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1 /* |
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2 * Copyright (c) 2002 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 * Produces objects that implement MLogsModel |
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16 * |
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17 */ |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include "CLogsModel.h" |
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22 #include "MLogsReader.h" |
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23 #include "MLogsEvent.h" |
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24 #include "MLogsStateHolder.h" |
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25 #include "CLogsEventGetter.h" |
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26 #include "CLogsReaderFactory.h" |
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27 #include "CLogsGetEventFactory.h" |
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28 #include "MLogsEventArray.h" |
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29 // CONSTANTS |
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30 |
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31 // ---------------------------------------------------------------------------- |
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32 // CLogsModel::NewL |
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33 // ---------------------------------------------------------------------------- |
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34 // |
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35 CLogsModel* CLogsModel::NewL( |
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36 RFs& aFsSession, |
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37 TLogsModel aModel, |
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38 TLogsEventStrings& aStrings, |
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39 CLogsEngine* aLogsEngineRef ) |
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40 |
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41 { |
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42 CLogsModel* self = new (ELeave) CLogsModel( aFsSession, aModel, aStrings, aLogsEngineRef ); |
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43 CleanupStack::PushL( self ); |
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44 self->ConstructL(); |
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45 CleanupStack::Pop(); |
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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 // CLogsModel::CLogsModel |
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51 // ---------------------------------------------------------------------------- |
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52 // |
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53 CLogsModel::CLogsModel( |
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54 RFs& aFsSession, |
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55 TLogsModel aModel, |
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56 TLogsEventStrings& aStrings, |
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57 CLogsEngine* aLogsEngineRef ) : |
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58 iFsSession( aFsSession ), |
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59 iModel( aModel ), |
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60 iStrings( aStrings ), |
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61 iState( EStateUndefined ), |
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62 iLogsEngineRef( aLogsEngineRef ) |
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63 { |
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64 } |
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65 |
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66 // ---------------------------------------------------------------------------- |
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67 // CLogsModel::ConstructL |
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68 // ---------------------------------------------------------------------------- |
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69 // |
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70 void CLogsModel::ConstructL() |
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71 { |
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72 iEventArray = CLogsGetEventFactory::LogsEventArrayL( iModel, 20 ); |
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73 iWrapper = CLogsEventGetter::NewL(); |
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74 } |
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75 |
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76 // ---------------------------------------------------------------------------- |
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77 // CLogsModel::~CLogsModel |
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78 // ---------------------------------------------------------------------------- |
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79 // |
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80 CLogsModel::~CLogsModel() |
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81 { |
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82 if( iEventArray ) |
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83 { |
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84 iEventArray->Reset(); |
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85 } |
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86 |
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87 delete iEventArray; |
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88 delete iWrapper; |
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89 delete iReader; |
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90 } |
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91 |
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92 // ---------------------------------------------------------------------------- |
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93 // CLogsModel::Delete |
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94 // ---------------------------------------------------------------------------- |
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95 // |
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96 void CLogsModel::Delete( TInt aIndex ) |
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97 { |
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98 iEventArray->Delete( aIndex ); |
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99 } |
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100 |
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101 // ---------------------------------------------------------------------------- |
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102 // CLogsModel::Count |
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103 // ---------------------------------------------------------------------------- |
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104 // |
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105 TInt CLogsModel::Count() |
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106 { |
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107 return iEventArray->Count(); |
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108 } |
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109 |
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110 // ---------------------------------------------------------------------------- |
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111 // CLogsModel::KickStartL |
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112 // ---------------------------------------------------------------------------- |
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113 // |
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114 void CLogsModel::KickStartL( TBool aReset ) |
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115 { |
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116 if( iObserver && iEventArray && aReset ) |
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117 { |
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118 iState = EStateInitializing; //This informs observers that e.g. a complete re-read of recent events is about to begin |
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119 // so that they can e.g. change their view focus settings accordingly |
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120 // (e.g. CLogsRecentListView::StateChangedL ). |
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121 iEventArray->Reset(); //Delete the old rows as it might take too long to read the new correct contents |
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122 iObserver->StateChangedL( this ); |
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123 } |
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124 |
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125 if( iReader ) |
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126 { |
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127 // call ActivateL first, cause KickStartL is called directly from CLogsEngine too |
