[WordPress] Control Activation of a WooCommerce Extension

00-extension-for-woocommerce.php

<?php

class Extension_For_WooCommerce {
  
	public function init() {

		add_action( 'admin_init', array( $this, 'start' ) );
		add_action( 'admin_init', array( $this, 'stop' ) );
	}
}

01-is-woocommerce-active.php

<?php

private function woocommerce_is_active() {
	return is_plugin_active( 'woocommerce/woocommerce.php' );
}

03-load-dependencies.php

<?php

public function start() {

	if ( ! $this->woocommerce_is_active() ) {
		return;
	}

	// Load dependencies.
}

04-stop-activation.php

<?php

public function stop() {

	if ( ! $this->woocommerce_is_active() ) {

		deactivate_plugins( plugin_basename( __FILE__ ) );
		unset( $_GET['activate'] ); // Input var okay.
	}
}