/*

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

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:  Day view control of calendar

 *

 */

//System includes

#include <QGesture>

#include <QGraphicsLinearLayout>

#include <HbAbstractViewItem>

#include <HbInstance>

#include <HbAction>

//User includes

#include "calendayitemview.h"

#include "calendayutils.h"

#include "calendaycontainer.h"

#include "calendayinfo.h"

#include "calendaymodel.h"

#include "calenservices.h"

#include "calencontext.h"

#include "calenagendautils.h"

#include "CalenUid.h"

/*!

 \brief Constructor

 */

CalenDayItemView::CalenDayItemView(

    MCalenServices &services,

    HbModelIterator *iterator,

    QGraphicsItem *parent) :

    HbAbstractItemView(mContainer = new CalenDayContainer(), iterator, parent),

        mServices(services)

{

    mInfo = new CalenDayInfo(CalenDayInfo::EFour);

    mContainer->setDayInfo(mInfo);

    //setup Selection Model

    QItemSelectionModel* selModel = new QItemSelectionModel(this->model());

    if (selModel) {

        setSelectionMode(HbAbstractItemView::SingleSelection);

        setSelectionModel(selModel);

    }

    setScrollDirections(Qt::Vertical);

    setScrollingStyle(HbScrollArea::PanWithFollowOn);

    setVerticalScrollBarPolicy(HbScrollArea::ScrollBarAlwaysOff);

    //TODO: KG: Animate item pressed?! HbAbstractItemView::TouchDown

    setEnabledAnimations(HbAbstractItemView::None);

    // Get the width of content and fix its size

    qreal contentWidth = CalenDayUtils::instance()->contentWidth();

    setMinimumWidth(contentWidth);

    setMaximumWidth(contentWidth);

    setupSlots();

    setupContextMenu();

}

/*!

 \brief Destructor

 */

CalenDayItemView::~CalenDayItemView()

{

    delete mInfo;

}

/*!

 \brief Scrolls to given index

 */

void CalenDayItemView::scrollTo(

    const QModelIndex &index,

    HbAbstractItemView::ScrollHint hint)

{

    HbAbstractItemView::scrollTo(index, hint);

}

/*!

 \brief Currently empty implementation.

 */

void CalenDayItemView::reset()

{

}

/*!

 \brief Handles signal that is emitted when reset() is called, before the model's

 internal state (e.g. persistent model indexes) has been invalidated.

 */

void CalenDayItemView::modelAboutToBeReset()

{

}

/*!

 \brief Handles signal that is emitted when reset() is called, before the model's

 internal state (e.g. persistent model indexes) has been invalidated.

 */

void CalenDayItemView::modelReset()

{

    if (!mInfo) {

        return;

    }

    //reset day info

    mInfo->Reset();

    CalenDayModel* model(0);

    model = static_cast<CalenDayModel*> (this->model());

    if (!model) {

        return;

    }

    mContainer->setDate(model->modelDate().date());

    int rowCount = model->rowCount();

    SCalenApptInfo apptInfo;

    for (int row = 0; row < rowCount; row++) {

        QModelIndex idx = model->index(row, 0);

        QVariant variant = idx.data(CalenDayEntry);

        AgendaEntry entry = variant.value<AgendaEntry> ();

        apptInfo.iIndex = idx;

        QDateTime start;

        QDateTime end;

        QDateTime currDate(model->modelDate());

        CalenDayUtils::instance()->getEventValidStartEndTime(start, end, entry,

            currDate);

        apptInfo.iStartTime = start;

        apptInfo.iEndTime = end;

        TCalenInstanceId id = TCalenInstanceId::nullInstanceId();//index.row() - temporary ID

        id.mEntryLocalUid = row;

        id.mInstanceTime = apptInfo.iStartTime;

        apptInfo.iId = id;

        apptInfo.iColor = 0xffff;

        if (entry.isTimedEntry() && !CalenAgendaUtils::isAlldayEvent(entry)) {

            apptInfo.iAllDay = false;

            mInfo->InsertTimedEvent(apptInfo);

        }

        else

            if (CalenAgendaUtils::isAlldayEvent(entry)) //all-day event

            {

                apptInfo.iAllDay = true;

                mInfo->InsertAlldayEvent(apptInfo);

            }

    }

    HbAbstractItemView::reset();

}

/*!

 \brief Scrolls view vertically to the given position.

 \param newPosition position to scroll to.

 */

void CalenDayItemView::scrollVertically(const QPointF &newPosition)

{

    QPointF currentPos = contentWidget()->pos();

    if (abs(newPosition.y()) != abs(currentPos.y())) {

        currentPos.setY(newPosition.y());

        scrollContentsTo(currentPos, 0);

    }

}

/*!

 \brief This function is called when a touch press event is received 

 within Abstract view item that is representing index.

 Currently it does nothing.

 */

void CalenDayItemView::itemPressed(const QModelIndex &index)

{

    Q_UNUSED( index )

}

/*!

 \brief This function is called when a touch release event is received 

 within Abstract view item that is representing index.

 Currently it does nothing.

 */

void CalenDayItemView::itemReleased(const QModelIndex &index)

{

    Q_UNUSED( index )

}

/*!

 \brief This function is called when the item specified by index is activated by the user.

 \param position Not used.

 */

void CalenDayItemView::itemActivated(const QModelIndex &index)

{

    QItemSelectionModel* selModel(selectionModel());

    if (index.isValid() && selModel) {

        selModel->select(index, QItemSelectionModel::Current

            | QItemSelectionModel::Select);

        openSelectedItem();

    }

}

/*!

