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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 mozilla_OriginTrials_h
#define mozilla_OriginTrials_h
#include "mozilla/origin_trials_ffi_generated.h"
#include "mozilla/EnumSet.h"
#include "nsStringFwd.h"
class nsIPrincipal;
class nsGlobalWindowInner;
struct JSContext;
class JSObject;
namespace mozilla {
using OriginTrial = origin_trials_ffi::OriginTrial;
// A class that keeps a set of enabled trials / features for a particular
// origin.
//
// These allow sites to opt-in and provide feedback into experimental features
// before we ship it to the general public.
class OriginTrials final {
public:
using RawType = EnumSet<OriginTrial>;
OriginTrials() = default;
static OriginTrials FromRaw(RawType aRaw) { return OriginTrials(aRaw); }
const RawType& Raw() const { return mEnabledTrials; }
// Parses and verifies a base64-encoded token from either a header or a meta
// tag. If the token is valid and not expired, this will enable the relevant
// feature.
void UpdateFromToken(const nsAString& aBase64EncodedToken,
nsIPrincipal* aPrincipal);
bool IsEnabled(OriginTrial aTrial) const;
// Checks whether a given origin trial is enabled for a given call.
static bool IsEnabled(JSContext*, JSObject*, OriginTrial);
// Computes the currently-applying trials for our global.
static OriginTrials FromWindow(const nsGlobalWindowInner*);
private:
explicit OriginTrials(RawType aRaw) : mEnabledTrials(aRaw) {}
RawType mEnabledTrials;
};
} // namespace mozilla
#endif
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