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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the examples of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 #include <QtXml>

    44 

    45 #include "domitem.h"

    46 #include "dommodel.h"

    47 

    48 //! [0]

    49 DomModel::DomModel(QDomDocument document, QObject *parent)

    50     : QAbstractItemModel(parent), domDocument(document)

    51 {

    52     rootItem = new DomItem(domDocument, 0);

    53 }

    54 //! [0]

    55 

    56 //! [1]

    57 DomModel::~DomModel()

    58 {

    59     delete rootItem;

    60 }

    61 //! [1]

    62 

    63 //! [2]

    64 int DomModel::columnCount(const QModelIndex &/*parent*/) const

    65 {

    66     return 3;

    67 }

    68 //! [2]

    69 

    70 //! [3]

    71 QVariant DomModel::data(const QModelIndex &index, int role) const

    72 {

    73     if (!index.isValid())

    74         return QVariant();

    75 

    76     if (role != Qt::DisplayRole)

    77         return QVariant();

    78 

    79     DomItem *item = static_cast<DomItem*>(index.internalPointer());

    80 

    81     QDomNode node = item->node();

    82 //! [3] //! [4]

    83     QStringList attributes;

    84     QDomNamedNodeMap attributeMap = node.attributes();

    85 

    86     switch (index.column()) {

    87         case 0:

    88             return node.nodeName();

    89         case 1:

    90             for (int i = 0; i < attributeMap.count(); ++i) {

    91                 QDomNode attribute = attributeMap.item(i);

    92                 attributes << attribute.nodeName() + "=\""

    93                               +attribute.nodeValue() + "\"";

    94             }

    95             return attributes.join(" ");

    96         case 2:

    97             return node.nodeValue().split("\n").join(" ");

    98         default:

    99             return QVariant();

   100     }

   101 }

   102 //! [4]

   103 

   104 //! [5]

   105 Qt::ItemFlags DomModel::flags(const QModelIndex &index) const

   106 {

   107     if (!index.isValid())

   108         return 0;

   109 

   110     return Qt::ItemIsEnabled | Qt::ItemIsSelectable;

   111 }

   112 //! [5]

   113 

   114 //! [6]

   115 QVariant DomModel::headerData(int section, Qt::Orientation orientation,

   116                               int role) const

   117 {

   118     if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {

   119         switch (section) {

   120             case 0:

   121                 return tr("Name");

   122             case 1:

   123                 return tr("Attributes");

   124             case 2:

   125                 return tr("Value");

   126             default:

   127                 return QVariant();

   128         }

   129     }

   130 

   131     return QVariant();

   132 }

   133 //! [6]

   134 

   135 //! [7]

   136 QModelIndex DomModel::index(int row, int column, const QModelIndex &parent)

   137             const

   138 {

   139     if (!hasIndex(row, column, parent))

   140         return QModelIndex();

   141 

   142     DomItem *parentItem;

   143 

   144     if (!parent.isValid())

   145         parentItem = rootItem;

   146     else

   147         parentItem = static_cast<DomItem*>(parent.internalPointer());

   148 //! [7]

   149 

   150 //! [8]

   151     DomItem *childItem = parentItem->child(row);

   152     if (childItem)

   153         return createIndex(row, column, childItem);

   154     else

   155         return QModelIndex();

   156 }

   157 //! [8]

   158 

   159 //! [9]

   160 QModelIndex DomModel::parent(const QModelIndex &child) const

   161 {

   162     if (!child.isValid())

   163         return QModelIndex();

   164 

   165     DomItem *childItem = static_cast<DomItem*>(child.internalPointer());

   166     DomItem *parentItem = childItem->parent();

   167 

   168     if (!parentItem || parentItem == rootItem)

   169         return QModelIndex();

   170 

   171     return createIndex(parentItem->row(), 0, parentItem);

   172 }

   173 //! [9]

   174 

   175 //! [10]

   176 int DomModel::rowCount(const QModelIndex &parent) const

   177 {

   178     if (parent.column() > 0)

   179         return 0;

   180 

   181     DomItem *parentItem;

   182 

   183     if (!parent.isValid())

   184         parentItem = rootItem;

   185     else

   186         parentItem = static_cast<DomItem*>(parent.internalPointer());

   187 

   188     return parentItem->node().childNodes().count();

   189 }

   190 //! [10]