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1 // Copyright (c) 2003-2009 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 // |
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15 |
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16 // INCLUDES |
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17 #include "CContactDbEventQueue.h" |
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18 #include <cntdb.h> |
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19 |
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20 CContactDbEventQueue* CContactDbEventQueue::NewL |
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21 (CContactDatabase* aDb, TInt aMaxQueueSize) |
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22 { |
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23 CContactDbEventQueue* self = new(ELeave) CContactDbEventQueue; |
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24 CleanupStack::PushL(self); |
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25 self->ConstructL(aDb,aMaxQueueSize); |
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26 CleanupStack::Pop(self); |
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27 return self; |
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28 } |
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29 |
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30 CContactDbEventQueue::~CContactDbEventQueue() |
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31 { |
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32 CTimer::Cancel(); |
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33 if (iNotifier) |
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34 { |
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35 delete iNotifier; |
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36 } |
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37 } |
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38 |
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39 void CContactDbEventQueue::PopEvent() |
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40 { |
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41 if (!iQueue.IsEmpty()) |
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42 { |
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43 iQueue.PopHead(); |
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44 } |
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45 } |
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46 |
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47 void CContactDbEventQueue::Clear() |
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48 { |
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49 while(!iQueue.IsEmpty()) |
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50 { |
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51 iQueue.PopHead(); |
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52 } |
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53 } |
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54 |
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55 TBool CContactDbEventQueue::ListenForEvent(TTimeIntervalSeconds aTimeOut, TContactDbObserverEvent& aEvent) |
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56 { |
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57 CTimer::Cancel(); |
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58 if (iQueue.IsEmpty()) |
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59 { |
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60 CTimer::After(aTimeOut.Int() * 1000000); |
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61 CActiveScheduler::Start(); |
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62 } |
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63 if (!iQueue.IsEmpty()) |
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64 { |
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65 aEvent = iQueue.Head(); |
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66 iQueue.PopHead(); |
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67 return ETrue; |
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68 } |
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69 else |
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70 { |
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71 return EFalse; |
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72 } |
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73 } |
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74 |
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75 void CContactDbEventQueue::RunL() |
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76 { |
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77 // Timer expired |
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78 CActiveScheduler::Stop(); |
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79 } |
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80 |
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81 void CContactDbEventQueue::HandleDatabaseEventL |
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82 (TContactDbObserverEvent aEvent) |
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83 { |
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84 const TBool KTimerActive = CTimer::IsActive(); |
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85 CTimer::Cancel(); |
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86 TBool eventPushed = iQueue.Push(aEvent); |
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87 __ASSERT_ALWAYS(eventPushed,User::Invariant()); // ensure push was successful |
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88 |
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89 if (KTimerActive) |
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90 { |
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91 CActiveScheduler::Stop(); |
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92 } |
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93 } |
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94 |
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95 CContactDbEventQueue::CContactDbEventQueue() |
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96 : CTimer(CActive::EPriorityStandard) |
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97 { |
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98 } |
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99 |
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100 void CContactDbEventQueue::ConstructL |
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101 (CContactDatabase* aDb, TInt aMaxQueueSize) |
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102 { |
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103 CTimer::ConstructL(); |
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104 iQueue.ConstructL(aMaxQueueSize); |
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105 CActiveScheduler::Add(this); |
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106 |
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107 if (aDb) |
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108 { |
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109 iNotifier = CContactChangeNotifier::NewL(*aDb, this); |
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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 |