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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 #include <avkon.rsg> // avkon resources |
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31 #include <barsread.h> // TResourceReader |
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32 |
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33 // --------------------------------------------------------------------------- |
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34 // CWmWidgetLoaderAo::NewL |
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35 // --------------------------------------------------------------------------- |
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36 // |
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37 CWmWidgetLoaderAo* CWmWidgetLoaderAo::NewL( |
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38 CWmPlugin& aWmPlugin, |
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39 CWmListBox& aTargetList ) |
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40 { |
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41 CWmWidgetLoaderAo* self = new (ELeave) CWmWidgetLoaderAo( |
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42 aWmPlugin, aTargetList ); |
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43 CleanupStack::PushL( self ); |
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44 self->ConstructL(); |
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45 CleanupStack::Pop( self ); |
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46 return self; |
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47 } |
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48 |
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49 // --------------------------------------------------------------------------- |
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50 // CWmWidgetLoaderAo::NewL |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 CWmWidgetLoaderAo::CWmWidgetLoaderAo( |
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54 CWmPlugin& aWmPlugin, |
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55 CWmListBox& aTargetList ) |
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56 : CAsyncOneShot( EPriorityStandard ) |
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57 , iWmPlugin( aWmPlugin ) |
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58 , iWidgetsList( aTargetList ) |
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59 { |
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60 iWidgetRegistry = NULL; |
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61 iWidgetOrder = NULL; |
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62 } |
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63 |
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64 // --------------------------------------------------------------------------- |
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65 // CWmWidgetLoaderAo::ConstructL |
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66 // --------------------------------------------------------------------------- |
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67 // |
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68 void CWmWidgetLoaderAo::ConstructL() |
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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 // CWmWidgetLoaderAo::~CWmWidgetLoaderAo |
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74 // --------------------------------------------------------------------------- |
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75 // |
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76 CWmWidgetLoaderAo::~CWmWidgetLoaderAo() |
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77 { |
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78 // cancel ongoing operation |
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79 Cancel(); |
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80 |
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81 // cleanup run data |
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82 Cleanup(); |
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83 |
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84 } |
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85 |
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86 // --------------------------------------------------------------------------- |
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87 // CWmWidgetLoaderAo::StartLoading |
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88 // --------------------------------------------------------------------------- |
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89 // |
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90 void CWmWidgetLoaderAo::StartLoading() |
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91 { |
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92 if ( IsActive() ) |
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93 { |
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94 // cancel ongoing process |
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95 Cancel(); |
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96 } |
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97 Call(); |
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98 } |
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99 |
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100 // --------------------------------------------------------------------------- |
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101 // CWmWidgetLoaderAo::RunL |
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102 // --------------------------------------------------------------------------- |
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103 // |
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104 void CWmWidgetLoaderAo::RunL() |
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105 { |
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106 DoLoadWidgetsL(); |
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107 Cleanup(); |
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108 } |
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109 |
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110 // --------------------------------------------------------------------------- |
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111 // CWmWidgetLoaderAo::RunError |
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112 // --------------------------------------------------------------------------- |
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113 // |
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114 TInt CWmWidgetLoaderAo::RunError( TInt /*aError*/ ) |
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115 { |
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116 Cleanup(); |
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117 return KErrNone; |
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118 } |
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119 |
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120 // --------------------------------------------------------- |
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121 // CWmWidgetLoaderAo::DoLoadWidgetsL |
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122 // --------------------------------------------------------- |
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123 // |
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124 void CWmWidgetLoaderAo::DoLoadWidgetsL() |
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125 { |
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126 // 1. mark all the existing widgets initially non-valid |
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127 for( TInt i=0; i<iWidgetsList.WidgetDataCount(); ++i ) |
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128 iWidgetsList.WidgetData(i).SetValid( EFalse ); |
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129 |
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130 // 2. load the widgets array |
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131 MHsContentController& controller = iWmPlugin.ContentController(); |
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132 CHsContentInfoArray* contentInfoArray = CHsContentInfoArray::NewL(); |
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133 CleanupStack::PushL( contentInfoArray ); |
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134 controller.WidgetListL( *contentInfoArray ); |
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135 |
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136 // 3. load the widget order |
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137 iWidgetOrder = CWmPersistentWidgetOrder::NewL( iWmPlugin.FileServer() ); |
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138 TRAPD( loadError, iWidgetOrder->LoadL() ); |
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139 |
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140 // 4. loop through the content array and compare it against the existing |
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141 // widget data. |
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142 TInt widgetsAdded = 0; |
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143 TInt widgetsChanged = 0; |
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144 while( contentInfoArray->Array().Count() > 0 ) |
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145 { |
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146 CHsContentInfo* contentInfo = contentInfoArray->Array()[0]; |
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147 contentInfoArray->Array().Remove( 0 ); |
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148 |
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149 // check if this widget exists. |
