/*

* 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: nmrecipientlineedit.cpp

* 

*/

#include "nmailuiwidgetsheaders.h"

static const QString Semicolon(";");

static const QString Delimiter("; ");

static const QRegExp CommaOrSemicolon("[,;]");

/*!

   Constructor

*/

NmRecipientLineEdit::NmRecipientLineEdit(QGraphicsItem *parent) 

    : NmHtmlLineEdit(parent),

    mNeedToGenerateEmailAddressList(true)

{

    connect(this, SIGNAL(textChanged(QString)), this, SLOT(handleTextChanged(QString)));

}

/*!

   Destructor

*/

NmRecipientLineEdit::~NmRecipientLineEdit()

{

}

/*!

   Get the emailaddress list generated from the content of the lineedit.

*/

QList<NmAddress> NmRecipientLineEdit::emailAddressList()

{

    if (mNeedToGenerateEmailAddressList) {

        // Empty mEmailAddressList.

        mEmailAddressList.clear();

        // Generate mEmailAddressList from the lineedit content.

        generateEmailAddressList();					

        mNeedToGenerateEmailAddressList = false;

    }

    return mEmailAddressList;	

}

#ifdef Q_OS_SYMBIAN

/*!

   This Slot inserts the selected contacts from Contacts-picker into the lineedit cursor position.    

   "You shouldn't be able to convert the parameter selectedContacts into a QStringlist or QString,

   you need to convert selectedContacts into a CntServicesContactList." -- Comments from 

   Contacts-picker author Erkinheimo Joonas (Nokia-D/Espoo)

   Contacts-Picker should be working in TB 10.1 MCL wk16 release, 

   Custom metatypes problem will be fixed in wk16 by QtHighway.

*/

void NmRecipientLineEdit::insertSelectedContacts(const QVariant &selectedContacts)

{

    if (!selectedContacts.isNull()) {

        CntServicesContactList contactList;

        contactList = qVariantValue<CntServicesContactList>(selectedContacts);

            // If this contact has no name.

            if(contactName.isEmpty()) {				

                QKeyEvent contactEmailAddressKeyEvent(QEvent::KeyPress, Qt::Key_unknown, 

                		                              Qt::NoModifier, contactEmailAddress);

                NmHtmlLineEdit::keyPressEvent(&contactEmailAddressKeyEvent);

            }

            else {

                for (int i = 0; i != mContactsSelectedFromPhoneBook.count(); ++i) {

                    if (mContactsSelectedFromPhoneBook.at(i).displayName() == contactName &&

                        // Differentiate this contact's name by adding a * mark

                        contactName.append("*");

                    }

                }

                // Generate custom keyevent for this contact's name.

                // Forward this contactNameKeyEvent to base class to handle.

                NmHtmlLineEdit::keyPressEvent(&contactNameKeyEvent);

            }

            // Generate custom keyevent for Delimiter("; ").

            // Forward the delimiterKeyEvent to base class to handle.

            NmHtmlLineEdit::keyPressEvent(&delimiterKeyEvent);

            // Form the contact into Qmail NmAddress format.

            NmAddress contact;

            contact.setAddress(contactEmailAddress);

            contact.setDisplayName(contactName);

            // Add this NmAddress formated contact into mContactsSelectedFromPhoneBook.

            mContactsSelectedFromPhoneBook.append(contact);

        }

    }

    else {

        //Request returned NULL 

    }

}

Q_IMPLEMENT_USER_METATYPE(CntServicesContact)

Q_IMPLEMENT_USER_METATYPE_NO_OPERATORS(CntServicesContactList)

#endif   // Q_OS_SYMBIAN

/*!

   keyPressEvent handles replacing user inputs "," or ";" from physical keyboard with "; "

   P.S. keyPressEvent can only catch QKeyEvent "," or ";" typed from physical keyboard,

   inputMethodEvent method handles user inputs "," or ";" from virtual keyboard.

*/

void NmRecipientLineEdit::keyPressEvent(QKeyEvent *keyEvent)

{

	bool eventHandled = false;

    if (keyEvent) {

        switch (keyEvent->key()) {    

        case Qt::Key_Comma:

        case Qt::Key_Semicolon:

            {

                QString textBeforeCursor = (this->text()).left(this->cursorPosition());

                // No action when the lineedit is empty or cursor is after a Delimiter("; ") 

                // or a Semicolon (";").

                if ((this->text()).isEmpty() || textBeforeCursor.endsWith(Delimiter)

                    || textBeforeCursor.endsWith(Semicolon)) {

                    keyEvent->ignore();

                    eventHandled = true;

                }

                else {

                    // Generate custom keyevent for Delimiter("; ") and 

                    // forward to the base class to handle.

