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1 /* |
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2 * Copyright (c) 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: Class that reconstructs a list from notifications |
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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 // CLASS HEADER |
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22 #include "glxlistreconstruction.h" |
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23 |
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24 // EXTERNAL INCLUDES |
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25 #include <digia/eunit/eunitmacros.h> |
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26 #include <digia/eunit/eunitdecorators.h> |
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27 #include <mpxcollectionpath.h> |
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28 |
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29 // INTERNAL INCLUDES |
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30 |
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31 // ----------------------------------------------------------------------------- |
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32 // Constructor |
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33 // ----------------------------------------------------------------------------- |
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34 // |
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35 void CGlxListReconstructionBase::ConstructL( TInt aReservationCount ) |
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36 { |
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37 iNotifications.ReserveL( aReservationCount ); |
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38 iReconstructedList.ReserveL( aReservationCount ); |
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39 iFocusIndex = -1; |
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40 } |
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41 |
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42 // ----------------------------------------------------------------------------- |
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43 // Destructor |
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44 // ----------------------------------------------------------------------------- |
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45 // |
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46 CGlxListReconstructionBase::~CGlxListReconstructionBase() |
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47 { |
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48 iNotifications.Close(); |
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49 iReconstructedList.Close(); |
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50 iSelectedItemIndices.Close(); |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // Clear notifications array |
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55 // ----------------------------------------------------------------------------- |
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56 // |
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57 void CGlxListReconstructionBase::ClearNotifications() |
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58 { |
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59 iNotifications.Reset(); |
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60 } |
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61 |
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62 // ----------------------------------------------------------------------------- |
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63 // Handle items being added |
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64 // ----------------------------------------------------------------------------- |
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65 // |
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66 void CGlxListReconstructionBase::HandleItemsAdded( TInt aAddedAtIndex, TInt aCount ) |
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67 { |
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68 TNotification::TData notification[] = { TNotification::EAdd, aAddedAtIndex, aCount }; |
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69 // If fails, not big enough reservation |
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70 EUNIT_ASSERT( KErrNone == iNotifications.Append( *notification ) ); |
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71 |
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72 // reconstruct the list |
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73 for ( TInt i = 0; i < aCount; i++ ) |
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74 { |
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75 // If fails, not big enough reservation |
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76 EUNIT_ASSERT( KErrNone == iReconstructedList.Insert( |
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77 OriginalItem( aAddedAtIndex ), aAddedAtIndex ) ); |
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78 } |
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79 |
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80 // Move focus |
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81 if ( KErrNotFound == iFocusIndex ) |
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82 { |
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83 iFocusIndex = 0; |
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84 } |
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85 else if ( iFocusIndex >= aAddedAtIndex ) |
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86 { |
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87 iFocusIndex += aCount; |
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88 } |
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89 |
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90 // Move selection |
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91 for ( TInt i = 0; i < iSelectedItemIndices.Count(); i++ ) |
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92 { |
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93 if ( iSelectedItemIndices[ i ] >= aAddedAtIndex ) |
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94 { |
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95 iSelectedItemIndices[ i ] += aCount; |
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96 } |
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97 } |
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98 |
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99 // Make sure the original and reconstruction match |
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100 EUNIT_ASSERT( ReconstructionEquals() ); |
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101 } |
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102 |
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103 // ----------------------------------------------------------------------------- |
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104 // Handle items being removed |
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105 // ----------------------------------------------------------------------------- |
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106 // |
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107 void CGlxListReconstructionBase::HandleItemsRemoved( TInt aRemovedFromIndex, TInt aCount ) |
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108 { |
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109 TNotification::TData notification[] = { TNotification::ERemove, aRemovedFromIndex, aCount }; |
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110 // If fails, not big enough reservation |
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111 EUNIT_ASSERT( KErrNone == iNotifications.Append( *notification ) ); |
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112 // reconstruct the list |
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113 for ( TInt i = 0; i < aCount; i++ ) |
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114 { |
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115 iReconstructedList.Remove( aRemovedFromIndex ); |
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116 } |
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117 |
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118 // Move focus |
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119 if ( iFocusIndex >= aRemovedFromIndex + aCount ) |
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120 { |
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121 iFocusIndex -= aCount; |
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122 } |
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123 else if ( iFocusIndex >= aRemovedFromIndex ) |
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124 { |
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125 // Focused item was removed |
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126 iFocusIndex = aRemovedFromIndex - 1; |
