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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: Callback wrapper for Publish and Subscribe* |
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15 */ |
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16 |
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17 |
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18 // INCLUDE FILES |
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19 |
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20 #include <e32svr.h> |
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21 #include <f32file.h> |
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22 #include "CamPropertyWatcher.h" |
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23 #include "CamPropertyObserver.h" |
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24 #include "CamUtility.h" |
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25 |
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26 // ========================= MEMBER FUNCTIONS ================================ |
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27 |
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28 // ----------------------------------------------------------------------------- |
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29 // CCamPropertyWatcher::NewL |
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30 // Two phase construction |
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31 // ----------------------------------------------------------------------------- |
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32 // |
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33 CCamPropertyWatcher* CCamPropertyWatcher::NewL( MPropertyObserver& aPropertyObserver, |
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34 const TUid& aCategory, |
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35 const TUint aKey ) |
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36 { |
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37 CCamPropertyWatcher* self = new(ELeave) CCamPropertyWatcher( aPropertyObserver, |
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38 aCategory, |
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39 aKey ); |
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40 CleanupStack::PushL( self ); |
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41 self->ConstructL(); |
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42 CleanupStack::Pop( self ); |
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43 return self; |
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44 } |
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45 |
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46 // ----------------------------------------------------------------------------- |
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47 // CCamPropertyWatcher::Destructor |
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48 // ----------------------------------------------------------------------------- |
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49 // |
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50 CCamPropertyWatcher::~CCamPropertyWatcher() |
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51 { |
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52 PRINT( _L("Camera => ~CCamPropertyWatcher") ); |
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53 Cancel(); |
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54 iProperty.Close(); |
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55 PRINT( _L("Camera <= ~CCamPropertyWatcher") ); |
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56 } |
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57 |
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58 // ----------------------------------------------------------------------------- |
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59 // CCamPropertyWatcher::Subscribe |
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60 // Request notification of change events |
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61 // ----------------------------------------------------------------------------- |
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62 // |
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63 void CCamPropertyWatcher::Subscribe() |
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64 { |
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65 PRINT( _L( "Camera => CCamPropertyWatcher::Subscribe()" ) ) |
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66 if(!IsActive()) |
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67 { |
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68 iProperty.Subscribe( iStatus ); |
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69 SetActive(); |
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70 } |
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71 PRINT( _L( "Camera <= CCamPropertyWatcher::Subscribe()" ) ) |
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72 } |
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73 |
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74 // ----------------------------------------------------------------------------- |
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75 // CCamPropertyWatcher::Get |
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76 // Return the current value |
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77 // ----------------------------------------------------------------------------- |
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78 // |
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79 TInt CCamPropertyWatcher::Get( TInt& aValue ) |
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80 { |
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81 return iProperty.Get( aValue ); |
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82 } |
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83 |
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84 // ----------------------------------------------------------------------------- |
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85 // CCamPropertyWatcher::CCamPropertyWatcher |
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86 // Constructor |
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87 // ----------------------------------------------------------------------------- |
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88 // |
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89 CCamPropertyWatcher::CCamPropertyWatcher( MPropertyObserver& aPropertyObserver, |
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90 const TUid& aCategory, |
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91 const TUint aKey ) : |
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92 CActive( EPriorityStandard ), |
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93 iPropertyObserver( aPropertyObserver ), |
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94 iCategory( aCategory), |
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95 iKey( aKey ) |
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96 { |
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97 } |
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98 |
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99 // ----------------------------------------------------------------------------- |
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100 // CCamPropertyWatcher::ConstructL |
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101 // Second phase construction |
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102 // ----------------------------------------------------------------------------- |
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103 // |
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104 void CCamPropertyWatcher::ConstructL() |
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105 { |
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106 CActiveScheduler::Add( this ); |
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107 User::LeaveIfError( iProperty.Attach( iCategory, iKey ) ); |
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108 } |
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109 |
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110 // ----------------------------------------------------------------------------- |
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111 // CCamPropertyWatcher::RunL |
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112 // Handle notification of value change |
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113 // ----------------------------------------------------------------------------- |
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114 // |
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115 void CCamPropertyWatcher::RunL() |
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116 { |
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117 PRINT( _L( "Camera => CCamPropertyWatcher::RunL()" ) ) |
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118 const TInt error ( iStatus.Int() ); |
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119 PRINT1( _L( "Camera CCamPropertyWatcher::RunL() status = %d" ), error ) |
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120 Subscribe(); |
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121 if ( error == KErrNone ) |
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122 { |
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123 PRINT( _L( "Camera CCamPropertyWatcher::RunL() calling HandlePropertyChangedL" ) ) |
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124 iPropertyObserver.HandlePropertyChangedL( iCategory, iKey ); |
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125 } |
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126 } |
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127 |
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128 // ----------------------------------------------------------------------------- |
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129 // CCamPropertyWatcher::DoCancel |
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130 // Handle cancellation |
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131 // ----------------------------------------------------------------------------- |
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132 // |
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133 void CCamPropertyWatcher::DoCancel() |
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134 { |
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135 iProperty.Cancel(); |
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136 } |
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137 |
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138 // End of File |