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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: Implementation of Pull 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 //Includes |
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20 #include "mulpullmode.h" |
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21 |
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22 #include <mul/imulmodelprovider.h> |
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23 |
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24 |
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25 #include "mulassert.h" |
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26 #include "mulcachemanager.h" |
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27 #include "muldatawindow.h" |
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28 #include "mulpagedatawindow.h" |
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29 #include "mul/mulmodelutility.h" |
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30 #include "mullog.h" |
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31 #include "mulasyncdataprovider.h" |
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32 |
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33 namespace Alf |
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34 { |
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35 |
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36 // --------------------------------------------------------------------------- |
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37 // MulPullMode() |
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38 // --------------------------------------------------------------------------- |
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39 // |
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40 MulPullMode::MulPullMode(MulPageDataWindow& aDataWindow, |
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41 const IMulModelProvider& aModelProvider) |
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42 :MulPushMode( aDataWindow ) |
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43 { |
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44 //mModelProvider = const_cast<IMulModelProvider*>( &aModelProvider ); |
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45 MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::MulPullModeImpl()"); |
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46 mModelProvider.reset( new (ELeave) MulAsyncDataProvider( const_cast<IMulModelProvider&>(aModelProvider), aDataWindow )); |
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47 } |
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48 |
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49 // --------------------------------------------------------------------------- |
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50 // ~MulPullMode() |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 MulPullMode::~MulPullMode() |
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54 { |
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55 // No implementation is required. |
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56 MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::~MulPullModeImpl()"); |
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57 } |
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58 |
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59 // ------------------------ From IMulModel ----------------------------------- |
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60 |
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61 // --------------------------------------------------------------------------- |
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62 // Update |
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63 // --------------------------------------------------------------------------- |
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64 // |
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65 void MulPullMode::Update(int aIndex, int aCount, const MulDataPath& /*aPath*/) |
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66 { |
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67 // throw exception if index is out of bound |
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68 __MUL_ASSERT( aIndex >= 0 && aCount > 0 && aIndex+aCount <= mCacheManager->ExpandedNodeCount(), KLInvalidArgument ); |
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69 |
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70 int startIndex = aIndex; |
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71 int range = 0; |
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72 bool firstTime = true; |
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73 for(int i = aIndex; i < aCount+aIndex ; ++i) |
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74 { |
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75 if( mDataWindow.IsItemInDataWindow(i) ) |
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76 { |
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77 range++; |
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78 firstTime = true; |
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79 } |
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80 else |
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81 { |
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82 if(firstTime) |
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83 { |
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84 firstTime = false; |
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85 if(range>0) |
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86 { |
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87 ProvideData(startIndex,range); |
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88 range = 0; |
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89 } |
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90 } |
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91 startIndex = i + 1; |
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92 } |
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93 } |
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94 ProvideData(startIndex,range); |
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95 } |
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96 |
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97 // --------------------------------------------------------------------------- |
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98 // Refresh |
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99 // --------------------------------------------------------------------------- |
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100 // |
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101 void MulPullMode::Refresh( int aCount, const MulDataPath& aPath ) |
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102 { |
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103 int modelCountBefore = mCacheManager->ExpandedNodeCount(); |
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104 |
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105 // remove all old nodes |
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106 for(int currentIndex = 0; currentIndex < modelCountBefore; currentIndex++) |
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107 { |
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108 mCacheManager->RemoveVisualItem(aPath,0); |
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109 } |
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110 |
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111 //mCacheManager->RemoveVisalItem(0, aCount, aPath ); |
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112 |
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113 // insert new nodes |
