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This ensures that repeated calls to Element::GetGridFragments will return an array of idempotent Grid objects for each fragment. This is accomplished by making the Grid object hold a WeakFrame back to its originating frame, and updating a property on construction and destruction. Differential Revision: https://phabricator.services.mozilla.com/D169724
51 lines
1.3 KiB
C++
51 lines
1.3 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_Grid_h
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#define mozilla_dom_Grid_h
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#include "GridArea.h"
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#include "nsGridContainerFrame.h"
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#include "nsISupports.h"
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#include "nsWrapperCache.h"
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namespace mozilla::dom {
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class Element;
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class GridDimension;
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class Grid : public nsISupports, public nsWrapperCache {
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public:
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explicit Grid(nsISupports* aParent, nsGridContainerFrame* aFrame);
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protected:
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virtual ~Grid();
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Grid)
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virtual JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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Element* GetParentObject() { return mParent; }
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void ForgetFrame();
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GridDimension* Rows() const;
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GridDimension* Cols() const;
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void GetAreas(nsTArray<RefPtr<GridArea>>& aAreas) const;
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protected:
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nsCOMPtr<Element> mParent;
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WeakFrame mFrame;
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RefPtr<GridDimension> mRows;
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RefPtr<GridDimension> mCols;
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nsTArray<RefPtr<GridArea>> mAreas;
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};
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} // namespace mozilla::dom
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#endif /* mozilla_dom_Grid_h */
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