/*

 * 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 "msgeditorwidget.h"

// SYSTEM INCLUDES

#include <HbStyle>

#include <HbPushButton>

#include <HbTextItem>

#include <qgraphicsscene.h>

#include <HbFrameDrawer>

#include <HbFrameItem>

#include <HbAction>

#include <csmsaccount.h>

#include <smutset.h>

#include <hbmessagebox.h>

#include <hbcolorscheme.h>

#include <QColor>

#include <QTimer>

#include "unieditorpluginloader.h"

#include "unieditorplugininterface.h"

#include "UniSendingSettings.h"

#include "UniEditorGenUtils.h"

#include "debugtraces.h"

// LOCAL CONSTANTS

const QString SEND_ICON("qtg_mono_send");

const QString BACKGROUND("qtg_fr_input_v_bg");

const QString BACKGROUND_FRAME("qtg_fr_messaging_char_count");

const QString CHAR_COUNTER_COLOR("qtc_messaging_char_count");

const QString SEND_BUTTON_NORMAL("qtg_fr_btn_green_normal");

const QString SEND_BUTTON_PRESSED("qtg_fr_btn_green_pressed");

const QString SEND_BUTTON_DISABLED("qtg_fr_btn_disabled");

const QString SEND_BUTTON_NORMAL_COLOR("qtc_callhandling_answer_normal");

const QString SEND_BUTTON_PRESSED_COLOR("qtc_callhandling_answer_pressed");

const QString SEND_BUTTON_DISABLED_COLOR("qtc_button_disabled");

#define LOC_SMS_CHAR_LIMIT_REACHED hbTrId("txt_messaging_dialog_sms_character_count_exceeded")

#define LOC_HINT_TEXT hbTrId("txt_messaging_formlabel_enter_message_here")

const TInt KShowCounterLimit = 10;

QGraphicsItem* FOCUSITEM = 0;

//---------------------------------------------------------------

// MsgEditorWidget::MsgEditorWidget

// @see header

//---------------------------------------------------------------

MsgEditorWidget::MsgEditorWidget(QGraphicsItem *parent) :

    HbWidget(parent), mMsgEditor(0), mSendButton(0), mPluginInterface(0), mPluginLoader(0),

        mSmsCharLimitReached(false)

{

    //setting background.

    HbFrameItem* backGround = new HbFrameItem(this);

    backGround->frameDrawer().setFrameGraphicsName(BACKGROUND);

    backGround->frameDrawer().setFrameType(HbFrameDrawer::ThreePiecesVertical);

    backGround->frameDrawer().setFillWholeRect(true);

    this->setBackgroundItem(backGround); 

    // Initialize the widget.

    init();

}

//---------------------------------------------------------------

// MsgEditorWidget::init

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::init()

{

    // Create mandatory element of mesh layout.

    mMsgEditor = new MsgEditor(this);

    mMsgEditor->setMaxRows(3); // NOTE: Don't remove this line.

    HbStyle::setItemName(mMsgEditor, "msgEditor");

	mSendButton = new HbPushButton(this); 

    HbStyle::setItemName(mSendButton, "sendButton"); 

    mSendButton->setEnabled(false); 

    HbFrameItem* backGround = new HbFrameItem(this); 

    backGround->frameDrawer().setFrameType(HbFrameDrawer::NinePieces); 

    mSendButton->setBackgroundItem(backGround); 

    updateButtonBackgroundAndColor(SEND_BUTTON_DISABLED,SEND_BUTTON_DISABLED_COLOR); 

    mSendButton->setIcon(HbIcon(SEND_ICON));

    mCharCounter = new HbTextItem(this);

    HbStyle::setItemName(mCharCounter, "charCounter");

    mCharCounter->setZValue(1.5);

    QColor color = HbColorScheme::color(CHAR_COUNTER_COLOR);

    mCharCounter->setTextColor(color);

    mBackgroundItem = new HbFrameItem(this);

    HbStyle::setItemName(mBackgroundItem, "charCounterFrame");

    mBackgroundItem->frameDrawer().setFrameType(HbFrameDrawer::ThreePiecesHorizontal);

    mBackgroundItem->frameDrawer().setFillWholeRect(true);

    mBackgroundItem->frameDrawer().setFrameGraphicsName(

        BACKGROUND_FRAME);    

    //Create editor utils object

    mEditorUtils = q_check_ptr(new UniEditorGenUtils());

