/* -*- Mode: C++; tab-width: 4; 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):
 *   Rod Spears <rods@netscape.com>
 *   Conrad Carlen <ccarlen@netscape.com>
 *
 * 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 "nsPrintingPromptService.h"

#include "nsCOMPtr.h"
#include "nsObjCExceptions.h"

#include "nsIPrintingPromptService.h"
#include "nsIFactory.h"
#include "nsIDOMWindow.h"
#include "nsReadableUtils.h"
#include "nsIEmbeddingSiteWindow.h"
#include "nsIServiceManager.h"
#include "nsIWebBrowserChrome.h"
#include "nsIWindowWatcher.h"
#include "nsIPrintSettingsX.h"
#include "nsIDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "nsTArray.h"
#include "nsCRT.h"

#include "nsPDECommon.h"

// Printing Progress Includes
#include "nsPrintProgress.h"
#include "nsPrintProgressParams.h"
#include "nsIWebProgressListener.h"

#import <Carbon/Carbon.h>

//-----------------------------------------------------------------------------
// Static Helpers
//-----------------------------------------------------------------------------

static nsresult LoadPDEPlugIn()
{
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

    static CFPlugInRef gPDEPlugIn = nsnull;

    if (!gPDEPlugIn) {

        CFURLRef pluginsURL = ::CFBundleCopyBuiltInPlugInsURL(CFBundleGetMainBundle());
        if (pluginsURL) {
            CFURLRef thePluginURL = ::CFURLCreateCopyAppendingPathComponent(nsnull,
                                                                          pluginsURL,
                                                                          CFSTR("PrintPDE.plugin"),
                                                                          PR_FALSE);
            if (thePluginURL) {
                gPDEPlugIn = ::CFPlugInCreate(nsnull, thePluginURL);
                ::CFRelease(thePluginURL);
            }
            ::CFRelease(pluginsURL);
        }
    }
    return gPDEPlugIn ? NS_OK : NS_ERROR_FAILURE;

    NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}

static CFDictionaryRef ExtractCustomSettingsDict(PMPrintSettings nativePrintSettings)
{
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

    CFDictionaryRef resultDict = NULL;
    UInt32 bytesNeeded;
    
    OSStatus status = ::PMGetPrintSettingsExtendedData(nativePrintSettings, kAppPrintDialogAppOnlyKey, &bytesNeeded, NULL);
    if (status == noErr) {
        nsAutoTArray<UInt8, 512> dataBuffer;
        if (dataBuffer.SetLength(bytesNeeded)) {           
            status = ::PMGetPrintSettingsExtendedData(nativePrintSettings, kAppPrintDialogAppOnlyKey, &bytesNeeded, dataBuffer.Elements());
            if (status == noErr) {
                CFDataRef xmlData = ::CFDataCreate(kCFAllocatorDefault, dataBuffer.Elements(), bytesNeeded);
                if (xmlData) {
                    resultDict = (CFDictionaryRef)::CFPropertyListCreateFromXMLData(
                                                        kCFAllocatorDefault,
                                                        xmlData,
                                                        kCFPropertyListImmutable,
                                                        NULL);
                    CFRelease(xmlData);
                }
            }
        }
    }
    NS_ASSERTION(resultDict, "Failed to get custom print settings dict");
    return resultDict;

    NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(NULL);
}

static PRBool
GetDictionaryStringValue(CFDictionaryRef aDictionary, CFStringRef aKey, nsAString& aResult)
{
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

    aResult.Truncate();
    CFTypeRef dictValue;
    if ((dictValue = CFDictionaryGetValue(aDictionary, aKey)) &&
        (CFGetTypeID(dictValue) == CFStringGetTypeID()))
    {
        CFIndex stringLen = CFStringGetLength((CFStringRef)dictValue);

        nsAutoTArray<UniChar, 256> stringBuffer;
        if (stringBuffer.SetLength(stringLen + 1)) {
            ::CFStringGetCharacters((CFStringRef)dictValue, CFRangeMake(0, stringLen), stringBuffer.Elements());
            aResult.Assign(stringBuffer.Elements(), stringLen);
            return PR_TRUE;
        }
    }
    return PR_FALSE;

    NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(PR_FALSE);
}

// returns success or failure (not the read value)
static PRBool
GetDictionaryBooleanValue(CFDictionaryRef aDictionary, CFStringRef aKey, PRBool& aResult)
{
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

    aResult = PR_FALSE;
    CFTypeRef dictValue;
    if ((dictValue = CFDictionaryGetValue(aDictionary, aKey)) &&
        (CFGetTypeID(dictValue) == CFBooleanGetTypeID()))
    {
      aResult = CFBooleanGetValue((CFBooleanRef)dictValue);
      return PR_TRUE;
    }
    return PR_FALSE;

    NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(PR_FALSE);
}

static void
SetDictionaryStringValue(CFMutableDictionaryRef aDictionary, CFStringRef aKey, const nsXPIDLString& aValue)
{
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

    CFStringRef cfString = CFStringCreateWithCharacters(NULL, aValue.get(), aValue.Length());
    if (cfString) {
        CFDictionaryAddValue(aDictionary, aKey, cfString);
        CFRelease(cfString);
    }

    NS_OBJC_END_TRY_ABORT_BLOCK;
}

static void
SetDictionaryBooleanvalue(CFMutableDictionaryRef aDictionary, CFStringRef aKey, PRBool aValue)
{
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

    CFDictionaryAddValue(aDictionary, aKey, aValue ? kCFBooleanTrue : kCFBooleanFalse);

    NS_OBJC_END_TRY_ABORT_BLOCK;
}

//*****************************************************************************
// nsPrintingPromptService
//*****************************************************************************   

NS_IMPL_ISUPPORTS2(nsPrintingPromptService, nsIPrintingPromptService, nsIWebProgressListener)

nsPrintingPromptService::nsPrintingPromptService() :
    mWatcher(do_GetService(NS_WINDOWWATCHER_CONTRACTID))
{
}

nsPrintingPromptService::~nsPrintingPromptService()
{
}

nsresult nsPrintingPromptService::Init()
{
    return NS_OK;
}

//*****************************************************************************
// nsPrintingPromptService::nsIPrintingPromptService
//*****************************************************************************   

NS_IMETHODIMP 
nsPrintingPromptService::ShowPrintDialog(nsIDOMWindow *parent, nsIWebBrowserPrint *webBrowserPrint, nsIPrintSettings *printSettings)
{
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

    nsresult rv;
    OSStatus status;
      
    nsCOMPtr<nsIPrintSettingsX> printSettingsX(do_QueryInterface(printSettings));
    if (!printSettingsX)
        return NS_ERROR_NO_INTERFACE;
    
    nsCOMPtr<nsIPrintSettingsX_MOZILLA_1_9_BRANCH> printSettingsX_1_9(do_QueryInterface(printSettings));
    if (!printSettingsX_1_9)
        return NS_ERROR_NO_INTERFACE;
    
    PMPrintSession  printSession;
    rv = printSettingsX->GetNativePrintSession(&printSession);
    if (NS_FAILED(rv))
        return rv;
    
    PMPageFormat    pageFormat = kPMNoPageFormat;
    rv = printSettingsX->GetPMPageFormat(&pageFormat);
    if (NS_FAILED(rv))
        return rv;

    PMPrintSettings nativePrintSettings = kPMNoPrintSettings;
    rv = printSettingsX->GetPMPrintSettings(&nativePrintSettings);
    if (NS_FAILED(rv))
        return rv;
    
    status = ::PMSessionValidatePageFormat(printSession, pageFormat, kPMDontWantBoolean);
    if (status != noErr)
        return NS_ERROR_FAILURE;
        
    // Reset the print settings to their defaults each time. We don't want to remember
    // the last printed page range or whatever. This is expected Mac behavior.
    status = ::PMSessionDefaultPrintSettings(printSession, nativePrintSettings);
    if (status != noErr)
        return NS_ERROR_FAILURE;
        
    ::InitCursor();
        
    rv = ::LoadPDEPlugIn();
    NS_ASSERTION(NS_SUCCEEDED(rv), "LoadPDEPlugIn() failed");
    
    // Set the print job title
    PRUnichar** docTitles;
    PRUint32 titleCount;
    rv = webBrowserPrint->EnumerateDocumentNames(&titleCount, &docTitles);
    if (NS_SUCCEEDED(rv) && titleCount > 0) {
      CFStringRef cfTitleString = CFStringCreateWithCharacters(NULL, docTitles[0], nsCRT::strlen(docTitles[0]));
      if (cfTitleString) {
        ::PMPrintSettingsSetJobName(nativePrintSettings, cfTitleString);
        CFRelease(cfTitleString);
      }
      for (PRInt32 i = titleCount - 1; i >= 0; i--) {
        NS_Free(docTitles[i]);
      }
      NS_Free(docTitles);
      docTitles = NULL;
      titleCount = 0;
    }

