storage/mozStorageStatementJSHelper.h
author Drew Willcoxon <adw@mozilla.com>
Fri, 09 Mar 2018 18:54:17 -0800
changeset 766943 c61f5f5ead48c78a80c80db5c489bdc7cfaf8175
parent 652109 df5b4f5fe775d341647f85abcf9a0ca0aa573a67
child 693329 78f6394c884cc4d87c5ac188ba4abeec314813a4
child 694109 98e2b4ee9775a2a2b5cc1bb8a390bfe901814f38
permissions -rw-r--r--
Back out bug 1426216 (show search suggestions above history in urlbar in some cases) and follow-ups on release. r=Mossop, a=ritu There are four bugs that need to be backed out: 1. https://hg.mozilla.org/releases/mozilla-release/rev/152720a4efe7 (bug 1432716) 2. https://hg.mozilla.org/releases/mozilla-release/rev/84a24eb373fa (bug 1432263) 3. https://hg.mozilla.org/releases/mozilla-release/rev/4d423fdc33dd (bug 1429974) 4. https://hg.mozilla.org/releases/mozilla-release/rev/440dbdb51f94 (bug 1426216) The original bug implementing the problematic feature (pref migration + UI) is 4, and the others are improvements to it.

/* -*- 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 MOZSTORAGESTATEMENTJSHELPER_H
#define MOZSTORAGESTATEMENTJSHELPER_H

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

class Statement;

namespace mozilla {
namespace storage {

class StatementParams;
class StatementRow;

class StatementJSHelper : public nsIXPCScriptable
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIXPCSCRIPTABLE

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

/**
 * Wrappers 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 StatementParamsHolder final: public nsISupports {
public:
  NS_DECL_ISUPPORTS

  explicit StatementParamsHolder(StatementParams* aParams)
    : mParams(aParams)
  {
  }

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

private:
  virtual ~StatementParamsHolder();

  RefPtr<StatementParams> mParams;
};

class StatementRowHolder final: public nsISupports {
public:
  NS_DECL_ISUPPORTS

  explicit StatementRowHolder(StatementRow* aRow)
    : mRow(aRow)
  {
  }

  StatementRow* Get() const {
    MOZ_ASSERT(mRow);
    return mRow;
  }

private:
  virtual ~StatementRowHolder();

  RefPtr<StatementRow> mRow;
};

} // namespace storage
} // namespace mozilla

#endif // MOZSTORAGESTATEMENTJSHELPER_H