2 * This file is part of family-shop-mgr.
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4 * family-shop-mgr is free software: you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation, either version 3 of the License, or
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7 * (at your option) any later version.
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9 * family-shop-mgr is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
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14 * You should have received a copy of the GNU General Public License
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15 * along with family-shop-mgr. If not, see <http://www.gnu.org/licenses/>.
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17 * Author: Unai IRIGOYEN
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22 #include "ShoppingTreeModel.h"
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24 #include "ShoppingTreeItem.h"
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26 #include <QApplication>
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29 /*******************************************************************/
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30 ShoppingTreeModel::ShoppingTreeModel(const QString &xmlFileName,
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32 QAbstractItemModel(parent), m_document("ShoppingList")
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38 m_xmlFileName = QApplication::applicationDirPath() + "/" + xmlFileName;
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39 QFile file(m_xmlFileName);
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40 if(!file.open(QIODevice::ReadOnly))
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43 if(!m_document.setContent(&file, true, &error, &errLine, &errColumn))
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45 emit xmlParseError(error, errLine, errColumn);
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51 QDomElement root = m_document.documentElement();
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52 if(root.tagName() != "shoppingList" || !root.hasAttribute("version"))
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54 emit invalidDocument();
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57 else if(root.attribute("version") == "1.0")
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59 // set column titles
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60 QVector<QVariant> rootData;
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61 rootData << "Category/Item name"
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62 << "Quantity" << "Store";
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64 rootItem = new ShoppingTreeItem(rootData);
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68 // upgrade document version if possible
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72 QDomElement child = root.firstChildElement("category");
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73 while(!child.isNull())
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75 // Parse all categories
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76 parseCategoryElement(child);
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77 child = child.nextSiblingElement("category");
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80 child = root.firstChildElement("item");
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81 while(!child.isNull())
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83 // parse all items which don't have category
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84 rootItem->insertChildren(
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85 rootItem->childCount(), 1,
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86 rootItem->columnCount());
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87 QVector<QVariant> columnData =
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88 getColumnsFromItemElement(child);
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89 rootItem->child(rootItem->childCount() - 1)->
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90 setItemType(ShoppingTreeItem::Item);
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91 for(int column = 0; column < columnData.size(); column++)
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93 rootItem->child(rootItem->childCount() - 1)->setData(column, columnData[column]);
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95 m_domElementForItem.insert(rootItem->child(rootItem->childCount() - 1),
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97 child = child.nextSiblingElement("item");
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100 QHashIterator<ShoppingTreeItem*,QDomElement> i(m_domElementForItem);
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104 connect(i.key(), SIGNAL(childInserted(ShoppingTreeItem*)), this,
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105 SLOT(registerInsertedChild(ShoppingTreeItem*)));
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106 connect(i.key(), SIGNAL(childRemoved(ShoppingTreeItem*)), this,
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107 SLOT(deleteRemovedChild(ShoppingTreeItem*)));
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111 /*******************************************************************/
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112 ShoppingTreeModel::~ShoppingTreeModel()
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117 /*******************************************************************/
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118 QVariant ShoppingTreeModel::data(const QModelIndex &index, int role) const
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120 if(!index.isValid())
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123 if(role != Qt::DisplayRole && role != Qt::EditRole)
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126 ShoppingTreeItem *item = getItem(index);
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127 return item->data(index.column());
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130 /*******************************************************************/
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131 Qt::ItemFlags ShoppingTreeModel::flags(const QModelIndex &index) const
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133 if(!index.isValid())
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136 return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
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139 /*******************************************************************/
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140 ShoppingTreeItem *ShoppingTreeModel::getItem(const QModelIndex &index) const
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142 if(index.isValid()){
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143 ShoppingTreeItem *item = static_cast<ShoppingTreeItem*>(index.internalPointer());
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144 if(item) return item;
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150 /*******************************************************************/
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151 QVariant ShoppingTreeModel::headerData(int section, Qt::Orientation orientation,
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154 if(orientation == Qt::Horizontal && role == Qt::DisplayRole)
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155 return rootItem->data(section);
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160 /*******************************************************************/
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161 QModelIndex ShoppingTreeModel::index(int row, int column, const QModelIndex &parent) const
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163 if(parent.isValid() && parent.column() != 0)
