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1 /* |
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2 * Copyright (c) 2006-2008 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: Contains CNcdPreviewManager class implementation |
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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 "ncdpreviewmanager.h" |
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20 |
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21 #include "ncdnodeidentifier.h" |
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22 #include "ncdstoragemanager.h" |
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23 #include "ncdstorage.h" |
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24 #include "ncdfilestorage.h" |
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25 #include "ncdproviderdefines.h" |
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26 #include "ncdpanics.h" |
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27 #include "catalogsutils.h" |
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28 #include "ncdstorage.h" |
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29 #include "ncdstorageitem.h" |
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30 #include "ncddatabasestorage.h" |
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31 #include "ncdgeneralmanager.h" |
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32 |
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33 #include "catalogsdebug.h" |
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34 |
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35 // ======== CNcdPreviewData ======== |
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36 |
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37 |
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38 // --------------------------------------------------------------------------- |
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39 // Creators |
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40 // --------------------------------------------------------------------------- |
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41 // |
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42 CNcdPreviewManager::CNcdPreviewData* |
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43 CNcdPreviewManager::CNcdPreviewData::NewLC( |
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44 const CNcdNodeIdentifier& aId, |
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45 const TDesC& aUri, |
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46 const TDesC& aPreviewFile, |
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47 const TDesC& aMimeType ) |
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48 { |
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49 CNcdPreviewData* self = new( ELeave ) CNcdPreviewData; |
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50 CleanupStack::PushL( self ); |
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51 self->ConstructL( aId, aUri, aPreviewFile, aMimeType ); |
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52 return self; |
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53 } |
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54 |
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55 |
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56 // --------------------------------------------------------------------------- |
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57 // Destructor |
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58 // --------------------------------------------------------------------------- |
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59 // |
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60 CNcdPreviewManager::CNcdPreviewData::~CNcdPreviewData() |
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61 { |
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62 DLTRACEIN(("")); |
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63 delete iId; |
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64 delete iUri; |
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65 delete iFilename; |
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66 delete iMimeType; |
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67 } |
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68 |
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69 |
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70 // --------------------------------------------------------------------------- |
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71 // Equals |
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72 // --------------------------------------------------------------------------- |
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73 // |
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74 TBool CNcdPreviewManager::CNcdPreviewData::Equals( |
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75 const CNcdNodeIdentifier& aId, |
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76 const TDesC& aUri ) const |
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77 { |
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78 return aId.Equals( *iId ) && aUri.Compare( *iUri ) == 0; |
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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 // Id getter |
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84 // --------------------------------------------------------------------------- |
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85 // |
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86 const CNcdNodeIdentifier& CNcdPreviewManager::CNcdPreviewData::Id() const |
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87 { |
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88 DASSERT( iId ); |
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89 return *iId; |
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90 } |
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91 |
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92 |
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93 // --------------------------------------------------------------------------- |
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94 // URI getter |
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95 // --------------------------------------------------------------------------- |
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96 // |
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97 const TDesC& CNcdPreviewManager::CNcdPreviewData::Uri() const |
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98 { |
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99 DASSERT( iUri ); |
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100 return *iUri; |
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101 } |
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102 |
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103 |
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104 // --------------------------------------------------------------------------- |
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105 // Filename getter |
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106 // --------------------------------------------------------------------------- |
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107 // |
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108 const TDesC& CNcdPreviewManager::CNcdPreviewData::Filename() const |
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109 { |
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110 DASSERT( iFilename ); |
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111 return *iFilename; |
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112 } |
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113 |
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114 |
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115 // --------------------------------------------------------------------------- |
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116 // Mime type getter |
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117 // --------------------------------------------------------------------------- |
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118 // |
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119 const TDesC& CNcdPreviewManager::CNcdPreviewData::MimeType() const |
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120 { |
