/* 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_VisualViewport_h
#define mozilla_dom_VisualViewport_h
#include "Units.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/VisualViewportBinding.h"
class nsPresContext;
namespace mozilla {
class PresShell;
namespace dom {
/* Visual Viewport API spec:
* https://wicg.github.io/visual-viewport/#the-visualviewport-interface */
class VisualViewport final : public mozilla::DOMEventTargetHelper {
public:
explicit VisualViewport(nsPIDOMWindowInner* aWindow);
double OffsetLeft()
const;
double OffsetTop()
const;
double PageLeft()
const;
double PageTop()
const;
MOZ_CAN_RUN_SCRIPT
double Width()
const;
MOZ_CAN_RUN_SCRIPT
double Height()
const;
double Scale()
const;
IMPL_EVENT_HANDLER(resize)
IMPL_EVENT_HANDLER(scroll)
IMPL_EVENT_HANDLER(scrollend)
virtual JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
void GetEventTargetParent(EventChainPreVisitor& aVisitor) override;
void PostResizeEvent();
MOZ_CAN_RUN_SCRIPT
void FireResizeEvent();
void PostScrollEvent(
const nsPoint& aPrevVisualOffset,
const nsPoint& aPrevLayoutOffset);
void PostScrollEndEvent();
class VisualViewportScrollEvent;
class VisualViewportScrollEndEvent;
private:
virtual ~VisualViewport();
MOZ_CAN_RUN_SCRIPT CSSSize VisualViewportSize()
const;
CSSPoint VisualViewportOffset()
const;
CSSPoint LayoutViewportOffset()
const;
Document* GetDocument()
const;
PresShell* GetPresShell()
const;
nsPresContext* GetPresContext()
const;
MOZ_CAN_RUN_SCRIPT
void FireScrollEvent();
MOZ_CAN_RUN_SCRIPT
void FireScrollEndEvent();
RefPtr<VisualViewportScrollEvent> mScrollEvent;
RefPtr<VisualViewportScrollEndEvent> mScrollEndEvent;
};
}
// namespace dom
}
// namespace mozilla
#endif // mozilla_dom_VisualViewport_h
