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1 /* |
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2 * Copyright (c) 2007-2007 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 the License "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: It filter the media items as per the filter value sets |
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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 |
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20 |
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21 #include <mclfitem.h> |
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22 #include "mgpostfilter.h" |
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23 |
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24 const TInt32 KLargestSigned32 = 0x7fffffff; |
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25 const TInt64 KLargestSigned64 = 0x7fffffffffffffff; |
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26 |
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27 // ----------------------------------------------------------------------------- |
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28 // CPostFilter::NewL |
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29 // Returns the instance of CPostFilter. |
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30 // ----------------------------------------------------------------------------- |
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31 CPostFilter* CPostFilter::NewL() |
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32 { |
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33 |
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34 CPostFilter* self = new (ELeave) CPostFilter(); |
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35 return self; |
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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 // ----------------------------------------------------------------------------- |
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41 // CPostFilter::~CPostFilter |
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42 // Destructor |
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43 // ----------------------------------------------------------------------------- |
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44 |
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45 CPostFilter::~CPostFilter() |
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46 { |
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47 delete iFilterVal; |
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48 } |
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49 |
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50 // ----------------------------------------------------------------------------- |
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51 // CPostFilter::FilterItemsL |
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52 // Method to filter source list. This method is called when |
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53 // the filtering process is executed by list model refresh method. |
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54 // ----------------------------------------------------------------------------- |
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55 void CPostFilter::FilterItemsL( const TArray<MCLFItem*>& aItemList, |
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56 RPointerArray<MCLFItem>& aFilteredItemList ) |
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57 { |
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58 // It will filter the Items |
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59 MCLFItem* item = NULL; |
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60 |
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61 for( TInt i = 0 ; i < aItemList.Count() ; ++i ) |
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62 { |
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63 item = aItemList[i]; |
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64 |
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65 if( 0 == CompareItem( item )) |
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66 { |
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67 // item should be include in result |
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68 aFilteredItemList.AppendL( item ); |
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69 } |
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70 } |
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71 } |
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72 |
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73 // ----------------------------------------------------------------------------- |
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74 // CPostFilter::SetFilterMetaData |
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75 // method to set the filter metadata |
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76 // ----------------------------------------------------------------------------- |
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77 void CPostFilter::SetFilterMetaData(const TCLFDefaultFieldId& aMetaDataId, |
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78 const TCLFItemDataType& aMetaDataType) |
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79 { |
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80 iFilterMetaData = aMetaDataId; |
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81 iFilterDataType = aMetaDataType; |
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82 } |
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83 |
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84 // ----------------------------------------------------------------------------- |
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85 // CPostFilter::SetFilterValue |
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86 // Method to set the filter value |
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87 // return KErrCancel if the FilterMetaData is not Set |
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88 // return KErrArgument if the Start or End Value is not Supported |
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89 // return KErrNone if sucessful |
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90 // ----------------------------------------------------------------------------- |
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91 void CPostFilter::SetFilterValueL(const TDesC& aStartVal, |
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92 const TDesC& aEndVal) |
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93 { |
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94 // check the filter values as per the meta data ... |
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95 // If any abnormal values come it will return proper error code.. |
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96 switch ( iFilterDataType ) |
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97 { |
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98 case ECLFItemDataTypeDesC: |
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99 { |
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100 //Filter Id and Value Not NULL |
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101 if( 0 != aStartVal.CompareF( KNullDesC ) ) |
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102 { |
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103 iFilterVal = aStartVal.AllocL(); |
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104 } |
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105 else |
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106 { |
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107 User::Leave( KErrArgument ); |
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108 } |
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109 break; |
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110 } |
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111 |
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112 case ECLFItemDataTypeTTime: |
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113 { |
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114 if( ( 0 == aStartVal.CompareF( KNullDesC ) ) && |
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115 ( 0 == aEndVal.CompareF( KNullDesC ) ) ) |
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116 { |
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117 User::Leave( KErrArgument ); |
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118 } |
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119 if( 0 != aStartVal.CompareF( KNullDesC ) ) |
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120 { |
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121 // check whether start time is in correct format |
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122 if( KErrNone != iStartTime.Set( aStartVal ) ) |
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123 { |
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124 User::Leave( KErrArgument ); |
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125 } |
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126 } |
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127 |
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128 if( 0 != aEndVal.CompareF( KNullDesC ) ) |
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129 { |
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130 // check whether end time is in correct format |
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131 if( KErrNone != iEndTime.Set( aEndVal ) ) |
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132 { |
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133 User::Leave( KErrArgument ); |
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134 } |
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135 } |
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136 |
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137 if( iStartTime > iEndTime ) |
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138 { |
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139 User::Leave( KErrArgument ); |
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140 } |
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141 |
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142 break; |
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143 } |
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144 |
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145 case ECLFItemDataTypeTInt32: |
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146 { |
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147 TLex lex; |
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148 if( ( 0 == aStartVal.CompareF( KNullDesC ) ) && |
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149 ( 0 == aEndVal.CompareF( KNullDesC ) ) ) |
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150 { |
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151 User::Leave( KErrArgument ); |
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152 } |
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153 if( 0 != aStartVal.CompareF( KNullDesC ) ) |
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154 { |
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155 lex = aStartVal; |
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156 //check if start value was valid |
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157 if( KErrNone != lex.Val( iStartIntVal ) ) |
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158 { |
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159 User::Leave( KErrArgument ); |