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121 DASSERT( iMimeType ); |
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122 return *iMimeType; |
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123 } |
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124 |
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125 |
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126 // --------------------------------------------------------------------------- |
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127 // Constructor |
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128 // --------------------------------------------------------------------------- |
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129 // |
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130 CNcdPreviewManager::CNcdPreviewData::CNcdPreviewData() |
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131 { |
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132 } |
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133 |
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134 |
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135 // --------------------------------------------------------------------------- |
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136 // ConstructL |
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137 // --------------------------------------------------------------------------- |
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138 // |
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139 void CNcdPreviewManager::CNcdPreviewData::ConstructL( |
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140 const CNcdNodeIdentifier& aId, |
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141 const TDesC& aUri, |
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142 const TDesC& aPreviewFile, |
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143 const TDesC& aMimeType ) |
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144 { |
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145 DLTRACEIN(("")); |
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146 iId = CNcdNodeIdentifier::NewL( aId ); |
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147 iUri = aUri.AllocL(); |
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148 iFilename = aPreviewFile.AllocL(); |
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149 iMimeType = aMimeType.AllocL(); |
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150 } |
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151 |
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152 |
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153 // --------------------------------------------------------------------------- |
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154 // |
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155 // --------------------------------------------------------------------------- |
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156 // |
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157 void CNcdPreviewManager::CNcdPreviewData::ExternalizeL( RWriteStream& aStream ) |
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158 { |
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159 iId->ExternalizeL( aStream ); |
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160 ExternalizeDesL( *iUri, aStream ); |
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161 ExternalizeDesL( *iFilename, aStream ); |
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162 ExternalizeDesL( *iMimeType, aStream ); |
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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 // --------------------------------------------------------------------------- |
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169 // |
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170 void CNcdPreviewManager::CNcdPreviewData::InternalizeL( RReadStream& aStream ) |
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171 { |
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172 iId = CNcdNodeIdentifier::NewL(); |
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173 iId->InternalizeL( aStream ); |
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174 InternalizeDesL( iUri, aStream ); |
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175 InternalizeDesL( iFilename, aStream ); |
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176 InternalizeDesL( iMimeType, aStream ); |
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177 } |
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178 |
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179 |
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180 // ======== PUBLIC MEMBER FUNCTIONS ======== |
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181 |
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182 |
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183 // --------------------------------------------------------------------------- |
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184 // Creator |
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185 // --------------------------------------------------------------------------- |
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186 // |
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187 CNcdPreviewManager* CNcdPreviewManager::NewL( |
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188 CNcdGeneralManager& aGeneralManager, TInt aMaxCount ) |
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189 { |
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190 CNcdPreviewManager* self = new( ELeave ) CNcdPreviewManager( |
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191 aGeneralManager, aMaxCount ); |
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192 CleanupStack::PushL( self ); |
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193 self->ConstructL(); |
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194 CleanupStack::Pop( self ); |
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195 return self; |
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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 // Destructor |
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201 // --------------------------------------------------------------------------- |
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202 // |
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203 CNcdPreviewManager::~CNcdPreviewManager() |
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204 { |
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205 DLTRACEIN(("")); |
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206 // delete previews |
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207 iPreviews.ResetAndDestroy(); |
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208 } |
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209 |
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210 |
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211 // --------------------------------------------------------------------------- |
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212 // Add preview |
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213 // --------------------------------------------------------------------------- |
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214 // |
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215 void CNcdPreviewManager::AddPreviewL( |
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216 const CNcdNodeIdentifier& aId, |
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217 const TDesC& aUri, |
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218 const TDesC& aPreviewFile, |
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219 const TDesC& aMimeType ) |
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220 { |
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221 DLTRACEIN(("")); |
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222 |
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223 // Check if the client already has a matching preview |
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224 TInt previewIndex = FindPreview( aId, aUri ); |
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225 if ( previewIndex != KErrNotFound ) |
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226 { |
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227 // Remove old preview |
