1 /* |
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2 * Copyright (c) 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: |
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15 * Active object to load widgets into list |
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16 * |
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17 */ |
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18 |
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19 // INCLUDE FILES |
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20 #include "wmcommon.h" |
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21 #include "wmplugin.h" |
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22 #include "wmresourceloader.h" |
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23 #include "wmpersistentwidgetorder.h" |
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24 #include "wmlistbox.h" |
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25 #include "wmwidgetloaderao.h" |
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26 |
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27 #include <hscontentcontroller.h> // content control api |
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28 #include <hscontentinfoarray.h> // content control api |
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29 #include <WidgetRegistryClient.h> // widget reqistry |
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30 |
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31 |
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32 // --------------------------------------------------------------------------- |
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33 // CWmWidgetLoaderAo::NewL |
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34 // --------------------------------------------------------------------------- |
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35 // |
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36 CWmWidgetLoaderAo* CWmWidgetLoaderAo::NewL( |
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37 CWmPlugin& aWmPlugin, |
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38 CWmListBox& aTargetList ) |
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39 { |
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40 CWmWidgetLoaderAo* self = new (ELeave) CWmWidgetLoaderAo( |
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41 aWmPlugin, aTargetList ); |
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42 CleanupStack::PushL( self ); |
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43 self->ConstructL(); |
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44 CleanupStack::Pop( self ); |
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45 return self; |
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46 } |
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47 |
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48 // --------------------------------------------------------------------------- |
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49 // CWmWidgetLoaderAo::NewL |
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50 // --------------------------------------------------------------------------- |
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51 // |
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52 CWmWidgetLoaderAo::CWmWidgetLoaderAo( |
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53 CWmPlugin& aWmPlugin, |
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54 CWmListBox& aTargetList ) |
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55 : CAsyncOneShot( EPriorityLow ) |
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56 , iWmPlugin( aWmPlugin ) |
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57 , iWidgetsList( aTargetList ) |
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58 { |
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59 iWidgetRegistry = NULL; |
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60 iWidgetOrder = NULL; |
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61 } |
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62 |
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63 // --------------------------------------------------------------------------- |
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64 // CWmWidgetLoaderAo::ConstructL |
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65 // --------------------------------------------------------------------------- |
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66 // |
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67 void CWmWidgetLoaderAo::ConstructL() |
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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 // CWmWidgetLoaderAo::~CWmWidgetLoaderAo |
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73 // --------------------------------------------------------------------------- |
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74 // |
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75 CWmWidgetLoaderAo::~CWmWidgetLoaderAo() |
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76 { |
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77 // cancel ongoing operation |
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78 Cancel(); |
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79 |
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80 // cleanup run data |
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81 Cleanup(); |
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82 |
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83 } |
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84 |
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85 // --------------------------------------------------------------------------- |
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86 // CWmWidgetLoaderAo::StartLoading |
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87 // --------------------------------------------------------------------------- |
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88 // |
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89 void CWmWidgetLoaderAo::StartLoading() |
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90 { |
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91 if ( IsActive() ) |
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92 { |
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93 // cancel ongoing process |
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94 Cancel(); |
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95 } |
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96 Call(); |
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97 } |
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98 |
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99 // --------------------------------------------------------------------------- |
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100 // CWmWidgetLoaderAo::RunL |
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101 // --------------------------------------------------------------------------- |
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102 // |
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103 void CWmWidgetLoaderAo::RunL() |
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104 { |
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105 DoLoadWidgetsL(); |
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106 Cleanup(); |
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107 } |
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108 |
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109 // --------------------------------------------------------------------------- |
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110 // CWmWidgetLoaderAo::RunError |
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111 // --------------------------------------------------------------------------- |
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112 // |
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113 TInt CWmWidgetLoaderAo::RunError( TInt /*aError*/ ) |
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114 { |
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115 Cleanup(); |
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116 return KErrNone; |
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117 } |
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118 |
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119 // --------------------------------------------------------- |
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120 // CWmWidgetLoaderAo::DoLoadWidgetsL |
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121 // --------------------------------------------------------- |
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122 // |
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123 void CWmWidgetLoaderAo::DoLoadWidgetsL() |
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124 { |
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125 // 1. mark all the existing widgets initially non-valid |
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126 for( TInt i=0; i<iWidgetsList.WidgetDataCount(); ++i ) |
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127 iWidgetsList.WidgetData(i).SetValid( EFalse ); |
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128 |
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129 // 2. load the widgets array |
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130 MHsContentController& controller = iWmPlugin.ContentController(); |
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131 CHsContentInfoArray* contentInfoArray = CHsContentInfoArray::NewL(); |
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132 CleanupStack::PushL( contentInfoArray ); |
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133 controller.WidgetListL( *contentInfoArray ); |
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134 |
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135 // 3. load the widget order |
