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

**

** 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 <hbinputbutton.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();

	void handleMultitapStarKey();

    bool handleAlphaEvent(int buttonId, HbKeyboardType type);

    bool buttonPressed(const QKeyEvent *keyEvent);

    bool buttonReleased(const QKeyEvent *keyEvent);

    void _q_timeout();

public:

    int mLastKey;

    bool mLongPressHappened;

    int mButtonDown;

	int mMultiTapNum;

	QChar mCurrentMultitapChar;

};

HbInputNumeric12KeyHandlerPrivate::HbInputNumeric12KeyHandlerPrivate():

    mLastKey(0), mLongPressHappened(false),

    mButtonDown(false),

	mMultiTapNum(0),

	mCurrentMultitapChar(0)

{

}

HbInputNumeric12KeyHandlerPrivate::~HbInputNumeric12KeyHandlerPrivate()

{

}

void HbInputNumeric12KeyHandlerPrivate::handleMultitapStarKey()

{

	HbInputFocusObject *focusObject = mInputMethod->focusObject();

	if (!focusObject) {

		return;

	}

	QChar MultitapStarKeyArray[] = {'*','+','p','w','\0'};

    int index = mMultiTapNum;

    do {

        mCurrentMultitapChar = MultitapStarKeyArray[mMultiTapNum];

        mMultiTapNum = (++mMultiTapNum)%4;

	    if (mCurrentMultitapChar != 0) {

            if (focusObject->characterAllowedInEditor(mCurrentMultitapChar)) {

		        QString str;

		        str += mCurrentMultitapChar;

		        QList<QInputMethodEvent::Attribute> list;

		        QInputMethodEvent event(str,list);

		        focusObject->sendEvent(event);

                return;

            }

	    }

    } while (index != mMultiTapNum);

}

bool HbInputNumeric12KeyHandlerPrivate::handleAlphaEvent(int buttonId, HbKeyboardType type)

{

    Q_Q(HbInputNumeric12KeyHandler);

    HbInputFocusObject *focusObject = 0;

    focusObject = mInputMethod->focusObject();

    if (!focusObject) {

        return false;

    }

    QChar character = 0;

	//This condition is to avoid get the characters mapped to Asterisk

	//Especially for Thai language we have mapped character to Asterisk

    if (buttonId != HbInputButton::ButtonKeyCodeAsterisk ||

        mInputMethod->currentKeyboardType() == HbKeyboardSctPortrait) {

        int index = 0;

        character = q->getNthCharacterInKey(index, buttonId, type);

	}

    if (character != 0) {

        q->commitAndUpdate(character);

        return true;

    }

    return false;

}

bool HbInputNumeric12KeyHandlerPrivate::buttonPressed(const QKeyEvent *keyEvent)

{

    Q_Q(HbInputNumeric12KeyHandler);

	HbInputFocusObject *focusObject = 0;

    focusObject = mInputMethod->focusObject();

    if (!focusObject) {

        return false;

    }

    int buttonId = keyEvent->key();

	mButtonDown = buttonId;

    if (keyEvent->isAutoRepeat() && mLastKey == buttonId) {

        if (buttonId == HbInputButton::ButtonKeyCodeShift) {

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

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

                mInputMethod->switchMode(buttonId);

                mLongPressHappened = true;

            }

        } else if (buttonId == HbInputButton::ButtonKeyCodeSymbol) {

            mInputMethod->selectSpecialCharacterTableMode();

            mLongPressHappened = true;

        } else if (buttonId == HbInputButton::ButtonKeyCodeAsterisk &&

            mLongPressHappened = true;

            mCurrentMultitapChar = QChar(HbInputButton::ButtonKeyCodeAsterisk);

            HbInputFocusObject *focusedObject = mInputMethod->focusObject();

            if (focusedObject) {

			    focusedObject->filterAndCommitCharacter(mCurrentMultitapChar);

            }

        	mCurrentMultitapChar = 0;

        }

        if (mLongPressHappened) {

            mLastKey = 0;

            return true;

        }

	}		   

	if (mInputMethod) {

		if (mLastKey != buttonId) {

			if (mCurrentMultitapChar !=0) {

                if (!focusObject->characterAllowedInEditor(mCurrentMultitapChar)) {

					focusObject->sendCommitString(QString());

                } else {

					QChar commitChar(mCurrentMultitapChar);

					mCurrentMultitapChar = 0;

					q->commitAndUpdate(commitChar);

				}

			}

		}

		if (buttonId == HbInputButton::ButtonKeyCodeAsterisk) {

			mTimer->stop();

			mTimer->start(HbMultiTapTimerTimeout);

		}

	} 

    mLastKey = buttonId;

    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;

    }

    int buttonId = keyEvent->key();

    if (mLongPressHappened) {

        mLongPressHappened = false;

        return false;

    }

    if (mTimer->isActive() && buttonId == Qt::Key_Shift) {

        mTimer->stop();

    }

    if (mLastKey != buttonId) {

		mMultiTapNum = 0;

    }

	mButtonDown = 0;

    if (buttonId == HbInputButton::ButtonKeyCodeAsterisk &&

        mInputMethod->currentKeyboardType() != HbKeyboardSctPortrait) {

        //Asterisk Key will multitap bettween *,+,p,w

        //mInputMethod->switchMode(buttonId);

		mLastKey = buttonId;

		handleMultitapStarKey();

        return true;

    } else if (buttonId == HbInputButton::ButtonKeyCodeSymbol) {

        mInputMethod->switchMode(buttonId);

    } else if (buttonId == HbInputButton::ButtonKeyCodeAlphabet) {

		mInputMethod->switchMode(buttonId);

		mLastKey = buttonId;

		return true;

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

        mInputMethod->closeKeypad();

        return true;

	} else if (buttonId == HbInputButton::ButtonKeyCodeShift) {

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

		mLastKey = buttonId;

        QChar 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;

        }

        mLastKey = buttonId;

        if (mInputMethod->currentKeyboardType() == HbKeyboardSctPortrait &&

            handleAlphaEvent(buttonId, mInputMethod->currentKeyboardType())) {

            return true;

        }

        q->commitFirstMappedNumber(buttonId, mInputMethod->currentKeyboardType());

        return true;

    }

    return false;

}

void HbInputNumeric12KeyHandlerPrivate::_q_timeout()

{

    mTimer->stop();

	mMultiTapNum = 0;

    HbInputFocusObject *focusedObject = mInputMethod->focusObject();

    if (!focusedObject) {

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

        return;

    }

    if (!mButtonDown) {

        if (mCurrentMultitapChar != 0) {

			focusedObject->filterAndCommitCharacter(mCurrentMultitapChar);

        }

	}

	mCurrentMultitapChar = 0;

}

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;

            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;

            }

            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;

}

// EOF