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