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127 if ( iFocusIndex < 0 ) |
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128 { |
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129 iFocusIndex = 0; |
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130 } |
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131 } |
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132 if ( !iReconstructedList.Count() ) |
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133 { |
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134 iFocusIndex = KErrNotFound; |
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135 } |
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136 |
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137 // Move/remove selection |
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138 TInt i = 0; |
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139 while ( i < iSelectedItemIndices.Count() ) |
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140 { |
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141 if ( iSelectedItemIndices[ i ] >= aRemovedFromIndex + aCount ) |
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142 { |
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143 iSelectedItemIndices[ i ] -= aCount; |
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144 } |
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145 else if ( iSelectedItemIndices[ i ] >= aRemovedFromIndex ) |
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146 { |
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147 iSelectedItemIndices.Remove( i ); |
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148 continue; |
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149 } |
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150 i++; |
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151 } |
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152 |
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153 // Make sure the original and reconstruction match |
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154 EUNIT_ASSERT( ReconstructionEquals() ); |
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155 } |
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156 |
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157 // ----------------------------------------------------------------------------- |
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158 // Handle focus changed |
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159 // ----------------------------------------------------------------------------- |
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160 // |
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161 void CGlxListReconstructionBase::HandleFocusChanged( NGlxListDefs::TFocusChangeType aType, |
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162 TInt aNewIndex, TInt aOldIndex ) |
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163 { |
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164 TNotification::TData notification[] = { TNotification::EFocus, aOldIndex, static_cast< TInt >( aType ) }; |
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165 // If fails, not big enough reservation |
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166 EUNIT_ASSERT( iNotifications.Append( *notification ) == KErrNone ); |
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167 |
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168 iFocusIndex = aNewIndex; |
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169 |
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170 // Make sure the original and reconstruction match |
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171 EUNIT_ASSERT( ReconstructionEquals() ); |
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172 } |
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173 |
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174 // ----------------------------------------------------------------------------- |
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175 // Handle items selected |
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176 // ----------------------------------------------------------------------------- |
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177 // |
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178 void CGlxListReconstructionBase::HandleItemSelected( TInt aIndex, TBool aSelected ) |
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179 { |
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180 TNotification::TData notification[] = { TNotification::ESelection, aIndex, aSelected }; |
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181 // If fails, not big enough reservation |
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182 EUNIT_ASSERT( iNotifications.Append( *notification ) == KErrNone ); |
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183 |
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184 // Should not get a notification that causes no change |
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185 if ( aSelected ) |
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186 { |
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187 EUNIT_ASSERT( KErrNotFound == iSelectedItemIndices.Find( aIndex ) ); |
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188 iSelectedItemIndices.Append( aIndex ); |
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189 } |
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190 else |
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191 { |
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192 TInt index = iSelectedItemIndices.Find( aIndex ); |
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193 EUNIT_ASSERT( KErrNotFound != index ); |
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194 iSelectedItemIndices.Remove( index ); |
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195 } |
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196 |
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197 EUNIT_ASSERT( ReconstructionEquals() ); |
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198 } |
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199 |
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200 // ----------------------------------------------------------------------------- |
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201 // Test if notifications match |
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202 // ----------------------------------------------------------------------------- |
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203 // |
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204 TBool CGlxListReconstructionBase::NotificationListEquals( const TNotification::TData* aNotificationList ) |
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205 { |
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206 ASSERT( aNotificationList ); |
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207 |
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208 TBool fail = EFalse; |
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209 // Iterator through notifications list |
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210 TBool markerFound = EFalse; |
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211 TInt i = 0; |
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212 while ( ETrue ) |
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213 { |
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214 if ( i == iNotifications.Count() ) |
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215 { |
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216 if ( KEndMarker == aNotificationList[ i ] ) |
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217 { |
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218 markerFound = ETrue; |
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219 } |
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220 break; |
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221 } |
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222 // Notifications must match |
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223 const TNotification& notification = iNotifications[ i ]; |
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224 fail |= ( notification != aNotificationList[ i ] ); |
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225 i++; |
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226 } |
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227 // Must have reached the end of iNotifications |
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228 fail |= ( i != iNotifications.Count() ); |
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229 // Must have found a marker |
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230 fail |= !markerFound; |
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231 |
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232 return !fail; |
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233 } |
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234 |