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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: Generic handler to be used by Observables |
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15 * |
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16 * Copyright © 2007 Nokia. All rights reserved. |
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17 * This material, including documentation and any related computer |
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18 * programs, is protected by copyright controlled by Nokia. All |
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19 * rights are reserved. Copying, including reproducing, storing, |
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20 * adapting or translating, any or all of this material requires the |
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21 * prior written consent of Nokia. This material also contains |
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22 * confidential information which may not be disclosed to others |
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23 * without the prior written consent of Nokia. |
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24 |
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25 * |
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26 * |
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27 */ |
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28 |
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29 |
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30 |
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31 // INCLUDE FILES |
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32 #include "CamObservable.h" |
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33 #include "CamObserver.h" |
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34 #include "CamObserverHandler.h" |
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35 #include "camlogging.h" |
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36 |
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37 // --------------------------------------------------------- |
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38 // CCamObserverHandler::CCamObserverHandler |
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39 // C++ constructor |
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40 // --------------------------------------------------------- |
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41 // |
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42 CCamObserverHandler::CCamObserverHandler() |
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43 { |
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44 } |
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45 |
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46 // --------------------------------------------------------- |
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47 // CCamObserverHandler::~CCamObserverHandler |
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48 // C++ Destructor |
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49 // --------------------------------------------------------- |
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50 // |
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51 CCamObserverHandler::~CCamObserverHandler() |
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52 { |
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53 PRINT( _L("Camera => ~CCamObserverHandler") ); |
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54 iObservers.Reset(); |
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55 PRINT( _L("Camera <= ~CCamObserverHandler") ); |
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56 } |
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57 |
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58 // --------------------------------------------------------- |
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59 // CCamObserverHandler::NewL |
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60 // Symbian 2-phase constructor |
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61 // --------------------------------------------------------- |
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62 // |
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63 CCamObserverHandler* CCamObserverHandler::NewL() |
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64 { |
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65 CCamObserverHandler* self = new( ELeave ) CCamObserverHandler(); |
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66 CleanupStack::PushL( self ); |
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67 self->ConstructL(); |
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68 CleanupStack::Pop( self ); |
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69 return self; |
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70 } |
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71 |
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72 // --------------------------------------------------------- |
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73 // CCamObserverHandler::ConstructL |
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74 // Second phase constructor |
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75 // --------------------------------------------------------- |
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76 // |
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77 void CCamObserverHandler::ConstructL() |
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78 { |
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79 } |
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80 |
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81 // --------------------------------------------------------- |
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82 // CCamObserverHandler::RegisterObserverL |
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83 // Registers observer if not previously registered |
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84 // --------------------------------------------------------- |
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85 // |
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86 void CCamObserverHandler::RegisterObserverL(MCamObserver* aObserver) |
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87 { |
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88 if ( aObserver ) |
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89 { |
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90 if ( KErrNotFound == iObservers.Find( aObserver )) |
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91 { |
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92 User::LeaveIfError(iObservers.Append(aObserver)); |
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93 } |
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94 } |
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95 } |
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96 |
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97 // --------------------------------------------------------- |
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98 // CCamObserverHandler::DeregisterObserver |
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99 // Removes observer |
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100 // --------------------------------------------------------- |
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101 // |
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102 void CCamObserverHandler::DeregisterObserver(MCamObserver* aObserver) |
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103 { |
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104 if ( aObserver ) |
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105 { |
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106 TInt index = iObservers.Find( aObserver ); |
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107 if ( KErrNotFound != index ) |
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108 { |
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109 iObservers.Remove(index); |
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110 } |
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111 } |
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112 } |
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113 |
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114 // --------------------------------------------------------- |
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115 // CCamObserverHandler::BroadcastEvent |
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116 // Broadcasts an event code to all observers |
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117 // --------------------------------------------------------- |
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118 // |
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119 void CCamObserverHandler::BroadcastEvent( TCamObserverEvent aEvent ) |
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120 { |
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121 TInt count = iObservers.Count(); |
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122 TInt i; |
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123 for ( i = 0; i < count; i++ ) |
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124 { |
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125 // Checked to be non-NULL when added to array. |
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126 iObservers[i]->HandleObservedEvent( aEvent ); |
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127 } |
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128 } |
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129 |
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130 // End of File |