/*

* 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 "nmuiheaders.h"

static const qreal nmHeaderLineOpacity = 0.4;

/*!

    \class NmViewerHeader

    \brief Mail viewer header area class

*/

/*!

    Constructor

*/

NmViewerHeader::NmViewerHeader(QGraphicsItem *parent) :

    HbWidget(parent),

    mMessage(NULL),

    mSubject(NULL),

    mSent(NULL),

    mPrioIcon(NULL),

    mHeaderBox(NULL),

    mRecipientsBox(NULL),

    mViewerView(NULL)

{

    loadWidgets();

}

/*!

    Destructor

*/

NmViewerHeader::~NmViewerHeader()

{

}

/*!

    setter for nmviewer view

*/

void NmViewerHeader::setView(NmViewerView* view)

{

    mViewerView = view;

}

/*!

    Load widgets from XML for the header

*/

void NmViewerHeader::loadWidgets()

{

    // Scale header widget to screen width

    setSizePolicy(QSizePolicy::Minimum, QSizePolicy::MinimumExpanding); 

    // Add header box

    if (!mHeaderBox) {

        mHeaderBox = new HbGroupBox(this);

        HbStyle::setItemName(mHeaderBox, "headergroupbox");

        mHeaderBox->setObjectName("ViewerHeaderRecipients");

        mHeaderBox->setFontSpec(HbFontSpec(HbFontSpec::Secondary));

        mHeaderBox->setCollapsable(true);

    }

    // Add sent time

    if (!mSent){

        mSent = new HbTextItem(this);

        HbStyle::setItemName(mSent, "sent");

        mSent->setObjectName("ViewerHeaderSent");

    }

    // Add priority icon

    if (!mPrioIcon){

        mPrioIcon = new HbIconItem(this);

        mSent->setObjectName("ViewerHeaderPrioIcon");

        HbStyle::setItemName(mPrioIcon, "prioicon");

    }

    // Add subject

    if (!mSubject){

        mSubject = new HbTextItem(this);

        HbStyle::setItemName(mSubject, "subject");

        mSubject->setObjectName("ViewerHeaderSubject");

        mSubject->setTextWrapping(Hb::TextWordWrap);

    }

}

/*!

    Reimplementation to do some extra painting

*/

void NmViewerHeader::paint(

    QPainter *painter,

    const QStyleOptionGraphicsItem *option,

    QWidget *widget)

{

    Q_UNUSED(option);

    Q_UNUSED(widget);

    if (painter) {

        painter->setOpacity(nmHeaderLineOpacity);

        QLineF line1( rect().topLeft().x(), rect().bottomRight().y(),

                     rect().bottomRight().x(), rect().bottomRight().y());

        painter->drawLine(line1);

        if (mHeaderBox){

            QRectF headerBoxGeometry = mHeaderBox->geometry();

            QLineF line2( headerBoxGeometry.topLeft().x(), headerBoxGeometry.bottomRight().y(),

                          headerBoxGeometry.bottomRight().x(), headerBoxGeometry.bottomRight().y());

            painter->drawLine(line2);        

        }       

    }

}

/*!

    Setter for message object

*/

void NmViewerHeader::setMessage(NmMessage* message)

{

    mMessage=message;

    setHeaderData();

}

/*!

    Function updates data in already created objects. New message pointer

    comes from viewer view, ownership is not transferred.

    This function gets called when message body is fetched and

    to/cc/bcc data needs to be updated

*/

void NmViewerHeader::updateMessageData(NmMessage* message)

{

    if (message){

        mMessage=message;

        // Set recipients to text edit field as html 

        NmAddress sender = mMessage->envelope().sender();      

        if (mRecipientsBox){  

            mRecipientsBox->setHtml(formatRecipientList(addressToDisplayInHtml(sender),

                                    mMessage->envelope().toRecipients(), 

                                    mMessage->envelope().ccRecipients()));

        }       

    }

}

/*!

    Function sets data to header area based on message data

*/

void NmViewerHeader::setHeaderData()

{

    if (mMessage) {

        // Background is all white always, so force text color to black

        QColor textColor(Qt::black);

        const NmMessageEnvelope &envelope = mMessage->envelope();

        const QString dispName = envelope.sender().displayName();

        if (dispName.length()>0){

            mSenderName = NmUtilities::cleanupDisplayName(dispName);

        }

        else {

            mSenderName = envelope.sender().address();

        }

        if (mHeaderBox) {

            mHeaderBox->setHeading(mSenderName);

        }

        // Set subject text

        if (mSubject){

            QString subjectText = envelope.subject();

            if (subjectText.length()){

                mSubject->setText(subjectText);

            }

            else{

                mSubject->setText(hbTrId("txt_mail_dblist_val_no_subject"));

            }

        mSubject->setTextColor(textColor);

        }

        if (mSent){

            HbExtendedLocale locale = HbExtendedLocale::system();

            QTime time = envelope.sentTime().toLocalTime().time();

            QDate sentLocalDate = envelope.sentTime().toLocalTime().date();

            QString shortDateSpec = r_qtn_date_without_year;

            QString shortTimeSpec = r_qtn_time_usual;

            QString text = locale.format(sentLocalDate, shortDateSpec);

            text += " ";

            text += locale.format(time, shortTimeSpec);

            mSent->setText(text);

            mSent->setTextColor(textColor);

        } 

        if (mPrioIcon){

            switch (envelope.priority()){

                case NmMessagePriorityLow:

                    mPrioIcon->setObjectName("ViewerHeaderPriorityLow");

                    mPrioIcon->setIcon(NmIcons::getIcon(NmIcons::NmIconPriorityLow));

                    mPrioIcon->show();

                    break;

                case NmMessagePriorityHigh:

                    mPrioIcon->setObjectName("ViewerHeaderPriorityHigh");

                    mPrioIcon->setIcon(NmIcons::getIcon(NmIcons::NmIconPriorityHigh));

                    mPrioIcon->show();

                    break;

                case NmMessagePriorityNormal:

                default:

                    // Normal priority has no icon so hide the label hide.

                    mPrioIcon->setObjectName("ViewerHeaderPriorityNormal");

                    break;

            }

        }

    }

    createExpandableHeader();

}

/*!

