/*

 * 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. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "DumpRenderTree.h"

#include "WorkQueueItem.h"

#include <WebCore/COMPtr.h>

#include <WebKit/IWebFrame.h>

#include <WebKit/IWebURLRequest.h>

#include <WebKit/IWebView.h>

#include <WebKit/WebKit.h>

#include <JavaScriptCore/JSStringRef.h>

#include <JavaScriptCore/JSStringRefCF.h>

#include <JavaScriptCore/RetainPtr.h>

#include <wtf/Vector.h>

#include <string>

using std::wstring;

static wstring jsStringRefToWString(JSStringRef jsStr)

{

    size_t length = JSStringGetLength(jsStr);

    Vector<WCHAR> buffer(length + 1);

    memcpy(buffer.data(), JSStringGetCharactersPtr(jsStr), length * sizeof(WCHAR));

    buffer[length] = '\0';

    return buffer.data();

}

void LoadItem::invoke() const

{

    wstring targetString = jsStringRefToWString(target());

    COMPtr<IWebFrame> targetFrame;

    if (targetString.empty())

        targetFrame = frame;

    else {

        BSTR targetBSTR = SysAllocString(targetString.c_str());

        bool failed = FAILED(frame->findFrameNamed(targetBSTR, &targetFrame));

        SysFreeString(targetBSTR);

        if (failed)

            return;

    }

    COMPtr<IWebURLRequest> request;

    if (FAILED(CoCreateInstance(CLSID_WebURLRequest, 0, CLSCTX_ALL, IID_IWebURLRequest, (void**)&request)))

        return;

    wstring urlString = jsStringRefToWString(url());

    BSTR urlBSTR = SysAllocString(urlString.c_str());

    bool failed = FAILED(request->initWithURL(urlBSTR, WebURLRequestUseProtocolCachePolicy, 60));

    SysFreeString(urlBSTR);

    if (failed)

        return;

    targetFrame->loadRequest(request.get());

}

void ReloadItem::invoke() const

{

    COMPtr<IWebView> webView;

    if (FAILED(frame->webView(&webView)))

        return;

    COMPtr<IWebIBActions> webActions;

    if (SUCCEEDED(webView->QueryInterface(&webActions)))

        webActions->reload(0);

}

void ScriptItem::invoke() const

{

    COMPtr<IWebView> webView;

    if (FAILED(frame->webView(&webView)))

        return;

    wstring scriptString = jsStringRefToWString(script());

    BSTR result;

    BSTR scriptBSTR = SysAllocString(scriptString.c_str());

    webView->stringByEvaluatingJavaScriptFromString(scriptBSTR, &result);

    SysFreeString(result);

    SysFreeString(scriptBSTR);

}

void BackForwardItem::invoke() const

{

    COMPtr<IWebView> webView;

    if (FAILED(frame->webView(&webView)))

        return;

    BOOL result;

    if (m_howFar == 1) {

        webView->goForward(&result);

        return;

    }

    if (m_howFar == -1) {

        webView->goBack(&result);

        return;

    }

    COMPtr<IWebBackForwardList> bfList;

    if (FAILED(webView->backForwardList(&bfList)))

        return;

    COMPtr<IWebHistoryItem> item;

    if (FAILED(bfList->itemAtIndex(m_howFar, &item)))

        return;

    webView->goToBackForwardItem(item.get(), &result);

}