/*

 * 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 <HbFrameDrawer>

#include <HbFrameItem>

#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),

    mSeparatorIcon(0), 

    mMessageId(0)

{

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

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

}

/*!

 Destructor

 */

NmHsWidgetEmailRow::~NmHsWidgetEmailRow()

{

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

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

}

/*!

 Returns id of message shown

 */

NmId NmHsWidgetEmailRow::messageId()

{

    qDebug() << "NmHsWidgetEmailRow::messageId()";

    return mMessageId;

}

/*!

 Loads layout data and child items from docml file

 Must be called after constructor.

  /return true if loading succeeded, otherwise false. False indicates that object is unusable.

 */

bool NmHsWidgetEmailRow::loadDocML()

{

    HbFrameDrawer* backgroundFrameDrawer = 0;

    HbFrameItem* backgroundLayoutItem = 0;

    QT_TRY{

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

        // Use document loader to load the contents

        HbDocumentLoader loader;

        bool ok(false);

        loader.load(KNmHsWidgetMailRowDocML, &ok);

        if (!ok) {

            qDebug() << "NmHsWidgetEmailRow::loadDocML fail @ loader <<--";

            return false;

        }

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

        //Do the layout stuff and Set layout before next return to avoid memoryleak

        layout->setContentsMargins(KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin,

            KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin);

        layout->setSpacing(KNmHsWidgetContentsMargin);

        setLayout(layout);

        //find container widget

        QGraphicsWidget *container = loader.findWidget(KNmHsWidgetMailRowContainer);

        if (!container) {

            qDebug() << "NmHsWidgetEmailRow::loadDocML fail @ container <<--";

            return false;

        }

        layout->addItem(container);

        //child items possible to update

        //separator

        mSeparatorIcon = static_cast<HbLabel*> (loader.findWidget(KNmHsWidgetMailSeparatorIcon));

        //labels

        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)));

        //Verify that items are valid

        if (!mSenderLabel || !mSubjectLabel || !mTimeLabel || !mNewMailIcon || !mSeparatorIcon) {

            qDebug() << "NmHsWidgetEmailRow::loadDocML fail @ labels & icons <<--";

            return false;

        }

        //Verify all mStatusIcons

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

            if (!mStatusIcons[i]) {

                qDebug() << "NmHsWidgetEmailRow::loadDocML status icons <<--";

                return false;

            }

        }

        //separator icon

        HbIcon separatorIcon("qtg_graf_divider_h_thin");

        mSeparatorIcon->setIcon(separatorIcon);

        //new email icon

        backgroundFrameDrawer = new HbFrameDrawer("qtg_fr_list_new_item",

            HbFrameDrawer::ThreePiecesVertical);

        backgroundLayoutItem = new HbFrameItem(backgroundFrameDrawer);

        mNewMailIcon->setBackgroundItem(backgroundLayoutItem);

        //hide all the icons first to avoid blinking

        hideIcons();

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

        return true;

    }

    QT_CATCH(...){

        if(!backgroundLayoutItem && backgroundFrameDrawer){

            delete backgroundFrameDrawer;

            backgroundFrameDrawer = NULL;

        }

        return false;

    }

}

/*!

 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();

    mMessageId = envelope.messageId();

    //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

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

    mMessageSentTime = envelope.sentTime();

    updateDateTime();

    //set new icons to widget based on the data

    setIconsToWidget( envelope );

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

    }

/*!

    updateDateTime to label using correct locale

*/

void NmHsWidgetEmailRow::updateDateTime()

    {

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

    //Set Date with locale support

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

    HbExtendedLocale locale = HbExtendedLocale::system();

    QDateTime now = QDateTime::currentDateTime();

    if ( mMessageSentTime.date() == now.date() )

        {

        //time format specification

        QString timeSpec = r_qtn_time_usual;

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

        }

    else

        {

        QString dateSpec = r_qtn_date_without_year;

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

        }

    qDebug() << "NmHsWidgetEmailRow::updateDateTime 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) {

        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]->show();

    }

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

}

/*!

 mousePressEvent(QGraphicsSceneMouseEvent *event)

 */

void NmHsWidgetEmailRow::mousePressEvent(QGraphicsSceneMouseEvent *event)

{

    qDebug() << "NmHsWidgetTitleRow::mousePressEvent() IN -->>";

    Q_UNUSED(event); 

    qDebug() << "NmHsWidgetTitleRow::mousePressEvent() OUT <<--";

}

/*!

    mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

*/

void NmHsWidgetEmailRow::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

{

    qDebug() << "NmHsWidgetTitleRow::mouseReleaseEvent() IN -->>";

    Q_UNUSED(event);

    emit mailViewerLaunchTriggered(mMessageId);

    qDebug() << "NmHsWidgetTitleRow::mouseReleaseEvent() OUT <<--";

}