/**

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

 *

 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)

 *           (C) 1999 Antti Koivisto (koivisto@kde.org)

 *           (C) 2000 Simon Hausmann <hausmann@kde.org>

 * Copyright (C) 2003, 2006, 2007, 2008 Apple Inc. All rights reserved.

 *           (C) 2006 Graham Dennis (graham.dennis@gmail.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 "WMLAElement.h"

#include "Attribute.h"

#include "Event.h"

#include "EventHandler.h"

#include "EventNames.h"

#include "Frame.h"

#include "FrameLoader.h"

#include "HTMLNames.h"

#include "KeyboardEvent.h"

#include "MouseEvent.h"

#include "RenderBox.h"

#include "ResourceHandle.h"

#include "WMLNames.h"

namespace WebCore {

using namespace WMLNames;

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

    : WMLElement(tagName, doc)

{

}

void WMLAElement::parseMappedAttribute(Attribute* attr)

{

    if (attr->name() == HTMLNames::hrefAttr) {

        bool wasLink = isLink();

        setIsLink(!attr->isNull());

        if (wasLink != isLink())

            setNeedsStyleRecalc();

        if (isLink() && document()->isDNSPrefetchEnabled()) {

            String value = attr->value();

            if (protocolIs(value, "http") || protocolIs(value, "https") || value.startsWith("//"))

                ResourceHandle::prepareForURL(document()->completeURL(value));

        }

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

               || attr->name() == HTMLNames::titleAttr

               || attr->name() == HTMLNames::relAttr) {

        // Do nothing.

    } else

        WMLElement::parseMappedAttribute(attr);

}

bool WMLAElement::supportsFocus() const

{

    return isLink() || WMLElement::supportsFocus();

}

bool WMLAElement::isMouseFocusable() const

{

    return false;

}

bool WMLAElement::isKeyboardFocusable(KeyboardEvent* event) const

{

    if (!isFocusable())

        return false;

    if (!document()->frame())

        return false;

    if (!document()->frame()->eventHandler()->tabsToLinks(event))

        return false;

    if (!renderer() || !renderer()->isBoxModelObject())

        return false;

    // Before calling absoluteRects, check for the common case where the renderer

    // is non-empty, since this is a faster check and almost always returns true.

    RenderBoxModelObject* box = toRenderBoxModelObject(renderer());

    if (!box->borderBoundingBox().isEmpty())

        return true;

    Vector<IntRect> rects;

    FloatPoint absPos = renderer()->localToAbsolute();

    renderer()->absoluteRects(rects, absPos.x(), absPos.y());

    size_t n = rects.size();

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

        if (!rects[i].isEmpty())

            return true;

    return false;

}

void WMLAElement::defaultEventHandler(Event* event)

{

    if (isLink() && (event->type() == eventNames().clickEvent || (event->type() == eventNames().keydownEvent && focused()))) {

        MouseEvent* e = 0;

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

            e = static_cast<MouseEvent*>(event);

        KeyboardEvent* k = 0;

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

            k = static_cast<KeyboardEvent*>(event);

        if (e && e->button() == RightButton) {

            WMLElement::defaultEventHandler(event);

            return;

        }

        if (k) {

            if (k->keyIdentifier() != "Enter") {

                WMLElement::defaultEventHandler(event);

                return;

            }

            event->setDefaultHandled();

            dispatchSimulatedClick(event);

            return;

        }

        if (!event->defaultPrevented() && document()->frame()) {

            KURL url = document()->completeURL(deprecatedParseURL(getAttribute(HTMLNames::hrefAttr)));

            document()->frame()->loader()->urlSelected(url, target(), event, false, false, true, SendReferrer);

        }

        event->setDefaultHandled();

    }

    WMLElement::defaultEventHandler(event);

}

void WMLAElement::accessKeyAction(bool sendToAnyElement)

{

    // send the mouse button events if the caller specified sendToAnyElement

    dispatchSimulatedClick(0, sendToAnyElement);

}

bool WMLAElement::isURLAttribute(Attribute *attr) const

{

    return attr->name() == HTMLNames::hrefAttr;

}

String WMLAElement::target() const

{

    return getAttribute(HTMLNames::targetAttr);

}

}

#endif