    // Create a dictionary and store our settings into it
    CFMutableDictionaryRef dictToPDE = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
                                    (const CFDictionaryKeyCallBacks *)&kCFTypeDictionaryKeyCallBacks,
                                    (const CFDictionaryValueCallBacks *)&kCFTypeDictionaryValueCallBacks);
    NS_ASSERTION(dictToPDE, "Failed to create a CFDictionary for print settings");
    if (dictToPDE) {
        PRBool  isOn;
        PRInt16 howToEnableFrameUI;

        printSettings->GetPrintOptions(nsIPrintSettings::kEnableSelectionRB, &isOn);
        SetDictionaryBooleanvalue(dictToPDE, kPDEKeyHaveSelection, isOn);
        
        printSettings->GetHowToEnableFrameUI(&howToEnableFrameUI);
        if (howToEnableFrameUI == nsIPrintSettings::kFrameEnableAll) {
            CFDictionaryAddValue(dictToPDE, kPDEKeyHaveFrames, kCFBooleanTrue);
            CFDictionaryAddValue(dictToPDE, kPDEKeyHaveFrameSelected, kCFBooleanTrue);
        }
        else if (howToEnableFrameUI == nsIPrintSettings::kFrameEnableAsIsAndEach) {
            CFDictionaryAddValue(dictToPDE, kPDEKeyHaveFrames, kCFBooleanTrue);
            CFDictionaryAddValue(dictToPDE, kPDEKeyHaveFrameSelected, kCFBooleanFalse);
        }
        else {
            CFDictionaryAddValue(dictToPDE, kPDEKeyHaveFrames, kCFBooleanFalse);
            CFDictionaryAddValue(dictToPDE, kPDEKeyHaveFrameSelected, kCFBooleanFalse);
        }

        // get the boolean values
        printSettings->GetShrinkToFit(&isOn);
        SetDictionaryBooleanvalue(dictToPDE, kPDEKeyShrinkToFit, isOn);

        printSettings->GetPrintBGColors(&isOn);
        SetDictionaryBooleanvalue(dictToPDE, kPDEKeyPrintBGColors, isOn);

        printSettings->GetPrintBGImages(&isOn);
        SetDictionaryBooleanvalue(dictToPDE, kPDEKeyPrintBGImages, isOn);

        // read headers
        nsXPIDLString tempString;
        printSettings->GetHeaderStrRight(getter_Copies(tempString));
        SetDictionaryStringValue(dictToPDE, kPDEKeyHeaderRight, tempString);
        
        printSettings->GetHeaderStrCenter(getter_Copies(tempString));
        SetDictionaryStringValue(dictToPDE, kPDEKeyHeaderCenter, tempString);

        printSettings->GetHeaderStrLeft(getter_Copies(tempString));
        SetDictionaryStringValue(dictToPDE, kPDEKeyHeaderLeft, tempString);

        // read footers
        printSettings->GetFooterStrRight(getter_Copies(tempString));
        SetDictionaryStringValue(dictToPDE, kPDEKeyFooterRight, tempString);

        printSettings->GetFooterStrCenter(getter_Copies(tempString));
        SetDictionaryStringValue(dictToPDE, kPDEKeyFooterCenter, tempString);

        printSettings->GetFooterStrLeft(getter_Copies(tempString));
        SetDictionaryStringValue(dictToPDE, kPDEKeyFooterLeft, tempString);
        
        CFDataRef xmlData = CFPropertyListCreateXMLData(kCFAllocatorDefault, dictToPDE);
        NS_ASSERTION(xmlData, "Could not create print settings CFData from CFDictionary");
        if (xmlData) {
            status = ::PMSetPrintSettingsExtendedData(nativePrintSettings, kAppPrintDialogAppOnlyKey, CFDataGetLength(xmlData), (void *)CFDataGetBytePtr(xmlData));
            NS_ASSERTION(status == noErr, "PMSetPrintSettingsExtendedData() failed");
            CFRelease(xmlData);
        }
        CFRelease(dictToPDE);
    }

    Boolean accepted;
    status = ::PMSessionPrintDialog(printSession, nativePrintSettings, pageFormat, &accepted);
    printSettingsX_1_9->CleanUpAfterCarbonDialog();
    
    if (status == noErr && accepted) {
        int pageRange = -1;
        
        CFDictionaryRef dictFromPDE = ExtractCustomSettingsDict(nativePrintSettings);
        if (dictFromPDE) {
            //CFShow(dictFromPDE);
            
            PRBool printSelectionOnly;
            if (GetDictionaryBooleanValue(dictFromPDE, kPDEKeyPrintSelection, printSelectionOnly)) {
                if (printSelectionOnly) {
                    printSettings->SetPrintRange(nsIPrintSettings::kRangeSelection);
                    pageRange = nsIPrintSettings::kRangeSelection;
                }
                else {
                    printSettings->SetPrintRange(nsIPrintSettings::kRangeAllPages);
                    pageRange = nsIPrintSettings::kRangeAllPages;
                }
            }
            
