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

**

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

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtGui module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, 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 qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

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

#ifndef QCOEFEPINPUTCONTEXT_P_H

#define QCOEFEPINPUTCONTEXT_P_H

//

//  W A R N I N G

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

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#ifndef QT_NO_IM

#include "qinputcontext.h"

#include <qhash.h>

#include <qtimer.h>

#include <private/qcore_symbian_p.h>

#include <private/qt_s60_p.h>

#include <fepbase.h>

#include <aknedsts.h>

QT_BEGIN_NAMESPACE

class QCoeFepInputContext : public QInputContext,

                            public MCoeFepAwareTextEditor,

                            public MCoeFepAwareTextEditor_Extension1,

                            public MObjectProvider

{

    Q_OBJECT

public:

    QCoeFepInputContext(QObject *parent = 0);

    ~QCoeFepInputContext();

    QString identifierName() { return QLatin1String("coefep"); }

    QString language();

    void reset();

    void update();

    bool filterEvent(const QEvent *event);

    void mouseHandler( int x, QMouseEvent *event);

    bool isComposing() const { return !m_preeditString.isEmpty(); }

    void setFocusWidget(QWidget * w);

    void widgetDestroyed(QWidget *w);

    TCoeInputCapabilities inputCapabilities();

protected:

    void timerEvent(QTimerEvent *timerEvent);

private:

    void commitCurrentString(bool cancelFepTransaction);

    void updateHints(bool mustUpdateInputCapabilities);

    void applyHints(Qt::InputMethodHints hints);

    void applyFormat(QList<QInputMethodEvent::Attribute> *attributes);

    void queueInputCapabilitiesChanged();

    bool needsInputPanel();

    void commitTemporaryPreeditString();

private Q_SLOTS:

    void ensureInputCapabilitiesChanged();

    // From MCoeFepAwareTextEditor

public:

    void StartFepInlineEditL(const TDesC& aInitialInlineText, TInt aPositionOfInsertionPointInInlineText,

            TBool aCursorVisibility, const MFormCustomDraw* aCustomDraw,

            MFepInlineTextFormatRetriever& aInlineTextFormatRetriever,

            MFepPointerEventHandlerDuringInlineEdit& aPointerEventHandlerDuringInlineEdit);

    void UpdateFepInlineTextL(const TDesC& aNewInlineText, TInt aPositionOfInsertionPointInInlineText);

    void SetInlineEditingCursorVisibilityL(TBool aCursorVisibility);

    void CancelFepInlineEdit();

    TInt DocumentLengthForFep() const;

    TInt DocumentMaximumLengthForFep() const;

    void SetCursorSelectionForFepL(const TCursorSelection& aCursorSelection);

    void GetCursorSelectionForFep(TCursorSelection& aCursorSelection) const;

    void GetEditorContentForFep(TDes& aEditorContent, TInt aDocumentPosition, TInt aLengthToRetrieve) const;

    void GetFormatForFep(TCharFormat& aFormat, TInt aDocumentPosition) const;

    void GetScreenCoordinatesForFepL(TPoint& aLeftSideOfBaseLine, TInt& aHeight, TInt& aAscent,

            TInt aDocumentPosition) const;

private:

    void DoCommitFepInlineEditL();

    MCoeFepAwareTextEditor_Extension1* Extension1(TBool& aSetToTrue);

    void ReportAknEdStateEvent(MAknEdStateObserver::EAknEdwinStateEvent aEventType);

    // From MCoeFepAwareTextEditor_Extension1

public:

    void SetStateTransferingOwnershipL(MCoeFepAwareTextEditor_Extension1::CState* aState, TUid aTypeSafetyUid);

    MCoeFepAwareTextEditor_Extension1::CState* State(TUid aTypeSafetyUid);

    // From MObjectProvider

public:

    TTypeUid::Ptr MopSupplyObject(TTypeUid id);

    MObjectProvider *MopNext();

private:

    QSymbianControl *m_parent;

    CAknEdwinState *m_fepState;

    QString m_preeditString;

    Qt::InputMethodHints m_lastImHints;

    TUint m_textCapabilities;

    bool m_inDestruction;

    bool m_pendingInputCapabilitiesChanged;

    int m_cursorVisibility;

    int m_inlinePosition;

    MFepInlineTextFormatRetriever *m_formatRetriever;

    MFepPointerEventHandlerDuringInlineEdit *m_pointerHandler;

    int m_cursorPos;

    QBasicTimer m_tempPreeditStringTimeout;

    bool m_hasTempPreeditString;

};

QT_END_NAMESPACE

#endif // QT_NO_IM

#endif // QCOEFEPINPUTCONTEXT_P_H