1 /* |
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2 * Copyright (c) 2002 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: LandmarksUi Content File - |
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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 |
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21 |
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22 |
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23 |
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24 |
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25 // INCLUDE FILES |
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26 #include "CLmkEventListenerSingleton.h" |
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27 #include "CLmkDbEventListener.h" |
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28 #include "LmkConsts.h" |
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29 #include <lmkerrors.h> |
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30 |
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31 #if defined(_DEBUG) |
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32 // CONSTANTS |
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33 /// Unnamed namespace for local definitions |
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34 namespace { |
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35 |
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36 _LIT( KPanicMsg, "CLmkEventListenerSingleton" ); |
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37 |
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38 void Panic( TPanicCode aReason ) |
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39 { |
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40 User::Panic( KPanicMsg, aReason ); |
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41 } |
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42 } // namespace |
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43 #endif |
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44 // ----------------------------------------------------------------------------- |
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45 // CLmkEventListenerSingleton::CLmkEventListenerSingleton |
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46 // C++ constructor can NOT contain any code, that |
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47 // might leave. |
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48 // ----------------------------------------------------------------------------- |
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49 // |
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50 CLmkEventListenerSingleton::CLmkEventListenerSingleton() |
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51 : CCoeStatic( KLmkEventListenerSingletonUid ) |
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52 { |
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53 } |
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54 |
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55 // ----------------------------------------------------------------------------- |
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56 // CLmkEventListenerSingleton::ConstructL |
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57 // Symbian 2nd phase constructor can leave. |
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58 // ----------------------------------------------------------------------------- |
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59 // |
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60 void CLmkEventListenerSingleton::ConstructL() |
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61 { |
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62 __ASSERT_DEBUG( !iEventListener, Panic( KLmkPanicIllegalConstruction ) ); |
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63 iEventListener = CLmkDbEventListener::NewL(); |
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64 } |
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65 |
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66 // ----------------------------------------------------------------------------- |
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67 // CLmkEventListenerSingleton::~CLmkEventListenerSingleton |
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68 // ----------------------------------------------------------------------------- |
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69 // |
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70 CLmkEventListenerSingleton::~CLmkEventListenerSingleton() |
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71 { |
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72 delete iEventListener; |
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73 } |
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74 |
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75 // ----------------------------------------------------------------------------- |
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76 // CLmkEventListenerSingleton::AddObserverL |
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77 // ----------------------------------------------------------------------------- |
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78 // |
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79 void CLmkEventListenerSingleton::AddObserverL( |
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80 MLmkDbObserver& aObserver, |
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81 CPosLandmarkDatabase& aDb ) |
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82 { |
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83 CLmkEventListenerSingleton* singleton = |
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84 static_cast<CLmkEventListenerSingleton*>( |
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85 CCoeEnv::Static( KLmkEventListenerSingletonUid ) ); |
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86 |
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87 if ( !singleton ) |
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88 { |
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89 singleton = new ( ELeave ) CLmkEventListenerSingleton(); |
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90 // CCoeEnv takes the ownership, but we must ensure that |
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91 // construction is complete, otherwise singleton can't be used. |
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92 CleanupStack::PushL( singleton ); |
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93 singleton->ConstructL(); |
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94 CleanupStack::Pop( singleton ); |
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95 } |
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96 |
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97 singleton->iEventListener->AddObserverL( aObserver, aDb ); |
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98 } |
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99 |
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100 // ----------------------------------------------------------------------------- |
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101 // CLmkEventListenerSingleton::RemoveObserver |
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102 // ----------------------------------------------------------------------------- |
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103 // |
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104 void CLmkEventListenerSingleton::RemoveObserver( |
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105 MLmkDbObserver& aObserver ) |
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106 { |
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107 CLmkEventListenerSingleton* singleton = |
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108 static_cast<CLmkEventListenerSingleton*>( |
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109 CCoeEnv::Static( KLmkEventListenerSingletonUid ) ); |
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110 if ( singleton ) |
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111 { |
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112 singleton->iEventListener->RemoveObserver( aObserver ); |
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113 } |
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114 // If singleton does not exist observer removal is unnecessary |
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115 } |
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116 |
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117 // End of File |
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