|
1 /* |
|
2 * Copyright (c) 2006-2007 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 "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: A long task wrapper for load file |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 |
|
20 #ifndef CNOTEPADLOADFILEAO_H |
|
21 #define CNOTEPADLOADFILEAO_H |
|
22 |
|
23 |
|
24 // INCLUDES |
|
25 #include <e32base.h> |
|
26 #include <txtetext.h> |
|
27 #include <f32file.h> |
|
28 #include "MNpdLoadFileObserver.h" |
|
29 |
|
30 // FORWARD DECLARATIONS |
|
31 class CCoeEnv; |
|
32 class RFile; |
|
33 class CPlainText; |
|
34 class RFileReadStream; |
|
35 |
|
36 // CONSTANTS |
|
37 // the completed code for load file in one step |
|
38 static const TInt KErrStep = 10000; |
|
39 |
|
40 // CLASS DECLARATION |
|
41 /** |
|
42 * The class implements a long task wrapper for load file |
|
43 * |
|
44 * @lib NpdLib.lib |
|
45 * @since 5.2 |
|
46 */ |
|
47 NONSHARABLE_CLASS(CNotepadLoadFileAO) : public CActive |
|
48 { |
|
49 public: |
|
50 static CNotepadLoadFileAO* NewL( MNotepadLoadFileObserver* aObserver, |
|
51 CCoeEnv& aCoeEnv, |
|
52 RFile& aFile, |
|
53 TBool aGuessEncoding, |
|
54 TUint aEncoding, |
|
55 CPlainText& aText ); |
|
56 |
|
57 ~CNotepadLoadFileAO(); |
|
58 |
|
59 public: // New functions |
|
60 |
|
61 /** |
|
62 * Starts load file . |
|
63 * @return start load file successful or not, KErrNone is sucessed, other failed |
|
64 * @since 5.2 |
|
65 */ |
|
66 TInt StartLoadFile( ); |
|
67 |
|
68 /** |
|
69 * Cancels load file . |
|
70 * @since 5.2 |
|
71 */ |
|
72 void CancelLoadFile(); |
|
73 |
|
74 |
|
75 |
|
76 private: // From CActive |
|
77 void RunL(); |
|
78 |
|
79 void DoCancel(); |
|
80 |
|
81 private: |
|
82 CNotepadLoadFileAO( MNotepadLoadFileObserver* aObserver, |
|
83 CCoeEnv& aCoeEnv, |
|
84 RFile& aFile, |
|
85 TBool aGuessEncoding, |
|
86 TUint aEncoding, |
|
87 CPlainText& aText ); |
|
88 |
|
89 void ConstructL(); |
|
90 |
|
91 /** |
|
92 * Initialize import export param for CPlianText. |
|
93 * @since 5.2 |
|
94 */ |
|
95 void InitImportExportParamL(); |
|
96 |
|
97 |
|
98 /** |
|
99 * Run step for load file. |
|
100 * @since 5.2 |
|
101 */ |
|
102 void DoStepL(); |
|
103 |
|
104 |
|
105 private: // Data |
|
106 |
|
107 // Ref: Pointer to thread function observer |
|
108 MNotepadLoadFileObserver* iObserver; |
|
109 |
|
110 // Ref: refrence to Control environment |
|
111 CCoeEnv& iCoeEnv; |
|
112 |
|
113 // Own: the file object to load |
|
114 RFile iFile; |
|
115 |
|
116 // indicate guess encoding or not |
|
117 TBool iGuessEncoding; |
|
118 |
|
119 // aEncoding encoding of the File |
|
120 TUint iEncoding; |
|
121 |
|
122 // Ref: refrence to CPlainText object |
|
123 CPlainText& iText; |
|
124 |
|
125 // the size of the file to load |
|
126 TInt iFileSize; |
|
127 |
|
128 // the current pos of the file |
|
129 TInt iReadPos; |
|
130 |
|
131 // indicate cancel load file or not |
|
132 TBool iCancel; |
|
133 |
|
134 // Own: the import export param for CPlianText |
|
135 CPlainText::TImportExportParam iParam; |
|
136 |
|
137 }; |
|
138 |
|
139 #endif // CNOTEPADLOADFILEAO_H |
|
140 |
|
141 // End of File |