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1 /* |
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2 * Copyright (c) 2007 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: Publish & Subscribe key observer |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef __LOCKAPPPUBSUBOBSERVER_H__ |
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20 #define __LOCKAPPPUBSUBOBSERVER_H__ |
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21 |
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22 // INCLUDES |
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23 #include <w32std.h> |
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24 #include <e32svr.h> |
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25 #include <e32property.h> |
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26 #include "lockappobserverinterface.h" |
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27 |
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28 /** |
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29 * CLockAppPubSubObserver class implements a Publish & Subscribe key observer. |
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30 * It can be used to monitor and also to set a PubSub key. |
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31 * |
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32 * @lib lockapp |
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33 * @since 5.0 |
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34 * @author Tamas Koteles |
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35 */ |
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36 class CLockAppPubSubObserver : public CActive |
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37 { |
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38 public: |
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39 |
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40 /** |
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41 * Two-phased constructor. |
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42 * |
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43 * @param aObserver pointer to observer |
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44 * @param aPubSubUid publish & subscribe Uid |
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45 * @param aKeyId publish & subscribe key id |
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46 * @return the instance just created. |
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47 */ |
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48 static CLockAppPubSubObserver* NewL( MLockAppObserverInterface* aObserver, TUid aPubSubUid, |
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49 TUint32 aKeyId ); |
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50 |
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51 /** |
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52 * Destructor. |
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53 */ |
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54 ~CLockAppPubSubObserver( ); |
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55 |
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56 /** |
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57 * Start obsering PubSub key |
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58 */ |
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59 TInt Start( ); |
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60 |
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61 /** |
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62 * Stop observing PubSub key |
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63 */ |
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64 void Stop( ); |
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65 |
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66 /** |
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67 * Get key value from P&S. |
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68 */ |
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69 TInt GetKeyValue( TInt& aValue ); |
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70 |
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71 /** |
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72 * Set key value to P&S. |
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73 */ |
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74 TInt SetKeyValue( TInt aValue ); |
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75 |
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76 protected: |
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77 |
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78 /** |
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79 * C++ default constructor. |
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80 * |
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81 * @param aObserver observer |
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82 * @param aPubSubUid publish & subscribe Uid |
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83 * @param aKeyId key id |
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84 */ |
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85 CLockAppPubSubObserver( MLockAppObserverInterface* aObserver, TUid aPubSubUid, |
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86 TUint32 aKeyId ); |
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87 |
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88 /** |
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89 * Symbian OS constructor. |
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90 */ |
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91 void ConstructL( ); |
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92 |
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93 private: |
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94 |
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95 void RunL( ); |
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96 |
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97 void DoCancel( ); |
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98 |
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99 protected: |
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100 |
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101 /** |
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102 * Observer's callback interface. Not owned. |
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103 */ |
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104 MLockAppObserverInterface* iObserver; |
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105 |
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106 /** |
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107 * Access to Publish & Subscribe. |
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108 */ |
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109 RProperty iProperty; |
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110 |
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111 /** |
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112 * Publish & Subscribe Uid. |
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113 */ |
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114 TUid iPubSubUid; |
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115 |
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116 /** |
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117 * Publish & Subscribe key Id. |
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118 */ |
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119 TUint32 iKeyId; |
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120 |
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121 /** |
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122 * Publish & Subscribe key's value. |
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123 */ |
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124 TInt iValue; |
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125 |
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126 }; |
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127 |
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128 #endif // __LOCKAPPPUBSUBOBSERVER_H__ |
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129 // END OF FILE |