    FOCUSITEM = mSendButton;

    connect(mSendButton, SIGNAL(clicked()),this, SLOT(onClicked()));

    connect(mSendButton, SIGNAL(pressed()),this, SLOT(onPressed()));

    connect(mSendButton, SIGNAL(released()),this, SLOT(onReleased()));

    connect(mMsgEditor, SIGNAL(replyStarted()),this, SIGNAL(replyStarted()));

    connect(mMsgEditor, SIGNAL(textChanged(QString)),this,SLOT(onTextChanged(QString)));

}

//---------------------------------------------------------------

// MsgEditorWidget::~MsgEditorWidget

// @see header

//---------------------------------------------------------------

MsgEditorWidget::~MsgEditorWidget()

{

    delete mEditorUtils;

}

//---------------------------------------------------------------

// MsgEditorWidget::content

// @see header

//---------------------------------------------------------------

QString MsgEditorWidget::content() const

{

    return mMsgEditor->text();

}

//---------------------------------------------------------------

// MsgEditorWidget::setContent

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::setContent(const QString &text)

{

    mMsgEditor->setText(text);

}

//---------------------------------------------------------------

// MsgEditorWidget::clear

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::clear()

{

    mMsgEditor->setText(QString());

    mMsgEditor->setCursorVisibility(Hb::TextCursorHidden);

}

//---------------------------------------------------------------

// MsgEditorWidget::onTextChanged

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::onTextChanged(const QString& str)

{

    //If char limit is already reached we are about to show the sms limit dialog

    //So we need not process the additional character entered

    if(mSmsCharLimitReached)

    {

        return;

    }

    if(str.length() > 0 )

        {

        if(!mSendButton->isEnabled())

            {

            mSendButton->setFocusProxy(mMsgEditor);

            mSendButton->setEnabled(true);

            updateButtonBackgroundAndColor(SEND_BUTTON_NORMAL,SEND_BUTTON_NORMAL_COLOR);

            }

        }

    else

        {

        if(mSendButton->isEnabled())

            {

            mSendButton->setFocusProxy(0);

            mSendButton->setEnabled(false);

            updateButtonBackgroundAndColor(SEND_BUTTON_DISABLED,SEND_BUTTON_DISABLED_COLOR);

            }

        }

    //Check done for optimization

    //Only if content is deleted we need to call encodingsettings again

    if (mPrevBuffer.isEmpty() || str.size() <= mPrevBuffer.size())

    {

        mPluginInterface->setEncodingSettings(EFalse,ESmsEncodingNone,mCharSupportType);

    }

    TInt numOfRemainingChars;

    TInt numOfPDUs;

    TBool unicodeMode;

    TSmsEncoding alternativeEncodingType;

    QString string = str;

    mPluginInterface->getNumPDUs(string, numOfRemainingChars, numOfPDUs,

        unicodeMode, alternativeEncodingType);

    //Set char counter value

    QString display = QString("%1(%2)").arg(numOfRemainingChars).arg(numOfPDUs);

    mCharCounter->setText(display);

    if(numOfPDUs > 1 || numOfRemainingChars <= KShowCounterLimit  )

    {

        mCharCounter->setVisible(true);

        mBackgroundItem->setVisible(true);

    }

    else

    {

        mCharCounter->setVisible(false);

        mBackgroundItem->setVisible(false);

    }

    //Check if sms segment limit has been reached

    bool unicode = (unicodeMode) ? true : false;

    int contentSize = mEditorUtils->UTF8Size(string);

    int maxSmsSize =  0;

    TRAP_IGNORE(maxSmsSize = mEditorUtils->MaxSmsMsgSizeL(unicode));

    if(contentSize > maxSmsSize)

    {        

        //Give breathing time for ITUT to complete its processing

        //without this there is a crash as ITUT cant complete its processing

        mSmsCharLimitReached = true;

        QTimer::singleShot(50, this, SLOT(handleSmsCharLimitReached()));   

        if(mPrevBuffer.isEmpty())

        {

            //Chop the last char and set it to the editor

            string.chop(1);

            mPrevBuffer = string;

        }

    }

    else

    {                

        //Save the previous buffer

        mPrevBuffer = string;        

    }

}

//---------------------------------------------------------------

// MsgEditorWidget::handleSmsCharLimitReached

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::handleSmsCharLimitReached()

{

    mSmsCharLimitReached = false;

