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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: Class header for CWsfWlanScanner |
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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 #ifndef C_WSFWLANSETTINGSACCESSOR_H |
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20 #define C_WSFWLANSETTINGSACCESSOR_H |
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21 |
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22 // EXTERNAL INCLUDES |
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23 #include <e32base.h> |
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24 #include <commsdattypesv1_1.h> |
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25 |
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26 // INTERNAL INCLUDES |
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27 #include "wlanmgmtcommon.h" |
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28 #include "wlanscaninfo.h" |
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29 |
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30 |
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31 // FORWARD DECLARATIONS |
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32 class CCDWlanDeviceSettingsRecord; |
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33 class MWsfWlanScanIntervalChangeObserver; |
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34 |
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35 |
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36 // CLASS DEFINITION |
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37 /** |
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38 * Class to monitor WLAN background scan interval and Show WLAN availability |
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39 * flag value |
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40 * |
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41 * @since S60 5.0 |
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42 * @lib wsfserver.exe |
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43 */ |
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44 NONSHARABLE_CLASS( CWsfWlanSettingsAccessor ): public CActive |
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45 { |
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46 public: // Constructors and destructor |
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47 /** |
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48 * Factory function. |
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49 * @since S60 5.0 |
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50 * @param aDbSession Reference to the database session to use |
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51 * @return Class instance |
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52 */ |
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53 static CWsfWlanSettingsAccessor* NewL( |
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54 CommsDat::CMDBSession& aDbSession ); |
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55 |
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56 /** |
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57 * Factory function. |
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58 * @since S60 5.0 |
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59 * @param aDbSession Reference to the database session to use |
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60 * @return Class instance |
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61 */ |
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62 static CWsfWlanSettingsAccessor* NewLC( |
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63 CommsDat::CMDBSession& aDbSession ); |
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64 |
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65 /** |
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66 * Destructor. |
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67 */ |
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68 ~CWsfWlanSettingsAccessor(); |
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69 |
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70 |
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71 private: // Constructors |
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72 /** |
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73 * Constructor |
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74 * @since S60 5.0 |
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75 * @param aDbSession Reference to the database session to use |
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76 * @return Class instance |
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77 */ |
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78 CWsfWlanSettingsAccessor( CommsDat::CMDBSession& aDbSession ); |
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79 |
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80 /** |
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81 * Second-phase constructor. |
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82 * @since S60 5.0 |
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83 */ |
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84 void ConstructL(); |
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85 |
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86 |
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87 public: // new methods |
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88 /** |
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89 * Returns the value of the scan interval |
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90 * @since S60 5.0 |
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91 * @return The value of the scan interval in seconds |
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92 */ |
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93 TUint ScanInterval() const; |
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94 |
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95 /** |
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96 * Returns the value of the show WLAN availability flag |
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97 * @since S60 5.0 |
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98 * @return The value of the flag |
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99 */ |
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100 TBool ShowAvailability() const; |
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101 |
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102 /** |
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103 * Requests notification for when the scan interval changes |
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104 * @since S60 5.0 |
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105 * @param aObserver The observer object to be notified |
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106 */ |
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107 void RequestNotificationL( |
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108 MWsfWlanScanIntervalChangeObserver& aObserver ); |
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109 |
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110 /** |
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111 * Cancels the change notifications |
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112 * @since S60 5.0 |
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113 */ |
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114 void CancelNotifications(); |
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115 |
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116 |
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117 private: // New methods |
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118 /** |
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119 * Does the actual setting check |
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120 * @since S60 5.0 |
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121 * @param aBgScanInterval Variable to store the latest background scan |
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122 * interval value |
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123 * @param aShowAvailability Variable to store the latest Show WLAN |
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124 * availability flag value |
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125 */ |
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126 void DoCheckSettingL( TUint& aBgScanInterval, |
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127 TBool& aShowAvailability); |
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128 |
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129 /** |
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130 * Checks if the current bgscaninterval/availability flag is different |
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131 * from the previously retrieved value |
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132 * @since S60 5.0 |
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133 * @return ETrue if the settings has been changed |
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134 */ |
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135 TBool CheckIfSettingChangedL(); |
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136 |
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137 /** |
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138 * Reissues the request for database notification |
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139 * @since S60 5.0 |
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140 */ |
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141 void IssueNotificationRequestL(); |
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142 |
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143 |
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144 private: // from CActive |
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145 /** |
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146 * Implements cancellation of an outstanding request. |
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147 * @since S60 5.0 |
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148 */ |
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149 void DoCancel(); |
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150 |
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151 /** |
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152 * Handles an active object's request completion event. |
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153 * @since S60 5.0 |
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154 */ |
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155 void RunL(); |
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156 |
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157 /** |
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158 * Handles a leave occurring in RunL(). |
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159 * @since S60 5.0 |
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160 * @param aError Leave code |
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161 * @return aError |
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162 */ |
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163 TInt RunError( TInt aError ); |
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164 |
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165 |
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166 private: // Data |
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167 /** |
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168 * Handle to the database session (not owned) |
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169 */ |
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170 CommsDat::CMDBSession* iDbSession; |
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171 |
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172 /** |
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173 * Reference to the observer object (not owned) |
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174 */ |
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175 MWsfWlanScanIntervalChangeObserver* iChangeObserver; |
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176 |
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177 /** |
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178 * Instance of the WLAN settings record (owned) |
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179 */ |
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180 CCDWlanDeviceSettingsRecord* iWlanSettingsRecord; |
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181 |
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182 /** |
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183 * The last retrieved bgscaninterval value (in seconds) |
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184 */ |
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185 TUint iScanInterval; |
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186 |
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187 /** |
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188 * Table ID for the WLAN settings table |
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189 */ |
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190 CommsDat::TMDBElementId iTableId; |
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191 |
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192 /** |
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193 * Hold-up timer to avoid notification bursts |
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194 */ |
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195 RTimer iTimer; |
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196 |
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197 /** |
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198 * Indicates whether the processing has been activated but got held up |
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199 */ |
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200 TBool iBeingHeldUp; |
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201 |
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202 /** |
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203 * Indicates whether show wlan availability flag is on |
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204 */ |
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205 TBool iShowAvailability; |
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206 }; |
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207 |
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208 #endif // C_WSFWLANSETTINGSACCESSOR_H |
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209 |