chromium/third_party/blink/renderer/core/input/scroll_manager.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_INPUT_SCROLL_MANAGER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_INPUT_SCROLL_MANAGER_H_

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/dom_node_ids.h"
#include "third_party/blink/renderer/core/page/event_with_hit_test_results.h"
#include "third_party/blink/renderer/core/scroll/scroll_types.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/visitor.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/deque.h"

namespace blink {

class AutoscrollController;
class LayoutBox;
class LocalFrame;
class PaintLayer;
class PaintLayerScrollableArea;

// Scroll directions used to check whether propagation is possible in a given
// direction. Used in CanPropagate.
enum class ScrollPropagationDirection { … };

// This class is deprecated as scrolling is now handled by cc::InputHandler.
// It is still involved with the following main-thread operations:
// - keyboard scrolls
// - middle-click autoscroll
// - resizer-control interactions
// For Javascript scrolls, see ProgrammaticScrollAnimator.
// Do not add new things to this class.
// TODO(crbug.com/1503711): Remove keyboard scrolling.
class CORE_EXPORT ScrollManager : public GarbageCollected<ScrollManager> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_INPUT_SCROLL_MANAGER_H_