1 /* |
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2 * Copyright (c) 2004-2009 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 the License "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: |
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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 "drivewatcher.h" |
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20 #include "log.h" |
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21 |
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22 namespace Swi |
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23 { |
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24 // CDriveWatcher |
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25 _LIT(KNotificationDirectory,"mediachange\\"); |
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26 |
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27 /*static*/ CDriveWatcher* CDriveWatcher::NewL(RFs& aFs, TInt aDrive, |
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28 MDriveObserver& aObserver, |
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29 TInt aPriority) |
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30 { |
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31 CDriveWatcher* self=NewLC(aFs, aDrive, aObserver, aPriority); |
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32 CleanupStack::Pop(self); |
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33 return self; |
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34 } |
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35 |
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36 /*static*/ CDriveWatcher* CDriveWatcher::NewLC(RFs& aFs, TInt aDrive, |
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37 MDriveObserver& aObserver, |
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38 TInt aPriority) |
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39 { |
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40 CDriveWatcher* self=new(ELeave) CDriveWatcher(aFs, aDrive, aObserver, aPriority); |
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41 CleanupStack::PushL(self); |
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42 self->ConstructL(); |
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43 return self; |
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44 } |
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45 |
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46 CDriveWatcher::~CDriveWatcher() |
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47 { |
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48 Cancel(); |
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49 } |
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50 |
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51 CDriveWatcher::CDriveWatcher(RFs& aFs, TInt aDrive, MDriveObserver& aObserver, |
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52 TInt aPriority) |
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53 : CActive(aPriority), iFs(aFs), iDrive(aDrive), iObserver(aObserver) |
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54 { |
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55 CActiveScheduler::Add(this); |
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56 } |
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57 |
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58 void CDriveWatcher::ConstructL() |
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59 { |
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60 // Notify observer of media change since we're beginning from an unknown state |
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61 NotifyMediaChange(); |
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62 |
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63 // Start watching for changes |
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64 WaitForChangeL(); |
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65 } |
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66 |
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67 void CDriveWatcher::DoCancel() |
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68 { |
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69 iFs.NotifyChangeCancel(iStatus); |
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70 } |
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71 |
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72 TBool CDriveWatcher::IsMediaPresentL() |
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73 { |
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74 TVolumeInfo volumeInfo; |
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75 TInt err=iFs.Volume(volumeInfo, iDrive); |
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76 |
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77 switch (err) |
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78 { |
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79 case KErrNotReady: // No Media present |
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80 { |
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81 return EFalse; |
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82 } |
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83 |
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84 case KErrNone: // Media Present |
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85 { |
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86 return ETrue; |
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87 } |
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88 } |
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89 |
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90 User::Leave(err); |
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91 return ETrue; // Will never get here. |
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92 } |
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93 |
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94 void CDriveWatcher::NotifyMediaChange() |
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95 { |
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96 // Unsuccessful media change is not fatal, so handle here |
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97 TRAPD(err,iObserver.MediaChangeL(iDrive, IsMediaPresentL() ? MDriveObserver::EMediaInserted : MDriveObserver::EMediaRemoved)); |
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98 |
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99 if (err != KErrNone) |
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100 { |
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101 DEBUG_PRINTF2(_L8("SWI Daemon - Media change notification failed with code %d"), err); |
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102 } |
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103 } |
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104 |
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105 void CDriveWatcher::RunL() |
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106 { |
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107 NotifyMediaChange(); |
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108 |
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109 WaitForChangeL(); |
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110 } |
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111 |
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112 void CDriveWatcher::WaitForChangeL() |
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113 { |
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114 TChar drive; |
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115 User::LeaveIfError(iFs.DriveToChar(iDrive, drive)); |
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116 TUint driveChar(drive); // Can't pass TChar to Format(). |
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117 |
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118 TPath notificationPath; |
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119 TPath privatePath; |
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120 _LIT(KNotificationPathFormat,"%c:%S%S"); |
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121 User::LeaveIfError(iFs.PrivatePath(privatePath)); |
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122 |
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123 notificationPath.Format(KNotificationPathFormat, driveChar, &privatePath, &KNotificationDirectory); |
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124 |
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125 iFs.NotifyChange(ENotifyEntry, iStatus, notificationPath); |
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126 |
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127 SetActive(); |
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128 } |
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129 |
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130 } |
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