pjs/hal/WindowIdentifier.cpp

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * 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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 * 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):
 *   Justin Lebar <justin.lebar@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 "mozilla/dom/ContentChild.h"
#include "WindowIdentifier.h"
#include "nsPIDOMWindow.h"

namespace mozilla {
namespace hal {

WindowIdentifier::WindowIdentifier()
  : mWindow(nsnull)
  , mIsEmpty(true)
{
}

WindowIdentifier::WindowIdentifier(nsIDOMWindow *window)
  : mWindow(window)
  , mIsEmpty(false)
{
  mID.AppendElement(GetWindowID());
}

WindowIdentifier::WindowIdentifier(const nsTArray<uint64> &id, nsIDOMWindow *window)
  : mID(id)
  , mWindow(window)
  , mIsEmpty(false)
{
  mID.AppendElement(GetWindowID());
}

WindowIdentifier::WindowIdentifier(const WindowIdentifier &other)
  : mID(other.mID)
  , mWindow(other.mWindow)
  , mIsEmpty(other.mIsEmpty)
{
}

const InfallibleTArray<uint64>&
WindowIdentifier::AsArray() const
{
  MOZ_ASSERT(!mIsEmpty);
  return mID;
}

bool
WindowIdentifier::HasTraveledThroughIPC() const
{
  MOZ_ASSERT(!mIsEmpty);
  return mID.Length() >= 2;
}

void
WindowIdentifier::AppendProcessID()
{
  MOZ_ASSERT(!mIsEmpty);
  mID.AppendElement(dom::ContentChild::GetSingleton()->GetID());
}

uint64
WindowIdentifier::GetWindowID() const
{
  MOZ_ASSERT(!mIsEmpty);
  nsCOMPtr<nsPIDOMWindow> pidomWindow = do_QueryInterface(mWindow);
  if (!pidomWindow) {
    return uint64(-1);
  }
  return pidomWindow->WindowID();
}

nsIDOMWindow*
WindowIdentifier::GetWindow() const
{
  MOZ_ASSERT(!mIsEmpty);
  return mWindow;
}

} // namespace hal
} // namespace mozilla