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)->
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94 setData(column, columnData[column]);
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96 m_domElementForItem.insert(rootItem->child(rootItem->childCount() - 1),
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98 child = child.nextSiblingElement("item");
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102 connect(rootItem, SIGNAL(childItemSet(ShoppingTreeItem*)), this,
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103 SLOT(registerInsertedChild(ShoppingTreeItem*)));
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104 connect(rootItem, SIGNAL(childRemoved(ShoppingTreeItem*)), this,
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105 SLOT(deleteRemovedChild(ShoppingTreeItem*)));
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107 QHashIterator<ShoppingTreeItem*,QDomElement> i(m_domElementForItem);
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111 connect(i.key(), SIGNAL(childItemSet(ShoppingTreeItem*)), this,
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112 SLOT(registerInsertedChild(ShoppingTreeItem*)));
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113 connect(i.key(), SIGNAL(childRemoved(ShoppingTreeItem*)), this,
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114 SLOT(deleteRemovedChild(ShoppingTreeItem*)));
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118 /*******************************************************************/
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119 ShoppingTreeModel::~ShoppingTreeModel()
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124 /*******************************************************************/
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125 bool ShoppingTreeModel::addCategory(QString name)
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127 QModelIndex parent = QModelIndex();
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129 if (!this->insertRow(parent.row()+1, parent))
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133 QModelIndex child = this->index(parent.row()+1, column, parent);
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134 ShoppingTreeItem* item = this->getItem(child);
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135 item->setItemType(ShoppingTreeItem::Category);
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136 this->setData(child, QVariant(name), Qt::EditRole);
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140 /*******************************************************************/
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141 bool ShoppingTreeModel::addSubCategory(QString name, int position,
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142 const QModelIndex &parent)
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144 if (!this->insertRow(position, parent))
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147 for(int column = 0; column < this->columnCount(parent); ++column)
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149 QModelIndex child = this->index(parent.row()+1, column, parent);
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150 ShoppingTreeItem* item = this->getItem(child);
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151 item->setItemType(ShoppingTreeItem::Category);
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152 this->setData(child, QVariant(name), Qt::EditRole);
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157 /*******************************************************************/
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158 bool ShoppingTreeModel::addItem(QString name, int position,
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159 const QModelIndex &parent)
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161 if (!this->insertRow(position, parent))
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165 QModelIndex child = this->index(parent.row()+1, column, parent);
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166 ShoppingTreeItem* item = this->getItem(child);
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167 item->setItemType(ShoppingTreeItem::Item);
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168 this->setData(child, QVariant(name), Qt::EditRole);
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173 /*******************************************************************/
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174 bool ShoppingTreeModel::removeCategoryOrItem(const QModelIndex &index)
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176 return this->removeRow(index.row(), index.parent());
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179 /*******************************************************************/
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180 QVariant ShoppingTreeModel::data(const QModelIndex &index, int role) const
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182 if(!index.isValid())
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185 if(role != Qt::DisplayRole && role != Qt::EditRole)
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188 ShoppingTreeItem *item = getItem(index);
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189 return item->data(index.column());
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192 /*******************************************************************/
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193 Qt::ItemFlags ShoppingTreeModel::flags(const QModelIndex &index) const
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195 if(!index.isValid())
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198 return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
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201 /*******************************************************************/
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202 ShoppingTreeItem *ShoppingTreeModel::getItem(const QModelIndex &index) const
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204 if(index.isValid()){
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205 ShoppingTreeItem *item =
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206 static_cast<ShoppingTreeItem*>(index.internalPointer());
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207 if(item) return item;
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213 /*******************************************************************/
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214 QVariant ShoppingTreeModel::headerData(int section,
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215 Qt::Orientation orientation,
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218 if(orientation == Qt::Horizontal && role == Qt::DisplayRole)
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219 return rootItem->data(section);
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224 /*******************************************************************/
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225 QModelIndex ShoppingTreeModel::index(int row, int column,
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226 const QModelIndex &parent) const
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228 if(parent.isValid() && parent.column() != 0)
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229 return QModelIndex();
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231 ShoppingTreeItem *parentItem = getItem(parent);
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233 ShoppingTreeItem *childItem = parentItem->child(row);
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235 return createIndex(row, column, childItem);
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237 return QModelIndex();
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240 /*******************************************************************/