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164 return QModelIndex();
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166 ShoppingTreeItem *parentItem = getItem(parent);
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168 ShoppingTreeItem *childItem = parentItem->child(row);
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170 return createIndex(row, column, childItem);
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172 return QModelIndex();
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175 /*******************************************************************/
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176 bool ShoppingTreeModel::insertColumns(int position, int columns, const QModelIndex &parent)
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180 beginInsertColumns(parent, position, position + columns - 1);
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181 success = rootItem->insertColumns(position, columns);
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182 endInsertColumns();
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187 /*******************************************************************/
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188 bool ShoppingTreeModel::insertRows(int position, int rows, const QModelIndex &parent)
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190 ShoppingTreeItem *parentItem = getItem(parent);
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193 beginInsertRows(parent, position, position + rows - 1);
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194 success = parentItem->insertChildren(position, rows, rootItem->columnCount());
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200 /*******************************************************************/
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201 QModelIndex ShoppingTreeModel::parent(const QModelIndex &index) const
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203 if(!index.isValid())
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204 return QModelIndex();
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206 ShoppingTreeItem *childItem = getItem(index);
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207 ShoppingTreeItem *parentItem = childItem->parent();
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209 if(parentItem == rootItem)
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210 return QModelIndex();
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212 return createIndex(parentItem->childNumber(), 0, parentItem);
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215 /*******************************************************************/
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216 bool ShoppingTreeModel::removeColumns(int position, int columns, const QModelIndex &parent)
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220 beginRemoveColumns(parent, position, position + columns - 1);
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221 success = rootItem->removeColumns(position, columns);
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222 endRemoveColumns();
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224 if (rootItem->columnCount() == 0)
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225 removeRows(0, rowCount());
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230 /*******************************************************************/
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231 bool ShoppingTreeModel::removeRows(int position, int rows, const QModelIndex &parent)
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233 ShoppingTreeItem *parentItem = getItem(parent);
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236 beginRemoveRows(parent, position, position + rows - 1);
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237 success = parentItem->removeChildren(position, rows);
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243 /*******************************************************************/
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244 int ShoppingTreeModel::rowCount(const QModelIndex &parent) const
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246 ShoppingTreeItem *parentItem = getItem(parent);
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248 return parentItem->childCount();
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251 /*******************************************************************/
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252 int ShoppingTreeModel::columnCount(const QModelIndex &parent) const
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254 return rootItem->columnCount();
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257 /*******************************************************************/
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258 bool ShoppingTreeModel::setData(const QModelIndex &index, const QVariant &value, int role)
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260 if(role != Qt::EditRole)
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263 ShoppingTreeItem *item = getItem(index);
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265 // only "items" have more than one editable column
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266 if(index.column() != 0 && m_domElementForItem.value(item).tagName() != "item")
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270 bool result = (item->setData(index.column(),value) &&
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271 updateDomElement(item, index.column()));
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274 emit dataChanged(index, index);
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279 /*******************************************************************/
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280 bool ShoppingTreeModel::setHeaderData(int section, Qt::Orientation orientation,
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281 const QVariant &value, int role)
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283 if(role != Qt::EditRole || orientation != Qt::Horizontal)
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286 bool result = rootItem->setData(section, value);
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289 emit headerDataChanged(orientation, section, section);
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294 /*******************************************************************/
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295 void ShoppingTreeModel::registerInsertedChild(ShoppingTreeItem *item)
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297 // wait until item type is defined
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298 item->waitItemTypeDefinition();
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300 QDomElement parentElement = m_domElementForItem.value(item->parent());
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301 QDomElement element;
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302 if(item->getItemType() == ShoppingTreeItem::Category)
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303 element = m_document.createElement("category");
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304 else if(item->getItemType() == ShoppingTreeItem::Item)
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305 element = m_document.createElement("item");
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309 parentElement.appendChild(element);
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311 m_domElementForItem.insert(item, element);
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312 connect(item, SIGNAL(childInserted(ShoppingTreeItem*)), this,
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313 SLOT(registerInsertedChild(ShoppingTreeItem*)));
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314 connect(item, SIGNAL(childRemoved(ShoppingTreeItem*)), this,
