * @param string $form_id The displayed form ID.
	 * @param bool   $is_ajax True if form uses AJAX.  False otherwise.
	 */
	public static function enqueue_form_scripts( $form_id, $is_ajax = false ) {
		require_once( GFCommon::get_base_path() . '/form_display.php' );
		$form = RGFormsModel::get_form_meta( $form_id );
		GFFormDisplay::enqueue_form_scripts( $form, $is_ajax );
		$addons = GFAddOn::get_registered_addons();
		foreach ( $addons as $addon ) {
			$a = call_user_func( array( $addon, 'get_instance' ) );
			$a->enqueue_scripts( $form, $is_ajax );
		}
	}

	/**
	 * Displays the installation wizard or upgrade wizard when appropriate.
	 *
	 * @since  2.2
	 * @access public
	 *
	 * @return bool Was a wizard displayed?
	 */
	public static function maybe_display_wizard() {

		return gf_upgrade()->maybe_display_wizard();
	}

	/**
	 * Display admin notice when logging is enabled.
	 *
	 * @since  2.4
	 * @access public
	 */
	public static function maybe_display_logging_notice() {

		$notice_disabled = defined( 'GF_LOGGING_DISABLE_NOTICE' ) && GF_LOGGING_DISABLE_NOTICE;
		$logging_enabled = get_option( 'gform_enable_logging', false ) || is_plugin_active( 'gravityformslogging/logging.php' );

		// If logging is disabled, return.
		if ( $notice_disabled || ! $logging_enabled || ! GFCommon::current_user_can_any( 'gravityforms_edit_settings' ) ) {
			return;
		}

		// Prepare message.
		$message = sprintf(
			'<p>%s</p><p><strong>%s</strong></p>',
			sprintf(
				esc_html__( "Gravity Forms logging is currently enabled. Log files can contain sensitive information so ensure that logging is only enabled for as long as is required for troubleshooting. %sClick here to disable logging.%s", 'gravityforms' ),
				'<a href="' . esc_url( admin_url( 'admin.php?page=gf_settings' ) ) . '">',
				'</a>'
			),
			esc_html__( "If you're currently receiving support, do not disable logging until the issue is resolved.", 'gravityforms' )
		);

		// Prepare script.
		$script = "<script type='text/javascript'>
			jQuery( document ).on( 'click', '#gform_disable_logging_notice a', function( e ) {
				e.preventDefault();
				var container = jQuery( '#gform_disable_logging_notice' );
				jQuery.ajax( {
					url: ajaxurl,
					dataType: 'json',
					data: {
						action: 'gf_disable_logging',
						nonce:  container.data( 'nonce' )
					},
					success: function( response ) {
						if ( response.success ) {
							container.removeClass( 'notice-error' ).addClass( 'notice-success' );
						}
						container.html( '<p>' + response.data + '</p>' );
					}
				} );             	
			} );
		</script>";

		printf( '<div class="notice notice-error" id="gform_disable_logging_notice" data-nonce="%s">%s</div>%s', wp_create_nonce( 'gf_disable_logging_nonce' ), $message, $script );

	}

	/**
	 * Sets the screen options for the entry list.
	 *
	 * @since   2.0
	 * @access  public
	 *
	 * @used-by Filter: set-screen-option
	 *
	 * @param bool|int $status Screen option value. Not used. Defaults to false.
	 * @param string   $option The option to check.
	 * @param int      $value  The number of rows to display per page.
	 *
	 * @return array $return The filtered data
	 */
	public static function set_screen_options( $status, $option, $value ) {
		$return = false;
		if ( $option == 'gform_entries_screen_options' ) {
			$return                   = array();
			$return['default_filter'] = sanitize_key( rgpost( 'gform_default_filter' ) );
			$return['per_page']       = sanitize_key( rgpost( 'gform_per_page' ) );
		} elseif ( $option = 'gform_forms_per_page' ) {
			$return = $value;
		}

		return $return;
	}

	/**
	 * Returns the markup for the screen options for the entry list.
	 *
	 * @since   2.0
	 * @access  public
	 *
	 * @used-by Filter: screen_settings
	 * @used    GFEntryList::get_screen_options_markup()
	 *
	 * @param string    $status The current screen settings
	 * @param WP_Screen $args   WP_Screen object
	 *
	 * @return string $return The filtered screen settings
	 */
	public static function show_screen_options( $status, $args ) {

