1 /* |
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2 * Copyright (c) 2003 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: This module contains the implementation of RCbsTopicCollection class |
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15 member functions. |
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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 |
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22 #include "CbsServerConstants.h" |
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23 #include "RCbs.h" |
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24 #include "RCbsTopicCollection.h" |
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25 |
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26 // ================= MEMBER FUNCTIONS ======================= |
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27 |
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28 // ----------------------------------------------------------------------------- |
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29 // RCbsTopicCollection::RCbsTopicCollection |
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30 // C++ default constructor can NOT contain any code, that |
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31 // might leave. |
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32 // ----------------------------------------------------------------------------- |
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33 // |
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34 RCbsTopicCollection::RCbsTopicCollection() |
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35 : iIterator( 0 ) |
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36 { |
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37 } |
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38 |
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39 // ----------------------------------------------------------------------------- |
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40 // RCbsTopicCollection::Open |
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41 // Creates a subsession to the server. |
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42 // (other items were commented in a header). |
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43 // ----------------------------------------------------------------------------- |
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44 // |
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45 TInt RCbsTopicCollection::Open( |
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46 RCbs& aServer ) |
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47 { |
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48 // Open the subsession. |
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49 const TIpcArgs args( TIpcArgs::ENothing ); |
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50 return CreateSubSession( aServer, ECbsCreateTopicCollectionSubsession, args ); |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // RCbsTopicCollection::Close |
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55 // Closes a subsession to the server. |
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56 // (other items were commented in a header). |
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57 // ----------------------------------------------------------------------------- |
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58 // |
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59 TInt RCbsTopicCollection::Close() |
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60 { |
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61 // Close the subsession |
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62 RSubSessionBase::CloseSubSession( ECbsCloseTopicCollectionSubsession ); |
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63 return KErrNone; |
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64 } |
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65 |
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66 // ----------------------------------------------------------------------------- |
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67 // RCbsTopicCollection::GetTopicCount |
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68 // Returns the total amount of topic information the topic collection |
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69 // contains. |
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70 // (other items were commented in a header). |
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71 // ----------------------------------------------------------------------------- |
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72 // |
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73 void RCbsTopicCollection::GetTopicCount( |
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74 TInt& aCount ) |
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75 { |
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76 // Get the topic count from the server |
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77 TPckgBuf< TInt > pckgCount; |
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78 const TIpcArgs args( &pckgCount ); |
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79 SendReceive( ECbsGetTopicInfoCount, args ); |
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80 aCount = pckgCount(); |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // RCbsTopicCollection::GetTopicInfo |
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85 // Returns a topic information structure. |
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86 // (other items were commented in a header). |
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87 // ----------------------------------------------------------------------------- |
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88 // |
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89 TInt RCbsTopicCollection::GetTopicInfo( |
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90 TInt aIndex, |
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91 TCbsTopicInfo& aInfo ) |
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92 { |
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93 // Get topic information from the server |
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94 TPckgBuf< TCbsTopicInfo > pckgInfo( aInfo ); |
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95 const TIpcArgs args( aIndex, &pckgInfo ); |
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96 TInt result( SendReceive( ECbsGetTopicInfo, args ) ); |
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97 |
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98 if ( result == KErrNone ) |
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99 { |
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100 aInfo = pckgInfo(); |
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101 } |
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102 return result; |
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103 } |
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104 |
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105 // ----------------------------------------------------------------------------- |
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106 // RCbsTopicCollection::NotifyOnChange |
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107 // Notifies the client next time when topic collection changes. |
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108 // (other items were commented in a header). |
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109 // ----------------------------------------------------------------------------- |
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110 // |
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111 void RCbsTopicCollection::NotifyOnChange( |
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112 TRequestStatus& aStatus ) |
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113 { |
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114 // Send notification on change |
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115 const TIpcArgs args( TIpcArgs::ENothing ); |
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116 SendReceive( ECbsNotifyOnChange, args, aStatus ); |
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117 } |
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118 |
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119 // ----------------------------------------------------------------------------- |
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120 // RCbsTopicCollection::NotifyOnChangeCancel |
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121 // Cancels the pending request to notify. |
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122 // (other items were commented in a header). |
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123 // ----------------------------------------------------------------------------- |
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124 // |
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125 void RCbsTopicCollection::NotifyOnChangeCancel() |
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126 { |
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127 // Cancel pending notification request. |
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128 const TIpcArgs args( TIpcArgs::ENothing ); |
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129 SendReceive( ECbsNotifyOnChangeCancel, args ); |
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130 } |
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131 |
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132 // ----------------------------------------------------------------------------- |
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133 // RCbsTopicCollection::Start |
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134 // Interface for topic collection browsing. Resets the iterator. |
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135 // (other items were commented in a header). |
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136 // ----------------------------------------------------------------------------- |
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137 // |
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138 void RCbsTopicCollection::Start() |
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139 { |
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140 iIterator = 0; |
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141 } |
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142 |
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143 // ----------------------------------------------------------------------------- |
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144 // RCbsTopicCollection::HasNextTopic |
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145 // Returns ETrue, if the topic collection has topic identities |
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146 // unaccessed with NextTopic(). |
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147 // (other items were commented in a header). |
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148 // ----------------------------------------------------------------------------- |
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149 // |
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150 TBool RCbsTopicCollection::HasNextTopic() |
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151 { |
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152 TInt count( 0 ); |
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153 TInt result( KErrNone ); |
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154 TBool inList( EFalse ); |
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155 |
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156 GetTopicCount( count ); |
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157 for ( ; iIterator < count; iIterator++ ) |
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158 { |
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159 // Check if the current topic is in the topic list. |
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160 result = TopicInList( iIterator, inList ); |
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161 if ( result != KErrNone ) |
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162 { |
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163 return EFalse; |
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164 } |
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165 else if ( !inList ) |
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166 { |
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167 return ETrue; // this topic is not in the list; |
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168 } |
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169 } |
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170 |
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171 return EFalse; |
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172 } |
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173 |
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174 // ----------------------------------------------------------------------------- |
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175 // RCbsTopicCollection::NextTopic |
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176 // Returns the next topic identity if one exists. |
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177 // (other items were commented in a header). |
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178 // ----------------------------------------------------------------------------- |
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179 // |
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180 TInt RCbsTopicCollection::NextTopic( |
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181 TCbsTopicInfo& aInfo ) |
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182 { |
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183 // iIterator points to the next unlisted topic: return the topic |
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184 // and error code. |
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185 TInt result( KErrNone ); |
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186 result = GetTopicInfo( iIterator, aInfo ); |
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187 if ( result == KErrNone ) |
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188 { |
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189 iIterator++; // advance to the next topic |
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190 } |
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191 return result; |
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192 } |
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193 |
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194 // ----------------------------------------------------------------------------- |
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195 // RCbsTopicCollection::TopicInList |
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196 // Returns information whether the topic was in topic list. |
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197 // (other items were commented in a header). |
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198 // ----------------------------------------------------------------------------- |
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199 // |
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200 TInt RCbsTopicCollection::TopicInList( |
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201 TInt aIndex, |
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202 TBool& aInList ) |
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203 { |
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204 // value returned by the server gets stored here |
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205 TPckgBuf< TBool > pckgInList; |
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206 const TIpcArgs args( aIndex, &pckgInList ); |
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207 |
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208 TInt result = SendReceive( ECbsTopicInList, args ); |
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209 if ( result == KErrNone ) |
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210 { |
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211 aInList = pckgInList(); |
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212 } |
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213 |
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214 return result; |
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215 } |
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216 |
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217 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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218 |
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219 // End of File |
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