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114 mCacheManager->CreateNodes( 0, aCount, aPath ); |
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115 |
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116 int modelCount = mCacheManager->ExpandedNodeCount(); |
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117 // update alf model accordingly |
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118 if(mDataWindow.IsWindowEnabled()) |
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119 { |
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120 if(modelCountBefore == modelCount) |
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121 { |
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122 Update(0,aCount,aPath); |
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123 } |
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124 else |
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125 { |
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126 ModelCountChanged(modelCountBefore,modelCount); |
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127 } |
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128 } |
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129 } |
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130 |
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131 // --------------------------------------------------------------------------- |
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132 // SetData |
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133 // --------------------------------------------------------------------------- |
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134 // |
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135 void MulPullMode::SetData(int aIndex, auto_ptr<MulVisualItem> aVisualItem,const MulDataPath& aPath) |
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136 { |
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137 MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::SetData()"); |
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138 |
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139 __MUL_ASSERT( aIndex >= 0 && aIndex < Count(aPath),_L("Invalid Argument.")); |
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140 |
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141 //Set data to model |
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142 if( mDataWindow.IsItemInDataWindow( aIndex ) ) |
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143 { |
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144 MulPushMode::SetData( aIndex, aVisualItem, aPath ); |
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145 } |
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146 } |
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147 |
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148 // --------------------------------------------------------------------------- |
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149 // SetTemplate |
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150 // --------------------------------------------------------------------------- |
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151 // |
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152 void MulPullMode::SetTemplate( mulwidget::TLogicalTemplate aTemplateId ) |
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153 { |
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154 mDefaultTemplate = aTemplateId; |
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155 |
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156 MulDataPath path ; |
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157 if( mDataWindow.IsWindowEnabled() ) |
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158 { |
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159 int topOffset = mDataWindow.TopOffset(); |
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160 int bottomOffset = mDataWindow.BottomOffset(); |
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161 for( int i = topOffset ; i <= bottomOffset ; i++ ) |
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162 { |
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163 MulPushMode::SetTemplate( i, mDefaultTemplate, path); |
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164 } |
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165 |
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166 int rearTopOffset = mDataWindow.RearTopOffset(); |
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167 int rearBottomOffset = mDataWindow.RearBottomOffset(); |
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168 for( int i = rearTopOffset; i <= rearBottomOffset && i >= 0 ; i++ ) |
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169 { |
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170 MulPushMode::SetTemplate( i, mDefaultTemplate, path); |
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171 } |
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172 } |
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173 } |
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174 |
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175 // --------------------------------------------------------------------------- |
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176 // WindowSiftedDown |
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177 // --------------------------------------------------------------------------- |
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178 // |
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179 void MulPullMode::WindowSiftedDown() |
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180 { |
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181 MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::WindowSiftedDown"); |
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182 |
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183 // If the complete datawindow is invalid. |
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184 // if(mDataWindow.TopOffset() - mDataWindow.OldTopOffset() > mDataWindow.ActualBufferSize() |
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185 // && mDataWindow.OldTopOffset() != KNotInitialized) |
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186 //if(mDataWindow.TopOffset() - mDataWindow.OldTopOffset() > mDataWindow.ActualBufferSize() ) |
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187 int oldTopOffset = mDataWindow.OldTopOffset(); |
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188 int oldBottomOffset = mDataWindow.OldBottomOffset(); |
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189 int topOffset = mDataWindow.TopOffset(); |
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190 int bottomOffset = mDataWindow.BottomOffset(); |
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191 int oldRearTopOffset = mDataWindow.OldRearTopOffset(); |
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192 int oldRearBottomOffset = mDataWindow.OldRearBottomOffset(); |
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193 |
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194 if( ( oldTopOffset == KNotInitialized && oldBottomOffset == KNotInitialized ) || |
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195 ( topOffset - oldTopOffset >= mDataWindow.ActualBufferSize()) || |
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196 ( oldRearTopOffset != KNotInitialized && |
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197 ( topOffset - oldTopOffset >= ( mDataWindow.WindowSize() + mDataWindow.BufferSize() ) ) |
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198 ) ) |
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199 { |
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200 //remove old data from cache |
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201 for( int i = oldTopOffset ; i <= oldBottomOffset && i >= 0 ; i++ ) |