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150 // if it does, keep the existing one |
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151 // if it does not, add it |
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152 CWmWidgetData* existingData = FindWidgetData( *contentInfo ); |
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153 if ( existingData ) |
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154 { |
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155 // update existing widget data |
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156 existingData->SetValid( ETrue ); |
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157 if ( existingData->ReplaceContentInfoL( contentInfo ) ) |
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158 { |
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159 ++widgetsChanged; |
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160 } |
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161 } |
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162 else |
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163 { |
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164 // add a new widget data |
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165 AddWidgetDataL( contentInfo ); |
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166 ++widgetsAdded; |
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167 } |
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168 } |
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169 |
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170 // 5: finally, remove all UI widgets that during the loading process were |
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171 // NOT marked as VALID. those widgets do not exist anymore. |
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172 TInt widgetsRemoved = 0; |
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173 for( TInt i=0; i<iWidgetsList.WidgetDataCount(); i++ ) |
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174 { |
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175 if( !iWidgetsList.WidgetData(i).IsValid() ) |
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176 { |
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177 iWidgetsList.RemoveWidgetData( i ); |
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178 ++widgetsRemoved; |
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179 } |
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180 } |
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181 if ( widgetsRemoved > 0 ) |
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182 { |
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183 iWidgetsList.DrawDeferred(); |
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184 } |
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185 |
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186 // 6: cleanup |
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187 CleanupStack::PopAndDestroy( contentInfoArray ); |
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188 |
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189 // 7. check list empty condition |
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190 if ( iWidgetsList.WidgetDataCount() == 0 ) |
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191 { |
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192 TResourceReader rr; |
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193 CEikonEnv::Static()->CreateResourceReaderLC( |
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194 rr, R_AVKON_LISTBOX_DEFAULT_EMPTY_TEXT ); |
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195 TPtrC empty= rr.ReadTPtrC(); |
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196 iWidgetsList.View()->SetListEmptyTextL( empty ); |
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197 CleanupStack::PopAndDestroy(); |
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198 iWidgetsList.DrawDeferred(); |
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199 } |
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200 |
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201 // 8. store list order if necessary |
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202 if ( loadError != KErrNone || widgetsAdded > 0 || widgetsRemoved > 0 ) |
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203 { |
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204 iWidgetOrder->StoreL( iWidgetsList.WidgetDataArray() ); |
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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 // --------------------------------------------------------- |
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210 // CWmWidgetLoaderAo::FindWidgetDataL |
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211 // --------------------------------------------------------- |
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212 // |
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213 CWmWidgetData* CWmWidgetLoaderAo::FindWidgetData( |
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214 CHsContentInfo& aContentInfo ) |
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215 { |
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216 CWmWidgetData* data = NULL; |
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217 for( TInt i=0; i<iWidgetsList.WidgetDataCount() && !data; ++i ) |
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218 { |
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219 if ( iWidgetsList.WidgetData(i).EqualsTo( aContentInfo ) ) |
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220 { |
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221 data = &iWidgetsList.WidgetData(i); |
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222 } |
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223 } |
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224 return data; |
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225 } |
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226 |
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227 // --------------------------------------------------------- |
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228 // CWmWidgetLoaderAo::AddWidgetDataL |
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229 // --------------------------------------------------------- |
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230 // |
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231 void CWmWidgetLoaderAo::AddWidgetDataL( |
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232 CHsContentInfo* aContentInfo ) |
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233 { |
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234 CleanupStack::PushL( aContentInfo ); |
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235 if ( !iWidgetRegistry ) |
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236 { |
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237 iWidgetRegistry = new (ELeave) RWidgetRegistryClientSession(); |
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238 User::LeaveIfError( iWidgetRegistry->Connect() ); |
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239 } |
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240 CleanupStack::Pop( aContentInfo ); |
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241 |
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242 CWmWidgetData* widgetData = CWmWidgetData::NewLC( |
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243 aContentInfo, iWidgetRegistry ); |
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244 widgetData->SetPersistentWidgetOrder( iWidgetOrder ); |
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245 widgetData->SetValid( ETrue ); |
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246 iWidgetsList.AddWidgetDataL( widgetData ); |
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247 CleanupStack::Pop( widgetData ); |
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248 } |
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249 |
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250 // --------------------------------------------------------------------------- |
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251 // CWmWidgetLoaderAo::Cleanup |
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252 // --------------------------------------------------------------------------- |
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253 // |
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254 void CWmWidgetLoaderAo::Cleanup() |
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255 { |
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256 // disconnect widget registry |
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257 if ( iWidgetRegistry ) |
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258 { |
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259 iWidgetRegistry->Disconnect(); |
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260 iWidgetRegistry->Close(); |
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261 delete iWidgetRegistry; |
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262 iWidgetRegistry = NULL; |
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263 } |
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264 |
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265 // delete widget order |
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266 delete iWidgetOrder; |
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267 iWidgetOrder = NULL; |
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268 } |
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269 |
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270 // end of file |
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271 |