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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 #ifndef NMAPIMESSAGETASK_H_ |
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19 #define NMAPIMESSAGETASK_H_ |
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20 |
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21 #include <QObject> |
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22 |
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23 #include <nmapidef.h> |
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24 |
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25 /*! |
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26 base class for async tasks |
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27 */ |
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28 class NMAPI_EXPORT NmApiMessageTask : public QObject |
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29 { |
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30 Q_OBJECT |
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31 protected: |
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32 NmApiMessageTask(QObject *parent); |
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33 |
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34 public: |
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35 virtual ~NmApiMessageTask(); |
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36 |
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37 public slots: |
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38 /*! |
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39 Starts task and returns true if starting succeeded. |
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40 */ |
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41 virtual bool start() = 0; |
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42 |
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43 /*! |
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44 Cancels started but not yet completed task. may not be applicable |
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45 in all tasks. |
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46 */ |
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47 virtual void cancel() = 0; |
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48 |
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49 signals: |
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50 /*! |
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51 task failed, error code is specific to concrete task |
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52 */ |
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53 void failed (int error); |
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54 /*! |
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55 task canceled |
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56 */ |
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57 void canceled(); |
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58 }; |
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59 |
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60 #endif /*NMAPIMESSAGETASK_H_ */ |
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