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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//! [0]
class ZipEngineHandler : public QAbstractFileEngineHandler
{
public:
QAbstractFileEngine *create(const QString &fileName) const;
};
QAbstractFileEngine *ZipEngineHandler::create(const QString &fileName) const
{
// ZipEngineHandler returns a ZipEngine for all .zip files
return fileName.toLower().endsWith(".zip") ? new ZipEngine(fileName) : 0;
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
ZipEngineHandler engine;
MainWindow window;
window.show();
return app.exec();
}
//! [0]
//! [1]
QAbstractSocketEngine *ZipEngineHandler::create(const QString &fileName) const
{
// ZipEngineHandler returns a ZipEngine for all .zip files
return fileName.toLower().endsWith(".zip") ? new ZipEngine(fileName) : 0;
}
//! [1]
//! [2]
QAbstractFileEngineIterator *
CustomFileEngine::beginEntryList(QDir::Filters filters, const QStringList &filterNames)
{
return new CustomFileEngineIterator(filters, filterNames);
}
//! [2]
//! [3]
class CustomIterator : public QAbstractFileEngineIterator
{
public:
CustomIterator(const QStringList &nameFilters, QDir::Filters filters)
: QAbstractFileEngineIterator(nameFilters, filters), index(0)
{
// In a real iterator, these entries are fetched from the
// file system based on the value of path().
entries << "entry1" << "entry2" << "entry3";
}
bool hasNext() const
{
return index < entries.size() - 1;
}
QString next()
{
if (!hasNext())
return QString();
++index;
return currentFilePath();
}
QString currentFileName()
{
return entries.at(index);
}
private:
QStringList entries;
int index;
};
//! [3]
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