/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 SSR
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2005
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Doug Turner <dougt@meer.net>
 *
 * 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 "nsXPCOM.h"
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include "nsIGenericFactory.h"

#include "string.h"
#include "nsNetUtil.h"

#include "nsISSRSupport.h"
#include "nsIStyleSheetService.h"


// TODO make the SSR persistent.
//      auto reload SSR in C.

class nsSSRSupport : public nsISSRSupport
{
public:  
  nsSSRSupport();  
  virtual ~nsSSRSupport();  
  
  NS_DECL_ISUPPORTS
  NS_DECL_NSISSRSUPPORT

  nsCOMPtr<nsIStyleSheetService> m_sss;

  PRBool mUsingSSR;
  PRBool mUsingSiteSSR;
};

nsSSRSupport::nsSSRSupport()  
  : mUsingSiteSSR(PR_FALSE), mUsingSSR(PR_FALSE)
{
  m_sss = do_GetService("@mozilla.org/content/style-sheet-service;1");
}  

nsSSRSupport::~nsSSRSupport()  
{
}

NS_IMPL_ISUPPORTS1(nsSSRSupport, nsISSRSupport)

NS_IMETHODIMP 
nsSSRSupport::GetSSREnabled(PRBool *aSsrEnabled)
{
  *aSsrEnabled = mUsingSSR;
  return NS_OK;
}

NS_IMETHODIMP 
nsSSRSupport::SetSSREnabled(PRBool aSsrEnabled)
{
  if (!m_sss)
    return NS_ERROR_NOT_INITIALIZED;

  nsCOMPtr<nsIURI> uri;
  nsresult rv = NS_NewURI(getter_AddRefs(uri), NS_LITERAL_CSTRING("resource://gre/res/smallScreen.css"));
  if (NS_FAILED(rv))
    return rv;

  if (aSsrEnabled)
    return m_sss->LoadAndRegisterSheet(uri, nsIStyleSheetService::AGENT_SHEET);
  
  return m_sss->UnregisterSheet(uri, nsIStyleSheetService::AGENT_SHEET);
}

NS_IMETHODIMP
nsSSRSupport::GetSiteSSREnabled(PRBool *aSiteSSREnabled)
{
  *aSiteSSREnabled = mUsingSiteSSR;
  return NS_OK;
}

NS_IMETHODIMP nsSSRSupport::SetSiteSSREnabled(PRBool aSiteSSREnabled)
{
  if (!m_sss)
    return NS_ERROR_NOT_INITIALIZED;

  nsCOMPtr<nsIURI> uri;
  nsresult rv = NS_NewURI(getter_AddRefs(uri), NS_LITERAL_CSTRING("resource://gre/res/sites.css"));
  if (NS_FAILED(rv))
    return rv;

  if (aSiteSSREnabled)
    return m_sss->LoadAndRegisterSheet(uri, nsIStyleSheetService::AGENT_SHEET);

  return m_sss->UnregisterSheet(uri, nsIStyleSheetService::AGENT_SHEET);
}


//------------------------------------------------------------------------------
//  XPCOM REGISTRATION BELOW
//------------------------------------------------------------------------------

#define SSRSupport_CID \
{  0x3dc8b3d0, 0xeaff, 0x4904, \
{0x8e, 0x80, 0x99, 0xf8, 0x26, 0x62, 0x96, 0x3a} }

#define SSRSupport_ContractID "@mozilla.org/ssr;1"

NS_GENERIC_FACTORY_CONSTRUCTOR(nsSSRSupport)


static const nsModuleComponentInfo components[] =
{
  { "SoftKeyBoardService", 
    SSRSupport_CID, 
    SSRSupport_ContractID,
    nsSSRSupportConstructor,
  }
  
};

NS_IMPL_NSGETMODULE(SSRModule, components)