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1 /* |
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2 * Copyright (c) 2007-2009 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 the License "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: |
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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 /** |
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20 @file |
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21 @internalComponent |
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22 @released |
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23 */ |
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24 |
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25 #ifndef PLUGINMANAGER_H |
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26 #define PLUGINMANAGER_H |
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27 |
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28 namespace UserPromptService |
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29 { |
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30 class CPolicyEvaluator; |
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31 class CDialogCreator; |
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32 class CPolicyEvaluatorPlugin; |
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33 class CDialogCreatorPlugin; |
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34 class CPluginManager; |
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35 |
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36 /** |
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37 Container class for a plug-in that notifies a manager object when |
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38 it is destroyed. |
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39 */ |
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40 template <class T> |
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41 class CPlugin : public CBase |
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42 { |
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43 public: |
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44 CPlugin(CPluginManager* aManager, T* aImp); |
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45 T& Imp(); |
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46 ~CPlugin(); |
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47 private: |
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48 CPluginManager* iManager; ///< The plug-in manager that tracks active plug-ins. |
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49 T* iImp; ///< The policy evaluator or dialog creator owned by this object. |
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50 }; |
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51 |
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52 /** |
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53 Plug-in manager that tracks the number of plug-ins enabling REComSession::FinalClose() |
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54 to be deferred (after calling Unload) once all the plug-ins have been unloaded. |
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55 |
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56 N.B. REComSession::FinalClose CANNOT be called from within an ECOM plug-in. |
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57 */ |
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58 NONSHARABLE_CLASS(CPluginManager) : public CBase |
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59 { |
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60 template <class T> friend class CPlugin; |
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61 public: |
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62 IMPORT_C static CPluginManager* NewL(); |
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63 IMPORT_C CPlugin<CPolicyEvaluator>* CreateEvaluatorL(const TUid& aEvaluatorId); |
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64 IMPORT_C CPlugin<CDialogCreator>* CreateDialogCreatorL(const TUid& aDialogCreatorId); |
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65 IMPORT_C void Unload(); |
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66 |
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67 ~CPluginManager(); |
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68 public: |
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69 // For testing. Do not modify directly |
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70 TInt iPluginCount; ///< The number of active CPlugin objects. (do not modify) |
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71 private: |
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72 CPluginManager(); |
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73 IMPORT_C void ReleasePlugin(); |
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74 |
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75 TBool iUnload; ///< Indicates that a deferred call to REComSession::FinalClose is required |
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76 }; |
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77 |
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78 template <class T> |
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79 inline CPlugin<T>::CPlugin(CPluginManager* aManager, T* aImp) : iManager(aManager), iImp(aImp) |
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80 /** |
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81 Constructor |
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82 @param aManager The plug-in manager that tracks the number of plug-ins in existance. |
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83 @param aImp The ECOM implementation that this class managers. |
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84 */ |
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85 { |
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86 } |
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87 |
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88 template <class T> |
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89 inline T& CPlugin<T>::Imp() |
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90 /** |
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91 Gets a reference to the plug-in implementation |
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92 @return The plug-in implementation. |
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93 */ |
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94 { |
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95 return *iImp; |
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96 } |
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97 |
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98 template <class T> |
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99 inline CPlugin<T>::~CPlugin() |
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100 /** |
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101 Destructor |
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102 */ |
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103 { |
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104 delete iImp; |
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105 iManager->ReleasePlugin(); |
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106 } |
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107 } |
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108 #endif // PLUGINMANAGER_H |