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: Publish & Subscribe key observer |
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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 #include "lockapppubsubobserver.h" |
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20 #include "lockapputils.h" |
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21 |
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22 // --------------------------------------------------------------------------- |
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23 // Two-phased constructor. |
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24 // --------------------------------------------------------------------------- |
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25 CLockAppPubSubObserver* CLockAppPubSubObserver::NewL(MLockAppObserverInterface* aObserver, |
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26 TUid aPubSubUid, TUint32 aKeyId ) |
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27 { |
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28 CLockAppPubSubObserver* self = new (ELeave) CLockAppPubSubObserver(aObserver, aPubSubUid, aKeyId); |
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29 CleanupStack::PushL( self ); |
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30 self->ConstructL( ); |
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31 CleanupStack::Pop( self ); |
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32 return self; |
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33 } |
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34 |
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35 // --------------------------------------------------------------------------- |
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36 // C++ default constructor |
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37 // --------------------------------------------------------------------------- |
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38 CLockAppPubSubObserver::CLockAppPubSubObserver(MLockAppObserverInterface* aObserver, |
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39 TUid aPubSubUid, TUint32 aKeyId ) : |
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40 CActive( 0 ), |
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41 iObserver( aObserver ), |
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42 iPubSubUid( aPubSubUid ), |
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43 iKeyId( aKeyId ), |
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44 iValue( NULL ) |
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45 { |
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46 } |
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47 |
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48 // --------------------------------------------------------------------------- |
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49 // Destructor |
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50 // --------------------------------------------------------------------------- |
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51 CLockAppPubSubObserver::~CLockAppPubSubObserver( ) |
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52 { |
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53 Cancel( ); |
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54 iProperty.Close( ); |
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55 } |
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56 |
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57 // --------------------------------------------------------------------------- |
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58 // Symbian OS default constructor |
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59 // --------------------------------------------------------------------------- |
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60 void CLockAppPubSubObserver::ConstructL( ) |
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61 { |
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62 // Add this active object to the scheduler. |
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63 CActiveScheduler::Add( this ); |
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64 TInt err = iProperty.Attach( iPubSubUid, iKeyId ); |
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65 ERROR_2(err, "CLockAppPubSubObserver::ConstructL - Property(%d,%d) attach", iPubSubUid, iKeyId); |
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66 User::LeaveIfError( err ); |
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67 Start( ); |
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68 } |
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69 |
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70 // --------------------------------------------------------------------------- |
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71 // Starts listening |
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72 // --------------------------------------------------------------------------- |
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73 TInt CLockAppPubSubObserver::Start( ) |
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74 { |
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75 if ( !IsActive( ) ) |
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76 { |
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77 iStatus = KRequestPending; |
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78 iProperty.Subscribe( iStatus ); |
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79 SetActive( ); |
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80 return KErrNone; |
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81 } |
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82 else |
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83 { |
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84 return KErrInUse; |
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85 } |
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86 } |
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87 |
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88 // --------------------------------------------------------------------------- |
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89 // Stops listening |
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90 // --------------------------------------------------------------------------- |
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91 void CLockAppPubSubObserver::Stop( ) |
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92 { |
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93 if ( IsActive( ) ) |
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94 { |
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95 Cancel( ); |
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96 iProperty.Cancel( ); |
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97 } |
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98 } |
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99 |
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100 // --------------------------------------------------------------------------- |
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101 // Gets value of the key from P&S. |
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102 // --------------------------------------------------------------------------- |
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103 TInt CLockAppPubSubObserver::GetKeyValue(TInt& aValue ) |
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104 { |
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105 RDebug::Printf( "%s %s (%u) 1=%x", __FILE__, __PRETTY_FUNCTION__, __LINE__, 1 ); |
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106 return iProperty.Get( aValue ); |
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107 } |
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108 |
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109 // --------------------------------------------------------------------------- |
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110 // Sets a value for the key in P&S. |
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111 // --------------------------------------------------------------------------- |
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112 TInt CLockAppPubSubObserver::SetKeyValue(TInt aValue ) |
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113 { |
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114 RDebug::Printf( "%s %s (%u) aValue=%x", __FILE__, __PRETTY_FUNCTION__, __LINE__, aValue ); |
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115 return iProperty.Set( aValue ); |
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116 } |
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117 |
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118 // --------------------------------------------------------------------------- |
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119 // CLockAppPubSubObserver::RunL() |
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120 // --------------------------------------------------------------------------- |
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121 void CLockAppPubSubObserver::RunL( ) |
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122 { |
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123 TInt value( NULL); |
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124 iProperty.Get( value ); |
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125 if ( iValue != value ) |
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126 { |
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127 // on value change |
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128 iValue = value; |
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129 if ( iObserver ) |
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130 { |
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131 iObserver->HandlePubSubNotify( iPubSubUid, iKeyId, iValue ); |
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132 } |
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133 } |
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134 // re-subscribe to events |
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135 Start( ); |
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136 } |
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137 |
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138 // --------------------------------------------------------------------------- |
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139 // Cancels event listening |
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140 // --------------------------------------------------------------------------- |
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141 void CLockAppPubSubObserver::DoCancel( ) |
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142 { |
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143 iProperty.Cancel( ); |
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144 } |
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145 |
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146 // End of file |
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