		$return = $status;

		if ( self::get_page() == 'entry_list' ) {
			require_once( GFCommon::get_base_path() . '/entry_list.php' );
			$return = GFEntryList::get_screen_options_markup( $status, $args );
		}

		return $return;
	}

	/**
	 * Loads the screen options for the entry detail page.
	 *
	 * @since  2.0
	 * @access public
	 *
	 * @used   GFEntryDetail::add_meta_boxes()
	 */
	public static function load_screen_options() {
		$screen = get_current_screen();

		if ( ! is_object( $screen ) ) {
			return;
		}

		$page = GFForms::get_page();

		if ( $page == 'form_list' ) {
			$args = array(
				'label'   => __( 'Forms per page', 'gravityforms' ),
				'default' => 20,
				'option'  => 'gform_forms_per_page',
			);
			add_screen_option( 'per_page', $args );
		} elseif ( in_array( $page, array( 'entry_detail', 'entry_detail_edit' ) ) ) {

			require_once( GFCommon::get_base_path() . '/entry_detail.php' );

			GFEntryDetail::add_meta_boxes();
		}
	}

	/**
	 * Daily cron task. Target for the gravityforms_cron action.
	 *
	 * - Performs self-healing
	 * - Adds empty index files
	 * - Deletes unclaimed export files.
	 * - Deleted old log files.
	 * - Deletes orphaned entry rows from the lead table.
	 *
	 * @since   2.0.0
	 * @access  public
	 *
	 * @used-by Action: gravityforms_cron
	 * @used    GFForms::add_security_files()
	 * @used    GFForms::delete_old_export_files()
	 * @used    GFForms::delete_old_log_files()
	 * @used    GFForms::do_self_healing()
	 * @used    GFForms::delete_orphaned_entries()
	 */
	public static function cron() {

		GFCommon::log_debug( __METHOD__ . '(): Starting cron.' );

		self::add_security_files();

		self::delete_old_export_files();

		self::delete_old_log_files();

		self::do_self_healing();

		self::delete_orphaned_entries();

		if ( ! get_option( 'gform_enable_logging' ) ) {
			gf_logging()->delete_log_files();
		}

		require_once( 'includes/class-personal-data.php' );
		GF_Personal_Data::cron_task();

		GFCommon::log_debug( __METHOD__ . '(): Done.' );
	}

	/**
	 * Deletes all entry export files from the server that haven't been claimed within 24 hours.
	 *
	 * @since  2.0.0
	 * @access public
	 */
	public static function delete_old_export_files() {
		GFCommon::log_debug( __METHOD__ . '(): Starting.' );
		$uploads_folder = RGFormsModel::get_upload_root();
		if ( ! is_dir( $uploads_folder ) || is_link( $uploads_folder ) ) {
			GFCommon::log_debug( __METHOD__ . '(): No upload root - bailing.' );

			return;
		}
		$export_folder = $uploads_folder . 'export';
		if ( ! is_dir( $export_folder ) || is_link( $export_folder ) ) {
			GFCommon::log_debug( __METHOD__ . '():  No export root - bailing.' );

			return;
		}
		GFCommon::log_debug( __METHOD__ . '(): Start deleting old export files' );
		foreach ( glob( $export_folder . DIRECTORY_SEPARATOR . '*.csv' ) as $filename ) {
			$timestamp = filemtime( $filename );
			if ( $timestamp < time() - DAY_IN_SECONDS ) {
				// Delete files over a day old
				GFCommon::log_debug( __METHOD__ . '(): Proceeding to delete ' . $filename );
				$success = unlink( $filename );
				GFCommon::log_debug( __METHOD__ . '(): Delete successful: ' . ( $success ? 'yes' : 'no' ) );
			}
		}
	}

