Example: Adding a custom third party integration

<?php

class FSQM_Add_Custom_Integration {
	/**
	 * Reference to IPT_FSQM_Form_Elements_Admin object
	 * This is stored during settings filter
	 */
	public $that;

	/**
	 * Constructor
	 * It essentially adds all the necessary filters
	 */
	public function __construct() {
		// Add the filters for admin settings
		add_filter( 'ipt_fsqm_filter_default_settings', array( $this, 'add_settings_variable' ), 10 );
		add_filter( 'ipt_fsqm_integration_settings_tabs', array( $this, 'add_settings_admin_ui' ), 10, 2 );

		// Add the hook for doing the integration
		add_action( 'ipt_fsqm_hook_integration', array( $this, 'fsqm_custom_integration' ), 10, 1 );
	}

	/**
	 * Add our custom variables to the default FSQM settings
	 *
	 * @param      array   $settings  Associative array of settings
	 *
	 * @return     array
	 */
	public function add_settings_variable( $settings ) {
		// Let us add some variables to the default settings
		// For this demo we would add an array with enabled, api and list_id
		$settings['integration']['custom'] = array(
			'enabled' => false,
			'api' => '',
			'list_id' => '',
		);

		return $settings;
	}

	/**
	 * Filter settings tab variable to add our own tab
	 *
	 * @param      array   $tab_settings  Associative array of tab variables
	 * @param      object  $context       Reference to the calling IPT_FSQM_Form_Elements_Admin variable
	 *
	 * @return     array
	 */
	public function add_settings_admin_ui( $tab_settings, $context ) {
		// First we add a new tab
		// to provide UI in order to manage our settings variables
		$tab_settings[] = array(
			'id' => 'ipt_fsqm_form_custom_intg', // HTML ID of the tab
			'label' => __( 'Custom Integration', 'domain' ), // Label of the tab
			'callback' => array( $this, 'settings_admin_ui_cb' ), // Callback function to populate TAB UI
		);

		// Store the reference to the object
		$this->that = $context;

		return $tab_settings;
	}

	public function settings_admin_ui_cb() {
		// Get the options
		$op = $this->that->settings['integration']['custom'];
		// Print the table
		?>
<table class="form-table">
	<tbody>
		<tr>
			<th><?php $this->that->ui->generate_label( 'settings[integration][custom][enabled]', __( 'Enable Custom Integration', 'domain' ) ); ?></th>
			<td>
				<?php $this->that->ui->toggle( 'settings[integration][custom][enabled]', __( 'Yes', 'domain' ), __( 'No', 'domain' ), $op['enabled'], '1', false, true, array(
					'condid' => 'ipt_fsqm_intg_custom_api_wrap,ipt_fsqm_intg_custom_list_id_wrap'
				) ); ?>
			</td>
			<td>
				<?php $this->that->ui->help( __( 'Some inline help', 'domain' ) ); ?>
			</td>
		</tr>
		<tr id="ipt_fsqm_intg_custom_api_wrap">
			<th><?php $this->that->ui->generate_label( 'settings[integration][custom][api]', __( 'API Key', 'domain' ) ); ?></th>
			<td>
				<?php $this->that->ui->text( 'settings[integration][custom][api]', $op['api'], __( 'API Key', 'domain' ) ); ?>
			</td>
			<td>
				<?php $this->that->ui->help( __( 'Get your API key from <a href="http://google.com">here</a>.', 'domain' ) ); ?>
			</td>
		</tr>
		<tr id="ipt_fsqm_intg_custom_list_id_wrap">
			<th><?php $this->that->ui->generate_label( 'settings[integration][custom][list_id]', __( 'List ID', 'domain' ) ); ?></th>
			<td>
				<?php $this->that->ui->text( 'settings[integration][custom][list_id]', $op['list_id'], __( 'List ID', 'domain' ) ); ?>
			</td>
			<td>
				<?php $this->that->ui->help( __( 'Get your List ID from <a href="http://google.com">here</a>.', 'domain' ) ); ?>
			</td>
		</tr>
	</tbody>
</table>
		<?php
	}


	/**
	 * Add into the integration execution hook
	 * To carry out our custom integration
	 *
	 * @param      object  $obj    A reference to the IPT_FSQM_Form_Elements_Data object
	 */
	public function fsqm_custom_integration( $obj ) {
		// Get our custom integration settings
		$settings = $obj->settings['integration']['custom'];

		// Do the integration if necessary
		if ( $settings['enabled'] == true && '' != $obj->data->email ) {
			// Set the name
			$name = '';
			$su_names = array();
			if ( $obj->data->f_name != '' ) {
				$su_names[] = $obj->data->f_name;
			}
			if ( $obj->data->l_name != '' ) {
				$su_names[] = $obj->data->l_name;
			}
			if ( ! empty( $su_names ) ) {
				$name = implode( ' ', $su_names );
			}
			// Set the email
			$email = $obj->data->email;

			// Set the referer
			$referer = wp_get_referer();

			// Now do something with the information
			wp_remote_post( 'http://google.com', array(
				'data' => array(
					'name' => $name,
					'email' => $email,
					'referer' => $referer,
				),
			) );
		}
	}
}

$mycustom_intg = new FSQM_Add_Custom_Integration();