/*

 * 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:

 * Message body preview class.

 * has in built logic for finding phone number, email, url.

 *

 */

#include "univiewertextitem.h"

#include <QRegExp>

#include <QGraphicsSceneMouseEvent>

#include <QApplication>

#include <QClipboard>

#include <QTextBlock>

#include <HbMenu>

#include <HbAction>

#include <cntservicescontact.h>

#include <qtcontacts.h>

#include <XQServiceRequest.h>

QTM_USE_NAMESPACE

//consts

//regexp

const QString NUMBER_PATTERN("(\\(|\\+|\\d)((?:\\d{2,})((?:[\\s-/.\\)\\()])*(?:(\\d+|\\))))*)|((\\*#)(?:\\d+(\\*|#)(?:\\d+#)?))");

const QString URL_PATTERN("(((ht|f|rt)(tp|sp)(s?)\\:\\/\\/)|(www|wap)(?:\\.))(([-\\w]*[0-9a-zA-Z])+(:(0-9)*)*(\\/?)([a-zA-Z0-9\\-\\?\\,\'\\/\\\\+&%\\$#_=~]*)(\\.)([-\\w]*[0-9a-zA-Z])+(:(0-9)*)*(\\/?)([a-zA-Z0-9\\-\\?\\,\'\\/\\\\+&%\\$#_=~]*))+");

//rules

const QString NUMBER_RULE("NUMBER_RULE");

const QString EMAIL_RULE("EMAIL_RULE");

const QString URL_RULE("URL_RULE");

//localization

#define LOC_OPEN_CONTACT_INFO hbTrId("txt_messaging_menu_open_contact_info")

#define LOC_CALL              hbTrId("txt_common_menu_call_verb")

#define LOC_SEND_MESSAGE      hbTrId("txt_common_menu_send_message")

#define LOC_SAVE_TO_CONTACTS  hbTrId("txt_common_menu_save_to_contacts")

#define LOC_COPY              hbTrId("txt_common_menu_copy")

#define LOC_CREATE_EMAIL      hbTrId("txt_messaging_menu_create_mail")

#define LOC_OPEN_LINK         hbTrId("txt_messaging_menu_open_link")

#define LOC_ADD_TO_BOOKMARKS  hbTrId("txt_messaging_menu_add_to_bookmarks")

#define LOC_COPY_LINK         hbTrId("txt_messaging_menu_copy_link")

UniViewerTextItem::UniViewerTextItem(QGraphicsItem* parent):

HbTextEdit(parent),

mFindOn(true),

mCursorPos(-1)

{

    this->setReadOnly(true);

    this->setCursorVisibility(Hb::TextCursorHidden);

    //inserting rules and patterns to map.

    mRules.insert(NUMBER_RULE,NUMBER_PATTERN);

    mRules.insert(EMAIL_RULE,EMAIL_PATTERN);

    mRules.insert(URL_RULE,URL_PATTERN);

    mFormatNormal.setForeground(palette().link());

    mFormatNormal.setBackground(Qt::transparent);

    mFormatHighlight.setBackground(palette().highlight());

    mFormatHighlight.setForeground(palette().highlightedText());

    connect(this, SIGNAL(aboutToShowContextMenu(HbMenu*,QPointF)),

            this, SLOT(aboutToShowContextMenu(HbMenu*,QPointF)));

}

UniViewerTextItem::~UniViewerTextItem()

    {

    }

void UniViewerTextItem::setFindOn(bool on)

{

    mFindOn = on;   

}

void UniViewerTextItem::setText(const QString& text)

{

    this->setPlainText(text);

    applyRule();

}

void UniViewerTextItem::applyRule()

{

    if(mFindOn == false)

    {

        return;

    }

    QMap<QString, QString>::const_iterator i;

    for (i = mRules.constBegin(); i != mRules.constEnd(); ++i)

    {

        QString ruleName = i.key();

        QString rule = i.value();

        QRegExp ruleExp(rule);

        QTextCursor cursor = this->document()->find(ruleExp);

        while(cursor.hasSelection())

        {

            // Insert anchor in the document

            QTextCharFormat f;

            f.setFontUnderline(true);

            f.setForeground(palette().link());

            //prepending rule name to identiy different fragment to which

            //catagory it belongs to.

            QString txt = cursor.selectedText().prepend(ruleName);

            if(ruleName == NUMBER_RULE)

            {

                //removing special char(s) from phone numbers.

