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1 /* |
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2 * Copyright (c) 2006-2006 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: Stores element data and writes it to stream |
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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 #include <connect/sbdefs.h> |
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20 |
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21 #include "cbsbackupobserver.h" |
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22 |
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23 |
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24 // ======== MEMBER FUNCTIONS ======== |
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25 |
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26 // --------------------------------------------------------------------------- |
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27 // CBSBackupObserver::NewL |
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28 // --------------------------------------------------------------------------- |
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29 // |
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30 CBSBackupObserver* CBSBackupObserver::NewL() |
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31 { |
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32 CBSBackupObserver* self = NewLC(); |
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33 CleanupStack::Pop(); |
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34 return self; |
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35 } |
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36 |
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37 // --------------------------------------------------------------------------- |
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38 // CBSBackupObserver::NewLC |
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39 // --------------------------------------------------------------------------- |
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40 // |
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41 CBSBackupObserver* CBSBackupObserver::NewLC() |
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42 { |
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43 CBSBackupObserver* self = new (ELeave) CBSBackupObserver(); |
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44 CleanupStack::PushL( self ); |
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45 self->ConstructL(); |
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46 return self; |
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47 } |
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48 |
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49 // --------------------------------------------------------------------------- |
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50 // CBSBackupObserver::ConstructL |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 void CBSBackupObserver::ConstructL() |
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54 { |
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55 CActiveScheduler::Add( this ); |
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56 iProperty.Attach( KUidSystemCategory, conn::KUidBackupRestoreKey ); |
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57 iLatestState = BackupStateL(); |
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58 Subscribe(); |
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59 } |
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60 |
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61 // --------------------------------------------------------------------------- |
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62 // CBSBackupObserver::CBSBackupObserver |
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63 // --------------------------------------------------------------------------- |
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64 // |
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65 CBSBackupObserver::CBSBackupObserver() : |
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66 CActive( EPriorityStandard ) |
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67 { |
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68 } |
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69 |
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70 // --------------------------------------------------------------------------- |
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71 // CBSBackupObserver::~CBSBackupObserver |
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72 // --------------------------------------------------------------------------- |
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73 // |
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74 CBSBackupObserver::~CBSBackupObserver() |
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75 { |
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76 Cancel(); |
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77 iObservers.Close(); |
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78 } |
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79 |
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80 // --------------------------------------------------------------------------- |
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81 // CBSBackupObserver::RunL |
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82 // --------------------------------------------------------------------------- |
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83 // |
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84 void CBSBackupObserver::RunL() |
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85 { |
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86 MBSBackupObserver::TBackupState newState = BackupStateL(); |
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87 if( newState != iLatestState ) |
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88 { |
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89 // state changed |
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90 iLatestState = newState; |
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91 NotifyObserversL( iLatestState ); |
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92 } |
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93 Subscribe(); |
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94 } |
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95 |
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96 // --------------------------------------------------------------------------- |
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97 // CBSBackupObserver::DoCancel |
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98 // --------------------------------------------------------------------------- |
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99 // |
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100 void CBSBackupObserver::DoCancel() |
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101 { |
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102 iProperty.Cancel(); |
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103 } |
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104 |
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105 // --------------------------------------------------------------------------- |
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106 // CBSBackupObserver::RunError |
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107 // --------------------------------------------------------------------------- |
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108 // |
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109 TInt CBSBackupObserver::RunError( TInt /*aError*/ ) |
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110 { |
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111 return KErrNone; |
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112 } |
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113 |
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114 // --------------------------------------------------------------------------- |
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115 // CBSBackupObserver::RegisterObserver |
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116 // --------------------------------------------------------------------------- |
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117 // |
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118 TInt CBSBackupObserver::RegisterObserver( MBSBackupObserver* aObserver ) |
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119 { |
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120 TInt err = iObservers.InsertInAddressOrder( aObserver ); |
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121 if( err == KErrAlreadyExists ) |
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122 { |
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123 // ignore duplicate registration |
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124 err = KErrNone; |
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125 } |
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126 |
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127 // if backup is already active -> notify |
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128 if( iLatestState == MBSBackupObserver::EBackupActive ) |
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129 { |
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130 TRAP_IGNORE( aObserver->HandleBackupStateL( iLatestState ) ); |
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131 } |
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132 |
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133 return err; |
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134 } |
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135 |
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136 // --------------------------------------------------------------------------- |
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137 // CBSBackupObserver::UnregisterObserver |
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138 // --------------------------------------------------------------------------- |
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139 // |
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140 void CBSBackupObserver::UnregisterObserver( MBSBackupObserver* aObserver ) |
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141 { |
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142 TInt index = iObservers.FindInAddressOrder( aObserver ); |
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143 if( index != KErrNotFound ) |
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144 { |
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145 iObservers.Remove( index ); |
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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 // CBSBackupObserver::Subscribe |
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151 // --------------------------------------------------------------------------- |
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152 // |
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153 void CBSBackupObserver::Subscribe() |
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154 { |
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155 if( IsActive() ) |
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156 { |
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157 // already active |
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158 return; |
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159 } |
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160 iStatus = KRequestPending; |
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161 iProperty.Subscribe( iStatus ); |
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162 SetActive(); |
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163 } |
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164 |
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165 // --------------------------------------------------------------------------- |
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166 // CBSBackupObserver::NotifyObservers |
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167 // --------------------------------------------------------------------------- |
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168 // |
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169 void CBSBackupObserver::NotifyObserversL( MBSBackupObserver::TBackupState aState ) |
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170 { |
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171 TInt count = iObservers.Count(); |
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172 for( TInt i = 0; i < count; i++ ) |
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173 { |
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174 TRAP_IGNORE( iObservers[i]->HandleBackupStateL( aState ) ); |
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175 } |
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176 } |
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177 |
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178 // --------------------------------------------------------------------------- |
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179 // CBSBackupObserver::BackupState |
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180 // --------------------------------------------------------------------------- |
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181 // |
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182 MBSBackupObserver::TBackupState CBSBackupObserver::BackupStateL() |
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183 { |
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184 TInt value = 0; |
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185 User::LeaveIfError( iProperty.Get( value ) ); |
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186 if( value == 0 || |
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187 value == ( conn::EBURNormal | conn::ENoBackup ) ) |
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188 { |
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189 // backup or restore is not active at the moment |
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190 return MBSBackupObserver::EBackupNotActive; |
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191 } |
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192 return MBSBackupObserver::EBackupActive; |
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193 } |
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194 |
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195 // End of file |