/*

 * Copyright (C) 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 "IWebView.h"

#include "IWebPolicyDelegate.h"

#include "WebActionPropertyBag.h"

#include "WebElementPropertyBag.h"

#include "COMPtr.h"

#pragma warning(push, 0)

#include <WebCore/BString.h>

#include <WebCore/EventHandler.h>

#include <WebCore/MouseEvent.h>

#include <WebCore/HitTestResult.h>

#pragma warning(pop)

using namespace WebCore;

// WebActionPropertyBag ------------------------------------------------

WebActionPropertyBag::WebActionPropertyBag(const NavigationAction& action, Frame* frame)

    : m_refCount(0)

    , m_action(action) 

    , m_frame(frame)

{

}

WebActionPropertyBag::~WebActionPropertyBag()

{

}

WebActionPropertyBag* WebActionPropertyBag::createInstance(const NavigationAction& action, Frame* frame)

{

    WebActionPropertyBag* instance = new WebActionPropertyBag(action, frame); 

    instance->AddRef();

    return instance;

}

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

HRESULT STDMETHODCALLTYPE WebActionPropertyBag::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 WebActionPropertyBag::AddRef(void)

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE WebActionPropertyBag::Release(void)

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete this;

    return newRef;

}

static bool isEqual(LPCWSTR s1, LPCWSTR s2)

{

    return !wcscmp(s1, s2);

}

static const MouseEvent* findMouseEvent(const Event* event)

{

    for (const Event* e = event; e; e = e->underlyingEvent())

        if (e->isMouseEvent())

            return static_cast<const MouseEvent*>(e);

    return 0;

}

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

{

    if (!pszPropName)

        return E_POINTER;

    VariantClear(pVar);

    if (isEqual(pszPropName, WebActionNavigationTypeKey)) {

        V_VT(pVar) = VT_I4;

        V_I4(pVar) = m_action.type();

        return S_OK;

    } else if (isEqual(pszPropName, WebActionElementKey)) {

        if (const MouseEvent* mouseEvent = findMouseEvent(m_action.event())) {

            IntPoint point(mouseEvent->clientX(), mouseEvent->clientY());

            COMPtr<WebElementPropertyBag> elementPropertyBag;

            elementPropertyBag.adoptRef(WebElementPropertyBag::createInstance(m_frame->eventHandler()->hitTestResultAtPoint(point, false)));

            V_VT(pVar) = VT_UNKNOWN;

            elementPropertyBag->QueryInterface(IID_IUnknown, (void**)V_UNKNOWNREF(pVar));

            return S_OK;

        }

    } else if (isEqual(pszPropName, WebActionButtonKey)) {

        if (const MouseEvent* mouseEvent = findMouseEvent(m_action.event())) {

            V_VT(pVar) = VT_I4;

            V_I4(pVar) = mouseEvent->button();

            return S_OK;

        }

    } else if (isEqual(pszPropName, WebActionOriginalURLKey)) {

        V_VT(pVar) = VT_BSTR;

        V_BSTR(pVar) = BString(m_action.URL().url()).release();

        return S_OK;

    } else if (isEqual(pszPropName, WebActionModifierFlagsKey)) {

        if (const UIEventWithKeyState* keyEvent = findEventWithKeyState(const_cast<Event*>(m_action.event()))) {

            int modifiers = 0;

            if (keyEvent->ctrlKey())

                modifiers |= MK_CONTROL;

            if (keyEvent->shiftKey())

                modifiers |= MK_SHIFT;

            if (keyEvent->altKey())

                modifiers |= MK_ALT;

            V_VT(pVar) = VT_I4;

            V_I4(pVar) = modifiers;

            return S_OK;

        }

    }

    return E_INVALIDARG;

}

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

{

    if (!pszPropName || !pVar)

        return E_POINTER;

    VariantClear(pVar);

    return E_FAIL;

}