/*

 * 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 "WebDebugProgram.h"

#include "WebKitStatistics.h"

#include "WebView.h"

#include <wtf/Vector.h>

static Vector<IWebView*> sViews;

// EnumViews ------------------------------------------------------------------

class EnumViews : public IEnumVARIANT

{

public:

    EnumViews() : m_refCount(1), m_current(sViews.begin()) { }

    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject)

    {

        *ppvObject = 0;

        if (IsEqualGUID(riid, IID_IUnknown) || IsEqualGUID(riid, IID_IEnumVARIANT))

            *ppvObject = this;

        else

            return E_NOINTERFACE;

        AddRef();

        return S_OK;

    }

    virtual ULONG STDMETHODCALLTYPE AddRef(void)

    {

        return ++m_refCount;

    }

    virtual ULONG STDMETHODCALLTYPE Release(void)

    {

        ULONG newRef = --m_refCount;

        if (!newRef)

            delete(this);

        return newRef;

    }

    virtual HRESULT STDMETHODCALLTYPE Next(ULONG celt, VARIANT *rgVar, ULONG *pCeltFetched)

    {

        if (pCeltFetched)

            *pCeltFetched = 0;

        if (!rgVar)

            return E_POINTER;

        VariantInit(rgVar);

        if (!celt || celt > 1)

            return S_FALSE;

        if (m_current == sViews.end())

            return S_FALSE;

        IUnknown* unknown;

        HRESULT hr = (*m_current++)->QueryInterface(IID_IUnknown, (void**)&unknown);

        if (FAILED(hr))

            return hr;

        V_VT(rgVar) = VT_UNKNOWN;

        V_UNKNOWN(rgVar) = unknown;

        if (pCeltFetched)

            *pCeltFetched = 1;

        return S_OK;

    }

    virtual HRESULT STDMETHODCALLTYPE Skip(ULONG celt)

    {

        m_current += celt;

        return (m_current != sViews.end()) ? S_OK : S_FALSE;

    }

    virtual HRESULT STDMETHODCALLTYPE Reset(void)

    {

        m_current = sViews.begin();

        return S_OK;

    }

    virtual HRESULT STDMETHODCALLTYPE Clone(IEnumVARIANT**)

    {

        return E_NOTIMPL;

    }

private:

    ULONG m_refCount;

    Vector<IWebView*>::iterator m_current;

};

// WebDebugProgram ------------------------------------------------------------

WebDebugProgram::WebDebugProgram()

: m_refCount(0)

{

    gClassCount++;

}

WebDebugProgram::~WebDebugProgram()

{

    gClassCount--;

}

WebDebugProgram* WebDebugProgram::createInstance()

{

    WebDebugProgram* instance = new WebDebugProgram;

    instance->AddRef();

    return instance;

}

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

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

{

    *ppvObject = 0;

    if (IsEqualGUID(riid, IID_IUnknown))

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

    else if (IsEqualGUID(riid, IID_IWebDebugProgram))

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

    else

        return E_NOINTERFACE;

    AddRef();

    return S_OK;

}

ULONG STDMETHODCALLTYPE WebDebugProgram::AddRef(void)

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE WebDebugProgram::Release(void)

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete(this);

    return newRef;

}

void WebDebugProgram::viewAdded(IWebView* view)

{

    sViews.append(view);

}

void WebDebugProgram::viewRemoved(IWebView* view)

{

    Vector<IWebView*>::iterator end = sViews.end();

    int i=0;

    for (Vector<IWebView*>::iterator it = sViews.begin(); it != end; ++it, ++i) {

        if (*it == view) {

            sViews.remove(i);

            break;

        }

    }

}

// IWebDebugProgram -----------------------------------------------------------

HRESULT STDMETHODCALLTYPE WebDebugProgram::attach( void)

{

    return S_OK;

}

HRESULT STDMETHODCALLTYPE WebDebugProgram::detach( void)

{

    return S_OK;

}

HRESULT STDMETHODCALLTYPE WebDebugProgram::statistics( 

    /* [retval][out] */ IWebKitStatistics **statistics)

{

    if (!statistics)

        return E_POINTER;

    *statistics = WebKitStatistics::createInstance();

    return S_OK;

}

HRESULT STDMETHODCALLTYPE WebDebugProgram::webViews( 

    /* [retval][out] */ IEnumVARIANT** enumViews)

{

    if (!enumViews)

        return E_POINTER;

    *enumViews = new EnumViews;

    return S_OK;

}