storage/mozStorageAsyncStatementJSHelper.cpp
author alwu <alwu@mozilla.com>
Mon, 07 Jan 2019 19:57:48 +0000
changeset 512757 0e229bbdaae5c8fa9f83796c628a4fdf88f057ba
parent 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1513039 - part5 : log warning when autoplay is blocked. r=cpearce,karlt Wrap 'nsContentUtils::ReportToConsole()' to reduce necessary input parameters and call it when we need to log error or warning message. Show the warning when autoplay is blocked. For web audio, this restores the console messages removed in part4 and also reports the same message when the AudioContext is blocked in the constructor. Differential Revision: https://phabricator.services.mozilla.com/D14330

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
 * 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/. */

#include "nsIXPConnect.h"
#include "mozStorageAsyncStatement.h"
#include "mozStorageService.h"

#include "nsMemory.h"
#include "nsString.h"
#include "nsServiceManagerUtils.h"

#include "mozStorageAsyncStatementJSHelper.h"

#include "mozStorageAsyncStatementParams.h"

#include "jsapi.h"

#include "xpc_make_class.h"

namespace mozilla {
namespace storage {

////////////////////////////////////////////////////////////////////////////////
//// AsyncStatementJSHelper

nsresult AsyncStatementJSHelper::getParams(AsyncStatement *aStatement,
                                           JSContext *aCtx, JSObject *aScopeObj,
                                           JS::Value *_params) {
  MOZ_ASSERT(NS_IsMainThread());

#ifdef DEBUG
  int32_t state;
  (void)aStatement->GetState(&state);
  NS_ASSERTION(state == mozIStorageAsyncStatement::MOZ_STORAGE_STATEMENT_READY,
               "Invalid state to get the params object - all calls will fail!");
#endif

  JS::RootedObject scope(aCtx, aScopeObj);

  if (!aStatement->mStatementParamsHolder) {
    dom::GlobalObject global(aCtx, scope);
    if (global.Failed()) {
      return NS_ERROR_UNEXPECTED;
    }

    nsCOMPtr<nsPIDOMWindowInner> window =
        do_QueryInterface(global.GetAsSupports());

    RefPtr<AsyncStatementParams> params(
        new AsyncStatementParams(window, aStatement));
    NS_ENSURE_TRUE(params, NS_ERROR_OUT_OF_MEMORY);

    RefPtr<AsyncStatementParamsHolder> paramsHolder =
        new AsyncStatementParamsHolder(params);
    NS_ENSURE_TRUE(paramsHolder, NS_ERROR_OUT_OF_MEMORY);

    aStatement->mStatementParamsHolder =
        new nsMainThreadPtrHolder<AsyncStatementParamsHolder>(
            "Statement::mStatementParamsHolder", paramsHolder);
  }

  RefPtr<AsyncStatementParams> params(
      aStatement->mStatementParamsHolder->Get());
  JSObject *obj = params->WrapObject(aCtx, nullptr);
  if (!obj) {
    return NS_ERROR_UNEXPECTED;
  }

  _params->setObject(*obj);
  return NS_OK;
}

NS_IMETHODIMP_(MozExternalRefCountType) AsyncStatementJSHelper::AddRef() {
  return 2;
}
NS_IMETHODIMP_(MozExternalRefCountType) AsyncStatementJSHelper::Release() {
  return 1;
}
NS_INTERFACE_MAP_BEGIN(AsyncStatementJSHelper)
  NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

////////////////////////////////////////////////////////////////////////////////
//// nsIXPCScriptable

#define XPC_MAP_CLASSNAME AsyncStatementJSHelper
#define XPC_MAP_QUOTED_CLASSNAME "AsyncStatementJSHelper"
#define XPC_MAP_FLAGS \
  (XPC_SCRIPTABLE_WANT_RESOLVE | XPC_SCRIPTABLE_ALLOW_PROP_MODS_DURING_RESOLVE)
#include "xpc_map_end.h"

NS_IMETHODIMP
AsyncStatementJSHelper::Resolve(nsIXPConnectWrappedNative *aWrapper,
                                JSContext *aCtx, JSObject *aScopeObj, jsid aId,
                                bool *resolvedp, bool *_retval) {
  if (!JSID_IS_STRING(aId)) return NS_OK;

  // Cast to async via mozI* since direct from nsISupports is ambiguous.
  JS::RootedObject scope(aCtx, aScopeObj);
  JS::RootedId id(aCtx, aId);
  mozIStorageAsyncStatement *iAsyncStmt =
      static_cast<mozIStorageAsyncStatement *>(aWrapper->Native());
  AsyncStatement *stmt = static_cast<AsyncStatement *>(iAsyncStmt);

#ifdef DEBUG
  {
    nsISupports *supp = aWrapper->Native();
    nsCOMPtr<mozIStorageAsyncStatement> isStatement(do_QueryInterface(supp));
    NS_ASSERTION(isStatement, "How is this not an async statement?!");
  }
#endif

  if (::JS_FlatStringEqualsAscii(JSID_TO_FLAT_STRING(id), "params")) {
    JS::RootedValue val(aCtx);
    nsresult rv = getParams(stmt, aCtx, scope, val.address());
    NS_ENSURE_SUCCESS(rv, rv);
    *_retval = ::JS_DefinePropertyById(aCtx, scope, id, val, JSPROP_RESOLVING);
    *resolvedp = true;
    return NS_OK;
  }

  return NS_OK;
}

////////////////////////////////////////////////////////////////////////////////
//// AsyncStatementParamsHolder

NS_IMPL_ISUPPORTS0(AsyncStatementParamsHolder);

AsyncStatementParamsHolder::~AsyncStatementParamsHolder() {
  MOZ_ASSERT(NS_IsMainThread());
  // We are considered dead at this point, so any wrappers for row or params
  // need to lose their reference to the statement.
  mParams->mStatement = nullptr;
}

}  // namespace storage
}  // namespace mozilla