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160 } |
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161 } |
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162 |
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163 if( 0 != aEndVal.CompareF( KNullDesC ) ) |
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164 { |
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165 lex = aEndVal; |
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166 //check if end value given was valid |
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167 if( KErrNone != lex.Val( iEndIntVal ) ) |
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168 { |
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169 User::Leave( KErrArgument ); |
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170 } |
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171 } |
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172 |
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173 if( iStartIntVal > iEndIntVal |
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174 || iStartIntVal<0 |
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175 || iEndIntVal<0) |
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176 { |
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177 User::Leave( KErrArgument ); |
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178 } |
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179 |
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180 break; |
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181 } |
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182 |
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183 default: |
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184 { |
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185 User::Leave( KErrArgument ); |
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186 } |
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187 }//End Switch Case |
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188 |
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189 }// End Function |
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190 |
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191 |
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192 // ----------------------------------------------------------------------------- |
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193 // CPostFilter::CPostFilter |
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194 // Constructor |
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195 // ----------------------------------------------------------------------------- |
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196 CPostFilter::CPostFilter(): |
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197 iFilterMetaData( ECLFFieldIdNull ), |
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198 iFilterVal(NULL), |
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199 iStartTime( 0 ), |
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200 iEndTime( KLargestSigned64 ), |
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201 iStartIntVal( 0 ), |
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202 iEndIntVal( KLargestSigned32 ) |
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203 { |
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204 |
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205 } |
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206 |
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207 |
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208 |
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209 |
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210 |
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211 // ----------------------------------------------------------------------------- |
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212 // CPostFilter::Clear |
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213 // It will clear the filter metadata field |
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214 // ----------------------------------------------------------------------------- |
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215 void CPostFilter::Clear() |
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216 { |
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217 iFilterMetaData = ECLFFieldIdNull; |
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218 iFilterDataType = ECLFItemDataTypeNull; |
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219 iStartIntVal=0; |
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220 iEndIntVal =KLargestSigned32; |
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221 iStartTime = 0; |
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222 iEndTime =KLargestSigned64; |
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223 |
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224 |
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225 delete iFilterVal; |
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226 iFilterVal = NULL; |
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227 |
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228 } |
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229 |
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230 |
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231 // ----------------------------------------------------------------------------- |
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232 // CPostFilter::CompareItem |
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233 // This function will check if the given aItem matches with the set |
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234 // filtered values or not. |
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235 // @return -1 If aItem does not match with the set filter values ,0 If it match. |
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236 // ----------------------------------------------------------------------------- |
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237 TInt CPostFilter::CompareItem( MCLFItem* aItem ) |
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238 { |
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239 //this function matches the aItem with the filter values. |
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240 TInt retValue = 0; |
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241 // If no filter MetaData skip the function |
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242 if( ECLFFieldIdNull != iFilterMetaData ) |
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243 { |
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244 switch ( iFilterDataType ) |
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245 { |
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246 case ECLFItemDataTypeDesC: |
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247 { |
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248 if( 0 != ( *iFilterVal ).CompareF( KNullDesC ) ) |
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249 { |
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250 TPtrC itemVal; |
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251 if( KErrNone == aItem->GetField( iFilterMetaData, itemVal ) ) |
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252 { |
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253 if( 0 != itemVal.CompareF( *iFilterVal ) ) |
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254 { |
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255 retValue = -1; |
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256 } |
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257 } |
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258 else |
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259 { |
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260 retValue = -1; |
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261 } |
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262 } |
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263 break; |
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264 }// case ECLFItemDataTypeDesC |
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265 |
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266 |
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267 case ECLFItemDataTypeTTime: |
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268 { |
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269 TTime itemVal; |
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270 if( KErrNone == aItem->GetField( iFilterMetaData, itemVal ) ) |
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271 { |
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272 if( !(( itemVal >= iStartTime ) && ( itemVal <= iEndTime )) ) |
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273 { |
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274 retValue = -1; |
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275 } |
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276 |
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277 } |
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278 else |
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279 { |
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280 retValue = -1; |
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281 } |
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282 break; |
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283 }// case ECLFItemDataTypeTTime |
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284 |
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285 |
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286 case ECLFItemDataTypeTInt32: |
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287 { |
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288 TInt32 itemVal; |
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289 if( KErrNone == aItem->GetField( iFilterMetaData, itemVal ) ) |
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290 { |
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291 if( !(( itemVal >= iStartIntVal ) && ( itemVal <= iEndIntVal ))) |
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292 { |
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293 retValue = -1; |
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294 } |
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295 } |
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296 else |
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297 { |
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298 retValue = -1; |
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299 } |
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300 break; |
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301 }// case ECLFItemDataTypeTInt32 |
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302 |
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303 default: |
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304 { |
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305 retValue = -1; |
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306 break; |
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307 } |
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308 |
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309 }//End Switch Case |
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310 } |
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311 return retValue; |
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312 } |
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313 |
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314 |