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1 // Copyright (c) 2004-2009 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 the License "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 // Component test of Publish and Subscribe |
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15 // |
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16 // |
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17 |
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18 /** |
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19 @file |
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20 @internalTechnology |
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21 */ |
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22 |
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23 #ifndef __CPROPERTYWATCH_H__ |
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24 #define __CPROPERTYWATCH_H__ |
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25 |
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26 #include <e32base.h> |
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27 #include <e32property.h> |
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28 #include "usbmsshared.h" |
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29 |
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30 class CPropertyHandler; |
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31 class CStateMachine; |
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32 |
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33 enum |
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34 { |
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35 EUsbMsState_Read = EUsbMsDriveState_Error + 100, |
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36 EUsbMsState_Written |
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37 }; |
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38 |
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39 /** |
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40 An active object that subscribes to a specified Mass Storage property and |
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41 calls a provided handler each time the property is published. |
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42 */ |
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43 class CPropertyWatch : public CActive |
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44 { |
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45 public: |
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46 static CPropertyWatch* NewLC(TUsbMsDriveState_Subkey aSubkey, CPropertyHandler& aHandler); |
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47 |
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48 private: |
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49 CPropertyWatch(CPropertyHandler& aHandler); |
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50 void ConstructL(TUsbMsDriveState_Subkey aSubkey); |
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51 ~CPropertyWatch(); |
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52 void RunL(); |
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53 void DoCancel(); |
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54 |
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55 RProperty iProperty; |
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56 CPropertyHandler& iHandler; |
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57 }; |
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58 |
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59 /** |
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60 A property handler class that handles the change of ms drive status |
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61 */ |
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62 class CPropertyHandler : public CBase |
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63 { |
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64 public: |
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65 virtual void HandleStatusChange(RProperty& aProperty) = 0; |
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66 |
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67 protected: |
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68 CPropertyHandler(TInt aDriveNo, CStateMachine& aSm); |
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69 virtual ~CPropertyHandler(); |
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70 |
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71 protected: |
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72 TInt iDriveNo; |
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73 CStateMachine& iStateMachine; |
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74 }; |
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75 |
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76 class CMsDriveStatusHandler : public CPropertyHandler |
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77 { |
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78 public: |
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79 static CMsDriveStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm); |
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80 void HandleStatusChange(RProperty& aProperty); |
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81 |
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82 protected: |
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83 CMsDriveStatusHandler(TInt aDriveNo, CStateMachine& aSm); |
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84 }; |
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85 |
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86 class CMsReadStatusHandler : public CPropertyHandler |
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87 { |
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88 public: |
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89 static CMsReadStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm); |
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90 void HandleStatusChange(RProperty& aProperty); |
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91 |
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92 private: |
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93 CMsReadStatusHandler(TInt aDriveNo, CStateMachine& aSm); |
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94 }; |
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95 |
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96 class CMsWrittenStatusHandler : public CPropertyHandler |
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97 { |
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98 public: |
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99 static CMsWrittenStatusHandler* NewLC(TInt aDriveNo, CStateMachine& aSm); |
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100 void HandleStatusChange(RProperty& aProperty); |
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101 |
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102 private: |
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103 CMsWrittenStatusHandler(TInt aDriveNo, CStateMachine& aSm); |
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104 }; |
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105 |
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106 #endif // __CPROPERTYWATCH_H__ |
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107 |