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   // Overridden from aura::WindowObserver:
  44   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
  45
  46   // Reparents the native view with the clipping window existing between it and
  47   // its old parent, so that the fast resize path works.
  48   void AddClippingWindow();
  49
  50   // If the native view has been reparented via AddClippingWindow, this call
  51   // undoes it.
  52   void RemoveClippingWindow();
  53
  54   // Our associated NativeViewHost.
  55   NativeViewHost* host_;
  56
  57   // Window that exists between the native view and the parent that allows for
  58   // clipping to occur. This is positioned in the coordinate space of
  59   // host_->GetWidget().
  60   aura::Window clipping_window_;
  61   scoped_ptr<gfx::Rect> clip_rect_;
  62
  63   DISALLOW_COPY_AND_ASSIGN(NativeViewHostAura);
  64 };
  65
  66 }  // namespace views
  67
  68 #endif  // UI_VIEWS_CONTROLS_NATIVE_NATIVE_VIEW_HOST_AURA_H_