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Diffstat (limited to 'examples/webenginewidgets/demobrowser/autosaver.h')
-rw-r--r-- | examples/webenginewidgets/demobrowser/autosaver.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/examples/webenginewidgets/demobrowser/autosaver.h b/examples/webenginewidgets/demobrowser/autosaver.h new file mode 100644 index 000000000..b0c73846f --- /dev/null +++ b/examples/webenginewidgets/demobrowser/autosaver.h @@ -0,0 +1,75 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the demonstration applications 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 The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/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. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef AUTOSAVER_H +#define AUTOSAVER_H + +#include <QtCore/QObject> +#include <QtCore/QBasicTimer> +#include <QtCore/QTime> + +/* + This class will call the save() slot on the parent object when the parent changes. + It will wait several seconds after changed() to combining multiple changes and + prevent continuous writing to disk. + */ +class AutoSaver : public QObject { + +Q_OBJECT + +public: + AutoSaver(QObject *parent); + ~AutoSaver(); + void saveIfNeccessary(); + +public slots: + void changeOccurred(); + +protected: + void timerEvent(QTimerEvent *event); + +private: + QBasicTimer m_timer; + QTime m_firstChange; + +}; + +#endif // AUTOSAVER_H |