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1 /* |
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2 * Copyright (c) 2004-2007 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: Observer for FMRadio property values |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "fmradiopropertyobserver.h" |
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20 |
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21 // ============================ MEMBER FUNCTIONS =============================== |
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22 |
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23 // ----------------------------------------------------------------------------- |
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24 // C++ default constructor can NOT contain any code, that might leave. |
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25 // ----------------------------------------------------------------------------- |
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26 // |
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27 CFMRadioPropertyObserver::CFMRadioPropertyObserver(MFMRadioPropertyChangeObserver& aObserver, const TUid& aCategory, const TUint aKey, const TFMRadioPropertyType aPropertyType) |
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28 : CActive( CActive::EPriorityStandard ), |
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29 iObserver( aObserver ), |
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30 iCategory( aCategory ), |
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31 iKey( aKey ), |
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32 iPropertyType( aPropertyType ) |
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33 { |
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34 } |
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35 |
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36 // ----------------------------------------------------------------------------- |
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37 // Symbian 2nd phase constructor can leave. |
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38 // ----------------------------------------------------------------------------- |
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39 // |
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40 void CFMRadioPropertyObserver::ConstructL() |
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41 { |
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42 switch (iPropertyType) |
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43 { |
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44 case EFMRadioPropertyInt: |
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45 { |
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46 break; |
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47 } |
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48 case EFMRadioPropertyByteArray: |
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49 { |
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50 iValueByteArray = HBufC8::NewL( RProperty::KMaxPropertySize ); |
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51 break; |
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52 } |
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53 case EFMRadioPropertyText: |
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54 { |
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55 // Max size in bytes, length is size / 2 |
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56 iValueText = HBufC::NewL( RProperty::KMaxPropertySize / 2 ); |
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57 break; |
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58 } |
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59 default: |
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60 { |
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61 break; |
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62 } |
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63 } |
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64 |
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65 User::LeaveIfError( iProperty.Attach( iCategory, iKey ) ); |
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66 CActiveScheduler::Add( this ); |
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67 } |
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68 |
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69 // ----------------------------------------------------------------------------- |
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70 // Two-phased constructor. |
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71 // ----------------------------------------------------------------------------- |
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72 // |
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73 CFMRadioPropertyObserver* CFMRadioPropertyObserver::NewL( MFMRadioPropertyChangeObserver& aObserver, |
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74 const TUid& aCategory, |
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75 const TUint aKey, |
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76 const TFMRadioPropertyType aPropertyType ) |
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77 { |
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78 CFMRadioPropertyObserver* self = NewLC( aObserver, |
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79 aCategory, |
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80 aKey, |
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81 aPropertyType ); |
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82 CleanupStack::Pop( self ); |
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83 return self; |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // Two-phased constructor. |
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88 // ----------------------------------------------------------------------------- |
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89 // |
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90 CFMRadioPropertyObserver* CFMRadioPropertyObserver::NewLC( MFMRadioPropertyChangeObserver& aObserver, |
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91 const TUid& aCategory, |
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92 const TUint aKey, |
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93 const TFMRadioPropertyType aPropertyType ) |
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94 { |
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95 CFMRadioPropertyObserver* self = new( ELeave )CFMRadioPropertyObserver( aObserver, |
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96 aCategory, |
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97 aKey, |
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98 aPropertyType ); |
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99 CleanupStack::PushL( self ); |
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100 self->ConstructL(); |
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101 return self; |
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102 } |
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103 |
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104 // ----------------------------------------------------------------------------- |
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105 // Destructor |
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106 // ----------------------------------------------------------------------------- |
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107 // |
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108 CFMRadioPropertyObserver::~CFMRadioPropertyObserver() |
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109 { |
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110 Cancel(); |
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111 iProperty.Close(); |
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112 delete iValueByteArray; |
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113 delete iValueText; |
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114 } |
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115 |
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116 // --------------------------------------------------------------------------- |
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117 // Subscribes to a property and reads the value, if not already active. |
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118 // --------------------------------------------------------------------------- |
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119 // |
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120 void CFMRadioPropertyObserver::ActivateL() |
