/*

* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include "cxutils.h"

#include "cxeengine.h"

#include "cxuisettingsinfo.h"

#include "cxesettings.h"

#include "cxuisettingradiobuttonlist.h"

#include "cxuisettingradiobuttonlistmodel.h"

CxuiSettingRadioButtonList::CxuiSettingRadioButtonList(QGraphicsItem *parent, CxeEngine *engine)

: HbRadioButtonList(parent),

  mEngine(engine),

  mSettingId(),

  mSettingValues(),

  mOriginalIndex(0)

{

    CX_ASSERT_ALWAYS(mEngine);

    mListModel = new CxuiSettingRadioButtonListModel();

    setModel(mListModel);

    // connect the signals again

    connect(this, SIGNAL(itemSelected(int)), this, SLOT(handleItemSelected(int)));

}

/*!

* Init contents of the listbox and select current setting value.

*/

void CxuiSettingRadioButtonList::init(CxUiSettings::RadioButtonListParams *data)

{

    // first we reset the model and clear any previous data

    mSettingValues.clear();

    mListModel->resetModel();

    disconnect(SIGNAL(valueSelected(int)));

    if (data) {

        QStringList settingStrings;

        mSettingValues.clear();

        CxUiSettings::SettingItem setting;

        foreach (setting, data->mSettingPairList) {

            CX_DEBUG(("CxuiSettingRadioButtonList - appending setting value: %s", setting.mValue.toString().toAscii().data()));

            settingStrings.append(setting.mItem); // setting string

            mSettingValues.append(setting.mValue); // engine value for setting

        }

        // Set the setting strings to the model.

        setItems(settingStrings);

        // Set the preview mode.

        // Note: We implement preview ourselves, not with HbRadioButtonList preview mode.

        setPreviewMode(HbRadioButtonList::NoPreview);

        mPreview = data->mPreview;

        setSettingId(data->mSettingId);

        setListBoxType(data->mListboxType);

        // Store the original setting value and focus matching item.

        QString value = mEngine->settings().get<QString>(mSettingId, "");

        CX_DEBUG(("CxuiSettingRadioButtonList - original value: [%s]", qPrintable(value)));

        setOriginalSelectedItemByValue(QVariant(value));

    }

}

/*!

 * Sets the original selection of list by value. Can be used to override value read from

 * CxeSettings or used to remember previously selected value in case of setting that is

 * not read from CxeSettings (e.g. selftimer)

 */

void CxuiSettingRadioButtonList::setOriginalSelectedItemByValue(const QVariant &value)

{

    CX_DEBUG_ENTER_FUNCTION();

    // Find the index of given value among setting values.

    // Default to first item, if given value is not found.

    int index = mSettingValues.indexOf(QVariant(value));

    if (index < 0) {

        CX_DEBUG(("[WARNING] Value [%s] not found, selecting first item", qPrintable(value.toString())));

        index = 0;

    }

    // Store the original value.

    mOriginalIndex = index;

    // Select the index with current value item.

    setSelected(index);

    // Ensure that currently selected item is visible.

    scrollTo(currentIndex());

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Set list texts.

* @param values List of the texts.

*/

void CxuiSettingRadioButtonList::setItems(const QStringList &values)

{

    mListModel->setItems(values);

}

/*!

* Set the type of this list.

* @param type Type identifier, SingleLine or TwoLine.

*/

void CxuiSettingRadioButtonList::setListBoxType(int type)

{

    mListModel->setListBoxType(type);

}

/*!

* Set id of the setting this list represents.

* @param id Id of the setting.

*/

void CxuiSettingRadioButtonList::setSettingId(const QString &id)

{

    // Selected item is updated, when this list is shown.

    mSettingId = id;

}

/*!

* Handle selecting an item.

* @param index Index of the selected item in list.

*/

void CxuiSettingRadioButtonList::handleItemSelected(int index)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (mPreview) {

        commit(index);

    } else {

        // no action needed

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

    This slot can be used to set the selection accepted.

*/

void CxuiSettingRadioButtonList::handleSelectionAccepted()

{

    CX_DEBUG_ENTER_FUNCTION();

    // Ok button pressed. Update originally selected item,

    // which is the one that always get's set when closing.

    mOriginalIndex = selected();

    emit selectionCommitted();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Handle closing the listbox. If the current selection was accepted,

* we commit the new value here. If current selection has been cancelled,

* we commit the original value.

*/

void CxuiSettingRadioButtonList::handleClose()

{

    CX_DEBUG_ENTER_FUNCTION();

    if (!mSettingId.isEmpty()) {

        // If handleSelectionAccepted was called, this now contains the new index,

        // otherwise the original one is selected.

        commit(mOriginalIndex);

    }

    // clear settings id so setting value doesn't get updated by

    // accident when updating ui appearance

    mSettingId.clear();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

  Commits value to settings.

*/

void CxuiSettingRadioButtonList::commit(int index)

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG(("CxuiSettingRadioButtonList - id: %s", qPrintable(mSettingId)));

    if (!mSettingId.isEmpty() && !mSettingValues.isEmpty()) {

        QVariant value = mSettingValues.at(index);

        if (value.type() == QVariant::Int) {

            CX_DEBUG(("CxuiSettingRadioButtonList - index:%d value:%d", index, value.toInt()));

            // Don't set the value again, if it is the current value.

            // For e.g. video quality it would result in re-preparation etc.

            try {

                int current = mEngine->settings().get<int>(mSettingId);

                if (current != value.toInt()) {

                    mEngine->settings().set(mSettingId, value.toInt());

                }

            } catch (CxeException &e) {

                // ignore error

            }

            // inform interested clients about value changed event

            emit valueSelected(value.toInt());

        } else if (value.type() == QVariant::String) {

            CX_DEBUG(("CxuiSettingRadioButtonList - index:%d value:[%s]", index, qPrintable(value.toString())));

            try {

                QString current = mEngine->settings().get<QString>(mSettingId);

                CX_DEBUG(("CxuiSettingRadioButtonList - settings model value:[%s]", qPrintable(current)));

                // If the changed setting is a scene mode, we need to reset it

                // because a scene mode related setting might have changed

                // even though the scene mode itself hadn't

                if (current != value.toString() ||

                    mSettingId == CxeSettingIds::IMAGE_SCENE ||

                    mSettingId == CxeSettingIds::VIDEO_SCENE) {

                    mEngine->settings().set(mSettingId, value.toString());

                }

            } catch (CxeException &e) {

                // ignore error

            }

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

}

// end of file