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: Controls observers and publishes state changes |
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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 __LOCKAPPOBSERVERLIST_H__ |
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20 #define __LOCKAPPOBSERVERLIST_H__ |
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21 |
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22 // INCLUDES |
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23 #include <coecntrl.h> |
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24 #include "lockapp.hrh" |
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25 |
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26 // FORWARD DECLARATIONS |
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27 class MLockAppStateObserver; |
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28 |
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29 /** |
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30 * CLockAppObserverList class publishes lock state changes to all implemented state |
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31 * observers. The list owns all childs and it is responsible for deleting them. |
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32 * |
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33 * @lib lockapp |
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34 * @since 5.0 |
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35 * @author Joona Petrell |
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36 * @author Tamas Koteles |
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37 */ |
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38 class CLockAppObserverList : public CCoeControl |
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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 * C++ default constructor. |
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44 */ |
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45 CLockAppObserverList( ); |
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46 |
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47 /** |
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48 * Destructor. |
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49 */ |
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50 virtual ~CLockAppObserverList( ); |
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51 |
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52 public: |
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53 |
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54 /** |
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55 * Add new state observer. |
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56 * @param aObserver lock state observer |
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57 */ |
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58 void AddObserverL( MLockAppStateObserver* aObserver ); |
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59 |
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60 /** |
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61 * Remove lock state observer. |
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62 * @param aObserver lock state observer |
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63 */ |
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64 void RemoveObserver( MLockAppStateObserver* aObserver ); |
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65 |
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66 protected: |
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67 |
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68 /** |
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69 * Has to be called by the derived class in the construction. |
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70 */ |
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71 void BaseConstructL( ); |
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72 |
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73 /** |
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74 * Informs all observers about the status change. |
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75 * |
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76 * @param aStatusChange the new lock state. |
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77 */ |
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78 void PostStatusChangeL( TLockStatus aStatusChange ); |
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79 |
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80 /** |
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81 * Class that derives from observer list will have first |
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82 * notification about the lock status chane. |
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83 * |
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84 * @param aLockStatus the new lock state. |
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85 */ |
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86 virtual void HandleLockStatusChangedL( TLockStatus aLockStatus ); |
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87 |
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88 private: |
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89 |
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90 /** |
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91 * Dynamic list storing observers. Both the list and observers are owned. |
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92 * Own. |
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93 */ |
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94 RPointerArray<MLockAppStateObserver>* iObserverList; |
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95 |
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96 }; |
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97 |
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98 #endif // __LOCKAPPOBSERVERLIST_H__ |
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99 // End of File |
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