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1 /* |
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2 * Copyright (c) 2009 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: Contains logic for watching certain disk's space |
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15 * |
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16 */ |
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17 #include <pathinfo.h> |
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18 #include "irdiskspaceobserver.h" |
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19 #include "irdiskspaceobserverinterface.h" |
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20 |
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21 const TDriveNumber KQtIRDefaultDrive = EDriveC; |
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22 |
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23 const TUint KDriveAValue = 'A'; |
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24 const TUint KDriveZValue = 'Z'; |
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25 const TUint KDriveaValue = 'a'; |
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26 const TUint KDrivezValue = 'z'; |
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27 |
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28 static TDriveNumber phoneMemRootDrive(); |
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29 |
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30 // --------------------------------------------------------------------------- |
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31 // Constructor |
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32 // --------------------------------------------------------------------------- |
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33 // |
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34 CIRDiskSpaceObserver* CIRDiskSpaceObserver::NewL(MIRDiskSpaceObserverInterface* aObserver) |
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35 { |
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36 CIRDiskSpaceObserver* self = new (ELeave) CIRDiskSpaceObserver(aObserver); |
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37 |
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38 CleanupStack::PushL(self); |
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39 self->ConstructL(); |
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40 CleanupStack::Pop(self); |
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41 return self; |
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42 |
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43 } |
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44 |
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45 // --------------------------------------------------------------------------- |
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46 // Second stage constructor |
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47 // --------------------------------------------------------------------------- |
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48 // |
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49 void CIRDiskSpaceObserver::ConstructL() |
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50 { |
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51 CActiveScheduler::Add(this); |
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52 User::LeaveIfError(iFs.Connect()); |
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53 } |
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54 |
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55 // --------------------------------------------------------------------------- |
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56 // C++ Constructor |
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57 // --------------------------------------------------------------------------- |
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58 // |
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59 CIRDiskSpaceObserver::CIRDiskSpaceObserver( MIRDiskSpaceObserverInterface* aObserver ) |
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60 : CActive( CActive::EPriorityStandard ), |
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61 iObserver( aObserver ), |
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62 iCriticalLevel(0) |
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63 { |
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64 } |
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65 |
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66 // --------------------------------------------------------------------------- |
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67 // Destructor |
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68 // --------------------------------------------------------------------------- |
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69 // |
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70 CIRDiskSpaceObserver::~CIRDiskSpaceObserver() |
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71 { |
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72 Cancel(); |
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73 iFs.Close(); |
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74 } |
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75 |
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76 // --------------------------------------------------------------------------- |
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77 // Critical Level |
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78 // --------------------------------------------------------------------------- |
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79 // |
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80 TInt64 CIRDiskSpaceObserver::CriticalLevel() const |
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81 { |
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82 if(IsActive()) |
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83 { |
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84 return iCriticalLevel; |
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85 } |
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86 else |
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87 { |
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88 return -1; |
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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 // Start Monitoring |
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94 // --------------------------------------------------------------------------- |
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95 // |
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96 void CIRDiskSpaceObserver::Start(const TInt64 aCriticalLevel) |
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97 { |
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98 Cancel(); |
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99 iCriticalLevel = aCriticalLevel; |
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100 Run(); |
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101 } |
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102 |
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103 |
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104 // --------------------------------------------------------------------------- |
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105 // From class CActive. |
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106 // Cancels the pending request. |
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107 // --------------------------------------------------------------------------- |
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108 // |
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109 void CIRDiskSpaceObserver::DoCancel() |
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110 { |
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111 iFs.NotifyDiskSpaceCancel(iStatus); |
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112 } |
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113 |
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114 |
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115 // --------------------------------------------------------------------------- |
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116 // From class CActive. |
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117 // Invoked when the observed disk's free disk space has run below |
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118 // the supplied critical level. |
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119 // Notifies the observer and regenerates the request to RFs' NotifyDiskSpace. |
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120 // --------------------------------------------------------------------------- |
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121 // |
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122 void CIRDiskSpaceObserver::RunL() |
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123 { |
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124 Run(); |
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125 } |
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126 |
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127 |
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128 // --------------------------------------------------------------------------- |
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129 // Returns true if below the critical level in defined disk, otherwise false |
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130 // --------------------------------------------------------------------------- |
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131 // |
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132 TBool CIRDiskSpaceObserver::IsBelowCriticalLevel(const TInt64 aCriticalLevel) const |
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133 { |
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134 TVolumeInfo volInfo; |
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135 if(KErrNone == iFs.Volume(volInfo, KQtIRDefaultDrive)) |
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136 { |
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137 if(volInfo.iFree < aCriticalLevel) |
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138 { |
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139 return ETrue; |
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140 } |
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141 } |
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142 |
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143 return EFalse; |
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144 } |
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145 |
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146 void CIRDiskSpaceObserver::Run() |
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147 { |
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148 if( iObserver && IsBelowCriticalLevel(iCriticalLevel)) |
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149 { |
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150 iObserver->notifyLowDiskSpace((qint64)iCriticalLevel); |
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151 } |
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152 |
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153 iFs.NotifyDiskSpace(iCriticalLevel, phoneMemRootDrive(), iStatus); |
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154 SetActive(); |
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155 } |
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156 |
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157 TDriveNumber phoneMemRootDrive() |
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158 { |
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159 TParsePtrC phoneMemoryRootPath( PathInfo::PhoneMemoryRootPath() ); |
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160 TPtrC drive( phoneMemoryRootPath.Drive() ); |
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161 TUint driveValue = drive[0]; |
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162 TUint delta = 0; |
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163 if( driveValue >= KDriveAValue && |
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164 driveValue <= KDriveZValue) |
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165 { |
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166 delta = driveValue - KDriveAValue; |
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167 } |
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168 else if( driveValue >= KDriveaValue && |
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169 driveValue <= KDrivezValue) |
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170 { |
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171 delta = driveValue - KDriveaValue; |
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172 } |
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173 else |
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174 { |
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175 return KQtIRDefaultDrive; |
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176 } |
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177 |
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178 return static_cast<TDriveNumber>(EDriveA + delta); |
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179 } |