/*

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

 * Copyright (C) 2009 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:

 *

 *     * 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"

#if ENABLE(NOTIFICATIONS)

#include "Notification.h"

#include "NotificationContents.h"

#include "Document.h"

#include "EventNames.h"

#include "ResourceRequest.h"

#include "ResourceResponse.h"

#include "ThreadableLoader.h"

#include "WorkerContext.h"

namespace WebCore {

Notification::Notification(const KURL& url, ScriptExecutionContext* context, ExceptionCode& ec, NotificationPresenter* provider)

    : ActiveDOMObject(context, this)

    , m_isHTML(true)

    , m_state(Idle)

    , m_presenter(provider)

{

    ASSERT(m_presenter);

    if (m_presenter->checkPermission(context) != NotificationPresenter::PermissionAllowed) {

        ec = SECURITY_ERR;

        return;

    }

    if (url.isEmpty() || !url.isValid()) {

        ec = SYNTAX_ERR;

        return;

    }

    m_notificationURL = url;

}

Notification::Notification(const NotificationContents& contents, ScriptExecutionContext* context, ExceptionCode& ec, NotificationPresenter* provider)

    : ActiveDOMObject(context, this)

    , m_isHTML(false)

    , m_contents(contents)

    , m_state(Idle)

    , m_presenter(provider)

{

    ASSERT(m_presenter);

    if (m_presenter->checkPermission(context) != NotificationPresenter::PermissionAllowed) {

        ec = SECURITY_ERR;

        return;

    }

    if (!contents.icon().isEmpty() && !contents.icon().isValid()) {

        ec = SYNTAX_ERR;

        return;

    }

}

Notification::~Notification() 

{

    if (m_state == Loading) {

        ASSERT_NOT_REACHED();

        cancel();

    }

}

void Notification::show() 

{

#if PLATFORM(QT)

    if (iconURL().isEmpty()) {

        // Set the state before actually showing, because

        // handling of ondisplay may rely on that.

        if (m_state == Idle) {

            m_state = Showing;

            m_presenter->show(this);

        }

    } else

        startLoading();

#else

    // prevent double-showing

    if (m_state == Idle && m_presenter->show(this))

        m_state = Showing;

#endif

}

void Notification::cancel() 

{

    switch (m_state) {

    case Idle:

        break;

    case Loading:

        m_state = Cancelled;

        stopLoading();

        break;

    case Showing:

        m_presenter->cancel(this);

        break;

    case Cancelled:

        break;

    }

}

EventTargetData* Notification::eventTargetData()

{

    return &m_eventTargetData;

}

EventTargetData* Notification::ensureEventTargetData()

{

    return &m_eventTargetData;

}

void Notification::contextDestroyed()

{

    ActiveDOMObject::contextDestroyed();

    if (m_presenter)

        m_presenter->notificationObjectDestroyed(this);

}

void Notification::startLoading()

{

    if (m_state != Idle)

        return;

    setPendingActivity(this);

    m_state = Loading;

    ThreadableLoaderOptions options;

    options.sendLoadCallbacks = false;

    options.sniffContent = false;

    options.forcePreflight = false;

    options.allowCredentials = AllowStoredCredentials;

    options.crossOriginRequestPolicy = AllowCrossOriginRequests;

    m_loader = ThreadableLoader::create(scriptExecutionContext(), this, ResourceRequest(iconURL()), options);

}

void Notification::stopLoading()

{

    m_iconData = 0;

    RefPtr<ThreadableLoader> protect(m_loader);

    m_loader->cancel();

}

void Notification::didReceiveResponse(const ResourceResponse& response)

{

    int status = response.httpStatusCode();

    if (status && (status < 200 || status > 299)) {

        stopLoading();

        return;

    }

    m_iconData = SharedBuffer::create();

}

void Notification::didReceiveData(const char* data, int lengthReceived)

{

    m_iconData->append(data, lengthReceived);

}

void Notification::didFinishLoading(unsigned long)

{

    finishLoading();

}

void Notification::didFail(const ResourceError&)

{

    finishLoading();

}

void Notification::didFailRedirectCheck()

{

    finishLoading();

}

void Notification::didReceiveAuthenticationCancellation(const ResourceResponse&)

{

    finishLoading();

}

void Notification::finishLoading()

{

    if (m_state == Loading) {

        if (m_presenter->show(this))

            m_state = Showing;

    }

    unsetPendingActivity(this);

}

} // namespace WebCore

#endif // ENABLE(NOTIFICATIONS)