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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "dommodel.h"
#include "domitem.h"
#include <QtXml>
//! [0]
DomModel::DomModel(const QDomDocument &document, QObject *parent)
: QAbstractItemModel(parent),
domDocument(document),
rootItem(new DomItem(domDocument, 0))
{
}
//! [0]
//! [1]
DomModel::~DomModel()
{
delete rootItem;
}
//! [1]
//! [2]
int DomModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return 3;
}
//! [2]
//! [3]
QVariant DomModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if (role != Qt::DisplayRole)
return QVariant();
const DomItem *item = static_cast<DomItem*>(index.internalPointer());
const QDomNode node = item->node();
//! [3] //! [4]
switch (index.column()) {
case 0:
return node.nodeName();
case 1:
{
const QDomNamedNodeMap attributeMap = node.attributes();
QStringList attributes;
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:
break;
}
return QVariant();
}
//! [4]
//! [5]
Qt::ItemFlags DomModel::flags(const QModelIndex &index) const
{
if (!index.isValid())
return Qt::NoItemFlags;
return QAbstractItemModel::flags(index);
}
//! [5]
//! [6]
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:
break;
}
}
return QVariant();
}
//! [6]
//! [7]
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());
//! [7]
//! [8]
DomItem *childItem = parentItem->child(row);
if (childItem)
return createIndex(row, column, childItem);
return QModelIndex();
}
//! [8]
//! [9]
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);
}
//! [9]
//! [10]
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();
}
//! [10]
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