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1 /* |
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2 * Copyright (c) 2006 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: |
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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 "alf/alfgencomponent.h" |
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21 #include "alf/alfconstants.h" |
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22 #include "alf/alfenv.h" |
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23 #include "alfclient.h" |
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24 #include "alflogger.h" |
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25 |
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26 #include <uiacceltk/HuiUtil.h> |
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27 |
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28 class CAlfMessageObserver; |
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29 |
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30 NONSHARABLE_CLASS(RAlfSubsessionSimple): public RSubSessionBase |
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31 { |
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32 public: |
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33 TInt Open(CAlfEnv& aEnv, TInt aImplementationId, TInt aImplementationUid, const TDesC8& aConstuctionParams); |
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34 TInt SendSynch(TUint aOp, const TDesC8& aInputBuf, TDes8& aOutBuf); |
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35 TInt SendNoReply(TUint aOp, const TDesC8& aInputBuf); |
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36 void SendAsync(const TDesC8& aInputBuf, TDes8& aOutBuf, CAlfMessageObserver* aObserver); |
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37 void Cancel(TInt aCmdId); |
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38 void Close(); |
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39 TInt Identifier() |
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40 { |
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41 return SubSessionHandle(); |
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42 } |
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43 |
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44 private: |
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45 RAlfClient* iClient; |
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46 }; |
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47 |
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48 |
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49 NONSHARABLE_CLASS(CAlfMessageObserver):public CActive |
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50 { |
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51 public: |
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52 static CAlfMessageObserver* NewRequestLC(RAlfSubsessionSimple& aClient, MAlfAsyncOpObserver* aObserver, TInt aCmdId, CAlfGenComponent& aComms) |
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53 { |
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54 CAlfMessageObserver* me = new (ELeave) CAlfMessageObserver(aClient, aObserver, aCmdId, aComms); |
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55 me->SetActive(); |
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56 CleanupStack::PushL(me); |
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57 return me; |
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58 } |
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59 |
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60 TRequestStatus& Status() |
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61 { |
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62 return iStatus; |
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63 } |
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64 |
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65 ~CAlfMessageObserver() |
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66 { |
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67 Cancel(); |
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68 if (iObserver) |
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69 { |
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70 iObserver->AlfAsyncOpCompleted(TInt(this), KErrCancel); |
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71 } |
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72 } |
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73 |
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74 const TDesC8& Des() const |
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75 { |
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76 return iAsDescriptor; |
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77 } |
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78 |
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79 private: |
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80 CAlfMessageObserver(RAlfSubsessionSimple& aClient, MAlfAsyncOpObserver* aObserver, TInt aCmdId, CAlfGenComponent& aComms) |
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81 :CActive(CActive::EPriorityHigh),iClient(aClient), iObserver(aObserver), iComms( aComms ), |
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82 iParametersAsInts(0,0), |
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83 iAsDescriptor( iParametersAsInts ) |
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84 { |
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85 ASSERT(aClient.Identifier()); |
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86 CActiveScheduler::Add(this); |
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87 iParametersAsInts.iInt1 = aCmdId; |
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88 iParametersAsInts.iInt2 = reinterpret_cast<TInt>(this); |
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89 } |
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90 |
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91 // --------------------------------------------------------------------------- |
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92 // from CActive, called when asych request completed by server |
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93 // --------------------------------------------------------------------------- |
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94 // |
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95 void RunL() |
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96 { |
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97 iObserver->AlfAsyncOpCompleted(TInt(this), iStatus.Int()); |
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98 iObserver = 0; |
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99 |
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100 iComms.CommandCompleted( this ); // function call deletes 'this' |
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101 } |
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102 |
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103 // --------------------------------------------------------------------------- |
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104 // from CActive, called if Cancel called while active |
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105 // --------------------------------------------------------------------------- |
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106 // |
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107 void DoCancel() |
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108 { |
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109 iClient.Cancel(TInt(this)); |
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110 } |
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111 |
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112 // --------------------------------------------------------------------------- |
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113 // from CActive, will be called if RunL leaves (in this case note allowed ) |
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114 // --------------------------------------------------------------------------- |
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115 // |
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116 TInt RunError(TInt /*aError*/) |
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117 { |
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118 // client leaved in AlfAsyncOpCompleted, just panic it |
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119 USER_INVARIANT(); |
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120 return KErrNone; |
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121 } |
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122 |
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123 RAlfSubsessionSimple& iClient; |
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124 MAlfAsyncOpObserver* iObserver; |
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125 CAlfGenComponent& iComms; |
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126 |
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127 TInt2 iParametersAsInts; |
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128 TPckgC<TInt2> iAsDescriptor; |
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129 }; |
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130 |
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131 |
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132 // --------------------------------------------------------------------------- |
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133 // creates new subsession |