                    QKeyEvent delimiterKeyEvent(keyEvent->type(), keyEvent->key(),

                                                keyEvent->modifiers(), Delimiter);

                    NmHtmlLineEdit::keyPressEvent(&delimiterKeyEvent);

                    eventHandled = true;

                }

            }

            break;

        default:

            NmHtmlLineEdit::keyPressEvent(keyEvent);

            eventHandled = true;

            break;      

        }

    }

    // If event is not handled, forward to the base class to handle.

    if (!eventHandled) {

        NmHtmlLineEdit::keyPressEvent(keyEvent);

    }

}

/*!

   inputMethodEvent handles replacing user inputs "," or ";" from virtual keyboard with "; ".

   P.S. keyPressEvent can only catch QKeyEvent "," or ";" typed from physical keyboard

*/

void NmRecipientLineEdit::inputMethodEvent(QInputMethodEvent *event)

{

	bool eventHandled = false;

    if (event) {

        QString eventText = event->commitString();

        if (!eventText.isEmpty() || event->replacementLength()) {

            // If typed charater from virtual keyboard is "," or ";"

            if (eventText.contains(CommaOrSemicolon)) {

                QString textBeforeCursor = (this->text()).left(this->cursorPosition());

                // No action when the lineedit is empty or cursor is after a Delimiter("; ") 

                // or Semicolon (";").

                if ((this->text()).isEmpty() || textBeforeCursor.endsWith(Delimiter)

                    || textBeforeCursor.endsWith(Semicolon)) {

                    event->ignore();

                    eventHandled = true;

                }

                else {

                    // Modify event with Delimiter("; ") and forward to the base class to handle.

                    event->setCommitString(Delimiter, event->replacementStart(),

                                           event->replacementLength()); 

                    NmHtmlLineEdit::inputMethodEvent(event);

                    eventHandled = true;

                }

            }

        }

    }

    // If event is not handled, forward to the base class to handle.

    if (!eventHandled) {

        NmHtmlLineEdit::inputMethodEvent(event);

    }

}

/*!

   Generate emailaddress list from the content of the lineedit.

*/

void NmRecipientLineEdit::generateEmailAddressList()

{   

    // Remove whitespace from the start and the end of the lineedit content. 

    QString contentOfLineedit = (this->text()).trimmed();

    // Split the lineedit content into individual items wherever a Semicolon(";") occurs, 

    // empty entries don't appear in the result.

    QStringList itemsOfLineeditContent = contentOfLineedit.split(Semicolon, QString::SkipEmptyParts);

    // Loop through all the items in the itemsOfLineeditContent list.

    for (int i = 0; i != itemsOfLineeditContent.count(); ++i) {

        // Remove whitespace from the start and the end of the item.

        QString itemInLineedit = itemsOfLineeditContent.at(i).trimmed();

        if (mContactsSelectedFromPhoneBook.count() > 0) {

            // Loop through all the elements in the mContactsSelectedFromPhoneBook list.

            for (int j = 0; j != mContactsSelectedFromPhoneBook.count(); ++j) {

                NmAddress contact = mContactsSelectedFromPhoneBook.at(j);		

                // If the item matches either the name or the emailaddress of this contact.

                if (itemInLineedit == contact.displayName() || itemInLineedit == contact.address()) {

                    // Add the contact into mEmailAddressList.

                    mEmailAddressList.append(contact);  

                }

                else {

                    // Form the item into Qmail NmAddress format.

                    NmAddress recipient;

                    recipient.setAddress(itemInLineedit);

                    // no display name info available, so don't us it

                    recipient.setDisplayName(QString()); 

                    // Add this NmAddress formated lineedit item into mEmailAddressList.

                    mEmailAddressList.append(recipient);  

                }

            }

        }

        else {

            // Form the item into Qmail NmAddress format.

            NmAddress recipient;

            recipient.setAddress(itemInLineedit);

            // no display name info available, so don't us it

            recipient.setDisplayName(QString()); 

            // Add this NmAddress formated lineedit item into mEmailAddressList.

            mEmailAddressList.append(recipient);  

        }

    }

}

/*!

   This Slot is called when the lineedit text changes.

*/

void NmRecipientLineEdit::handleTextChanged(const QString &text)

{

    Q_UNUSED(text);

    mNeedToGenerateEmailAddressList = true;

}