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121 { |
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122 if ( !IsActive() ) |
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123 { |
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124 RunL(); |
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125 } |
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126 } |
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127 |
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128 // ----------------------------------------------------------------------------- |
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129 // CFMRadioPropertyObserver::RunL |
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130 // ----------------------------------------------------------------------------- |
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131 // |
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132 void CFMRadioPropertyObserver::RunL() |
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133 { |
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134 iProperty.Subscribe( iStatus ); |
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135 SetActive(); |
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136 |
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137 TInt err(KErrNone); |
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138 |
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139 switch (iPropertyType) |
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140 { |
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141 case EFMRadioPropertyInt: |
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142 { |
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143 err = iProperty.Get( iValueInt ); |
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144 if (!err) |
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145 { |
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146 iObserver.HandlePropertyChangeL( iCategory, iKey, iValueInt ); |
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147 } |
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148 break; |
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149 } |
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150 case EFMRadioPropertyByteArray: |
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151 { |
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152 TPtr8 ptr8( iValueByteArray->Des() ); |
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153 err = iProperty.Get( ptr8 ); |
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154 if (!err) |
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155 { |
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156 iObserver.HandlePropertyChangeL( iCategory, iKey, *iValueByteArray ); |
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157 } |
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158 break; |
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159 } |
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160 case EFMRadioPropertyText: |
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161 { |
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162 TPtr ptr( iValueText->Des() ); |
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163 err = iProperty.Get( ptr ); |
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164 if (!err) |
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165 { |
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166 iObserver.HandlePropertyChangeL( iCategory, iKey, *iValueText ); |
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167 } |
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168 break; |
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169 } |
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170 |
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171 default: |
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172 { |
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173 break; |
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174 } |
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175 } |
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176 |
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177 if (err) |
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178 { |
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179 iObserver.HandlePropertyChangeErrorL(iCategory, iKey, err); |
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180 } |
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181 } |
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182 |
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183 // ----------------------------------------------------------------------------- |
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184 // Cancels an outstanding active request |
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185 // ----------------------------------------------------------------------------- |
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186 // |
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187 void CFMRadioPropertyObserver::DoCancel() |
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188 { |
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189 iProperty.Cancel(); |
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190 } |
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191 |
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192 // ----------------------------------------------------------------------------- |
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193 // Getter for integer value |
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194 // ----------------------------------------------------------------------------- |
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195 // |
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196 TInt CFMRadioPropertyObserver::ValueInt( TBool aUpdate ) |
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197 { |
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198 if( aUpdate ) |
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199 { |
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200 iProperty.Get( iValueInt ); |
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201 } |
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202 return iValueInt; |
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203 } |
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204 |
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205 // ----------------------------------------------------------------------------- |
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206 // Getter for byte array value |
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207 // ----------------------------------------------------------------------------- |
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208 // |
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209 const TDesC8& CFMRadioPropertyObserver::ValueDes8( TBool aUpdate ) |
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210 { |
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211 if( aUpdate ) |
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212 { |
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213 TPtr8 ptr8( iValueByteArray->Des() ); |
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214 iProperty.Get( ptr8 ); |
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215 } |
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216 return *iValueByteArray; |
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217 } |
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218 |
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219 // ----------------------------------------------------------------------------- |
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220 // Getter for text value |
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221 // ----------------------------------------------------------------------------- |
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222 // |
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223 const TDesC& CFMRadioPropertyObserver::ValueDes( TBool aUpdate ) |
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224 { |
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225 if( aUpdate ) |
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226 { |
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227 TPtr ptr( iValueText->Des() ); |
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228 iProperty.Get( ptr ); |
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229 } |
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230 return *iValueText; |
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231 } |
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232 |