/*

 * Copyright (C) 2004, 2005, 2006 Apple Computer, 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:

 * 1. Redistributions of source code must retain the above copyright

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

 * 2. 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.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "Widget.h"

#include "IntRect.h"

#include "ScrollView.h"

#include <wtf/Assertions.h>

namespace WebCore {

void Widget::init(PlatformWidget widget)

{

    m_parent = 0;

    m_selfVisible = false;

    m_parentVisible = false;

    m_widget = widget;

    if (m_widget)

        retainPlatformWidget();

}

void Widget::setParent(ScrollView* view)

{

    ASSERT(!view || !m_parent);

    if (!view || !view->isVisible())

        setParentVisible(false);

    m_parent = view;

    if (view && view->isVisible())

        setParentVisible(true);

}

ScrollView* Widget::root() const

{

    const Widget* top = this;

    while (top->parent())

        top = top->parent();

    if (top->isFrameView())

        return const_cast<ScrollView*>(static_cast<const ScrollView*>(top));

    return 0;

}

void Widget::removeFromParent()

{

    if (parent())

        parent()->removeChild(this);

}

IntRect Widget::convertFromContainingWindow(const IntRect& windowRect) const

{

    if (const ScrollView* parentScrollView = parent()) {

        IntRect parentRect = parentScrollView->convertFromContainingWindow(windowRect);

        return convertFromContainingView(parentRect);

    }

    return convertFromContainingWindowToRoot(this, windowRect);

}

IntRect Widget::convertToContainingWindow(const IntRect& localRect) const

{

    if (const ScrollView* parentScrollView = parent()) {

        IntRect parentRect = convertToContainingView(localRect);

        return parentScrollView->convertToContainingWindow(parentRect);

    }

    return convertFromRootToContainingWindow(this, localRect);

}

IntPoint Widget::convertFromContainingWindow(const IntPoint& windowPoint) const

{

    if (const ScrollView* parentScrollView = parent()) {

        IntPoint parentPoint = parentScrollView->convertFromContainingWindow(windowPoint);

        return convertFromContainingView(parentPoint);

    }

    return convertFromContainingWindowToRoot(this, windowPoint);

}

IntPoint Widget::convertToContainingWindow(const IntPoint& localPoint) const

{

    if (const ScrollView* parentScrollView = parent()) {

        IntPoint parentPoint = convertToContainingView(localPoint);

        return parentScrollView->convertToContainingWindow(parentPoint);

    }

    return convertFromRootToContainingWindow(this, localPoint);

}

#if !PLATFORM(MAC)

IntRect Widget::convertFromRootToContainingWindow(const Widget*, const IntRect& rect)

{

    return rect;

}

IntRect Widget::convertFromContainingWindowToRoot(const Widget*, const IntRect& rect)

{

    return rect;

}

IntPoint Widget::convertFromRootToContainingWindow(const Widget*, const IntPoint& point)

{

    return point;

}

IntPoint Widget::convertFromContainingWindowToRoot(const Widget*, const IntPoint& point)

{

    return point;

}

#endif

#if !PLATFORM(MAC) && !PLATFORM(GTK)

void Widget::releasePlatformWidget()

{

}

void Widget::retainPlatformWidget()

{

}

#endif

IntRect Widget::convertToContainingView(const IntRect& localRect) const

{

    if (const ScrollView* parentScrollView = parent()) {

        IntRect parentRect(localRect);

        parentRect.setLocation(parentScrollView->convertChildToSelf(this, localRect.location()));

        return parentRect;

    }

    return localRect;

}

IntRect Widget::convertFromContainingView(const IntRect& parentRect) const

{

    if (const ScrollView* parentScrollView = parent()) {

        IntRect localRect = parentRect;

        localRect.setLocation(parentScrollView->convertSelfToChild(this, localRect.location()));

        return localRect;

    }

    return parentRect;

}

IntPoint Widget::convertToContainingView(const IntPoint& localPoint) const

{

    if (const ScrollView* parentScrollView = parent())

        return parentScrollView->convertChildToSelf(this, localPoint);

    return localPoint;

}

IntPoint Widget::convertFromContainingView(const IntPoint& parentPoint) const

{

    if (const ScrollView* parentScrollView = parent())

        return parentScrollView->convertSelfToChild(this, parentPoint);

    return parentPoint;

}

#if !PLATFORM(EFL)

void Widget::frameRectsChanged()

{

}

#endif

} // namespace WebCore