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315 SLOT(deleteRemovedChild(ShoppingTreeItem*)));
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318 /*******************************************************************/
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319 void ShoppingTreeModel::deleteRemovedChild(ShoppingTreeItem *item)
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321 QDomElement element = m_domElementForItem.value(item);
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322 QDomNode parentNode = element.parentNode();
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323 parentNode.removeChild(element);
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325 m_domElementForItem.remove(item);
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328 /*******************************************************************/
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329 void ShoppingTreeModel::parseCategoryElement(const QDomElement &element,
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330 ShoppingTreeItem *parentItem)
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332 // if parent is null then add category to root
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334 parentItem = rootItem;
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336 ShoppingTreeItem *item;
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337 QDomElement child = element.firstChildElement("title");
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338 QString title = child.text();
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339 if(!title.isEmpty())
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341 parentItem->insertChildren(parentItem->childCount(), 1,
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342 rootItem->columnCount());
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344 parentItem->child(parentItem->childCount() - 1)->
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345 setItemType(ShoppingTreeItem::Category);
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346 parentItem->child(parentItem->childCount() - 1)->setData(0, title);
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347 m_domElementForItem.insert(parentItem->child(parentItem->childCount() - 1),
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349 item = parentItem->child(parentItem->childCount() - 1);
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353 emit invalidDocument();
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357 // add each sub category and item to the tree
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358 child = child.nextSiblingElement();
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359 while(!child.isNull())
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361 if(child.tagName() == "category")
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363 parseCategoryElement(child, parentItem);
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365 else if(child.tagName() == "item")
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367 item->insertChildren(
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368 item->childCount(), 1,
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369 rootItem->columnCount());
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370 QVector<QVariant> columnData =
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371 getColumnsFromItemElement(child);
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372 item->child(item->childCount() - 1)->setItemType(ShoppingTreeItem::Item);
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373 for(int column = 0; column < columnData.size(); column++)
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375 item->child(item->childCount() - 1)->setData(column, columnData[column]);
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377 m_domElementForItem.insert(item->child(item->childCount() - 1),
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382 emit invalidDocument();
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386 child = child.nextSiblingElement();
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390 /*******************************************************************/
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391 QVector<QVariant> ShoppingTreeModel::getColumnsFromItemElement(const QDomElement &element)
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393 QVector<QVariant> data;
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394 QString title = element.firstChildElement("title").text();
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395 int quantity = element.firstChildElement("quantity").text().toInt();
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396 QString store = element.firstChildElement("store").text();
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397 if(title.isEmpty() || quantity < 0)
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399 emit invalidDocument();
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403 data << title << quantity << store;
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407 /*******************************************************************/
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408 bool ShoppingTreeModel::updateDomElement(ShoppingTreeItem *item, int column)
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410 QDomElement element = m_domElementForItem.value(item);
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412 if(element.isNull())
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416 switch(column)/*******************************************************************/
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420 QDomElement oldTitleElement = element.firstChildElement("title");
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421 QDomElement newTitleElement = m_document.createElement("title");
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423 QDomText newTitleText = m_document.createTextNode(item->data(0).toString());
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424 newTitleElement.appendChild(newTitleText);
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426 element.replaceChild(newTitleElement, oldTitleElement);
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432 QDomElement oldQuantityElement = element.firstChildElement("quantity");
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433 QDomElement newQuantityElement = m_document.createElement("quantity");
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435 QDomText newQuantityText = m_document.createTextNode(item->data(1).toString());
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436 newQuantityElement.appendChild(newQuantityText);
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438 element.replaceChild(newQuantityElement, oldQuantityElement);
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444 QDomElement oldStoreElement = element.firstChildElement("store");
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445 QDomElement newStoreElement = m_document.createElement("store");
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447 QDomText newStoreText = m_document.createTextNode(item->data(0).toString());
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448 newStoreElement.appendChild(newStoreText);
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450 element.replaceChild(newStoreElement, oldStoreElement);
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463 /*******************************************************************/
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464 void ShoppingTreeModel::updateXmlFile() const
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466 QFile xmlFile(m_xmlFileName);
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468 xmlFile.open(QIODevice::WriteOnly);
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469 xmlFile.write(m_document.toByteArray(4));
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