1 files changed, 162 insertions, 0 deletions
diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/model.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/model.cpp
new file mode 100644
index 000000000..50ba15020
--- /dev/null
+++ b/sources/pyside2/doc/codesnippets/doc/src/snippets/modelview-subclasses/model.cpp
@@ -0,0 +1,162 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of PySide2.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+  model.cpp
+
+  A simple model that uses a QVector as its data source.
+*/
+
+#include "model.h"
+
+/*!
+    Returns the number of items in the string list as the number of rows
+    in the model.
+*/
+
+int LinearModel::rowCount(const QModelIndex &parent) const
+{
+    Q_USING(parent);
+
+    return values.count();
+}
+
+/*
+    Returns an appropriate value for the requested data.
+    If the view requests an invalid index, an invalid variant is returned.
+    If a header is requested then we just return the column or row number,
+    depending on the orientation of the header.
+    Any valid index that corresponds to a string in the list causes that
+    string to be returned.
+*/
+
+/*!
+    Returns a model index for other component to use when referencing the
+    item specified by the given row, column, and type. The parent index
+    is ignored.
+*/
+
+QModelIndex LinearModel::index(int row, int column, const QModelIndex &parent) const
+{
+    if (parent == QModelIndex() && row >= 0 && row < rowCount()
+        && column == 0)
+        return createIndex(row, column, 0);
+    else
+        return QModelIndex();
+}
+
+QVariant LinearModel::data(const QModelIndex &index, int role) const
+{
+    Q_UNUSED(role);
+
+    if (!index.isValid())
+        return QVariant();
+
+    return values.at(index.row());
+}
+
+/*!
+    Returns Qt::ItemIsEditable so that all items in the vector can be edited.
+*/
+
+Qt::ItemFlags LinearModel::flags(const QModelIndex &index) const
+{
+    // all items in the model are editable
+    return QAbstractListModel::flags(index) | Qt::ItemIsEditable;
+}
+
+/*!
+    Changes an item in the string list, but only if the following conditions
+    are met:
+
+    * The index supplied is valid.
+    * The index corresponds to an item to be shown in a view.
+    * The role associated with editing text is specified.
+
+    The dataChanged() signal is emitted if the item is changed.
+*/
+
+bool LinearModel::setData(const QModelIndex &index,
+                          const QVariant &value, int role)
+{
+    if (!index.isValid() || role != Qt::EditRole)
+        return false;
+    values.replace(index.row(), value.toInt());
+    emit dataChanged(index, index);
+    return true;
+}
+
+/*!
+    Inserts a number of rows into the model at the specified position.
+*/
+
+bool LinearModel::insertRows(int position, int rows, const QModelIndex &parent)
+{
+    beginInsertRows(parent, position, position + rows - 1);
+
+    values.insert(position, rows, 0);
+
+    endInsertRows();
+    return true;
+}
+
+/*!
+    Removes a number of rows from the model at the specified position.
+*/
+
+bool LinearModel::removeRows(int position, int rows, const QModelIndex &parent)
+{
+    beginRemoveRows(QModelIndex(), position, position+rows-1);
+
+    values.remove(position, rows);
+
+    endRemoveRows();
+    return true;
+}