1 /* |
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2 * Copyright (c) 2004-2005 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: Implementation of CLandmarksCategoriesEngine |
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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 #include <EPos_CPosLandmarkDatabase.h> |
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21 #include <EPos_CPosLmCatNameCriteria.h> |
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22 #include <EPos_CPosLandmarkSearch.h> |
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23 #include <EPos_CPosLmCategoryManager.h> |
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24 |
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25 #include "LandmarksCategoriesEngine.h" |
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26 #include "LandmarksLmOpWrapper.h" |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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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 CLandmarksCategoriesEngine::CLandmarksCategoriesEngine( |
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34 CPosLandmarkDatabase& aDb) |
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35 : CLandmarksEngineBase(aDb) |
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36 { |
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37 } |
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38 |
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39 // ----------------------------------------------------------------------------- |
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40 // ----------------------------------------------------------------------------- |
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41 // |
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42 void CLandmarksCategoriesEngine::ConstructL() |
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43 { |
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44 CLandmarksEngineBase::ConstructL(); |
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45 iCatManager = CPosLmCategoryManager::NewL(iDb); |
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46 } |
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47 |
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48 // ----------------------------------------------------------------------------- |
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49 // ----------------------------------------------------------------------------- |
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50 // |
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51 CLandmarksCategoriesEngine* CLandmarksCategoriesEngine::NewL( |
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52 CPosLandmarkDatabase& aDb) |
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53 { |
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54 CLandmarksCategoriesEngine* self = |
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55 new (ELeave) CLandmarksCategoriesEngine(aDb); |
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56 CleanupStack::PushL(self); |
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57 self->ConstructL(); |
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58 CleanupStack::Pop(self); |
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59 return self; |
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60 } |
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61 |
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62 // ----------------------------------------------------------------------------- |
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63 // ----------------------------------------------------------------------------- |
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64 // |
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65 CLandmarksCategoriesEngine::~CLandmarksCategoriesEngine() |
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66 { |
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67 Cancel(); |
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68 delete iCatManager; |
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69 iSubSetOfIds.Close(); |
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70 iItemIds.Close(); |
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71 } |
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72 |
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73 // ----------------------------------------------------------------------------- |
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74 // ----------------------------------------------------------------------------- |
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75 // |
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76 void CLandmarksCategoriesEngine::AddCategoryL(CPosLandmarkCategory& aCategory) |
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77 { |
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78 iCatManager->AddCategoryL(aCategory); |
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79 } |
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80 |
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81 // ----------------------------------------------------------------------------- |
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82 // ----------------------------------------------------------------------------- |
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83 // |
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84 void CLandmarksCategoriesEngine::UpdateCategoryL(const CPosLandmarkCategory& aCategory) |
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85 { |
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86 iCatManager->UpdateCategoryL(aCategory); |
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87 } |
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88 |
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89 // ----------------------------------------------------------------------------- |
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90 // ----------------------------------------------------------------------------- |
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91 // |
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92 void CLandmarksCategoriesEngine::DeleteCategoryL(TPosLmItemId aItemId) |
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93 { |
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94 ExecuteAndDeleteLD(iCatManager->RemoveCategoryL(aItemId)); |
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95 } |
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96 |
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97 // ----------------------------------------------------------------------------- |
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98 // ----------------------------------------------------------------------------- |
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99 // |
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100 CPosLandmarkCategory* CLandmarksCategoriesEngine::CategoryLC(TPosLmItemId aItemId) |
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101 { |
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102 return iCatManager->ReadCategoryLC(aItemId); |
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103 } |
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104 |
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105 // ----------------------------------------------------------------------------- |
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106 // ----------------------------------------------------------------------------- |
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107 // |
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108 void CLandmarksCategoriesEngine::StartSearchingCategoriesL( |
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109 MLandmarksOperationObserver* aObserver) |
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110 { |
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111 // We need to cancel if we are searching/reading categories. |
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112 Cancel(); |
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113 |
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114 iObserver = aObserver; |
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115 iSearchResultExists = EFalse; |
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116 iFilterSearch = EFalse; |
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117 |
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118 // Complete ourselves and start search for all categories in db in RunL(). |
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119 iStatus = KRequestPending; |
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120 SetPriorityAndSetActive(); |
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121 iActiveOperation = ECategorySearch; |
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122 TRequestStatus* status = &iStatus; |
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123 User::RequestComplete(status, KErrNone); |
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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 void CLandmarksCategoriesEngine::StartSearchingCategoriesL( |
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130 const TDesC& aSearchPattern, |
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131 TBool aSearchOnlyInPreviousMatches, |
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132 MLandmarksOperationObserver* aObserver) |
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133 { |
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134 // We need to cancel if we are searching/reading categories. |
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135 Cancel(); |
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136 |
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137 if (!iSearchResultExists) |
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138 { |
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139 // There are no previous results or previous search did not complete. |
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140 // We cannot use the result from it. |
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141 aSearchOnlyInPreviousMatches = EFalse; |
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142 } |
