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1 /* |
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2 * Copyright (c) 2004 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: Declares disk status watcher class for ObexUtils. |
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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 |
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20 #ifndef _OBEXUTILSPROPERTYNOTIFIER_H |
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21 #define _OBEXUTILSPROPERTYNOTIFIER_H |
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22 |
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23 // INCLUDES |
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24 #include <e32base.h> |
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25 #include <e32property.h> |
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26 #include <UikonInternalPSKeys.h> |
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27 |
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28 // CLASS DECLARATION |
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29 |
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30 /** |
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31 Type of memory property check, |
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32 @param ECheckPhoneMemory, phone memory is checked, default value if not mentioned explicitly. |
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33 @param ECheckMMCMemory, MMC memory is checked. |
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34 */ |
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35 |
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36 enum TMemoryPropertyCheckType |
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37 { |
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38 ECheckPhoneMemory, |
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39 ECheckMMCMemory |
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40 }; |
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41 |
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42 /** |
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43 A callback interface for informing content change of disk status. Client must derive |
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44 from this class and implement HandleNotifyL() method. When disk space will cross warning |
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45 level or critical level this method will be call back. |
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46 */ |
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47 |
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48 NONSHARABLE_CLASS( MObexUtilsPropertyNotifyHandler ) |
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49 { |
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50 public: |
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51 /** |
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52 * Callback method for disk status change |
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53 * @param aUid UID identifying a shared data file where notify came from. |
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54 * @param aKey keyword of which value was changed |
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55 */ |
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56 virtual void HandleNotifyL( TMemoryPropertyCheckType aCheckType ) =0; |
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57 }; |
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58 |
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59 NONSHARABLE_CLASS( CObexUtilsPropertyNotifier ) : public CActive |
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60 { |
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61 public: // NewL, Constructors and destructor |
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62 |
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63 /* |
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64 * Two-phased constructor. |
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65 * @param aHandler -Pointer to the MObexUtilsPropertyNotifyHandler derived class |
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66 * @param aCheckType -Constant defining type of memory checking to be done (phone/MMC) |
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67 * @return CObexUtilsPropertyNotifier* -Initialized object. |
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68 */ |
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69 |
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70 IMPORT_C static CObexUtilsPropertyNotifier* NewL( |
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71 MObexUtilsPropertyNotifyHandler* aHandler, |
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72 TMemoryPropertyCheckType aCheckType=ECheckPhoneMemory ); |
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73 |
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74 /** |
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75 * Destructor. |
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76 */ |
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77 |
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78 virtual ~CObexUtilsPropertyNotifier(); |
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79 private: // Functions from base classes |
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80 |
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81 /** |
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82 * Constructor. |
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83 * @param aHandler -Pointer to the MObexUtilsPropertyNotifyHandler derived class |
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84 * @param aCheckType -Constant defining type of memory checking to be done (phone/MMC) |
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85 */ |
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86 |
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87 CObexUtilsPropertyNotifier( |
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88 MObexUtilsPropertyNotifyHandler* aHandler, |
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89 TMemoryPropertyCheckType aCheckType ); |
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90 |
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91 void ConstructL(); |
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92 |
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93 /** |
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94 Subscribes to a property and sets active |
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95 */ |
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96 void Subscribe(); |
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97 |
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98 /** |
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99 * From CActive Gets called when CActive::Cancel is called, |
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100 * cancels disk status watching. |
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101 * |
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102 * @param None. |
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103 * @return None. |
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104 */ |
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105 |
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106 void DoCancel(); |
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107 |
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108 /** |
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109 * From CActive Gets called when content of disk status is changed, |
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110 * calls MObexUtilsPropertyNotifyHandler::HandleNotify. |
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111 * |
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112 * @param None. |
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113 * @return None. |
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114 */ |
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115 |
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116 void RunL(); |
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117 |
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118 private: |
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119 // Reference to observer |
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120 MObexUtilsPropertyNotifyHandler* iHandler; |
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121 // Type of memory check (phone/MMC) |
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122 TMemoryPropertyCheckType iCheckType; |
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123 // Database handle |
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124 RProperty iProperty; |
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125 }; |
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126 |
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127 #endif // _OBEXUTILSPROPERTYNOTIFIER_H |