1 /* |
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2 * Copyright (c) 2007-2008 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: Implementation of CWsfWlanSettingsAccessor |
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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 // EXTERNAL INCLUDES |
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20 #include <d32dbms.h> |
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21 #include <WlanCdbCols.h> |
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22 #include <wlancontainer.h> |
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23 |
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24 #include <centralrepository.h> |
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25 #include <wlandevicesettingsinternalcrkeys.h> |
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26 #include <featmgr.h> |
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27 |
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28 // CLASS HEADER |
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29 #include "wsfwlansettingsaccessor.h" |
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30 |
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31 // INTERNAL INCLUDES |
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32 #include "wsfwlanscanintervalchangeobserver.h" |
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33 #include "wsflogger.h" |
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34 |
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35 |
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36 using namespace CommsDat; |
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37 |
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38 // background scan disabled value |
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39 static const TUint KWlanBgScanIntervalNever = 0; |
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40 |
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41 // background scan automatic scanning value |
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42 static const TUint KWlanBgScanIntervalAuto = 0xffffffff; |
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43 |
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44 // default background scan interval in seconds |
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45 static const TUint KWlanBgScanIntervalDefault = 300; |
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46 |
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47 // hold-up time after first DB notification to prevent bursts (in microseconds) |
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48 static const TUint KDbNotificationHoldupTime = 1000 * 1000; |
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49 |
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50 |
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51 |
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52 // ---------------------------------------------------------------------------- |
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53 // CWsfWlanSettingsAccessor::NewL |
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54 // ---------------------------------------------------------------------------- |
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55 // |
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56 CWsfWlanSettingsAccessor* CWsfWlanSettingsAccessor::NewL( |
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57 CMDBSession& aDbSession ) |
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58 { |
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59 CWsfWlanSettingsAccessor *thisPtr = NewLC( aDbSession ); |
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60 CleanupStack::Pop( thisPtr ); |
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61 return thisPtr; |
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62 } |
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63 |
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64 |
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65 // ---------------------------------------------------------------------------- |
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66 // CWsfWlanSettingsAccessor::NewLC |
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67 // ---------------------------------------------------------------------------- |
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68 // |
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69 CWsfWlanSettingsAccessor* CWsfWlanSettingsAccessor::NewLC( |
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70 CMDBSession& aDbSession ) |
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71 { |
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72 CWsfWlanSettingsAccessor *thisPtr = |
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73 new (ELeave) CWsfWlanSettingsAccessor( aDbSession ); |
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74 CleanupStack::PushL( thisPtr ); |
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75 thisPtr->ConstructL(); |
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76 return thisPtr; |
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77 } |
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78 |
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79 |
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80 // ---------------------------------------------------------------------------- |
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81 // CWsfWlanSettingsAccessor::CWsfWlanSettingsAccessor |
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82 // ---------------------------------------------------------------------------- |
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83 // |
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84 CWsfWlanSettingsAccessor::CWsfWlanSettingsAccessor( CMDBSession& aDbSession ): |
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85 CActive( CActive::EPriorityStandard ), |
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86 iDbSession( &aDbSession ), |
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87 iBeingHeldUp( EFalse ) |
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88 { |
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89 } |
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90 |
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91 |
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92 // ---------------------------------------------------------------------------- |
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93 // CWsfWlanSettingsAccessor::ConstructL |
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94 // ---------------------------------------------------------------------------- |
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95 // |
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96 void CWsfWlanSettingsAccessor::ConstructL() |
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97 { |
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98 CActiveScheduler::Add( this ); |
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99 |
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100 // get WLAN table id |
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101 TRAP_IGNORE( iTableId = CCDWlanDeviceSettingsRecord::TableIdL( |
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102 *iDbSession ) ); |
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103 |
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104 if ( !iTableId ) |
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105 { |
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106 iTableId = CCDWlanDeviceSettingsRecord::CreateTableL( *iDbSession ); |
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107 } |
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108 |
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109 iWlanSettingsRecord = new (ELeave) CCDWlanDeviceSettingsRecord( iTableId ); |
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110 iWlanSettingsRecord->iWlanDeviceSettingsType = KWlanUserSettings; |
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111 |
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112 if ( !iWlanSettingsRecord->FindL( *iDbSession ) ) |
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113 { |
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114 User::Leave( KErrNotFound ); |
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115 } |
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116 |
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117 User::LeaveIfError( iTimer.CreateLocal() ); |
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118 |
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119 DoCheckSettingL( iScanInterval, iShowAvailability ); |
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120 } |
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121 |
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122 |
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123 // ---------------------------------------------------------------------------- |
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124 // CWsfWlanSettingsAccessor::~CWsfWlanSettingsAccessor |
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125 // ---------------------------------------------------------------------------- |
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126 // |
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127 CWsfWlanSettingsAccessor::~CWsfWlanSettingsAccessor() |
