/*

 * Copyright (C) 2010 Google 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:

 *

 *     * Redistributions of source code must retain the above copyright

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

 *     * 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.

 *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT

 * OWNER 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 "DebuggerAgentImpl.h"

#include "DebuggerAgentManager.h"

#include "Document.h"

#include "Frame.h"

#include "Page.h"

#include "ScriptDebugServer.h"

#include "V8Binding.h"

#include "WebDevToolsAgentImpl.h"

#include "WebViewImpl.h"

#include <wtf/HashSet.h>

#include <wtf/RefPtr.h>

#include <wtf/Vector.h>

using WebCore::DOMWindow;

using WebCore::Document;

using WebCore::Frame;

using WebCore::Page;

using WebCore::String;

namespace WebKit {

DebuggerAgentImpl::DebuggerAgentImpl(

    WebViewImpl* webViewImpl,

    DebuggerAgentDelegate* delegate,

    WebDevToolsAgentImpl* webdevtoolsAgent)

    : m_webViewImpl(webViewImpl)

    , m_delegate(delegate)

    , m_webdevtoolsAgent(webdevtoolsAgent)

    , m_autoContinueOnException(false)

{

    DebuggerAgentManager::debugAttach(this);

}

DebuggerAgentImpl::~DebuggerAgentImpl()

{

    DebuggerAgentManager::debugDetach(this);

}

void DebuggerAgentImpl::getContextId()

{

    m_delegate->setContextId(m_webdevtoolsAgent->hostId());

}

void DebuggerAgentImpl::processDebugCommands()

{

    DebuggerAgentManager::UtilityContextScope utilityScope;

    v8::Debug::ProcessDebugMessages();

}

void DebuggerAgentImpl::debuggerOutput(const String& command)

{

    m_delegate->debuggerOutput(command);

    m_webdevtoolsAgent->forceRepaint();

}

String DebuggerAgentImpl::executeUtilityFunction(

    v8::Handle<v8::Context> context,

    int callId,

    const char* object,

    const String &functionName,

    const String& jsonArgs,

    bool async,

    String* exception)

{

    v8::HandleScope scope;

    ASSERT(!context.IsEmpty());

    if (context.IsEmpty()) {

        *exception = "No window context.";

        return "";

    }

    v8::Context::Scope contextScope(context);

    DebuggerAgentManager::UtilityContextScope utilityScope;

    v8::Handle<v8::Object> dispatchObject = v8::Handle<v8::Object>::Cast(

        context->Global()->Get(v8::String::New(object)));

    v8::Handle<v8::Value> dispatchFunction = dispatchObject->Get(v8::String::New("dispatch"));

    ASSERT(dispatchFunction->IsFunction());

    v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(dispatchFunction);

    v8::Handle<v8::String> functionNameWrapper = v8::Handle<v8::String>(

        v8::String::New(functionName.utf8().data()));

    v8::Handle<v8::String> jsonArgsWrapper = v8::Handle<v8::String>(

        v8::String::New(jsonArgs.utf8().data()));

    v8::Handle<v8::Number> callIdWrapper = v8::Handle<v8::Number>(

        v8::Number::New(async ? callId : 0));

    v8::Handle<v8::Value> args[] = {

        functionNameWrapper,

        jsonArgsWrapper,

        callIdWrapper

    };

    v8::TryCatch tryCatch;

    v8::Handle<v8::Value> resObj = function->Call(context->Global(), 3, args);

    if (tryCatch.HasCaught()) {

        v8::Local<v8::Message> message = tryCatch.Message();

        if (message.IsEmpty())

            *exception = "Unknown exception";

        else

            *exception = WebCore::toWebCoreString(message->Get());

        return "";

    }

    return WebCore::toWebCoreStringWithNullCheck(resObj);

}

WebCore::Page* DebuggerAgentImpl::page()

{

    return m_webViewImpl->page();

}

} // namespace WebKit