1 /* |
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2 * ============================================================================ |
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3 * Name : btnotifwrapper.cpp |
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4 * Part of : bluetoothengine / btnotif |
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5 * Description : Wrapper for Bluetooth Notifiers |
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6 * |
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7 * Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). |
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8 * All rights reserved. |
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9 * This component and the accompanying materials are made available |
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10 * under the terms of "Eclipse Public License v1.0" |
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11 * which accompanies this distribution, and is available |
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12 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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13 * |
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14 * Initial Contributors: |
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15 * Nokia Corporation - initial contribution. |
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16 * |
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17 * Contributors: |
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18 * Nokia Corporation |
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19 * ============================================================================ |
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20 * Template version: 4.1 |
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21 */ |
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22 |
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23 #include "btnotifwrapper.h" |
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24 #include <btnotif.h> |
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25 #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS |
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26 #include <btextnotifierspartner.h> |
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27 #endif |
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28 |
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29 /** Identifier of the active object. */ |
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30 const TInt KWrapperActive = 10; |
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31 |
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32 // ======== MEMBER FUNCTIONS ======== |
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33 |
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34 |
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35 // --------------------------------------------------------------------------- |
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36 // ?description_if_needed |
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37 // --------------------------------------------------------------------------- |
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38 // |
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39 CBTNotifWrapper::CBTNotifWrapper( const TUid& aUid, const TUid& aChannel ) |
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40 : MEikSrvNotifierBase2(), |
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41 iUid( aUid ), |
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42 iChannel( aChannel ), |
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43 iResponsePtr( NULL, 0 ) |
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44 { |
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45 } |
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46 |
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47 |
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48 // --------------------------------------------------------------------------- |
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49 // ?description_if_needed |
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50 // --------------------------------------------------------------------------- |
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51 // |
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52 void CBTNotifWrapper::ConstructL() |
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53 { |
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54 // lazy initialization: members are created and destroyed when needed. |
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55 } |
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56 |
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57 |
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58 // --------------------------------------------------------------------------- |
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59 // NewLC |
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60 // --------------------------------------------------------------------------- |
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61 // |
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62 CBTNotifWrapper* CBTNotifWrapper::NewLC( const TUid& aUid, const TUid& aChannel ) |
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63 { |
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64 CBTNotifWrapper* self = new( ELeave ) CBTNotifWrapper( aUid, aChannel ); |
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65 CleanupStack::PushL( self ); |
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66 self->ConstructL(); |
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67 return self; |
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68 } |
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69 |
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70 // --------------------------------------------------------------------------- |
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71 // ?description_if_needed |
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72 // --------------------------------------------------------------------------- |
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73 // |
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74 CBTNotifWrapper::~CBTNotifWrapper() |
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75 { |
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76 Cancel(); // Cleans up buffers |
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77 delete iActive; |
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78 iBTNotif.Close(); |
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79 } |
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80 |
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81 // --------------------------------------------------------------------------- |
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82 // From class MEikSrvNotifierBase2. |
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83 // Frees all the resources i.e. destruct ourselves. |
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84 // --------------------------------------------------------------------------- |
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85 // |
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86 void CBTNotifWrapper::Release() |
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87 { |
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88 delete this; |
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89 } |
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90 |
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91 // --------------------------------------------------------------------------- |
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92 // From class MEikSrvNotifierBase2. |
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93 // ?implementation_description |
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94 // --------------------------------------------------------------------------- |
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95 // |
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96 MEikSrvNotifierBase2::TNotifierInfo CBTNotifWrapper::RegisterL() |
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97 { |
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98 return Info(); |
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99 } |
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100 |
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101 |
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102 // --------------------------------------------------------------------------- |
