Refactors HWNDView, NativeViewHostGtk and NativeViewHost so that they match t...

views/controls/native_view_host.h

-// Copyright (c) 2009 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_CONTROLS_NATIVE_VIEW_HOST_H_
-#define VIEWS_CONTROLS_NATIVE_VIEW_HOST_H_
-
-#include <string>
-
-#include "views/view.h"
-
-#include "base/gfx/native_widget_types.h"
-
-namespace views {
-
-// Base class for embedding native widgets in a view.
-class NativeViewHost : public View {
- public:
-  NativeViewHost();
-  virtual ~NativeViewHost();
-
-  void SetPreferredSize(const gfx::Size& size);
-  virtual gfx::Size GetPreferredSize();
-
-  // Overriden to invoke Layout.
-  virtual void VisibilityChanged(View* starting_from, bool is_visible);
-
-  // Invokes any of InstallClip, UninstallClip, ShowWidget or HideWidget
-  // depending upon what portion of the widget is view in the parent.
-  virtual void Layout();
-
-  // A NativeViewHost has an associated focus View so that the focus of the
-  // native control and of the View are kept in sync. In simple cases where the
-  // NativeViewHost directly wraps a native window as is, the associated view
-  // is this View. In other cases where the NativeViewHost is part of another
-  // view (such as TextField), the actual View is not the NativeViewHost and
-  // this method must be called to set that.
-  // This method must be called before Attach().
-  void SetAssociatedFocusView(View* view) { focus_view_ = view; }
-  View* associated_focus_view() { return focus_view_; }
-
-  void set_fast_resize(bool fast_resize) { fast_resize_ = fast_resize; }
-  bool fast_resize() const { return fast_resize_; }
-
-  // The embedded native view.
-  gfx::NativeView native_view() const { return native_view_; }
-
- protected:
-  // Notification that our visible bounds relative to the root has changed.
-  // Invokes Layout to make sure the widget is positioned correctly.
-  virtual void VisibleBoundsInRootChanged();
-
-  // Sets the native view. Subclasses will typically invoke Layout after setting
-  // the widget.
-  void set_native_view(gfx::NativeView widget) { native_view_ = widget; }
-
-  // Installs a clip on the native widget.
-  virtual void InstallClip(int x, int y, int w, int h) = 0;
-
-  // Removes the clip installed on the native widget by way of InstallClip.
-  virtual void UninstallClip() = 0;
-
-  // Shows the widget at the specified position (relative to the parent widget).
-  virtual void ShowWidget(int x, int y, int w, int h) = 0;
-
-  // Hides the widget. NOTE: this may be invoked when the widget is already
-  // hidden.
-  virtual void HideWidget() = 0;
-
-  void set_installed_clip(bool installed_clip) {
-    installed_clip_ = installed_clip;
-  }
-  bool installed_clip() const { return installed_clip_; }
-
- private:
-  gfx::NativeView native_view_;
-
-  // The preferred size of this View
-  gfx::Size preferred_size_;
-
-  // Have we installed a region on the HWND used to clip to only the visible
-  // portion of the HWND?
-  bool installed_clip_;
-
-  // Fast resizing will move the hwnd and clip its window region, this will
-  // result in white areas and will not resize the content (so scrollbars
-  // will be all wrong and content will flow offscreen). Only use this
-  // when you're doing extremely quick, high-framerate vertical resizes
-  // and don't care about accuracy. Make sure you do a real resize at the
-  // end. USE WITH CAUTION.
-  bool fast_resize_;
-
-  // The view that should be given focus when this NativeViewHost is focused.
-  View* focus_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeViewHost);
-};
-
-}  // namespace views
-
-#endif  // VIEWS_CONTROLS_NATIVE_VIEW_HOST_H_