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1 /* |
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2 * Copyright (c) 2005 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: Event handling logic for the Mediator Server |
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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 // INCLUDE FILES |
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20 #include <e32base.h> |
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21 |
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22 #include "MediatorServerEventHandler.h" |
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23 #include "MediatorServerObjects.h" |
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24 #include "MediatorServiceDefs.h" |
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25 #include "Debug.h" |
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26 |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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29 |
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30 // ----------------------------------------------------------------------------- |
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31 // CMediatorServerEventHandler::CMediatorServerEventHandler |
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32 // ----------------------------------------------------------------------------- |
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33 // |
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34 CMediatorServerEventHandler::CMediatorServerEventHandler( |
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35 CMediatorServerObjectHandler& aObjectHandler ) |
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36 : CActive( EPriorityStandard ), iObjectHandler( aObjectHandler ) |
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37 { |
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38 } |
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39 |
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40 // ----------------------------------------------------------------------------- |
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41 // CMediatorServerEventHandler::ConstructL |
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42 // ----------------------------------------------------------------------------- |
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43 // |
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44 void CMediatorServerEventHandler::ConstructL() |
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45 { |
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46 CActiveScheduler::Add( this ); |
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47 } |
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48 |
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49 // ----------------------------------------------------------------------------- |
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50 // CMediatorServerEventHandler::NewL |
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51 // ----------------------------------------------------------------------------- |
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52 // |
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53 CMediatorServerEventHandler* CMediatorServerEventHandler::NewL( |
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54 CMediatorServerObjectHandler& aObjectHandler ) |
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55 { |
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56 LOG(_L("[Mediator Server]\t CMediatorServerEventHandler::NewL")); |
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57 CMediatorServerEventHandler* self |
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58 = new( ELeave ) CMediatorServerEventHandler( aObjectHandler ); |
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59 |
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60 CleanupStack::PushL( self ); |
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61 self->ConstructL(); |
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62 CleanupStack::Pop( self ); |
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63 |
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64 return self; |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // CMediatorServerEventHandler::~CMediatorServerEventHandler |
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69 // ----------------------------------------------------------------------------- |
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70 // |
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71 CMediatorServerEventHandler::~CMediatorServerEventHandler() |
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72 { |
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73 Cancel(); |
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74 // Clear event list |
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75 iEventServiceList.ResetAndDestroy(); |
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76 } |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // CMediatorServerEventHandler::DoCancel |
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80 // |
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81 // (other items were commented in a header). |
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82 // ----------------------------------------------------------------------------- |
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83 // |
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84 void CMediatorServerEventHandler::DoCancel() |
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85 { |
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86 TRACE(Print(_L("[Mediator Server]\t CMediatorServerEventHandler::DoCancel\n"))); |
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87 } |
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88 |
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89 // ----------------------------------------------------------------------------- |
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90 // CMediatorServerEventHandler::RunL |
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91 // |
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92 // (other items were commented in a header). |
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93 // ----------------------------------------------------------------------------- |
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94 // |
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95 void CMediatorServerEventHandler::RunL() |
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96 { |
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97 TRACE(Print(_L("[Mediator Server]\t CMediatorServerEventHandler::RunL status %d\n"), iStatus.Int() )); |
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98 |
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99 // Should be no errors unless cancel |
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100 if ( iStatus == KErrNone ) |
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101 { |
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102 if ( iEventServiceList.Count() > 0 ) |
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103 { |
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104 CEvent* serviceEvent = iEventServiceList[0]; // Take the first |
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105 iEventServiceList.Remove(0); // remove event from array |
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106 if ( serviceEvent ) |
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107 { |
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108 // Get event information |
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109 TUid domain = serviceEvent->Domain(); |
