dommodel.cpp Example File

itemviews/simpledommodel/dommodel.cpp
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#include "domitem.h" #include "dommodel.h" #include <QtXml> DomModel::DomModel(QDomDocument document, QObject *parent) : QAbstractItemModel(parent), domDocument(document) { rootItem = new DomItem(domDocument, 0); } DomModel::~DomModel() { delete rootItem; } int DomModel::columnCount(const QModelIndex &/*parent*/) const { return 3; } QVariant DomModel::data(const QModelIndex &index, int role) const { if (!index.isValid()) return QVariant(); if (role != Qt::DisplayRole) return QVariant(); DomItem *item = static_cast<DomItem*>(index.internalPointer()); QDomNode node = item->node(); QStringList attributes; QDomNamedNodeMap attributeMap = node.attributes(); switch (index.column()) { case 0: return node.nodeName(); case 1: for (int i = 0; i < attributeMap.count(); ++i) { QDomNode attribute = attributeMap.item(i); attributes << attribute.nodeName() + "=\"" +attribute.nodeValue() + '"'; } return attributes.join(' '); case 2: return node.nodeValue().split("\n").join(' '); default: return QVariant(); } } Qt::ItemFlags DomModel::flags(const QModelIndex &index) const { if (!index.isValid()) return 0; return QAbstractItemModel::flags(index); } QVariant DomModel::headerData(int section, Qt::Orientation orientation, int role) const { if (orientation == Qt::Horizontal && role == Qt::DisplayRole) { switch (section) { case 0: return tr("Name"); case 1: return tr("Attributes"); case 2: return tr("Value"); default: return QVariant(); } } return QVariant(); } QModelIndex DomModel::index(int row, int column, const QModelIndex &parent) const { if (!hasIndex(row, column, parent)) return QModelIndex(); DomItem *parentItem; if (!parent.isValid()) parentItem = rootItem; else parentItem = static_cast<DomItem*>(parent.internalPointer()); DomItem *childItem = parentItem->child(row); if (childItem) return createIndex(row, column, childItem); else return QModelIndex(); } QModelIndex DomModel::parent(const QModelIndex &child) const { if (!child.isValid()) return QModelIndex(); DomItem *childItem = static_cast<DomItem*>(child.internalPointer()); DomItem *parentItem = childItem->parent(); if (!parentItem || parentItem == rootItem) return QModelIndex(); return createIndex(parentItem->row(), 0, parentItem); } int DomModel::rowCount(const QModelIndex &parent) const { if (parent.column() > 0) return 0; DomItem *parentItem; if (!parent.isValid()) parentItem = rootItem; else parentItem = static_cast<DomItem*>(parent.internalPointer()); return parentItem->node().childNodes().count(); }