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1 /* |
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2 * Copyright (c) 2008 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: Subscribes properties from P&S |
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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 "mmpropertysubscriber.h" |
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20 |
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21 // ----------------------------------------------------------------------------- |
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22 // ----------------------------------------------------------------------------- |
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23 // |
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24 CMmPropertySubscriber::CMmPropertySubscriber(MMmPropertyChangeObserver& aObserver) |
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25 : CActive( EPriorityStandard ), |
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26 iPropertyChangeObserver(aObserver) |
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27 { |
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28 } |
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29 |
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30 // ----------------------------------------------------------------------------- |
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31 // ----------------------------------------------------------------------------- |
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32 // |
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33 CMmPropertySubscriber* CMmPropertySubscriber::NewLC( |
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34 const TUid aUid, |
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35 const TUint32 aKey, |
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36 MMmPropertyChangeObserver& aObserver) |
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37 { |
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38 CMmPropertySubscriber* self = new ( ELeave ) CMmPropertySubscriber(aObserver); |
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39 CleanupStack::PushL(self); |
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40 self->ConstructL(aUid,aKey); |
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41 return self; |
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42 } |
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43 // ----------------------------------------------------------------------------- |
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44 // ----------------------------------------------------------------------------- |
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45 // |
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46 CMmPropertySubscriber* CMmPropertySubscriber::NewL( |
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47 const TUid aUid, |
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48 const TUint32 aKey, |
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49 MMmPropertyChangeObserver& aObserver) |
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50 { |
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51 CMmPropertySubscriber* self = CMmPropertySubscriber::NewLC(aUid,aKey,aObserver); |
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52 CleanupStack::Pop(); // self; |
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53 return self; |
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54 } |
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55 // ----------------------------------------------------------------------------- |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 void CMmPropertySubscriber::ConstructL( |
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59 const TUid aUid, |
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60 const TUint32 aKey) |
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61 { |
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62 User::LeaveIfError( iProperty.Attach( aUid, aKey ) ); |
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63 CActiveScheduler::Add( this); // Add to scheduler |
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64 // initial subscription and process current property value |
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65 RunL(); |
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66 } |
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67 // ----------------------------------------------------------------------------- |
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68 // ----------------------------------------------------------------------------- |
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69 // |
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70 CMmPropertySubscriber::~CMmPropertySubscriber() |
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71 { |
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72 Cancel(); // Cancel any request, if outstanding |
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73 iProperty.Close(); |
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74 } |
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75 // ----------------------------------------------------------------------------- |
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76 // ----------------------------------------------------------------------------- |
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77 // |
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78 void CMmPropertySubscriber::DoCancel() |
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79 { |
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80 iProperty.Close(); |
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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 void CMmPropertySubscriber::RunL() |
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86 { |
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87 // resubscribe before processing new value to prevent missing updates |
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88 iProperty.Subscribe( iStatus ); |
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89 SetActive(); |
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90 |
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91 TInt intValue; |
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92 if( iProperty.Get( intValue ) != KErrNotFound ) |
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93 { |
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94 iPropertyChangeObserver.PropertyChangedL(intValue); |
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95 } |
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96 } |
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97 |