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: Implements the CLandmarksEngine class |
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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 <aknview.h> |
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21 #include <EPos_CPosLandmarkDatabase.h> |
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22 #include <EPos_CPosLmPartialReadParameters.h> |
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23 #include <EPos_CPosLandmarkSearch.h> |
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24 #include <EPos_CPosLmTextCriteria.h> |
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25 |
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26 #include "LandmarksEngine.h" |
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27 #include "LandmarksLmOpWrapper.h" |
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28 |
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29 // ============================ MEMBER FUNCTIONS =============================== |
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30 |
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31 // ----------------------------------------------------------------------------- |
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32 // ----------------------------------------------------------------------------- |
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33 // |
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34 CLandmarksEngine::CLandmarksEngine( |
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35 CPosLandmarkDatabase& aDb) |
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36 : CLandmarksEngineBase(aDb), |
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37 iSortPref(CPosLandmark::ELandmarkName, TPosLmSortPref::EAscending) |
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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 // ----------------------------------------------------------------------------- |
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43 // |
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44 void CLandmarksEngine::ConstructL() |
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45 { |
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46 CLandmarksEngineBase::ConstructL(); |
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47 |
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48 // Set partial read parameters |
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49 CPosLmPartialReadParameters* partialReadParams = |
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50 CPosLmPartialReadParameters::NewLC(); |
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51 partialReadParams->SetRequestedAttributes( |
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52 CPosLandmark::ELandmarkName | CPosLandmark::EIcon); |
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53 iDb.SetPartialReadParametersL(*partialReadParams); |
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54 CleanupStack::PopAndDestroy(partialReadParams); |
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55 } |
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56 |
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57 // ----------------------------------------------------------------------------- |
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58 // ----------------------------------------------------------------------------- |
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59 // |
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60 CLandmarksEngine* CLandmarksEngine::NewL( |
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61 CPosLandmarkDatabase& aDb) |
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62 { |
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63 CLandmarksEngine* self = new (ELeave) CLandmarksEngine(aDb); |
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64 CleanupStack::PushL(self); |
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65 self->ConstructL(); |
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66 CleanupStack::Pop(self); |
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67 return self; |
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68 } |
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69 |
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70 // ----------------------------------------------------------------------------- |
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71 // ----------------------------------------------------------------------------- |
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72 // |
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73 CLandmarksEngine::~CLandmarksEngine() |
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74 { |
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75 Cancel(); |
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76 iItemIds.Close(); |
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77 } |
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78 |
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79 // ----------------------------------------------------------------------------- |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 TBool CLandmarksEngine::StartInitializeDbIfNecessaryL( |
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83 MLandmarksOperationObserver* aObserver) |
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84 { |
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85 if (iDb.IsInitializingNeeded()) |
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86 { |
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87 // Create initialize operation |
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88 CPosLmOperation* operation = iDb.InitializeL(); |
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89 |
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90 iObserver = aObserver; |
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91 iActiveOperation = EInitializeDb; |
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92 iStatus = KRequestPending; |
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93 SetPriorityAndSetActive(); |
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94 |
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95 // Start asynchronous initialization |
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96 TBool reportProgress = ETrue; |
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97 iLmOpWrapper->StartOperation(operation, iStatus, reportProgress); |
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98 |
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99 return ETrue; |
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100 } |
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101 else |
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102 { |
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103 return EFalse; |
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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 // ----------------------------------------------------------------------------- |
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109 // |
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110 void CLandmarksEngine::AddLandmarkL(CPosLandmark& aLandmark) |
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111 { |
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112 iDb.AddLandmarkL(aLandmark); |
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113 } |
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114 |
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115 // ----------------------------------------------------------------------------- |
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116 // ----------------------------------------------------------------------------- |
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117 // |
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118 void CLandmarksEngine::CommitLandmarkL(const CPosLandmark& aLandmark) |
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119 { |
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120 iDb.UpdateLandmarkL(aLandmark); |
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121 } |
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122 |
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123 // ----------------------------------------------------------------------------- |
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124 // ----------------------------------------------------------------------------- |
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125 // |
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126 void CLandmarksEngine::DeleteLandmarkL(TPosLmItemId aItemId) |
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127 { |
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128 iDb.RemoveLandmarkL(aItemId); |
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129 } |
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130 |
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131 // ----------------------------------------------------------------------------- |
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132 // ----------------------------------------------------------------------------- |
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133 // |
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134 CPosLandmark* CLandmarksEngine::LandmarkLC(TPosLmItemId aItemId) |
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135 { |
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136 return iDb.ReadLandmarkLC(aItemId); |
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137 } |
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138 |
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139 // ----------------------------------------------------------------------------- |
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140 // ----------------------------------------------------------------------------- |
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141 // |
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142 void CLandmarksEngine::StartSearchingLandmarksL( |