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143 iSearchResultExists = EFalse; |
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144 iFilterSearch = ETrue; |
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145 |
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146 // Set search criteria |
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147 CPosLmCatNameCriteria* criteria = CPosLmCatNameCriteria::NewLC(); |
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148 criteria->SetSearchPatternL(aSearchPattern); |
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149 |
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150 // Create search operation |
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151 CPosLmOperation* operation = iSearcher->StartCategorySearchL( |
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152 *criteria, |
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153 CPosLmCategoryManager::ECategorySortOrderNameAscending, |
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154 aSearchOnlyInPreviousMatches); |
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155 CleanupStack::PopAndDestroy(criteria); |
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156 |
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157 // Start search operation |
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158 iObserver = aObserver; |
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159 iStatus = KRequestPending; |
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160 iLmOpWrapper->StartOperation(operation, iStatus); |
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161 SetPriorityAndSetActive(); |
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162 iActiveOperation = ECategorySearch; |
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163 } |
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164 |
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165 // ----------------------------------------------------------------------------- |
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166 // ----------------------------------------------------------------------------- |
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167 // |
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168 RArray<TPosLmItemId>* CLandmarksCategoriesEngine::FetchSearchResult() |
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169 { |
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170 return &iItemIds; |
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171 } |
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172 |
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173 // ----------------------------------------------------------------------------- |
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174 // ----------------------------------------------------------------------------- |
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175 // |
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176 void CLandmarksCategoriesEngine::StartReadingCategoriesL( |
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177 TInt aNrOfItemsToReadPerBundle, |
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178 MLandmarksOperationObserver* aObserver) |
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179 { |
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180 // We need to cancel if we are searching/reading landmarks. |
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181 Cancel(); |
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182 |
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183 iNrOfItemsToRead = aNrOfItemsToReadPerBundle; |
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184 iObserver = aObserver; |
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185 iCurrentItemId = 0; |
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186 |
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187 // Start reading a bundle of categories |
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188 ReadSomeCategoriesL(); |
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189 iActiveOperation = ECategoryRead; |
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190 } |
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191 |
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192 // ----------------------------------------------------------------------------- |
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193 // ----------------------------------------------------------------------------- |
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194 // |
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195 CArrayPtr<CPosLandmarkCategory>* CLandmarksCategoriesEngine::FetchCategoriesLC() |
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196 { |
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197 TInt nrOfItems = iSubSetOfIds.Count(); |
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198 CArrayPtr<CPosLandmarkCategory>* categories = |
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199 new (ELeave) CArrayPtrFlat<CPosLandmarkCategory>(nrOfItems); |
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200 CleanupStack::PushL(categories); |
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201 |
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202 // Start the actual read of landmarks. This is done synchronously since |
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203 // there is no asynchronous read method as there is for landmarks: |
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204 // (Compare TakePreparedPartialLandmarksL()) |
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205 for (TInt i = 0; i < nrOfItems; i++) |
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206 { |
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207 CPosLandmarkCategory* category = |
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208 iCatManager->ReadCategoryLC(iSubSetOfIds[i]); |
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209 categories->AppendL(category); |
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210 CleanupStack::Pop(category); |
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211 } |
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212 |
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213 return categories; |
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214 } |
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215 |
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216 // ----------------------------------------------------------------------------- |
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217 // ----------------------------------------------------------------------------- |
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218 // |
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219 CArrayPtr<CPosLandmarkCategory>* CLandmarksCategoriesEngine::CategoriesL() |
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220 { |
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221 const TInt KGranularity = 8; |
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222 CArrayPtrFlat<CPosLandmarkCategory>* categories = |
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223 new (ELeave) CArrayPtrFlat<CPosLandmarkCategory>(KGranularity); |
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224 CleanupStack::PushL(categories); |
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225 |
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226 // Get an iterator for all existing categories sorted ascending by name |
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227 CPosLmItemIterator* itemIterator = iCatManager->CategoryIteratorL( |
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228 CPosLmCategoryManager::ECategorySortOrderNameAscending); |
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229 CleanupStack::PushL(itemIterator); |
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230 |
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231 // Read all categories and add them to an array |
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232 TPosLmItemId catId = itemIterator->NextL(); |
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233 while (catId != KPosLmNullItemId) |
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234 { |
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235 CPosLandmarkCategory* category = iCatManager->ReadCategoryLC(catId); |
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236 categories->AppendL(category); |
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237 CleanupStack::Pop(category); |
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238 |
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239 catId = itemIterator->NextL(); |
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240 } |
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241 CleanupStack::PopAndDestroy(itemIterator); |
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242 CleanupStack::Pop(categories); |
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243 |
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244 return categories; |
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245 } |
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246 |
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247 // ----------------------------------------------------------------------------- |
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248 // ----------------------------------------------------------------------------- |
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249 // |
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250 void CLandmarksCategoriesEngine::RunL() |
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251 { |
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252 if (iStatus == KErrNone) |
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253 { |
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254 if (iActiveOperation == ECategorySearch) |
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255 { |
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256 // Fetch search result |
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257 PopulateItemIdArrayL(); |
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258 } |
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259 else if (iActiveOperation == ECategoryRead) |
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260 { |