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128 iReader->ActivateL(); |
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129 iReader->StartL(); |
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130 } |
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131 } |
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132 |
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133 // ---------------------------------------------------------------------------- |
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134 // CLogsModel::At |
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135 // ---------------------------------------------------------------------------- |
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136 // |
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137 const MLogsEventGetter* CLogsModel::At( TInt aIndex ) |
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138 { |
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139 if( aIndex < 0 || aIndex >= Count() ) |
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140 { |
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141 iWrapper->Wrap( NULL ); |
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142 return NULL; |
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143 } |
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144 |
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145 return iWrapper->Wrap(&iEventArray->At( aIndex ) ); //Log events in iEventArray |
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146 } |
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147 |
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148 // ---------------------------------------------------------------------------- |
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149 // CLogsModel::SetObserver |
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150 // ---------------------------------------------------------------------------- |
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151 // |
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152 void CLogsModel::SetObserver( MLogsObserver* aObserver ) |
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153 { |
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154 iObserver = aObserver; |
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155 } |
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156 |
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157 //This function can be called several times without calling DoDeactivate between calls |
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158 // ---------------------------------------------------------------------------- |
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159 // CLogsModel::DoActivateL |
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160 // ---------------------------------------------------------------------------- |
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161 // |
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162 void CLogsModel::DoActivateL( TDoActivate aDoActivate ) |
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163 { |
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164 if( !iReader ) |
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165 { |
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166 TRAPD( err, iReader = CLogsReaderFactory::LogsReaderL( iFsSession, |
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167 *iEventArray, iStrings, iModel, this, iLogsEngineRef ) ); |
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168 if( err == KErrAccessDenied ) |
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169 { |
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170 delete iReader; |
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171 iReader = NULL; |
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172 return; |
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173 } |
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174 User::LeaveIfError(err); |
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175 } |
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176 |
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177 iReader->ActivateL(); //This needs to be done before any other iReader call |
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178 |
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179 //Update list only if refresh requested, otherwise leave as it is |
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180 if( aDoActivate != EActivateOnly ) |
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181 { |
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182 if( iReader->IsDirty() ) |
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183 { |
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184 //ETrue: reset list before reading |
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185 KickStartL( aDoActivate == EResetAndRefresh ? ETrue : EFalse ); |
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186 } |
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187 else if( iReader->IsInterrupted() ) |
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188 { |
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189 iReader->ContinueL(); |
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190 } |
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191 } |
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192 } |
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193 |
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194 // ---------------------------------------------------------------------------- |
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195 // CLogsModel::DoDeactivate |
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196 // ---------------------------------------------------------------------------- |
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197 // |
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198 void CLogsModel::DoDeactivate( |
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199 TClearMissedCalls aClearMissedCalls, |
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200 TDoDeactivate aDisconnectDb ) |
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201 { |
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202 if( iModel == ELogsMissedModel && |
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203 aClearMissedCalls == ENormalOperation ) |
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204 { |
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205 if( iReader ) |
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206 { |
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207 TInt count(iEventArray->Count()); |
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208 for(TInt i = 0; i < count; i++) |
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209 { |
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210 iEventArray->At(i).SetDuplicates(0); |
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211 } |
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212 //We need to clear duplicates from the db too |
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213 TInt err; |
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214 TRAP( err, iReader->ClearDuplicatesL() ); |
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215 } |
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216 } |
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217 |
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218 /************************************************************************************************** |
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219 * This did not help enough for EMSH-6JDFBV, therefore original below still in use. |
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220 //if( aDisconnectDb ) //Needs to be done always, otherwise happened a bit too late when MT call is received. |
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221 { |
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222 //iReader->Stop(); //This seems to be not enough for EMSH-6JDFBV, two rows below work a bit better instead |
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223 iReader->Interrupt(); |
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224 iReader->DeActivate( ); |
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225 } |
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226 **************************************************************************************************/ |
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227 |
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228 //For main model we cannot delete the reader, otherwise the use must wait long for the lines to show up again |
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229 //in the event view. Also we cannot update the view in CLogsEventListView::StateChangedL too frequently when the |
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230 //model is being reread. |
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231 if( iModel == ELogsMainModel ) |
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232 { |
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233 if( iReader ) |
