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 ShoppingTreeModel::ShoppingTreeModel(const QString &xmlFileName,
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31 QAbstractItemModel(parent), m_document("ShoppingList")
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37 m_xmlFileName = QApplication::applicationDirPath() + "/" + xmlFileName;
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38 QFile file(m_xmlFileName);
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39 if(!file.open(QIODevice::ReadOnly))
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42 if(!m_document.setContent(&file, true, &error, &errLine, &errColumn))
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44 emit xmlParseError(error, errLine, errColumn);
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50 QDomElement root = m_document.documentElement();
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51 if(root.tagName() != "shoppingList" || !root.hasAttribute("version"))
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53 emit invalidDocument();
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56 else if(root.attribute("version") == "1.0")
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58 // set column titles
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59 QVector<QVariant> rootData;
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60 rootData << "Category/Item name"
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61 << "Quantity" << "Store";
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63 rootItem = new ShoppingTreeItem(rootData);
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67 // upgrade document version if possible
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71 QDomElement child = root.firstChildElement("category");
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72 while(!child.isNull())
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74 // Parse all categories
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75 parseCategoryElement(child);
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76 child = child.nextSiblingElement("category");
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79 child = root.firstChildElement("item");
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80 while(!child.isNull())
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82 // parse all items which don't have category
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83 rootItem->insertChildren(
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84 rootItem->childCount(), 1,
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85 rootItem->columnCount());
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86 QVector<QVariant> columnData =
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87 getColumnsFromItemElement(child);
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88 rootItem->child(rootItem->childCount() - 1)->
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89 setItemType(ShoppingTreeItem::Item);
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90 for(int column = 0; column < columnData.size(); column++)
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92 rootItem->child(rootItem->childCount() - 1)->setData(column, columnData[column]);
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94 m_domElementForItem.insert(rootItem->child(rootItem->childCount() - 1),
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98 QHashIterator<ShoppingTreeItem*,QDomElement> i(m_domElementForItem);
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102 connect(i.key(), SIGNAL(childInserted(ShoppingTreeItem*)), this,
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103 SLOT(registerInsertedChild(ShoppingTreeItem*)));
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104 connect(i.key(), SIGNAL(childRemoved(ShoppingTreeItem*)), this,
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105 SLOT(deleteRemovedChild(ShoppingTreeItem*)));
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109 ShoppingTreeModel::~ShoppingTreeModel()
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114 QVariant ShoppingTreeModel::data(const QModelIndex &index, int role) const
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116 if(!index.isValid())
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119 if(role != Qt::DisplayRole && role != Qt::EditRole)
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122 ShoppingTreeItem *item = getItem(index);
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123 return item->data(index.column());
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126 Qt::ItemFlags ShoppingTreeModel::flags(const QModelIndex &index) const
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128 if(!index.isValid())
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131 return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
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134 ShoppingTreeItem *ShoppingTreeModel::getItem(const QModelIndex &index) const
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136 if(index.isValid()){
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137 ShoppingTreeItem *item = static_cast<ShoppingTreeItem*>(index.internalPointer());
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138 if(item) return item;
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144 QVariant ShoppingTreeModel::headerData(int section, Qt::Orientation orientation,
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147 if(orientation == Qt::Horizontal && role == Qt::DisplayRole)
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148 return rootItem->data(section);
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153 QModelIndex ShoppingTreeModel::index(int row, int column, const QModelIndex &parent) const
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155 if(parent.isValid() && parent.column() != 0)
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156 return QModelIndex();
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158 ShoppingTreeItem *parentItem = getItem(parent);
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160 ShoppingTreeItem *childItem = parentItem->child(row);
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162 return createIndex(row, column, childItem);
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164 return QModelIndex();
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167 bool ShoppingTreeModel::insertColumns(int position, int columns, const QModelIndex &parent)
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171 beginInsertColumns(parent, position, position + columns - 1);
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172 success = rootItem->insertColumns(position, columns);
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173 endInsertColumns();
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178 bool ShoppingTreeModel::insertRows(int position, int rows, const QModelIndex &parent)
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180 ShoppingTreeItem *parentItem = getItem(parent);
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183 beginInsertRows(parent, position, position + rows - 1);
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184 success = parentItem->insertChildren(position, rows, rootItem->columnCount());
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190 QModelIndex ShoppingTreeModel::parent(const QModelIndex &index) const
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192 if(!index.isValid())
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193 return QModelIndex();
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195 ShoppingTreeItem *childItem = getItem(index);
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196 ShoppingTreeItem *parentItem = childItem->parent();
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198 if(parentItem == rootItem)
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199 return QModelIndex();
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201 return createIndex(parentItem->childNumber(), 0, parentItem);
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204 bool ShoppingTreeModel::removeColumns(int position, int columns, const QModelIndex &parent)
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208 beginRemoveColumns(parent, position, position + columns - 1);
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209 success = rootItem->removeColumns(position, columns);
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210 endRemoveColumns();
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212 if (rootItem->columnCount() == 0)
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213 removeRows(0, rowCount());
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218 bool ShoppingTreeModel::removeRows(int position, int rows, const QModelIndex &parent)
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220 ShoppingTreeItem *parentItem = getItem(parent);
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223 beginRemoveRows(parent, position, position + rows - 1);
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224 success = parentItem->removeChildren(position, rows);
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230 int ShoppingTreeModel::rowCount(const QModelIndex &parent) const
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232 ShoppingTreeItem *parentItem = getItem(parent);
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234 return parentItem->childCount();
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237 int ShoppingTreeModel::columnCount(const QModelIndex &parent) const
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239 return rootItem->columnCount();
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241 bool ShoppingTreeModel::setData(const QModelIndex &index, const QVariant &value, int role)
