Qt Reference Documentation

dommodel.cpp Example File

itemviews/simpledommodel/dommodel.cpp
 /****************************************************************************
 **
 ** 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.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
 **     the names of its contributors may be used to endorse or promote
 **     products derived from this software without specific prior written
 **     permission.
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #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 &/*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 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();
 }
X

Thank you for giving your feedback.

Make sure it is related to this specific page. For more general bugs and requests, please use the Qt Bug Tracker.

[0]; s.parentNode.insertBefore(ga, s); })();