storage/mozStorageAsyncStatementJSHelper.h
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/. */

#ifndef mozilla_storage_mozStorageAsyncStatementJSHelper_h_
#define mozilla_storage_mozStorageAsyncStatementJSHelper_h_

#include "nsIXPCScriptable.h"
#include "nsIXPConnect.h"

namespace mozilla {
namespace storage {

class AsyncStatement;
class AsyncStatementParams;

/**
 * A modified version of StatementJSHelper that only exposes the async-specific
 * 'params' helper.  We do not expose 'row' or 'step' as they do not apply to
 * us.
 */
class AsyncStatementJSHelper : public nsIXPCScriptable {
 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIXPCSCRIPTABLE

 private:
  nsresult getParams(AsyncStatement *, JSContext *, JSObject *, JS::Value *);
};

/**
 * Wrapper used to clean up the references JS helpers hold to the statement.
 * For cycle-avoidance reasons they do not hold reference-counted references,
 * so it is important we do this.
 */
class AsyncStatementParamsHolder final : public nsISupports {
 public:
  NS_DECL_ISUPPORTS

  explicit AsyncStatementParamsHolder(AsyncStatementParams *aParams)
      : mParams(aParams) {}

  AsyncStatementParams *Get() const {
    MOZ_ASSERT(mParams);
    return mParams;
  }

 private:
  virtual ~AsyncStatementParamsHolder();

  RefPtr<AsyncStatementParams> mParams;
};

}  // namespace storage
}  // namespace mozilla

#endif  // mozilla_storage_mozStorageAsyncStatementJSHelper_h_