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136 iWidgetOrder = CWmPersistentWidgetOrder::NewL( iWmPlugin.FileServer() ); |
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137 TRAPD( loadError, iWidgetOrder->LoadL() ); |
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138 |
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139 // 4. loop through the content array and compare it against the existing |
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140 // widget data. |
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141 TInt widgetsAdded = 0; |
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142 for ( TInt i=0; i < contentInfoArray->Array().Count(); i++ ) |
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143 { |
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144 CHsContentInfo* contentInfo = contentInfoArray->Array()[i]; |
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145 |
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146 // check if this widget exists. |
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147 // if it does, keep the existing one |
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148 // if it does not, add it |
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149 CWmWidgetData* existingData = FindWidgetData( *contentInfo ); |
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150 if ( existingData ) |
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151 { |
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152 // keep the existing one |
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153 existingData->SetValid( ETrue ); |
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154 } |
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155 else |
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156 { |
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157 // add a new one |
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158 AddWidgetDataL( *contentInfo ); |
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159 ++widgetsAdded; |
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160 } |
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161 } |
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162 |
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163 // if widgets were added, extend the listbox |
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164 if ( widgetsAdded ) |
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165 iWidgetsList.HandleItemAdditionL(); |
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166 |
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167 // 5: finally, remove all UI widgets that during the loading process were |
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168 // NOT marked as VALID. those widgets do not exist anymore. |
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169 TInt widgetsRemoved = 0; |
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170 for( TInt i=0; i<iWidgetsList.WidgetDataCount(); i++ ) |
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171 { |
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172 if( !iWidgetsList.WidgetData(i).IsValid() ) |
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173 { |
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174 iWidgetsList.RemoveWidgetData( i ); |
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175 ++widgetsRemoved; |
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176 } |
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177 } |
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178 |
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179 // 6: cleanup |
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180 CleanupStack::PopAndDestroy( contentInfoArray ); |
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181 |
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182 // 7. redraw list |
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183 if ( widgetsAdded > 0 || widgetsRemoved > 0 ) |
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184 { |
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185 iWidgetsList.DrawDeferred(); |
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186 } |
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187 |
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188 // 8. store list order if necessary |
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189 if ( loadError != KErrNone || widgetsAdded > 0 || widgetsRemoved > 0 ) |
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190 { |
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191 iWidgetOrder->StoreL( iWidgetsList.WidgetDataArray() ); |
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192 } |
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193 |
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194 } |
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195 |
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196 // --------------------------------------------------------- |
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197 // CWmWidgetLoaderAo::FindWidgetDataL |
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198 // --------------------------------------------------------- |
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199 // |
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200 CWmWidgetData* CWmWidgetLoaderAo::FindWidgetData( |
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201 CHsContentInfo& aContentInfo ) |
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202 { |
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203 CWmWidgetData* data = NULL; |
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204 for( TInt i=0; i<iWidgetsList.WidgetDataCount() && !data; ++i ) |
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205 { |
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206 if ( iWidgetsList.WidgetData(i).EqualsTo( aContentInfo ) ) |
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207 { |
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208 data = &iWidgetsList.WidgetData(i); |
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209 } |
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210 } |
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211 return data; |
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212 } |
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213 |
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214 // --------------------------------------------------------- |
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215 // CWmWidgetLoaderAo::AddWidgetDataL |
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216 // --------------------------------------------------------- |
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217 // |
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218 void CWmWidgetLoaderAo::AddWidgetDataL( |
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219 CHsContentInfo& aContentInfo ) |
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220 { |
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221 if ( !iWidgetRegistry ) |
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222 { |
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223 iWidgetRegistry = new (ELeave) RWidgetRegistryClientSession(); |
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224 User::LeaveIfError( iWidgetRegistry->Connect() ); |
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225 } |
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226 |
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227 CWmWidgetData* widgetData = CWmWidgetData::NewLC( |
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228 aContentInfo, iWidgetRegistry ); |
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229 widgetData->SetPersistentWidgetOrder( iWidgetOrder ); |
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230 widgetData->SetValid( ETrue ); |
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231 iWidgetsList.AddWidgetDataL( widgetData ); |
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232 CleanupStack::Pop( widgetData ); |
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233 } |
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234 |
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235 // --------------------------------------------------------------------------- |
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236 // CWmWidgetLoaderAo::Cleanup |
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237 // --------------------------------------------------------------------------- |
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238 // |
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239 void CWmWidgetLoaderAo::Cleanup() |
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240 { |
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241 // disconnect widget registry |
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242 if ( iWidgetRegistry ) |
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243 { |
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244 iWidgetRegistry->Disconnect(); |
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245 iWidgetRegistry->Close(); |
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246 delete iWidgetRegistry; |
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247 iWidgetRegistry = NULL; |
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248 } |
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249 |
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250 // delete widget order |
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251 delete iWidgetOrder; |
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252 iWidgetOrder = NULL; |
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253 } |
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254 |
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255 // end of file |
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256 |
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