	/**
	 * Deletes any log files that are older than one month.
	 *
	 * @since  2.0.0
	 * @access public
	 */
	public static function delete_old_log_files() {
		GFCommon::log_debug( __METHOD__ . '(): Starting.' );
		$uploads_folder = RGFormsModel::get_upload_root();
		if ( ! is_dir( $uploads_folder ) || is_link( $uploads_folder ) ) {
			GFCommon::log_debug( __METHOD__ . '(): No upload root - bailing.' );

			return;
		}
		$logs_folder = $uploads_folder . 'logs';
		if ( ! is_dir( $logs_folder ) || is_link( $logs_folder ) ) {
			GFCommon::log_debug( __METHOD__ . '():  No logs folder - bailing.' );

			return;
		}
		GFCommon::log_debug( __METHOD__ . '(): Start deleting old log files' );
		foreach ( glob( $logs_folder . DIRECTORY_SEPARATOR . '*.txt' ) as $filename ) {
			$timestamp = filemtime( $filename );
			if ( $timestamp < time() - MONTH_IN_SECONDS ) {
				// Delete files over one month old
				GFCommon::log_debug( __METHOD__ . '(): Proceeding to delete ' . $filename );
				$success = unlink( $filename );
				GFCommon::log_debug( __METHOD__ . '(): Delete successful: ' . ( $success ? 'yes' : 'no' ) );
			}
		}
	}

	/**
	 * Deletes all rows in the lead table that don't have corresponding rows in the details table.
	 *
	 * @since  2.0.0
	 * @access public
	 * @global $wpdb
	 */
	public static function delete_orphaned_entries() {
		global $wpdb;

		if ( version_compare( GFFormsModel::get_database_version(), '2.3-beta-1', '<' ) ) {
			return;
		}

		GFCommon::log_debug( __METHOD__ . '(): Starting to delete orphaned entries' );
		$entry_table         = GFFormsModel::get_entry_table_name();
		$entry_meta_table = GFFormsModel::get_entry_meta_table_name();
		$sql                = "DELETE FROM {$entry_table} WHERE id NOT IN( SELECT entry_id FROM {$entry_meta_table} )";
		$result             = $wpdb->query( $sql );
		GFCommon::log_debug( __METHOD__ . '(): Delete result: ' . print_r( $result, true ) );
	}

	/**
	 * Hooked into the 'admin_head' action.
	 *
	 * Outputs the styles for the Forms Toolbar menu.
	 * Outputs gf vars if required.
	 *
	 * @since  2.0.1.2
	 * @access public
	 */
	public static function load_admin_bar_styles() {

		if ( ! get_option( 'gform_enable_toolbar_menu' ) ) {
			return;
		}

		if ( ! GFCommon::current_user_can_any( array(
			'gravityforms_edit_forms',
			'gravityforms_create_form',
			'gravityforms_preview_forms',
			'gravityforms_view_entries'
		) )
		) {
			// The current user can't use anything on the menu so bail.
			return;
		}

		?>
		<style>
			.gforms-menu-icon {
				float: left;
				width: 26px !important;
				height: 30px !important;
				background-repeat: no-repeat;
				background-position: 0 6px;
				background-size: 20px;
			}

			@media screen and ( max-width: 782px ) {
				#wpadminbar #wp-admin-bar-gform-forms .ab-item {
					line-height: 53px;
					height: 46px !important;
					width: 52px !important;
					display: block;
					background-size: 36px 36px;
					background-position: 7px 6px;
				}

