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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 * This is the implementation of the class defined in CCnvCategory.h |
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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 |
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21 #include <barsread.h> // TResourceReader |
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22 #include <e32math.h> // Math::Round() |
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23 #include <s32strm.h> // RReadStream, RWriteStream |
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24 #include <Converter.rsg> |
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25 #include "CCnvCategory.h" |
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26 |
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27 CCnvCategory::~CCnvCategory() |
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28 { |
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29 iUnitArray.Reset(); |
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30 iTempUintForRestoreArray.Reset(); |
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31 } |
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32 |
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33 CCnvCategory* CCnvCategory::NewLC( TResourceReader& aReader , TBool aIsCurrencyCategory) |
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34 { |
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35 CCnvCategory* self = new( ELeave ) CCnvCategory; |
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36 CleanupStack::PushL( self ); |
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37 self->ConstructFromResourceL( aReader ,aIsCurrencyCategory ); |
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38 |
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39 return self; |
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40 } |
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41 |
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42 void CCnvCategory::ConstructFromResourceL( TResourceReader& aReader, TBool aIsCurrencyCategory) |
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43 { |
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44 // read the category parameters |
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45 iName.Copy( aReader.ReadTPtrC() ); |
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46 TInt isChineseorder = aReader.ReadInt8(); |
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47 iBaseUnitIndex = aReader.ReadInt8(); |
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48 |
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49 |
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50 if( isChineseorder == 1) |
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51 { |
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52 switch( User::Language() ) |
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53 { |
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54 case ELangHongKongChinese: |
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55 case ELangTaiwanChinese: |
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56 case ELangPrcChinese: |
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57 iDestinationUnitIndex = aReader.ReadInt8(); |
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58 iSourceUnitIndex = aReader.ReadInt8(); |
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59 break; |
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60 default: |
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61 iSourceUnitIndex = aReader.ReadInt8(); |
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62 iDestinationUnitIndex = aReader.ReadInt8(); |
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63 break; |
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64 } |
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65 } |
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66 else |
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67 { |
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68 iSourceUnitIndex = aReader.ReadInt8(); |
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69 iDestinationUnitIndex = aReader.ReadInt8(); |
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70 } |
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71 |
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72 TBool isTemperatureCategory( EFalse ); |
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73 if( aReader.ReadInt8() != 0 ) |
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74 { |
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75 isTemperatureCategory = ETrue; |
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76 } |
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77 |
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78 // start reading the unit array |
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79 TInt numUnits = aReader.ReadInt16(); |
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80 |
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81 TCnvUnit unit; |
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82 for( TInt i = 0; i < numUnits; i++ ) |
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83 { |
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84 unit.ReadFromResource( aReader, isTemperatureCategory, aIsCurrencyCategory ); |
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85 iUnitArray.AppendL( unit ); |
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86 } |
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87 } |
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88 |
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89 TInt CCnvCategory::MdcaCount() const |
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90 { |
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91 return iUnitArray.Count(); |
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92 } |
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93 |
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94 // Returns the name of the unit at index 'aIndex' |
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95 TPtrC CCnvCategory::MdcaPoint( TInt aIndex ) const |
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96 { |
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97 return TPtrC( iUnitArray.At( aIndex ).iName ); |
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98 } |
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99 |
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100 TReal CCnvCategory::Convert( TUint aSourceUnit, TUint aDestinationUnit, |
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101 const TReal& aAmount, TUint aDecimals ) const |
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102 { |
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103 const TCnvUnit& srcUnit = iUnitArray.At( aSourceUnit ); |
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104 const TCnvUnit& dstUnit = iUnitArray.At( aDestinationUnit ); |
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105 |
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106 TReal result( ( aAmount - srcUnit.iOffset ) / srcUnit.iFactor |
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107 * dstUnit.iFactor + dstUnit.iOffset ); |
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108 Math::Round( result, result, aDecimals ); |
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109 return result; |
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110 } |
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111 |
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112 void CCnvCategory::GetDefaultUnits( TUint& aSourceUnit, |
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113 TUint& aDestinationUnit ) const |
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114 { |
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115 aSourceUnit = iSourceUnitIndex; |
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116 aDestinationUnit = iDestinationUnitIndex; |
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117 } |
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118 |
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119 void CCnvCategory::SetDefaultUnits( TUint aSourceUnit, |
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120 TUint aDestinationUnit ) |
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121 { |
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122 iSourceUnitIndex = aSourceUnit; |
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123 iDestinationUnitIndex = aDestinationUnit; |
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124 } |
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125 |
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126 TUint CCnvCategory::BaseUnit() const |
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127 { |
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128 return iBaseUnitIndex; |
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129 } |
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130 |
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131 void CCnvCategory::SetBaseUnit( const TUint& aBaseUnit ) |
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132 { |
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133 iBaseUnitIndex = aBaseUnit; |
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134 } |
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135 |
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136 const TDes& CCnvCategory::Name() const |
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137 { |
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138 return iName; |
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139 } |
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140 |
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141 TCnvUnit& CCnvCategory::Unit( TUint aIndex ) |
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142 { |
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143 return iUnitArray.At( aIndex ); |
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144 } |
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145 |
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146 // Store the data in a stream. |
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147 void CCnvCategory::ExternalizeL( RWriteStream& aStream ) const |
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148 { |
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149 aStream.WriteUint8L( iBaseUnitIndex ); |
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150 aStream.WriteUint8L( iSourceUnitIndex ); |
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151 aStream.WriteUint8L( iDestinationUnitIndex ); |
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152 |
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153 TUint len( iUnitArray.Count() ); |
