defuze.me
Client
|
00001 /**************************************************************************** 00002 ** 00003 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). 00004 ** All rights reserved. 00005 ** Contact: Nokia Corporation (qt-info@nokia.com) 00006 ** 00007 ** This file is part of the examples of the Qt Toolkit. 00008 ** 00009 ** $QT_BEGIN_LICENSE:BSD$ 00010 ** You may use this file under the terms of the BSD license as follows: 00011 ** 00012 ** "Redistribution and use in source and binary forms, with or without 00013 ** modification, are permitted provided that the following conditions are 00014 ** met: 00015 ** * Redistributions of source code must retain the above copyright 00016 ** notice, this list of conditions and the following disclaimer. 00017 ** * Redistributions in binary form must reproduce the above copyright 00018 ** notice, this list of conditions and the following disclaimer in 00019 ** the documentation and/or other materials provided with the 00020 ** distribution. 00021 ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor 00022 ** the names of its contributors may be used to endorse or promote 00023 ** products derived from this software without specific prior written 00024 ** permission. 00025 ** 00026 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00027 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00028 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00029 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00030 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00031 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00032 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00033 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00034 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00035 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00036 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 00037 ** $QT_END_LICENSE$ 00038 ** 00039 ****************************************************************************/ 00040 00041 #include <QtGui> 00042 #include "treeitem.hpp" 00043 #include "treemodel.hpp" 00044 00045 TreeModel::TreeModel(QObject *parent) : QAbstractItemModel(parent) 00046 { 00047 QList<QVariant> rootData; 00048 rootData << "1"; 00049 rootItem = new TreeItem(rootData); 00050 } 00051 00052 TreeModel::~TreeModel() 00053 { 00054 delete rootItem; 00055 } 00056 00057 int TreeModel::columnCount(const QModelIndex &parent) const 00058 { 00059 if (parent.isValid()) 00060 return static_cast<TreeItem*>(parent.internalPointer())->columnCount(); 00061 else 00062 return rootItem->columnCount(); 00063 } 00064 00065 QVariant TreeModel::data(const QModelIndex &index, int role) const 00066 { 00067 if (!index.isValid()) 00068 return QVariant(); 00069 00070 if (role != Qt::DisplayRole) 00071 return QVariant(); 00072 00073 TreeItem *item = static_cast<TreeItem*>(index.internalPointer()); 00074 00075 return item->data(index.column()); 00076 } 00077 00078 Qt::ItemFlags TreeModel::flags(const QModelIndex &index) const 00079 { 00080 if (!index.isValid()) 00081 return 0; 00082 00083 return Qt::ItemIsEnabled | Qt::ItemIsSelectable; 00084 } 00085 00086 QVariant TreeModel::headerData(int section, Qt::Orientation orientation, 00087 int role) const 00088 { 00089 if (orientation == Qt::Horizontal && role == Qt::DisplayRole) 00090 return rootItem->data(section); 00091 00092 return QVariant(); 00093 } 00094 00095 QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent) 00096 const 00097 { 00098 if (!hasIndex(row, column, parent)) 00099 return QModelIndex(); 00100 00101 TreeItem *parentItem; 00102 00103 if (!parent.isValid()) 00104 parentItem = rootItem; 00105 else 00106 parentItem = static_cast<TreeItem*>(parent.internalPointer()); 00107 00108 TreeItem *childItem = parentItem->child(row); 00109 if (childItem) 00110 return createIndex(row, column, childItem); 00111 else 00112 return QModelIndex(); 00113 } 00114 00115 QModelIndex TreeModel::parent(const QModelIndex &index) const 00116 { 00117 if (!index.isValid()) 00118 return QModelIndex(); 00119 00120 TreeItem *childItem = static_cast<TreeItem*>(index.internalPointer()); 00121 TreeItem *parentItem = childItem->parent(); 00122 00123 if (parentItem == rootItem) 00124 return QModelIndex(); 00125 00126 return createIndex(parentItem->row(), 0, parentItem); 00127 } 00128 00129 int TreeModel::rowCount(const QModelIndex &parent) const 00130 { 00131 TreeItem *parentItem; 00132 if (parent.column() > 0) 00133 return 0; 00134 00135 if (!parent.isValid()) 00136 parentItem = rootItem; 00137 else 00138 parentItem = static_cast<TreeItem*>(parent.internalPointer()); 00139 00140 return parentItem->childCount(); 00141 }