/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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 "nsAutoWindowStateHelper.h"

#include "mozilla/dom/Event.h"

#include "nsIDocument.h"

#include "nsIDOMWindow.h"

#include "nsPIDOMWindow.h"

#include "nsString.h"

using namespace mozilla;

using namespace mozilla::dom;

/****************************************************************

 ****************** nsAutoWindowStateHelper *********************

 ****************************************************************/

nsAutoWindowStateHelper::nsAutoWindowStateHelper(nsPIDOMWindowOuter* aWindow)

  : mWindow(aWindow)

  , mDefaultEnabled(DispatchEventToChrome("DOMWillOpenModalDialog"))

{

  if (mWindow) {

    mWindow->EnterModalState();

  }

}

nsAutoWindowStateHelper::~nsAutoWindowStateHelper()

{

  if (mWindow) {

    mWindow->LeaveModalState();

  }

  if (mDefaultEnabled) {

    DispatchEventToChrome("DOMModalDialogClosed");

  }

}

bool

nsAutoWindowStateHelper::DispatchEventToChrome(const char* aEventName)

{

  // XXXbz should we skip dispatching the event if the inner changed?

  // That is, should we store both the inner and the outer?

  if (!mWindow) {

    return true;

  }

  // The functions of nsContentUtils do not provide the required behavior,

  // so the following is inlined.

  nsIDocument* doc = mWindow->GetExtantDoc();

  if (!doc) {

    return true;

  }

  ErrorResult rv;

  RefPtr<Event> event = doc->CreateEvent(NS_LITERAL_STRING("Events"),

                                         CallerType::System, rv);

  if (rv.Failed()) {

    rv.SuppressException();

    return false;

  }

  event->InitEvent(NS_ConvertASCIItoUTF16(aEventName), true, true);

  event->SetTrusted(true);

  event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;

  nsCOMPtr<EventTarget> target = do_QueryInterface(mWindow);

  bool defaultActionEnabled =

    target->DispatchEvent(*event, CallerType::System, IgnoreErrors());

  return defaultActionEnabled;

}