[Payment Request] Moves PaymentRequestViewController to :payments_ui

ios/chrome/browser/ui/payments/payment_request_view_controller_data_source.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_PAYMENTS_PAYMENT_REQUEST_VIEW_CONTROLLER_DATA_SOURCE_H_
+#define IOS_CHROME_BROWSER_UI_PAYMENTS_PAYMENT_REQUEST_VIEW_CONTROLLER_DATA_SOURCE_H_
+
+#import <Foundation/Foundation.h>
+
+@class CollectionViewFooterItem;
+@class CollectionViewItem;
+
+// Data source protocol for PaymentRequestViewController.
+@protocol PaymentRequestViewControllerDataSource
+
+// Returns whether the payment can be made and therefore the pay button should
+// be enabled.
+- (BOOL)canPay;
+
+// Returns whether shipment can be done and therefore the shipping options
+// should be presented.
+- (BOOL)canShip;
+
+// Returns whether the total price is itemized.
+- (BOOL)hasPaymentItems;
+
+// Returns whether shipping is requested and therefore the Shipping section
+// should be presented.
+- (BOOL)requestShipping;
+
+// Returns whether contact information is requested and therefore the Contact
+// Info section should be presented.
+- (BOOL)requestContactInfo;
+
+// Returns the Payment Summary item displayed in the Summary section.
+- (CollectionViewItem*)paymentSummaryItem;
+
+// Returns the header item for the Shipping section.
+- (CollectionViewItem*)shippingSectionHeaderItem;
+
+// Returns the Shipping Address item displayed in the Shipping section.
+- (CollectionViewItem*)shippingAddressItem;
+
+// Returns the Shipping Option item displayed in the Shipping section.
+- (CollectionViewItem*)shippingOptionItem;
+
+// Returns the header item for the Payment Method section.
+- (CollectionViewItem*)paymentMethodSectionHeaderItem;
+
+// Returns the item displayed in the Payment Method section.
+- (CollectionViewItem*)paymentMethodItem;
+
+// Returns the header item for the Contact Info section.
+- (CollectionViewItem*)contactInfoSectionHeaderItem;
+
+// Returns the item displayed in the Contact Info section.
+- (CollectionViewItem*)contactInfoItem;
+
+// Returns the item displayed at the bottom of the view.
+- (CollectionViewFooterItem*)footerItem;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_PAYMENTS_PAYMENT_REQUEST_VIEW_CONTROLLER_DATA_SOURCE_H_