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1 // Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Definition of the class that manages the keyclick plugin |
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15 // |
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16 // |
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17 |
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18 #include "KEYCLICK.H" |
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19 |
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20 #include "server.h" |
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21 #include "W32CLICK.H" |
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22 #include "panics.h" |
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23 #include "inifile.h" |
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24 #include "advancedpointereventhelper.h" |
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25 |
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26 CClickMaker* CClick::iHandler=NULL; |
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27 TBool CClick::iIsChangeable=ETrue; |
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28 TBool CClick::iKeyClickOveride=EFalse; |
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29 TBool CClick::iKeyClickEnabled=ETrue; |
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30 TBool CClick::iPenClickEnabled=ETrue; |
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31 RLibrary CClick::iPlugIn; |
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32 TBool CClick::iIsLoaded=EFalse; |
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33 |
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34 const TUid KClickPlugInDllUid={0x10004F63}; |
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35 static _LIT_SECURITY_POLICY_C1(KSecurityPolicy_WriteDeviceData,ECapabilityWriteDeviceData); |
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36 |
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37 |
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38 /*static part*/ |
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39 |
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40 void CClick::InitStaticsL() |
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41 { |
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42 _LIT(KClickPlugin,"KEYCLICKPLUGIN"); |
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43 TPtrC plugInName; |
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44 if (WsIniFile->FindVar(KClickPlugin,plugInName)) |
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45 LoadNewLibraryL(plugInName); |
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46 _LIT(KClickFixed,"KEYCLICKPLUGINFIXED"); |
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47 iIsChangeable=!WsIniFile->FindVar(KClickFixed); |
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48 } |
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49 |
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50 void CClick::DeleteStatics() |
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51 { |
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52 if (iIsLoaded) |
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53 { |
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54 delete iHandler; |
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55 iHandler=NULL; |
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56 iPlugIn.Close(); |
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57 } |
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58 } |
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59 |
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60 void CClick::KeyEvent(TEventCode aType,const TKeyEvent& aEvent) |
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61 { |
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62 WS_ASSERT_DEBUG(iHandler, EWsPanicClickPluginNotLoaded); |
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63 if (iKeyClickEnabled && !iKeyClickOveride) |
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64 { |
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65 TRAP_IGNORE(iHandler->KeyEvent(aType,aEvent)); // TRAP leaves in case the plugin is badly behaved |
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66 } |
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67 } |
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68 |
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69 void CClick::PointerEvent(const TPoint& aScreenPos,const TAdvancedPointerEvent& aEvent) |
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70 { |
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71 WS_ASSERT_DEBUG(iHandler, EWsPanicClickPluginNotLoaded); |
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72 if (iPenClickEnabled) |
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73 { |
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74 TAdvancedPointerEvent event; |
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75 TAdvancedPointerEventHelper::Copy(aEvent,event); |
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76 event.iParentPosition=aScreenPos; |
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77 TRAP_IGNORE(iHandler->PointerEvent(event)); // TRAP leaves in case the plugin is badly behaved |
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78 } |
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79 } |
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80 |
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81 void CClick::OtherEvent(TInt aType,TAny* aParam) |
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82 { |
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83 WS_ASSERT_DEBUG(iHandler, EWsPanicClickPluginNotLoaded); |
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84 if (aType!=EEventPointer || iPenClickEnabled) |
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85 TRAP_IGNORE(iHandler->OtherEvent(aType,aParam)); // TRAP leaves in case the plugin is badly behaved |
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86 } |
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87 |
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88 void CClick::LoadNewLibraryL(const TDesC &aDllName) |
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89 { |
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90 WS_ASSERT_DEBUG(iIsChangeable, EWsPanicChangeClickPlugin); |
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91 const TUidType uidType(KDllUid,KClickPlugInDllUid); |
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92 RLibrary plugIn; |
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93 User::LeaveIfError(plugIn.Load(aDllName,uidType)); |
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94 CleanupClosePushL(plugIn); |
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95 CreateCClickHandler function; |
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96 CClickMaker* handler; |
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97 function=(CreateCClickHandler)User::LeaveIfNull((TAny*)plugIn.Lookup(1)); //Can only cast function pointer with C-style casts |
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98 handler=(*function)(); |
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99 if (handler) |
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100 { |
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101 Unload(); |
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102 CleanupStack::Pop(&plugIn); |
