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1 /* |
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2 * Copyright (c) 2002-2004 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: Handles ecom plugins |
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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 FILES |
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21 #include "xnecomhandler.h" |
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22 #include "xnpanic.h" |
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23 #include "xnarray.h" |
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24 #include "xnpointerarraywithownership.h" |
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25 #include <utf.h> |
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26 #include <ecom/ecom.h> |
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27 #include <ecom/implementationinformation.h> |
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28 #include <f32file.h> |
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29 |
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30 // EXTERNAL DATA STRUCTURES |
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31 //extern ?external_data; |
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32 |
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33 // EXTERNAL FUNCTION PROTOTYPES |
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34 //extern ?external_function( ?arg_type,?arg_type ); |
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35 |
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36 // CONSTANTS |
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37 //const ?type ?constant_var = ?constant; |
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38 |
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39 // MACROS |
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40 //#define ?macro ?macro_def |
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41 |
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42 // LOCAL CONSTANTS AND MACROS |
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43 //const ?type ?constant_var = ?constant; |
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44 //#define ?macro_name ?macro_def |
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45 // MODULE DATA STRUCTURES |
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46 //enum ?declaration |
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47 //typedef ?declaration |
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48 |
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49 /** |
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50 * A struct used for holding an implementation pointer and notifying ecom of implementation destruction |
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51 * @since Series 90 2.0 |
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52 */ |
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53 struct CXnEcomHandler::CEcomItem : public CBase |
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54 { |
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55 CEcomItem(TUid aInterfaceUid, CBase* aPluginImpl, TUid aDestructorId) : iInterfaceUid(aInterfaceUid), iPluginImpl(aPluginImpl), iDestructorId(aDestructorId) |
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56 { |
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57 } |
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58 // plugin interface id |
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59 TUid iInterfaceUid; |
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60 // plugin implementation pointer |
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61 CBase* iPluginImpl; |
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62 // ecom destructor id |
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63 TUid iDestructorId; |
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64 // plugin type |
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65 HBufC8* iType; |
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66 // destructor |
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67 ~CEcomItem() |
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68 { |
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69 delete iPluginImpl; |
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70 delete iType; |
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71 REComSession::DestroyedImplementation(iDestructorId); |
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72 } |
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73 }; |
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74 |
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75 // LOCAL FUNCTION PROTOTYPES |
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76 //?type ?function_name( ?arg_type, ?arg_type ); |
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77 |
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78 // FORWARD DECLARATIONS |
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79 //class ?FORWARD_CLASSNAME; |
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80 |
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81 // ============================= LOCAL FUNCTIONS =============================== |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // ?function_name ?description. |
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85 // ?description |
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86 // Returns: ?value_1: ?description |
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87 // ?value_n: ?description_line1 |
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88 // ?description_line2 |
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89 // ----------------------------------------------------------------------------- |
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90 // |
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91 //?type ?function_name( |
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92 // ?arg_type arg, // ?description |
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93 // ?arg_type arg) // ?description |
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94 // { |
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95 |
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96 // ?code // ?comment |
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97 |
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98 // ?comment |
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99 // ?code |
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100 // } |
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101 |
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102 |
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103 // ============================ MEMBER FUNCTIONS =============================== |
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104 |
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105 // ----------------------------------------------------------------------------- |
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106 // CXnEcomHandler::CXnEcomHandler |
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107 // C++ default constructor can NOT contain any code, that |
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108 // might leave. |
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109 // ----------------------------------------------------------------------------- |
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110 // |
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111 CXnEcomHandler::CXnEcomHandler() |
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112 { |
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113 } |
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114 |
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115 // ----------------------------------------------------------------------------- |
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116 // CXnEcomHandler::ConstructL |
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117 // Symbian 2nd phase constructor can leave. |
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118 // ----------------------------------------------------------------------------- |
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119 // |
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120 void CXnEcomHandler::ConstructL() |
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121 { |
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122 } |
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123 |
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124 |
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125 // ----------------------------------------------------------------------------- |
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126 // CXnEcomHandler::NewL |
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127 // Two-phased constructor. |
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128 // ----------------------------------------------------------------------------- |
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129 // |
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130 EXPORT_C CXnEcomHandler* CXnEcomHandler::NewL() |
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131 { |
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132 CXnEcomHandler* self = new( ELeave ) CXnEcomHandler; |
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133 |
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134 CleanupStack::PushL( self ); |
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135 self->ConstructL(); |
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136 CleanupStack::Pop(); |
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137 |
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138 return self; |
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139 } |
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140 |
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141 |
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142 // Destructor |
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143 CXnEcomHandler::~CXnEcomHandler() |
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144 { |