            CFTypeRef dictValue;
            if ((dictValue = CFDictionaryGetValue(dictFromPDE, kPDEKeyPrintFrameType)) &&
                (CFGetTypeID(dictValue) == CFStringGetTypeID())) {
                if (CFEqual(dictValue, kPDEValueFramesAsIs))
                    printSettings->SetPrintFrameType(nsIPrintSettings::kFramesAsIs);
                else if (CFEqual(dictValue, kPDEValueSelectedFrame))
                    printSettings->SetPrintFrameType(nsIPrintSettings::kSelectedFrame);
                else if (CFEqual(dictValue, kPDEValueEachFrameSep))
                    printSettings->SetPrintFrameType(nsIPrintSettings::kEachFrameSep);
            }

            PRBool tempBool;
            if (GetDictionaryBooleanValue(dictFromPDE, kPDEKeyShrinkToFit, tempBool))
                printSettings->SetShrinkToFit(tempBool);
            
            if (GetDictionaryBooleanValue(dictFromPDE, kPDEKeyPrintBGColors, tempBool))
                printSettings->SetPrintBGColors(tempBool);

            if (GetDictionaryBooleanValue(dictFromPDE, kPDEKeyPrintBGImages, tempBool))
                printSettings->SetPrintBGImages(tempBool);

            nsAutoString stringFromDict;
            
            // top headers
            if (GetDictionaryStringValue(dictFromPDE, kPDEKeyHeaderLeft, stringFromDict))
                printSettings->SetHeaderStrLeft(stringFromDict.get());

            if (GetDictionaryStringValue(dictFromPDE, kPDEKeyHeaderCenter, stringFromDict))
                printSettings->SetHeaderStrCenter(stringFromDict.get());

            if (GetDictionaryStringValue(dictFromPDE, kPDEKeyHeaderRight, stringFromDict))
                printSettings->SetHeaderStrRight(stringFromDict.get());

            // bottom footers
            if (GetDictionaryStringValue(dictFromPDE, kPDEKeyFooterLeft, stringFromDict))
                printSettings->SetFooterStrLeft(stringFromDict.get());

            if (GetDictionaryStringValue(dictFromPDE, kPDEKeyFooterCenter, stringFromDict))
                printSettings->SetFooterStrCenter(stringFromDict.get());

            if (GetDictionaryStringValue(dictFromPDE, kPDEKeyFooterRight, stringFromDict))
                printSettings->SetFooterStrRight(stringFromDict.get());
        
            CFRelease(dictFromPDE);
        }
        
        if (pageRange == -1) {
            printSettings->SetPrintRange(nsIPrintSettings::kRangeAllPages);
            pageRange = nsIPrintSettings::kRangeAllPages;
        }

        if (pageRange != nsIPrintSettings::kRangeSelection) {
            UInt32 firstPage, lastPage;
            status = ::PMGetFirstPage(nativePrintSettings, &firstPage);
            if (status == noErr) {
                status = ::PMGetLastPage(nativePrintSettings, &lastPage);
                if (status == noErr && lastPage != LONG_MAX) {
                    printSettings->SetPrintRange(nsIPrintSettings::kRangeSpecifiedPageRange);
                    printSettings->SetStartPageRange(firstPage);
                    printSettings->SetEndPageRange(lastPage);
                }
            }
        }
    }
        
    if (!accepted)
        return NS_ERROR_ABORT;

    if (status != noErr)
        return NS_ERROR_FAILURE;

    return NS_OK;

    NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}

NS_IMETHODIMP 
nsPrintingPromptService::ShowProgress(nsIDOMWindow*            parent, 
                                      nsIWebBrowserPrint*      webBrowserPrint,    // ok to be null
                                      nsIPrintSettings*        printSettings,      // ok to be null
                                      nsIObserver*             openDialogObserver, // ok to be null
                                      PRBool                   isForPrinting,
                                      nsIWebProgressListener** webProgressListener,
                                      nsIPrintProgressParams** printProgressParams,
                                      PRBool*                  notifyOnOpen)
{
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP 
nsPrintingPromptService::ShowPageSetup(nsIDOMWindow *parent, nsIPrintSettings *printSettings, nsIObserver *aObs)
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

  nsCOMPtr<nsIPrintSettingsX> printSettingsX(do_QueryInterface(printSettings));
  if (!printSettingsX)
    return NS_ERROR_NO_INTERFACE;
  
  nsCOMPtr<nsIPrintSettingsX_MOZILLA_1_9_BRANCH> printSettingsX_1_9(do_QueryInterface(printSettings));
  if (!printSettingsX_1_9)
    return NS_ERROR_NO_INTERFACE;
    
