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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_dom_SessionStoreScrollData_h
#define mozilla_dom_SessionStoreScrollData_h
#include "js/TypeDecls.h"
#include "mozilla/WeakPtr.h"
#include "nsPoint.h"
#include "nsTArray.h"
#include "nsWrapperCache.h"
#include "mozilla/dom/WindowGlobalParent.h"
#include "mozilla/dom/SessionStoreChangeListener.h"
namespace mozilla::dom {
class BrowsingContext;
class WindowGlobalParent;
class OwningByteStringOrObjectOrNull;
struct SessionStoreZoomData;
using SessionStoreZoom = std::tuple<float, uint32_t, uint32_t>;
using MaybeSessionStoreZoom =
mozilla::Maybe<std::tuple<float, uint32_t, uint32_t>>;
class SessionStoreScrollData final : public nsISupports,
public nsWrapperCache,
public SupportsWeakPtr {
public:
using CollectedType = nsPoint;
using LocationType = WeakPtr<SessionStoreScrollData>;
using ChildrenArray = nsTArray<RefPtr<SessionStoreScrollData>>;
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(SessionStoreScrollData)
nsISupports* GetParentObject() const;
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
void GetScroll(nsACString& aScroll) const;
ChildrenArray& Children();
void GetChildren(Nullable<ChildrenArray>& aChildren) const;
void ToJSON(JSContext* aCx, JS::MutableHandle<JSObject*> aRetval);
void Update(const CollectedType& aUpdate);
void ClearCachedChildren();
static bool HasData(const CollectedType& aPoint);
bool IsEmpty() const;
private:
~SessionStoreScrollData() = default;
nsPoint mScroll;
MaybeSessionStoreZoom mZoom;
nsTArray<RefPtr<SessionStoreScrollData>> mChildren;
};
} // namespace mozilla::dom
#endif // mozilla_dom_SessionStoreScrollData_h
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