/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbPlugins module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include <QTimer>

#include <hbinputmethod.h>

#include <hbinputkeymapfactory.h>

#include "hbinputnumeric12keyhandler.h"

#include "hbinputnumerichandler_p.h"

#include "virtual12key.h"

#include "hbinputabstractbase.h"

class HbInputNumeric12KeyHandlerPrivate: public HbInputNumericHandlerPrivate

{

    Q_DECLARE_PUBLIC(HbInputNumeric12KeyHandler)

public:

    HbInputNumeric12KeyHandlerPrivate();

    ~HbInputNumeric12KeyHandlerPrivate();

    bool buttonPressed(const QKeyEvent *keyEvent);

    bool buttonReleased(const QKeyEvent *keyEvent);

    void _q_timeout();

public:

    int mLastKey;

    bool mButtonDown;

};

HbInputNumeric12KeyHandlerPrivate::HbInputNumeric12KeyHandlerPrivate():

    mLastKey(0),

    mButtonDown(false)

{

}

HbInputNumeric12KeyHandlerPrivate::~HbInputNumeric12KeyHandlerPrivate()

{

}

bool HbInputNumeric12KeyHandlerPrivate::buttonPressed(const QKeyEvent *keyEvent)

{

	int buttonId = keyEvent->key();

	mButtonDown = true;

	mLastKey = buttonId;

    mTimer->stop();

    if (buttonId == Qt::Key_Control) {

        mLastKey = buttonId;        

        mTimer->start(HbLongPressTimerTimeout);

        return true;

    } else if (buttonId == Qt::Key_Shift) {

        mTimer->start(HbLongPressTimerTimeout);

		return true;

	}		              

    return false;

}

/*!

Handles the key release events from the VKB. Launches the SCT with key release event of

asterisk.

*/

bool HbInputNumeric12KeyHandlerPrivate::buttonReleased(const QKeyEvent *keyEvent)

{

    Q_Q(HbInputNumeric12KeyHandler);

    HbInputFocusObject *focusObject = 0;

    focusObject = mInputMethod->focusObject();

    if (!focusObject || !mButtonDown) {

        qDebug("HbInputModeHandler::buttonReleased no focusObject ... failed!!");

        return false;

    }

	if(mTimer->isActive()) {

		mTimer->stop();

	}

	int buttonId = keyEvent->key();

	mButtonDown = false;

    if (buttonId == Qt::Key_Asterisk || buttonId == Qt::Key_Control) {

        //Same asterisk key is used for launching candidate list (long key press)

        //and also for SCT. So, do not launch SCT if candidate list is already launched.

        mInputMethod->switchMode(buttonId);

        return true;

    } else if (buttonId == Qt::Key_Return) {

        mInputMethod->closeKeypad();

        return true;

	} else if ( buttonId == Qt::Key_Shift && mLastKey == buttonId ) {

		//Let's commit character "#" on single tap and double tap of shift Key

		QChar qc(keyEvent->key());

		qc = QChar('#');

		q->commitAndUpdate(qc);

		return true;			

    } else if (buttonId >= 0) {

        // Let's see if we can get the handler for this button in the base class.

        if (q->HbInputNumericHandler::filterEvent(keyEvent)) {

            return true;

        }

        q->commitFirstMappedNumber(buttonId);

        return true;

    }

    return false;

}

void HbInputNumeric12KeyHandlerPrivate::_q_timeout()

{

	Q_Q(HbInputNumeric12KeyHandler);

    mTimer->stop();

    HbInputFocusObject *focusedObject = 0;

    focusedObject = mInputMethod->focusObject();

    if (!focusedObject) {

        qDebug("HbInputNumeric12KeyHandler::timeout focusObject == 0");

        return;

    }

    //switch to Alpha mode when Long key press of Shift key is received

    if (mButtonDown)

    {

        mButtonDown = false;

		if (mLastKey == Qt::Key_Shift) {

			// If the editor is not a number only editor, then activate the alphanumeric keypad

            if( !focusedObject->editorInterface().isNumericEditor() ) {

				mInputMethod->switchMode(mLastKey);

				mLastKey = 0;

			}

			else

			{

				q->commitAndUpdate(QChar('#'));

			}

        }

		else if (mLastKey == Qt::Key_Control)

		{

			mInputMethod->switchMode(Qt::Key_Control);

		}

    }

}

HbInputNumeric12KeyHandler::HbInputNumeric12KeyHandler(HbInputAbstractMethod* inputMethod)

:HbInputNumericHandler( *new HbInputNumeric12KeyHandlerPrivate, inputMethod)

{

    Q_D(HbInputNumeric12KeyHandler);

    d->q_ptr = this;

}

HbInputNumeric12KeyHandler::~HbInputNumeric12KeyHandler()

{

}

/*!

 filterEvent function for handling different keyevents.

*/

bool HbInputNumeric12KeyHandler::filterEvent(const QKeyEvent * event)

{

    Q_D(HbInputNumeric12KeyHandler);

    if (event->type() == QEvent::KeyPress) {

        return d->buttonPressed(event);

    } else if (event->type() == QEvent::KeyRelease) {

        return d->buttonReleased(event);

    }

    return false;

}

/*!

 Action handler

*/

bool HbInputNumeric12KeyHandler::actionHandler(HbInputModeAction action)

{

	Q_D(HbInputNumeric12KeyHandler);

    bool ret = false;

    switch (action) {

		case HbInputModeHandler::HbInputModeActionCancelButtonPress:

        case HbInputModeHandler::HbInputModeActionReset:

			d->mLastKey = 0;

        	d->mButtonDown = false;

			d->mTimer->stop();

			break;

        //In case of the numeric editor the character is already committed.

        //Need to remove the committed character.

        case HbInputModeHandler::HbInputModeActionDeleteAndCommit: {

            HbInputFocusObject *focusObject = 0;

            focusObject = d->mInputMethod->focusObject();

            if (!focusObject) {

                return false;

            }

            d->mTimer->stop();

            if (focusObject->editorCursorPosition()) {

                QString empty;

                QList<QInputMethodEvent::Attribute> list;

                QInputMethodEvent event(QString(), list);

                event.setCommitString(empty, -1, 1);

                focusObject->sendEvent(event);

                ret = true;

            }

            break;

        }

        default: {

            ret = false;

        }

    }

    if(!ret) {

        ret = HbInputNumericHandler::actionHandler(action);

    }

    return ret;

}

/*!

 list different input modes.

*/

void HbInputNumeric12KeyHandler::listInputModes(QVector<HbInputModeProperties>& modes) const

{

    HbInputModeProperties binding;

    binding.iMode = HbInputModeNumeric;

    binding.iKeyboard = HbKeyboardVirtual12Key;

    QList<HbInputLanguage> languages = HbKeymapFactory::availableLanguages();

    foreach (HbInputLanguage language, languages) {

        binding.iLanguage = language;

        modes.push_back(binding);

    }

}

// EOF