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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Implements the CSimPubSub class |
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15 // |
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16 // |
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17 |
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18 #include "CSimPubSub.h" |
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19 #include "Simlog.h" |
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20 |
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21 |
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22 /** |
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23 Standard two phase construction. |
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24 |
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25 @param aPSSimObserver pointer to event observer |
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26 @param aUid uids of Publish&Subscribe uids to subscribe to. |
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27 */ |
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28 CSimPubSub* CSimPubSub::NewL(MPSSimObserver* aPSSimObserver, const CSimPubSub::TPubSubProperty aProperty) |
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29 { |
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30 LOGSCOMMON1(">>CSimPubSub::NewL"); |
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31 CSimPubSub* pubsub=new(ELeave) CSimPubSub(aPSSimObserver,aProperty); |
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32 CleanupStack::PushL(pubsub); |
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33 pubsub->ConstructL(); |
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34 CleanupStack::Pop(); |
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35 LOGSCOMMON1("<<CSimPubSub::NewL"); |
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36 return pubsub; |
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37 } |
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38 |
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39 /** |
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40 Private constructor used in the first phase of construction. |
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41 |
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42 @param aPSSimObserver pointer to event observer |
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43 @param aUid uids of Publish&Subscribe uids to subscribe to. |
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44 */ |
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45 CSimPubSub::CSimPubSub(MPSSimObserver* aPSSimObserver, const CSimPubSub::TPubSubProperty aProperty) |
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46 : CActive(EPriorityStandard), |
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47 iProperty(aProperty), |
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48 iPSSimCallBack(aPSSimObserver) |
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49 { |
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50 } |
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51 |
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52 /** |
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53 2nd phase of construction - subscribe to event. |
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54 */ |
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55 void CSimPubSub::ConstructL() |
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56 { |
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57 User::LeaveIfError(iSubscribe.Attach(iProperty.iCategory,iProperty.iKey)); |
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58 CActiveScheduler::Add(this); |
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59 } |
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60 |
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61 /** |
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62 Destructor. Cancels any outstanding request on P&S. |
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63 */ |
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64 CSimPubSub::~CSimPubSub() |
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65 { |
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66 Cancel(); |
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67 iSubscribe.Close(); |
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68 } |
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69 |
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70 /** |
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71 Start the subscription |
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72 */ |
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73 void CSimPubSub::Start() |
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74 { |
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75 iSubscribe.Subscribe(iStatus); |
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76 SetActive(); |
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77 } |
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78 |
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79 /** |
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80 Handles completion of our P&S request. |
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81 Notifies the event observer. |
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82 */ |
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83 void CSimPubSub::RunL() |
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84 { |
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85 TInt status = iStatus.Int(); |
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86 // As described in documentation resubscribe before processing new value to prevent missing updates. |
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87 if(status != KErrNone) |
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88 User::After(1000000L); //pause before attempting re-subscribe to avoid a tight-loop. |
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89 Start(); |
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90 //pass new state to observer |
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91 if (status==KErrNone) |
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92 { |
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93 TInt state; |
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94 if(iSubscribe.Get(state) == KErrNone) |
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95 { |
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96 iPSSimCallBack->SimPSEvent(iProperty,state); |
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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 /** |
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102 Handles a request to cancel the state machine. |
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103 Cancels any P&S subscriptions. |
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104 */ |
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105 void CSimPubSub::DoCancel() |
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106 { |
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107 iSubscribe.Cancel(); |
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108 } |
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109 |
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110 /** |
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111 Empty constructor |
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112 */ |
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113 CSimPubSub::TPubSubProperty::TPubSubProperty() |
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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 /** |
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119 Overloaded constructor |
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120 */ |
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121 CSimPubSub::TPubSubProperty::TPubSubProperty(TUid aCategory, TInt aKey, TInt aType) |
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122 : iCategory(aCategory), iKey(aKey), iType(aType) |
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123 { |
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124 } |
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125 |
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126 |
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127 /** |
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128 Compare for equality. |
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129 */ |
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130 TBool CSimPubSub::TPubSubProperty::operator==(const CSimPubSub::TPubSubProperty& aProperty) const |
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131 { |
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132 return (iCategory == aProperty.iCategory && iKey == aProperty.iKey && iType == aProperty.iType); |
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133 } |