1 /* |
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2 * Copyright (c) 2007 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: Command validator callback class definition. |
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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 #ifndef T_VTUICMDVALIDATORCALLBACK_H |
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20 #define T_VTUICMDVALIDATORCALLBACK_H |
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21 |
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22 #include <e32base.h> |
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23 |
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24 /** |
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25 * MVtUiCmdValidatorCallBack |
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26 * |
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27 * Command validator callback API. |
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28 * |
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29 * @since S60 v3.2 |
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30 */ |
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31 class MVtUiCmdValidatorCallBack |
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32 { |
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33 |
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34 public: |
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35 |
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36 /** |
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37 * Invokes callback call. |
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38 */ |
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39 virtual TBool Call( TInt ) const = 0; |
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40 |
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41 }; |
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42 |
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43 /** |
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44 * TVtUiCmdValidatorCallBack |
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45 * |
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46 * Validator callback wrapper to maintain type safety. Also allows use of |
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47 * different types of instances for invocation of callback. |
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48 * |
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49 * @since S60 v3.2 |
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50 */ |
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51 template < class T > |
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52 NONSHARABLE_CLASS( TVtUiCmdValidatorCallBack ) |
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53 : public MVtUiCmdValidatorCallBack |
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54 { |
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55 |
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56 // Callback method type definition |
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57 typedef TBool ( T::*TCallBackMethod )( TInt ) const; |
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58 |
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59 public: |
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60 |
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61 /** |
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62 * Constructor |
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63 * |
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64 * @param aInstance Instance on which callback method will be called. |
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65 * @param aMethod Callback method to be called. |
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66 */ |
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67 TVtUiCmdValidatorCallBack( const T& aInstance, TCallBackMethod aMethod ); |
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68 |
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69 /** |
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70 * Executes callback. |
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71 * |
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72 * @param aParameter Callback parameter, e.g. command Id or resource Id. |
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73 * @return Callback result. |
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74 */ |
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75 TBool Call( TInt aParameter ) const; |
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76 |
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77 private: |
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78 |
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79 // Instance from which callback method will be invoke |
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80 const T* iInstance; |
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81 |
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82 // Callback method pointer |
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83 TCallBackMethod iMethod; |
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84 |
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85 }; |
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86 |
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87 #include "tvtuicmdvalidatorcallback.inl" |
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88 |
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89 #endif // T_VTUICMDVALIDATORCALLBACK_H |
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