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143 MLandmarksOperationObserver* aObserver) |
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144 { |
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145 // We need to cancel if we are searching/reading landmarks. |
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146 Cancel(); |
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147 |
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148 iObserver = aObserver; |
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149 iSearchResultExists = EFalse; |
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150 iFilterSearch = EFalse; |
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151 |
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152 // Complete ourselves and start search for all landmarks in db in RunL(). |
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153 iStatus = KRequestPending; |
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154 SetPriorityAndSetActive(); |
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155 iActiveOperation = ELandmarkSearch; |
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156 TRequestStatus* status = &iStatus; |
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157 User::RequestComplete(status, KErrNone); |
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158 } |
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159 |
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160 // ----------------------------------------------------------------------------- |
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161 // ----------------------------------------------------------------------------- |
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162 // |
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163 void CLandmarksEngine::StartSearchingLandmarksL( |
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164 const TDesC& aSearchPattern, |
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165 TBool aSearchOnlyInPreviousMatches, |
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166 MLandmarksOperationObserver* aObserver) |
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167 { |
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168 // We need to cancel if we are searching/reading landmarks. |
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169 Cancel(); |
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170 |
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171 if (!iSearchResultExists) |
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172 { |
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173 // There are no previous results or previous search did not complete. |
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174 // We cannot use the result from it. |
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175 aSearchOnlyInPreviousMatches = EFalse; |
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176 } |
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177 iSearchResultExists = EFalse; |
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178 iFilterSearch = ETrue; |
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179 |
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180 // Set search criteria |
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181 CPosLmTextCriteria* criteria = CPosLmTextCriteria::NewLC(); |
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182 criteria->SetTextL(aSearchPattern); |
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183 criteria->SetAttributesToSearch(CPosLandmark::ELandmarkName); |
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184 |
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185 // Create search operation |
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186 CPosLmOperation* operation = iSearcher->StartLandmarkSearchL( |
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187 *criteria, iSortPref, aSearchOnlyInPreviousMatches); |
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188 CleanupStack::PopAndDestroy(criteria); |
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189 |
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190 // Start search operation |
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191 iObserver = aObserver; |
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192 iStatus = KRequestPending; |
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193 iLmOpWrapper->StartOperation(operation, iStatus); |
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194 SetPriorityAndSetActive(); |
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195 iActiveOperation = ELandmarkSearch; |
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196 } |
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197 |
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198 // ----------------------------------------------------------------------------- |
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199 // ----------------------------------------------------------------------------- |
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200 // |
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201 RArray<TPosLmItemId>* CLandmarksEngine::FetchSearchResult() |
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202 { |
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203 return &iItemIds; |
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204 } |
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205 |
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206 // ----------------------------------------------------------------------------- |
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207 // ----------------------------------------------------------------------------- |
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208 // |
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209 void CLandmarksEngine::StartReadingLandmarksL( |
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210 TInt aNrOfItemsToReadPerBundle, |
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211 MLandmarksOperationObserver* aObserver) |
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212 { |
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213 // We need to cancel if we are searching/reading landmarks. |
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214 Cancel(); |
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215 |
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216 iNrOfItemsToRead = aNrOfItemsToReadPerBundle; |
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217 iObserver = aObserver; |
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218 iCurrentItemId = 0; |
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219 |
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220 // Start reading a bundle of landmarks |
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221 ReadSomeLandmarksL(); |
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222 iActiveOperation = ELandmarkRead; |
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223 } |
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224 |
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225 // ----------------------------------------------------------------------------- |
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226 // ----------------------------------------------------------------------------- |
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227 // |
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228 CArrayPtr<CPosLandmark>* CLandmarksEngine::FetchLandmarksLC() |
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229 { |
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230 // Fetch the partially read landmarks. |
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231 CArrayPtr<CPosLandmark>* result = |
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232 iDb.TakePreparedPartialLandmarksL(iLmOpWrapper->LmOperationPtr()); |
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233 CleanupStack::PushL(result); |
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234 |
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235 return result; |
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236 } |
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237 |
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238 // ----------------------------------------------------------------------------- |
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239 // ----------------------------------------------------------------------------- |
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240 // |
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241 void CLandmarksEngine::RunL() |
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242 { |
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243 if (iActiveOperation == EInitializeDb) |
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244 { |
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245 // Report progress |
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246 iObserver->NotifyOperationProgressL( |
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247 iActiveOperation, iLmOpWrapper->Progress(), iStatus.Int()); |
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248 |
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249 if (iStatus == KPosLmOperationNotComplete) |
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250 { |
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251 // Continue initializing database until finished |
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252 iStatus = KRequestPending; |
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253 SetPriorityAndSetActive(); |
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254 iLmOpWrapper->ExecuteNextStep(iStatus); |
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255 } |
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256 } |
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257 else if (iStatus != KErrNone) |
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258 { |