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202 { |
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203 mCacheManager->RemoveVisualItem( i ); |
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204 } |
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205 |
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206 for( int i = oldRearTopOffset; i <= oldRearBottomOffset && i >= 0 ; i++ ) |
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207 { |
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208 mCacheManager->RemoveVisualItem( i ); |
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209 } |
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210 |
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211 int startIndex = topOffset; |
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212 int range = bottomOffset - startIndex + 1; |
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213 |
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214 MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range); |
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215 ProvideData(startIndex,range); |
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216 } |
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217 else |
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218 { |
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219 //remove extra items from top and add new items at bottom |
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220 for( int i = oldTopOffset ; i >= 0 && i < topOffset ; i++ ) |
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221 { |
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222 //remove item from top |
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223 mCacheManager->RemoveVisualItem( i ); |
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224 } |
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225 |
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226 int startIndex = oldBottomOffset +1 ; |
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227 int range = ( bottomOffset - oldBottomOffset ); |
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228 MUL_LOG_INFO2("MUL::MulPullModeImpl::DataWindowUpdated ProvideData startIndex:%d,range:%d",startIndex,range); |
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229 ProvideData(startIndex,range); |
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230 } |
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231 } |
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232 |
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233 // --------------------------------------------------------------------------- |
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234 // WindowSiftedUp |
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235 // --------------------------------------------------------------------------- |
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236 // |
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237 void MulPullMode::WindowSiftedUp() |
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238 { |
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239 MUL_LOG_ENTRY_EXIT("MUL::MulPullModeImpl::WindowSiftedUp "); |
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240 // If the complete datawindow is invalid. |
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241 // if(mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() > mDataWindow.ActualBufferSize() |
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242 // && mDataWindow.OldBottomOffset() != KNotInitialized) |
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243 |
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244 if( mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() >= mDataWindow.ActualBufferSize() || |
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245 ( mDataWindow.OldRearBottomOffset() != KNotInitialized && |
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246 ( mDataWindow.OldBottomOffset() - mDataWindow.BottomOffset() >= ( mDataWindow.WindowSize() + mDataWindow.BufferSize() ) ) |
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247 ) ) |
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248 { |
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249 //remove old data from cache |
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250 for( int i = mDataWindow.OldTopOffset() ; i <= mDataWindow.OldBottomOffset() && i >= 0 ; i++ ) |
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251 { |
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252 mCacheManager->RemoveVisualItem( i ); |
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253 } |
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254 |
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255 for( int i = mDataWindow.OldRearTopOffset( ); i <= mDataWindow.OldRearBottomOffset() && i >= 0 ; i++ ) |
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256 { |
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257 mCacheManager->RemoveVisualItem( i ); |
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258 } |
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259 |
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260 int startIndex = mDataWindow.TopOffset(); |
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261 int range = mDataWindow.BottomOffset() - startIndex + 1; |
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262 |
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263 MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range); |
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264 ProvideData(startIndex,range); |
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265 } |
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266 else |
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267 { |
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268 //remove extra items from bottom and add at top |
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269 for( int i = mDataWindow.BottomOffset() ; i < mDataWindow.OldBottomOffset() ; i++ ) |
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270 { |
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271 mCacheManager->RemoveVisualItem(i+1); |
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272 } |
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273 |
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274 int startIndex = mDataWindow.TopOffset(); |
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275 int range = mDataWindow.OldTopOffset() - mDataWindow.TopOffset(); |
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276 |
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277 MUL_LOG_INFO2("MUL::MulPullModeImpl::WindowSiftedUp ProvideData startIndex:%d,range:%d",startIndex,range); |
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278 ProvideData(startIndex,range); |
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279 } |
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280 } |
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281 |
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282 // --------------------------------------------------------------------------- |
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283 // ProvideData |
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284 // --------------------------------------------------------------------------- |
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285 // |
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286 void MulPullMode::ProvideData(int aStartIndex, int aRange) |
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287 { |
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288 //call provide data for visible window first then for buffer |
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289 if( aRange > 0 ) |
