/*

 * 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 "WebElementPropertyBag.h"

#include "MarshallingHelpers.h"

#include "DOMCoreClasses.h"

#include "WebFrame.h"

#pragma warning(push, 0)

#include <WebCore/Document.h>

#include <WebCore/Frame.h>

#include <WebCore/HitTestResult.h>

#include <WebCore/FrameLoader.h>

#include <WebCore/Image.h>

#include <WebCore/KURL.h>

#pragma warning(pop)

using namespace WebCore;

// WebElementPropertyBag -----------------------------------------------

WebElementPropertyBag::WebElementPropertyBag(const HitTestResult& result)

    : m_result(new HitTestResult(result))

    , m_refCount(0)

{

}

WebElementPropertyBag::~WebElementPropertyBag()

{

}

WebElementPropertyBag* WebElementPropertyBag::createInstance(const HitTestResult& result)

{

    WebElementPropertyBag* instance = new WebElementPropertyBag(result); 

    instance->AddRef();

    return instance;

}

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

HRESULT STDMETHODCALLTYPE WebElementPropertyBag::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

        return E_NOINTERFACE;

    AddRef();

    return S_OK;

}

ULONG STDMETHODCALLTYPE WebElementPropertyBag::AddRef(void)

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE WebElementPropertyBag::Release(void)

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete this;

    return newRef;

}

static bool isEqual(LPCWSTR s1, LPCWSTR s2)

{

    return !wcscmp(s1, s2);

}

static HRESULT convertStringToVariant(VARIANT* pVar, const String& string)

{

    V_VT(pVar) = VT_BSTR;

    V_BSTR(pVar) = SysAllocStringLen(string.characters(), string.length());

    if (string.length() && !V_BSTR(pVar))

        return E_OUTOFMEMORY;

    return S_OK;

}

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

{

    if (!pszPropName)

        return E_POINTER;

    if (!m_result)

        return E_FAIL;

    BSTR key = (BSTR)pszPropName;

    VariantClear(pVar);

    if (isEqual(WebElementDOMNodeKey, key)) {

        IDOMNode* node = DOMNode::createInstance(m_result->innerNonSharedNode());

        V_VT(pVar) = VT_UNKNOWN;

        V_UNKNOWN(pVar) = node;

        return S_OK;

    } else if (isEqual(WebElementFrameKey, key)) {

        if (!(m_result->innerNonSharedNode() && m_result->innerNonSharedNode()->document()

           && m_result->innerNonSharedNode()->document()->frame()))

            return E_FAIL;

        Frame* coreFrame = m_result->innerNonSharedNode()->document()->frame();

        WebFrame* webFrame = static_cast<WebFrame*>(coreFrame->loader()->client());

        IWebFrame* iWebFrame;

        if (FAILED(webFrame->QueryInterface(IID_IWebFrame, (void**)&iWebFrame)))

            return E_FAIL;

        V_VT(pVar) = VT_UNKNOWN;

        V_UNKNOWN(pVar) = iWebFrame;

        return S_OK;

    } else if (isEqual(WebElementImageAltStringKey, key))

        return convertStringToVariant(pVar, m_result->altDisplayString());

    else if (isEqual(WebElementImageKey, key)) {

        V_VT(pVar) = VT_BYREF;

        V_BYREF(pVar) = m_result->image();

        return S_OK;

    } else if (isEqual(WebElementImageRectKey, key)) {

        V_VT(pVar) = VT_ARRAY;

        V_ARRAY(pVar) = MarshallingHelpers::intRectToSafeArray(m_result->boundingBox());

        return S_OK;

    } else if (isEqual(WebElementImageURLKey, key))

        return convertStringToVariant(pVar, m_result->absoluteImageURL().url());

    else if (isEqual(WebElementIsSelectedKey, key)) {

        V_VT(pVar) = VT_BOOL;

        if (m_result->isSelected())

            V_BOOL(pVar) = VARIANT_TRUE;

        else

            V_BOOL(pVar) = VARIANT_FALSE;

        return S_OK;

    } else if (isEqual(WebElementSpellingToolTipKey, key))

        return convertStringToVariant(pVar, m_result->spellingToolTip());

    else if (isEqual(WebElementTitleKey, key))

        return convertStringToVariant(pVar, m_result->title());

    else if (isEqual(WebElementLinkURLKey, key))

        return convertStringToVariant(pVar, m_result->absoluteLinkURL().url());

    else if (isEqual(WebElementLinkTargetFrameKey, key)) {

        if (!m_result->targetFrame())

            return E_FAIL;

        WebFrame* webFrame = kit(m_result->targetFrame());

        IWebFrame* iWebFrame;

        if (FAILED(webFrame->QueryInterface(IID_IWebFrame, (void**)&iWebFrame)))

            return E_FAIL;

        V_VT(pVar) = VT_UNKNOWN;

        V_UNKNOWN(pVar) = iWebFrame;

        return S_OK;

    } else if (isEqual(WebElementLinkTitleKey, key))

        return convertStringToVariant(pVar, m_result->titleDisplayString());

    else if (isEqual(WebElementLinkLabelKey, key))

        return convertStringToVariant(pVar, m_result->textContent());

    else if (isEqual(WebElementIsContentEditableKey, key)) {

        V_VT(pVar) = VT_BOOL;

        if (m_result->isContentEditable())

            V_BOOL(pVar) = VARIANT_TRUE;

        else

            V_BOOL(pVar) = VARIANT_FALSE;

        return S_OK;

    }

    return E_INVALIDARG;

}

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

{

    if (!pszPropName || !pVar)

        return E_POINTER;

    VariantClear(pVar);

    return E_FAIL;

}