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110 TUid category = serviceEvent->Category(); |
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111 TInt eventId = serviceEvent->Id(); |
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112 const TDesC8& data = serviceEvent->ParameterData(); |
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113 |
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114 RPointerArray<MMediatorServerEventObserver>& observers |
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115 = serviceEvent->GetObservers(); |
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116 |
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117 // Loop through the observer array and send notifications |
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118 for ( TInt index = 0; index < observers.Count(); index++ ) |
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119 { |
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120 MMediatorServerEventObserver* observer = observers[index]; |
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121 if ( observer ) |
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122 { |
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123 TRAP_IGNORE( observer->MediatorEventL( domain, |
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124 category, |
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125 eventId, |
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126 data ) ); |
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127 } |
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128 } |
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129 delete serviceEvent; |
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130 } |
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131 // Continue if there's still more to serve |
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132 if ( iEventServiceList.Count() > 0 ) |
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133 { |
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134 SetActive(); |
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135 iStatus = KRequestPending; |
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136 TRequestStatus* stat = &iStatus; |
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137 User::RequestComplete( stat, KErrNone ); |
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138 } |
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139 } |
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140 } |
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141 LOG(_L("[Mediator Server]\t CMediatorServerEventHandler::RunL end")); |
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142 } |
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143 |
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144 // ----------------------------------------------------------------------------- |
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145 // CMediatorServerEventHandler::RegisterEventListL |
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146 // |
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147 // (other items were commented in a header). |
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148 // ----------------------------------------------------------------------------- |
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149 // |
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150 void CMediatorServerEventHandler::RegisterEventListL( |
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151 TMediatorCategory aCategory, |
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152 const REventList& aEvents, |
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153 TSecureId aSecureId ) |
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154 { |
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155 LOG(_L("[Mediator Server]\t CMediatorServerEventHandler::RegisterEventListL")); |
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156 // Check that domain exists --> if not add new |
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157 CDomain* domain = iObjectHandler.FindDomain( aCategory.iDomain ); |
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158 if ( !domain ) |
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159 { |
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160 domain = iObjectHandler.AddDomainL( aCategory.iDomain ); |
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161 } |
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162 |
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163 // Check that category exists --> if not add new |
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164 TInt ignore = 0; // not used here |
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165 CCategory* category = domain->FindCategory( aCategory.iCategory, ignore ); |
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166 if ( !category ) |
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167 { |
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168 category = domain->AddCategoryL( aCategory.iCategory ); |
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169 } |
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170 |
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171 // Loop through the events and add them to list |
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172 // Take the possible error to variable |
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173 TInt error = KErrNone; |
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174 TBool stop = EFalse; |
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175 TInt index = 0; |
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176 for ( index = 0; index < aEvents.Count() && !stop; index++ ) |
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177 { |
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178 CEvent* newEvent = CEvent::NewL( aEvents[index] ); |
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179 CleanupStack::PushL( newEvent ); |
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180 newEvent->SetSecureId( aSecureId ); |
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181 newEvent->SetCommitState( CItem::EAdded ); |
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182 TInt addError = category->AddEvent( newEvent ); |
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183 if ( addError ) |
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184 { |
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185 ERROR_TRACE(Print(_L("[Mediator] CMediatorServerEventHandler::RegisterEventListL: addError=%d\n"), addError ) ); |
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186 ERROR_TRACE(Print(_L("[Mediator] Failed to add event %d to category %d of domain %d\n"), newEvent->Id(), |
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187 aCategory.iCategory.iUid, |
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188 aCategory.iDomain.iUid ) ); |
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189 // in case of error, delete event and take error |
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190 CleanupStack::PopAndDestroy( newEvent ); |
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191 error = addError; |
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192 stop = ETrue; |
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193 } |
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194 else |
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195 { |
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196 // Event has been added properly --> just pop |
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197 CleanupStack::Pop( newEvent ); |
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198 } |
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199 } |
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200 |