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145 iPlugins.ResetAndDestroy(); |
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146 } |
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147 |
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148 // ----------------------------------------------------------------------------- |
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149 // CXnEcomHandler::PluginsL |
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150 // Get pointers to plugins |
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151 // ----------------------------------------------------------------------------- |
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152 EXPORT_C void CXnEcomHandler::PluginsL(TUid aInterfaceUid, const TDesC8& aType, CXnArray& aFunctions) |
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153 { |
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154 TBool cached = EFalse; |
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155 for (TInt i = iPlugins.Count() - 1 ; i >= 0; --i) |
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156 { |
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157 CEcomItem* tmp = iPlugins[i]; |
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158 if (tmp->iInterfaceUid == aInterfaceUid |
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159 && *(tmp->iType) == aType) |
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160 { |
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161 cached = ETrue; |
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162 if(aFunctions.Container().Append(tmp->iPluginImpl) != KErrNone) |
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163 { |
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164 User::Leave(KXnErrAppendingPluginFailed); |
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165 } |
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166 } |
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167 } |
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168 if (cached) |
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169 { |
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170 return; |
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171 } |
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172 HBufC8* defaultData = aType.AllocL(); |
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173 CleanupStack::PushL(defaultData); |
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174 TEComResolverParams resolverParams; |
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175 resolverParams.SetDataType(*defaultData); |
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176 RImplInfoPtrArray implInfoArray; |
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177 CXnPointerArrayWithOwnership* safeArray = CXnPointerArrayWithOwnership::NewL(); |
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178 CleanupStack::PushL(safeArray); |
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179 REComSession::ListImplementationsL(aInterfaceUid, resolverParams, implInfoArray); |
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180 // REComSession::ListImplementationsL(aInterfaceUid, implInfoArray); |
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181 TInt count = implInfoArray.Count(); |
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182 for (TInt i = implInfoArray.Count() - 1; i >= 0; --i) |
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183 { |
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184 CImplementationInformation* impl = implInfoArray[i]; |
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185 (safeArray->Container()).Insert(impl, 0); |
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186 } |
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187 if ((safeArray->Container()).Count() != count) |
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188 { |
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189 (safeArray->Container()).Reset(); |
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190 implInfoArray.ResetAndDestroy(); |
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191 User::Leave(KErrNoMemory); |
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192 } |
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193 implInfoArray.Reset(); |
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194 for (TInt i = safeArray->Container().Count() - 1; i >= 0; --i) |
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195 { |
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196 CImplementationInformation* impl = static_cast<CImplementationInformation*>(safeArray->Container()[i]); |
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197 TUid dtorIdKey; |
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198 CBase* plugin = (CBase*) REComSession::CreateImplementationL(impl->ImplementationUid(), dtorIdKey); |
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199 CleanupStack::PushL(plugin); |
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200 CEcomItem* tmp = new (ELeave) CEcomItem(aInterfaceUid, plugin, dtorIdKey); |
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201 CleanupStack::PushL(tmp); |
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202 tmp->iType = aType.AllocL(); |
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203 //tmp->iType = impl->DataType().AllocL(); |
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204 if(iPlugins.Append(tmp) != KErrNone) |
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205 { |
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206 User::Leave(KXnErrAppendingPluginFailedAgain); |
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207 } |
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208 CleanupStack::Pop(tmp); |
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209 CleanupStack::Pop(plugin); |
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210 } |
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211 for (TInt i = iPlugins.Count() - 1 ; i >= 0; --i) |
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212 { |
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213 CEcomItem* tmp = iPlugins[i]; |
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214 if (tmp->iInterfaceUid == aInterfaceUid |
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215 && *(tmp->iType) == aType) |
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216 { |
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217 cached = ETrue; |
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218 if(aFunctions.Container().Append(tmp->iPluginImpl) != KErrNone) |
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219 { |
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220 User::Leave(KXnErrAppendingPluginImplFailed); |
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221 } |
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222 } |
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223 } |
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224 CleanupStack::PopAndDestroy(safeArray); |
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225 CleanupStack::PopAndDestroy(defaultData); |
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226 } |
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227 |
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228 // ----------------------------------------------------------------------------- |
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229 // ?classname::?member_function |
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230 // ?implementation_description |
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231 // (other items were commented in a header). |
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232 // ----------------------------------------------------------------------------- |
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233 // |
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234 //?type ?classname::?member_function( |
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235 // ?arg_type arg, |
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236 // ?arg_type arg ) |
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237 // { |
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238 |
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239 // ?code |
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240 |
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241 // } |
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242 |
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243 |
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244 |
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245 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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246 |
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247 // ----------------------------------------------------------------------------- |
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248 // ?function_name implements... |
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249 // ?implementation_description. |
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250 // Returns: ?value_1: ?description |
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251 // ?value_n: ?description |
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252 // ?description |
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253 // ----------------------------------------------------------------------------- |
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254 // |
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255 //?type ?function_name( |
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256 // ?arg_type arg, // ?description |
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257 // ?arg_type arg ) // ?description |
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258 // { |
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259 |
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260 // ?code |
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261 |
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262 // } |
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263 |
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264 |
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265 // End of File |