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1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #ifndef __LOGVIEWWINDOWFETCHER_H__ |
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17 #define __LOGVIEWWINDOWFETCHER_H__ |
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18 |
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19 // System includes |
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20 #include <e32base.h> |
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21 |
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22 // User includes |
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23 #include <logwrap.h> |
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24 #include "LogCliServShared.h" |
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25 #include <logviewchangeobserver.h> |
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26 |
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27 // Classes referenced |
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28 class RLogSession; |
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29 |
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30 |
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31 ///////////////////////////////////////////////////////////////////////////////////////// |
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32 // -----> MLogViewWindowFetcherObserver (header) |
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33 ///////////////////////////////////////////////////////////////////////////////////////// |
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34 class MLogViewWindowFetcherObserver |
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35 /** |
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36 @internalComponent |
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37 */ |
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38 { |
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39 public: |
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40 virtual void HandleFetchedWindowItemL(TInt aItemIndex, CLogEvent* aEvent) = 0; |
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41 }; |
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42 |
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43 |
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44 ///////////////////////////////////////////////////////////////////////////////////////// |
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45 // -----> CLogViewWindowFetcher (header) |
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46 ///////////////////////////////////////////////////////////////////////////////////////// |
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47 NONSHARABLE_CLASS(CLogViewWindowFetcher) : public CActive |
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48 /** |
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49 @internalComponent |
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50 */ |
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51 { |
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52 public: |
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53 CLogViewWindowFetcher(RLogSession& aSession, TLogViewId aViewId, MLogViewWindowFetcherObserver& aObserver, TInt aPriority); |
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54 ~CLogViewWindowFetcher(); |
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55 void ConstructL(); |
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56 |
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57 public: |
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58 |
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59 /** |
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60 * Fetch the specified window. |
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61 */ |
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62 void PrepareToFetchWindowL(const TLogWindowAndCursor& aRequestedWindow); |
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63 |
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64 /** |
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65 * Start the asynchronous fetch |
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66 */ |
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67 void Start(TRequestStatus& aObserver); |
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68 |
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69 /** |
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70 * Cancel any fetch operation but without notifying the observer |
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71 */ |
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72 void SilentCancel(); |
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73 |
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74 /** |
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75 * Access the window & cursor for the requested window |
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76 */ |
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77 inline const TLogWindowAndCursor& RequestedWindow() const; |
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78 |
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79 private: |
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80 void Fetch(const TLogWindow& aWindow); |
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81 void CompleteObserver(TInt aError); |
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82 |
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83 private: // FROM CActive |
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84 void RunL(); |
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85 void DoCancel(); |
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86 TInt RunError(TInt aError); |
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87 |
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88 private: |
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89 RLogSession& iSession; |
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90 const TLogViewId iViewId; |
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91 MLogViewWindowFetcherObserver& iObserver; |
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92 |
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93 private: |
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94 TLogWindowAndCursor iRequestedWindow; |
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95 // |
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96 TRequestStatus* iObserverRequestStatus; |
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97 CBufBase* iBuffer; |
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98 TPtr8 iBufferPointer; |
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99 TPckgBuf<TLogTransferWindow> iFetchWindowData; |
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100 TPckgBuf<TLogClientServerData> iData; |
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101 TLogWindowAndCursor iWindowReq; |
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102 }; |
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103 |
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104 |
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105 ///////////////////////////////////////////////////////////////////////////////////////// |
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106 // -----> CLogViewWindowFetcher (inline) |
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107 ///////////////////////////////////////////////////////////////////////////////////////// |
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108 inline const TLogWindowAndCursor& CLogViewWindowFetcher::RequestedWindow() const |
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109 { |
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110 return iRequestedWindow; |
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111 } |
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112 |
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113 #endif |