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

**

** 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 HbInput 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 <hbinputmodeindicator.h>

#include <QPainter>

#include <QPointer>

#include <hbicon.h>

#include <hbinputmethod.h>

#include <hbinputeditorinterface.h>

#include <hbinputfocusobject.h>

#include <hbinputsettingproxy.h>

/// @cond

class HbInputModeIndicatorPrivate

{

public:

    HbInputModeIndicatorPrivate(HbInputButton *button);

    ~HbInputModeIndicatorPrivate();

    void updatePrediction();

public:

    HbInputButton *mButtonItem;

    QPointer<HbInputFocusObject> mFocusObject;

};

HbInputModeIndicatorPrivate::HbInputModeIndicatorPrivate(HbInputButton *button)

    : mButtonItem(button), mFocusObject(0)

{

    if (HbInputMethod::activeInputMethod()) {

        mFocusObject = HbInputMethod::activeInputMethod()->focusObject();

    }

}

HbInputModeIndicatorPrivate::~HbInputModeIndicatorPrivate()

{

}

void HbInputModeIndicatorPrivate::updatePrediction()

{

    const QString predictionOnIcon("qtg_mono_predictive_text_on");

    const QString predictionOffIcon("qtg_mono_predictive_text_off");

    QColor color;

    if (mButtonItem && !mButtonItem->icon(HbInputButton::ButtonIconIndexPrimary).isNull()) {

        color = mButtonItem->icon(HbInputButton::ButtonIconIndexPrimary).color();

    }

    HbIcon icon;

    if (HbInputSettingProxy::instance()->predictiveInputStatusForActiveKeyboard() &&

        mFocusObject && mFocusObject->editorInterface().isPredictionAllowed()) {

        icon = HbIcon(predictionOnIcon);

    } else {

        icon = HbIcon(predictionOffIcon);

    }

    icon.setColor(color);

    if (mButtonItem) {

        mButtonItem->setIcon(icon, HbInputButton::ButtonIconIndexPrimary);

    }

}

/// @endcond

/*!

@hbinput

\class HbInputModeIndicator

\brief Predictive mode indicator

Implements automatic mechanism which updates the prediction icon of keypad button based on current predictive status.

\sa HbEditorInterface

*/

HbInputModeIndicator::HbInputModeIndicator(HbInputButton *button, QGraphicsWidget *parent)

    : QObject(parent)

{

    mPrivate = new HbInputModeIndicatorPrivate(button);

    if (mPrivate->mFocusObject) {

        connect(&mPrivate->mFocusObject->editorInterface(), SIGNAL(modified()), this, SLOT(updateIndicator()));

    }

    connect(HbInputSettingProxy::instance(), SIGNAL(predictiveInputStateChanged(HbKeyboardSettingFlags, bool)),

            this, SLOT(updatePredictionStatus(HbKeyboardSettingFlags, bool)));

    updateIndicator(); // check mode of current editor

}

/*!

Destroys the widget.

*/

HbInputModeIndicator::~HbInputModeIndicator()

{

    delete mPrivate;

}

/*!

Updates the indicator.

*/

void HbInputModeIndicator::updateIndicator()

{

    if (!mPrivate->mFocusObject) {

        if (HbInputMethod::activeInputMethod()) {

            mPrivate->mFocusObject = HbInputMethod::activeInputMethod()->focusObject();

            if (mPrivate->mFocusObject) {

                connect(&mPrivate->mFocusObject->editorInterface(), SIGNAL(modified()), this, SLOT(updateIndicator()));

            } else {

                return;

            }

        } else {

            return;

        }

    }

    mPrivate->updatePrediction();

}

/*!

Updates prediction status.

*/

void HbInputModeIndicator::updatePredictionStatus(HbKeyboardSettingFlags keyboardType, bool newStatus)

{

    Q_UNUSED(keyboardType);

    Q_UNUSED(newStatus);

    mPrivate->updatePrediction();

}

// End of file