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1 /* |
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2 * Copyright (c) 2005-2007 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: An implementation class for issuing Mediator Service commands. |
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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 #include "MediatorCommandInitiatorBody.h" |
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22 #include "MediatorServerClient.h" |
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23 #include "Debug.h" |
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24 |
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25 |
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26 // ============================ MEMBER FUNCTIONS =============================== |
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27 |
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28 CMediatorCommandInitiatorBody::CMediatorCommandInitiatorBody( |
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29 MMediatorCommandResponseObserver* aObserver ) |
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30 : CActive( EPriorityStandard ), |
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31 iObserver( aObserver ), |
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32 iCommandDataPtr( NULL, 0 ), |
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33 iCategoryBuffer( iCategory ), |
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34 iStatusBuffer( iResponseStatus ), |
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35 iCommandBuffer( iCommand ) |
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36 { |
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37 } |
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38 |
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39 void CMediatorCommandInitiatorBody::ConstructL() |
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40 { |
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41 CActiveScheduler::Add( this ); |
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42 User::LeaveIfError( iMediatorServer.Connect() ); |
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43 ResetDataBufferL( KMaxCommandData ); |
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44 } |
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45 |
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46 CMediatorCommandInitiatorBody* CMediatorCommandInitiatorBody::NewL( |
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47 MMediatorCommandResponseObserver* aObserver ) |
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48 { |
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49 CMediatorCommandInitiatorBody* self |
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50 = new( ELeave ) CMediatorCommandInitiatorBody( aObserver ); |
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51 |
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52 CleanupStack::PushL( self ); |
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53 self->ConstructL(); |
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54 CleanupStack::Pop( self ); |
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55 |
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56 return self; |
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57 } |
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58 |
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59 CMediatorCommandInitiatorBody::~CMediatorCommandInitiatorBody() |
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60 { |
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61 Cancel(); |
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62 iMediatorServer.Close(); |
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63 delete iCommandData; |
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64 } |
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65 |
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66 // ----------------------------------------------------------------------------- |
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67 // CMediatorCommandInitiatorBody::DoCancel |
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68 // |
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69 // (other items were commented in a header). |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 void CMediatorCommandInitiatorBody::DoCancel() |
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73 { |
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74 TRACE(Print(_L("[Mediator Server]\t CMediatorCommandInitiatorBody::DoCancel\n"))); |
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75 iMediatorServer.Cancel(); |
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76 } |
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77 |
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78 |
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79 |
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80 |
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81 |
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82 // ----------------------------------------------------------------------------- |
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83 // CMediatorCommandInitiatorBody::IssueCommandL |
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84 // |
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85 // (other items were commented in a header). |
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86 // ----------------------------------------------------------------------------- |
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87 // |
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88 TInt CMediatorCommandInitiatorBody::IssueCommand( TUid aDomain, |
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89 TUid aCategory, |
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90 TInt aCommandId, |
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91 TVersion aVersion, |
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92 const TDesC8& aData ) |
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93 { |
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94 TRACE(Print(_L("[Mediator Server]\t CMediatorCommandInitiatorBody::IssueCommandL\n"))); |
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95 |
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96 // Check that we are not already active |
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97 if ( IsActive() ) |
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98 { |
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99 ERROR_LOG(_L("[Mediator] CMediatorCommandIntiatorBody::IssueCommand: IsActive returned KErrInUse\n")); |
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100 return KErrInUse; |
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101 } |
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102 |
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103 // Initiate response waiting before command, otherwise there will be a concurrency problem |
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104 // with clients that issue response in command handler |
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105 WaitForCommandResponse(); |
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106 |
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107 // Send the command to Mediator |
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108 TInt status = iMediatorServer.IssueCommand( aDomain, |
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109 aCategory, |
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110 aCommandId, |
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111 aVersion, |
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112 aData ); |
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113 |
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114 // Cancel command waiting request |
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115 if ( status != KErrNone ) |
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116 { |
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117 ERROR_TRACE(Print(_L("[Mediator] CMediatorCommandIntiatorBody::IssueCommand: status=%d\n"), status ) ); |
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118 // Cancel wait for response in server |
