<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Qt 4.6: dommodel.cpp Example File (itemviews/simpledommodel/dommodel.cpp)</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://qt.nokia.com/"><img src="images/qt-logo.png" align="left" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">dommodel.cpp Example File<br /><span class="small-subtitle">itemviews/simpledommodel/dommodel.cpp</span> </h1> <pre><span class="comment"> /**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Nokia. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/</span> #include <QtGui> #include <QtXml> #include "domitem.h" #include "dommodel.h" DomModel::DomModel(QDomDocument document, QObject *parent) : QAbstractItemModel(parent), domDocument(document) { rootItem = new DomItem(domDocument, 0); } DomModel::~DomModel() { delete rootItem; } int DomModel::columnCount(const QModelIndex &<span class="comment">/*parent*/</span>) 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 Qt::ItemIsEnabled | Qt::ItemIsSelectable; } 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(); }</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="40%" align="left">Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies)</td> <td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="40%" align="right"><div align="right">Qt 4.6.3</div></td> </tr></table></div></address></body> </html>