1 /* |
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2 * Copyright (c) 2007-2008 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: Base implementation of pull and push mode |
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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 //Includes |
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21 #include "mulpushmode.h" |
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22 |
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23 #include "mulassert.h" |
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24 #include "mulcachemanager.h" |
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25 #include "mulpagedatawindow.h" |
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26 #include "mullog.h" |
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27 |
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28 namespace Alf |
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29 { |
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30 |
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31 // --------------------------------------------------------------------------- |
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32 // MulPushMode() |
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33 // --------------------------------------------------------------------------- |
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34 // |
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35 MulPushMode::MulPushMode( MulPageDataWindow& aDataWindow ) |
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36 : mDataWindow(aDataWindow) |
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37 { |
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38 mCacheManager.reset( new ( EMM ) MulCacheManager()); |
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39 } |
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40 |
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41 // --------------------------------------------------------------------------- |
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42 // ~MulPushMode() |
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43 // --------------------------------------------------------------------------- |
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44 // |
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45 MulPushMode::~MulPushMode() |
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46 { |
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47 // No implementation is required. |
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48 } |
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49 |
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50 // --------------------------------------------------------------------------- |
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51 // Insert |
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52 // --------------------------------------------------------------------------- |
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53 // |
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54 bool MulPushMode::Insert(int aIndex, int aCount, const MulDataPath& aPath ) |
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55 { |
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56 __MUL_ASSERT( aIndex >= 0 && aIndex <= mCacheManager->ExpandedNodeCount() && aCount > 0, KLInvalidArgument ); |
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57 |
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58 int modelCountBefore = mCacheManager->ExpandedNodeCount(); |
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59 mCacheManager->CreateNodes( aIndex, aCount, aPath ); |
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60 |
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61 int modelCount = mCacheManager->ExpandedNodeCount(); |
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62 |
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63 // if there is a change in expanded node count of model then update |
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64 // the alf model. THis case would happen if we are inserting childnodes |
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65 // for a node which is not expanded. Then no need to update the alf model |
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66 if(mDataWindow.IsWindowEnabled() && modelCount != modelCountBefore) |
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67 { |
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68 ModelCountChanged(modelCountBefore,modelCount); |
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69 } |
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70 |
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71 // The highlight is the same but its relative index is changed |
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72 // because the buffer offsets are changed. Even in this case widget has to update the visualization |
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73 return false; |
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74 } |
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75 |
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76 // --------------------------------------------------------------------------- |
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77 // Remove |
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78 // --------------------------------------------------------------------------- |
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79 // |
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80 bool MulPushMode::Remove( int aIndex, int aCount,const MulDataPath& aPath) |
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81 { |
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82 __MUL_ASSERT( aIndex >= 0 && aCount > 0 && aIndex+aCount <= mCacheManager->ExpandedNodeCount(), KLInvalidArgument ); |
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83 |
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84 int modelCountBefore = mCacheManager->ExpandedNodeCount(); |
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85 |
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86 mCacheManager->RemoveVisualItem( aIndex, aCount, aPath ); |
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87 |
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88 int modelCount = mCacheManager->ExpandedNodeCount(); |
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89 |
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90 // To inform the calling class whether the highlight has changed |
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91 // If the current highlight is more than the total number of items. Then udjust teh highlight |
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92 bool highlightUpdated = ValidateCurrentHighlight(); |
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93 |
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94 // if there is a change in expanded node count of model then update |
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95 // the alf model. This case would happen if we are removing childnodes |
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96 // for a node which is not expanded. Then no need to update the alf model |
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97 if(mDataWindow.IsWindowEnabled() && modelCount != modelCountBefore) |
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98 { |
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99 ModelCountChanged(modelCountBefore,modelCount); |
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100 } |
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101 |
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102 // If the highlight is changed because it was greater than current model count or if |
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103 // the buffer offsets are changed then return true |
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104 return ( highlightUpdated ); |
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105 } |
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106 |
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107 // --------------------------------------------------------------------------- |
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108 // Update |
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109 // --------------------------------------------------------------------------- |
