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1 /* |
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2 ============================================================================ |
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3 Name : VRUSBStateHanlder.h |
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4 Author : Junhua Xu |
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5 Version : 1.0 |
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6 Copyright : Your copyright notice |
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7 Description : CVRUSBStateHanlder declaration |
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8 ============================================================================ |
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9 */ |
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10 |
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11 #ifndef VRUSBSTATEHANLDER_H |
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12 #define VRUSBSTATEHANLDER_H |
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13 |
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14 #include <e32base.h> // For CActive, link against: euser.lib |
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15 #include <e32std.h> // For RTimer, link against: euser.lib |
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16 #include <e32property.h> |
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17 |
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18 //#include "DummyUSBState.h" // for dummy testing |
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19 |
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20 class MVRUSBStateObserver |
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21 { |
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22 public: |
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23 // Constructors and destructor |
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24 |
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25 virtual TInt HandleUsbPlugInL() = 0; |
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26 virtual TInt HandleUsbPlugOutL() = 0; |
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27 |
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28 }; |
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29 |
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30 class CVRUSBStateHanlder : public CActive |
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31 { |
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32 public: |
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33 // Cancel and destroy |
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34 ~CVRUSBStateHanlder(); |
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35 |
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36 IMPORT_C static CVRUSBStateHanlder* NewL(MVRUSBStateObserver* aObserver); |
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37 |
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38 public: |
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39 |
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40 IMPORT_C static TBool IsUsbActive(); |
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41 |
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42 private: |
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43 // C++ constructor |
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44 CVRUSBStateHanlder(MVRUSBStateObserver* aObserver); |
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45 |
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46 // Second-phase constructor |
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47 void ConstructL(); |
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48 |
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49 private: |
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50 // From CActive |
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51 // Handle completion |
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52 void RunL(); |
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53 |
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54 // How to cancel me |
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55 void DoCancel(); |
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56 |
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57 // Override to handle leaves from RunL(). Default implementation causes |
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58 // the active scheduler to panic. |
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59 TInt RunError(TInt aError); |
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60 |
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61 void StartL(); |
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62 |
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63 private: |
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64 #ifdef DUMMY_USB_TESTING |
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65 RTimer iTimer; // Provides async timing service, for dummy testing |
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66 TInt isUSBActive; |
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67 #else |
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68 RProperty iProperty; |
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69 #endif |
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70 MVRUSBStateObserver* iObserver; |
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71 }; |
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72 |
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73 #endif // VRUSBSTATEHANLDER_H |