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201 TRACE(Print(_L("[Mediator Server]\t Events registered:\n"))); |
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202 TRACE(Print(_L("[Mediator Server]\t Success/count: %d/%d \tstatus: %d"), index, aEvents.Count(), error )); |
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203 // Check error if we need to do partial recovery |
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204 if ( error != KErrNone ) |
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205 { |
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206 // Remove events that already have been added |
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207 category->RollbackEvents(); |
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208 } |
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209 else |
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210 { |
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211 // Complete event list update |
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212 category->CommitEvents(); |
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213 |
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214 // Use the object handler to notify events |
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215 iObjectHandler.EventsAdded( aCategory.iDomain, |
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216 aCategory.iCategory, |
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217 aEvents ); |
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218 } |
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219 // In the end leave if error --> client gets error code |
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220 User::LeaveIfError( error ); |
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221 } |
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222 |
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223 // ----------------------------------------------------------------------------- |
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224 // CMediatorServerEventHandler::UnregisterEventListL |
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225 // |
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226 // (other items were commented in a header). |
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227 // ----------------------------------------------------------------------------- |
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228 // |
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229 void CMediatorServerEventHandler::UnregisterEventListL( TMediatorCategory aCategory, |
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230 const REventList& aEvents, |
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231 TSecureId aSecureId ) |
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232 { |
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233 CCategory* category = iObjectHandler.CategoryL( aCategory ); |
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234 TInt error = KErrNone; |
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235 if ( category ) |
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236 { |
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237 |
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238 TBool stop = EFalse; |
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239 TInt index = 0; |
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240 // Loop through the list of events and unregister those. |
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241 for ( index = 0; index < aEvents.Count() && !stop; index++ ) |
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242 { |
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243 TInt eventIndex = 0; |
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244 TEvent removeEvent = aEvents[index]; |
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245 CEvent* eventPtr = category->FindEvent( removeEvent.iEventId, eventIndex ); |
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246 if ( !eventPtr ) |
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247 { |
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248 ERROR_LOG(_L("[Mediator] CMediatorServerEventHandler::UnregisterEventListL: Event not found\n") ); |
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249 ERROR_TRACE(Print(_L("[Mediator] Failed to remove event %d in category %d of domain %d\n"), removeEvent.iEventId, |
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250 aCategory.iCategory.iUid, |
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251 aCategory.iDomain.iUid ) ); |
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252 error = KErrMediatorEventNotFound; |
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253 stop = ETrue; |
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254 } |
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255 else |
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256 { |
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257 // Found the event --> is it own registration |
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258 if ( eventPtr->SecureId() != aSecureId ) |
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259 { |
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260 ERROR_LOG(_L("[Mediator] CMediatorServerEventHandler::UnregisterEventListL: Secure ID mismatch\n") ); |
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261 ERROR_TRACE(Print(_L("[Mediator] eventPtr->SecureId()=0x%x, aSecureId=0x%x\n"), eventPtr->SecureId().iId, |
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262 aSecureId.iId ) ); |
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263 error = KErrMediatorSecureIdMismatch; |
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264 stop = ETrue; |
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265 } |
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266 else // Should be ok to unregister |
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267 { |
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268 eventPtr->SetCommitState( CItem::ERemoved ); |
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269 } |
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270 } |
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271 } |
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272 |
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273 TRACE(Print(_L("[Mediator Server]\t Events unregistered:\n"))); |
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274 TRACE(Print(_L("[Mediator Server]\t Success/count: %d/%d \tstatus: %d"), index, aEvents.Count(), error )); |
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275 |
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276 // Check error status --> if there's error, need to roll back |
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277 if ( error != KErrNone ) |
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278 { |
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279 // Cancel event removal |
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280 category->RollbackEvents(); |
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281 } |
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282 else |
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283 { |
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284 // Complete event removal |
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285 category->CommitEvents(); |
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286 // Use the object handler to notify event removal |
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287 iObjectHandler.EventsRemoved( aCategory.iDomain, |
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288 aCategory.iCategory, |
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289 aEvents ); |
