|
1 /* |
|
2 * Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the License "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 #include "drivewatcher.h" |
|
20 #include "log.h" |
|
21 |
|
22 namespace Swi |
|
23 { |
|
24 // CDriveWatcher |
|
25 _LIT(KNotificationDirectory,"mediachange\\"); |
|
26 |
|
27 /*static*/ CDriveWatcher* CDriveWatcher::NewL(RFs& aFs, TInt aDrive, |
|
28 MDriveObserver& aObserver, |
|
29 TInt aPriority) |
|
30 { |
|
31 CDriveWatcher* self=NewLC(aFs, aDrive, aObserver, aPriority); |
|
32 CleanupStack::Pop(self); |
|
33 return self; |
|
34 } |
|
35 |
|
36 /*static*/ CDriveWatcher* CDriveWatcher::NewLC(RFs& aFs, TInt aDrive, |
|
37 MDriveObserver& aObserver, |
|
38 TInt aPriority) |
|
39 { |
|
40 CDriveWatcher* self=new(ELeave) CDriveWatcher(aFs, aDrive, aObserver, aPriority); |
|
41 CleanupStack::PushL(self); |
|
42 self->ConstructL(); |
|
43 return self; |
|
44 } |
|
45 |
|
46 CDriveWatcher::~CDriveWatcher() |
|
47 { |
|
48 Cancel(); |
|
49 } |
|
50 |
|
51 CDriveWatcher::CDriveWatcher(RFs& aFs, TInt aDrive, MDriveObserver& aObserver, |
|
52 TInt aPriority) |
|
53 : CActive(aPriority), iFs(aFs), iDrive(aDrive), iObserver(aObserver) |
|
54 { |
|
55 CActiveScheduler::Add(this); |
|
56 } |
|
57 |
|
58 void CDriveWatcher::ConstructL() |
|
59 { |
|
60 // Notify observer of media change since we're beginning from an unknown state |
|
61 NotifyMediaChange(); |
|
62 |
|
63 // Start watching for changes |
|
64 WaitForChangeL(); |
|
65 } |
|
66 |
|
67 void CDriveWatcher::DoCancel() |
|
68 { |
|
69 iFs.NotifyChangeCancel(iStatus); |
|
70 } |
|
71 |
|
72 TBool CDriveWatcher::IsMediaPresentL() |
|
73 { |
|
74 TVolumeInfo volumeInfo; |
|
75 TInt err=iFs.Volume(volumeInfo, iDrive); |
|
76 |
|
77 switch (err) |
|
78 { |
|
79 case KErrNotReady: // No Media present |
|
80 { |
|
81 return EFalse; |
|
82 } |
|
83 |
|
84 case KErrNone: // Media Present |
|
85 { |
|
86 return ETrue; |
|
87 } |
|
88 } |
|
89 |
|
90 User::Leave(err); |
|
91 return ETrue; // Will never get here. |
|
92 } |
|
93 |
|
94 void CDriveWatcher::NotifyMediaChange() |
|
95 { |
|
96 // Unsuccessful media change is not fatal, so handle here |
|
97 TRAPD(err,iObserver.MediaChangeL(iDrive, IsMediaPresentL() ? MDriveObserver::EMediaInserted : MDriveObserver::EMediaRemoved)); |
|
98 |
|
99 if (err != KErrNone) |
|
100 { |
|
101 DEBUG_PRINTF2(_L8("SWI Daemon - Media change notification failed with code %d"), err); |
|
102 } |
|
103 } |
|
104 |
|
105 void CDriveWatcher::RunL() |
|
106 { |
|
107 NotifyMediaChange(); |
|
108 |
|
109 WaitForChangeL(); |
|
110 } |
|
111 |
|
112 void CDriveWatcher::WaitForChangeL() |
|
113 { |
|
114 TChar drive; |
|
115 User::LeaveIfError(iFs.DriveToChar(iDrive, drive)); |
|
116 TUint driveChar(drive); // Can't pass TChar to Format(). |
|
117 |
|
118 TPath notificationPath; |
|
119 TPath privatePath; |
|
120 _LIT(KNotificationPathFormat,"%c:%S%S"); |
|
121 User::LeaveIfError(iFs.PrivatePath(privatePath)); |
|
122 |
|
123 notificationPath.Format(KNotificationPathFormat, driveChar, &privatePath, &KNotificationDirectory); |
|
124 |
|
125 iFs.NotifyChange(ENotifyEntry, iStatus, notificationPath); |
|
126 |
|
127 SetActive(); |
|
128 } |
|
129 |
|
130 } |