|  | Home · All Namespaces · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# dommodel.cpp Example File
itemviews/simpledommodel/dommodel.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License versions 2.0 or 3.0 as published by the Free Software
     ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
     ** included in the packaging of this file.  Alternatively you may (at
     ** your option) use any later version of the GNU General Public
     ** License if such license has been publicly approved by Trolltech ASA
     ** (or its successors, if any) and the KDE Free Qt Foundation.
     **
     ** Please review the following information to ensure GNU General
     ** Public Licensing requirements will be met:
     ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
     ** you are unsure which license is appropriate for your use, please
     ** review the following information:
     ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
     ** or contact the sales department at sales@trolltech.com.
     **
     ** In addition, as a special exception, Trolltech, as the sole
     ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
     ** Integration plug-in the right for the Qt/Eclipse Integration to
     ** link to functionality provided by Qt Designer and its related
     ** libraries.
     **
     ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
     ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
     ** granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #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();
     }