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290 } |
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291 } |
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292 // Leave in case of error situation |
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293 User::LeaveIfError( error ); |
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294 } |
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295 |
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296 // ----------------------------------------------------------------------------- |
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297 // CMediatorServerEventHandler::SubscribeEventListL |
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298 // |
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299 // (other items were commented in a header). |
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300 // ----------------------------------------------------------------------------- |
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301 // |
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302 void CMediatorServerEventHandler::SubscribeEventListL( |
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303 TMediatorCategory aCategory, |
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304 const REventList& aEvents, |
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305 TCapabilitySet aCaps, |
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306 MMediatorServerEventObserver* aObserver ) |
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307 { |
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308 LOG(_L("[Mediator Server]\t CMediatorServerEventHandler::SubscribeEventListL")); |
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309 TInt error = KErrNone; |
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310 TBool stop = EFalse; |
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311 TInt index = 0; |
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312 // Find domain & category |
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313 CCategory* category = iObjectHandler.CategoryL( aCategory ); |
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314 if ( category ) |
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315 { |
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316 // Loop through the list of subscribed events |
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317 for ( index = 0; index < aEvents.Count() && !stop; index++ ) |
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318 { |
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319 TEvent newEvent = aEvents[index]; |
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320 TInt ignore = 0; // Not used |
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321 CEvent* eventPtr = category->FindEvent( newEvent.iEventId, ignore ); |
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322 if ( !eventPtr ) |
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323 { |
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324 error = KErrMediatorEventNotFound; |
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325 stop = ETrue; // Partial failure --> stop processing |
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326 } |
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327 else |
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328 { |
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329 // Check capabilities |
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330 // Capabilities are checked so that boolean ETrue is returned |
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331 // when all parameter caps can be found from aCaps |
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332 if ( !aCaps.HasCapabilities( eventPtr->Policy() ) ) |
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333 { |
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334 #ifdef _DEBUG |
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335 for ( TInt index = 0; index < ECapability_Limit; index++ ) |
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336 { |
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337 TCapabilitySet eventCaps = eventPtr->Policy(); |
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338 TBool event = eventCaps.HasCapability( (TCapability) index ); |
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339 TBool requestor = aCaps.HasCapability( (TCapability) index ); |
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340 if ( event && !requestor ) |
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341 { |
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342 ERROR_TRACE(Print(_L("[Mediator] CMediatorServerEventHandler::SubscribeEventListL: capability %d missing \n"), index )); |
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343 ERROR_TRACE(Print(_L("[Mediator] Failed to subscribe event %d in category %d of domain %d\n"), newEvent.iEventId, |
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344 aCategory.iCategory.iUid, |
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345 aCategory.iDomain.iUid ) ); |
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346 } |
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347 } |
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348 #endif // _DEBUG |
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349 error = KErrPermissionDenied; |
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350 stop = ETrue; |
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351 } |
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352 // Check (major) version match |
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353 if ( newEvent.iVersion.iMajor != eventPtr->Version().iMajor ) |
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354 { |
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355 ERROR_LOG(_L("[Mediator] CMediatorServerEventHandler::SubscribeEventListL: Version mismatch\n")); |
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356 ERROR_TRACE(Print(_L("[Mediator] Registered=%d, subscribed=%d \n"), eventPtr->Version().iMajor, |
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357 newEvent.iVersion.iMajor ) ); |
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358 ERROR_TRACE(Print(_L("[Mediator] Failed to subscribe event %d in category %d of domain %d\n"), newEvent.iEventId, |
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359 aCategory.iCategory.iUid, |
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360 aCategory.iDomain.iUid ) ); |
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361 // There's a major version mismatch |
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362 error = KErrMediatorVersionMismatch; |
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363 stop = ETrue; |
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364 } |
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365 if ( !error ) // Everything ok? |
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366 { |
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367 // Everything is ok, register subscriber |
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368 TInt status = eventPtr->AddObserver( aObserver ); |
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369 // If there's double subscription, ignore error |
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370 // otherwise return the error |
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371 if ( status && status != KErrMediatorAlreadySubscribed ) |
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372 { |
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373 ERROR_TRACE(Print(_L("[Mediator] CMediatorServerEventHandler::SubscribeEventListL: error=%d\n"), status) ); |
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374 ERROR_TRACE(Print(_L("[Mediator] Failed to subscribe event %d in category %d of domain %d\n"), newEvent.iEventId, |