  OSStatus status;
    
  PMPrintSession printSession;
  status = ::PMCreateSession(&printSession);
  if (status != noErr)
    return NS_ERROR_FAILURE;
    
  PMPageFormat pageFormat;
  printSettingsX->GetPMPageFormat(&pageFormat);
  if (pageFormat == kPMNoPageFormat) {
    ::PMRelease(printSession);
    return NS_ERROR_FAILURE;
  }
    
  Boolean validated;
  ::PMSessionValidatePageFormat(printSession, pageFormat, &validated);

  ::InitCursor();

  Boolean   accepted = false;
  status = ::PMSessionPageSetupDialog(printSession, pageFormat, &accepted);
  printSettingsX_1_9->CleanUpAfterCarbonDialog();

  OSStatus tempStatus = ::PMRelease(printSession);
  if (status == noErr)
    status = tempStatus;
    
  if (status != noErr)
    return NS_ERROR_FAILURE;    
  if (!accepted)
    return NS_ERROR_ABORT;

  return NS_OK;

  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}

NS_IMETHODIMP 
nsPrintingPromptService::ShowPrinterProperties(nsIDOMWindow *parent, const PRUnichar *printerName, nsIPrintSettings *printSettings)
{
    return NS_ERROR_NOT_IMPLEMENTED;
}


//*****************************************************************************
// nsPrintingPromptService::nsIWebProgressListener
//*****************************************************************************   

NS_IMETHODIMP 
nsPrintingPromptService::OnStateChange(nsIWebProgress *aWebProgress, nsIRequest *aRequest, PRUint32 aStateFlags, nsresult aStatus)
{
    if ((aStateFlags & STATE_STOP) && mWebProgressListener) {
        mWebProgressListener->OnStateChange(aWebProgress, aRequest, aStateFlags, aStatus);
        if (mPrintProgress) 
          mPrintProgress->CloseProgressDialog(PR_TRUE);
        mPrintProgress       = nsnull;
        mWebProgressListener = nsnull;
    }
    return NS_OK;
}

/* void onProgressChange (in nsIWebProgress aWebProgress, in nsIRequest aRequest, in long aCurSelfProgress, in long aMaxSelfProgress, in long aCurTotalProgress, in long aMaxTotalProgress); */
NS_IMETHODIMP 
nsPrintingPromptService::OnProgressChange(nsIWebProgress *aWebProgress, nsIRequest *aRequest, PRInt32 aCurSelfProgress, PRInt32 aMaxSelfProgress, PRInt32 aCurTotalProgress, PRInt32 aMaxTotalProgress)
{
    if (mWebProgressListener) {
      return mWebProgressListener->OnProgressChange(aWebProgress, aRequest, aCurSelfProgress, aMaxSelfProgress, aCurTotalProgress, aMaxTotalProgress);
    }
    return NS_OK;
}

/* void onLocationChange (in nsIWebProgress aWebProgress, in nsIRequest aRequest, in nsIURI location); */
NS_IMETHODIMP 
nsPrintingPromptService::OnLocationChange(nsIWebProgress *aWebProgress, nsIRequest *aRequest, nsIURI *location)
{
    if (mWebProgressListener) {
        return mWebProgressListener->OnLocationChange(aWebProgress, aRequest, location);
    }
    return NS_OK;
}

/* void onStatusChange (in nsIWebProgress aWebProgress, in nsIRequest aRequest, in nsresult aStatus, in wstring aMessage); */
NS_IMETHODIMP 
nsPrintingPromptService::OnStatusChange(nsIWebProgress *aWebProgress, nsIRequest *aRequest, nsresult aStatus, const PRUnichar *aMessage)
{
    if (mWebProgressListener) {
        return mWebProgressListener->OnStatusChange(aWebProgress, aRequest, aStatus, aMessage);
    }
    return NS_OK;
}

/* void onSecurityChange (in nsIWebProgress aWebProgress, in nsIRequest aRequest, in unsigned long state); */
NS_IMETHODIMP 
nsPrintingPromptService::OnSecurityChange(nsIWebProgress *aWebProgress, nsIRequest *aRequest, PRUint32 state)
{
    if (mWebProgressListener) {
        return mWebProgressListener->OnSecurityChange(aWebProgress, aRequest, state);
    }
    return NS_OK;
}