 \brief This function is called when long press event is received within Abstract view item viewItem.

 \param item Pointer to pressed item.

 \param coord Position where item was pressed.

 */

void CalenDayItemView::itemLongPressed(HbAbstractViewItem* item, QPointF coords)

{

    QModelIndex index = item->modelIndex();

    QItemSelectionModel* selModel(selectionModel());

    if (index.isValid() && selModel && mContextMenu) {

        selModel->select(index, QItemSelectionModel::Current

            | QItemSelectionModel::Select);

        mContextMenu->setPreferredPos(coords, HbPopup::BottomRightCorner);

        mContextMenu->open();

    }

}

/*!

 \brief Slot which is called whenever the orientation of the device changes.

 \param orientation New orientation.

 */

void CalenDayItemView::orientationChanged(Qt::Orientation orientation)

{

    // Update the width of screen

    qreal contentWidth = CalenDayUtils::instance()->contentWidth();

    setMinimumWidth(contentWidth);

    setMaximumWidth(contentWidth);

    if (mContainer) {

        mContainer->orientationChanged(orientation);

    }

}

/*!

 \brief Opens currently selected model item.

 */

void CalenDayItemView::openSelectedItem()

{

    issueCommandOnSelectedItem(ECalenEventView);

}

/*!

 \brief Edits currently selected model item.

 */

void CalenDayItemView::editSelectedItem()

{

    issueCommandOnSelectedItem(ECalenEditCurrentEntry);

}

/*!

 \brief Deletes currently selected model item.

 */

void CalenDayItemView::deleteSelectedItem()

{

    issueCommandOnSelectedItem(ECalenDeleteCurrentEntry);

}

/*!

 \brief Connects item view's slots.

 */

void CalenDayItemView::setupSlots()

{

    // Connect to main window's orientationChanged signal to handle orientation

    // switching

    QObject::connect(CalenDayUtils::instance()->mainWindow(),

        SIGNAL(orientationChanged(Qt::Orientation)), this,

        SLOT(orientationChanged(Qt::Orientation)));

    // Connect with model signals

    if (this->model()) {

        QObject::connect(this->model(), SIGNAL(modelAboutToBeReset()), this,

            SLOT(modelAboutToBeReset()));

        QObject::connect(this->model(), SIGNAL(modelReset()), this,

            SLOT(modelReset()));

    }

    if (mContainer) {

        // Connect with base class to enable handling item press by model index

        QObject::connect(mContainer, SIGNAL(itemCreated(HbAbstractViewItem *)),

            this, SLOT(itemCreated(HbAbstractViewItem*)));

    }

    QObject::connect(this, SIGNAL(pressed(const QModelIndex&)), this,

        SLOT(itemPressed(const QModelIndex&)));

    QObject::connect(this, SIGNAL(released(const QModelIndex&)), this,

        SLOT(itemReleased(const QModelIndex&)));

    QObject::connect(this, SIGNAL(activated(const QModelIndex&)), this,

        SLOT(itemActivated(const QModelIndex&)));

    QObject::connect(this, SIGNAL(longPressed(HbAbstractViewItem*, QPointF)),

        this, SLOT(itemLongPressed(HbAbstractViewItem*, QPointF)));

}

/*!

 \brief Creates context menu.

 */

void CalenDayItemView::setupContextMenu()

{

    mContextMenu = new HbMenu();

    HbAction *openAction = mContextMenu->addAction(hbTrId(

        "txt_common_menu_open"));

    if (openAction) {

        connect(openAction, SIGNAL(triggered()), this, SLOT(openSelectedItem()));

    }

    HbAction *editAction = mContextMenu->addAction(hbTrId(

        "txt_common_menu_edit"));

    if (editAction) {

        connect(editAction, SIGNAL(triggered()), this, SLOT(editSelectedItem()));

    }

    HbAction *deleteAction = mContextMenu->addAction(hbTrId(

        "txt_common_menu_delete"));

    if (deleteAction) {

        connect(deleteAction, SIGNAL(triggered()), this,

            SLOT(deleteSelectedItem()));

    }

}

/*!

 \brief Sets context to currently selected model item and issues calendar command.

 \param command A command to be issued.

 */

bool CalenDayItemView::issueCommandOnSelectedItem(int command)

{

    bool retVal(false);

    QItemSelectionModel* selModel(selectionModel());

    if (!selModel) {

        return retVal;

    }

    QModelIndex index(selModel->currentIndex());

    if (index.isValid()) {

        retVal = true;

        QVariant variant = index.data(CalenDayEntry);

        AgendaEntry entry = variant.value<AgendaEntry> ();

        QDateTime start;

        QDateTime end;

        CalenDayModel* model(0);

        model = static_cast<CalenDayModel*> (this->model());

        QDateTime currDate(model->modelDate());

        CalenDayUtils::instance()->getEventValidStartEndTime(start, end, entry,

            currDate);

        TRAPD(error,

            mServices.Context().setFocusDateAndTimeAndInstance(start,

                TCalenInstanceId::create(entry));

            mServices.IssueCommandL( command );

        );

        if (error) {

            retVal = false;

        }

        clearSelectionInModel();

    }

    return retVal;

}

/*!

 \brief Clears current selection in Selection Model.

 */

void CalenDayItemView::clearSelectionInModel()

{

    QItemSelectionModel* selModel(selectionModel());

    if (selModel) {

        selModel->clear();

    }

}

// End of File