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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_layers_KeyboardScrollAction_h
#define mozilla_layers_KeyboardScrollAction_h
#include <cstdint> // for uint8_t
#include "mozilla/ScrollTypes.h"
#include "mozilla/DefineEnum.h" // for MOZ_DEFINE_ENUM
namespace mozilla {
namespace layers {
/**
* This class represents a scrolling action to be performed on a scrollable
* layer.
*/
struct KeyboardScrollAction final {
public:
// clang-format off
MOZ_DEFINE_ENUM_WITH_BASE_AT_CLASS_SCOPE(
KeyboardScrollActionType, uint8_t, (
eScrollCharacter,
eScrollLine,
eScrollPage,
eScrollComplete
));
// clang-format on
static ScrollUnit GetScrollUnit(KeyboardScrollActionType aDeltaType);
KeyboardScrollAction();
KeyboardScrollAction(KeyboardScrollActionType aType, bool aForward);
// The type of scroll to perform for this action
KeyboardScrollActionType mType;
// Whether to scroll forward or backward along the axis of this action type
bool mForward;
};
} // namespace layers
} // namespace mozilla
#endif // mozilla_layers_KeyboardScrollAction_h