Long live Qt 4.5!

1 files changed, 116 insertions, 0 deletions

diff --git a/examples/itemviews/fetchmore/filelistmodel.cpp b/examples/itemviews/fetchmore/filelistmodel.cpp
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+++ b/examples/itemviews/fetchmore/filelistmodel.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 examples 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "filelistmodel.h"
+#include <QApplication>
+#include <QPalette>
+#include <QBrush>
+#include <QDir>
+
+FileListModel::FileListModel(QObject *parent)
+    : QAbstractListModel(parent)
+{
+}
+
+//![4]
+int FileListModel::rowCount(const QModelIndex & /* parent */) const
+{
+    return fileCount;
+}
+
+QVariant FileListModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid())
+        return QVariant();
+    
+    if (index.row() >= fileList.size() || index.row() < 0)
+        return QVariant();
+    
+    if (role == Qt::DisplayRole)
+        return fileList.at(index.row());
+    else if (role == Qt::BackgroundRole) {
+        int batch = (index.row() / 100) % 2;
+        if (batch == 0)
+            return qApp->palette().base();
+        else
+            return qApp->palette().alternateBase();
+    }
+    return QVariant();
+}
+//![4]
+
+//![1]
+bool FileListModel::canFetchMore(const QModelIndex & /* index */) const
+{
+    if (fileCount < fileList.size())
+        return true;
+    else
+        return false;
+}
+//![1]
+
+//![2]
+void FileListModel::fetchMore(const QModelIndex & /* index */)
+{
+    int remainder = fileList.size() - fileCount;
+    int itemsToFetch = qMin(100, remainder);
+
+    beginInsertRows(QModelIndex(), fileCount, fileCount+itemsToFetch);
+    
+    fileCount += itemsToFetch;
+
+    endInsertRows();
+
+    emit numberPopulated(itemsToFetch);
+}
+//![2]
+
+//![0]
+void FileListModel::setDirPath(const QString &path)
+{
+    QDir dir(path);
+
+    fileList = dir.entryList();
+    fileCount = 0;
+    reset();
+}
+//![0]
+