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119 iMediatorServer.CancelCommand ( aDomain, aCategory, aCommandId ); |
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120 Cancel(); |
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121 } |
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122 |
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123 return status; |
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124 } |
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125 |
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126 // ----------------------------------------------------------------------------- |
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127 // CMediatorCommandInitiatorBody::CancelCommand |
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128 // |
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129 // (other items were commented in a header). |
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130 // ----------------------------------------------------------------------------- |
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131 // |
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132 void CMediatorCommandInitiatorBody::CancelCommand( TUid aDomain, |
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133 TUid aCategory, |
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134 TInt aCommandId ) |
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135 { |
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136 TRACE(Print(_L("[Mediator Server]\t CMediatorCommandInitiatorBody::CancelCommand\n"))); |
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137 |
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138 // Send the cancellation |
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139 iMediatorServer.CancelCommand( aDomain, aCategory, aCommandId ); |
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140 Cancel(); // cancel also the pending request, so that subsequent commands will be served |
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141 |
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142 } |
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143 // ----------------------------------------------------------------------------- |
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144 // CMediatorCommandInitiatorBody::RunL |
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145 // |
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146 // (other items were commented in a header). |
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147 // ----------------------------------------------------------------------------- |
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148 // |
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149 void CMediatorCommandInitiatorBody::RunL() |
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150 { |
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151 TRACE(Print(_L("[Mediator Server]\t CMediatorCommandInitiatorBody::RunL status %d\n"), iStatus.Int() )); |
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152 |
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153 // in case of error, no callbacks |
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154 if ( iStatus.Int() >= 0 && iObserver ) |
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155 { |
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156 // Check the parameter data size. If bigger than expected, fetch it synchronously |
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157 TInt dataSize = iStatus.Int(); |
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158 if ( dataSize > iCommandDataPtr.MaxLength() ) |
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159 { |
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160 // Reset data buffer for bigger size |
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161 ResetDataBufferL( dataSize ); |
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162 |
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163 // Fetch data from Mediator |
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164 iMediatorServer.FetchParameterData( iCommandDataPtr ); |
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165 } |
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166 iObserver->CommandResponseL( iCategory.iDomain, |
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167 iCategory.iCategory, |
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168 iCommand.iCommandId, |
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169 iResponseStatus, |
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170 *iCommandData ); |
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171 } |
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172 } |
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173 |
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174 // ----------------------------------------------------------------------------- |
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175 // CMediatorCommandInitiatorBody::WaitForCommandResponse |
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176 // |
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177 // (other items were commented in a header). |
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178 // ----------------------------------------------------------------------------- |
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179 // |
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180 void CMediatorCommandInitiatorBody::WaitForCommandResponse() |
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181 { |
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182 // To be sure no duplicate requests are raised |
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183 if ( IsActive() ) |
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184 { |
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185 return; |
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186 } |
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187 iMediatorServer.WaitForCommandResponse( iStatus, |
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188 iCategoryBuffer, |
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189 iCommandBuffer, |
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190 iCommandDataPtr, |
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191 iStatusBuffer ); |
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192 SetActive(); |
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193 } |
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194 |
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195 // ----------------------------------------------------------------------------- |
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196 // CMediatorCommandResponder::ResetDataBufferL |
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197 // Starts to receive commands asynchronously |
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198 // (other items were commented in a header). |
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199 // ----------------------------------------------------------------------------- |
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200 // |
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201 void CMediatorCommandInitiatorBody::ResetDataBufferL( TInt aSize ) |
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202 { |
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203 if ( iCommandData ) |
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204 { |
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205 delete iCommandData; |
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206 iCommandData = NULL; |
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207 } |
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208 iCommandData = HBufC8::NewL( aSize ); |
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209 iCommandDataPtr.Set( iCommandData->Des() ); |
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210 |
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211 } |
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212 |
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213 |
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214 // End of File |