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290 { |
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291 // check if the current higlighted item is there in the data asked for |
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292 if( mDataWindow.Highlight() >= aStartIndex && |
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293 mDataWindow.Highlight() < aStartIndex+aRange ) |
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294 { |
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295 mModelProvider->ProvideData( mDataWindow.Highlight(), 1 ,MulDataPath(),true ); |
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296 } |
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297 //__MUL_ASSERT( ( aRange % 18 ) == 0, _L("Invalid Renage") ); |
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298 //check that visible data is there in provide data call |
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299 if( aStartIndex < mDataWindow.TopWindowOffset() && |
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300 aStartIndex+aRange > mDataWindow.BottomWindowOffset() ) |
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301 { |
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302 { |
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303 //request visible item |
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304 int startIndex = mDataWindow.TopWindowOffset(); |
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305 int range = ( mDataWindow.BottomWindowOffset() - mDataWindow.TopWindowOffset() ) + 1 ; |
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306 |
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307 MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData visible buffer startIndex:%d,range:%d",startIndex,range); |
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308 mModelProvider->ProvideData(startIndex, range ,MulDataPath() ); |
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309 } |
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310 |
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311 { |
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312 //request item from top |
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313 int startIndex = aStartIndex; |
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314 int range = mDataWindow.TopWindowOffset() - startIndex; |
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315 |
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316 MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData top buffer startIndex:%d,range:%d",startIndex,range); |
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317 mModelProvider->ProvideData(startIndex, range ,MulDataPath() ); |
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318 } |
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319 |
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320 { |
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321 //request item from bottom |
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322 int startIndex = mDataWindow.BottomWindowOffset() + 1 ; |
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323 int range = ( aStartIndex + aRange - 1) - mDataWindow.BottomWindowOffset(); |
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324 |
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325 MUL_LOG_INFO2("MUL::MulPullModeImpl::ProvideData bottom buffer startIndex:%d,range:%d",startIndex,range); |
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326 mModelProvider->ProvideData(startIndex, range ,MulDataPath() ); |
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327 } |
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328 } |
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329 else |
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330 { |
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331 //there is not provide data pending for visible window |
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332 mModelProvider->ProvideData(aStartIndex, aRange ,MulDataPath() ); |
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333 } |
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334 } |
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335 } |
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336 |
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337 // --------------------------------------------------------------------------- |
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338 // ModelCountChanged |
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339 // --------------------------------------------------------------------------- |
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340 // |
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341 void MulPullMode::ModelCountChanged(int aOldCount, int aNewCount) |
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342 { |
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343 MUL_LOG_ENTRY_EXIT("MUL::MulPullMode::AdjustOffsetAndData()"); |
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344 |
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345 MUL_LOG_INFO1("MUL::MulPullMode::AdjustAlfModelData() modelCount:%d", aNewCount ); |
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346 |
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347 MulPushMode::ModelCountChanged( aOldCount, aNewCount ); |
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348 |
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349 // fetch data for the new buffers |
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350 if( mDataWindow.RearTopOffset() != KNotInitialized && |
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351 mDataWindow.RearBottomOffset() != KNotInitialized ) |
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352 { |
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353 if(mDataWindow.RearTopOffset() == 0) |
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354 { |
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355 //updating all buffer |
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356 ProvideData( mDataWindow.RearTopOffset() , mDataWindow.RearBottomOffset() - |
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357 mDataWindow.RearTopOffset() + 1); |
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358 |
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359 ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() - |
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360 mDataWindow.TopOffset() + 1); |
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361 } |
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362 else |
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363 { |
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364 ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() - |
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365 mDataWindow.TopOffset() + 1); |
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366 |
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367 ProvideData( mDataWindow.RearTopOffset() , mDataWindow.RearBottomOffset() - |
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368 mDataWindow.RearTopOffset() + 1); |
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369 } |
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370 } |
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371 else |
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372 { |
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373 ProvideData( mDataWindow.TopOffset() , mDataWindow.BottomOffset() - |
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374 mDataWindow.TopOffset() + 1); |
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375 } |
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376 } |
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377 |
