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

**

** 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.

**

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

#ifndef _VirtualQwerty_H

#define _VirtualQwerty_H

#include <QPointer>

#include <hbinputabstractbase.h>

#include <hbinputpredictioncallback.h>

#include <hbinputvirtualrocker.h>

#include <hbinputvkbwidget.h>

class QTimer;

class HbQwertyKeyboard;

class HbKeyMapData;

class HbPredictionEngine;

class HbCandidateList;

class HbExactWordPopup;

class HbInputSctLandscape;

class HbInputModeHandler;

class HbInputBasicQwertyHandler;

class HbInputPredictionQwertyHandler;

class HbInputNumericQwertyHandler;

class HbVirtualQwerty : public HbInputAbstractMethod

{

    Q_OBJECT

public:

    HbVirtualQwerty();

    ~HbVirtualQwerty();

public: // From QInputContext

    QString identifierName();

    bool isComposing() const;

    QString language();

    void reset();

    void mouseHandler(int x, QMouseEvent* aEvent);

    bool filterEvent(const QEvent* event);

public slots:

    void sctCharacterSelected(QString aChar);

    void orientationAboutToChange();

    void rockerDirection(int aDirection, HbInputVirtualRocker::RockerSelectionMode aSelectionMode);

    // keypad related slots

    void keypadClosed();

    void keypadCloseEventDetected(HbInputVkbWidget::HbVkbCloseMethod vkbCloseMethod);

    void flickEvent(HbInputVkbWidget::HbFlickDirection direction);

    void mouseMovedOutOfButton();

    void smileySelected(QString smiley);

public: // From HbInputMethod

    void focusReceived();

    void focusLost(bool focusSwitch);

    void inputStateActivated(const HbInputState& aNewState);

    void candidatePopupClosed(int closingKey);

    void inputLanguageChanged(const HbInputLanguage &aNewLanguage);

    void secondaryInputLanguageChanged(const HbInputLanguage &newLanguage);

    int displaySpecialCharacterTable(QObject* aReceiver);

    bool usePrediction() const;

public: //From HbAbstractQwerty

    QList<HbKeyPressProbability> probableKeypresses();

signals:

    void autoCompletionPopupClosed(QString word, int closingkey);

public:

    void initializeModeHandlers();

    void launchCandidatePopup(const QStringList &candidates);

    void closeKeypad();

    void launchCharacterPreviewPane(int key);

    void switchSpecialCharacterTable();

    void selectSpecialCharacterTableMode();

    void closeExactWordPopup();

    void launchExactWordPopup(QString exactWord);

    void closeAutoCompletionPopup();

    void launchAutoCompletionPopup(const QStringList &candidates);

protected:

    void predictiveInputStatusChanged(int newStatus);

private slots:

    void candidatePopupCancelled();

private:

    void initializePredictiveMode();

    void updateEditor();

    bool selectWord(bool selectFromLeft = true);

    void launchCandidatePopup();

    QPointF getCursorCoordinatePosition();

    void loadKeymap(const HbInputLanguage &newLanguage);

private:

    void openKeypad(HbInputVkbWidget * keypadToOpen, bool inMinimizedMode = false);

    HbQwertyKeyboard* constructKeypad(HbKeypadMode currentInputType);

private:

    // mCurrentKeypad contains currently active keypad, we dont need to have

    // anyother variables to tell us which is current keypad

    QPointer<HbInputVkbWidget> mCurrentKeypad;

    // contains qwerty alpha keypad

    QPointer<HbQwertyKeyboard> mQwertyAlphaKeypad;

    // contains qwerty numeric keypad

    QPointer<HbQwertyKeyboard> mQwertyNumericKeypad;

    // contains sct keypad

    QPointer<HbInputSctLandscape> mSctKeypad;

    const HbKeymap *mKeymap;

    HbFnState mFnState;

    HbInputState mPreviousInputState;

    HbExactWordPopup *mExactWordPopup;

    HbCandidateList *mCandidatePopup;

    bool mOrientationAboutToChange;

    HbInputVkbWidget::HbSctView mSctMode;

    int mShiftKeyState;

    // mode handlers

    HbInputModeHandler *mActiveModeHandler;

    HbInputBasicQwertyHandler *mBasicModeHandler;

    HbInputPredictionQwertyHandler *mPredictionModeHandler;

    HbInputNumericQwertyHandler *mNumericModeHandler;

    // vkbhost

    QPointer<HbVkbHost> mVkbHost;

};

#endif // _VirtualQwerty_H

// End of file