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241 bool ShoppingTreeModel::insertColumns(int position, int columns,
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242 const QModelIndex &parent)
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246 beginInsertColumns(parent, position, position + columns - 1);
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247 success = rootItem->insertColumns(position, columns);
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248 endInsertColumns();
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253 /*******************************************************************/
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254 bool ShoppingTreeModel::insertRows(int position, int rows,
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255 const QModelIndex &parent)
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257 ShoppingTreeItem *parentItem = getItem(parent);
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260 beginInsertRows(parent, position, position + rows - 1);
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261 success = parentItem->insertChildren(position, rows,
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262 rootItem->columnCount(), this);
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268 /*******************************************************************/
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269 QModelIndex ShoppingTreeModel::parent(const QModelIndex &index) const
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271 if(!index.isValid())
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272 return QModelIndex();
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274 ShoppingTreeItem *childItem = getItem(index);
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275 ShoppingTreeItem *parentItem = childItem->parent();
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277 if(parentItem == rootItem)
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278 return QModelIndex();
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280 return createIndex(parentItem->childNumber(), 0, parentItem);
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283 /*******************************************************************/
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284 bool ShoppingTreeModel::removeColumns(int position, int columns, const QModelIndex &parent)
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288 beginRemoveColumns(parent, position, position + columns - 1);
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289 success = rootItem->removeColumns(position, columns);
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290 endRemoveColumns();
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292 if (rootItem->columnCount() == 0)
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293 removeRows(0, rowCount());
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298 /*******************************************************************/
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299 bool ShoppingTreeModel::removeRows(int position, int rows, const QModelIndex &parent)
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301 ShoppingTreeItem *parentItem = getItem(parent);
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304 beginRemoveRows(parent, position, position + rows - 1);
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305 success = parentItem->removeChildren(position, rows);
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311 /*******************************************************************/
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312 int ShoppingTreeModel::rowCount(const QModelIndex &parent) const
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314 ShoppingTreeItem *parentItem = getItem(parent);
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316 return parentItem->childCount();
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319 /*******************************************************************/
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320 int ShoppingTreeModel::columnCount(const QModelIndex &parent) const
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322 if(parent.isValid())
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323 return getItem(parent)->columnCount();
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325 return rootItem->columnCount();
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328 /*******************************************************************/
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329 bool ShoppingTreeModel::setData(const QModelIndex &index, const QVariant &value, int role)
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331 if(role != Qt::EditRole)
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334 ShoppingTreeItem *item = getItem(index);
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336 // only "items" have more than one editable column
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337 if(index.column() != 0 && m_domElementForItem.value(item).tagName() != "item")
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341 bool result = (item->setData(index.column(),value) &&
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342 updateDomElement(item, index.column()));
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345 emit dataChanged(index, index);
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350 /*******************************************************************/
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351 bool ShoppingTreeModel::setHeaderData(int section, Qt::Orientation orientation,
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352 const QVariant &value, int role)
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354 if(role != Qt::EditRole || orientation != Qt::Horizontal)
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357 bool result = rootItem->setData(section, value);
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360 emit headerDataChanged(orientation, section, section);
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365 /*******************************************************************/
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366 void ShoppingTreeModel::registerInsertedChild(ShoppingTreeItem *item)
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368 QDomElement parentElement = m_domElementForItem.value(item->parent());
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369 QDomElement element;
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370 if(item->getItemType() == ShoppingTreeItem::Category)
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371 element = m_document.createElement("category");
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372 else if(item->getItemType() == ShoppingTreeItem::Item)
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373 element = m_document.createElement("item");
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377 parentElement.appendChild(element);
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379 m_domElementForItem.insert(item, element);
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382 /*******************************************************************/
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383 void ShoppingTreeModel::deleteRemovedChild(ShoppingTreeItem *item)
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385 QDomElement element = m_domElementForItem.value(item);
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386 QDomNode parentNode = element.parentNode();
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387 parentNode.removeChild(element);
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389 m_domElementForItem.remove(item);
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392 /*******************************************************************/
