/*

 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#include "config.h"

#include "WebKitDLL.h"

#include "CFDictionaryPropertyBag.h"

#include "MarshallingHelpers.h"

#include <initguid.h>

// {675E712B-8253-4121-A1F0-6A804D095668}

DEFINE_GUID(IID_CFDictionaryPropertyBag, 0x675e712b, 0x8253, 0x4121, 0xa1, 0xf0, 0x6a, 0x80, 0x4d, 0x9, 0x56, 0x68);

// CFDictionaryPropertyBag -----------------------------------------------

CFDictionaryPropertyBag::CFDictionaryPropertyBag()

: m_refCount(1)

{

}

CFDictionaryPropertyBag* CFDictionaryPropertyBag::createInstance()

{

    CFDictionaryPropertyBag* instance = new CFDictionaryPropertyBag();

    return instance;

}

void CFDictionaryPropertyBag::setDictionary(CFMutableDictionaryRef dictionary)

{

    m_dictionary = dictionary;

}

CFMutableDictionaryRef CFDictionaryPropertyBag::dictionary() const

{

    return m_dictionary.get();

}

// IUnknown -------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE CFDictionaryPropertyBag::QueryInterface(REFIID riid, void** ppvObject)

{

    *ppvObject = 0;

    if (IsEqualGUID(riid, IID_IUnknown))

        *ppvObject = static_cast<IPropertyBag*>(this);

    else if (IsEqualGUID(riid, IID_IPropertyBag))

        *ppvObject = static_cast<IPropertyBag*>(this);

    else if (IsEqualGUID(riid, IID_CFDictionaryPropertyBag))

        *ppvObject = this;

    else

        return E_NOINTERFACE;

    AddRef();

    return S_OK;

}

ULONG STDMETHODCALLTYPE CFDictionaryPropertyBag::AddRef(void)

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE CFDictionaryPropertyBag::Release(void)

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete(this);

    return newRef;

}

// IPropertyBag ------------------------------------------------------------

static bool ConvertCFTypeToVariant(VARIANT* pVar, void* cfObj)

{

    if (!cfObj) {

        V_VT(pVar) = VT_NULL;

        return true;

    }

    else {

        // if caller expects a string, retrieve BSTR from CFStringRef

        if (V_VT(pVar) == VT_BSTR) {

            V_BSTR(pVar) = MarshallingHelpers::CFStringRefToBSTR((CFStringRef) cfObj);

            return true;

        } else if (V_VT(pVar) == VT_I4) {

            V_I4(pVar) = MarshallingHelpers::CFNumberRefToInt((CFNumberRef) cfObj);

            return true;

        } else if (!!(V_VT(pVar)&VT_ARRAY)) {

            if ((V_VT(pVar)&~VT_ARRAY) == VT_BSTR) {

                V_ARRAY(pVar) = MarshallingHelpers::stringArrayToSafeArray((CFArrayRef) cfObj);

                return true;

            } else if ((V_VT(pVar)&~VT_ARRAY) == VT_I4) {

                V_ARRAY(pVar) = MarshallingHelpers::intArrayToSafeArray((CFArrayRef) cfObj);

                return true;

            } else if ((V_VT(pVar)&~VT_ARRAY) == VT_UNKNOWN) {

                V_ARRAY(pVar) = MarshallingHelpers::iunknownArrayToSafeArray((CFArrayRef) cfObj);

                return true;

            }

        }

    }

    return false;

}

static bool ConvertVariantToCFType(VARIANT* pVar, void** cfObj)

{

    if (V_VT(pVar) == VT_NULL) {

        *cfObj = 0;

        return true;

    }

    else {

        // if caller expects a string, retrieve BSTR from CFStringRef

        if (V_VT(pVar) == VT_BSTR) {

            *cfObj = (void*) MarshallingHelpers::BSTRToCFStringRef(V_BSTR(pVar));

            return true;

        } else if (V_VT(pVar) == VT_I4) {

            *cfObj = (void*) MarshallingHelpers::intToCFNumberRef(V_I4(pVar));

            return true;

        } else if (!!(V_VT(pVar)&VT_ARRAY)) {

            if ((V_VT(pVar)&~VT_ARRAY) == VT_BSTR) {

                *cfObj = (void*) MarshallingHelpers::safeArrayToStringArray(V_ARRAY(pVar));

                return true;

            } else if ((V_VT(pVar)&~VT_ARRAY) == VT_I4) {

                *cfObj = (void*) MarshallingHelpers::safeArrayToIntArray(V_ARRAY(pVar));

                return true;

            } else if ((V_VT(pVar)&~VT_ARRAY) == VT_UNKNOWN) {

                *cfObj = (void*) MarshallingHelpers::safeArrayToIUnknownArray(V_ARRAY(pVar));

                return true;

            }

        }

    }

    return false;

}

HRESULT STDMETHODCALLTYPE CFDictionaryPropertyBag::Read(LPCOLESTR pszPropName, VARIANT *pVar, IErrorLog * /*pErrorLog*/)

{

    if (!pszPropName)

        return E_POINTER;

    if (m_dictionary) {

        void* value;

        CFStringRef key = MarshallingHelpers::LPCOLESTRToCFStringRef(pszPropName);

        HRESULT hr = E_FAIL;

        if (CFDictionaryGetValueIfPresent(m_dictionary.get(), key, (const void**) &value)) {

            if (ConvertCFTypeToVariant(pVar, value))

                hr = S_OK;

        } else

            hr = E_INVALIDARG;

        CFRelease(key);

        return hr;

    }

    return E_FAIL;

}

HRESULT STDMETHODCALLTYPE CFDictionaryPropertyBag::Write(LPCOLESTR pszPropName, VARIANT* pVar)

{

    if (!pszPropName || !pVar)

        return E_POINTER;

    if (!m_dictionary) {

        m_dictionary = CFDictionaryCreateMutable(0, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);

    }

    void* cfObj;

    if (ConvertVariantToCFType(pVar, &cfObj)) {

        CFStringRef key = MarshallingHelpers::LPCOLESTRToCFStringRef(pszPropName);

        CFDictionaryAddValue(m_dictionary.get(), key, cfObj);

        // CFDictionaryAddValue should automatically retain the CF objects passed in, so release them here

        CFRelease(key);

        CFRelease(cfObj);

        return S_OK;

    }

    return E_FAIL;

}