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375 aCategory.iCategory.iUid, |
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376 aCategory.iDomain.iUid ) ); |
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377 error = status; |
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378 stop = ETrue; |
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379 } |
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380 TRACE(Print(_L("[Mediator Server]\t subscription status: %d\n"), status)); |
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381 } |
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382 } |
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383 } |
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384 |
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385 TRACE(Print(_L("[Mediator Server]\t Events subscribed:\n"))); |
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386 TRACE(Print(_L("[Mediator Server]\t Processed/Total: %d/%d \tstatus: %d"), index, aEvents.Count(), error )); |
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387 // Check error status --> if there's error, need to roll back |
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388 if ( error != KErrNone ) |
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389 { |
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390 // Loop the subscribed events and unsubscribe those |
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391 // Index - 1 is because index points to failed item --> stop before processing it again |
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392 for ( TInt newIndex = 0; newIndex < index - 1; newIndex++ ) |
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393 { |
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394 TEvent event = aEvents[newIndex]; |
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395 TInt ignore = 0; // Not used |
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396 CEvent* eventPtr = category->FindEvent( event.iEventId, ignore ); |
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397 if ( eventPtr ) |
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398 { |
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399 // Nothing can be done in case of error --> ignore return value |
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400 TInt ignore = eventPtr->RemoveObserver( aObserver ); |
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401 } |
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402 } |
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403 } |
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404 } |
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405 // In the end leave if we have error |
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406 User::LeaveIfError( error ); |
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407 |
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408 } |
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409 |
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410 // ----------------------------------------------------------------------------- |
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411 // CMediatorServerEventHandler::UnsubscribeEventListL |
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412 // |
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413 // (other items were commented in a header). |
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414 // ----------------------------------------------------------------------------- |
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415 // |
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416 void CMediatorServerEventHandler::UnsubscribeEventListL( |
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417 TMediatorCategory aCategory, |
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418 const REventList& aEvents, |
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419 MMediatorServerEventObserver* aObserver ) |
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420 { |
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421 LOG(_L("[Mediator Server]\t CMediatorServerEventHandler::UnsubscribeEventListL")); |
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422 // Find correct category |
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423 CCategory* category = iObjectHandler.CategoryL( aCategory ); |
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424 TInt error = KErrNone; |
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425 TInt index = 0; |
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426 |
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427 if ( category ) |
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428 { |
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429 TBool stop = EFalse; |
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430 // Loop through the list of events to be unsubscribed |
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431 for ( index = 0; index < aEvents.Count() && !stop; index++ ) |
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432 { |
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433 TEvent event = aEvents[index]; |
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434 TInt ignore = 0; // Not used |
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435 CEvent* eventPtr = category->FindEvent( event.iEventId, ignore ); |
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436 if ( !eventPtr ) |
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437 { |
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438 ERROR_LOG(_L("[Mediator] CMediatorServerEventHandler::UnsubscribeEventListL: event not found\n")); |
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439 ERROR_TRACE(Print(_L("[Mediator] Failed to unsubscribe event %d in category %d of domain %d\n"), event.iEventId, |
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440 aCategory.iCategory.iUid, |
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441 aCategory.iDomain.iUid ) ); |
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442 |
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443 error = KErrMediatorEventNotFound; |
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444 stop = ETrue; // Partial failure --> stop processing |
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445 } |
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446 else |
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447 { |
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448 // Everything is ok, unsubscribe |
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449 TInt status = eventPtr->RemoveObserver( aObserver ); |
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450 // If there's no subscription existing, ignore error |
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451 // otherwise return the error |
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452 if ( status != KErrMediatorNoSubscription ) |
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453 { |
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454 ERROR_TRACE(Print(_L("[Mediator] CMediatorServerEventHandler::UnsubscribeEventListL: status=%d\n"), status ) ); |
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455 ERROR_TRACE(Print(_L("[Mediator] Failed to unsubscribe event %d in category %d of domain %d\n"), event.iEventId, |
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456 aCategory.iCategory.iUid, |
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457 aCategory.iDomain.iUid ) ); |
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458 error = status; |
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459 stop = ETrue; |
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460 } |
