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1 /* |
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2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Title fetcher |
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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 |
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21 |
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22 // INCLUDE FILES |
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23 #include "glxtitlefetcher.h" |
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24 |
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25 #include <mpxcollectionpath.h> |
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26 #include <mpxmediageneraldefs.h> |
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27 #include <mglxmedialist.h> |
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28 #include <glxattributecontext.h> |
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29 #include <glxuistd.h> |
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30 #include "glxlog.h" |
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31 #include "glxtracer.h" |
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32 |
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33 |
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34 // ======== MEMBER FUNCTIONS ======== |
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35 |
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36 // --------------------------------------------------------------------------- |
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37 // C++ default constructor can NOT contain any code, that |
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38 // might leave. |
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39 // --------------------------------------------------------------------------- |
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40 // |
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41 CGlxTitleFetcher::CGlxTitleFetcher(MGlxTitleFetcherObserver& aObserver, |
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42 CMPXCollectionPath* aPath) : |
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43 iObserver(aObserver), iPath(aPath) |
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44 { |
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45 TRACER("CGlxTitleFetcher::CGlxTitleFetcher"); |
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46 } |
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47 |
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48 // --------------------------------------------------------------------------- |
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49 // Symbian 2nd phase constructor can leave. |
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50 // --------------------------------------------------------------------------- |
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51 // |
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52 |
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53 void CGlxTitleFetcher::ConstructL() |
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54 { |
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55 TRACER("CGlxTitleFetcher::ConstructL"); |
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56 // Go back one level to obtain the ID |
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57 iPathId = iPath->Id(); |
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58 // Go back another level from which to create a media list containing |
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59 // this path |
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60 iPath->Back(); |
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61 |
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62 if( iPath->Levels() < 0 ) |
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63 { |
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64 return; |
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65 } |
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66 |
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67 iBackMediaList = MGlxMediaList::InstanceL(*iPath); |
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68 |
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69 /// @todo: This idSpaceId must be calculated properly |
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70 TGlxIdSpaceId idSpaceId = iBackMediaList->IdSpaceId(0); |
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71 |
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72 TGlxMediaId id(iPathId); |
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73 TBool requestAttributes = ETrue; |
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74 TInt index = iBackMediaList->Index(idSpaceId, id); |
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75 |
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76 if ( index != KErrNotFound ) |
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77 { |
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78 const TGlxMedia& item = iBackMediaList->Item(index); |
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79 const CGlxMedia* media = item.Properties(); |
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80 |
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81 // get the Title from the attribute if it is already present |
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82 if (media && media->IsSupported(KMPXMediaGeneralTitle) |
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83 && index != KErrNotFound) |
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84 { |
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85 const TDesC& title = media->ValueText(KMPXMediaGeneralTitle); |
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86 // notify the observer |
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87 iObserver.HandleTitleAvailableL(title); |
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88 requestAttributes = EFalse; |
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89 } |
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90 } |
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91 |
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92 if ( requestAttributes ) |
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93 { |
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94 // Otherwise add a context setting range to cover all items |
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95 iContext = CGlxDefaultAttributeContext::NewL(); |
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96 iContext->SetRangeOffsets(10000,10000); |
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97 iContext->AddAttributeL(KMPXMediaGeneralTitle); |
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98 // Add the context at a high priority |
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99 iBackMediaList->AddContextL( iContext, |
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100 KGlxFetchContextPriorityTitleFetcher ); |
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101 // Set self as observer |
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102 iBackMediaList->AddMediaListObserverL(this); |
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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 // Two-phased constructor. |
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109 // --------------------------------------------------------------------------- |
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110 // |
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111 CGlxTitleFetcher* CGlxTitleFetcher::NewL(MGlxTitleFetcherObserver& aObserver, |
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112 CMPXCollectionPath* aPath) |
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113 { |
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114 CGlxTitleFetcher* self = new (ELeave) CGlxTitleFetcher(aObserver, aPath); |
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115 CleanupStack::PushL(self); |
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116 self->ConstructL(); |
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117 CleanupStack::Pop(self); |
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118 return self; |
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119 } |
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120 |
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121 // --------------------------------------------------------------------------- |
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122 // Destructor |
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123 // --------------------------------------------------------------------------- |
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124 // |
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125 CGlxTitleFetcher::~CGlxTitleFetcher() |
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126 { |
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127 TRACER("CGlxTitleFetcher::~CGlxTitleFetcher ()"); |
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128 |
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129 if(iBackMediaList) |
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130 { |
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131 if(iContext) |
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132 { |
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133 iBackMediaList->RemoveContext(iContext); |
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134 delete iContext; |
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135 } |
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136 iBackMediaList->RemoveMediaListObserver(this); |
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137 iBackMediaList->Close(); |
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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 // CGlxTitleFetcher::HandleItemAddedL |
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143 // --------------------------------------------------------------------------- |
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144 // |
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145 void CGlxTitleFetcher::HandleItemAddedL(TInt aStartIndex, TInt aEndIndex, |
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146 MGlxMediaList* aList) |
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147 { |
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148 TRACER("CGlxTitleFetcher::HandleItemAddedL ()"); |
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149 if(aList == iBackMediaList) |
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150 { |
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151 for(TInt index = aStartIndex;index <= aEndIndex;index++) |
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152 // Is it the item (path) that we want |
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153 { |
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154 if(aList->Item(index).Id().Value() == (TUint32)iPathId) |
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155 { |
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156 const TGlxMedia& item = aList->Item(index); |
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157 const CGlxMedia* media = item.Properties(); |
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158 // get the Title from the attribute |
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159 if (media && media->IsSupported(KMPXMediaGeneralTitle)) |
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160 { |
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161 const TDesC& title = media->ValueText(KMPXMediaGeneralTitle); |
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162 // notify the observer |
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163 iObserver.HandleTitleAvailableL(title); |
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164 iBackMediaList->RemoveContext(iContext); |
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165 delete iContext; |
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166 iContext = NULL; |
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167 } |
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168 } |
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169 } |
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170 } |
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171 } |
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172 // --------------------------------------------------------------------------- |
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173 // CGlxTitleFetcher::HandleAttributesAvailableL |
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174 // --------------------------------------------------------------------------- |
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175 // |
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176 void CGlxTitleFetcher::HandleAttributesAvailableL(TInt aItemIndex, |
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177 const RArray<TMPXAttribute>& /*aAttributes*/, MGlxMediaList* aList) |
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178 { |
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179 TRACER("CGlxTitleFetcher::HandleAttributesAvailableL ()"); |
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180 // Is it the list that we want |
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181 if(aList == iBackMediaList) |
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182 { |
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183 // Is it the item (path) that we want |
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184 if(aList->Item(aItemIndex).Id().Value() == (TUint32)iPathId) |
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185 { |
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186 const TGlxMedia& item = aList->Item(aItemIndex); |
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187 const CGlxMedia* media = item.Properties(); |
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188 // get the Title from the attribute |
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189 if (media && media->IsSupported(KMPXMediaGeneralTitle)) |
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190 { |
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191 const TDesC& title = media->ValueText(KMPXMediaGeneralTitle); |
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192 // notify the observer |
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193 iObserver.HandleTitleAvailableL(title); |
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194 iBackMediaList->RemoveContext(iContext); |
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195 delete iContext; |
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196 iContext = NULL; |
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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 } |
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202 |
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203 |
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204 |
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205 // End of File |