Long live Qt 4.5!

4 files changed, 352 insertions, 0 deletions

diff --git a/doc/src/snippets/stringlistmodel/main.cpp b/doc/src/snippets/stringlistmodel/main.cpp
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+++ b/doc/src/snippets/stringlistmodel/main.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    The main function for the string list model example. This creates and
+    populates a model with values from a string list then displays the
+    contents of the model using a QListView widget.
+*/
+
+#include <QAbstractItemModel>
+#include <QApplication>
+#include <QListView>
+
+#include "model.h"
+
+//! [0]
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+// Unindented for quoting purposes:
+//! [1]
+QStringList numbers;
+numbers << "One" << "Two" << "Three" << "Four" << "Five";
+
+QAbstractItemModel *model = new StringListModel(numbers);
+//! [0] //! [1] //! [2] //! [3]
+QListView *view = new QListView;
+//! [2]
+view->setWindowTitle("View onto a string list model");
+//! [4]
+view->setModel(model);
+//! [3] //! [4]
+
+    model->insertRows(5, 7, QModelIndex());
+
+    for (int row = 5; row < 12; ++row) {
+        QModelIndex index = model->index(row, 0, QModelIndex());
+        model->setData(index, QString::number(row+1));
+    }
+
+//! [5]
+    view->show();
+    return app.exec();
+}
+//! [5]
diff --git a/doc/src/snippets/stringlistmodel/model.cpp b/doc/src/snippets/stringlistmodel/model.cpp
new file mode 100644
index 0000000..8f681cc
--- /dev/null
+++ b/doc/src/snippets/stringlistmodel/model.cpp
@@ -0,0 +1,182 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+  model.cpp
+
+  A simple model that uses a QStringList as its data source.
+*/
+
+#include "model.h"
+
+/*!
+    Returns the number of items in the string list as the number of rows
+    in the model.
+*/
+
+//! [0]
+int StringListModel::rowCount(const QModelIndex &parent) const
+{
+    return stringList.count();
+}
+//! [0]
+
+/*!
+    Returns an appropriate value for the requested data.
+    If the view requests an invalid index, an invalid variant is returned.
+    Any valid index that corresponds to a string in the list causes that
+    string to be returned.
+*/
+
+//! [1]
+QVariant StringListModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid())
+        return QVariant();
+
+    if (index.row() >= stringList.size())
+        return QVariant();
+
+    if (role == Qt::DisplayRole)
+        return stringList.at(index.row());
+    else
+        return QVariant();
+}
+//! [1]
+
+/*!
+    Returns the appropriate header string depending on the orientation of
+    the header and the section. If anything other than the display role is
+    requested, we return an invalid variant.
+*/
+
+//! [2]
+QVariant StringListModel::headerData(int section, Qt::Orientation orientation,
+                                     int role) const
+{
+    if (role != Qt::DisplayRole)
+        return QVariant();
+
+    if (orientation == Qt::Horizontal)
+        return QString("Column %1").arg(section);
+    else
+        return QString("Row %1").arg(section);
+}
+//! [2]
+
+/*!
+    Returns an appropriate value for the item's flags. Valid items are
+    enabled, selectable, and editable.
+*/
+
+//! [3]
+Qt::ItemFlags StringListModel::flags(const QModelIndex &index) const
+{
+    if (!index.isValid())
+        return Qt::ItemIsEnabled;
+
+    return QAbstractItemModel::flags(index) | Qt::ItemIsEditable;
+}
+//! [3]
+
+/*!
+    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.
+*/
+
+//! [4]
+bool StringListModel::setData(const QModelIndex &index,
+                              const QVariant &value, int role)
+{
+    if (index.isValid() && role == Qt::EditRole) {
+
+        stringList.replace(index.row(), value.toString());
+        emit dataChanged(index, index);
+        return true;
+    }
+//! [4] //! [5]
+    return false;
+}
+//! [5]
+
+/*!
+    Inserts a number of rows into the model at the specified position.
+*/
+
+//! [6]
+bool StringListModel::insertRows(int position, int rows, const QModelIndex &parent)
+{
+    beginInsertRows(QModelIndex(), position, position+rows-1);
+
+    for (int row = 0; row < rows; ++row) {
+        stringList.insert(position, "");
+    }
+
+    endInsertRows();
+    return true;
+//! [6] //! [7]
+}
+//! [7]
+
+/*!
+    Removes a number of rows from the model at the specified position.
+*/
+
+//! [8]
+bool StringListModel::removeRows(int position, int rows, const QModelIndex &parent)
+{
+    beginRemoveRows(QModelIndex(), position, position+rows-1);
+
+    for (int row = 0; row < rows; ++row) {
+        stringList.removeAt(position);
+    }
+
+    endRemoveRows();
+    return true;
+//! [8] //! [9]
+}
+//! [9]
diff --git a/doc/src/snippets/stringlistmodel/model.h b/doc/src/snippets/stringlistmodel/model.h
new file mode 100644
index 0000000..8e8f9c6
--- /dev/null
+++ b/doc/src/snippets/stringlistmodel/model.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MODEL_H
+#define MODEL_H
+
+#include <QAbstractListModel>
+#include <QObject>
+#include <QStringList>
+
+//! [0]
+class StringListModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+public:
+    StringListModel(const QStringList &strings, QObject *parent = 0)
+        : QAbstractListModel(parent), stringList(strings) {}
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    QVariant data(const QModelIndex &index, int role) const;
+    QVariant headerData(int section, Qt::Orientation orientation,
+//! [0] //! [1]
+                        int role = Qt::DisplayRole) const;
+//! [1]
+
+//! [2]
+    Qt::ItemFlags flags(const QModelIndex &index) const;
+    bool setData(const QModelIndex &index, const QVariant &value,
+//! [2] //! [3]
+                 int role = Qt::EditRole);
+//! [3]
+
+//! [4]
+    bool insertRows(int position, int rows, const QModelIndex &index = QModelIndex());
+    bool removeRows(int position, int rows, const QModelIndex &index = QModelIndex());
+//! [4]
+
+//! [5]
+private:
+    QStringList stringList;
+};
+//! [5]
+
+#endif
diff --git a/doc/src/snippets/stringlistmodel/stringlistmodel.pro b/doc/src/snippets/stringlistmodel/stringlistmodel.pro
new file mode 100644
index 0000000..b1126bfe
--- /dev/null
+++ b/doc/src/snippets/stringlistmodel/stringlistmodel.pro
@@ -0,0 +1,3 @@
+HEADERS     = model.h
+SOURCES     = main.cpp \
+              model.cpp