    HbMessageBox::question(LOC_SMS_CHAR_LIMIT_REACHED,

                           this,SLOT(onSmsCharLimitReached(HbAction*)),

                           HbMessageBox::Ok | HbMessageBox::Cancel);

}

//---------------------------------------------------------------

// MsgEditor::onClicked

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::onClicked()

    {    

    mSendButton->setFocusProxy(0);

    mMsgEditor->setFocusProxy(mSendButton);

    this->scene()->clearFocus();

    this->scene()->setFocusItem(mSendButton);

    mMsgEditor->setFocusProxy(0);

    mMsgEditor->setCursorVisibility(Hb::TextCursorHidden);

    emit sendMessage();

    }

//---------------------------------------------------------------

// MsgEditor::updateButtonBackgroundAndColor

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::updateButtonBackgroundAndColor(const QString& bg,const QString& iconColor) 

    { 

    HbFrameItem* drawer = static_cast<HbFrameItem*>(mSendButton->backgroundItem()); 

    if(drawer) 

        { 

        drawer->frameDrawer().setFrameGraphicsName(bg);   

        } 

    QColor color = HbColorScheme::color(iconColor);

    if(color.isValid())

    	 {

    	 mSendButton->icon().setColor(color);

    	 }	    

    } 

//---------------------------------------------------------------

// MsgEditor::onPressed

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::onPressed()

    {

    updateButtonBackgroundAndColor(SEND_BUTTON_PRESSED,SEND_BUTTON_PRESSED_COLOR);

    }

//---------------------------------------------------------------

// MsgEditor::onReleased

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::onReleased()

    {

    updateButtonBackgroundAndColor(SEND_BUTTON_NORMAL,SEND_BUTTON_NORMAL_COLOR);

    }

//---------------------------------------------------------------

// MsgEditor::setEncodingSettingsL

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::setEncodingSettingsL()

{ 

    if( mPluginLoader )

    {

        delete mPluginLoader;

    }

    mPluginLoader = new UniEditorPluginLoader(this);

    mPluginInterface =

                        mPluginLoader->getUniEditorPlugin(ConvergedMessage::Sms);    

    QT_TRAP_THROWING( CSmsSettings* settings = CSmsSettings::NewLC();

        CSmsAccount* account = CSmsAccount::NewLC();

        account->LoadSettingsL( *settings );

        if( settings->CharacterSet() == TSmsDataCodingScheme::ESmsAlphabetUCS2)

        {

            mCharSupportType = TUniSendingSettings::EUniCharSupportFull;

        }

        else

        {

            mCharSupportType = TUniSendingSettings::EUniCharSupportReduced;

        }

        CleanupStack::PopAndDestroy( account );

        CleanupStack::PopAndDestroy( settings ));

    //Set the mPrevBuffer to NULL initially

    mPrevBuffer = QString();

    mSmsCharLimitReached = false;

    mCharCounter->setVisible(false);

    mBackgroundItem->setVisible(false);

}

//---------------------------------------------------------------

// MsgEditor::MsgEditor

// @see header

//---------------------------------------------------------------

MsgEditor::MsgEditor(QGraphicsItem *parent)

:HbLineEdit(parent)

    {

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

     this->setPlaceholderText(LOC_HINT_TEXT);

    }

//---------------------------------------------------------------

// MsgEditor::focusInEvent

// @see header

//---------------------------------------------------------------

void MsgEditor::focusInEvent(QFocusEvent *event)

	{

	HbLineEdit::focusInEvent(event);

    FOCUSITEM->setFocusProxy(this);

    setCursorVisibility(Hb::TextCursorVisible);

    emit replyStarted();    

	}

//---------------------------------------------------------------

// MsgEditor::focusOutEvent

// @see header

//---------------------------------------------------------------

void MsgEditor::focusOutEvent(QFocusEvent * event)

    {

    FOCUSITEM->setFocusProxy(0);

    setCursorVisibility(Hb::TextCursorHidden);

    HbLineEdit::focusOutEvent(event);  

    }

//---------------------------------------------------------------

// MsgEditor::onSmsCharLimitReached

// @see header

//---------------------------------------------------------------

void MsgEditorWidget::onSmsCharLimitReached(HbAction* action)

{

    HbMessageBox *dlg = qobject_cast<HbMessageBox*> (sender());

    if (action == dlg->actions().at(0)) {

        //Launch UniEditor 

        emit smsCharLimitReached();

    }

    else {

        //Set the previous content

        setContent( QString(mPrevBuffer));

    }

}

// EOF