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228 RemovePreviewL( aId, aUri ); |
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229 } |
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230 |
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231 DLTRACE(("Create preview data")); |
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232 |
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233 // If we already have maximum number of previews, remove the oldest |
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234 while ( iPreviews.Count() >= iMaxCount ) |
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235 { |
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236 DLTRACE(("Removing old preview")); |
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237 CNcdPreviewData& data( *iPreviews[0] ); |
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238 RemovePreviewL( data.Id(), data.Uri() ); |
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239 } |
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240 |
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241 MNcdFileStorage& fileStorage = FileStorageL( aId ); |
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242 TParsePtrC target( aPreviewFile ); |
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243 |
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244 // Create new preview data |
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245 CNcdPreviewData* data = CNcdPreviewData::NewLC( aId, aUri, |
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246 target.NameAndExt(), aMimeType ); |
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247 |
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248 DLTRACE(("Moving the file")); |
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249 fileStorage.AddFileL( aPreviewFile, ETrue ); |
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250 |
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251 DLTRACE(("Add preview data")); |
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252 iPreviews.AppendL( data ); |
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253 CleanupStack::Pop( data ); |
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254 |
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255 SaveDataL(); |
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256 } |
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257 |
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258 |
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259 // --------------------------------------------------------------------------- |
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260 // |
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261 // --------------------------------------------------------------------------- |
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262 // |
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263 TInt CNcdPreviewManager::RemovePreviewL( |
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264 const CNcdNodeIdentifier& aId, |
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265 const TDesC& aUri ) |
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266 { |
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267 DLTRACEIN(("")); |
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268 |
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269 TInt previewIndex = FindPreview( aId, aUri ); |
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270 if ( previewIndex != KErrNotFound ) |
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271 { |
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272 MNcdFileStorage& fileStorage = FileStorageL( aId ); |
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273 TRAPD( err, fileStorage.RemoveFileL( |
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274 iPreviews[previewIndex]->Filename() ) ); |
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275 |
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276 DLINFO(("File removal error code: %i", err )); |
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277 |
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278 // We don't want to delete previewdata if we couldn't |
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279 // delete the file |
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280 if ( err == KErrNone || err == KErrNotFound ) |
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281 { |
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282 delete iPreviews[ previewIndex ]; |
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283 iPreviews.Remove( previewIndex ); |
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284 SaveDataL(); |
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285 } |
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286 return err; |
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287 } |
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288 |
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289 return KErrNotFound; |
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290 } |
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291 |
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292 |
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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 RFile CNcdPreviewManager::PreviewL( |
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298 RFs& aFs, |
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299 const CNcdNodeIdentifier& aId, |
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300 const TDesC& aUri ) |
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301 { |
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302 DLTRACEIN(("")); |
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303 |
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304 TInt previewIndex = FindPreview( aId, aUri ); |
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305 if ( previewIndex == KErrNotFound ) |
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306 { |
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307 User::Leave( KErrNotFound ); |
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308 } |
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309 |
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310 MNcdFileStorage& fileStorage = FileStorageL( aId ); |
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311 |
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312 RFile file; |
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313 |
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314 DLTRACE(("Opening preview file")); |
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315 TRAPD( trapError, file = |
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316 fileStorage.OpenFileL( aFs, |
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317 iPreviews[ previewIndex ]->Filename(), |
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318 NcdProviderDefines::KNcdSharableFileOpenFlags ) ); |
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319 |
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320 if( trapError != KErrNone ) |
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321 { |
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322 TRAP_IGNORE( RemovePreviewL( aId, aUri ) ); |
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323 User::Leave( trapError ); |
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324 } |
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325 |
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326 return file; |
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327 } |
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328 |
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329 |
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330 // --------------------------------------------------------------------------- |
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331 // |
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332 // --------------------------------------------------------------------------- |
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333 // |
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334 TBool CNcdPreviewManager::PreviewExists( |
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335 const CNcdNodeIdentifier& aId, |
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336 const TDesC& aUri ) const |
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337 { |
