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1 /* |
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2 * Copyright (c) 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 "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: Contains logic for watching certain disk's space |
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15 * |
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16 */ |
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17 |
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18 #ifndef CIRDISKSPACEOBSERVER_H |
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19 #define CIRDISKSPACEOBSERVER_H |
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20 |
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21 #include <e32base.h> // CActive |
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22 #include <f32file.h> // RFs |
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23 |
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24 class MIRDiskSpaceObserverInterface; |
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25 |
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26 /** |
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27 * Defines disk space observer. |
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28 * |
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29 * Observers defined disk and notifies observer if disk space drops below |
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30 * certain level. |
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31 */ |
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32 class CIRDiskSpaceObserver : public CActive |
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33 { |
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34 |
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35 public: |
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36 |
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37 /** |
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38 * Static constructor |
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39 * |
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40 * @param aObserver Observer who is interested if disk |
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41 * space drops below certain level. |
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42 */ |
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43 static CIRDiskSpaceObserver* NewL(MIRDiskSpaceObserverInterface* aObserver); |
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44 |
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45 /** |
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46 * Destructor |
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47 */ |
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48 ~CIRDiskSpaceObserver(); |
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49 |
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50 /** |
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51 * Start Monitoring |
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52 */ |
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53 void Start(const TInt64 aCriticalLevel); |
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54 |
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55 /** |
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56 * Tells observed critical level. |
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57 * |
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58 * @return critical level which is been observed by this session. |
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59 */ |
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60 TInt64 CriticalLevel() const; |
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61 |
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62 /** |
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63 * Returns whether or disk defined by parameter |
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64 * contains less than the critical level free disk space. |
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65 */ |
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66 TBool IsBelowCriticalLevel(const TInt64 aCriticalLevel) const; |
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67 |
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68 protected: |
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69 /** |
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70 * From CActive |
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71 */ |
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72 void DoCancel(); |
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73 void RunL(); |
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74 |
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75 private: |
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76 |
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77 /** |
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78 * C++ constructor. |
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79 */ |
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80 CIRDiskSpaceObserver(MIRDiskSpaceObserverInterface* aObserver); |
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81 |
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82 /** |
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83 * Second phase constructor |
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84 */ |
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85 void ConstructL(); |
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86 |
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87 void Run(); |
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88 |
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89 private: |
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90 |
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91 /** |
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92 * The observer to be notified when critical disk space limit is reached. |
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93 */ |
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94 MIRDiskSpaceObserverInterface* iObserver; |
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95 |
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96 /** |
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97 * Critical disk space level. |
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98 */ |
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99 TInt64 iCriticalLevel; |
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100 |
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101 /** |
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102 * Handle to the file system. |
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103 */ |
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104 RFs iFs; |
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105 }; |
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106 |
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107 #endif // CIRDISKSPACEOBSERVER_H |