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234 { |
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235 iReader->DeActivate(); |
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236 iReader->Interrupt(); |
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237 } |
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238 } |
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239 else |
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240 { |
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241 if( aDisconnectDb == ECloseDBConnectionAndResetArray || |
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242 aDisconnectDb == ECloseDBConnection ) |
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243 { |
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244 //The rows below stop effectively cpu and I/O consumption in view of EMSH-6JDFBV. However, |
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245 //they also kill user's perceived UI responsiviness so aDisconnectDb should be used sparingly. |
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246 //Because reader may be deleted when reading of db is ongoing, we need also explicitly inform |
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247 //observer that we are finished. |
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248 delete iReader; |
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249 iReader = NULL; |
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250 iState = EStateReaderDeletedOrStopped; |
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251 |
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252 if (aDisconnectDb == ECloseDBConnectionAndResetArray) |
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253 { |
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254 iState = EStateArrayReseted; |
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255 iEventArray->Reset(); |
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256 } |
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257 |
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258 if( iObserver ) |
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259 { |
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260 TInt err; |
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261 TRAP( err, iObserver->StateChangedL( this ) ); |
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262 } |
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263 } |
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264 // Special case, just reset the array. This is needed to avoid flicker of |
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265 // old list since reread of events is done when regaining foreground |
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266 else if (aDisconnectDb == EResetOnlyArray || aDisconnectDb == EResetOnlyArrayWithDirty ) |
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267 { |
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268 iState = EStateArrayReseted; |
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269 iEventArray->Reset(); |
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270 |
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271 if ( aDisconnectDb == EResetOnlyArrayWithDirty ) |
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272 { |
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273 if( iReader ) |
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274 { |
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275 iReader->SetDirty(); |
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276 } |
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277 } |
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278 |
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279 if( iObserver ) |
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280 { |
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281 TInt err; |
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282 TRAP( err, iObserver->StateChangedL( this ) ); |
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283 } |
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284 } |
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285 |
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286 } |
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287 } |
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288 |
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289 // ---------------------------------------------------------------------------- |
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290 // CLogsModel::Reset |
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291 // ---------------------------------------------------------------------------- |
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292 // |
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293 void CLogsModel::Reset() |
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294 { |
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295 iWrapper->Wrap( NULL ); |
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296 } |
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297 |
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298 // ---------------------------------------------------------------------------- |
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299 // CLogsModel::State |
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300 // ---------------------------------------------------------------------------- |
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301 // |
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302 TLogsState CLogsModel::State() const |
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303 { |
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304 return iState; |
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305 } |
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306 |
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307 // ---------------------------------------------------------------------------- |
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308 // CLogsModel::ConfigureL |
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309 // ---------------------------------------------------------------------------- |
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310 // |
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311 void CLogsModel::ConfigureL( const MLogsReaderConfig* aConfig ) |
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312 { |
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313 if( iReader ) |
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314 { |
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315 iReader->Stop(); |
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316 iReader->ConfigureL( aConfig ); |
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317 KickStartL( ETrue ); |
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318 } |
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319 } |
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320 |
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321 // ---------------------------------------------------------------------------- |
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322 // CLogsModel::StateChangedL |
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323 // ---------------------------------------------------------------------------- |
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324 // |
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325 void CLogsModel::StateChangedL( MLogsStateHolder* aHolder ) |
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326 { |
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327 if( aHolder->State() == EStateClearLogFinished ) |
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328 { |
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329 KickStartL( ETrue ); |
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330 } |
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331 |
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332 /* |
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333 if( aHolder->State() == EStateFreeToDelete ) |
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334 { |
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335 delete iReader; |
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336 iReader = NULL; |
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337 } |
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338 else |
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339 */ |
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340 { |
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341 iState = aHolder->State(); |
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342 if( iObserver ) |
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343 { |
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344 iObserver->StateChangedL( this ); |
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345 } |
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346 } |
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347 } |
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348 |
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349 |