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1 /* |
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2 * Copyright (c) 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: ?Description |
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15 * |
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16 */ |
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17 |
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18 #include "conversationchangehandler.h" |
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19 // SYSTEM INCLUDES |
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20 #include <ccsconversationentry.h> |
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21 |
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22 // USER INCLUDES |
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23 #include "conversationsengine.h" |
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24 #include "conversationsengine_p.h" |
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25 #include "conversationsmodel.h" |
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26 |
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27 const TInt WindowSize = 7; |
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28 |
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29 // --------------------------------------------------------------------------- |
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30 // Constructor |
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31 // --------------------------------------------------------------------------- |
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32 // |
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33 ConversationsChangeHandler::ConversationsChangeHandler( |
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34 ConversationsEnginePrivate* convEnginePrivate, |
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35 ConversationsModel* conversationsModel) : |
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36 CActive(EPriorityStandard), |
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37 mCurrentState(EInit), |
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38 mFirstWindowCached(EFalse), |
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39 mCurrentIndex(-1), |
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40 mConversationsModel(conversationsModel), |
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41 mConvEnginePrivate(convEnginePrivate) |
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42 |
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43 { |
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44 CActiveScheduler::Add(this); |
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45 } |
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46 |
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47 // --------------------------------------------------------------------------- |
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48 // Destructor |
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49 // --------------------------------------------------------------------------- |
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50 // |
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51 ConversationsChangeHandler::~ConversationsChangeHandler() |
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52 { |
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53 mConversationEntryList.ResetAndDestroy(); |
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54 // Cancel the active object |
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55 Cancel(); |
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56 } |
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57 |
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58 // --------------------------------------------------------------------------- |
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59 // This is for handling GetConversation results asynchronusly |
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60 // from the server. |
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61 // --------------------------------------------------------------------------- |
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62 // |
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63 void ConversationsChangeHandler::ConversationsL(RPointerArray< |
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64 CCsConversationEntry>& aConversationEntryList, TInt& aTotalCount) |
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65 { |
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66 |
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67 mTotalCount = aTotalCount; |
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68 |
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69 for (TInt i = 0; i < aConversationEntryList.Count(); ++i) |
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70 { |
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71 CCsConversationEntry *entry = aConversationEntryList[i]->CloneL(); |
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72 mConversationEntryList.AppendL(entry); |
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73 } |
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74 if (aConversationEntryList.Count() > 0) |
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75 { |
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76 mCurrentState = EInitialCache; |
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77 IssueRequest(); |
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78 } |
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79 else |
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80 { |
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81 //This is done for safety |
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82 mConvEnginePrivate->registerForConversationUpdatesL(); |
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83 mCurrentState = EListenToEvents; |
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84 } |
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85 } |
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86 // --------------------------------------------------------------------------- |
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87 // This is for resetting the values before initiating a request |
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88 // for fetching entries for a new conversation |
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89 // --------------------------------------------------------------------------- |
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90 // |
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91 void ConversationsChangeHandler::ResetValuesForNewConversation() |
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92 { |
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93 mConvEnginePrivate->registerForConversationUpdatesL(); |
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94 mCurrentIndex = 0; |
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95 mFirstWindowCached = EFalse; |
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96 mConversationEntryList.ResetAndDestroy(); |
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97 |
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98 |
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99 } |
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100 |
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101 // --------------------------------------------------------------------------- |
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102 // Handling addition of new conversation entry from the server |
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103 // --------------------------------------------------------------------------- |
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104 // |
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105 void ConversationsChangeHandler::AddConversation( |
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106 const CCsConversationEntry& aConvEntry) |
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107 { |
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108 mConversationsModel->addRow(aConvEntry, true); |
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109 ConversationsEngine::instance()->emitConversationModelUpdated(); |
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110 } |
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111 |
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112 // --------------------------------------------------------------------------- |
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113 // Handling modification of existing conversation entry from the server |
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114 // --------------------------------------------------------------------------- |
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115 // |
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116 void ConversationsChangeHandler::ModifyConversation( |
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117 const CCsConversationEntry& aConvEntry) |
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118 { |
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119 mConversationsModel->addRow(aConvEntry, true); |
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120 } |
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121 |
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122 // --------------------------------------------------------------------------- |
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123 // Handling deletion of conversation entry from the server |
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124 // --------------------------------------------------------------------------- |
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125 // |
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126 void ConversationsChangeHandler::DeleteConversation( |
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127 const CCsConversationEntry& aConvEntry) |
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128 { |
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129 mConversationsModel->deleteRow(aConvEntry.EntryId()); |
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130 |