				#wpadminbar li#wp-admin-bar-gform-forms {
					display: block;
				}

			}
		</style>
		<?php

	}

	/**
	 * Drops a table index.
	 *
	 * @access     public
	 * @global       $wpdb
	 *
	 * @param string $table The table that the index will be dropped from.
	 * @param string $index The index to be dropped.
	 *
	 * @return void
	 * @deprecated Use gf_upgrade()->drop_index() instead
	 */
	public static function drop_index( $table, $index ) {
		_deprecated_function( 'This function has been deprecated. Use gf_upgrade()->drop_index() instead', '2.2', 'gf_upgrade()->drop_index()' );

		gf_upgrade()->drop_index( $table, $index );

	}

	/**
	 * Fixes case for database queries.
	 *
	 * @deprecated 2.2
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array $cqueries Queries to be fixed.
	 *
	 * @return array $queries Queries after processing.
	 */
	public static function dbdelta_fix_case( $cqueries ) {
		_deprecated_function( 'dbdelta_fix_case', '2.2', 'gf_upgrade()->dbdelta_fix_case()' );

		return gf_upgrade()->dbdelta_fix_case( $cqueries );
	}

	public static function setup( $force_setup = false ) {

		_deprecated_function( 'This function has been deprecated. Use gf_upgrade()->maybe_upgrade() or gf_upgrade()->upgrade() instead', '2.2', 'gf_upgrade()->upgrade() or gf_upgrade()->maybe_upgrade()' );

		if ( $force_setup ) {
			$current_version = get_option( 'rg_form_version' );
			gf_upgrade()->upgrade( $current_version, true );
		} else {
			gf_upgrade()->maybe_upgrade();
		}
	}

	public static function setup_database() {
		_deprecated_function( 'This function has been deprecated. Use gf_upgrade()->upgrade_schema()', '2.2', 'gf_upgrade()->upgrade_schema()' );

		gf_upgrade()->upgrade_schema();
	}

	/**
	 * Creates an instance of GF_Background_Upgrader and stores it in GFForms::$background_upgrader
	 *
	 * @since 2.3
	 */
	public static function init_background_upgrader() {
		if ( empty( self::$background_upgrader ) ) {
			require_once( plugin_dir_path( __FILE__ ) . 'includes/class-gf-background-upgrader.php' );
			self::$background_upgrader = new GF_Background_Upgrader();
		}
	}

	/**
	 * Target for the WordPress 'query' filter. Triggers an PHP Notice if an outdated add-on or custom code attempts to
	 * access tables that are not valid for this version of Gravity Forms.
	 *
	 * @since 2.3
	 *
	 * @param $query
	 *
	 * @return string
	 */
	public static function filter_query( $query ) {
		global $wpdb;

		if ( preg_match( "/$wpdb->prefix(rg_lead_detail|rg_lead_meta|rg_lead_notes|rg_lead|rg_form_meta|rg_form_view|rg_form|rg_incomplete_submissions)/", $query, $matches ) ) {
			if ( version_compare( GFFormsModel::get_database_version(), '2.3-dev-1', '>' ) ) {
				$table_name = $matches[0];
				$url = 'https://docs.gravityforms.com/database-storage-structure-reference/#changes-from-gravity-forms-2-2';
				/* translators: 1: The table name 2: the URL with further details */
				$message = esc_html__( 'An outdated add-on or custom code is attempting to access the %1$s table which is not valid in this version of Gravity Forms. Update your add-ons and custom code to prevent loss of form data. Further details: %2$s', 'gravityforms' );
				$notice = sprintf( $message, $table_name, $url );
				trigger_error( $notice );
			}
		}
		return $query;
	}

	/**
	 * Target for the admin_notices action.
	 *
	 * @since 2.3
	 *
	 * Displays site-side dismissible notices.
	 */
	public static function action_admin_notices() {
		GFCommon::display_dismissible_message( false, 'site-wide' );
	}