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338 DLTRACEIN(("")); |
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339 return FindPreview( aId, aUri ) != KErrNotFound; |
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340 } |
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341 |
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342 |
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343 // --------------------------------------------------------------------------- |
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344 // |
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345 // --------------------------------------------------------------------------- |
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346 // |
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347 const TDesC& CNcdPreviewManager::PreviewMimeType( |
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348 const CNcdNodeIdentifier& aId, |
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349 const TDesC& aUri ) const |
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350 { |
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351 DLTRACEIN(("")); |
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352 TInt previewIndex = FindPreview( aId, aUri ); |
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353 if ( previewIndex != KErrNotFound ) |
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354 { |
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355 return iPreviews[ previewIndex ]->MimeType(); |
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356 } |
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357 |
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358 return KNullDesC(); |
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359 } |
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360 |
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361 |
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362 // --------------------------------------------------------------------------- |
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363 // |
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364 // --------------------------------------------------------------------------- |
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365 // |
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366 void CNcdPreviewManager::RemoveAllPreviewsL() |
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367 { |
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368 DLTRACEIN(("")); |
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369 |
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370 iStorageManager.RemoveStorageL( |
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371 iGeneralManager.FamilyName(), |
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372 NcdProviderDefines::KPreviewStorageNamespace ); |
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373 |
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374 iPreviews.ResetAndDestroy(); |
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375 |
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376 SaveDataL(); |
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377 } |
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378 |
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379 |
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380 // --------------------------------------------------------------------------- |
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381 // |
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382 // --------------------------------------------------------------------------- |
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383 // |
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384 void CNcdPreviewManager::ExternalizeL( RWriteStream& aStream ) |
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385 { |
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386 DLTRACEIN(("")); |
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387 TInt previewCount = iPreviews.Count(); |
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388 aStream.WriteInt32L( previewCount ); |
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389 |
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390 for( TInt i = 0; i < previewCount; i++ ) |
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391 { |
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392 iPreviews[ i ]->ExternalizeL( aStream ); |
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393 } |
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394 } |
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395 |
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396 |
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397 // --------------------------------------------------------------------------- |
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398 // |
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399 // --------------------------------------------------------------------------- |
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400 // |
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401 void CNcdPreviewManager::InternalizeL( RReadStream& aStream ) |
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402 { |
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403 DLTRACEIN(("")); |
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404 iPreviews.ResetAndDestroy(); |
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405 |
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406 TInt previewCount = aStream.ReadInt32L(); |
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407 iPreviews.ReserveL( previewCount ); |
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408 |
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409 for( TInt i = 0; i < previewCount; i++ ) |
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410 { |
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411 CNcdPreviewData* previewData = new( ELeave ) CNcdPreviewData; |
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412 CleanupStack::PushL( previewData ); |
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413 previewData->InternalizeL( aStream ); |
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414 iPreviews.Append( previewData ); |
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415 CleanupStack::Pop( previewData ); |
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416 previewData = NULL; |
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417 } |
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418 } |
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419 |
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420 |
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421 // --------------------------------------------------------------------------- |
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422 // |
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423 // --------------------------------------------------------------------------- |
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424 // |
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425 CNcdPreviewManager::CNcdPreviewManager( |
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426 CNcdGeneralManager& aGeneralManager, TInt aMaxCount ) : |
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427 iGeneralManager( aGeneralManager ), |
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428 iStorageManager( aGeneralManager.StorageManager() ), |
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429 iMaxCount( aMaxCount ) |
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430 { |
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431 NCD_ASSERT_ALWAYS( iMaxCount > 0, ENcdPanicInvalidArgument ); |
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432 } |
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433 |
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434 |
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435 // --------------------------------------------------------------------------- |
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436 // ConstructL |
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437 // --------------------------------------------------------------------------- |
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438 // |
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439 void CNcdPreviewManager::ConstructL() |