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110 // |
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111 void MulPushMode::Update(int /*aIndex*/, int /*aCount*/, const MulDataPath& /*aPath*/) |
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112 { |
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113 //no implementation required |
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114 } |
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115 |
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116 // --------------------------------------------------------------------------- |
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117 // Refresh |
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118 // --------------------------------------------------------------------------- |
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119 // |
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120 void MulPushMode::Refresh( int /*aCount*/, const MulDataPath& /*aPath*/) |
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121 { |
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122 // throw exception not implemented in push mode |
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123 throw std::logic_error("Not Implemented"); |
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124 } |
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125 |
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126 |
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127 // --------------------------------------------------------------------------- |
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128 // SetTemplate |
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129 // --------------------------------------------------------------------------- |
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130 // |
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131 void MulPushMode::SetTemplate( mulwidget::TLogicalTemplate aTemplateId ) |
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132 { |
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133 mDefaultTemplate = aTemplateId ; |
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134 |
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135 MulDataPath path; |
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136 for( int i = 0 ; i < mCacheManager->Count() ; i++ ) |
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137 { |
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138 MulPushMode::SetTemplate( i, mDefaultTemplate, path ); |
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139 } |
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140 } |
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141 |
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142 // --------------------------------------------------------------------------- |
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143 // Template |
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144 // --------------------------------------------------------------------------- |
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145 // |
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146 mulwidget::TLogicalTemplate MulPushMode::Template( ) |
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147 { |
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148 return mDefaultTemplate; |
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149 } |
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150 |
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151 // --------------------------------------------------------------------------- |
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152 // Data |
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153 // --------------------------------------------------------------------------- |
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154 // |
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155 const MulVisualItem* MulPushMode::Data( int aIndex, const MulDataPath& /*aPath*/) const |
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156 { |
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157 __MUL_ASSERT( aIndex >= 0 && aIndex < mCacheManager->ExpandedNodeCount(), KLInvalidArgument ); |
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158 |
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159 return mCacheManager->Data( aIndex ); |
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160 } |
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161 |
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162 // --------------------------------------------------------------------------- |
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163 // SetData |
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164 // --------------------------------------------------------------------------- |
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165 // |
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166 void MulPushMode::SetData( int aIndex, std::auto_ptr<MulVisualItem> aVisualItem, |
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167 const MulDataPath& aPath) |
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168 { |
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169 __MUL_ASSERT( aIndex >= 0 && aIndex < mCacheManager->ExpandedNodeCount(),_L("Invalid Argument")); |
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170 |
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171 MulVisualItem* visualItem = mCacheManager->Data( aIndex ); |
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172 MUL_LOG_INFO2("MUL::MulPushMode::SetData() Index:%d,item:%x",aIndex, visualItem); |
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173 if( visualItem ) |
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174 { |
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175 mCacheManager->UpdateVisualItem( *aVisualItem , aPath, aIndex ); |
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176 } |
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177 else |
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178 { |
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179 // Validating input visual item |
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180 ValidateVisualItem( *aVisualItem ); |
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181 mCacheManager->AddVisualItem( aVisualItem, aPath, aIndex ); |
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182 } |
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183 } |
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184 |
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185 // --------------------------------------------------------------------------- |
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186 // Count |
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187 // --------------------------------------------------------------------------- |
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188 // |
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189 int MulPushMode::Count(const MulDataPath& /*aPath*/) const |
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190 { |
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191 return mCacheManager->ExpandedNodeCount(); |
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192 } |
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193 |
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194 // --------------------------------------------------------------------------- |
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195 // SetTemplate |
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196 // --------------------------------------------------------------------------- |
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197 // |
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198 void MulPushMode::SetTemplate( int aItemIndex, mulwidget::TLogicalTemplate aTemplateId, |
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199 const MulDataPath& /*aPath*/ ) |
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200 { |
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201 MUL_LOG_ENTRY_EXIT("MUL::MulPushMode::SetTemplate"); |
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202 |
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203 MulVisualItem* visualItem = mCacheManager->Data( aItemIndex ); |
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204 if( visualItem ) |
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205 { |
