/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * 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.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsAutoWindowStateHelper.h"

#include "nsIDOMWindow.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMEvent.h"
#include "nsIPrivateDOMEvent.h"
#include "nsString.h"

/****************************************************************
 ****************** nsAutoWindowStateHelper *********************
 ****************************************************************/

nsAutoWindowStateHelper::nsAutoWindowStateHelper(nsIDOMWindow *aWindow)
  : mWindow(aWindow),
    mDefaultEnabled(DispatchCustomEvent("DOMWillOpenModalDialog"))
{
  nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(aWindow));

  if (window) {
    mCallerWindow = window->EnterModalState();
  }
}

nsAutoWindowStateHelper::~nsAutoWindowStateHelper()
{
  nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(mWindow));

  if (window) {
    window->LeaveModalState(mCallerWindow);
  }

  if (mDefaultEnabled) {
    DispatchCustomEvent("DOMModalDialogClosed");
  }
}

PRBool
nsAutoWindowStateHelper::DispatchCustomEvent(const char *aEventName)
{
  if (!mWindow) {
    return PR_TRUE;
  }

#ifdef DEBUG
  {
    nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(mWindow));
  }
#endif

  nsCOMPtr<nsIDOMDocument> domdoc;
  mWindow->GetDocument(getter_AddRefs(domdoc));

  nsCOMPtr<nsIDOMEvent> event;

  PRBool defaultActionEnabled = PR_TRUE;

  if (domdoc) {
    domdoc->CreateEvent(NS_LITERAL_STRING("Events"), getter_AddRefs(event));

    nsCOMPtr<nsIPrivateDOMEvent> privateEvent(do_QueryInterface(event));
    if (privateEvent) {
      event->InitEvent(NS_ConvertASCIItoUTF16(aEventName), PR_TRUE, PR_TRUE);

      privateEvent->SetTrusted(PR_TRUE);

      nsCOMPtr<nsIDOMEventTarget> target(do_QueryInterface(mWindow));

      target->DispatchEvent(event, &defaultActionEnabled);
    }
  }

  return defaultActionEnabled;
}