	/**
	 * Registers the Gravity Forms data exporter.
	 *
	 * @since 2.4
	 *
	 * @param array $exporters
	 *
	 * @return array
	 */
	public static function register_data_exporter( $exporters ) {
		$exporters['gravityforms'] = array(
			'exporter_friendly_name' => __( 'Gravity Forms Exporter' ),
			'callback' => array( 'GFForms', 'data_exporter' ),
		);
		return $exporters;
	}

	/**
	 * Registers the Gravity Forms data eraser.
	 *
	 * @since 2.4
	 *
	 * @param array $erasers
	 *
	 * @return array
	 */
	public static function register_data_eraser( $erasers ) {
		$erasers['gravityforms'] = array(
			'eraser_friendly_name' => __( 'Gravity Forms Eraser' ),
			'callback' => array( 'GFForms', 'data_eraser' ),
		);
		return $erasers;
	}

	/**
	 * Callback for the WordPress data exporter.
	 *
	 * @since 2.4
	 *
	 * @param string $email_address
	 * @param int    $page
	 *
	 * @return array
	 */
	public static function data_exporter( $email_address, $page = 1 ) {

		require_once( 'includes/class-personal-data.php' );

		return GF_Personal_Data::data_exporter( $email_address, $page );
	}

	/**
	 * Callback for the WordPress data eraser.
	 *
	 * @since 2.4
	 *
	 * @param string $email_address
	 * @param int    $page
	 *
	 * @return array
	 */
	public static function data_eraser( $email_address, $page = 1 ) {

		require_once( 'includes/class-personal-data.php' );

		return GF_Personal_Data::data_eraser( $email_address, $page );
	}
}

/**
 * Class RGForms
 *
 * @deprecated
 * Exists only for backwards compatibility. Used GFForms instead.
 */
class RGForms extends GFForms {
}

/**
 * Main Gravity Forms function call.
 *
 * Should be used to insert a Gravity Form from code.
 *
 * @param string     $id                  The form ID
 * @param bool       $display_title       If the form title should be displayed in the form. Defaults to true.
 * @param bool       $display_description If the form description should be displayed in the form. Defaults to true.
 * @param bool       $display_inactive    If the form should be displayed if marked as inactive. Defaults to false.
 * @param array|null $field_values        Default field values. Defaults to null.
 * @param bool       $ajax                If submission should be processed via AJAX. Defaults to false.
 * @param int        $tabindex            Starting tabindex. Defaults to 1.
 * @param bool       $echo                If the field should be echoed.  Defaults to true.
 *
 * @return string|void
 */
function gravity_form( $id, $display_title = true, $display_description = true, $display_inactive = false, $field_values = null, $ajax = false, $tabindex = 1, $echo = true ) {
	if ( ! $echo ) {
		return GFForms::get_form( $id, $display_title, $display_description, $display_inactive, $field_values, $ajax, $tabindex );
	}

	echo GFForms::get_form( $id, $display_title, $display_description, $display_inactive, $field_values, $ajax, $tabindex );
}

/**
 * @return GF_Upgrade
 */
function gf_upgrade() {
	require_once( GFCommon::get_base_path() . '/includes/class-gf-upgrade.php' );

	return GF_Upgrade::get_instance();
}


/**
 * Enqueues form scripts for the specified form.
 *
 * @uses GFForms::enqueue_form_scripts()
 *
 * @param string $form_id The form ID.
 * @param bool   $is_ajax If the form is submitted via AJAX.  Defaults to false.
 */
function gravity_form_enqueue_scripts( $form_id, $is_ajax = false ) {
	GFForms::enqueue_form_scripts( $form_id, $is_ajax );
}

if ( ! function_exists( 'rgget' ) ) {
	/**
	 * Helper function for getting values from query strings or arrays
	 *
	 * @param string $name  The key
	 * @param array  $array The array to search through.  If null, checks query strings.  Defaults to null.
	 *
	 * @return string The value.  If none found, empty string.
	 */
	function rgget( $name, $array = null ) {
		if ( ! isset( $array ) ) {
			$array = $_GET;
		}

