gecko-dev/hal/sandbox/SandboxHal.cpp

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et ft=cpp : */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at:
 * http://www.mozilla.org/MPL/
 *
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Code.
 *
 * The Initial Developer of the Original Code is
 *   The Mozilla Foundation
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Chris Jones <jones.chris.g@gmail.com>
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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#include "Hal.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/hal_sandbox/PHalChild.h"
#include "mozilla/hal_sandbox/PHalParent.h"
#include "mozilla/dom/battery/Types.h"
#include "mozilla/Observer.h"
#include "mozilla/unused.h"

using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::hal;

namespace mozilla {
namespace hal_sandbox {

static PHalChild* sHal;
static PHalChild*
Hal()
{
  if (!sHal) {
    sHal = ContentChild::GetSingleton()->SendPHalConstructor();
  }
  return sHal;
}

void
Vibrate(const nsTArray<uint32>& pattern)
{
  AutoInfallibleTArray<uint32, 8> p(pattern);
  Hal()->SendVibrate(p);
}

void
EnableBatteryNotifications()
{
  Hal()->SendEnableBatteryNotifications();
}

void
DisableBatteryNotifications()
{
  Hal()->SendDisableBatteryNotifications();
}

void
GetCurrentBatteryInformation(BatteryInformation* aBatteryInfo)
{
  Hal()->SendGetCurrentBatteryInformation(aBatteryInfo);
}

class HalParent : public PHalParent
                , public BatteryObserver {
public:
  NS_OVERRIDE virtual bool
  RecvVibrate(const InfallibleTArray<unsigned int>& pattern) {
    // Forward to hal::, not hal_impl::, because we might be a
    // subprocess of another sandboxed process.  The hal:: entry point
    // will do the right thing.
    hal::Vibrate(pattern);
    return true;
  }

  NS_OVERRIDE virtual bool
  RecvEnableBatteryNotifications() {
    hal::RegisterBatteryObserver(this);
    return true;
  }

  NS_OVERRIDE virtual bool
  RecvDisableBatteryNotifications() {
    hal::UnregisterBatteryObserver(this);
    return true;
  }

  NS_OVERRIDE virtual bool
  RecvGetCurrentBatteryInformation(BatteryInformation* aBatteryInfo) {
    hal::GetCurrentBatteryInformation(aBatteryInfo);
    return true;
  }

  void Notify(const BatteryInformation& aBatteryInfo) {
    unused << SendNotifyBatteryChange(aBatteryInfo);
  }
};

class HalChild : public PHalChild {
public:
  NS_OVERRIDE virtual bool
  RecvNotifyBatteryChange(const BatteryInformation& aBatteryInfo) {
    hal::NotifyBatteryChange(aBatteryInfo);
    return true;
  }
};

PHalChild* CreateHalChild() {
  return new HalChild();
}

PHalParent* CreateHalParent() {
  return new HalParent();
}

} // namespace hal_sandbox
} // namespace mozilla