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1 // Copyright (c) 2008-2009 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 // An Active Object that requests and handles change notification requests from the CenRep |
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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 @file |
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20 @internalAll |
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21 @deprecated |
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22 */ |
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23 |
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24 #include <e32base.h> |
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25 #include <e32debug.h> |
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26 #include "lbshostsettingsnotifier.h" |
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27 #include <lbs/lbshostsettingsclasstypes.h> |
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28 #include "lbshostsettingsconsts.h" |
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29 |
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30 const TUid KInvalidSettingsId = {-1}; |
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31 |
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32 /** |
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33 Create new instance of notifier |
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34 |
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35 @param aStoreId Host settings store ID |
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36 @param aRepository Repository |
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37 @param aObserver Observer that is to receive notifications |
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38 @return New notifier |
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39 */ |
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40 CLbsHostSettingsNotifier* CLbsHostSettingsNotifier::NewL(TLbsHostStoreId aStoreId, CRepository& aRepository, MLbsHostSettingsStoreObserver* aObserver) |
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41 { |
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42 ASSERT(aObserver); |
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43 CLbsHostSettingsNotifier* self = new(ELeave) CLbsHostSettingsNotifier(aStoreId, aRepository, aObserver); |
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44 return self; |
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45 } |
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46 |
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47 /** |
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48 Constructor. Add notifier to the current active scheduler. |
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49 */ |
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50 CLbsHostSettingsNotifier::CLbsHostSettingsNotifier(TLbsHostStoreId aStoreId, CRepository& aRepository, MLbsHostSettingsStoreObserver* aObserver) : |
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51 CActive(EPriorityStandard), iRepository(aRepository), iStoreId(aStoreId), iObserver(aObserver), iSuppressSettingsId(KInvalidSettingsId) |
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52 { |
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53 CActiveScheduler::Add(this); |
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54 } |
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55 |
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56 /** |
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57 Destructor. Cancel notifications. |
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58 */ |
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59 CLbsHostSettingsNotifier::~CLbsHostSettingsNotifier() |
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60 { |
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61 Cancel(); |
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62 } |
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63 |
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64 /** |
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65 Request notification about changes to LBS Host Settings from CenRep |
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66 |
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67 @leave Error code from CenRep |
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68 */ |
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69 void CLbsHostSettingsNotifier::RequestNotificationL() |
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70 { |
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71 // Only one request for notification can be made at a time. |
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72 // Any other requests are ignored. |
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73 if (!IsActive()) |
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74 { |
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75 // We only want one notificaton for each account that is modified, |
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76 // not one for every record (i.e. CenRep key). So request notifications |
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77 // for timestamp records only, since these are updated by every |
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78 // change made via the API. This also conveniently excludes changes |
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79 // to metadata. |
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80 User::LeaveIfError(iRepository.NotifyRequest(static_cast<TUint32>(ETimestamp) << KRecordTypeShift, KRecordTypeMask, iStatus)); |
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81 SetActive(); |
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82 } |
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83 } |
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84 |
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85 /** |
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86 Suppress the next notification for the specified settings ID. |
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87 This method is called when an account has been modified by the |
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88 CLbsHostSettingsStore instance that created this notifier, in order |
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89 to prevent the observer receiving notifications of its own changes. |
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90 |
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91 @param settingsId Settings id to ignore |
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92 */ |
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93 void CLbsHostSettingsNotifier::SuppressNotification(TUid aSettingsId) |
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94 { |
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95 iSuppressSettingsId = aSettingsId; |
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96 } |
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97 |
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98 /** |
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99 Implements CActive. Handle a notification from CenRep. |
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100 */ |
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101 void CLbsHostSettingsNotifier::RunL() |
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102 { |
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103 // A notification has been recieved from the CenRep. |
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104 // The ID of the changed setting is in iStatus. |
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105 TInt status = iStatus.Int(); |
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106 TUid updatedSettingsId = TUid::Uid(status & KSettingIdMask); |
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107 |
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108 // Renew request before invoking callback to avoid missing any changes |
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109 RequestNotificationL(); |
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110 |
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111 // Notify the observer. |
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112 // Ignore repository wide resets (KInvalidNotificationId) and changes |
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113 // made by the same client session. |
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114 if (status != NCentralRepositoryConstants::KInvalidNotificationId) |
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115 { |
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116 ASSERT((status & KRecordTypeMask) == (static_cast<TUint32>(ETimestamp) << KRecordTypeShift)); |
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117 if (updatedSettingsId == iSuppressSettingsId) |
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118 { |
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119 iSuppressSettingsId = KInvalidSettingsId; |
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120 } |
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121 else |
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122 { |
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123 iObserver->LbsHostSettingsUpdated(KErrNone, iStoreId, updatedSettingsId); |
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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 /** |
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129 Implements CActive. Cancel notifications from CenRep. |
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130 */ |
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131 void CLbsHostSettingsNotifier::DoCancel() |
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132 { |
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133 iRepository.NotifyCancelAll(); |
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134 } |
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135 |
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136 /** |
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137 Implements CActive. Handles leave from RunL(). |
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138 */ |
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139 TInt CLbsHostSettingsNotifier::RunError(TInt aError) |
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140 { |
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141 iObserver->LbsHostSettingsUpdated(aError, iStoreId, KNullUid); |
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142 return KErrNone; |
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143 } |