                QRegExp numberCharExp("[\\s-/.\\(\\)]");

                txt = txt.remove(numberCharExp);

            }

            f.setAnchorHref(txt);

            f.setAnchor(true);

            cursor.mergeCharFormat(f);

            // Find next

            cursor = this->document()->find(ruleExp, cursor);

        }

    }

}

void UniViewerTextItem::aboutToShowContextMenu(HbMenu *contextMenu, const QPointF &pos)

{

    // Check if there is an anchor at this pos

    QString  anchor = this->anchorAt(pos);

    if(!anchor.isEmpty() && !this->textCursor().hasSelection())

    {

        //remove default actions.

        contextMenu->clearActions();

        if(anchor.contains(QRegExp("^"+NUMBER_RULE)))

        {

            addNumberMenu(contextMenu,anchor);

        }

        else if(anchor.contains(QRegExp("^"+EMAIL_RULE)))

        {

            addEmailMenu(contextMenu,anchor);

        }

        else if(anchor.contains(QRegExp("^"+URL_RULE)))

        {

            addUrlMenu(contextMenu,anchor);

        }

    }

    connect(contextMenu,SIGNAL(aboutToClose()),this,SLOT(menuClosed()));

}

void UniViewerTextItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

{

    HbTextEdit::mouseReleaseEvent(event);

    highlightText(false);

    QString anchor = this->anchorAt(event->pos());

    if(!anchor.isEmpty() && !this->textCursor().hasSelection())

    {

        shortTapAction(anchor);

    }

}

void UniViewerTextItem::mousePressEvent(QGraphicsSceneMouseEvent *event)

{

    HbTextEdit::mousePressEvent(event);

    QTextDocument* doc = this->document();

    mCursorPos = doc->documentLayout()->hitTest(event->pos(), Qt::ExactHit);

    highlightText(true);

}

void UniViewerTextItem::addNumberMenu(HbMenu* contextMenu,const QString& data)

{

    HbAction* action = NULL;

    action = contextMenu->addAction(LOC_OPEN_CONTACT_INFO, this, SLOT(openContactInfo()));

    action->setData(data);

    action = contextMenu->addAction(LOC_CALL, this, SLOT(call()));

    action->setData(data);

    action = contextMenu->addAction(LOC_SEND_MESSAGE, this, SLOT(sendMessage()));

    action->setData(data);

    action = contextMenu->addAction(LOC_SAVE_TO_CONTACTS, this, SLOT(saveToContacts()));

    action->setData(data);

    action = contextMenu->addAction(LOC_COPY, this, SLOT(copyToClipboard()));

    action->setData(data);

}

void UniViewerTextItem::addEmailMenu(HbMenu* contextMenu,const QString& data)

{

    HbAction* action = NULL;

    action = contextMenu->addAction(LOC_CREATE_EMAIL, this, SLOT(createEmail()));

    action->setData(data);

    action = contextMenu->addAction(LOC_OPEN_CONTACT_INFO, this, SLOT(openContactInfo()));

    action->setData(data);

    action = contextMenu->addAction(LOC_SAVE_TO_CONTACTS, this, SLOT(saveToContacts()));

    action->setData(data);

    action = contextMenu->addAction(LOC_COPY, this, SLOT(copyToClipboard()));

    action->setData(data);

}

void UniViewerTextItem::addUrlMenu(HbMenu* contextMenu,const QString& data)

{

    HbAction* action = NULL;

    action = contextMenu->addAction(LOC_OPEN_LINK, this, SLOT(openLink()));

    action->setData(data);

    action = contextMenu->addAction(LOC_ADD_TO_BOOKMARKS, this, SLOT(addToBookmarks()));

    action->setData(data);

    action = contextMenu->addAction(LOC_COPY_LINK, this, SLOT(copyToClipboard()));

    action->setData(data);

}

void UniViewerTextItem::shortTapAction(QString anchor)

{

    HbAction action;

    action.setData(anchor);

    if(anchor.contains(NUMBER_RULE))

    {

        //open vcard template.

        connect(&action,SIGNAL(triggered()),this,SLOT(openContactInfo()));

    }

    else if(anchor.contains(EMAIL_RULE))

    {

        //Create email

        connect(&action,SIGNAL(triggered()),this,SLOT(createEmail()));

    }

    else if(anchor.contains(URL_RULE))

    {

        //Open link in the browser

        connect(&action,SIGNAL(triggered()),this,SLOT(openLink()));

    }

    action.trigger();

}

void UniViewerTextItem::copyToClipboard()

{

    HbAction* action = qobject_cast<HbAction*>(sender());

    if(action)

