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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: A class to watch changes of key values in Central Repository. |
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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 |
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20 #include <e32base.h> |
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21 #include <e32def.h> |
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22 #include <centralrepository.h> |
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23 |
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24 |
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25 #include "centralrepositorywatch.h" |
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26 #include "trace.h" |
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27 |
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28 |
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29 // ======== LOCAL FUNCTIONS ======== |
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30 |
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31 |
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32 // ======== MEMBER FUNCTIONS ======== |
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33 |
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34 // --------------------------------------------------------- |
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35 // Symbian two-phased constructor |
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36 // --------------------------------------------------------- |
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37 // |
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38 CCentralRepositoryWatch* CCentralRepositoryWatch::NewL( |
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39 MCentralRepositoryObserver& aObserver, |
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40 TUid aRepositoryUid, |
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41 TUint32 aKeyId ) |
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42 { |
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43 FUNC_LOG; |
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44 CCentralRepositoryWatch* self = new ( ELeave ) CCentralRepositoryWatch( |
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45 aObserver, |
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46 aRepositoryUid, |
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47 aKeyId ); |
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48 CleanupStack::PushL( self ); |
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49 self->ConstructL(); |
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50 CleanupStack::Pop( self ); |
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51 return self; |
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52 } |
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53 |
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54 |
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55 // --------------------------------------------------------------------------- |
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56 // Symbian two-phased constructor |
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57 // --------------------------------------------------------------------------- |
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58 // |
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59 CCentralRepositoryWatch* CCentralRepositoryWatch::NewLC( |
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60 MCentralRepositoryObserver& aObserver, |
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61 TUid aRepositoryUid, |
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62 TUint32 aKeyId ) |
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63 { |
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64 FUNC_LOG; |
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65 CCentralRepositoryWatch* self = new( ELeave ) CCentralRepositoryWatch( |
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66 aObserver, |
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67 aRepositoryUid, |
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68 aKeyId ); |
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69 CleanupStack::PushL( self ); |
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70 self->ConstructL(); |
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71 return self; |
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72 } |
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73 |
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74 |
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75 // --------------------------------------------------------- |
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76 // Destructor |
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77 // --------------------------------------------------------- |
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78 // |
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79 CCentralRepositoryWatch::~CCentralRepositoryWatch() |
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80 { |
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81 FUNC_LOG; |
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82 Cancel(); |
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83 delete iRepository; |
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84 } |
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85 |
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86 // --------------------------------------------------------- |
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87 // SubscribeNotification |
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88 // --------------------------------------------------------- |
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89 // |
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90 void CCentralRepositoryWatch::Watch() |
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91 { |
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92 FUNC_LOG; |
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93 // Subscribe |
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94 if ( !IsActive() ) |
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95 { |
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96 iRepository->NotifyRequest( iKey, iStatus ); |
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97 SetActive(); |
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98 } |
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99 return; |
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100 } |
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101 |
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102 |
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103 // --------------------------------------------------------- |
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104 // Get current value. |
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105 // --------------------------------------------------------- |
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106 // |
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107 TInt CCentralRepositoryWatch::GetCurrentValue( TInt& aValue) |
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108 { |
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109 FUNC_LOG; |
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110 TInt value(0); |
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111 TInt aError = iRepository->Get(iKey, value); //try to get the value |
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112 if(KErrNone == aError) |
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113 { |
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114 aValue = value; |
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115 } |
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116 else |
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117 { |
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118 iObserver.CentRepGetKeyValueFailed( iRepositoryUid, iKey, aError ); |
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119 } |
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120 INFO_1( "Return aValue 0x%x", aValue ); |
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121 return aError; |
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122 } |
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123 |
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124 |
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125 // --------------------------------------------------------- |
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126 // From class CActive. |
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127 // DoCancel |
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128 // --------------------------------------------------------- |
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129 // |
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130 void CCentralRepositoryWatch::DoCancel() |
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131 { |
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132 FUNC_LOG; |
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133 iRepository->NotifyCancel( iKey ); |
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134 } |
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135 |
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136 |
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137 // --------------------------------------------------------- |
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138 // C++ constructor |
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139 // --------------------------------------------------------- |
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140 // |
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141 CCentralRepositoryWatch::CCentralRepositoryWatch( |
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142 MCentralRepositoryObserver& aObserver, |
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143 TUid aRepositoryUid, |
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144 TUint32 aKeyId ) |
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145 : CActive ( EPriorityStandard), |
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146 iObserver ( aObserver ) |
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147 { |
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148 FUNC_LOG; |
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149 iRepositoryUid = aRepositoryUid; |
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150 iKey = aKeyId; |
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151 } |
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152 |
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153 |
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154 // --------------------------------------------------------- |
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155 // ConstructL |
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156 // --------------------------------------------------------- |
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157 // |
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158 void CCentralRepositoryWatch::ConstructL( ) |
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159 { |
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160 FUNC_LOG; |
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161 // Connect CenRep |
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162 iRepository = CRepository::NewL( iRepositoryUid ); |
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163 // Check that key is valid |
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164 TInt aCurrentValue; |
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165 TInt errorCode = GetCurrentValue( aCurrentValue ); |
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166 if ( KErrNone != errorCode ) |
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167 { |
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168 User::Leave( errorCode ); |
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169 } |
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170 CActiveScheduler::Add( this ); |
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171 return; |
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172 } |
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173 |
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174 // --------------------------------------------------------- |
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175 // From class CActive. |
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176 // RunL |
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177 // --------------------------------------------------------- |
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178 // |
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179 void CCentralRepositoryWatch::RunL() |
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180 { |
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181 FUNC_LOG; |
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182 |
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183 // Get the value |
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184 TInt aCurrentValue = 0; |
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185 |
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186 // Re-subscribe before notifying The Master |
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187 iRepository->NotifyRequest( iKey, iStatus ); |
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188 SetActive(); |
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189 |
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190 TInt errorCode = GetCurrentValue( aCurrentValue ); |
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191 if ( KErrNone == errorCode ) |
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192 { |
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193 // Notify requester |
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194 iObserver.CentRepKeyChanged( |
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195 iRepositoryUid, |
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196 iKey ); |
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197 } |
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198 else |
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199 { |
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200 INFO_1( "RRepsitory::Get()failed aError %d", errorCode ); |
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201 iObserver.CentRepGetKeyValueFailed( iRepositoryUid, iKey, errorCode ); |
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202 } |
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203 } |
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204 |
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205 |
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206 // --------------------------------------------------------- |
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207 // From class CActive. |
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208 // RunL |
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209 // --------------------------------------------------------- |
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210 // |
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211 TInt CCentralRepositoryWatch::RunError( TInt aError ) |
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212 { |
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213 FUNC_LOG; |
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214 // Avoid Panic in CActiveScheduler |
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215 INFO_1( "aError %d", aError ); |
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216 INFO("Issuing a new request for key value changes"); |
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217 Watch(); |
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218 aError = KErrNone; |
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219 return aError; |
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220 } |
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221 |
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222 |
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223 // ======== GLOBAL FUNCTIONS ======== |
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224 |