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103 // From class MEikSrvNotifierBase2. |
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104 // ?implementation_description |
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105 // --------------------------------------------------------------------------- |
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106 // |
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107 MEikSrvNotifierBase2::TNotifierInfo CBTNotifWrapper::Info() const |
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108 { |
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109 MEikSrvNotifierBase2::TNotifierInfo info; |
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110 info.iUid = iUid; |
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111 info.iChannel = iChannel; |
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112 info.iPriority = MEikSrvNotifierBase2::ENotifierPriorityVHigh; |
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113 return info; |
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114 } |
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115 |
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116 |
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117 // --------------------------------------------------------------------------- |
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118 // From class MEikSrvNotifierBase2. |
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119 // ?implementation_description |
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120 // --------------------------------------------------------------------------- |
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121 // |
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122 TPtrC8 CBTNotifWrapper::StartL(const TDesC8& aBuffer) |
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123 { |
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124 if( !IsSync() ) |
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125 { |
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126 // due to the charasteristics of Bluetooth and UI operations, |
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127 // most of Bluetooth notifiers do not support synchronous version. |
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128 User::Leave( KErrNotSupported ); |
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129 } |
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130 // Call notifier server and get response. |
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131 if( !iBTNotif.Handle() ) |
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132 { |
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133 User::LeaveIfError( iBTNotif.Connect() ); |
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134 } |
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135 User::LeaveIfError( iBTNotif.StartNotifier( iUid, aBuffer ) ); |
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136 iBTNotif.Close(); |
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137 return KNullDesC8(); |
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138 } |
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139 |
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140 // --------------------------------------------------------------------------- |
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141 // From class MEikSrvNotifierBase2. |
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142 // ?implementation_description |
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143 // --------------------------------------------------------------------------- |
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144 // |
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145 void CBTNotifWrapper::StartL(const TDesC8& aBuffer, TInt aReplySlot, |
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146 const RMessagePtr2& aMessage) |
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147 { |
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148 if( !iMessage.IsNull() ) |
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149 { |
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150 aMessage.Complete( KErrAlreadyExists ); |
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151 return; |
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152 } |
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153 |
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154 // Call notifier server and get response. |
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155 if( !iBTNotif.Handle() ) |
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156 { |
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157 User::LeaveIfError( iBTNotif.Connect() ); |
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158 } |
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159 if( !iActive ) |
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160 { |
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161 iActive = CBtSimpleActive::NewL( *this, KWrapperActive ); |
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162 } |
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163 |
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164 // We need to store the parameters locally, as aBuffer is destroyed after |
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165 // returning from this call. We do it on the heap, so we do not permanently |
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166 // consume memory for the buffer. |
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167 |
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168 iParamsBuf.CreateL( aBuffer ); |
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169 TInt len = aMessage.GetDesMaxLength( aReplySlot ); |
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170 |
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171 iResponseBuf.CreateL( len ); |
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172 aMessage.ReadL( aReplySlot, iResponseBuf ); |
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173 |
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174 iBTNotif.StartNotifierAndGetResponse( iActive->RequestStatus(), |
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175 iUid, iParamsBuf, iResponseBuf ); |
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176 iActive->GoActive(); |
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177 // record the request |
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178 iReplySlot = aReplySlot; |
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179 iMessage = aMessage; |
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180 } |
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181 |
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182 // --------------------------------------------------------------------------- |
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183 // From class MEikSrvNotifierBase2. |
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184 // ?implementation_description |
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185 // --------------------------------------------------------------------------- |
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186 // |
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187 void CBTNotifWrapper::Cancel() |
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188 { |
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189 // Call notifier server to cancel. |
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190 if( iActive ) |
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191 { |
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192 iActive->Cancel(); |
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193 } |
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194 if( !iMessage.IsNull() ) |
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195 { |
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196 iMessage.Complete( KErrCancel ); |
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197 } |
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198 iReplySlot = 0; |
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199 iParamsBuf.Close(); |
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200 iResponseBuf.Close(); |
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201 } |
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202 |
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203 // --------------------------------------------------------------------------- |
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204 // From class MEikSrvNotifierBase2. |