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261 if (iCurrentItemId < iItemIds.Count()) |
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262 { |
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263 // There are still found landmarks to read |
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264 iObserver->NotifyOperationProgressL( |
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265 iActiveOperation, KOperationNotReady, KErrNone); |
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266 ReadSomeCategoriesL(); |
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267 } |
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268 else |
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269 { |
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270 // No more matches to read |
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271 NotifyOperationReadyL(iActiveOperation, KErrNone); |
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272 } |
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273 } |
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274 } |
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275 else |
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276 { |
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277 // Operation failed. Forward error code |
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278 NotifyOperationReadyL(iActiveOperation, iStatus.Int()); |
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279 } |
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280 } |
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281 |
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282 // ----------------------------------------------------------------------------- |
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283 // ----------------------------------------------------------------------------- |
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284 // |
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285 void CLandmarksCategoriesEngine::DoCancel() |
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286 { |
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287 iLmOpWrapper->Cancel(); |
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288 if (iActiveOperation == ECategorySearch) |
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289 { |
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290 iSearchResultExists = EFalse; |
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291 } |
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292 iActiveOperation = ENoOperation; |
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293 } |
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294 |
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295 // ----------------------------------------------------------------------------- |
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296 // ----------------------------------------------------------------------------- |
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297 // |
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298 TInt CLandmarksCategoriesEngine::RunError(TInt aError) |
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299 { |
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300 // Notify user and ignore error code |
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301 TInt err; |
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302 TRAP(err, NotifyOperationReadyL(iActiveOperation, aError)); |
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303 |
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304 return KErrNone; |
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305 } |
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306 |
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307 // ----------------------------------------------------------------------------- |
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308 // ----------------------------------------------------------------------------- |
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309 // |
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310 void CLandmarksCategoriesEngine::ReadSomeCategoriesL() |
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311 { |
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312 // Create a subset of the found matches to read |
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313 iSubSetOfIds.Reset(); |
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314 TInt nrOfMatches = iItemIds.Count(); |
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315 TInt i = 0; |
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316 while (i < iNrOfItemsToRead && iCurrentItemId < nrOfMatches) |
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317 { |
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318 User::LeaveIfError( |
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319 iSubSetOfIds.Append(iItemIds[iCurrentItemId])); |
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320 iCurrentItemId++; |
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321 i++; |
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322 } |
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323 |
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324 // Simulate start reading found matches. There is no asynchronous search |
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325 // functionality for categories as there is for landmarks, |
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326 // (Compare PreparePartialLandmarksL()) |
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327 iStatus = KRequestPending; |
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328 SetPriorityAndSetActive(); |
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329 TRequestStatus* status = &iStatus; |
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330 User::RequestComplete(status, KErrNone); |
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331 } |
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332 |
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333 // ----------------------------------------------------------------------------- |
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334 // ----------------------------------------------------------------------------- |
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335 // |
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336 void CLandmarksCategoriesEngine::NotifyOperationReadyL( |
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337 TOperation aOperation, |
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338 TInt aErrorCode) |
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339 { |
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340 iActiveOperation = ENoOperation; |
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341 iObserver->NotifyOperationProgressL( |
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342 aOperation, |
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343 KOperationReady, |
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344 aErrorCode); |
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345 } |
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346 |
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347 // ----------------------------------------------------------------------------- |
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348 // ----------------------------------------------------------------------------- |
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349 // |
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350 void CLandmarksCategoriesEngine::PopulateItemIdArrayL() |
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351 { |
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352 // Fetch itemIterator |
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353 CPosLmItemIterator* itemIterator = NULL; |
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354 if (iFilterSearch) |
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355 { |
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356 itemIterator = iSearcher->MatchIteratorL(); |
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357 iSearchResultExists = ETrue; |
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358 } |
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359 else |
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360 { |
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361 itemIterator = iCatManager->CategoryIteratorL( |
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362 CPosLmCategoryManager::ECategorySortOrderNameAscending); |
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363 } |
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364 CleanupStack::PushL(itemIterator); |
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365 itemIterator->Reset(); |
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366 |
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367 // Fetch iItemIds |
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368 TUint nrOfItems = itemIterator->NumOfItemsL(); |
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369 if (nrOfItems > 0) |
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370 { |
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371 TInt startIndex = 0; |
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372 iItemIds.Reset(); |
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373 itemIterator->GetItemIdsL(iItemIds, startIndex, nrOfItems); |
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374 NotifyOperationReadyL(iActiveOperation, KErrNone); |
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375 } |
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376 else |
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377 { |
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378 // No matches found |
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379 NotifyOperationReadyL(iActiveOperation, KErrNotFound); |
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380 } |
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381 CleanupStack::PopAndDestroy(itemIterator); |
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382 } |
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383 |
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384 |
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