camerauis/cameraxui/cxui/src/cxuisettingradiobuttonlist.cpp
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/*
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* Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "cxutils.h"
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#include "cxeengine.h"
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#include "cxuisettingsinfo.h"
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#include "cxesettings.h"
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#include "cxuisettingradiobuttonlist.h"
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#include "cxuisettingradiobuttonlistmodel.h"
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CxuiSettingRadioButtonList::CxuiSettingRadioButtonList(QGraphicsItem *parent, CxeEngine *engine)
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: HbRadioButtonList(parent),
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  mEngine(engine),
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  mSettingId(),
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  mSettingValues(),
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  mOriginalIndex(0)
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{
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    CX_ASSERT_ALWAYS(mEngine);
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    mListModel = new CxuiSettingRadioButtonListModel();
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    setModel(mListModel);
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    // connect the signals again
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    connect(this, SIGNAL(itemSelected(int)), this, SLOT(handleItemSelected(int)));
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}
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/*!
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* Init contents of the listbox and select current setting value.
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*/
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void CxuiSettingRadioButtonList::init(CxUiSettings::RadioButtonListParams *data)
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{
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    // first we reset the model and clear any previous data
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    mSettingValues.clear();
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    mListModel->resetModel();
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    disconnect(SIGNAL(valueSelected(int)));
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    if (data) {
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        QStringList settingStrings;
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        mSettingValues.clear();
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        CxUiSettings::SettingItem setting;
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        foreach (setting, data->mSettingPairList) {
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            CX_DEBUG(("CxuiSettingRadioButtonList - appending setting value: %s", setting.mValue.toString().toAscii().data()));
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            settingStrings.append(setting.mItem); // setting string
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            mSettingValues.append(setting.mValue); // engine value for setting
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        }
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        // Set the setting strings to the model.
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        setItems(settingStrings);
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        // Set the preview mode.
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        // Note: We implement preview ourselves, not with HbRadioButtonList preview mode.
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        setPreviewMode(HbRadioButtonList::NoPreview);
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        mPreview = data->mPreview;
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        setSettingId(data->mSettingId);
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        setListBoxType(data->mListboxType);
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        // Store the original setting value and focus matching item.
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        QString value = mEngine->settings().get<QString>(mSettingId, "");
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        CX_DEBUG(("CxuiSettingRadioButtonList - original value: [%s]", qPrintable(value)));
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        setOriginalSelectedItemByValue(QVariant(value));
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    }
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}
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/*!
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 * Sets the original selection of list by value. Can be used to override value read from
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 * CxeSettings or used to remember previously selected value in case of setting that is
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 * not read from CxeSettings (e.g. selftimer)
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 */
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void CxuiSettingRadioButtonList::setOriginalSelectedItemByValue(const QVariant &value)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    // Find the index of given value among setting values.
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    // Default to first item, if given value is not found.
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    int index = mSettingValues.indexOf(QVariant(value));
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    if (index < 0) {
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        CX_DEBUG(("[WARNING] Value [%s] not found, selecting first item", qPrintable(value.toString())));
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        index = 0;
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    }
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    // Store the original value.
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    mOriginalIndex = index;
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    // Select the index with current value item.
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    setSelected(index);
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    // Ensure that currently selected item is visible.
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    scrollTo(currentIndex());
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Set list texts.
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* @param values List of the texts.
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*/
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void CxuiSettingRadioButtonList::setItems(const QStringList &values)
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{
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    mListModel->setItems(values);
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}
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/*!
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* Set the type of this list.
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* @param type Type identifier, SingleLine or TwoLine.
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*/
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void CxuiSettingRadioButtonList::setListBoxType(int type)
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{
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    mListModel->setListBoxType(type);
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}
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/*!
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* Set id of the setting this list represents.
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* @param id Id of the setting.
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*/
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void CxuiSettingRadioButtonList::setSettingId(const QString &id)
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{
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    // Selected item is updated, when this list is shown.
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    mSettingId = id;
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}
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/*!
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* Handle selecting an item.
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* @param index Index of the selected item in list.
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*/
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void CxuiSettingRadioButtonList::handleItemSelected(int index)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (mPreview) {
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        commit(index);
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    } else {
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        // no action needed
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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    This slot can be used to set the selection accepted.
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*/
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void CxuiSettingRadioButtonList::handleSelectionAccepted()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    // Ok button pressed. Update originally selected item,
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    // which is the one that always get's set when closing.
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    mOriginalIndex = selected();
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    emit selectionCommitted();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Handle closing the listbox. If the current selection was accepted,
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* we commit the new value here. If current selection has been cancelled,
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* we commit the original value.
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*/
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void CxuiSettingRadioButtonList::handleClose()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (!mSettingId.isEmpty()) {
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        // If handleSelectionAccepted was called, this now contains the new index,
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        // otherwise the original one is selected.
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        commit(mOriginalIndex);
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    }
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    // clear settings id so setting value doesn't get updated by
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    // accident when updating ui appearance
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    mSettingId.clear();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
41
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  Commits value to settings.
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*/
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void CxuiSettingRadioButtonList::commit(int index)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    CX_DEBUG(("CxuiSettingRadioButtonList - id: %s", qPrintable(mSettingId)));
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    if (!mSettingId.isEmpty() && !mSettingValues.isEmpty()) {
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        QVariant value = mSettingValues.at(index);
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        if (value.type() == QVariant::Int) {
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            CX_DEBUG(("CxuiSettingRadioButtonList - index:%d value:%d", index, value.toInt()));
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            // Don't set the value again, if it is the current value.
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            // For e.g. video quality it would result in re-preparation etc.
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            try {
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                int current = mEngine->settings().get<int>(mSettingId);
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                if (current != value.toInt()) {
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                    mEngine->settings().set(mSettingId, value.toInt());
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                }
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            } catch (CxeException &e) {
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                // ignore error
19
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            }
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            // inform interested clients about value changed event
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            emit valueSelected(value.toInt());
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        } else if (value.type() == QVariant::String) {
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            CX_DEBUG(("CxuiSettingRadioButtonList - index:%d value:[%s]", index, qPrintable(value.toString())));
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46
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            try {
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                QString current = mEngine->settings().get<QString>(mSettingId);
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                CX_DEBUG(("CxuiSettingRadioButtonList - settings model value:[%s]", qPrintable(current)));
52
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                // If the changed setting is a scene mode, we need to reset it
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                // because a scene mode related setting might have changed
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                // even though the scene mode itself hadn't
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                if (current != value.toString() ||
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                    mSettingId == CxeSettingIds::IMAGE_SCENE ||
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                    mSettingId == CxeSettingIds::VIDEO_SCENE) {
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                    mEngine->settings().set(mSettingId, value.toString());
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                }
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            } catch (CxeException &e) {
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                // ignore error
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            }
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        }
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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// end of file