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259 // Operation failed. Report error code |
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260 NotifyOperationReadyL(iActiveOperation, iStatus.Int()); |
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261 } |
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262 else if (iActiveOperation == ELandmarkSearch) |
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263 { |
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264 // Fetch search result |
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265 PopulateItemIdArrayL(); |
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266 } |
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267 else if (iActiveOperation == ELandmarkRead) |
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268 { |
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269 if (iCurrentItemId < iItemIds.Count()) |
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270 { |
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271 // There are still found landmarks to read |
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272 iObserver->NotifyOperationProgressL(iActiveOperation, KOperationNotReady, KErrNone); |
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273 ReadSomeLandmarksL(); |
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274 } |
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275 else |
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276 { |
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277 // No more matches to read |
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278 NotifyOperationReadyL(iActiveOperation, KErrNone); |
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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 // |
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286 void CLandmarksEngine::DoCancel() |
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287 { |
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288 iLmOpWrapper->Cancel(); |
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289 |
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290 if (iActiveOperation == ELandmarkSearch) |
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291 { |
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292 iSearchResultExists = EFalse; |
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293 } |
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294 iActiveOperation = ENoOperation; |
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295 } |
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296 |
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297 // ----------------------------------------------------------------------------- |
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298 // ----------------------------------------------------------------------------- |
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299 // |
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300 TInt CLandmarksEngine::RunError(TInt aError) |
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301 { |
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302 // Notify user and ignore error code |
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303 TInt err; |
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304 TRAP(err, NotifyOperationReadyL(iActiveOperation, aError)); |
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305 |
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306 return KErrNone; |
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307 } |
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308 |
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309 // ----------------------------------------------------------------------------- |
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310 // ----------------------------------------------------------------------------- |
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311 // |
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312 void CLandmarksEngine::ReadSomeLandmarksL() |
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313 { |
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314 RArray<TPosLmItemId> subSetOfIds; |
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315 CleanupClosePushL(subSetOfIds); |
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316 |
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317 // Create a subset of the found matches to read |
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318 TInt nrOfMatches = iItemIds.Count(); |
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319 TInt i = 0; |
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320 while (i < iNrOfItemsToRead && iCurrentItemId < nrOfMatches) |
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321 { |
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322 User::LeaveIfError(subSetOfIds.Append(iItemIds[iCurrentItemId])); |
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323 iCurrentItemId++; |
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324 i++; |
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325 } |
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326 |
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327 // Start reading subset of found matches |
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328 iStatus = KRequestPending; |
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329 CPosLmOperation* operation = iDb.PreparePartialLandmarksL(subSetOfIds); |
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330 iLmOpWrapper->StartOperation(operation, iStatus); |
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331 SetPriorityAndSetActive(); |
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332 |
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333 CleanupStack::PopAndDestroy(&subSetOfIds); |
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334 } |
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335 |
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336 // ----------------------------------------------------------------------------- |
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337 // ----------------------------------------------------------------------------- |
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338 // |
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339 void CLandmarksEngine::NotifyOperationReadyL( |
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340 TOperation aOperation, |
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341 TInt aErrorCode) |
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342 { |
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343 iActiveOperation = ENoOperation; |
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344 iObserver->NotifyOperationProgressL( |
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345 aOperation, |
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346 KOperationReady, |
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347 aErrorCode); |
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348 } |
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349 |
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350 // ----------------------------------------------------------------------------- |
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351 // ----------------------------------------------------------------------------- |
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352 // |
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353 void CLandmarksEngine::PopulateItemIdArrayL() |
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354 { |
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355 // Fetch itemIterator |
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356 CPosLmItemIterator* itemIterator = NULL; |
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357 if (iFilterSearch) |
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358 { |
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359 itemIterator = iSearcher->MatchIteratorL(); |
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360 iSearchResultExists = ETrue; |
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361 } |
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362 else |
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363 { |
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364 itemIterator = iDb.LandmarkIteratorL(iSortPref); |
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365 } |
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366 CleanupStack::PushL(itemIterator); |
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367 itemIterator->Reset(); |
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368 |
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369 // Fetch iItemIds |
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370 TUint nrOfItems = itemIterator->NumOfItemsL(); |
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371 if (nrOfItems > 0) |
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372 { |
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373 TInt startIndex = 0; |
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374 iItemIds.Reset(); |
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375 itemIterator->GetItemIdsL(iItemIds, startIndex, nrOfItems); |
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376 NotifyOperationReadyL(iActiveOperation, KErrNone); |
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377 } |
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378 else |
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379 { |
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380 // No matches found |
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381 NotifyOperationReadyL(iActiveOperation, KErrNotFound); |
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382 } |
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383 CleanupStack::PopAndDestroy(itemIterator); |
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384 } |
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385 |
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386 |
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