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440 { |
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441 } |
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442 |
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443 |
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444 // --------------------------------------------------------------------------- |
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445 // Find preview |
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446 // --------------------------------------------------------------------------- |
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447 // |
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448 TInt CNcdPreviewManager::FindPreview( |
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449 const CNcdNodeIdentifier& aId, |
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450 const TDesC& aUri ) const |
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451 { |
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452 TInt count = iPreviews.Count(); |
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453 for ( TInt i = 0; i < count; ++i ) |
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454 { |
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455 if ( iPreviews[ i ]->Equals( aId, aUri ) ) |
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456 { |
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457 return i; |
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458 } |
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459 } |
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460 return KErrNotFound; |
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461 } |
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462 |
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463 |
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464 // --------------------------------------------------------------------------- |
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465 // FileStorageL |
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466 // --------------------------------------------------------------------------- |
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467 // |
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468 MNcdFileStorage& CNcdPreviewManager::FileStorageL( |
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469 const CNcdNodeIdentifier& aId ) |
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470 { |
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471 DLTRACEIN(( _L("Namespace: %S"), &aId.NodeNameSpace() )); |
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472 |
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473 MNcdStorage& storage = iStorageManager.CreateOrGetStorageL( |
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474 iGeneralManager.FamilyName(), |
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475 NcdProviderDefines::KPreviewStorageNamespace ); |
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476 |
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477 // Get rid of invalid characters in the namespace since it'll be |
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478 // used as a directory name |
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479 HBufC* id = EncodeFilenameLC( |
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480 aId.NodeNameSpace(), |
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481 iStorageManager.FileSession() ); |
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482 |
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483 MNcdFileStorage& fileStorage( storage.FileStorageL( *id ) ); |
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484 |
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485 CleanupStack::PopAndDestroy( id ); |
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486 return fileStorage; |
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487 } |
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488 |
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489 // --------------------------------------------------------------------------- |
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490 // SaveDataL |
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491 // --------------------------------------------------------------------------- |
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492 // |
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493 void CNcdPreviewManager::SaveDataL() |
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494 { |
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495 DLTRACEIN(("")); |
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496 |
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497 MNcdDatabaseStorage& database = |
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498 iStorageManager.ProviderStorageL( |
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499 iGeneralManager.FamilyName() ).DatabaseStorageL( |
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500 NcdProviderDefines::KDefaultDatabaseUid ); |
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501 |
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502 MNcdStorageItem* item = |
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503 database.StorageItemL( KNullDesC(), |
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504 NcdProviderDefines::ENcdPreviewManager ); |
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505 |
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506 item->SetDataItem( this ); |
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507 item->OpenL(); |
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508 |
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509 item->WriteDataL(); |
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510 |
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511 item->SaveL(); |
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512 DLTRACEOUT(("")); |
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513 } |
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514 |
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515 |
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516 // --------------------------------------------------------------------------- |
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517 // Loads data |
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518 // --------------------------------------------------------------------------- |
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519 // |
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520 void CNcdPreviewManager::LoadDataL() |
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521 { |
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522 DLTRACEIN(("")); |
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523 |
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524 MNcdDatabaseStorage& database = |
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525 iStorageManager.ProviderStorageL( |
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526 iGeneralManager.FamilyName() ).DatabaseStorageL( |
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527 NcdProviderDefines::KDefaultDatabaseUid ); |
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528 |
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529 if( !database.ItemExistsInStorageL( KNullDesC(), |
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530 NcdProviderDefines::ENcdPreviewManager ) ) |
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531 { |
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532 return; |
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533 } |
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534 |
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535 MNcdStorageItem* item = |
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536 database.StorageItemL( KNullDesC(), |
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537 NcdProviderDefines::ENcdPreviewManager ); |
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538 |
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539 item->SetDataItem( this ); |
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540 item->ReadDataL(); |
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541 |
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542 DLTRACEOUT(("")); |
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543 } |
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544 |