Uses child views in Autofill Popup so we can trigger

chrome/browser/ui/autofill/autofill_popup_controller_impl.h

 // Copyright (c) 2012 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_AUTOFILL_AUTOFILL_POPUP_CONTROLLER_IMPL_H_
 #define CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_POPUP_CONTROLLER_IMPL_H_
 
 #include <stddef.h>
 
 #include "base/gtest_prod_util.h"
 #include "base/i18n/rtl.h"
 #include "base/memory/weak_ptr.h"
+#include "base/optional.h"
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "chrome/browser/ui/autofill/autofill_popup_controller.h"
 #include "chrome/browser/ui/autofill/autofill_popup_layout_model.h"
 #include "chrome/browser/ui/autofill/popup_controller_common.h"
+#include "ui/accessibility/ax_enums.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/native_theme/native_theme.h"
 
 namespace autofill {
 
 class AutofillPopupDelegate;
 class AutofillPopupView;
 
 // This class is a controller for an AutofillPopupView. It implements
@@ skipping 37 matching lines @@
                            ProperlyResetController);
 
   AutofillPopupControllerImpl(base::WeakPtr<AutofillPopupDelegate> delegate,
                               content::WebContents* web_contents,
                               gfx::NativeView container_view,
                               const gfx::RectF& element_bounds,
                               base::i18n::TextDirection text_direction);
   ~AutofillPopupControllerImpl() override;
 
   // AutofillPopupViewDelegate implementation.
-  void UpdateBoundsAndRedrawPopup() override;
   void SetSelectionAtPoint(const gfx::Point& point) override;
   bool AcceptSelectedLine() override;
   void SelectionCleared() override;
-  void AcceptSuggestion(size_t index) override;
   gfx::Rect popup_bounds() const override;
   gfx::NativeView container_view() override;
   const gfx::RectF& element_bounds() const override;
   bool IsRTL() const override;
   const std::vector<autofill::Suggestion> GetSuggestions() override;
 #if !defined(OS_ANDROID)
-  int GetElidedValueWidthForRow(size_t row) override;
-  int GetElidedLabelWidthForRow(size_t row) override;
+  int GetElidedValueWidthForRow(int row) override;
+  int GetElidedLabelWidthForRow(int row) override;
 #endif
 
   // AutofillPopupController implementation.
-  size_t GetLineCount() const override;
-  const autofill::Suggestion& GetSuggestionAt(size_t row) const override;
-  const base::string16& GetElidedValueAt(size_t row) const override;
-  const base::string16& GetElidedLabelAt(size_t row) const override;
+  void OnSuggestionsChanged() override;
+  void AcceptSuggestion(int index) override;
+  int GetLineCount() const override;
+  const autofill::Suggestion& GetSuggestionAt(int row) const override;
+  const base::string16& GetElidedValueAt(int row) const override;
+  const base::string16& GetElidedLabelAt(int row) const override;
   bool GetRemovalConfirmationText(int list_index,
                                   base::string16* title,
                                   base::string16* body) override;
   bool RemoveSuggestion(int list_index) override;
   ui::NativeTheme::ColorId GetBackgroundColorIDForRow(int index) const override;
-  int selected_line() const override;
+  base::Optional<int> selected_line() const override;
   const AutofillPopupLayoutModel& layout_model() const override;
 
   content::WebContents* web_contents();
 
   // Change which line is currently selected by the user.
-  void SetSelectedLine(int selected_line);
+  void SetSelectedLine(base::Optional<int> selected_line);
 
   // Increase the selected line by 1, properly handling wrapping.
   void SelectNextLine();
 
   // Decrease the selected line by 1, properly handling wrapping.
   void SelectPreviousLine();
 
   // The user has removed a suggestion.
   bool RemoveSelectedLine();
 
   // Returns true if the given id refers to an element that can be accepted.
   bool CanAccept(int id);
 
   // Returns true if the popup still has non-options entries to show the user.
   bool HasSuggestions();
 
   // Set the Autofill entry values. Exposed to allow tests to set these values
   // without showing the popup.
   void SetValues(const std::vector<autofill::Suggestion>& suggestions);
 
   AutofillPopupView* view() { return view_; }
 
-  // |view_| pass throughs (virtual for testing).
-  virtual void ShowView();
-  virtual void InvalidateRow(size_t row);
-
   base::WeakPtr<AutofillPopupControllerImpl> GetWeakPtr();
 
   // Contains common popup functionality such as popup layout. Protected for
   // testing.
   std::unique_ptr<PopupControllerCommon> controller_common_;
 
  private:
 #if !defined(OS_ANDROID)
   FRIEND_TEST_ALL_PREFIXES(AutofillPopupControllerUnitTest, ElideText);
-
   // Helper method which elides the value and label for the suggestion at |row|
   // given the |available_width|. Puts the results in |elided_values_| and
   // |elided_labels_|.
-  void ElideValueAndLabelForRow(size_t row, int available_width);
+  void ElideValueAndLabelForRow(int row, int available_width);
 #endif
 
   // Clear the internal state of the controller. This is needed to ensure that
   // when the popup is reused it doesn't leak values between uses.
   void ClearState();
 
+  friend class AutofillPopupControllerUnitTest;
+  void SetViewForTesting(AutofillPopupView* view) { view_ = view; }
+
   AutofillPopupView* view_;  // Weak reference.
   AutofillPopupLayoutModel layout_model_;
   base::WeakPtr<AutofillPopupDelegate> delegate_;
 
   // The text direction of the popup.
   base::i18n::TextDirection text_direction_;
 
   // The current Autofill query values.
   std::vector<autofill::Suggestion> suggestions_;
 
   // Elided values and labels corresponding to the suggestions_ vector to
   // ensure that it fits on the screen.
   std::vector<base::string16> elided_values_;
   std::vector<base::string16> elided_labels_;
 
-  // The line that is currently selected by the user.
-  // |kNoSelection| indicates that no line is currently selected.
-  int selected_line_;
+  // The line that is currently selected by the user, null indicates that no
+  // line is currently selected.
+  base::Optional<int> selected_line_;
 
   base::WeakPtrFactory<AutofillPopupControllerImpl> weak_ptr_factory_;
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_POPUP_CONTROLLER_IMPL_H_