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A controller that loads a shopping cart (think online shopping).
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/** | |
* A controller that loads a shopping cart (think online shopping). | |
*/ | |
public class CartControllerImpl implements CartController { | |
final CartModel model; | |
final TaxModel taxModel; | |
final CurrencyUnit currencyUnit; | |
final MoneyFormatter moneyFormatter; | |
final RxBus rxBus; | |
AtomicBoolean isLoading = new AtomicBoolean(false); | |
public CartControllerImpl( | |
CartModel model, | |
TaxModel taxModel, | |
CurrencyUnit currencyUnit, | |
MoneyFormatter moneyFormatter, | |
RxBus rxBus | |
) { | |
this.model = model; | |
this.taxModel = taxModel; | |
this.currencyUnit = currencyUnit; | |
this.moneyFormatter = moneyFormatter; | |
this.rxBus = rxBus; | |
} | |
@Override | |
public void load() { | |
//prevent repeating load calls when data is already loading | |
if (!isLoading.get()) { | |
isLoading.set(true); | |
model.getCart() | |
.withLatestFrom(taxModel.getTaxRate(), (entity, taxRate) -> | |
new Cart( | |
entity, | |
model, | |
currencyUnit, | |
moneyFormatter, | |
taxRate | |
) | |
) | |
.subscribe(new Subscriber<Cart>() { | |
@Override | |
public void onCompleted() { | |
isLoading.set(false); | |
} | |
@Override | |
public void onError(Throwable e) { | |
Timber.e(e, "Error loading cart"); | |
isLoading.set(false); | |
} | |
@Override | |
public void onNext(Cart cart) { | |
rxBus.send(new CartLoadedEvent(cart)); | |
} | |
}); | |
} | |
} | |
} |
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