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206 mulwidget::TLogicalTemplate logicalTemplate = (mulwidget::TLogicalTemplate) visualItem->AttributeAsInt( mulvisualitem::KAttributeTemplate ); |
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207 //if template is not same then only change it |
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208 if( logicalTemplate != aTemplateId ) |
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209 { |
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210 visualItem->SetAttribute( mulvisualitem::KAttributeTemplate, aTemplateId ); |
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211 } |
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212 } |
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213 } |
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214 |
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215 // --------------------------------------------------------------------------- |
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216 // CurrentItemCount |
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217 // --------------------------------------------------------------------------- |
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218 // |
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219 int MulPushMode::CurrentItemCount() const |
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220 { |
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221 return mCacheManager->ExpandedNodeCount(); |
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222 } |
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223 |
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224 // --------------------------------------------------------------------------- |
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225 // CacheManager |
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226 // --------------------------------------------------------------------------- |
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227 // |
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228 MulCacheManager& MulPushMode::CacheManager() const |
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229 { |
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230 return *mCacheManager; |
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231 } |
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232 |
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233 // --------------------------------------------------------------------------- |
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234 //ValidateVisualItem |
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235 // --------------------------------------------------------------------------- |
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236 // |
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237 void MulPushMode::ValidateVisualItem( MulVisualItem& aVisualItem ) |
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238 { |
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239 //add default template to item if template is not already set and default template is not null |
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240 IMulVariantType* itemTemplate = aVisualItem.Attribute( mulvisualitem::KAttributeTemplate ); |
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241 if( !itemTemplate ) |
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242 { |
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243 if( mDefaultTemplate != mulwidget::KTemplateUnknown ) |
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244 { |
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245 //add default template to this visual item |
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246 aVisualItem.SetAttribute( mulvisualitem::KAttributeTemplate, mDefaultTemplate, 0 ); |
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247 } |
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248 else |
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249 { |
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250 //template must be there |
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251 throw std::invalid_argument("Default template not available."); |
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252 } |
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253 } |
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254 } |
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255 |
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256 // --------------------------------------------------------------------------- |
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257 // ModelCountChanged |
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258 // --------------------------------------------------------------------------- |
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259 // |
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260 void MulPushMode::ModelCountChanged(int aOldCount, int aNewCount) |
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261 { |
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262 MUL_LOG_ENTRY_EXIT("MUL::MulPushMode::ModelCountChanged()"); |
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263 |
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264 MUL_LOG_INFO2("MUL::MulPushMode::ModelCountChanged() aOldCount:%d,aNewCount:%d", aOldCount, aNewCount ); |
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265 |
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266 mDataWindow.AdjustOffset(); |
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267 } |
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268 |
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269 // --------------------------------------------------------------------------- |
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270 // ValidateCurrentHighlight |
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271 // --------------------------------------------------------------------------- |
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272 // |
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273 bool MulPushMode::ValidateCurrentHighlight() |
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274 { |
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275 // To inform the calling class whether the highlight has changed |
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276 int modelCount = mCacheManager->ExpandedNodeCount(); |
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277 if( mDataWindow.Highlight() >= modelCount) |
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278 { |
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279 mDataWindow.UpdateHighlight( modelCount-1 ); |
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280 return true; |
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281 } |
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282 return false; |
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283 } |
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284 |
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285 // --------------------------------------------------------------------------- |
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286 // Item |
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287 // --------------------------------------------------------------------------- |
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288 // |
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289 const MulVisualItem& MulPushMode::Item( int aAbsoluteIndex ) |
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290 { |
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291 MulVisualItem* visualItem = mCacheManager->Data( aAbsoluteIndex ); |
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292 if(!visualItem) |
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293 { |
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294 throw std::invalid_argument(KInvalidArgument); |
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295 } |
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296 return *visualItem; |
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297 } |
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298 |
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299 } // namespace ends here |
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300 |
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301 //End of file |
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302 |
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