chromium/third_party/blink/renderer/core/frame/browser_controls.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_FRAME_BROWSER_CONTROLS_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_BROWSER_CONTROLS_H_

#include "cc/input/browser_controls_state.h"
#include "cc/trees/browser_controls_params.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"

namespace blink {
class Page;

// This class encapsulate data and logic required to show/hide browser controls
// duplicating cc::BrowserControlsOffsetManager behaviour.  Browser controls'
// self-animation to completion is still handled by compositor and kicks in
// when scrolling is complete (i.e, upon ScrollEnd or FlingEnd). Browser
// controls can exist at the top or bottom of the screen and potentially at the
// same time. Bottom controls differ from top in that, if they exist alone,
// never translate the content down and scroll immediately, regardless of the
// controls' offset.
class CORE_EXPORT BrowserControls final
    : public GarbageCollected<BrowserControls> { … };
}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_FRAME_BROWSER_CONTROLS_H_