    Function can be used to rescale the header area.

*/ 

void NmViewerHeader::rescaleHeader(const QSizeF layoutReso)

{  

    setMinimumWidth(layoutReso.width());

    setMaximumWidth(layoutReso.width());

}

/*!

    Function creates expandable header area with group box

*/

void NmViewerHeader::createExpandableHeader()

{

    if (mHeaderBox) {        // Initialize recipient box

        if (!mRecipientsBox){

            mRecipientsBox = new HbTextEdit();

            HbStyle::setItemName(mRecipientsBox, "recipients");

            mRecipientsBox->setContextMenuFlags(0);

            mRecipientsBox->setReadOnly(true);

            mRecipientsBox->setFontSpec(HbFontSpec(HbFontSpec::Secondary)); 

            // Set text wrapping for from/to/cc address fields using text document

            QTextOption textOption = mRecipientsBox->document()->defaultTextOption();

            textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);

            mRecipientsBox->document()->setDefaultTextOption(textOption);

        }

        connect(mRecipientsBox, SIGNAL(cursorPositionChanged(int, int)),

                this, SLOT(cursorPositionChanged(int, int)));

        // Set recipients to text edit field as html 

        NmAddress sender = mMessage->envelope().sender();               

        if (mMessage) {

            mRecipientsBox->setHtml(formatRecipientList(addressToDisplayInHtml(sender),

                                    mMessage->envelope().toRecipients(), 

                                    mMessage->envelope().ccRecipients()));

        }

        mRecipientsBox->setCursorVisibility(Hb::TextCursorHidden);

        mHeaderBox->setContentWidget(mRecipientsBox);

        // Set box collapsed as default

        mHeaderBox->setCollapsed(true);

    }

}

/*!

    Function formats recipient list to be displayed in HTML format.

*/

QString NmViewerHeader::formatRecipientList(const QString &sender,

                                            const QList<NmAddress> &to,

                                            const QList<NmAddress> &cc)

{

    QString result;

    result.append("<html><body link=\"blue\" topmargin=\"0\" leftmargin=\"0\" marginheight=\"0\"");

    result.append("marginwidth=\"0\" bgcolor=\"white\" text=\"black\">");    

    result.append("<font color=\"black\" face=\"");

    result.append("Nokia Sans");

    result.append("\"size=\"3\">"); 

    // Set text in HTML format based on layout direction

    if (qApp->layoutDirection()==Qt::RightToLeft){

        result.append("<p style=\"margin-right: '0'; margin-left: '0'\" dir=\"rtl\"><b>"); 

        result.append(hbTrId("txt_mail_list_from"));

        result.append(" </b>"); 

        result.append(sender);

        result.append("<br><b>"); 

        result.append(hbTrId("txt_mail_list_to"));

        result.append(" </b>");

        int reciCount = to.count();

        for (int i=0; i < reciCount; i++) { 

            result.append(addressToDisplayInHtml(to[i]));

            result.append(" ");

        } 

        reciCount = cc.count();

        if (reciCount) {

            result.append("<br><b>");

            result.append(hbTrId("txt_mail_list_cc"));

            result.append(" </b>");

            for (int i=0; i < reciCount; i++) {

                result.append(addressToDisplayInHtml(cc[i]));

                result.append(" "); 

            }

        }   

    }

    else{

        result.append("<p style=\"margin-right: '0'; margin-left: '0'\" dir=\"ltr\"><b>"); 

        result.append(hbTrId("txt_mail_list_from"));

        result.append(" </b>"); 

        result.append(sender);

        result.append("<br><b>"); 

        result.append(hbTrId("txt_mail_list_to"));

        result.append(" </b>");

        int reciCount = to.count();

        for (int i=0; i < reciCount; i++) { 

            result.append(addressToDisplayInHtml(to[i]));

            result.append("; ");

        }

        reciCount = cc.count();

        if (reciCount) {

            result.append("<br><b>");

            result.append(hbTrId("txt_mail_list_cc"));

            result.append(" </b>");

            for (int i=0; i < reciCount; i++) {

                result.append(addressToDisplayInHtml(cc[i]));

                result.append("; ");

            }

        }   

    } 

    result.append("</p></font></body></html>");     

    return result;

}

/*!

    Function retursn address string from NmAddress to

    be displayed in HTML format

*/

QString NmViewerHeader::addressToDisplayInHtml(const NmAddress &addr)

{

    QString dispName;

    if (addr.displayName().length()!=0){

        dispName.append(NmUtilities::cleanupDisplayName(addr.displayName()));

    }

    else{

        dispName.append(addr.address());

    }

    QString ret="<a href=mailto:";

    ret.append(addr.address());

    ret.append(">");

    ret.append(dispName);

    ret.append("</a>");

    return ret;

}

/*!

    Function handles cursor position changes in header group box.

    E.g link handler.

*/

void NmViewerHeader::cursorPositionChanged(int oldPos, int newPos)

{

    Q_UNUSED(oldPos);

    QString string = mRecipientsBox->anchorAt(newPos); 

    if (mViewerView&&string.contains("mailto:",Qt::CaseSensitive)){

        QUrl url(string);     

        mViewerView->linkClicked(url);

    }

}