Track text selection on the browser side (Mac)

content/browser/renderer_host/render_widget_host_view_base.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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 66 matching lines @@
 // Basic implementation shared by concrete RenderWidgetHostView subclasses.
 class CONTENT_EXPORT RenderWidgetHostViewBase : public RenderWidgetHostView,
                                                 public IPC::Listener {
  public:
   ~RenderWidgetHostViewBase() override;
 
   float current_device_scale_factor() const {
     return current_device_scale_factor_;
   }
 
+  // Returns the view which is inside |view| and is currently focused (i.e.,
+  // accepts input events). It might return nullptr if |view| does not have a
+  // RenderWidgetHost or the focused widget returned by RenderWidgetHostDelegate
+  // for the |view|'s RWH is nullptr.
+  static RenderWidgetHostViewBase* GetFocusedSubView(
+      RenderWidgetHostViewBase* view);
+
   // RenderWidgetHostView implementation.
+  RenderWidgetHost* GetRenderWidgetHost() const override;
   void SetBackgroundColor(SkColor color) override;
   void SetBackgroundColorToDefault() final;
   bool GetBackgroundOpaque() override;
   ui::TextInputClient* GetTextInputClient() override;
   void WasUnOccluded() override {}
   void WasOccluded() override {}
   bool IsShowingContextMenu() const override;
   void SetShowingContextMenu(bool showing_menu) override;
   base::string16 GetSelectedText() override;
   bool IsMouseLocked() override;
@@ skipping 306 matching lines @@
   // null reference is obtained, its value is cached in |text_input_manager_|
   // and this view is registered with it. The RWHV will unregister from the
   // TextInputManager if it is destroyed or if the TextInputManager itself is
   // destroyed. The unregistration of the RWHV from TextInputManager is
   // necessary and must be done by explicitly calling
   // TextInputManager::Unregister.
   // It is safer to use this method rather than directly dereferencing
   // |text_input_manager_|.
   TextInputManager* GetTextInputManager();
 
+  // Returns the the view which has a RWH and is currently accepting input
+  // events (focused).
+  RenderWidgetHostViewBase* GetFocusedAttachedSubView() const;
+
   // Whether this view is a popup and what kind of popup it is (select,
   // autofill...).
   blink::WebPopupType popup_type_;
 
   // The background color of the web content.
   SkColor background_color_;
 
   // While the mouse is locked, the cursor is hidden from the user. Mouse events
   // are still generated. However, the position they report is the last known
   // mouse position just as mouse lock was entered; the movement they report
@@ skipping 48 matching lines @@
   base::ObserverList<RenderWidgetHostViewBaseObserver> observers_;
 
   base::WeakPtrFactory<RenderWidgetHostViewBase> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_