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131 //check if the CV model row count has become zero |
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132 // then needs to emit signal |
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133 if (mConversationsModel->rowCount() == 0) |
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134 { |
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135 mConversationsModel->emitConversationViewEmpty(); |
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136 } |
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137 } |
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138 |
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139 //----------------------------------------------------------------------- |
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140 // This is for handling modify conversation event asynchronusly from the server |
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141 //----------------------------------------------------------------------- |
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142 // |
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143 void ConversationsChangeHandler::RefreshConversation() |
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144 { |
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145 } |
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146 |
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147 // --------------------------------------------------------------------------- |
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148 // RunL |
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149 // --------------------------------------------------------------------------- |
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150 // |
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151 void ConversationsChangeHandler::RunL() |
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152 { |
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153 if (iStatus != KErrNone) |
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154 { |
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155 return; |
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156 } |
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157 //process |
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158 switch (mCurrentState) |
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159 { |
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160 case EInitialCache: |
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161 HandleConversationsL(); |
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162 break; |
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163 case EFetchMoreConversations: |
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164 FetchRemainingConversations(mConversationEntryList.Count()); |
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165 break; |
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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 // DoCancel |
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171 // --------------------------------------------------------------------------- |
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172 // |
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173 void ConversationsChangeHandler::DoCancel() |
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174 { |
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175 mCurrentState = EListenToEvents; |
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176 } |
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177 |
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178 // --------------------------------------------------------------------------- |
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179 // Make the active object alive. |
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180 // --------------------------------------------------------------------------- |
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181 // |
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182 void ConversationsChangeHandler::IssueRequest() |
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183 { |
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184 if (!IsActive()) |
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185 { |
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186 iStatus = KRequestPending; |
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187 TRequestStatus* status = &iStatus; |
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188 SetActive(); |
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189 User::RequestComplete(status, KErrNone); |
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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 // Handles Conversations received from server and updates into model |
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195 // --------------------------------------------------------------------------- |
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196 // |
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197 void ConversationsChangeHandler::HandleConversationsL() |
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198 { |
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199 for (int i = 0; i < WindowSize; ++i) |
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200 { |
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201 if (mCurrentIndex < mConversationEntryList.Count()) |
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202 { |
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203 mConversationsModel->addRow( |
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204 * (mConversationEntryList[mCurrentIndex])); |
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205 mCurrentIndex++; |
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206 } |
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207 else |
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208 { |
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209 break; |
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210 } |
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211 } |
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212 if (mCurrentIndex < mConversationEntryList.Count()) |
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213 { |
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214 if (!mFirstWindowCached) |
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215 { |
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216 ConversationsEngine::instance()->emitConversationModelPopulated(); |
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217 mFirstWindowCached = ETrue; |
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218 return; |
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219 } |
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220 IssueRequest(); |
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221 return; |
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222 } |
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223 //if more entries have to be fetched , issue a request, |
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224 // else listen for events. |
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225 if(mCurrentIndex < mTotalCount ) |
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226 { |
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227 //fetch more |
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228 mCurrentState = EFetchMoreConversations; |
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229 IssueRequest(); |
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230 } |
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231 else |
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232 { |
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233 if (!mFirstWindowCached) |
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234 { |
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235 ConversationsEngine::instance()->emitConversationModelPopulated(); |
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236 mFirstWindowCached = ETrue; |
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237 } |
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238 mConversationEntryList.ResetAndDestroy(); |
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239 mCurrentState = EListenToEvents; |
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240 } |
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241 } |
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242 |
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243 // --------------------------------------------------------------------------- |
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244 // Fetches remaining conversations from the server |
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245 // --------------------------------------------------------------------------- |
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246 // |
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247 void ConversationsChangeHandler::FetchRemainingConversations(TInt aTotalCount) |
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248 { |
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249 mConvEnginePrivate->fetchRemainingConversations(aTotalCount); |
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250 |
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251 } |
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252 // --------------------------------------------------------------------------- |
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253 // Starts fetching remaining conversations |
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254 // --------------------------------------------------------------------------- |
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255 // |
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256 void ConversationsChangeHandler::restartHandleConversations() |
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257 { |
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258 IssueRequest(); |
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259 } |
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260 |
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261 //EOF |