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205 // Synchronous notifier update. |
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206 // --------------------------------------------------------------------------- |
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207 // |
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208 TPtrC8 CBTNotifWrapper::UpdateL(const TDesC8& aBuffer) |
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209 { |
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210 // Call notifier server and get response. |
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211 TBuf8<256> response; |
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212 if( !iBTNotif.Handle() ) |
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213 { |
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214 User::LeaveIfError( iBTNotif.Connect() ); |
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215 } |
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216 User::LeaveIfError( iBTNotif.UpdateNotifier( iUid, aBuffer, response ) ); |
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217 return response; |
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218 } |
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219 |
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220 // --------------------------------------------------------------------------- |
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221 // From class MEikSrvNotifierBase2. |
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222 // Asynchronous notifier update. |
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223 // --------------------------------------------------------------------------- |
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224 // |
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225 void CBTNotifWrapper::UpdateL(const TDesC8& aBuffer, TInt aReplySlot, const RMessagePtr2& aMessage) |
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226 { |
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227 (void) aReplySlot; |
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228 (void) aBuffer; |
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229 if( iMessage.IsNull() ) |
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230 { |
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231 // There is no outstanding request, can't relate this to anything. |
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232 aMessage.Complete( KErrNotFound ); |
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233 return; |
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234 } |
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235 // Call notifier server and get response. |
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236 // Async updates are just for updating parameters, so they are still |
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237 // done synchronously between here and btnotif, as they don't |
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238 // require any user feedback or other response with |
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239 // asynchronous/long cycles. |
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240 TPtrC8 response = UpdateL( aBuffer ); |
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241 aMessage.WriteL( aReplySlot, response ); |
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242 aMessage.Complete( KErrNone ); |
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243 } |
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244 |
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245 // --------------------------------------------------------------------------- |
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246 // From class MBtSimpleActiveObserver. |
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247 // Callback to notify that an outstanding request has completed. |
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248 // --------------------------------------------------------------------------- |
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249 // |
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250 void CBTNotifWrapper::RequestCompletedL( CBtSimpleActive* aActive, TInt aStatus ) |
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251 { |
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252 ASSERT( aActive->RequestId() == KWrapperActive ); |
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253 (void) aActive; |
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254 if( !iMessage.IsNull() ) |
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255 { |
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256 TInt err( aStatus ); |
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257 if( !err ) |
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258 { |
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259 err = iMessage.Write( iReplySlot, iResponseBuf ); |
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260 } |
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261 iMessage.Complete( err ); |
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262 } |
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263 // Clean up after usage. |
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264 iBTNotif.Close(); |
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265 delete iActive; |
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266 iActive = NULL; |
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267 } |
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268 |
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269 |
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270 // --------------------------------------------------------------------------- |
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271 // From class MBtSimpleActiveObserver. |
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272 // Cancel and clean up all requests related to the active object. |
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273 // --------------------------------------------------------------------------- |
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274 // |
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275 void CBTNotifWrapper::CancelRequest( TInt aRequestId ) |
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276 { |
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277 ASSERT( aRequestId == KWrapperActive ); |
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278 (void) aRequestId; |
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279 iBTNotif.CancelNotifier( iUid ); |
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280 } |
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281 |
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282 // --------------------------------------------------------------------------- |
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283 // From class MBtSimpleActiveObserver. |
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284 // |
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285 // --------------------------------------------------------------------------- |
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286 // |
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287 void CBTNotifWrapper::HandleError( CBtSimpleActive* aActive, |
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288 TInt aError ) |
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289 { |
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290 // RequestCompletedL() is not leavable. |
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291 (void) aActive; |
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292 (void) aError; |
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293 } |
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294 |
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295 // --------------------------------------------------------------------------- |
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296 // Check if this is a synchronous notifier or not. |
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297 // --------------------------------------------------------------------------- |
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298 // |
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299 TBool CBTNotifWrapper::IsSync() const |
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300 { |
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301 return ( iUid == KBTGenericInfoNotifierUid ); |
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302 } |
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