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103 iPlugIn=plugIn; |
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104 iHandler=handler; |
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105 iIsLoaded=ETrue; |
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106 } |
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107 else |
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108 CleanupStack::PopAndDestroy(&plugIn); |
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109 } |
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110 |
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111 /*object part*/ |
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112 |
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113 void CClick::ConstructL(const TUid& aUid) |
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114 { |
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115 NewObjL(); |
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116 iThirdUid=aUid; |
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117 } |
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118 |
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119 void CClick::CommandL(TInt aOpcode,const TAny* aCmdData) |
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120 { |
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121 TWsClickCmdUnion pData; |
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122 pData.any=aCmdData; |
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123 switch(aOpcode) |
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124 { |
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125 case EWsClickOpFree: |
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126 delete this; |
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127 break; |
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128 case EWsClickOpIsLoaded: |
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129 { |
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130 TUint reply=0; |
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131 if (IsHandler()) |
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132 reply|=EClickLoaded; |
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133 if (iIsChangeable) |
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134 reply|=EClickLoadable; |
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135 SetReply(reply); |
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136 } |
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137 break; |
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138 case EWsClickOpUnLoad: |
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139 { |
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140 if(!KSecurityPolicy_WriteDeviceData().CheckPolicy(iWsOwner->ClientMessage(),__PLATSEC_DIAGNOSTIC_STRING("Capability check failed for RSoundPlugIn::UnLoad API"))) |
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141 { |
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142 User::Leave(KErrPermissionDenied); |
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143 } |
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144 if (iIsChangeable) |
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145 Unload(); |
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146 else |
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147 SetReply(KErrNotSupported); |
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148 } |
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149 break; |
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150 case EWsClickOpLoad: |
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151 { |
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152 if(!KSecurityPolicy_WriteDeviceData().CheckPolicy(iWsOwner->ClientMessage(),__PLATSEC_DIAGNOSTIC_STRING("Capability check failed for RSoundPlugIn::Load API"))) |
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153 { |
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154 User::Leave(KErrPermissionDenied); |
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155 } |
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156 if (iIsChangeable) |
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157 LoadNewLibraryL(iWsOwner->BufferTPtr((TText*)(pData.Int+1),*pData.Int)); |
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158 else |
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159 SetReply(KErrNotSupported); |
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160 } |
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161 break; |
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162 case EWsClickOpSetKeyClick: |
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163 { |
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164 if(KSecurityPolicy_WriteDeviceData().CheckPolicy(iWsOwner->ClientMessage(),__PLATSEC_DIAGNOSTIC_STRING("Capability check failed for RSoundPlugIn::SetKeyClick API"))) |
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165 { |
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166 iKeyClickEnabled=*pData.Bool; |
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167 } |
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168 } |
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169 break; |
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170 case EWsClickOpSetPenClick: |
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171 { |
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172 if(KSecurityPolicy_WriteDeviceData().CheckPolicy(iWsOwner->ClientMessage(),__PLATSEC_DIAGNOSTIC_STRING("Capability check failed for RSoundPlugIn::SetPenClick API"))) |
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173 { |
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174 iPenClickEnabled=*pData.Bool; |
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175 } |
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176 } |
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177 break; |
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178 case EWsClickOpKeyClickEnabled: |
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179 SetReply(iKeyClickEnabled); |
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180 break; |
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181 case EWsClickOpPenClickEnabled: |
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182 SetReply(iPenClickEnabled); |
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183 break; |
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184 case EWsClickOpCommandReply: |
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185 { |
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186 TInt reply=RSoundPlugIn::ESoundWrongPlugIn; |
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187 if (iHandler && iThirdUid==ThirdUid() && iThirdUid!=TUid::Null()) |
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188 TRAP(reply, reply = iHandler->CommandReplyL(*pData.Int,(TAny*)(pData.Int+1))); |
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189 SetReply(reply); |
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190 } |
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191 break; |
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192 default: |
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193 OwnerPanic(EWservPanicOpcode); |
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194 break; |
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195 } |
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196 } |