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128 { |
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129 Cancel(); |
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130 iTimer.Close(); |
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131 iDbSession = NULL; // not owning |
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132 iChangeObserver = NULL; // not owning |
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133 delete iWlanSettingsRecord; // own |
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134 iWlanSettingsRecord = NULL; |
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135 } |
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136 |
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137 |
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138 // ---------------------------------------------------------------------------- |
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139 // CWsfWlanSettingsAccessor::ScanInterval |
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140 // ---------------------------------------------------------------------------- |
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141 // |
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142 TUint CWsfWlanSettingsAccessor::ScanInterval() const |
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143 { |
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144 LOG_ENTERFN( "CWsfWlanSettingsAccessor::ScanInterval" ); |
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145 return iScanInterval; |
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146 } |
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147 |
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148 |
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149 // ---------------------------------------------------------------------------- |
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150 // CWsfWlanSettingsAccessor::ShowAvailability |
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151 // ---------------------------------------------------------------------------- |
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152 // |
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153 TBool CWsfWlanSettingsAccessor::ShowAvailability() const |
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154 { |
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155 LOG_ENTERFN( "CWsfWlanSettingsAccessor::ShowAvailability" ); |
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156 return iShowAvailability; |
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157 } |
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158 |
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159 |
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160 // ---------------------------------------------------------------------------- |
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161 // CWsfWlanSettingsAccessor::RequestNotificationL |
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162 // ---------------------------------------------------------------------------- |
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163 // |
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164 void CWsfWlanSettingsAccessor::RequestNotificationL( |
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165 MWsfWlanScanIntervalChangeObserver& aObserver ) |
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166 { |
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167 LOG_ENTERFN( "CWsfWlanSettingsAccessor::RequestNotificationL" ); |
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168 iChangeObserver = &aObserver; |
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169 IssueNotificationRequestL(); |
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170 } |
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171 |
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172 |
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173 // ---------------------------------------------------------------------------- |
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174 // CWsfWlanSettingsAccessor::IssueNotificationRequestL |
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175 // ---------------------------------------------------------------------------- |
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176 // |
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177 void CWsfWlanSettingsAccessor::IssueNotificationRequestL() |
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178 { |
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179 LOG_ENTERFN( "CWsfWlanSettingsAccessor::IssueNotificationRequestL" ); |
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180 if ( iChangeObserver ) |
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181 { |
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182 if ( !IsActive() ) |
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183 { |
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184 LOG_WRITE( "issuing..." ); |
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185 User::LeaveIfError( iWlanSettingsRecord->RequestNotification( |
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186 *iDbSession, iStatus ) ); |
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187 SetActive(); |
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188 } |
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189 } |
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190 } |
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191 |
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192 |
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193 // ---------------------------------------------------------------------------- |
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194 // CWsfWlanSettingsAccessor::CancelNotifications |
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195 // ---------------------------------------------------------------------------- |
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196 // |
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197 void CWsfWlanSettingsAccessor::CancelNotifications() |
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198 { |
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199 LOG_ENTERFN( "CWsfWlanSettingsAccessor::CancelNotifications" ); |
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200 Cancel(); |
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201 iChangeObserver = NULL; |
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202 } |
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203 |
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204 |
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205 // ---------------------------------------------------------------------------- |
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206 // CWsfWlanSettingsAccessor::DoCheckSettingL |
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207 // ---------------------------------------------------------------------------- |
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208 // |
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209 void CWsfWlanSettingsAccessor::DoCheckSettingL( TUint& aBgScanInterval, |
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210 TBool& aShowAvailability ) |
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211 { |
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212 LOG_ENTERFN( "CWsfWlanSettingsAccessor::DoCheckSettingL" ); |
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213 // open the wlan settings table |
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214 |
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215 iWlanSettingsRecord->RefreshL( *iDbSession ); |
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216 FeatureManager::InitializeLibL(); |
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217 |
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218 aShowAvailability = ( iWlanSettingsRecord->iBgScanInterval != |
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219 KWlanBgScanIntervalNever ); |
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220 |
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221 // read the common value |
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222 if ( iWlanSettingsRecord->iBgScanInterval == KWlanBgScanIntervalNever ) |
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223 { |
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224 if ( iWlanSettingsRecord->iSavedBgScanInterval == |
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225 KWlanBgScanIntervalNever ) |
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226 { |
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227 TInt defaultScanInterval( KWlanBgScanIntervalDefault ); |
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228 |
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229 if (FeatureManager::FeatureSupported( KFeatureIdPowerSave )) |
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230 { |
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231 // Read the default value from CenRep (different in PSM mode) |
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232 CRepository* cenrep = CRepository::NewL( |
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233 KCRUidWlanDeviceSettingsRegistryId ); |
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234 cenrep->Get( KWlanDefaultBGScanInterval, defaultScanInterval ); |
