/* -*- 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Conrad Carlen <ccarlen@netscape.com>
 *   Markus Stange <mstange@themasta.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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 "nsPrintSettingsX.h"
#include "nsObjCExceptions.h"

#include "plbase64.h"
#include "plstr.h"

#include "nsCocoaUtils.h"

#include "mozilla/Preferences.h"

using namespace mozilla;

#define MAC_OS_X_PAGE_SETUP_PREFNAME    "print.macosx.pagesetup-2"

NS_IMPL_ISUPPORTS_INHERITED1(nsPrintSettingsX, nsPrintSettings, nsPrintSettingsX)

nsPrintSettingsX::nsPrintSettingsX()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

  mPrintInfo = [[NSPrintInfo sharedPrintInfo] copy];

  NS_OBJC_END_TRY_ABORT_BLOCK;
}

nsPrintSettingsX::nsPrintSettingsX(const nsPrintSettingsX& src)
{
  *this = src;
}

nsPrintSettingsX::~nsPrintSettingsX()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

  [mPrintInfo release];

  NS_OBJC_END_TRY_ABORT_BLOCK;
}

nsPrintSettingsX& nsPrintSettingsX::operator=(const nsPrintSettingsX& rhs)
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

  if (this == &rhs) {
    return *this;
  }
  
  nsPrintSettings::operator=(rhs);

  [mPrintInfo release];
  mPrintInfo = [rhs.mPrintInfo copy];

  return *this;

  NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(*this);
}

nsresult nsPrintSettingsX::Init()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

  InitUnwriteableMargin();

  return NS_OK;

  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}

// Should be called whenever the page format changes.
NS_IMETHODIMP nsPrintSettingsX::InitUnwriteableMargin()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

  PMPaper paper;
  PMPaperMargins paperMargin;
  PMPageFormat pageFormat = GetPMPageFormat();
  ::PMGetPageFormatPaper(pageFormat, &paper);
  ::PMPaperGetMargins(paper, &paperMargin);
  mUnwriteableMargin.top    = NS_POINTS_TO_INT_TWIPS(paperMargin.top);
  mUnwriteableMargin.left   = NS_POINTS_TO_INT_TWIPS(paperMargin.left);
  mUnwriteableMargin.bottom = NS_POINTS_TO_INT_TWIPS(paperMargin.bottom);
  mUnwriteableMargin.right  = NS_POINTS_TO_INT_TWIPS(paperMargin.right);

  return NS_OK;

  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;  
}

void
nsPrintSettingsX::SetCocoaPrintInfo(NSPrintInfo* aPrintInfo)
{
  mPrintInfo = aPrintInfo;
}

NS_IMETHODIMP nsPrintSettingsX::ReadPageFormatFromPrefs()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

  nsCAutoString encodedData;
  nsresult rv =
    Preferences::GetCString(MAC_OS_X_PAGE_SETUP_PREFNAME, &encodedData);
  if (NS_FAILED(rv)) {
    return rv;
  }

  // decode the base64
  char* decodedData = PL_Base64Decode(encodedData.get(), encodedData.Length(), nsnull);
  NSData* data = [NSData dataWithBytes:decodedData length:PL_strlen(decodedData)];
  if (!data)
    return NS_ERROR_FAILURE;

  PMPageFormat newPageFormat;
  OSStatus status = ::PMPageFormatCreateWithDataRepresentation((CFDataRef)data, &newPageFormat);
  if (status == noErr) {
    SetPMPageFormat(newPageFormat);
  }
  InitUnwriteableMargin();

  return NS_OK;

  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}

NS_IMETHODIMP nsPrintSettingsX::WritePageFormatToPrefs()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

  PMPageFormat pageFormat = GetPMPageFormat();
  if (pageFormat == kPMNoPageFormat)
    return NS_ERROR_NOT_INITIALIZED;

  NSData* data = nil;
  OSStatus err = ::PMPageFormatCreateDataRepresentation(pageFormat, (CFDataRef*)&data, kPMDataFormatXMLDefault);
  if (err != noErr)
    return NS_ERROR_FAILURE;

  nsCAutoString encodedData;
  encodedData.Adopt(PL_Base64Encode((char*)[data bytes], [data length], nsnull));
  if (!encodedData.get())
    return NS_ERROR_OUT_OF_MEMORY;

  return Preferences::SetCString(MAC_OS_X_PAGE_SETUP_PREFNAME, encodedData);

  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}

nsresult nsPrintSettingsX::_Clone(nsIPrintSettings **_retval)
{
  NS_ENSURE_ARG_POINTER(_retval);
  *_retval = nsnull;
  
  nsPrintSettingsX *newSettings = new nsPrintSettingsX(*this);
  if (!newSettings)
    return NS_ERROR_FAILURE;
  *_retval = newSettings;
  NS_ADDREF(*_retval);
  return NS_OK;
}

NS_IMETHODIMP nsPrintSettingsX::_Assign(nsIPrintSettings *aPS)
{
  nsPrintSettingsX *printSettingsX = static_cast<nsPrintSettingsX*>(aPS);
  if (!printSettingsX)
    return NS_ERROR_UNEXPECTED;
  *this = *printSettingsX;
  return NS_OK;
}

PMPrintSettings
nsPrintSettingsX::GetPMPrintSettings()
{
  return static_cast<PMPrintSettings>([mPrintInfo PMPrintSettings]);
}

PMPrintSession
nsPrintSettingsX::GetPMPrintSession()
{
  return static_cast<PMPrintSession>([mPrintInfo PMPrintSession]);
}

PMPageFormat
nsPrintSettingsX::GetPMPageFormat()
{
  return static_cast<PMPageFormat>([mPrintInfo PMPageFormat]);
}

void
nsPrintSettingsX::SetPMPageFormat(PMPageFormat aPageFormat)
{
  PMPageFormat oldPageFormat = GetPMPageFormat();
  ::PMCopyPageFormat(aPageFormat, oldPageFormat);
  [mPrintInfo updateFromPMPageFormat];
}