/*

 *  Copyright (C) 2000 Harri Porten (porten@kde.org)

 *  Copyright (C) 2006 Jon Shier (jshier@iastate.edu)

 *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reseved.

 *  Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)

 *  Copyright (C) 2009 Google Inc. All rights reseved.

 *

 *  This library is free software; you can redistribute it and/or

 *  modify it under the terms of the GNU Lesser General Public

 *  License as published by the Free Software Foundation; either

 *  version 2 of the License, or (at your option) any later version.

 *

 *  This library is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 *  Lesser General Public License for more details.

 *

 *  You should have received a copy of the GNU Lesser General Public

 *  License along with this library; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301

 *  USA

 */

#include "config.h"

#include "ScheduledAction.h"

#include "DOMWindow.h"

#include "Document.h"

#include "Frame.h"

#include "FrameLoader.h"

#include "JSDOMBinding.h"

#include "JSDOMWindow.h"

#include "JSMainThreadExecState.h"

#include "ScriptController.h"

#include "ScriptExecutionContext.h"

#include "ScriptSourceCode.h"

#include "ScriptValue.h"

#include <runtime/JSLock.h>

#if ENABLE(WORKERS)

#include "JSWorkerContext.h"

#include "WorkerContext.h"

#include "WorkerThread.h"

#endif

using namespace JSC;

namespace WebCore {

PassOwnPtr<ScheduledAction> ScheduledAction::create(ExecState* exec, DOMWrapperWorld* isolatedWorld)

{

    JSValue v = exec->argument(0);

    CallData callData;

    if (getCallData(v, callData) == CallTypeNone) {

        UString string = v.toString(exec);

        if (exec->hadException())

            return 0;

        return new ScheduledAction(ustringToString(string), isolatedWorld);

    }

    return new ScheduledAction(exec, v, isolatedWorld);

}

ScheduledAction::ScheduledAction(ExecState* exec, JSValue function, DOMWrapperWorld* isolatedWorld)

    : m_function(function)

    , m_isolatedWorld(isolatedWorld)

{

    // setTimeout(function, interval, arg0, arg1...).

    // Start at 2 to skip function and interval.

    for (size_t i = 2; i < exec->argumentCount(); ++i)

        m_args.append(exec->argument(i));

}

void ScheduledAction::execute(ScriptExecutionContext* context)

{

    if (context->isDocument())

        execute(static_cast<Document*>(context));

#if ENABLE(WORKERS)

    else {

        ASSERT(context->isWorkerContext());

        execute(static_cast<WorkerContext*>(context));

    }

#else

    ASSERT(context->isDocument());

#endif

}

void ScheduledAction::executeFunctionInContext(JSGlobalObject* globalObject, JSValue thisValue, ScriptExecutionContext* context)

{

    ASSERT(m_function);

    JSLock lock(SilenceAssertionsOnly);

    CallData callData;

    CallType callType = getCallData(m_function.get(), callData);

    if (callType == CallTypeNone)

        return;

    ExecState* exec = globalObject->globalExec();

    MarkedArgumentBuffer args;

    size_t size = m_args.size();

    for (size_t i = 0; i < size; ++i)

        args.append(m_args[i]);

    globalObject->globalData()->timeoutChecker.start();

    if (context->isDocument())

        JSMainThreadExecState::call(exec, m_function, callType, callData, thisValue, args);

    else

        JSC::call(exec, m_function, callType, callData, thisValue, args);

    globalObject->globalData()->timeoutChecker.stop();

    if (exec->hadException())

        reportCurrentException(exec);

}

void ScheduledAction::execute(Document* document)

{

    JSDOMWindow* window = toJSDOMWindow(document->frame(), m_isolatedWorld.get());

    if (!window)

        return;

    RefPtr<Frame> frame = window->impl()->frame();

    if (!frame || !frame->script()->canExecuteScripts(AboutToExecuteScript))

        return;

    frame->script()->setProcessingTimerCallback(true);

    if (m_function) {

        executeFunctionInContext(window, window->shell(), document);

        Document::updateStyleForAllDocuments();

    } else

        frame->script()->executeScriptInWorld(m_isolatedWorld.get(), m_code);

    frame->script()->setProcessingTimerCallback(false);

}

#if ENABLE(WORKERS)

void ScheduledAction::execute(WorkerContext* workerContext)

{

    // In a Worker, the execution should always happen on a worker thread.

    ASSERT(workerContext->thread()->threadID() == currentThread());

    WorkerScriptController* scriptController = workerContext->script();

    if (m_function) {

        JSWorkerContext* contextWrapper = scriptController->workerContextWrapper();

        executeFunctionInContext(contextWrapper, contextWrapper, workerContext);

    } else {

        ScriptSourceCode code(m_code, workerContext->url());

        scriptController->evaluate(code);

    }

}

#endif // ENABLE(WORKERS)

} // namespace WebCore