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235 delete cenrep; |
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236 } |
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237 |
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238 aBgScanInterval = TUint( defaultScanInterval ); |
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239 } |
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240 else |
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241 { |
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242 aBgScanInterval = iWlanSettingsRecord->iSavedBgScanInterval; |
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243 } |
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244 } |
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245 else |
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246 { |
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247 aBgScanInterval = iWlanSettingsRecord->iBgScanInterval; |
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248 } |
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249 |
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250 // Set scan interval to default value if adaptive scanning value is |
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251 // found from db |
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252 if (aBgScanInterval == KWlanBgScanIntervalAuto ) |
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253 { |
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254 TInt defaultScanInterval( KWlanBgScanIntervalDefault ); |
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255 aBgScanInterval = TUint( defaultScanInterval ); |
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256 } |
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257 |
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258 FeatureManager::UnInitializeLib(); |
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259 LOG_WRITEF( "current bgScanInterval = %d sec", aBgScanInterval ); |
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260 LOG_WRITEF( "current showAvailability = %d", aShowAvailability ); |
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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 // CWsfWlanSettingsAccessor::CheckIfSettingChangedL |
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266 // ---------------------------------------------------------------------------- |
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267 // |
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268 TBool CWsfWlanSettingsAccessor::CheckIfSettingChangedL() |
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269 { |
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270 LOG_ENTERFN( "CWsfWlanSettingsAccessor::CheckIfSettingChangedL" ); |
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271 LOG_WRITEF( "previous bgScanInterval = %d", iScanInterval ); |
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272 LOG_WRITEF( "previous showAvailability = %d", iShowAvailability ); |
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273 TUint newBgsi( 0 ); |
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274 TBool newSaf( EFalse ); |
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275 |
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276 DoCheckSettingL( newBgsi, newSaf ); |
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277 |
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278 TBool retval( newBgsi != iScanInterval || newSaf != iShowAvailability ); |
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279 iScanInterval = newBgsi; |
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280 iShowAvailability = newSaf; |
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281 |
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282 return retval; |
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283 } |
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284 |
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285 |
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286 // ---------------------------------------------------------------------------- |
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287 // CWsfWlanSettingsAccessor::RunL |
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288 // ---------------------------------------------------------------------------- |
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289 // |
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290 void CWsfWlanSettingsAccessor::RunL() |
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291 { |
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292 LOG_ENTERFN( "CWsfWlanSettingsAccessor::RunL" ); |
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293 LOG_WRITEF( "iStatus.Int() = %d", iStatus.Int() ); |
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294 |
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295 // Symbian DB notifiers are triggered by everything that may happen in |
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296 // commsdat, so it would be very resource-consuming to check the value on |
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297 // each database event |
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298 // Workaround: 1-sec delay when first callback is received |
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299 |
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300 if ( !iBeingHeldUp ) |
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301 { |
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302 LOG_WRITE( "starting anti-burst delay" ); |
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303 iBeingHeldUp = ETrue; |
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304 iTimer.After( iStatus, TTimeIntervalMicroSeconds32( |
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305 KDbNotificationHoldupTime ) ); |
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306 SetActive(); |
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307 } |
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308 else |
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309 { |
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310 LOG_WRITE( "checking changes" ); |
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311 iBeingHeldUp = EFalse; |
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312 if ( CheckIfSettingChangedL() ) |
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313 { |
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314 LOG_WRITE( "setting changed, notifying observer" ); |
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315 iChangeObserver->WlanScanIntervalChangedL( iScanInterval, |
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316 iShowAvailability ); |
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317 } |
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318 |
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319 IssueNotificationRequestL(); |
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320 } |
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321 |
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322 } |
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323 |
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324 |
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325 // ---------------------------------------------------------------------------- |
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326 // CWsfWlanSettingsAccessor::DoCancel |
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327 // ---------------------------------------------------------------------------- |
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328 // |
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329 void CWsfWlanSettingsAccessor::DoCancel() |
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330 { |
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331 iTimer.Cancel(); |
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332 iBeingHeldUp = EFalse; |
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333 |
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334 if ( iWlanSettingsRecord ) |
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335 { |
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336 iWlanSettingsRecord->CancelNotification( *iDbSession, iStatus ); |
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337 } |
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338 } |
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339 |
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340 |
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341 // ---------------------------------------------------------------------------- |
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342 // CWsfWlanSettingsAccessor::RunError |
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343 // ---------------------------------------------------------------------------- |
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344 // |
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345 TInt CWsfWlanSettingsAccessor::RunError( TInt /*aError*/ ) |
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346 { |
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347 TRAP_IGNORE( IssueNotificationRequestL() ); |
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348 return KErrNone; |
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349 } |
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350 |
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