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1 /* |
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2 * Copyright (c) 2006-2009 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: image composer listener for setting pending image objects present |
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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 #ifndef IMAGEPRESENTOBSERVER_H_ |
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20 #define IMAGEPRESENTOBSERVER_H_ |
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21 |
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22 #include "mdeharvestersession.h" |
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23 |
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24 // forward declarations |
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25 class CMdENamespaceDef; |
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26 class CComposerImagePlugin; |
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27 |
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28 /** |
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29 * CImagePresentObserver |
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30 * |
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31 */ |
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32 class CImagePresentObserver : public CActive, public MMdEObjectPresentObserver |
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33 { |
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34 public: |
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35 |
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36 enum TRequest |
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37 { |
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38 ERequestIdle, |
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39 ERequestWaitPendingCount, |
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40 ERequestWaitPending, |
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41 ERequestProcess |
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42 } |
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43 ; |
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44 /** |
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45 * Destructor. |
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46 */ |
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47 ~CImagePresentObserver(); |
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48 |
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49 /** |
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50 * Two-phased constructor. |
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51 */ |
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52 static CImagePresentObserver* NewL( CMdESession* aSession, CComposerImagePlugin* aComposer, |
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53 CMdEHarvesterSession* aMdEHarvesterSession ); |
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54 |
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55 /** |
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56 * Set next request (=state) of this active object. |
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57 * @param aRequest State enumeration. |
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58 */ |
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59 void SetNextRequest( TRequest aRequest ); |
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60 |
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61 /** |
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62 * Standard RunL-method. |
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63 * From CActive. |
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64 */ |
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65 void RunL(); |
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66 |
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67 /** |
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68 * From CActive. |
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69 */ |
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70 void DoCancel(); |
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71 |
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72 /** |
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73 * From CActive. |
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74 * @param aError Leave error code. |
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75 * @return Always KErrNone. |
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76 */ |
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77 TInt RunError( TInt aError ); |
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78 |
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79 |
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80 protected: |
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81 |
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82 /** |
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83 * Called to notify the observer that objects has been set |
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84 * to present or not present state in the metadata engine database. |
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85 * |
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86 * @param aSession session |
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87 * @param aPresent state: ETrue - present or EFales - not present |
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88 * @param aObjectIdArray object IDs which are set to present state |
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89 */ |
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90 void HandleObjectPresentNotification(CMdESession& aSession, |
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91 TBool aPresent, const RArray<TItemId>& aObjectIdArray); |
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92 |
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93 private: |
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94 |
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95 /** |
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96 * Constructor for performing 1st stage construction |
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97 */ |
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98 CImagePresentObserver(); |
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99 |
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100 /** |
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101 * EPOC default constructor for performing 2nd stage construction |
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102 */ |
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103 void ConstructL( CMdESession* aSession, CComposerImagePlugin* aComposer, CMdEHarvesterSession* aMdEHarvesterSession ); |
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104 |
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105 void CleanUp(); |
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106 |
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107 |
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108 |
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109 private: |
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110 |
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111 /** |
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112 * Pointer to default Mde namespace. |
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113 */ |
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114 CMdENamespaceDef* iDefaultNamespace; |
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115 |
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116 /** |
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117 * Pointer to Mde session. |
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118 */ |
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119 CMdESession* iSession; |
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120 |
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121 CMdEHarvesterSession* iMdEHarvesterSession; |
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122 |
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123 /** |
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124 * Pointer to a composer. |
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125 */ |
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126 CComposerImagePlugin* iComposer; |
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127 |
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128 TGetPendingPgckWrapper* iPendingPckWrapper; |
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129 |
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130 RArray<TItemId> iPresentObjectIds; |
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131 RArray<TItemId> iPendingObjectIds; |
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132 RArray<TItemId> iComposeObjectIds; |
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133 |
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134 TRequest iNextRequest; |
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135 |
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136 TInt iPendingCount; |
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137 |
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138 CMdCSerializationBuffer* iPendingBuffer; |
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139 TBool iStarted; |
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140 |
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141 }; |
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142 |
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143 #endif /*IMAGEPRESENTOBSERVER_H_*/ |
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144 |