/**

 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)

 *

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

 * modify it under the terms of the GNU Library 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

 * Library General Public License for more details.

 *

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

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 *

 */

#include "config.h"

#if ENABLE(WML)

#include "WMLDoElement.h"

#include "Attribute.h"

#include "Event.h"

#include "EventNames.h"

#include "HTMLNames.h"

#include "KeyboardEvent.h"

#include "Page.h"

#include "RenderButton.h"

#include "WMLCardElement.h"

#include "WMLDocument.h"

#include "WMLNames.h"

#include "WMLPageState.h"

#include "WMLTaskElement.h"

#include "WMLTimerElement.h"

#include "WMLVariables.h"

namespace WebCore {

using namespace WMLNames;

WMLDoElement::WMLDoElement(const QualifiedName& tagName, Document* doc)

    : WMLElement(tagName, doc)

    , m_task(0)

    , m_isActive(false)

    , m_isNoop(false)

    , m_isOptional(false)

{

}

void WMLDoElement::defaultEventHandler(Event* event)

{

    if (m_isOptional)

        return;

    if (event->type() == eventNames().keypressEvent) {

        WMLElement::defaultEventHandler(event);

        return;

    }

    if (event->type() != eventNames().clickEvent && event->type() != eventNames().keydownEvent)

        return;

    if (event->isKeyboardEvent()

        && static_cast<KeyboardEvent*>(event)->keyIdentifier() != "Enter")

        return;

    if (m_type == "accept" || m_type == "options") {

        if (m_task)

            m_task->executeTask();

    } else if (m_type == "prev") {

        ASSERT(document()->isWMLDocument());

        WMLDocument* document = static_cast<WMLDocument*>(this->document());

        WMLPageState* pageState = wmlPageStateForDocument(document);

        if (!pageState)

            return;

        // Stop the timer of the current card if it is active

        if (WMLCardElement* card = document->activeCard()) {

            if (WMLTimerElement* eventTimer = card->eventTimer())

                eventTimer->stop();

        }

        pageState->page()->goBack();

    } else if (m_type == "reset") {

        WMLPageState* pageState = wmlPageStateForDocument(document());

        if (!pageState)

            return;

        pageState->reset();

    }

}

void WMLDoElement::parseMappedAttribute(Attribute* attr)

{

    if (attr->name() == HTMLNames::typeAttr)

        m_type = parseValueForbiddingVariableReferences(attr->value());

    else if (attr->name() == HTMLNames::nameAttr)

        m_name = parseValueForbiddingVariableReferences(attr->value());

    else if (attr->name() == optionalAttr)

        m_isOptional = (attr->value() == "true");

    else

        WMLElement::parseMappedAttribute(attr);

}

void WMLDoElement::insertedIntoDocument()

{

    WMLElement::insertedIntoDocument();

    // Spec: An unspecified 'name' defaults to the value of the 'type' attribute.

    if (!hasAttribute(HTMLNames::nameAttr))

        m_name = m_type;

    Node* parent = parentNode();

    if (!parent || !parent->isWMLElement())

        return;

    if (WMLEventHandlingElement* eventHandlingElement = toWMLEventHandlingElement(static_cast<WMLElement*>(parent)))

        eventHandlingElement->registerDoElement(this, document());

}

void WMLDoElement::removedFromDocument()

{

    Node* parent = parentNode();

    if (parent  && parent->isWMLElement()) {

        if (WMLEventHandlingElement* eventHandlingElement = toWMLEventHandlingElement(static_cast<WMLElement*>(parent)))

            eventHandlingElement->deregisterDoElement(this);

    }

    WMLElement::removedFromDocument();

}

void WMLDoElement::attach()

{

    WMLElement::attach();

    // The call to updateFromElement() needs to go after the call through

    // to the base class's attach() because that can sometimes do a close

    // on the renderer.

    if (renderer())

        renderer()->updateFromElement();

}

RenderObject* WMLDoElement::createRenderer(RenderArena* arena, RenderStyle* style)

{

    if (!m_isActive || m_isOptional || m_isNoop)

        return 0;

    if (style) {

        style->setUnique();

        style->setBackgroundColor(Color::lightGray);

    }

    return new (arena) RenderButton(this);

}

void WMLDoElement::recalcStyle(StyleChange change)

{

    WMLElement::recalcStyle(change);

    if (renderer())

        renderer()->updateFromElement();

}

void WMLDoElement::registerTask(WMLTaskElement* task)

{

    ASSERT(!m_task);

    m_task = task;

}

void WMLDoElement::deregisterTask(WMLTaskElement* task)

{

    ASSERT_UNUSED(task, m_task == task);

    m_task = 0;

}

String WMLDoElement::label() const

{

    return parseValueSubstitutingVariableReferences(getAttribute(HTMLNames::labelAttr));

}

}

#endif