|
1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // |
|
15 |
|
16 #if !defined(__BABACKUP_H__) |
|
17 #define __BABACKUP_H__ |
|
18 |
|
19 #include <e32std.h> |
|
20 #include <e32base.h> |
|
21 |
|
22 /** |
|
23 Backup server wrapper observer interface. |
|
24 |
|
25 MBackupObserver defines the interface to be implemented by any code that will |
|
26 hold file locks or may attempt to access files regardless of other device state |
|
27 e.g. a phone app may always attempt to access the contacts database for caller id |
|
28 |
|
29 @publishedAll |
|
30 @released |
|
31 */ |
|
32 class MBackupObserver |
|
33 { |
|
34 public: |
|
35 /** Flags indicating how to change a file lock. */ |
|
36 enum TFileLockFlags |
|
37 { |
|
38 /** Owner can reopen/resume writing to the file. */ |
|
39 ETakeLock =0, |
|
40 /** Owner should stop writing to the file. */ |
|
41 EReleaseLockReadOnly =0x01, |
|
42 /** Owner should close the file. */ |
|
43 EReleaseLockNoAccess =0x02, |
|
44 }; |
|
45 public: |
|
46 /** Called by the server to request the file owner to change the lock on the specified |
|
47 file. |
|
48 |
|
49 @param aFileName Filename of affected file |
|
50 @param aFlags Flag indicating how to change the file lock */ |
|
51 virtual void ChangeFileLockL(const TDesC& aFileName,TFileLockFlags aFlags)=0; |
|
52 }; |
|
53 |
|
54 class TBackupOperationAttributes; |
|
55 |
|
56 /** Backup operation observer interface. |
|
57 |
|
58 Programs should implement this interface to receive notifications when a backup |
|
59 or restore operation either starts or ends. |
|
60 |
|
61 @see CBaBackupSessionWrapper::RegisterBackupOperationObserverL() |
|
62 @publishedAll |
|
63 @released |
|
64 */ |
|
65 class MBackupOperationObserver |
|
66 { |
|
67 public: |
|
68 /** Backup operation event types. */ |
|
69 enum TOperationType |
|
70 { |
|
71 /** None. */ |
|
72 ENone =0x00, |
|
73 /** Operation start. */ |
|
74 EStart =0x01, |
|
75 /** Operation end. */ |
|
76 EEnd =0x02, |
|
77 /** Operation aborted. */ |
|
78 EAbort =0x04, |
|
79 }; |
|
80 public: |
|
81 /** Called when a backup or restore operation either starts or ends. |
|
82 |
|
83 @param aBackupOperationAttributes Operation attributes */ |
|
84 virtual void HandleBackupOperationEventL(const TBackupOperationAttributes& aBackupOperationAttributes)=0; |
|
85 private: |
|
86 IMPORT_C virtual void Reserved1(); |
|
87 }; |
|
88 |
|
89 |
|
90 /** |
|
91 Attributes for a backup operation. |
|
92 |
|
93 @see MBackupOperationObserver |
|
94 @publishedAll |
|
95 @released |
|
96 */ |
|
97 class TBackupOperationAttributes |
|
98 { |
|
99 public: |
|
100 inline TBackupOperationAttributes(); |
|
101 inline TBackupOperationAttributes(MBackupObserver::TFileLockFlags aFileFlag, MBackupOperationObserver::TOperationType aOperation); |
|
102 public: |
|
103 /** File locking flags requested by the operation. */ |
|
104 MBackupObserver::TFileLockFlags iFileFlag; |
|
105 /** Operation type. */ |
|
106 MBackupOperationObserver::TOperationType iOperation; |
|
107 }; |
|
108 |
|
109 |
|
110 class RBaBackupSession; |
|
111 class CBaLockChangeNotifier; |
|
112 class CBaBackupOperationNotifier; |
|
113 |
|
114 /** |
|
115 CBaBackupSessionWrapper provides the APIs necessary to enable a backup or restore/install |
|
116 by allowing broadcast requests for some or all files to either remain untouched or have |
|
117 their locks released for an arbitrary period. |
|
118 |
|
119 The class should be used by both code driving a backup/install and any engines that will |
|
120 hold files locks or may access files regardless of the presence of (non-system) client apps |
|
121 |
|
122 @publishedAll |
|
123 @released |
|
124 */ |
|
125 class CBaBackupSessionWrapper : public CBase |
|
126 { |
|
127 public: |
|
128 IMPORT_C static CBaBackupSessionWrapper* NewL(); |
|
129 IMPORT_C ~CBaBackupSessionWrapper(); |
|
130 IMPORT_C void RegisterFileL(const TDesC& aFileName,MBackupObserver& aObserver); |
|
131 IMPORT_C void DeregisterFile(const TDesC& aFileName); |
|
132 IMPORT_C void CloseAll(MBackupObserver::TFileLockFlags aFlags,TRequestStatus& aStatus); |
|
133 IMPORT_C void RestartAll(); |
|
134 IMPORT_C void CloseFileL(const TDesC& aFileName,MBackupObserver::TFileLockFlags aFlags); |
|
135 IMPORT_C void RestartFile(const TDesC& aFileName); |
|
136 IMPORT_C void RegisterBackupOperationObserverL(MBackupOperationObserver& aBackupOperationObserver); |
|
137 IMPORT_C void DeRegisterBackupOperationObserver(MBackupOperationObserver& aBackupOperationObserver); |
|
138 IMPORT_C TBool IsBackupOperationRunning() const; |
|
139 IMPORT_C void NotifyBackupOperationL(const TBackupOperationAttributes& aBackupOperationAttributes); |
|
140 private: |
|
141 CBaBackupSessionWrapper(); |
|
142 void ConstructL(); |
|
143 private: |
|
144 RBaBackupSession* iBackupSession; |
|
145 CBaLockChangeNotifier* iLockChangeNotifier; |
|
146 TAny* iReserved; // needed to preserve BC |
|
147 CBaBackupOperationNotifier* iBackupOperationNotifier; |
|
148 }; |
|
149 |
|
150 |
|
151 // |
|
152 // TBackupOperationAttributes |
|
153 // |
|
154 |
|
155 inline TBackupOperationAttributes::TBackupOperationAttributes() |
|
156 : iFileFlag(MBackupObserver::ETakeLock), iOperation(MBackupOperationObserver::ENone) |
|
157 /** Default constructor. */ |
|
158 { |
|
159 } |
|
160 |
|
161 inline TBackupOperationAttributes::TBackupOperationAttributes(MBackupObserver::TFileLockFlags aFileFlag, MBackupOperationObserver::TOperationType aOperation) |
|
162 : iFileFlag(aFileFlag), iOperation(aOperation) |
|
163 /** Constructor that specifies operation attributes. |
|
164 |
|
165 @param aFileFlag File locking flags requested by the operation |
|
166 @param aOperation Operation type */ |
|
167 { |
|
168 } |
|
169 |
|
170 |
|
171 |
|
172 #endif |
|
173 |