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154 aStream.WriteUint8L( iUnitArray.Count() ); |
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155 for( TUint i = 0; i < len; i ++) |
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156 { |
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157 iUnitArray.At( i ).ExternalizeL( aStream ); |
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158 } |
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159 } |
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160 |
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161 // Recover the data from a stream. |
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162 void CCnvCategory::InternalizeL( RReadStream& aStream, TBool aIsCurrencyCategory ) |
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163 { |
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164 TBuf<16> currencyNames[3]; |
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165 |
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166 iBaseUnitIndex = aStream.ReadUint8L(); |
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167 iSourceUnitIndex = aStream.ReadUint8L(); |
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168 iDestinationUnitIndex = aStream.ReadUint8L(); |
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169 |
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170 TUint len( aStream.ReadUint8L() ); |
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171 |
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172 //The ini file exists. So delete the existing iUnitArray and load it again |
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173 //from the Configuration Settings file |
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174 |
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175 //Trying to use enum values as array indexes |
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176 currencyNames[1] = iUnitArray.At(0).iName; // Qtn_Cnv_Home |
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177 currencyNames[2] = iUnitArray.At(1).iName; // Qtn_Cnv_Foreign |
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178 |
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179 iUnitArray.Delete(0,iUnitArray.Count()); |
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180 |
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181 for( TUint i = 0; i < len; i ++) |
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182 { |
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183 //Change: Loads the currencies directly from ini file. no searching.. |
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184 // TInt index; |
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185 TCnvUnit unit; |
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186 unit.InternalizeL( aStream , aIsCurrencyCategory); |
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187 |
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188 iUnitArray.AppendL(unit); |
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189 } |
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190 |
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191 TCurrencyType type; |
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192 |
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193 for( TUint in = 0; in < len; in++) |
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194 { |
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195 type = iUnitArray.At(in).iNameType; |
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196 if(type == EHome) |
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197 iUnitArray.At(in).iName = currencyNames[1]; |
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198 else if(type == EForeign) |
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199 iUnitArray.At(in).iName = currencyNames[2]; |
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200 } |
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201 } |
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202 |
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203 |
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204 void CCnvCategory::AddNewCurrencyL( TInt aCurrencyId, TDesC& aNewName, TReal& aNewFactor, TCurrencyType aType) |
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205 { |
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206 TCnvUnit unit; |
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207 TUint curencyId = aCurrencyId; // To remove the warnings |
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208 unit.iName = aNewName; |
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209 unit.iFactor = aNewFactor; |
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210 unit.iNameType = aType; |
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211 unit.iIsCurrencyUnit = ETrue; |
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212 //To calculate the id for the new currency added. |
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213 //will run thru the ids, gets the largest id and increments it and assigns to the new unit. |
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214 //Make sure that the ids for the currencies have the largest possible value in the hrh file. |
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215 TUint id; |
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216 id = iUnitArray.At(0).iId; |
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217 for(TInt i = 1; i < iUnitArray.Count(); i++) |
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218 { |
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219 if(id < iUnitArray.At(i).iId) |
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220 { |
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221 id = iUnitArray.At(i).iId; |
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222 } |
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223 } |
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224 id++; |
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225 unit.iId = id; |
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226 |
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227 iUnitArray.InsertL( curencyId, unit ); |
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228 //New element has been added. So set the base source and destination currencies accordingly |
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229 if( iBaseUnitIndex >= curencyId ) |
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230 { |
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231 iBaseUnitIndex++; |
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232 } |
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233 if( iSourceUnitIndex >= curencyId ) |
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234 { |
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235 iSourceUnitIndex++; |
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236 } |
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237 if( iDestinationUnitIndex >= curencyId ) |
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238 { |
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239 iDestinationUnitIndex++; |
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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 |
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245 |
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246 void CCnvCategory::DeleteCurrency(TInt aCurrencyId) |
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247 { |
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248 iUnitArray.Delete(aCurrencyId); |
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249 |
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250 TUint unsignedCurrencyId = aCurrencyId; //to remove warnings |
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251 |
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252 //An element has been deleted. So set the base source and destination currencies accordingly |
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253 if(iBaseUnitIndex >= unsignedCurrencyId ) |
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254 { |
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255 if( iBaseUnitIndex > 0) |
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256 iBaseUnitIndex--; |
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257 } |
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258 if(iSourceUnitIndex >= unsignedCurrencyId ) |
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259 { |
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260 if( iSourceUnitIndex > 0) |
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261 iSourceUnitIndex--; |
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262 } |
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263 if(iDestinationUnitIndex >= unsignedCurrencyId ) |
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264 { |
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265 if( iDestinationUnitIndex > 0) |
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266 iDestinationUnitIndex--; |
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267 } |
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268 |
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269 } |
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270 |
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271 |
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272 void CCnvCategory::CreateTempUnitArrayForRestore() |
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273 { |
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274 iTempUintForRestoreArray.Reset(); |
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275 for ( TInt i = 0; i < iUnitArray.Count() ; i++ ) |
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276 { |
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277 TRAP_IGNORE( iTempUintForRestoreArray.AppendL( iUnitArray.At( i ) ) ); |
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278 } |
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279 } |
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280 |
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281 void CCnvCategory::RestoreUnitArray() |
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282 { |
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283 iUnitArray.Reset(); |
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284 for ( TInt i = 0 ; i < iTempUintForRestoreArray.Count() ; i++ ) |
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285 { |
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286 TRAP_IGNORE( iUnitArray.AppendL( iTempUintForRestoreArray.At( i ) ) ); |
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287 } |
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288 } |
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289 |
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290 // End of File |