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1 /* |
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2 * Copyright (c) 2002-2006 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: CNssDBTagSelectNotifier provides tag select notification to |
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15 * its clients (observers). It itslef receives tag select notification |
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16 * from Recognition Handler. |
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17 * |
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18 */ |
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19 |
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20 |
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21 // includes |
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22 #include "nssvascdbtagselectnotifier.h" |
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23 #include "nssvascoreconstant.h" |
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24 #include <e32property.h> |
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25 |
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26 |
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27 // ================= MEMBER FUNCTIONS ======================= |
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28 |
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29 // --------------------------------------------------------- |
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30 // CNssDBTagSelectNotifier::CNssDBTagSelectNotifier |
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31 // C++ constructor can NOT contain any code that might leave. |
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32 // --------------------------------------------------------- |
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33 // |
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34 CNssDBTagSelectNotifier::CNssDBTagSelectNotifier(): CActive( EPriorityStandard ) |
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35 { |
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36 // Nothing |
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37 } |
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38 |
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39 // --------------------------------------------------------- |
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40 // CNssDBTagSelectNotifier::CNssDBTagSelectNotifier |
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41 // overloaded constructor |
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42 // --------------------------------------------------------- |
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43 // |
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44 CNssDBTagSelectNotifier::CNssDBTagSelectNotifier( CNssVASDatabase* aVasDatabase ): |
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45 CActive( EPriorityStandard ), iVasDatabase( aVasDatabase ) |
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46 { |
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47 // Nothing |
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48 } |
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49 |
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50 // --------------------------------------------------------- |
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51 // CNssDBTagSelectNotifier::ConstructL |
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52 // symbian constructor |
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53 // --------------------------------------------------------- |
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54 // |
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55 void CNssDBTagSelectNotifier::ConstructL() |
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56 { |
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57 iObserverList = new (ELeave) CArrayPtrFlat<MNssDBTagSelectNotifierClient>(1); |
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58 |
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59 // Define P&S properties |
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60 TInt err = RProperty::Define( KSINDUID, EVoiceTagSelectionTagId, RProperty::EInt ); |
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61 if ( err != KErrAlreadyExists ) |
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62 { |
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63 User::LeaveIfError( err ); |
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64 } |
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65 err = RProperty::Define( KSINDUID, EVoiceTagSelectionContextId, RProperty::EInt ); |
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66 if ( err != KErrAlreadyExists ) |
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67 { |
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68 User::LeaveIfError( err ); |
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69 } |
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70 |
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71 User::LeaveIfError( iProperty.Attach( KSINDUID, EVoiceTagSelectionTagId ) ); |
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72 CActiveScheduler::Add( this ); |
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73 // Subsrcibe for change notifications |
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74 iProperty.Subscribe( iStatus ); |
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75 SetActive(); |
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76 } |
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77 |
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78 // --------------------------------------------------------- |
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79 // CNssDBTagSelectNotifier::NewL |
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80 // 2 phase Construction |
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81 // --------------------------------------------------------- |
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82 // |
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83 CNssDBTagSelectNotifier* CNssDBTagSelectNotifier::NewL( CNssVASDatabase* aVasDatabase ) |
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84 { |
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85 CNssDBTagSelectNotifier* self = NewLC( aVasDatabase ); |
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86 CleanupStack::Pop( self ); |
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87 return ( self ); |
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88 } |
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89 |
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90 // --------------------------------------------------------- |
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91 // CNssDBTagSelectNotifier::NewLC |
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92 // 2 phase Construction |
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93 // --------------------------------------------------------- |
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94 // |
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95 CNssDBTagSelectNotifier* CNssDBTagSelectNotifier::NewLC( CNssVASDatabase* aVasDatabase ) |
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96 { |
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97 CNssDBTagSelectNotifier* self = new ( ELeave )CNssDBTagSelectNotifier( aVasDatabase ); |
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98 CleanupStack::PushL( self ); |
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99 self->ConstructL(); |
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100 return ( self ); |
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101 } |
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102 |
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103 // --------------------------------------------------------- |
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104 // CNssDBTagSelectNotifier::~CNssDBTagSelectNotifier |
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105 // destructor |
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106 // --------------------------------------------------------- |
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107 // |
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108 CNssDBTagSelectNotifier::~CNssDBTagSelectNotifier() |
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109 { |
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110 if ( iObserverList ) |
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111 { |
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112 iObserverList->ResetAndDestroy(); |
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113 delete iObserverList; |
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114 iObserverList = NULL; |
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115 } |
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116 Cancel(); |
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117 iProperty.Close(); |
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118 } |
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119 |
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120 // --------------------------------------------------------- |