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378 // --------------------------------------------------------------------------- |
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379 // DataWindowUpdated |
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380 // --------------------------------------------------------------------------- |
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381 // |
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382 void MulPullMode::DataWindowUpdated() |
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383 { |
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384 //here sequence of Function call are important dont change function call sequences |
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385 //UpdateLoopBuffer must be called first |
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386 if( mDataWindow.RearTopOffset() != KNotInitialized && |
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387 mDataWindow.OldRearTopOffset() != KNotInitialized ) //there is looping on |
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388 { |
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389 UpdateLoopBuffer(); |
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390 //returning from here only dont need to do any thing else |
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391 return ; |
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392 } |
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393 //window shifted down |
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394 if( mDataWindow.OldBottomOffset() < mDataWindow.BottomOffset() ) |
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395 { |
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396 WindowSiftedDown(); |
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397 } |
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398 //window shifted up |
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399 else if( mDataWindow.OldTopOffset() > mDataWindow.TopOffset()) |
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400 { |
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401 WindowSiftedUp(); |
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402 } |
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403 |
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404 //add buffer in looping case |
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405 if(mDataWindow.RearTopOffset() != KNotInitialized && mDataWindow.RearBottomOffset() != KNotInitialized) //rear offset changed |
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406 { |
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407 // here ask data from top to bottom |
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408 int startIndex = mDataWindow.RearTopOffset() ; |
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409 int range = mDataWindow.RearBottomOffset() - mDataWindow.RearTopOffset() + 1; |
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410 |
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411 MUL_LOG_INFO2("MUL::MulPullMode::DataWindowUpdated startIndex:%d,range:%d",startIndex,range); |
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412 ProvideData(startIndex,range); |
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413 } |
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414 } |
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415 |
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416 // --------------------------------------------------------------------------- |
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417 // UpdateLoopBuffer |
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418 // --------------------------------------------------------------------------- |
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419 // |
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420 void MulPullMode::UpdateLoopBuffer() |
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421 { |
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422 MUL_LOG_ENTRY_EXIT("MUL::MulPushMode::UpdateLoopBuffer"); |
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423 if( mDataWindow.RearTopOffset() < mDataWindow.OldRearTopOffset() ) |
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424 { |
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425 int startIndex = mDataWindow.TopOffset(); |
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426 int range = mDataWindow.OldRearTopOffset() - startIndex; |
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427 |
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428 MUL_LOG_INFO2("MUL::MulPushMode::UpdateLoopBuffer startIndex:%d,range:%d",startIndex,range); |
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429 ProvideData(startIndex,range); |
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430 } |
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431 else |
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432 { |
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433 int startIndex = mDataWindow.OldRearBottomOffset()+1 ; |
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434 int range = mDataWindow.BottomOffset() - startIndex + 1; |
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435 |
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436 MUL_LOG_INFO2("MUL::MulPushMode::UpdateLoopBuffer startIndex:%d,range:%d",startIndex,range); |
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437 ProvideData(startIndex,range); |
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438 } |
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439 } |
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440 |
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441 // --------------------------------------------------------------------------- |
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442 // Item |
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443 // --------------------------------------------------------------------------- |
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444 // |
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445 const MulVisualItem& MulPullMode::Item( int aAbsoluteIndex ) |
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446 { |
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447 MulVisualItem* visualItem = mCacheManager->Data( aAbsoluteIndex ); |
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448 if( !visualItem ) |
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449 { |
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450 if( mDataWindow.IsItemInDataWindow(aAbsoluteIndex) ) |
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451 { |
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452 std::auto_ptr<MulVisualItem> dummyItem = MulModelUtility::CreateVisualItem( Template() ); |
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453 visualItem = dummyItem.get(); |
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454 mCacheManager->AddVisualItem(dummyItem, MulDataPath() ,aAbsoluteIndex ); |
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455 } |
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456 else |
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457 { |
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458 throw std::invalid_argument(KInvalidArgument); |
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459 } |
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460 } |
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461 return *visualItem; |
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462 } |
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463 |
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464 |
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465 } // namespace Alf |
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466 |
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467 //End of file |