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393 void ShoppingTreeModel::parseCategoryElement(const QDomElement &element,
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394 ShoppingTreeItem *parentItem)
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396 // if parent is null then add category to root
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398 parentItem = rootItem;
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400 ShoppingTreeItem *item;
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401 QDomElement child = element.firstChildElement("title");
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402 QString title = child.text();
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403 if(!title.isEmpty())
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405 parentItem->insertChildren(parentItem->childCount(), 1,
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406 rootItem->columnCount());
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408 parentItem->child(parentItem->childCount() - 1)->
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409 setItemType(ShoppingTreeItem::Category);
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410 parentItem->child(parentItem->childCount() - 1)->setData(0, title);
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411 m_domElementForItem.insert(parentItem->child(parentItem->childCount() - 1),
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413 item = parentItem->child(parentItem->childCount() - 1);
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417 emit invalidDocument();
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421 // add each sub category and item to the tree
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422 child = child.nextSiblingElement();
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423 while(!child.isNull())
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425 if(child.tagName() == "category")
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427 parseCategoryElement(child, parentItem);
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429 else if(child.tagName() == "item")
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431 item->insertChildren(
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432 item->childCount(), 1,
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433 rootItem->columnCount());
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434 QVector<QVariant> columnData =
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435 getColumnsFromItemElement(child);
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436 item->child(item->childCount() - 1)->setItemType(ShoppingTreeItem::Item);
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437 for(int column = 0; column < columnData.size(); column++)
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439 item->child(item->childCount() - 1)->setData(column, columnData[column]);
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441 m_domElementForItem.insert(item->child(item->childCount() - 1),
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446 emit invalidDocument();
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450 child = child.nextSiblingElement();
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454 /*******************************************************************/
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455 QVector<QVariant> ShoppingTreeModel::getColumnsFromItemElement(const QDomElement &element)
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457 QVector<QVariant> data;
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458 QString title = element.firstChildElement("title").text();
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459 int quantity = element.firstChildElement("quantity").text().toInt();
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460 QString store = element.firstChildElement("store").text();
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461 if(title.isEmpty() || quantity < 0)
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463 emit invalidDocument();
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467 data << title << quantity << store;
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471 /*******************************************************************/
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472 bool ShoppingTreeModel::updateDomElement(ShoppingTreeItem *item, int column)
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474 QDomElement element = m_domElementForItem.value(item);
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476 if(element.isNull())
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479 bool success = false;
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484 QDomElement oldTitleElement = element.firstChildElement("title");
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485 QDomElement newTitleElement = m_document.createElement("title");
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487 QDomText newTitleText = m_document.createTextNode(item->data(0).toString());
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488 newTitleElement.appendChild(newTitleText);
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490 element.replaceChild(newTitleElement, oldTitleElement);
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496 QDomElement oldQuantityElement = element.firstChildElement("quantity");
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497 QDomElement newQuantityElement = m_document.createElement("quantity");
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499 QDomText newQuantityText = m_document.createTextNode(item->data(1).toString());
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500 newQuantityElement.appendChild(newQuantityText);
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502 element.replaceChild(newQuantityElement, oldQuantityElement);
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508 QDomElement oldStoreElement = element.firstChildElement("store");
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509 QDomElement newStoreElement = m_document.createElement("store");
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511 QDomText newStoreText = m_document.createTextNode(item->data(0).toString());
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512 newStoreElement.appendChild(newStoreText);
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514 element.replaceChild(newStoreElement, oldStoreElement);
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522 QDomElement oldDateElement = element.firstChildElement("lastModified");
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523 if(!oldDateElement.isNull())
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525 QDomElement newDateElement = m_document.createElement("lastModified");
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527 QDomText newDateText = m_document.createTextNode(
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528 QDateTime::currentDateTime().toString("dd/MM/yyyy-hh:mm:ss"));
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529 newDateElement.appendChild(newDateText);
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531 element.replaceChild(newDateElement, oldDateElement);
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539 /*******************************************************************/
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540 void ShoppingTreeModel::updateXmlFile() const
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542 QFile xmlFile(m_xmlFileName);
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544 xmlFile.open(QIODevice::WriteOnly);
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545 xmlFile.write(m_document.toByteArray(4));
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