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1 /* |
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2 * Copyright (c) 2008 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: cache message change 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 __CIMCACHEEVENTHANDLER_H__ |
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20 #define __CIMCACHEEVENTHANDLER_H__ |
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21 |
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22 #include <e32std.h> |
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23 #include <e32base.h> |
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24 #include <s32mem.h> |
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25 |
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26 #include <imcachedefs.h> |
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27 |
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28 class MIMCacheClient; |
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29 class MIMCacheEventHandler; |
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30 |
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31 /** |
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32 * a class to listen to server cache message change |
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33 */ |
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34 NONSHARABLE_CLASS( CIMCacheEventHandler ): public CActive |
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35 { |
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36 public: |
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37 /** |
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38 * Two-phased constructor. |
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39 * @param aRegistrar ,client refence |
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40 * @param aHandler a handler to send data to ui client |
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41 */ |
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42 static CIMCacheEventHandler* NewL( MIMCacheClient& aRegistrar , |
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43 MIMCacheEventHandler& aHandler ); |
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44 /** |
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45 * ~CIMCacheEventHandler. |
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46 */ |
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47 virtual ~CIMCacheEventHandler(); |
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48 |
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49 public: // From CActive |
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50 |
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51 /** |
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52 * RunL |
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53 */ |
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54 void RunL(); |
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55 |
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56 /** |
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57 * DoCancel |
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58 */ |
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59 void DoCancel(); |
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60 |
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61 /** |
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62 * RunError |
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63 */ |
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64 TInt RunError( TInt /* aError */); |
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65 |
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66 |
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67 public : // new functions |
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68 /** |
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69 * UnRegisterObserver from server |
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70 */ |
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71 void UnRegisterObserver(); |
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72 private: |
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73 |
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74 /** |
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75 * default CIMCacheEventHandler |
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76 * @param aRegistrar ,client refence |
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77 * @param aHandler a handler to send data to ui client |
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78 */ |
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79 CIMCacheEventHandler( MIMCacheClient& aRegistrar, |
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80 MIMCacheEventHandler& aHandler ); |
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81 /** |
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82 * default ConstructL |
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83 */ |
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84 void ConstructL(); |
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85 |
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86 /** |
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87 * Gets called when data update is available. |
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88 * get data buffer from server |
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89 */ |
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90 void GetBufferChatDataL() ; |
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91 |
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92 /** |
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93 * Gets called when data update is available. |
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94 * extract the data and send to client |
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95 * @param aChatDataBuffer structure of SIMCacheMessageData type |
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96 * @param aMore indicate more packets pending at server side |
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97 */ |
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98 void InternalizeChatDataL( TPtr8 aChatDataBuffer , |
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99 TBool& aMore ); |
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100 |
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101 /** |
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102 * Gets called when data update is available. |
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103 * get data buffer from server |
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104 * @param aEventType, type of data |
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105 */ |
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106 void GetBufferedChatItemL( TIMCacheEventType aEventType ); |
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107 |
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108 /** |
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109 * read the stream and write into buffer |
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110 * @param aEventType, type of data |
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111 * @param aChatItemBuffer structure of SIMCacheContactData type |
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112 */ |
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113 |
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114 void InternalizeChatItemL( TIMCacheEventType aEventType, |
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115 TPtr8 aChatItemBuffer ); |
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116 |
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117 private: // data |
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118 |
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119 |
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120 // doesn't own: registrar |
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121 MIMCacheClient& iRegistrar; |
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122 // owned , need to observer to server or not |
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123 TBool iContinueObserving ; |
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124 // client side observer event |
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125 MIMCacheEventHandler& iUpdateHandler; |
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126 |
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127 |
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128 }; |
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129 |
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130 #endif // __CIMCACHEEVENTHANDLER_H__ |
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131 |
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132 |
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133 // END OF FILE |
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134 |