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121 // CNssDBTagSelectNotifier::RegisterForNotification |
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122 // registers a client for notification |
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123 // --------------------------------------------------------- |
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124 // |
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125 TInt CNssDBTagSelectNotifier::RegisterForNotification( MNssDBTagSelectNotifierClient* aObserver ) |
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126 { |
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127 TRAPD( err, iObserverList->AppendL( aObserver ) ); |
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128 return err; |
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129 } |
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130 |
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131 // --------------------------------------------------------- |
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132 // CNssDBTagSelectNotifier::Deregister |
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133 // Deregister a client from notification |
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134 // --------------------------------------------------------- |
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135 // |
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136 TInt CNssDBTagSelectNotifier::Deregister( MNssDBTagSelectNotifierClient* aObserver ) |
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137 { |
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138 TBool ret = EFalse; |
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139 if ( iObserverList ) |
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140 { |
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141 for ( TInt i = 0;i < iObserverList->Count(); i++ ) |
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142 if ( (*iObserverList)[i] == aObserver ) |
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143 { |
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144 iObserverList->Delete( i ); |
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145 ret = ETrue; |
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146 } |
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147 } |
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148 if ( ret ) |
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149 { |
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150 iObserverList->Compress(); |
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151 } |
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152 return (ret ? KErrNone : KErrGeneral); |
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153 } |
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154 |
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155 // --------------------------------------------------------- |
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156 // CNssDBTagSelectNotifier::HandleSelection |
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157 // calls all its clients, when notified of a tag slection. |
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158 // --------------------------------------------------------- |
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159 // |
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160 void CNssDBTagSelectNotifier::HandleSelection( CNssTag* aTag ) |
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161 { |
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162 CNssContext* context = ( CNssContext* ) aTag->Context(); |
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163 RProperty::Set( KSINDUID, EVoiceTagSelectionContextId, context->ContextId() ); |
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164 RProperty::Set( KSINDUID, EVoiceTagSelectionTagId, aTag->TagId() ); |
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165 } |
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166 |
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167 // --------------------------------------------------------- |
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168 // CNssDBTagSelectNotifier::DoHandleSelectionCallback |
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169 // Forwards the tag selection callback |
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170 // --------------------------------------------------------- |
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171 // |
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172 void CNssDBTagSelectNotifier::DoHandleSelectionCallback( TInt aTagId, TInt aContextId ) |
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173 { |
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174 if ( iObserverList->Count() ) |
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175 { |
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176 // Go through all observers that have been registered to this instance |
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177 for ( TInt i = 0; i < iObserverList->Count(); i++ ) |
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178 { |
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179 // Find the tags based on ID |
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180 MNssTagListArray* array = iVasDatabase->GetTag( aTagId ); |
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181 |
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182 for ( TInt j = 0; j < array->Count(); j++ ) |
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183 { |
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184 CNssTag* tag = ( CNssTag* )array->At( j ); |
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185 CNssContext* context = ( CNssContext* ) tag->Context(); |
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186 // Check that context IDs match |
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187 if ( context->ContextId() == aContextId ) |
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188 { |
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189 // Do the callback |
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190 (*iObserverList)[i]->HandleSelection( tag ); |
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191 } |
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192 } |
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193 |
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194 array->ResetAndDestroy(); |
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195 delete array; |
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196 } |
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197 } |
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198 } |
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199 |
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200 // --------------------------------------------------------- |
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201 // CNssDBTagSelectNotifier::DoCancel |
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202 // From CActive |
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203 // --------------------------------------------------------- |
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204 // |
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205 void CNssDBTagSelectNotifier::DoCancel() |
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206 { |
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207 iProperty.Cancel(); |
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208 } |
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209 |
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210 // --------------------------------------------------------- |
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211 // CNssDBTagSelectNotifier::RunL |
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212 // From CActive |
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213 // --------------------------------------------------------- |
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214 // |
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215 void CNssDBTagSelectNotifier::RunL() |
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216 { |
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217 // resubscribe before processing new value to prevent missing updates |
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218 iProperty.Subscribe( iStatus ); |
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219 SetActive(); |
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220 |
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221 // property updated, get new value |
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222 iProperty.Get( KSINDUID, EVoiceTagSelectionTagId, iTagId ); |
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223 iProperty.Get( KSINDUID, EVoiceTagSelectionContextId, iContextId ); |
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224 DoHandleSelectionCallback( iTagId, iContextId ); |
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225 } |
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226 |
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227 // End of file |