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1 /* |
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2 * Copyright (c) 2002 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 * Declares the CActiveApDbNotifier class. |
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16 * |
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17 */ |
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18 |
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19 |
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20 #ifndef ACTIVE_AP_DB_NOTIFIER_H |
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21 #define ACTIVE_AP_DB_NOTIFIER_H |
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22 |
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23 // INCLUDES |
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24 |
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25 #include <e32base.h> |
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26 #include <ApEngineVer.h> |
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27 |
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28 |
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29 // FORWARD DECLARATIONS |
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30 |
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31 class CActiveApDb; |
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32 |
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33 // CLASS DECLARATION |
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34 |
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35 /** |
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36 * Active object encapsulating an access point database notifier. |
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37 * Used by CActiveApDb. |
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38 */ |
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39 class CActiveApDbNotifier : public CActive |
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40 { |
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41 public: // construct / destruct |
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42 |
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43 /** |
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44 * Constructor. |
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45 * @param aDb Active access point database to watch for. |
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46 */ |
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47 CActiveApDbNotifier( CActiveApDb& aDb ); |
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48 |
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49 /** |
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50 * Destructor. |
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51 */ |
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52 virtual ~CActiveApDbNotifier(); |
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53 |
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54 protected: // from CActive |
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55 /** |
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56 * Invoked when the outstanding request completes. |
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57 */ |
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58 void RunL() ; |
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59 |
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60 /** |
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61 * Implementation of the Cancel protocol; |
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62 * cancel any outstanding request. |
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63 */ |
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64 void DoCancel(); |
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65 |
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66 public: // new methods |
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67 |
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68 /** |
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69 * Start the notifier. The notification request is automatically |
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70 * renewed until it is cancelled, or the database is closed by |
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71 * all clients (i.e. released by DBMS). |
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72 */ |
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73 void Start(); |
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74 |
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75 /** |
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76 * Cancel and close the notifier now. |
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77 */ |
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78 void Stop(); |
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79 |
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80 private: |
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81 /** |
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82 * Request database change notification from the Access Point Engine. |
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83 */ |
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84 void NotifyChange(); |
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85 |
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86 private: // data |
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87 CActiveApDb* iActiveDb; ///< Pointer to the database. |
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88 ///< Does not owns it. |
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89 }; |
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90 |
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91 #endif |
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92 |
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93 // End of File |