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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 ZoomConstraintsClient_h_
#define ZoomConstraintsClient_h_
#include "mozilla/layers/ScrollableLayerGuid.h"
#include "mozilla/layers/ZoomConstraints.h"
#include "mozilla/Maybe.h"
#include "nsCOMPtr.h"
#include "nsIDOMEventListener.h"
#include "nsIObserver.h"
namespace mozilla {
class PresShell;
namespace dom {
class Document;
class EventTarget;
} // namespace dom
} // namespace mozilla
class ZoomConstraintsClient final : public nsIDOMEventListener,
public nsIObserver {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMEVENTLISTENER
NS_DECL_NSIOBSERVER
ZoomConstraintsClient();
private:
~ZoomConstraintsClient();
public:
void Init(mozilla::PresShell* aPresShell, mozilla::dom::Document* aDocument);
void Destroy();
void ScreenSizeChanged();
bool GetAllowZoom() const { return mZoomConstraints.mAllowZoom; }
private:
void RefreshZoomConstraints();
RefPtr<mozilla::dom::Document> mDocument;
// raw ref since the presShell owns this
mozilla::PresShell* MOZ_NON_OWNING_REF mPresShell;
nsCOMPtr<mozilla::dom::EventTarget> mEventTarget;
mozilla::Maybe<mozilla::layers::ScrollableLayerGuid> mGuid;
mozilla::layers::ZoomConstraints mZoomConstraints;
};
#endif
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