chromium/third_party/blink/renderer/core/page/scrolling/top_document_root_scroller_controller.h

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_SCROLLING_TOP_DOCUMENT_ROOT_SCROLLER_CONTROLLER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_SCROLLING_TOP_DOCUMENT_ROOT_SCROLLER_CONTROLLER_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/page/scrolling/root_scroller_controller.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "ui/gfx/geometry/size.h"

namespace blink {

class LocalFrameView;
class Node;
class Page;
class RootFrameViewport;
class ScrollableArea;

// This class manages the the page level aspects of the root scroller.  That
// is, given all the iframes on a page and their individual root scrollers,
// this class will determine which ultimate Node should be used as the root
// scroller and ensures that Node is used to scroll browser controls and
// provide overscroll effects. High level details are available in README.md.
// TODO(bokan): This class is currently OOPIF unaware. crbug.com/642378.
class CORE_EXPORT TopDocumentRootScrollerController
    : public GarbageCollected<TopDocumentRootScrollerController> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_PAGE_SCROLLING_TOP_DOCUMENT_ROOT_SCROLLER_CONTROLLER_H_