third_party/WebKit/Source/bindings/core/v8/ConditionalFeatures.cpp

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "bindings/core/v8/ConditionalFeatures.h"

#include "bindings/core/v8/ScriptState.h"
#include "bindings/core/v8/V8HTMLLinkElement.h"
#include "bindings/core/v8/V8Navigator.h"
#include "bindings/core/v8/V8Window.h"
#include "core/dom/ExecutionContext.h"
#include "core/origin_trials/OriginTrialContext.h"

namespace blink {

void installConditionalFeaturesCore(const WrapperTypeInfo* wrapperTypeInfo,
                                    const ScriptState* scriptState,
                                    v8::Local<v8::Object> prototypeObject,
                                    v8::Local<v8::Function> interfaceObject) {
  // TODO(iclelland): Generate all of this logic at compile-time, based on the
  // configuration of origin trial enabled attibutes and interfaces in IDL
  // files. (crbug.com/615060)
  ExecutionContext* executionContext = scriptState->getExecutionContext();
  if (!executionContext)
    return;
  OriginTrialContext* originTrialContext = OriginTrialContext::from(
      executionContext, OriginTrialContext::DontCreateIfNotExists);
  if (wrapperTypeInfo == &V8HTMLLinkElement::wrapperTypeInfo) {
    if (RuntimeEnabledFeatures::linkServiceWorkerEnabled() ||
        (originTrialContext &&
         originTrialContext->isFeatureEnabled("ForeignFetch"))) {
      V8HTMLLinkElement::installLinkServiceWorker(
          scriptState->isolate(), scriptState->world(), v8::Local<v8::Object>(),
          prototypeObject, interfaceObject);
    }
  }
}

namespace {

InstallConditionalFeaturesFunction s_installConditionalFeaturesFunction =
    &installConditionalFeaturesCore;
}

InstallConditionalFeaturesFunction setInstallConditionalFeaturesFunction(
    InstallConditionalFeaturesFunction newInstallConditionalFeaturesFunction) {
  InstallConditionalFeaturesFunction originalFunction =
      s_installConditionalFeaturesFunction;
  s_installConditionalFeaturesFunction = newInstallConditionalFeaturesFunction;
  return originalFunction;
}

void installConditionalFeatures(const WrapperTypeInfo* type,
                                const ScriptState* scriptState,
                                v8::Local<v8::Object> prototypeObject,
                                v8::Local<v8::Function> interfaceObject) {
  (*s_installConditionalFeaturesFunction)(type, scriptState, prototypeObject,
                                          interfaceObject);
}

}  // namespace blink