/**
* Private constructor. Use `getInstance()` to obtain the singleton instance.
*/
private function __construct()
{
$this->configurableCurrencyProvider = new ConfigurableCurrencyProvider();
$this->currencyProviderChain = new CurrencyProviderChain();
$this->currencyProviderChain->addCurrencyProvider(ISOCurrencyProvider::getInstance());
$this->currencyProviderChain->addCurrencyProvider($this->configurableCurrencyProvider);
}
/**
* @return CurrencyProviderChain
*/
private function createCurrencyProviderChain()
{
$providerChain = new CurrencyProviderChain();
$isoProvider = ISOCurrencyProvider::getInstance();
$provider = new ConfigurableCurrencyProvider();
$provider->addCurrency($isoProvider->getCurrency('EUR'));
$provider->addCurrency($isoProvider->getCurrency('GBP'));
$providerChain->addCurrencyProvider($provider);
$provider = new ConfigurableCurrencyProvider();
$provider->addCurrency($isoProvider->getCurrency('USD'));
$provider->addCurrency($isoProvider->getCurrency('CAD'));
$providerChain->addCurrencyProvider($provider);
return $providerChain;
}