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134 // --------------------------------------------------------------------------- |
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135 // |
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136 TInt RAlfSubsessionSimple::Open(CAlfEnv& aEnv, TInt aImplementationId, TInt aImplementationUid, const TDesC8& aConstuctionParams) |
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137 { |
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138 iClient = &aEnv.Client(); |
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139 (void)iClient->FlushBatchBuffer(); |
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140 TAlfImplementationInformation info(aImplementationId,aImplementationUid, aEnv.ApiVersion()); |
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141 TPckgC<TAlfImplementationInformation> infoBuf(info); |
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142 return CreateSubSession(*iClient, EAlfCreateSubSession, TIpcArgs(&infoBuf, &aConstuctionParams)); |
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143 } |
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144 |
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145 // --------------------------------------------------------------------------- |
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146 // Synchronous server request |
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147 // --------------------------------------------------------------------------- |
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148 // |
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149 TInt RAlfSubsessionSimple::SendSynch(TUint aOp, const TDesC8& aInputBuf, TDes8& aOutBuf) |
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150 { |
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151 (void)iClient->FlushBatchBuffer(); |
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152 return SendReceive(EAlfDoSubSessionCmd, TIpcArgs(aOp,&aInputBuf,&aOutBuf)); |
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153 } |
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154 |
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155 TInt RAlfSubsessionSimple::SendNoReply(TUint aOp, const TDesC8& aInputBuf ) |
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156 { |
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157 return(iClient->SendNoReply(aOp, aInputBuf, SubSessionHandle())); |
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158 } |
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159 |
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160 // --------------------------------------------------------------------------- |
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161 // Sets asynchronous request |
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162 // --------------------------------------------------------------------------- |
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163 // |
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164 void RAlfSubsessionSimple::SendAsync(const TDesC8& aInputBuf, TDes8& aOutBuf, CAlfMessageObserver* aObserver) |
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165 { |
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166 (void)iClient->FlushBatchBuffer(); |
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167 SendReceive(EAlfDoAsyncSubSessionCmd, TIpcArgs(&aObserver->Des(),&aInputBuf,&aOutBuf), aObserver->Status()); |
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168 } |
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169 |
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170 // --------------------------------------------------------------------------- |
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171 // cancels asynch operation if active |
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172 // --------------------------------------------------------------------------- |
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173 // |
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174 void RAlfSubsessionSimple::Cancel(TInt aCmdId) |
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175 { |
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176 if (SubSessionHandle()) |
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177 { |
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178 SendReceive(EAlfSubSCancelAsynchRequest, TIpcArgs(aCmdId)); |
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179 } |
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180 } |
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181 |
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182 // --------------------------------------------------------------------------- |
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183 // terminates server side resources |
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184 // --------------------------------------------------------------------------- |
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185 // |
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186 void RAlfSubsessionSimple::Close() |
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187 { |
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188 if ( SubSessionHandle() ) |
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189 { |
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190 (void)iClient->FlushBatchBuffer(); |
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191 } |
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192 CloseSubSession(EAlfCloseSubSession); |
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193 } |
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194 |
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195 // private data |
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196 NONSHARABLE_CLASS(CAlfGenComponent::TPrivateData) |
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197 { |
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198 public: |
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199 |
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200 RAlfSubsessionSimple iClient; |
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201 RPointerArray<CAlfMessageObserver> iObservers; |
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202 }; |
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203 |
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204 // --------------------------------------------------------------------------- |
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205 // Public constructor |
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206 // --------------------------------------------------------------------------- |
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207 // |
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208 EXPORT_C CAlfGenComponent* CAlfGenComponent::NewL( |
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209 CAlfEnv& aEnv, |
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210 TInt aImplementationId, |
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211 TInt aImplementationUid, |
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212 const TDesC8& aConstructionParams) |
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213 { |
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214 CAlfGenComponent* me = new (ELeave) CAlfGenComponent(aEnv); |
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215 CleanupStack::PushL(me); |
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216 me->ConstructL( aImplementationId, aImplementationUid,aConstructionParams); |
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217 CleanupStack::Pop(me); |
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218 return me; |
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219 } |
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220 |
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221 // --------------------------------------------------------------------------- |
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222 // Destructor |
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223 // --------------------------------------------------------------------------- |
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224 // |
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225 EXPORT_C CAlfGenComponent::~CAlfGenComponent() |
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226 { |
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227 if (iData) |
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228 { |
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229 iData->iObservers.ResetAndDestroy(); // will cancel outstanding requests |
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230 iData->iObservers.Close(); |
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231 iData->iClient.Close(); |
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232 } |
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233 |
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234 delete iData; |
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235 } |
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236 |
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237 // --------------------------------------------------------------------------- |
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238 // performs synchronous request |
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239 // --------------------------------------------------------------------------- |
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240 // |
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241 EXPORT_C TInt CAlfGenComponent::DoSynchronousCmd( TUint aOp, |
