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

**

** 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 "hbdatepickerviewitem_p.h"

#include "hbtapgesture_p.h"

#include "hblistviewitem_p.h"

#include <QGestureEvent>

#include <QCoreApplication>

#include <hbwidgetfeedback.h>

class HbDatePickerViewItemPrivate:public HbListViewItemPrivate

{

public:

    HbDatePickerViewItemPrivate(HbDatePickerViewItem *prototype);

    void tapTriggered(QGestureEvent *event);

    Q_DECLARE_PUBLIC(HbDatePickerViewItem)

};

HbDatePickerViewItemPrivate::HbDatePickerViewItemPrivate(HbDatePickerViewItem *prototype):

        HbListViewItemPrivate(prototype)

{

}

void HbDatePickerViewItemPrivate::tapTriggered(QGestureEvent *event)

{

    Q_Q(HbDatePickerViewItem);

    HbTapGesture *gesture = static_cast<HbTapGesture *>(event->gesture(Qt::TapGesture));

    QPointF position = event->mapToGraphicsScene(gesture->hotSpot());

    position = q->mapFromScene(position);

    switch (gesture->state()) {

        case Qt::GestureStarted: {

            setPressed(true, true);

            emit q->pressed(position);

            break;

        }

        case Qt::GestureUpdated: {

            if (gesture->tapStyleHint() == HbTapGesture::TapAndHold

                && mSharedData->mItemView

                && mSharedData->mItemView->longPressEnabled()) {

                setPressed(false, true);

            }

            break;

        }

        case Qt::GestureFinished: {

            if (gesture->tapStyleHint() == HbTapGesture::Tap

                || (mSharedData->mItemView

                && !mSharedData->mItemView->longPressEnabled())) {

                setPressed(false, true);

                HbWidgetFeedback::triggered(q, Hb::InstantReleased, 0);

                HbWidgetFeedback::triggered(q, Hb::InstantClicked);

                QPointer<HbAbstractViewItem> item = q;

              //  emit item->activated(position);

                // this viewItem may be deleted in the signal handling, so guarded pointer is used to

                // to ensure that the item still exists when item is used

                if (item) {

                    q->emitReleased(position);

                }

            } else {

                HbWidgetFeedback::triggered(q, Hb::InstantReleased,0);

                q->emitReleased(position);

            }

            break;

        }

        case Qt::GestureCanceled: {

            // hides focus immediately

            setPressed(false, false);

            emit q->released(position);

            break;

        }

        default:

            break;

    }

    event->accept();

}

HbDatePickerViewItem::HbDatePickerViewItem(QGraphicsItem* parent)

    :HbListViewItem(*(new HbDatePickerViewItemPrivate(this)),parent)

{

    HB_SDD(HbAbstractViewItem);

    sd->mItemType = QString("datepickerviewitem");

    setFocusPolicy(Qt::NoFocus);

}

HbDatePickerViewItem::HbDatePickerViewItem(const HbDatePickerViewItem& other)

    :HbListViewItem(*(new HbDatePickerViewItemPrivate(*other.d_func())),0)

{

    Q_D(HbDatePickerViewItem);

    d->q_ptr = this;

    d->init();

}

HbAbstractViewItem *HbDatePickerViewItem::createItem()

{

    HbDatePickerViewItem* item = new HbDatePickerViewItem(*this);

    item->setFocusPolicy(Qt::NoFocus);

    connect(item,SIGNAL(released(QPointF)),item->itemView(),SLOT(_q_itemSelected(QPointF)));

    return item;

}

void HbDatePickerViewItem::updateChildItems()

{

    Q_D(HbDatePickerViewItem);

    if (d->mIndex.data(Qt::DisplayRole).isNull())

         return;

    HbListViewItem::updateChildItems();

    if(d->mSelectionItem){

        d->mSelectionItem->hide();

    }

}

void HbDatePickerViewItem::gestureEvent(QGestureEvent *event)

{

    HbTapGesture *gesture = static_cast<HbTapGesture *>(event->gesture(Qt::TapGesture));

    if (gesture) {

        Q_D(HbDatePickerViewItem);

        if(gesture->state() == Qt::GestureCanceled){

            d->setPressed(false, false);

            return;

        }

        if(itemView()->isScrolling()){

            event->ignore();

            event->ignore(Qt::TapGesture);

            return;

        }

        d->tapTriggered(event);

    } else {

        HbWidget::gestureEvent(event);

    }

}

QSizeF HbDatePickerViewItem::sizeHint(Qt::SizeHint which, const QSizeF &constraint)

{

    HB_SDD(const HbAbstractViewItem);

    static qreal height=0;

    QSizeF sh=HbListViewItem::sizeHint(which,constraint);

    if(which == Qt::PreferredSize && sh.height()<=0) {

        //TODO:remove this check once refresh issue in DTP is solved on removeRows/insertRows

        if(height<=0) {

            //Let's create a temporary item and take the height for the size hint

            HbAbstractViewItem *tempitem = sd->mPrototype->createItem();

            if(sd->mItemView) {

                QAbstractItemModel *model = sd->mItemView->model();

                if(model) {

                    int rowCount=model->rowCount();

                    QModelIndex ind=model->index(rowCount,0);

                    if(ind.isValid()) {

                        tempitem->setModelIndex(ind);

                    }

                }

            }

            //call polish

            QEvent polishEvent(QEvent::Polish);

            QCoreApplication::sendEvent(const_cast<HbAbstractViewItem *>(tempitem), &polishEvent);

            height=tempitem->effectiveSizeHint(which,constraint).height();

            delete tempitem;

        }

        return QSizeF(sh.width(),height);

    }

    return sh;

}

void HbDatePickerViewItem::emitReleased(const QPointF& point)

{

     emit HbAbstractViewItem::released(point);

}

/*!

    \reimp

*/

int HbDatePickerViewItem::type() const

{

    return Type;

}