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1 /* |
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2 * Copyright (c) 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 "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: Used for observing property changes and notifying listeners. |
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15 * |
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16 */ |
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17 |
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18 // CLASS HEADER |
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19 #include "FreestyleEmailUiPropertySubscriber.h" |
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20 |
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21 |
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22 // CONSTRUCTION AND DESTRUCTION |
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23 |
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24 // ----------------------------------------------------------------------------- |
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25 // Private C++ constructor. |
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26 // ----------------------------------------------------------------------------- |
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27 // |
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28 CFreestyleEmailUiPropertySubscriber::CFreestyleEmailUiPropertySubscriber( |
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29 MFreestyleEmailUiPropertyChangedObserver& aObserver ) |
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30 : CActive( EPriorityStandard ), |
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31 iPropertyChangeObserver( aObserver ) |
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32 { |
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33 // No implementation required. |
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34 } |
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35 |
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36 |
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37 // ----------------------------------------------------------------------------- |
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38 // Two-phase constructor. |
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39 // ----------------------------------------------------------------------------- |
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40 // |
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41 CFreestyleEmailUiPropertySubscriber* CFreestyleEmailUiPropertySubscriber::NewLC( |
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42 const TUid aUid, |
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43 const TUint32 aKey, |
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44 MFreestyleEmailUiPropertyChangedObserver& aObserver ) |
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45 { |
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46 CFreestyleEmailUiPropertySubscriber* self = |
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47 new ( ELeave ) CFreestyleEmailUiPropertySubscriber( aObserver ); |
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48 CleanupStack::PushL( self ); |
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49 self->ConstructL( aUid, aKey ); |
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50 return self; |
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51 } |
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52 |
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53 |
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54 // ----------------------------------------------------------------------------- |
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55 // Two-phase constructor. |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 CFreestyleEmailUiPropertySubscriber* CFreestyleEmailUiPropertySubscriber::NewL( |
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59 const TUid aUid, |
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60 const TUint32 aKey, |
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61 MFreestyleEmailUiPropertyChangedObserver& aObserver ) |
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62 { |
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63 CFreestyleEmailUiPropertySubscriber* self = |
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64 CFreestyleEmailUiPropertySubscriber::NewLC( aUid, aKey, aObserver ); |
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65 CleanupStack::Pop( self ); |
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66 return self; |
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67 } |
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68 |
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69 |
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70 // ----------------------------------------------------------------------------- |
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71 // Second phase constructor. |
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72 // ----------------------------------------------------------------------------- |
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73 // |
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74 void CFreestyleEmailUiPropertySubscriber::ConstructL( const TUid aUid, |
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75 const TUint32 aKey ) |
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76 { |
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77 User::LeaveIfError( iProperty.Attach( aUid, aKey ) ); |
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78 CActiveScheduler::Add( this ); // Add to scheduler. |
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79 // The initial subscription and processing of the current property value. |
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80 RunL(); |
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81 } |
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82 |
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83 |
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84 // ----------------------------------------------------------------------------- |
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85 // Destructor. |
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86 // ----------------------------------------------------------------------------- |
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87 // |
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88 CFreestyleEmailUiPropertySubscriber::~CFreestyleEmailUiPropertySubscriber() |
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89 { |
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90 Cancel(); // Cancel any pending request. |
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91 iProperty.Close(); |
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92 } |
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93 |
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94 |
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95 // PRIVATE METHODS FROM CACTIVE |
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96 |
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97 // ----------------------------------------------------------------------------- |
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98 // Handles completion. |
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99 // ----------------------------------------------------------------------------- |
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100 // |
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101 void CFreestyleEmailUiPropertySubscriber::RunL() |
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102 { |
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103 // Resubscribe before processing a new value in order to prevent missing |
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104 // updates. |
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105 iProperty.Subscribe( iStatus ); |
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106 SetActive(); |
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107 |
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108 TInt intValue( 0 ); |
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109 |
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110 if ( iProperty.Get( intValue ) == KErrNone ) |
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111 { |
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112 iPropertyChangeObserver.PropertyChangedL( intValue ); |
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113 } |
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114 } |
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115 |
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116 |
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117 // ----------------------------------------------------------------------------- |
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118 // Cancels the pending requests. |
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119 // ----------------------------------------------------------------------------- |
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120 // |
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121 void CFreestyleEmailUiPropertySubscriber::DoCancel() |
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122 { |
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123 iProperty.Cancel(); |
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124 } |
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125 |
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126 |
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127 // End of file. |