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