[Web Payments] Handle "Enter" accelerator when there's a primary action

chrome/browser/ui/views/payments/payment_request_sheet_controller.h

 // Copyright 2016 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 CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_SHEET_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_SHEET_CONTROLLER_H_
 
 #include <memory>
 
 #include "base/macros.h"
+#include "chrome/browser/ui/views/payments/payment_request_dialog_view_ids.h"
 #include "ui/views/controls/button/button.h"
 
 namespace views {
 class View;
 }
 
 namespace payments {
 
 class PaymentRequestDialogView;
 class PaymentRequestSpec;
@@ skipping 72 matching lines @@
   std::unique_ptr<views::View> CreateFooterView();
 
   // Returns the view that should be initially focused on this sheet. Typically,
   // this returns the primary button if it's enabled or the secondary button
   // otherwise. Subclasses may return a different view if they need focus to
   // start off on a different view (a textfield for example). This will only be
   // called after the view has been completely created through calls to
   // CreatePaymentView and related functions.
   virtual views::View* GetFirstFocusedView();
 
+  // Returns true if the subclass wants the content sheet to have an id, and
+  // sets |sheet_id| to the desired value.
+  virtual bool GetSheetId(DialogViewID* sheet_id);
+
  private:
   // Creates a view to be displayed in the PaymentRequestDialog.
   // |header_view| is the view displayed on top of the dialog, containing title,
   // (optional) back button, and close buttons.
   // |content_view| is displayed between |header_view| and the pay/cancel
   // buttons. Also adds the footer, returned by CreateFooterView(), which is
   // clamped to the bottom of the containing view.  The returned view takes
   // ownership of |header_view|, |content_view|, and the footer.
   // +---------------------------+
   // |        HEADER VIEW        |
   // +---------------------------+
   // |          CONTENT          |
   // |           VIEW            |
   // +---------------------------+
   // | EXTRA VIEW | PAY | CANCEL | <-- footer
   // +---------------------------+
   std::unique_ptr<views::View> CreatePaymentView();
 
+  // Called when the Enter accelerator is pressed. Perform the action associated
+  // with the primary button and returns true if it's enabled, returns false
+  // otherwise.
+  bool PerformPrimaryButtonAction();
+
   // All these are not owned. Will outlive this.
   PaymentRequestSpec* spec_;
   PaymentRequestState* state_;
   PaymentRequestDialogView* dialog_;
 
   // This view is owned by its encompassing ScrollView.
   views::View* pane_;
   views::View* content_view_;
 
   // Hold on to the ScrollView because it must be explicitly laid out in some
   // cases.
   std::unique_ptr<views::ScrollView> scroll_;
 
   // Hold on to the primary and secondary buttons to use them as initial focus
   // targets when subclasses don't want to focus anything else.
   std::unique_ptr<views::Button> primary_button_;
   std::unique_ptr<views::Button> secondary_button_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestSheetController);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_SHEET_CONTROLLER_H_