/*

* 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)

{

    NM_FUNCTION;

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

}

/*!

   Destructor

*/

NmRecipientLineEdit::~NmRecipientLineEdit()

{

    NM_FUNCTION;

}

/*!

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

*/

QList<NmAddress> NmRecipientLineEdit::emailAddressList()

{

    NM_FUNCTION;

    if (mNeedToGenerateEmailAddressList) {

        // Empty mEmailAddressList.

        mEmailAddressList.clear();

        // Generate mEmailAddressList from the lineedit content.

        generateEmailAddressList();					

        mNeedToGenerateEmailAddressList = false;

    }

    return mEmailAddressList;	

}

#ifdef Q_OS_SYMBIAN

/*!

   This Slot appends the selected contacts to the end of the lineedit content.    

*/

void NmRecipientLineEdit::addSelectedContacts(const QVariant &selectedContacts)

{

    NM_FUNCTION;

    // If user selected contact

    if (!selectedContacts.isNull()) {        

        // If the lineedit is not empty and if there is no ";" or "; " at the end,

        // add a delimiter("; ") at the end.

        if (this->text().length() != 0 && !(this->text().endsWith(Semicolon)) && 

            !(this->text().endsWith(Delimiter))){

            // Move cursor to the end of the lineedit.

            this->setCursorPosition(this->text().length());       

            QTextCursor textCursor(this->textCursor());

            // Append delimiter("; ") to the end of the lineedit

            textCursor.insertText(Delimiter);

        }

        CntServicesContactList contactList = qVariantValue<CntServicesContactList>(selectedContacts);

        // Loop through all the selected contacts.

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

            QString contactName = contactList[i].mDisplayName;

            QString contactEmailAddress = contactList[i].mEmailAddress;

            // If this contact has no name, use it's emailaddress as the display name

            if(contactName.isEmpty()) {	

                // Move cursor to the end of the lineedit.

                this->setCursorPosition(this->text().length());       

                QTextCursor textCursor(this->textCursor());

                // Append contactEmailAddress to the end of the lineedit

                textCursor.insertText(contactEmailAddress);

            }

            // If this contact has name, use the name as the display name

            else {

                // Handle a rare case: there are contacts has same name but different emailaddress.

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

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

                  	    mRecipientsAddedFromContacts.at(i).address() != contactEmailAddress) {

                        // Differentiate this contact by supplying it's emailaddress

                        contactName.append("<");

                        contactName.append(contactEmailAddress);

                        contactName.append(">");

                    }

                }

                // Move cursor to the end of the lineedit.

                this->setCursorPosition(this->text().length());       

                QTextCursor textCursor(this->textCursor());

                // Append contactName to the end of the lineedit

                textCursor.insertText(contactName);

            }

            QTextCursor textCursor(this->textCursor());

            // Append delimiter("; ")

            textCursor.insertText(Delimiter);

            // Form the contact into Qmail NmAddress format.

            NmAddress contact;

            contact.setAddress(contactEmailAddress);

            contact.setDisplayName(contactName);

            // Add this NmAddress formated contact into mRecipientsAddedFromContacts.

            mRecipientsAddedFromContacts.append(contact);

    }

    else {

        //Request returned NULL 

        NM_COMMENT("ContactsPicker 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)

{

    NM_FUNCTION;

	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)

{

    NM_FUNCTION;

	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 a list of all the email addresses from the content of the lineedit.

*/

void NmRecipientLineEdit::generateEmailAddressList()

{   

    NM_FUNCTION;

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

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

    // Split the lineedit content by semicolon(";").

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

    // Loop through all the items of the lineedit content.

    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();

        // Get the count of the recipients added from Contacts.

        int countOfRecipientsAddedFromContacts = mRecipientsAddedFromContacts.count();

        // If there is recipient added from Contacts.

        if (countOfRecipientsAddedFromContacts > 0) {

            QStringList listOfAddedContactsName;

            QStringList listOfAddedContactsAddress;

            // Loop through all the recipients added from Contacts.

            for (int j = 0; j != countOfRecipientsAddedFromContacts; ++j) {

                NmAddress contact = mRecipientsAddedFromContacts.at(j);          

                listOfAddedContactsName.append(contact.displayName());

                listOfAddedContactsAddress.append(contact.address());

            }

            int indexInAddedContactsName = listOfAddedContactsName.indexOf(itemInLineedit);

            int indexInAddedContactsAddress = listOfAddedContactsAddress.indexOf(itemInLineedit);

            // If this itemInLineedit matches the name of one added contact.

            if (indexInAddedContactsName >= 0) {

                // Add the recipient into mEmailAddressList.

                mEmailAddressList.append(mRecipientsAddedFromContacts.at(indexInAddedContactsName));  

            }

            // If this itemInLineedit matches the emailaddress of one added contact.

            else if (indexInAddedContactsAddress >= 0) { 

                // Add the recipient into mEmailAddressList.

                mEmailAddressList.append(mRecipientsAddedFromContacts.at(indexInAddedContactsAddress));  

            }

            // This itemInLineedit is not added from Contacts

            else { 

                // Form the item into NmAddress format.

                NmAddress recipient;

                recipient.setAddress(itemInLineedit);

                // There is no display name info available, so leave display name empty.

                recipient.setDisplayName(QString()); 

                // Add this NmAddress formated lineedit item into mEmailAddressList.

                mEmailAddressList.append(recipient);  

            }

        }

        else { // There is no recipient is added from Contacts

            // Form the item into NmAddress format.

            NmAddress recipient;

            recipient.setAddress(itemInLineedit);

            // There is no display name info available, so leave display name emapty.

            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)

{

    NM_FUNCTION;

    Q_UNUSED(text);

    mNeedToGenerateEmailAddressList = true;

}