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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: Menu Framewrok ECom observer |
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15 * |
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16 */ |
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17 |
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18 #ifndef C_ECOM_OBSERVER_H |
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19 #define C_ECOM_OBSERVER_H |
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20 |
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21 #include <e32base.h> // For CActive, link against: euser.lib |
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22 #include <e32std.h> // For RTimer, link against: euser.lib |
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23 |
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24 class REComSession; |
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25 |
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26 /** |
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27 * Class defining callback interface. |
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28 */ |
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29 |
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30 /** |
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31 * MHNEcomInstallNotifierCallback is an interface contains function |
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32 * executed when ECom plugin have changed. Interface is used by all |
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33 * ECom observer implementations. |
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34 * |
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35 * @since S60 5.0 |
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36 * @ingroup group_mmextensions |
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37 */ |
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38 class MHNEcomInstallNotifierCallback |
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39 { |
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40 public: |
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41 |
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42 /** |
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43 * Refreshes list of MultimediaMenu plugins implementations. |
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44 */ |
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45 virtual void EcomChangedL() = 0; |
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46 }; |
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47 |
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48 /** |
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49 * Class for observing ECom server |
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50 */ |
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51 |
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52 /** |
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53 * CMMEcomObserver is a class represents ECom plugin. Class is |
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54 * derived by all ECom plugin implemetations. Implementation |
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55 * contains basic functionality related with ECom mechanism and |
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56 * notification handling. |
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57 * |
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58 * @since S60 5.0 |
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59 * @ingroup group_mmextensions |
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60 */ |
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61 NONSHARABLE_CLASS( CMMEcomObserver ) : public CActive |
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62 { |
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63 public: |
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64 /** |
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65 * Cancel and destroy. |
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66 */ |
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67 ~CMMEcomObserver(); |
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68 |
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69 /** |
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70 * Two-phased constructor. |
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71 * @param aCallback Pointer to ECom plugin callback. |
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72 * @return Instance of the CMMEcomObserver class. |
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73 */ |
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74 static CMMEcomObserver* NewL( MHNEcomInstallNotifierCallback* aCallback ); |
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75 |
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76 /** |
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77 * Two-phased constructor. |
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78 * @param aCallback Pointer to ECom plugin callback. |
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79 * @return Instance of the CMMEcomObserver class. |
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80 */ |
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81 static CMMEcomObserver* NewLC( MHNEcomInstallNotifierCallback* aCallback ); |
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82 |
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83 private: |
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84 /** |
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85 * Default C++ constructor. |
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86 */ |
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87 CMMEcomObserver(); |
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88 |
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89 /** |
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90 * Second-phase constructor. |
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91 * @param aCallback Pointer to ECom plugin callback. |
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92 */ |
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93 void ConstructL( MHNEcomInstallNotifierCallback* aCallback ); |
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94 |
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95 private: |
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96 |
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97 /** |
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98 * From CActive. Handles completion. |
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99 */ |
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100 void RunL(); |
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101 |
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102 /** |
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103 * Cancels active object. |
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104 */ |
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105 void DoCancel(); |
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106 |
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107 /** |
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108 * Override to handle leaves from RunL(). Default implementation causes |
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109 * the active scheduler to panic. |
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110 * @param aError Currently error status. |
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111 * @return Error code. |
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112 */ |
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113 TInt RunError( TInt aError ); |
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114 |
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115 private: |
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116 |
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117 /** |
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118 * ECom handler |
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119 * Own. |
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120 */ |
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121 REComSession* iSession; |
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122 |
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123 /** |
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124 * Callback pointer. |
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125 * Not own. |
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126 */ |
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127 MHNEcomInstallNotifierCallback* iCallback; |
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128 |
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129 }; |
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130 |
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131 #endif // C_ECOM_OBSERVER_H |