1 /*

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

     3 * All rights reserved.

     4 *

     5 * This program is free software: you can redistribute it and/or modify

     6 * it under the terms of the GNU Lesser General Public License as published by

     7 * the Free Software Foundation, version 2.1 of the License.

     8 * 

     9 * This program is distributed in the hope that it will be useful,

    10 * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12 * GNU Lesser General Public License for more details.

    13 *

    14 * You should have received a copy of the GNU Lesser General Public License

    15 * along with this program.  If not, 

    16 * see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

    17 *

    18 * Description:

    19 *

    20 */

    21 

    22 #ifndef SETTINGSHANDLERBASE_H

    23 #define SETTINGSHANDLERBASE_H

    24 

    25 // INCLUDES

    26 #include <QVariant>

    27 #include "xqsettingsmanager.h"

    28 #include <exception>

    29 #include <e32base.h>

    30 

    31 // FORWARD DECLARATIONS

    32 class XQSettingsKey;

    33 

    34 class MSettingsHandlerObserver

    35 {

    36 public:

    37     virtual void valueChanged(const XQSettingsKey& key, XQSettingsManager::Type type) = 0;

    38     virtual void itemDeleted(const XQSettingsKey& key) = 0;

    39 };

    40 

    41 class SettingsHandlerBase

    42 {

    43 public:

    44     virtual ~SettingsHandlerBase() {};

    45     virtual void setObserver(MSettingsHandlerObserver* observer) = 0;

    46     QVariant handleReadItemValue(const XQSettingsKey& key, XQSettingsManager::Type type, TInt& error);

    47     bool handleWriteItemValue(const XQSettingsKey& key, const QVariant& value, TInt& error);

    48     virtual bool handleStartMonitoring(const XQSettingsKey& key, XQSettingsManager::Type type, MSettingsHandlerObserver& observer, TInt& error) = 0;

    49     virtual bool handleStopMonitoring(const XQSettingsKey& key, TInt& error) = 0;

    50 

    51 protected:

    52     virtual TInt getValue(unsigned long key, TInt& value) = 0;

    53     virtual TInt getValue(unsigned long key, TReal& value) = 0;

    54     virtual void getValueL(unsigned long key, RBuf8& value) = 0;

    55     virtual void getValueL(unsigned long key, RBuf16& value) = 0;

    56 

    57     virtual TInt setValue(unsigned long key, const TInt& value) = 0;

    58     virtual TInt setValue(unsigned long key, const TReal& value) = 0;

    59     virtual TInt setValue(unsigned long key, const TDesC8& value) = 0;

    60     virtual TInt setValue(unsigned long key, const TDesC16& value) = 0;

    61 };

    62 

    63 #endif //SETTINGSHANDLERBASE_H