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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_ScrollingInteractionContext_h
#define mozilla_layers_ScrollingInteractionContext_h
#include "mozilla/EventForwards.h"
#include "mozilla/layers/ScrollableLayerGuid.h"
namespace mozilla {
namespace layers {
// The ScrollingInteractionContext is used to store minor details of the
// current scrolling interaction on the stack to avoid having to pass them
// though the callstack
class MOZ_STACK_CLASS ScrollingInteractionContext {
private:
static bool sScrollingToAnchor;
public:
// Functions to access downwards-propagated data
static bool IsScrollingToAnchor();
// Constructor sets the data to be propagated downwards
explicit ScrollingInteractionContext(bool aScrollingToAnchor);
// Destructor restores the previous state
~ScrollingInteractionContext();
private:
bool mOldScrollingToAnchor;
};
} // namespace layers
} // namespace mozilla
#endif /* mozilla_layers_ScrollingInteractionContext_h */
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