    {

        QMimeData* data = new QMimeData();

        QString str = action->data().toString();

        //removing rule name before setting it to clipboard.

        str.remove(QRegExp("^"+NUMBER_RULE));

        str.remove(QRegExp("^"+EMAIL_RULE));

        str.remove(QRegExp("^"+URL_RULE));

        data->setText(str);

        QApplication::clipboard()->setMimeData(data);

    }

}

void UniViewerTextItem::call()

{

    HbAction* action = qobject_cast<HbAction*>(sender());

    if(action)

    {

        QString phoneNumber = action->data().toString();

        phoneNumber.remove(NUMBER_RULE);

        //invoke dialer service and pass phoneNumber.        

        QString serviceName("com.nokia.services.telephony");

        QString operation("dial(QString)");

        XQServiceRequest* serviceRequest = new XQServiceRequest(serviceName,operation,false);

        connect(serviceRequest, SIGNAL(requestCompleted(QVariant)),

                this, SLOT(onServiceRequestCompleted()));

        connect(serviceRequest, SIGNAL(requestError(int)),

                this, SLOT(onServiceRequestCompleted()));

    }

}

void UniViewerTextItem::sendMessage()

{

    HbAction* action = qobject_cast<HbAction*>(sender());

    if(action)

    {

        QString phoneNumber = action->data().toString();

        phoneNumber.remove(NUMBER_RULE);

        //invoke editor & pass phoneNumber.

        emit sendMessage(phoneNumber);

    }

}

void UniViewerTextItem::createEmail()

{

    HbAction* action = qobject_cast<HbAction*>(sender());

    {

        QString emailId = action->data().toString();

        emailId.remove(EMAIL_RULE);

    }

}

void UniViewerTextItem::openLink()

{

    HbAction* action = qobject_cast<HbAction*>(sender());

    if(action)

    {

        QString url = action->data().toString();

        url.remove(URL_RULE);

        //invoke browser service  & pass url.

    }

}

void UniViewerTextItem::addToBookmarks()

{

    HbAction* action = qobject_cast<HbAction*>(sender());

    if(action)

    {

        QString url = action->data().toString();

        url.remove(URL_RULE);

        //invoke browser service to save url.

    }

}

void UniViewerTextItem::openContactInfo()

{

    HbAction* action = qobject_cast<HbAction*>(sender());

    if(action)

    {

        QList<QVariant> args;

        QString operation;

        QString data = action->data().toString();

        if(data.contains(QRegExp("^"+NUMBER_RULE)))

        {

            data.remove(NUMBER_RULE);

            int contactId = resolveContactId(data, 

                                             QContactPhoneNumber::DefinitionName,

                                             QContactPhoneNumber::FieldNumber);

            if(contactId > 0)

                {

                //open contact card

                operation = QString("open(int)");

                args << contactId;

                }

            else

                {

                //save to contacts with phone number field prefilled.

                operation = QString("editCreateNew(QString,QString)");

                QString type = QContactPhoneNumber::DefinitionName;

                args << type;

                args << data;

                }

        }

        else if(data.contains(QRegExp("^"+EMAIL_RULE)))

        {

            data.remove(EMAIL_RULE);

            int contactId = resolveContactId(data,

                                             QContactEmailAddress::DefinitionName,

                                             QContactEmailAddress::FieldEmailAddress);

            if(contactId > 0)

                {

                //open contact card

                operation = QString("open(int)");

                args << contactId;

                }

            else

                {

                //save to contacts with e-mail field prefilled.

                operation = QString("editCreateNew(QString,QString)");                

                QString type = QContactEmailAddress::DefinitionName;

                args << type;

                args << data;

                }

        }

        //service stuff.

    }

}

void UniViewerTextItem::saveToContacts()

{

    //handler for save to contacts.

}

void UniViewerTextItem::onServiceRequestCompleted()

    {

    //service request is now complete. delete it.

    XQServiceRequest* request = qobject_cast<XQServiceRequest*>(sender());

    if(request)

        {

        delete request;

        }

    }

int UniViewerTextItem::resolveContactId(const QString& value,

                                        const QString& fieldName,

                                        const QString& fieldType)

    {

    int contactId = -1;

    QContactManager phonebookManager("symbian");

    QContactDetailFilter phoneFilter;

    phoneFilter.setDetailDefinitionName(fieldName, fieldType);

    phoneFilter.setValue(value);

    phoneFilter.setMatchFlags(QContactFilter::MatchEndsWith);