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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 https://mozilla.org/MPL/2.0/. */
/*
* Struct for holding fullscreen request.
*/
#ifndef mozilla_FullscreenRequest_h
#define mozilla_FullscreenRequest_h
#include "mozilla/LinkedList.h"
#include "mozilla/PendingFullscreenEvent.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/Document.h"
#include "nsIScriptError.h"
#include "nsRefreshDriver.h"
namespace mozilla {
class FullscreenChange : public LinkedListElement<FullscreenChange> {
public:
FullscreenChange(const FullscreenChange&) = delete;
enum ChangeType {
eEnter,
eExit,
};
ChangeType Type() const { return mType; }
dom::Document* Document() const { return mDocument; }
dom::Promise* GetPromise() const { return mPromise; }
void MayResolvePromise() const {
if (mPromise) {
MOZ_ASSERT(mPromise->State() == Promise::PromiseState::Pending);
mPromise->MaybeResolveWithUndefined();
}
}
void MayRejectPromise(const nsACString& aMessage) {
if (mPromise) {
MOZ_ASSERT(mPromise->State() == Promise::PromiseState::Pending);
mPromise->MaybeRejectWithTypeError(aMessage);
}
}
template <int N>
void MayRejectPromise(const char (&aMessage)[N]) {
MayRejectPromise(nsLiteralCString(aMessage));
}
protected:
typedef dom::Promise Promise;
FullscreenChange(ChangeType aType, dom::Document* aDocument,
already_AddRefed<Promise> aPromise)
: mType(aType), mDocument(aDocument), mPromise(aPromise) {
MOZ_ASSERT(aDocument);
}
~FullscreenChange() {
MOZ_ASSERT_IF(mPromise,
mPromise->State() != Promise::PromiseState::Pending);
}
private:
ChangeType mType;
nsCOMPtr<dom::Document> mDocument;
RefPtr<Promise> mPromise;
};
class FullscreenRequest : public FullscreenChange {
public:
static const ChangeType kType = eEnter;
static UniquePtr<FullscreenRequest> Create(dom::Element* aElement,
dom::CallerType aCallerType,
ErrorResult& aRv) {
RefPtr<Promise> promise = Promise::Create(aElement->GetOwnerGlobal(), aRv);
return WrapUnique(
new FullscreenRequest(aElement, promise.forget(), aCallerType, true));
}
static UniquePtr<FullscreenRequest> CreateForRemote(dom::Element* aElement) {
return WrapUnique(new FullscreenRequest(aElement, nullptr,
dom::CallerType::NonSystem, false));
}
MOZ_COUNTED_DTOR(FullscreenRequest)
dom::Element* Element() const { return mElement; }
// Reject the fullscreen request with the given reason.
// It will dispatch the fullscreenerror event.
void Reject(const char* aReason) {
if (nsPresContext* presContext = Document()->GetPresContext()) {
auto pendingEvent = MakeUnique<PendingFullscreenEvent>(
FullscreenEventType::Error, Document(), mElement);
presContext->RefreshDriver()->ScheduleFullscreenEvent(
std::move(pendingEvent));
}
MayRejectPromise("Fullscreen request denied");
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag, "DOM"_ns,
Document(), nsContentUtils::eDOM_PROPERTIES,
aReason);
}
private:
RefPtr<dom::Element> mElement;
public:
// This value should be true if the fullscreen request is
// originated from system code.
const dom::CallerType mCallerType;
// This value denotes whether we should trigger a NewOrigin event if
// requesting fullscreen in its document causes the origin which is
// fullscreen to change. We may want *not* to trigger that event if
// we're calling RequestFullscreen() as part of a continuation of a
// request in a subdocument in different process, whereupon the caller
// need to send some notification itself with the real origin.
const bool mShouldNotifyNewOrigin;
private:
FullscreenRequest(dom::Element* aElement,
already_AddRefed<dom::Promise> aPromise,
dom::CallerType aCallerType, bool aShouldNotifyNewOrigin)
: FullscreenChange(kType, aElement->OwnerDoc(), std::move(aPromise)),
mElement(aElement),
mCallerType(aCallerType),
mShouldNotifyNewOrigin(aShouldNotifyNewOrigin) {
MOZ_COUNT_CTOR(FullscreenRequest);
}
};
class FullscreenExit : public FullscreenChange {
public:
static const ChangeType kType = eExit;
static UniquePtr<FullscreenExit> Create(dom::Document* aDoc,
ErrorResult& aRv) {
RefPtr<Promise> promise = Promise::Create(aDoc->GetOwnerGlobal(), aRv);
return WrapUnique(new FullscreenExit(aDoc, promise.forget()));
}
static UniquePtr<FullscreenExit> CreateForRemote(dom::Document* aDoc) {
return WrapUnique(new FullscreenExit(aDoc, nullptr));
}
MOZ_COUNTED_DTOR(FullscreenExit)
private:
FullscreenExit(dom::Document* aDoc, already_AddRefed<Promise> aPromise)
: FullscreenChange(kType, aDoc, std::move(aPromise)) {
MOZ_COUNT_CTOR(FullscreenExit);
}
};
} // namespace mozilla
#endif // mozilla_FullscreenRequest_h
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