Re-land:

views/widget/native_widget.h

 // Copyright (c) 2011 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 VIEWS_WIDGET_NATIVE_WIDGET_H_
 #define VIEWS_WIDGET_NATIVE_WIDGET_H_
 #pragma once
 
 #include <set>
 
@@ skipping 18 matching lines @@
 //
 //  An interface implemented by an object that encapsulates rendering, event
 //  handling and widget management provided by an underlying native toolkit.
 //
 class NativeWidget {
  public:
   typedef std::set<NativeWidget*> NativeWidgets;
 
   virtual ~NativeWidget() {}
 
+  // Creates an appropriate default NativeWidget implementation for the current
+  // OS/circumstance.
+  static NativeWidget* CreateNativeWidget(
+      internal::NativeWidgetDelegate* delegate);
+
   // Retrieves the NativeWidget implementation associated with the given
   // NativeView or Window, or NULL if the supplied handle has no associated
   // NativeView.
   static NativeWidget* GetNativeWidgetForNativeView(
       gfx::NativeView native_view);
   static NativeWidget* GetNativeWidgetForNativeWindow(
       gfx::NativeWindow native_window);
 
   // Retrieves the top NativeWidget in the hierarchy containing the given
   // NativeView, or NULL if there is no NativeWidget that contains it.
   static NativeWidget* GetTopLevelNativeWidget(gfx::NativeView native_view);
 
   // Returns all NativeWidgets in |native_view|'s hierarchy, including itself if
   // it is one.
   static void GetAllNativeWidgets(gfx::NativeView native_view,
                                   NativeWidgets* children);
 
   // Reparent a NativeView and notify all NativeWidgets in
   // |native_view|'s hierarchy of the change.
   static void ReparentNativeView(gfx::NativeView native_view,
                                  gfx::NativeView new_parent);
 
   // Initializes the NativeWidget.
   virtual void InitNativeWidget(const Widget::InitParams& params) = 0;
 
   // Returns the Widget associated with this NativeWidget. This function is
   // guaranteed to return non-NULL for the lifetime of the NativeWidget.
   virtual Widget* GetWidget() = 0;
+  virtual const Widget* GetWidget() const = 0;
+
+  // Returns the NativeView/Window associated with this NativeWidget.
+  virtual gfx::NativeView GetNativeView() const = 0;
+  virtual gfx::NativeWindow GetNativeWindow() const = 0;
+
+  // Returns the enclosing Window, or NULL if there is no enclosing Window.
+  virtual Window* GetContainingWindow() = 0;
+  virtual const Window* GetContainingWindow() const = 0;
+
+  // Notifies the NativeWidget that a view was removed from the Widget's view
+  // hierarchy.
+  virtual void ViewRemoved(View* view) = 0;
 
   // Sets/Gets a native window property on the underlying native window object.
   // Returns NULL if the property does not exist. Setting the property value to
   // NULL removes the property.
   virtual void SetNativeWindowProperty(const char* name, void* value) = 0;
   virtual void* GetNativeWindowProperty(const char* name) = 0;
 
   // Returns the native widget's tooltip manager. Called from the View hierarchy
   // to update tooltips.
   virtual TooltipManager* GetTooltipManager() const = 0;
 
   // Returns true if a system screen reader is active for the NativeWidget.
   virtual bool IsScreenReaderActive() const = 0;
 
+  // Notify native Accessibility clients of an event.
+  virtual void SendNativeAccessibilityEvent(
+      View* view,
+      ui::AccessibilityTypes::Event event_type) = 0;
+
   // Sets or releases event capturing for this native widget.
   virtual void SetMouseCapture() = 0;
   virtual void ReleaseMouseCapture() = 0;
 
   // Returns true if this native widget is capturing all events.
   virtual bool HasMouseCapture() const = 0;
 
+  // Returns true if any mouse button is currently pressed.
+  virtual bool IsMouseButtonDown() const = 0;
+
   // Returns the InputMethod for this native widget.
   // Note that all widgets in a widget hierarchy share the same input method.
   // TODO(suzhe): rename to GetInputMethod() when NativeWidget implementation
   // class doesn't inherit Widget anymore.
   virtual InputMethod* GetInputMethodNative() = 0;
 
   // Sets a different InputMethod instance to this native widget. The instance
   // must not be initialized, the ownership will be assumed by the native
   // widget. It's only for testing purpose.
   virtual void ReplaceInputMethod(InputMethod* input_method) = 0;
@@ skipping 26 matching lines @@
   virtual void RunShellDrag(View* view,
                             const ui::OSExchangeData& data,
                             int operation) = 0;
   virtual void SchedulePaintInRect(const gfx::Rect& rect) = 0;
   virtual void SetCursor(gfx::NativeCursor cursor) = 0;
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_NATIVE_WIDGET_H_