C++ (Cpp) GetScriptOwner示例

示例#1

文件： IDBRequest.cpp 项目： cliqz-oss/browser-f

void
IDBRequest::SetResultCallback(ResultCallback* aCallback)
{
  AssertIsOnOwningThread();
  MOZ_ASSERT(aCallback);
  MOZ_ASSERT(!mHaveResultOrErrorCode);
  MOZ_ASSERT(mResultVal.isUndefined());
  MOZ_ASSERT(!mError);

  // See if our window is still valid.
  if (NS_WARN_IF(NS_FAILED(CheckInnerWindowCorrectness()))) {
    SetError(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
    return;
  }

  AutoJSAPI autoJS;
  Maybe<JSAutoCompartment> ac;

  if (GetScriptOwner()) {
    // If we have a script owner we want the SafeJSContext and then to enter the
    // script owner's compartment.
    autoJS.Init();
    JS::ExposeObjectToActiveJS(GetScriptOwner());
    ac.emplace(autoJS.cx(), GetScriptOwner());
  } else {
    // Otherwise our owner is a window and we use that to initialize.
    MOZ_ASSERT(GetOwner());
    if (!autoJS.Init(GetOwner())) {
      IDB_WARNING("Failed to initialize AutoJSAPI!");
      SetError(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
      return;
    }
  }

  JSContext* cx = autoJS.cx();

  AssertIsRooted();

  JS::Rooted<JS::Value> result(cx);
  nsresult rv = aCallback->GetResult(cx, &result);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    // This can only fail if the structured clone contains a mutable file
    // and the child is not in the main thread and main process.
    // In that case CreateAndWrapMutableFile() returns false which shows up
    // as NS_ERROR_DOM_DATA_CLONE_ERR here.
    MOZ_ASSERT(rv == NS_ERROR_DOM_DATA_CLONE_ERR);

    // We are not setting a result or an error object here since we want to
    // throw an exception when the 'result' property is being touched.
    return;
  }

  mError = nullptr;
  mResultVal = result;

  mHaveResultOrErrorCode = true;
}

示例#2

文件： IDBRequest.cpp 项目： alex-tifrea/gecko-dev

void
IDBRequest::SetResultCallback(ResultCallback* aCallback)
{
  AssertIsOnOwningThread();
  MOZ_ASSERT(aCallback);
  MOZ_ASSERT(!mHaveResultOrErrorCode);
  MOZ_ASSERT(mResultVal.isUndefined());
  MOZ_ASSERT(!mError);

  // See if our window is still valid.
  if (NS_WARN_IF(NS_FAILED(CheckInnerWindowCorrectness()))) {
    IDB_REPORT_INTERNAL_ERR();
    SetError(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
    return;
  }

  AutoJSAPI autoJS;
  Maybe<JSAutoCompartment> ac;

  if (GetScriptOwner()) {
    // If we have a script owner we want the SafeJSContext and then to enter the
    // script owner's compartment.
    autoJS.Init();
    ac.emplace(autoJS.cx(), GetScriptOwner());
  } else {
    // Otherwise our owner is a window and we use that to initialize.
    MOZ_ASSERT(GetOwner());
    if (!autoJS.InitWithLegacyErrorReporting(GetOwner())) {
      IDB_WARNING("Failed to initialize AutoJSAPI!");
      SetError(NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
      return;
    }
  }

  JSContext* cx = autoJS.cx();

  AssertIsRooted();

  JS::Rooted<JS::Value> result(cx);
  nsresult rv = aCallback->GetResult(cx, &result);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    SetError(rv);
    mResultVal.setUndefined();
  } else {
    mError = nullptr;
    mResultVal = result;
  }

  mHaveResultOrErrorCode = true;
}

示例#3

文件： IDBRequest.cpp 项目： FunkyVerb/devtools-window

JSContext*
IDBRequest::GetJSContext()
{
  NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");

  JSContext* cx;

  if (GetScriptOwner()) {
    nsIThreadJSContextStack* cxStack = nsContentUtils::ThreadJSContextStack();
    NS_ASSERTION(cxStack, "Failed to get thread context stack!");

    cx = cxStack->GetSafeJSContext();
    NS_ENSURE_TRUE(cx, nullptr);

    return cx;
  }

  nsresult rv;
  nsIScriptContext* sc = GetContextForEventHandlers(&rv);
  NS_ENSURE_SUCCESS(rv, nullptr);
  NS_ENSURE_TRUE(sc, nullptr);

  cx = sc->GetNativeContext();
  NS_ASSERTION(cx, "Failed to get a context!");

  return cx;
}