		if ( ! is_array( $array ) ) {
			return '';
		}

		if ( isset( $array[ $name ] ) ) {
			return $array[ $name ];
		}

		return '';
	}
}

if ( ! function_exists( 'rgpost' ) ) {
	/**
	 * Helper function to obtain POST values.
	 *
	 * @param string $name            The key
	 * @param bool   $do_stripslashes Optional. Performs stripslashes_deep.  Defaults to true.
	 *
	 * @return string The value.  If none found, empty string.
	 */
	function rgpost( $name, $do_stripslashes = true ) {
		if ( isset( $_POST[ $name ] ) ) {
			return $do_stripslashes ? stripslashes_deep( $_POST[ $name ] ) : $_POST[ $name ];
		}

		return '';
	}
}

if ( ! function_exists( 'rgar' ) ) {
	/**
	 * Get a specific property of an array without needing to check if that property exists.
	 *
	 * Provide a default value if you want to return a specific value if the property is not set.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array  $array   Array from which the property's value should be retrieved.
	 * @param string $prop    Name of the property to be retrieved.
	 * @param string $default Optional. Value that should be returned if the property is not set or empty. Defaults to null.
	 *
	 * @return null|string|mixed The value
	 */
	function rgar( $array, $prop, $default = null ) {

		if ( ! is_array( $array ) && ! ( is_object( $array ) && $array instanceof ArrayAccess ) ) {
			return $default;
		}

		if ( isset( $array[ $prop ] ) ) {
			$value = $array[ $prop ];
		} else {
			$value = '';
		}

		return empty( $value ) && $default !== null ? $default : $value;
	}
}

if ( ! function_exists( 'rgars' ) ) {
	/**
	 * Gets a specific property within a multidimensional array.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param array  $array   The array to search in.
	 * @param string $name    The name of the property to find.
	 * @param string $default Optional. Value that should be returned if the property is not set or empty. Defaults to null.
	 *
	 * @return null|string|mixed The value
	 */
	function rgars( $array, $name, $default = null ) {

		if ( ! is_array( $array ) && ! ( is_object( $array ) && $array instanceof ArrayAccess ) ) {
			return $default;
		}

		$names = explode( '/', $name );
		$val   = $array;
		foreach ( $names as $current_name ) {
			$val = rgar( $val, $current_name, $default );
		}

		return $val;
	}
}

if ( ! function_exists( 'rgempty' ) ) {
	/**
	 * Determines if a value is empty.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $name  The property name to check.
	 * @param array  $array Optional. An array to check through.  Otherwise, checks for POST variables.
	 *
	 * @return bool True if empty.  False otherwise.
	 */
	function rgempty( $name, $array = null ) {

		if ( is_array( $name ) ) {
			return empty( $name );
		}

		if ( ! $array ) {
			$array = $_POST;
		}

		$val = rgar( $array, $name );

		return empty( $val );
	}
}

if ( ! function_exists( 'rgblank' ) ) {
	/**
	 * Checks if the string is empty
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $text The string to check.
	 *
	 * @return bool True if empty.  False otherwise.
	 */
	function rgblank( $text ) {
		return empty( $text ) && ! is_array( $text ) && strval( $text ) != '0';
	}
}

if ( ! function_exists( 'rgobj' ) ) {
	/**
	 * Gets a property value from an object
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param object $obj  The object to check
	 * @param string $name The property name to check for
	 *
	 * @return string The property value
	 */
	function rgobj( $obj, $name ) {
		if ( isset( $obj->$name ) ) {
			return $obj->$name;
		}

		return '';
	}
}
if ( ! function_exists( 'rgexplode' ) ) {
	/**
	 * Converts a delimiter separated string to an array.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string $sep    The delimiter between values
	 * @param string $string The string to convert
	 * @param int    $count  The expected number of items in the resulting array
	 *
	 * @return array $ary The exploded array
	 */
	function rgexplode( $sep, $string, $count ) {
		$ary = explode( $sep, $string );
		while ( count( $ary ) < $count ) {
			$ary[] = '';
		}