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461 TRACE(Print(_L("[Mediator Server]\t unsubscribe status: %d\n"), status)); |
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462 } |
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463 } |
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464 |
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465 TRACE(Print(_L("[Mediator Server]\t Events unsubscribed:\n"))); |
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466 TRACE(Print(_L("[Mediator Server]\t Success/count: %d/%d \tstatus: %d"), index, aEvents.Count(), error )); |
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467 |
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468 // Check error status --> if there's error, need to roll back |
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469 if ( error != KErrNone ) |
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470 { |
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471 // Loop the unsubscribed events and subscribe those |
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472 for ( TInt newIndex = 0; newIndex < index; newIndex++ ) |
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473 { |
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474 TEvent event = aEvents[newIndex]; |
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475 TInt ignore = 0; // Not used |
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476 CEvent* eventPtr = category->FindEvent( event.iEventId, ignore ); |
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477 if ( eventPtr ) |
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478 { |
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479 // Nothing can be done in case of error --> ignore return value |
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480 TInt ignore = eventPtr->AddObserver( aObserver ); |
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481 } |
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482 } |
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483 } |
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484 } |
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485 // In the end leave if we have error |
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486 User::LeaveIfError( error ); |
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487 } |
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488 |
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489 // ----------------------------------------------------------------------------- |
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490 // CMediatorServerEventHandler::RaiseEventL |
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491 // |
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492 // (other items were commented in a header). |
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493 // ----------------------------------------------------------------------------- |
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494 // |
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495 void CMediatorServerEventHandler::RaiseEventL( TMediatorCategory aCategory, |
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496 MediatorService::TEvent aEvent, |
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497 const TDesC8& aData ) |
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498 { |
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499 LOG(_L("[Mediator Server]\t CMediatorServerEventHandler::RaiseEventL")); |
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500 // Find correct category |
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501 CCategory* category = iObjectHandler.CategoryL( aCategory ); |
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502 if ( category ) |
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503 { |
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504 TInt ignore = 0; // Not used |
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505 CEvent* eventPtr = category->FindEvent( aEvent.iEventId, ignore ); |
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506 |
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507 // Check that event was found |
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508 if ( !eventPtr ) |
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509 { |
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510 ERROR_LOG(_L("[Mediator] CMediatorServerEventHandler::RaiseEventL: event not found\n")); |
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511 ERROR_TRACE(Print(_L("[Mediator] Failed to raise event %d in category %d of domain %d\n"), aEvent.iEventId, |
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512 aCategory.iCategory.iUid, |
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513 aCategory.iDomain.iUid ) ); |
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514 User::Leave( KErrMediatorEventNotFound ); |
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515 } |
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516 |
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517 // Check the version information match (major |
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518 if ( eventPtr->Version().iMajor != aEvent.iVersion.iMajor ) |
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519 { |
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520 ERROR_LOG(_L("[Mediator] CMediatorServerEventHandler::RaiseEventL: Version mismatch\n")); |
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521 ERROR_TRACE(Print(_L("[Mediator] Registered=%d, subscribed=%d \n"), eventPtr->Version().iMajor, |
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522 aEvent.iVersion.iMajor ) ); |
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523 ERROR_TRACE(Print(_L("[Mediator] Failed to raise event %d in category %d of domain %d\n"), aEvent.iEventId, |
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524 aCategory.iCategory.iUid, |
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525 aCategory.iDomain.iUid ) ); |
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526 User::Leave( KErrMediatorVersionMismatch ); |
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527 } |
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528 |
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529 |
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530 RPointerArray<MMediatorServerEventObserver>& observers |
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531 = eventPtr->GetObservers(); |
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532 |
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533 // Loop through the observer array and send notifications |
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534 for ( TInt index = 0; index < observers.Count(); index++ ) |
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535 { |
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536 MMediatorServerEventObserver* observer = observers[index]; |
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537 if ( observer ) |
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538 { |
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539 |
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540 TRAP_IGNORE( observer->MediatorEventL( aCategory.iDomain, |
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541 aCategory.iCategory, |
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542 aEvent.iEventId, |
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543 aData ) ); |
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544 } |
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545 } |
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546 } |
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547 } |
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548 |
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549 // End of File |