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242 const TDesC8& aInputBuf, TDes8& aOutBuf) |
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243 { |
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244 ASSERT(iData); |
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245 return iData->iClient.SendSynch(aOp, aInputBuf, aOutBuf); |
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246 } |
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247 |
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248 // --------------------------------------------------------------------------- |
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249 // performs synchronous request without waiting the reply from the server |
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250 // --------------------------------------------------------------------------- |
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251 // |
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252 EXPORT_C TInt CAlfGenComponent::DoCmdNoReply( TUint aOp, const TDesC8& aInputBuf ) |
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253 { |
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254 ASSERT(iData); |
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255 TInt err = iData->iClient.SendNoReply(aOp, aInputBuf); |
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256 if ( err != KErrNone ) |
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257 { |
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258 __ALFLOGSTRING1( "CAlfGenComponent::DoCmdNoReply buffer error %d - using DoSynchronousCmd", err ) |
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259 |
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260 TBuf8<1> dum; |
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261 err = DoSynchronousCmd( aOp, aInputBuf, dum ); |
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262 } |
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263 return err; |
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264 } |
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265 |
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266 // --------------------------------------------------------------------------- |
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267 // Raises async request to server |
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268 // --------------------------------------------------------------------------- |
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269 // |
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270 EXPORT_C TInt CAlfGenComponent::DoAsynchronousCmdL(TUint aOp, const TDesC8& aInputBuf, |
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271 TDes8& aOutBuf, MAlfAsyncOpObserver* aObserver) |
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272 { |
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273 ASSERT(iData); |
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274 // ASSERT(aObserver); // todo: does client need to provide observer if it is not interested about response |
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275 |
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276 CAlfMessageObserver* obsEntry = CAlfMessageObserver::NewRequestLC(iData->iClient, aObserver, aOp, *this); |
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277 iData->iObservers.AppendL(obsEntry); |
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278 CleanupStack::Pop(); |
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279 |
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280 iData->iClient.SendAsync(aInputBuf, aOutBuf, obsEntry); |
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281 |
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282 return TInt(obsEntry); |
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283 } |
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284 |
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285 // --------------------------------------------------------------------------- |
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286 // Request to cancel possible async request |
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287 // --------------------------------------------------------------------------- |
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288 // |
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289 EXPORT_C void CAlfGenComponent::CancelAsynchCmd(TInt aCmdId) |
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290 { |
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291 if (iData) |
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292 { |
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293 const TInt index = iData->iObservers.Find(reinterpret_cast<CAlfMessageObserver*>(aCmdId)); |
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294 if (index != KErrNotFound) |
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295 { |
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296 CAlfMessageObserver* item = iData->iObservers[index]; |
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297 iData->iObservers.Remove(index); |
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298 delete item; |
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299 } |
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300 } |
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301 } |
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302 |
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303 EXPORT_C TInt CAlfGenComponent::Identifier() |
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304 { |
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305 if (iData) |
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306 return iData->iClient.Identifier(); |
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307 |
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308 return 0; |
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309 } |
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310 |
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311 // --------------------------------------------------------------------------- |
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312 // Default construtor, private |
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313 // --------------------------------------------------------------------------- |
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314 // |
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315 CAlfGenComponent::CAlfGenComponent(CAlfEnv& aEnv) |
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316 :iEnv(aEnv) |
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317 { |
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318 __ASSERT_ALWAYS(aEnv.Client().Handle(), USER_INVARIANT()); |
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319 |
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320 } |
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321 |
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322 // --------------------------------------------------------------------------- |
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323 // 2nd phase ctr, opens subsession to envs client |
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324 // --------------------------------------------------------------------------- |
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325 // |
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326 void CAlfGenComponent::ConstructL( |
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327 TInt aImplementationId, |
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328 TInt aImplementationUid, |
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329 const TDesC8& aConstructionParams) |
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330 { |
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331 iData = new (ELeave) TPrivateData(); |
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332 User::LeaveIfError(iData->iClient.Open(iEnv, aImplementationId,aImplementationUid,aConstructionParams)); |
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333 iData->iObservers.Reset(); |
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334 } |
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335 |
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336 // --------------------------------------------------------------------------- |
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337 // Called when message completes |
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338 // --------------------------------------------------------------------------- |
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339 // |
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340 void CAlfGenComponent::CommandCompleted( CAlfMessageObserver* aMessageObserver ) |
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341 { |
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342 ASSERT(iData); |
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343 |
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344 const TInt index = iData->iObservers.Find(aMessageObserver); |
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345 ASSERT(index != KErrNotFound); |
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346 |
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347 delete iData->iObservers[index]; |
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348 iData->iObservers.Remove(index); |
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349 } |
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350 |
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351 // end of file |