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49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 ZoomConstraintsClient_h_
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#define ZoomConstraintsClient_h_
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#include "FrameMetrics.h"
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#include "mozilla/Maybe.h"
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#include "nsIDOMEventListener.h"
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#include "nsIDocument.h"
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#include "nsIObserver.h"
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#include "nsWeakPtr.h"
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class nsIDOMEventTarget;
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class nsIDocument;
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class nsIPresShell;
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class ZoomConstraintsClient final : public nsIDOMEventListener,
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public nsIObserver
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDOMEVENTLISTENER
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NS_DECL_NSIOBSERVER
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ZoomConstraintsClient();
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private:
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~ZoomConstraintsClient();
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public:
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void Init(nsIPresShell* aPresShell, nsIDocument *aDocument);
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void Destroy();
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void ScreenSizeChanged();
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private:
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void RefreshZoomConstraints();
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nsCOMPtr<nsIDocument> mDocument;
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nsIPresShell* MOZ_NON_OWNING_REF mPresShell; // raw ref since the presShell owns this
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nsCOMPtr<nsIDOMEventTarget> mEventTarget;
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mozilla::Maybe<mozilla::layers::ScrollableLayerGuid> mGuid;
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};
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#endif
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