		return $ary;
	}
}

if ( ! function_exists( 'gf_apply_filters' ) ) {
	//function gf_apply_filters( $filter, $modifiers, $value ) {
	/**
	 * Gravity Forms pre-processing for apply_filters
	 *
	 * Allows additional filters based on form and field ID to be defined easily.
	 *
	 * @since  Unknown
	 * @access public
	 *
	 * @param string|array $filter The name of the filter.
	 * @param mixed  $value  The value to filter.
	 *
	 * @return mixed The filtered value.
	 */
	function gf_apply_filters( $filter, $value ) {

		$args = func_get_args();

		if ( is_array( $filter ) ) {
			// func parameters are: $filter, $value
			$modifiers = array_splice( $filter, 1, count( $filter ) );
			$filter    = $filter[0];
			$args      = array_slice( $args, 2 );
		} else {
			//_deprecated_argument( 'gf_apply_filters', '1.9.14.20', "Modifiers should no longer be passed as a separate parameter. Combine the filter name and modifier(s) into an array and pass that array as the first parameter of the function. Example: gf_apply_filters( array( 'action_name', 'mod1', 'mod2' ), \$value, \$arg1, \$arg2 );" );
			// func parameters are: $filter, $modifier, $value
			$modifiers = ! is_array( $value ) ? array( $value ) : $value;
			$value     = $args[2];
			$args      = array_slice( $args, 3 );
		}

		// Add an empty modifier so the base filter will be applied as well
		array_unshift( $modifiers, '' );

		$args = array_pad( $args, 10, null );

		// Apply modified versions of filter
		foreach ( $modifiers as $modifier ) {
			$modifier = rgblank( $modifier ) ? '' : sprintf( '_%s', $modifier );
			$filter .= $modifier;
			$value = apply_filters( $filter, $value, $args[0], $args[1], $args[2], $args[3], $args[4], $args[5], $args[6], $args[7], $args[8], $args[9] );
		}

		return $value;
	}
}

if ( ! function_exists( 'gf_do_action' ) ) {
	/**
	 * Gravity Forms pre-processing for do_action.
	 *
	 * Allows additional actions based on form and field ID to be defined easily.
	 *
	 * @since  1.9.14.20 Modifiers should no longer be passed as a separate parameter.
	 * @since  1.9.12
	 * @access public
	 *
	 * @param string|array $action The action.
	 */
	function gf_do_action( $action ) {

		$args = func_get_args();

		if ( is_array( $action ) ) {
			// Func parameters are: $action, $value
			$modifiers = array_splice( $action, 1, count( $action ) );
			$action    = $action[0];
			$args      = array_slice( $args, 1 );
		} else {
			//_deprecated_argument( 'gf_do_action', '1.9.14.20', "Modifiers should no longer be passed as a separate parameter. Combine the action name and modifier(s) into an array and pass that array as the first parameter of the function. Example: gf_do_action( array( 'action_name', 'mod1', 'mod2' ), \$arg1, \$arg2 );" );
			// Func parameters are: $action, $modifier, $value
			$modifiers = ! is_array( $args[1] ) ? array( $args[1] ) : $args[1];
			$args      = array_slice( $args, 2 );
		}

		// Add an empty modifier so the base filter will be applied as well
		array_unshift( $modifiers, '' );

		$args = array_pad( $args, 10, null );

		// Apply modified versions of filter
		foreach ( $modifiers as $modifier ) {
			$modifier = rgblank( $modifier ) ? '' : sprintf( '_%s', $modifier );
			$action .= $modifier;
			do_action( $action, $args[0], $args[1], $args[2], $args[3], $args[4], $args[5], $args[6], $args[7], $args[8], $args[9] );
		}
	}
}