/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbWidgets module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include <hbgridviewitem.h>

#include <hbgridviewitem_p.h>

#include <hbeffect.h>

#include "hbgridview_p.h"

HbGridViewItemPrivate::HbGridViewItemPrivate(HbAbstractViewItem *prototype) :

    HbAbstractViewItemPrivate(prototype), 

    mIconItem(0),

    mTextItem(0),

    mTextValid(false),

    mIconValid(false)

{

}

HbGridViewItemPrivate::~HbGridViewItemPrivate()

{

}

void HbGridViewItemPrivate::init()

{

    if (isPrototype()) {

        HbEffect::add("gridviewitem-focus", "gridviewitem_press", "pressed");

        HbEffect::add("gridviewitem-focus", "gridviewitem_release", "released");

        mSharedData->mItemType = "gridviewitem";

        HbEffect::add("gridviewitem", "gridviewitem_appear", "appear");

        HbEffect::add("gridviewitem", "gridviewitem_disappear", "disappear");

    }

    mContentChangedSupported = true;

    mItemsChanged = false;

}

bool HbGridViewItemPrivate::isTextValid(const QVariant& text) const 

{

    return text.canConvert<QString> ();

};

bool HbGridViewItemPrivate::isIconValid(const QVariant& icon) const

{

    return (icon.canConvert<QIcon>() || icon.canConvert<HbIcon>()) ?

            true : false;

};

QString HbGridViewItemPrivate::text(const QVariant& text) const 

{

    return text.toString();

};

HbIcon HbGridViewItemPrivate::icon(const QVariant& icon) const

{

    if (icon.canConvert<QIcon> ()) {

        return HbIcon(icon.value<QIcon>());

    }

    else {

        return icon.value<HbIcon>();

    }

}

void HbGridViewItemPrivate::updateTextItem(const HbGridViewPrivate &viewPrivate)

{

    Q_Q(HbGridViewItem);

    QVariant textVariant = mIndex.data(Qt::DisplayRole);

    bool newTextValid = isTextValid(textVariant);

    QString newText;

    if (newTextValid) newText = textVariant.toString();

    if (viewPrivate.mTextVisible) {

        if (newTextValid != mTextValid

            || mText != newText) {

            // change in content

            mText = newText;

            mTextValid = newTextValid;

        } // else - no text change

    } else {

        mTextValid = false;

        mText.clear();

    }

    if (    mTextValid

        &&  !mTextItem) {

        mItemsChanged = true;

       }

    else if (   !mTextValid

             && mTextItem) {

        mItemsChanged = true;

        delete mTextItem;

        mTextItem = 0;

    }

}

void HbGridViewItemPrivate::updateIconItem(const HbGridViewPrivate &viewPrivate)

{

    Q_Q(HbGridViewItem);

    // icon item creation, if needed

    QVariant iconVariant = mIndex.data(Qt::DecorationRole);

    bool newIconValid = isIconValid(iconVariant);

    HbIcon newIcon;

    if (newIconValid) newIcon = icon(iconVariant);

    if (viewPrivate.mIconVisible) {

        if (newIconValid != mIconValid

            || mIcon != newIcon) {

            // change in content

            mIcon = newIcon;

            mIconValid = newIconValid;

        }

    } else {

        mIconValid = false;

        mIcon = HbIcon();

    }

    if (    mIconValid

        &&  !mIconItem) {

        mItemsChanged = true;

    }

    else if (   !mIconValid

            &&  mIconItem) {

        mItemsChanged = true;

        delete mIconItem;

        mIconItem = 0;

    }

}