/*

 * 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: 

 *

 */

#include <QDebug>

#include <QGraphicsLinearLayout>

#include <hbdocumentloader.h>

#include <hblabel.h>

#include <hbextendedlocale.h>

#include "nmicons.h"

#include "nmcommon.h"

#include "nmhswidgetemailrow.h"

#include "nmhswidgetconsts.h"

#include "nmmessageenvelope.h"

NmHsWidgetEmailRow::NmHsWidgetEmailRow(QGraphicsItem *parent, Qt::WindowFlags flags)

    : HbWidget(parent, flags),

      mSenderLabel(0),

      mSubjectLabel(0),

      mTimeLabel(0),

      mNewMailIcon(0)

{

    qDebug() << "NmHsWidgetEmailRow::NmHsWidgetEmailRow IN -->>";

    loadDocML();

    qDebug() << "NmHsWidgetEmailRow::NmHsWidgetEmailRow OUT <<--";

}

/*!

    Destructor

*/

NmHsWidgetEmailRow::~NmHsWidgetEmailRow()

{

    qDebug() << "NmHsWidgetEmailRow::~NmHsWidgetEmailRow IN -->>";

    qDebug() << "NmHsWidgetEmailRow::~NmHsWidgetEmailRow OUT <<--";

}

/*!

    Loads layout data and child items from docml file

*/

void NmHsWidgetEmailRow::loadDocML()

{

    qDebug() << "NmHsWidgetEmailRow::loadDocML IN -->>";

    QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical);

    layout->setContentsMargins(KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin,

            KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin);

    layout->setSpacing(KNmHsWidgetContentsMargin);        

    // Use document loader to load the contents

    HbDocumentLoader loader;

    bool ok = false;

    loader.load( KNmHsWidgetMailRowDocML, &ok);

    Q_ASSERT_X(ok, "nmhswidget", "invalid email docml file");

    //find container widget

    QGraphicsWidget *container = loader.findWidget(KNmHsWidgetMailRowContainer);

    Q_ASSERT_X((container != 0), "nmhswidget", "email container not found!");

    layout->addItem(container);

    //child items possible to update

    mSenderLabel = static_cast<HbLabel*>(loader.findWidget(KNmHsWidgetMailRowSenderLabel));

    mSubjectLabel = static_cast<HbLabel*>(loader.findWidget(KNmHsWidgetMailRowSubjectLabel));

    mTimeLabel = static_cast<HbLabel*>(loader.findWidget(KNmHsWidgetMailRowTimeLabel));

    //Icons

    mNewMailIcon = static_cast<HbLabel*>(loader.findWidget(KNmHsWidgetMailRowNewMailIcon));

    // KNmHsWidgetMailRowLeftIcon is not yet used, because followup information is not shown in client side

    // and thus it is not wanted to be shown in widget side

    mStatusIcons.append( static_cast<HbLabel*>(loader.findWidget(KNmHsWidgetMailRowRightIcon)));

    mStatusIcons.append( static_cast<HbLabel*>(loader.findWidget(KNmHsWidgetMailRowMiddleIcon)));

    mStatusIcons.append( static_cast<HbLabel*>(loader.findWidget(KNmHsWidgetMailRowLeftIcon)));

    //hide all the icons first to avoid blinking

    hideIcons();

    setLayout(layout);

    qDebug() << "NmHsWidgetEmailRow::loadDocML OUT <<--";

}

/*!

    Sets the data provided as a parameter to the UI components

    \param envelope message envelope representing an email

*/

void NmHsWidgetEmailRow::updateMailData( const NmMessageEnvelope& envelope )

    {

    qDebug() << "NmHsWidgetEmailRow::updateMailData IN -->>";

    //hide all icons, so no previous data is messing with the new

    hideIcons();

    //Show sender name if it is available, otherwise show email address

    QString senderDisplayName = envelope.sender().displayName();

    if ( !senderDisplayName.isNull() && !senderDisplayName.isEmpty()  )

        {

        mSenderLabel->setPlainText( senderDisplayName );

        }

    else

        {

        mSenderLabel->setPlainText ( envelope.sender().address() );

        }

    //Set subject

    //Todo: what about empty subject?

    mSubjectLabel->setPlainText( envelope.subject() );

    //Set Date with locale support

    //Time shown if message is sent today, otherwise show date

    HbExtendedLocale locale = HbExtendedLocale::system();

    QDateTime now = QDateTime::currentDateTime();

    QDateTime time = envelope.sentTime(); 

    if ( time.date() == now.date() )

        {

        //time format specification

        QString timeSpec = r_qtn_time_usual;

        mTimeLabel->setPlainText( locale.format(time.time(), timeSpec) );

        }

    else

        {

        QString dateSpec = r_qtn_date_without_year;

        mTimeLabel->setPlainText( locale.format(time.date(), dateSpec) );

        }

    //set new icons to widget based on the data

    setIconsToWidget( envelope );

    qDebug() << "NmHsWidgetEmailRow::updateMailData OUT <<--";

    }

/*!

    hide icons from widget

*/

void NmHsWidgetEmailRow::hideIcons()

    {

    qDebug() << "NmHsWidgetEmailRow::hideIcons IN -->>";

    for( int i = 0; i<mStatusIcons.count();i++)

        {

        mStatusIcons[i]->hide();

        }

    mNewMailIcon->hide();

    qDebug() << "NmHsWidgetEmailRow::hideIcons OUT <<--";

    }

/*!

    Set icons to widget

*/

void NmHsWidgetEmailRow::setIconsToWidget( const NmMessageEnvelope& envelope )

{

    qDebug() << "NmHsWidgetEmailRow::setIconsToWidget IN -->>";

    bool unreadMail = !envelope.isRead();

    bool attachment = envelope.hasAttachments();

    int priority = envelope.priority();

    if(unreadMail){

        //Todo: set unread icon when available

        mNewMailIcon->show();

    }

    // Here we have list for priority and attachment icons. Later it is easy to add

    // followup icon or something else if needed.

    QList<HbIcon> iconList;

    // Priority icon is added to list first thus it is always shown most right.

    switch (priority){

        case NmMessagePriorityLow:

            iconList.append(NmIcons::getIcon(NmIcons::NmIconPriorityLow));

            break;

        case NmMessagePriorityHigh:

            iconList.append(NmIcons::getIcon(NmIcons::NmIconPriorityHigh));

            break;

        case NmMessagePriorityNormal:

        default:

            // Normal priority has no icon

            break;

        }

    // Attachment icon is always shown on the left side of attachment icon if it

    // exists. Otherwise in the most right.

    if(attachment){

        iconList.append(NmIcons::getIcon(NmIcons::NmIconAttachment));

    }

    // Here we show icons added to the iconList in the order they have been added.

    for(int count = 0; count<iconList.count(); count++){

        mStatusIcons[count]->setIcon(iconList[count]);

        mStatusIcons[count]->setAlignment(Qt::AlignRight);

        mStatusIcons[count]->show();

    }

    qDebug() << "NmHsWidgetEmailRow::setIconsToWidget OUT <<--";

}