/*

 * Copyright (c) 2009 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 <QtGui>

#include <QGraphicsLinearLayout>

#include <hbcolorscheme.h>

#include "nmhswidget.h"

#include "nmhswidgetemailengine.h"

#include "nmmessageenvelope.h"

#include "nmhswidgettitlerow.h"

#include "nmhswidgetemailrow.h"

#include "nmhswidgetconsts.h"

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

    : HbWidget(parent, flags), 

      mEngine( new NmHsWidgetEmailEngine() ),

      mRowLayout(0),

      mTitleRow( new NmHsWidgetTitleRow() )

{

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

    this->setContentsMargins( KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin,

            KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin);

    //Setup layout

    mRowLayout = new QGraphicsLinearLayout(Qt::Vertical);

    mRowLayout->setContentsMargins(KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin,

            KNmHsWidgetContentsMargin, KNmHsWidgetContentsMargin);

    mRowLayout->setSpacing(KNmHsWidgetContentsMargin);

    mRowLayout->addItem(mTitleRow);

    setLayout(mRowLayout);

    //Do the initial data setting

    updateAccountName( mEngine->accountName() );

    updateMailData();

    updateUnreadCount( mEngine->unreadCount() );

    //Get signals about changes in mail data

    connect(mEngine, SIGNAL( mailDataChanged() )

            ,this, SLOT( updateMailData() ) );

    //Get Signals about changes in unread count

    connect(mEngine, SIGNAL( unreadCountChanged(const int&) )

            ,this, SLOT( updateUnreadCount(const int&) ) );

    //Get signals about account name changes

    connect(mEngine, SIGNAL( accountNameChanged(const QString&) )

            ,this, SLOT( updateAccountName(const QString&) ) );

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

}

/*!

    Destructor

*/

NmHsWidget::~NmHsWidget()

{

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

    if(mEngine)

        {

        delete mEngine;

        mEngine = NULL;

        }

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

}

/*!

    Initializes the widget.

*/

void NmHsWidget::onInitialize()

{

    qDebug() << "NmHsWidget::onInitialize IN -->>";

    qDebug() << "NmHsWidget::onInitialize OUT <<--";  

}

/*!

    Uninitializes the widget.

*/

void NmHsWidget::onUninitialize()

{

    qDebug() << "NmHsWidget::onUninitialize IN -->>";

    qDebug() << "NmHsWidget::onUninitialize OUT <<--";

}

/*!

    Paints widget

*/

void NmHsWidget::paint(QPainter *painter, 

                          const QStyleOptionGraphicsItem *option, 

                          QWidget *widget)

{

    Q_UNUSED(option);

    Q_UNUSED(widget);

    //----- backgroud ----------------

    painter->setOpacity(KNmHsWidgetBackgroundOpacity);

    QColor backgroundColor(HbColorScheme::color(KBackgroundColorAttribute));

    // frame is not wanted to be drawn, thus pen color is same as backround color

    painter->setPen(QPen(backgroundColor, 0));

    painter->setBrush(backgroundColor);

    painter->drawRoundedRect(rect(), KNmHsWidgetShoulderRadius, 

            KNmHsWidgetShoulderRadius);

    painter->setOpacity(1); //set opacity back to default

}

/*!

    updateAccountName slot 

*/

void NmHsWidget::updateAccountName(const QString& accountName)

{

    qDebug() << "NmHsWidget::updateAccountName IN -->>";

    qDebug() << "New account name is: " << accountName;

    mTitleRow->updateAccountName(accountName);

    qDebug() << "NmHsWidget::updateAccountName OUT <<--"; 

}

/*!

    updateUnreadCount slot

*/

void NmHsWidget::updateUnreadCount(const int& unreadCount )

{

    qDebug() << "NmHsWidget::updateUnreadCount IN -->>";

    qDebug() << "New unread count is: " << QString::number(unreadCount);

    mTitleRow->updateUnreadCount(unreadCount);

    qDebug() << "NmHsWidget::updateUnreadCount OUT <<--"; 

}

/*!

    updateMailData slot

*/

void NmHsWidget::updateMailData()

{

    qDebug() << "NmHsWidget::updateData IN -->>";

    QList<NmMessageEnvelope> envelopes;

    int count = mEngine->getEnvelopes(envelopes, 2);

    //TODO: needs error check for -1 ?

    updateMailRowsList(count);

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

        {

        qDebug() << "env:" << QString::number(i) << "dispName: " << envelopes[i].sender().displayName();

        qDebug() << "env:" << QString::number(i) << "dispName: " << envelopes[i].sender().address();

        qDebug() << "env:" << QString::number(i) << "subject:" << envelopes[i].subject();

        qDebug() << "env:" << QString::number(i) << "isRead: " << envelopes[i].isRead();

        qDebug() << "env:" << QString::number(i) << "date: " << envelopes[i].sentTime();

        qDebug() << "env:" << QString::number(i) << "priority: " << envelopes[i].priority();

        qDebug() << "env:" << QString::number(i) << "attachments: " << envelopes[i].hasAttachments();

        mMailRows[i]->updateMailData( envelopes[i] );

        }

    qDebug() << "NmHsWidget::updateData OUT <<--"; 

}

/*!

    Updates list to include correct amount of mail row widgets

*/

void NmHsWidget::updateMailRowsList(int mailCount)

{

    qDebug() << "NmHsWidget::updateMailRowsList IN -->>";

    while (mMailRows.count() != mailCount)

        {

        //more mails to show than rows

        if (mMailRows.count() < mailCount)

            {

            NmHsWidgetEmailRow *row = new NmHsWidgetEmailRow();

            mMailRows.append(row);

            mRowLayout->addItem(row);            

            }

        //too many rows

        else if (mMailRows.count() > mailCount)

            {

            mRowLayout->removeItem(mMailRows.last());

            delete mMailRows.takeLast();

            }

        }

    __ASSERT_ALWAYS( mMailRows.count() == mailCount, User::Panic(_L("Invalid"), 500) );

    qDebug() << "NmHsWidget::updateMailRowsList OUT <<--";

}