ui/views/controls/native/native_view_host_aura.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_AURA_H_
   6 #define UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_AURA_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "ui/aura/window.h"
  11 #include "ui/aura/window_observer.h"
  12 #include "ui/views/controls/native/native_view_host_wrapper.h"
  13 #include "ui/views/views_export.h"
  14
  15 namespace views {
  16
  17 class NativeViewHost;
  18
  19 // Aura implementation of NativeViewHostWrapper.
  20 class VIEWS_EXPORT NativeViewHostAura : public NativeViewHostWrapper,
  21                                         public aura::WindowObserver {
  22  public:
  23   explicit NativeViewHostAura(NativeViewHost* host);
  24   virtual ~NativeViewHostAura();
  25
  26   // Overridden from NativeViewHostWrapper:
  27   virtual void AttachNativeView() override;
  28   virtual void NativeViewDetaching(bool destroyed) override;
  29   virtual void AddedToWidget() override;
  30   virtual void RemovedFromWidget() override;
  31   virtual void InstallClip(int x, int y, int w, int h) override;
  32   virtual bool HasInstalledClip() override;
  33   virtual void UninstallClip() override;
  34   virtual void ShowWidget(int x, int y, int w, int h) override;
  35   virtual void HideWidget() override;
  36   virtual void SetFocus() override;
  37   virtual gfx::NativeViewAccessible GetNativeViewAccessible() override;
  38   virtual gfx::NativeCursor GetCursor(int x, int y) override;
  39
  40  private:
  41   friend class NativeViewHostAuraTest;
  42
  43   class ClippingWindowDelegate;
  44
  45   // Overridden from aura::WindowObserver:
  46   virtual void OnWindowDestroying(aura::Window* window) override;
  47   virtual void OnWindowDestroyed(aura::Window* window) override;
  48
  49   // Reparents the native view with the clipping window existing between it and
  50   // its old parent, so that the fast resize path works.
  51   void AddClippingWindow();
  52
  53   // If the native view has been reparented via AddClippingWindow, this call
  54   // undoes it.
  55   void RemoveClippingWindow();
  56
  57   // Our associated NativeViewHost.
  58   NativeViewHost* host_;
  59
  60   scoped_ptr<ClippingWindowDelegate> clipping_window_delegate_;
  61
  62   // Window that exists between the native view and the parent that allows for
  63   // clipping to occur. This is positioned in the coordinate space of
  64   // host_->GetWidget().
  65   aura::Window clipping_window_;
  66   scoped_ptr<gfx::Rect> clip_rect_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(NativeViewHostAura);
  69 };
  70
  71 }  // namespace views
  72
  73 #endif  // UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_AURA_H_