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243 if(role != Qt::EditRole)
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246 ShoppingTreeItem *item = getItem(index);
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248 // only "items" have more than one editable column
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249 if(index.column() != 0 && m_domElementForItem.value(item).tagName() != "item")
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253 bool result = (item->setData(index.column(),value) &&
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254 updateDomElement(item, index.column()));
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257 emit dataChanged(index, index);
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262 bool ShoppingTreeModel::setHeaderData(int section, Qt::Orientation orientation,
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263 const QVariant &value, int role)
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265 if(role != Qt::EditRole || orientation != Qt::Horizontal)
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268 bool result = rootItem->setData(section, value);
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271 emit headerDataChanged(orientation, section, section);
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276 void ShoppingTreeModel::registerInsertedChild(ShoppingTreeItem *item)
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278 // wait until item type is defined
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279 item->waitItemTypeDefinition();
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281 QDomElement parentElement = m_domElementForItem.value(item->parent());
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282 QDomElement element;
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283 if(item->getItemType() == ShoppingTreeItem::Category)
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284 element = m_document.createElement("category");
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285 else if(item->getItemType() == ShoppingTreeItem::Item)
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286 element = m_document.createElement("item");
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290 parentElement.appendChild(element);
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292 m_domElementForItem.insert(item, element);
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293 connect(item, SIGNAL(childInserted(ShoppingTreeItem*)), this,
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294 SLOT(registerInsertedChild(ShoppingTreeItem*)));
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295 connect(item, SIGNAL(childRemoved(ShoppingTreeItem*)), this,
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296 SLOT(deleteRemovedChild(ShoppingTreeItem*)));
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299 void ShoppingTreeModel::deleteRemovedChild(ShoppingTreeItem *item)
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301 QDomElement element = m_domElementForItem.value(item);
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302 QDomNode parentNode = element.parentNode();
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303 parentNode.removeChild(element);
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305 m_domElementForItem.remove(item);
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308 void ShoppingTreeModel::parseCategoryElement(const QDomElement &element,
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309 ShoppingTreeItem *parentItem)
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311 // if parent is null then add category to root
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313 parentItem = rootItem;
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315 ShoppingTreeItem *item;
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316 QString title = element.firstChildElement("title").text();
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317 if(!title.isEmpty())
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319 parentItem->insertChildren(parentItem->childCount(), 1,
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320 rootItem->columnCount());
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322 parentItem->child(parentItem->childCount() - 1)->
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323 setItemType(ShoppingTreeItem::Category);
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324 parentItem->child(parentItem->childCount() - 1)->setData(0, title);
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325 m_domElementForItem.insert(parentItem->child(parentItem->childCount() - 1),
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327 item = parentItem->child(parentItem->childCount() - 1);
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331 emit invalidDocument();
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335 // add each sub category and item to the tree
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336 QDomElement child = element.firstChildElement();
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337 while(!child.isNull())
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339 if(child.tagName() == "category")
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341 parseCategoryElement(child, parentItem);
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343 else if(child.tagName() == "item")
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345 item->insertChildren(
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346 item->childCount(), 1,
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347 rootItem->columnCount());
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348 QVector<QVariant> columnData =
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349 getColumnsFromItemElement(child);
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350 item->child(item->childCount() - 1)->setItemType(ShoppingTreeItem::Item);
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351 for(int column = 0; column < columnData.size(); column++)
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353 item->child(item->childCount() - 1)->setData(column, columnData[column]);
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355 m_domElementForItem.insert(item->child(item->childCount() - 1),
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360 emit invalidDocument();
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364 child = child.nextSiblingElement();
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368 QVector<QVariant> ShoppingTreeModel::getColumnsFromItemElement(const QDomElement &element)
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370 QVector<QVariant> data;
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371 QString title = element.firstChildElement("title").text();
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372 int quantity = element.firstChildElement("quantity").text().toInt();
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373 QString store = element.firstChildElement("store").text();
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374 if(title.isEmpty() || quantity < 0)
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376 emit invalidDocument();
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380 data << title << quantity << store;
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384 bool ShoppingTreeModel::updateDomElement(ShoppingTreeItem *item, int column)
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386 QDomElement element = m_domElementForItem.value(item);
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388 if(element.isNull())
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396 QDomElement oldTitleElement = element.firstChildElement("title");
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397 QDomElement newTitleElement = m_document.createElement("title");
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399 QDomText newTitleText = m_document.createTextNode(item->data(0).toString());
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400 newTitleElement.appendChild(newTitleText);
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402 element.replaceChild(newTitleElement, oldTitleElement);
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408 QDomElement oldQuantityElement = element.firstChildElement("quantity");
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409 QDomElement newQuantityElement = m_document.createElement("quantity");
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411 QDomText newQuantityText = m_document.createTextNode(item->data(1).toString());
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412 newQuantityElement.appendChild(newQuantityText);
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414 element.replaceChild(newQuantityElement, oldQuantityElement);
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420 QDomElement oldStoreElement = element.firstChildElement("store");
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421 QDomElement newStoreElement = m_document.createElement("store");
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423 QDomText newStoreText = m_document.createTextNode(item->data(0).toString());
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424 newStoreElement.appendChild(newStoreText);
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426 element.replaceChild(newStoreElement, oldStoreElement);
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439 void ShoppingTreeModel::updateXmlFile() const
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441 QFile xmlFile(m_xmlFileName);
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443 xmlFile.open(QIODevice::WriteOnly);
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444 xmlFile.write(m_document.toByteArray(4));
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