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/***************************************************************************
* Copyright (C) 2006 by Peter Penz *
* peter.penz@gmx.at *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef PROGRESSINDICATOR_H
#define PROGRESSINDICATOR_H
#include <qdatetime.h>
/**
* Allows to show a progress of synchronous operations. Sample code:
* \code
* const int operationsCount = 100;
* ProgressIndicator progressIndicator(i18n("Loading..."),
* i18n("Loading finished."),
* operationsCount);
* for (int i = 0; i < operationsCount; ++i) {
* progressIndicator.execOperation();
* // do synchronous operation...
* }
* \endcode
* The progress indicator takes care to show the progress bar only after
* a delay of around 500 milliseconds. This means if all operations are
* executing within 500 milliseconds, no progress bar is shown at all.
* As soon as the progress bar is shown, the application still may process
* events, but the the Dolphin main widget is disabled.
*
* @author Peter Penz <peter.penz@gmx.at>
*/
class ProgressIndicator
{
public:
/**
* @param progressText Text for the progress bar (e. g. "Loading...").
* @param finishedText Text which is displayed after the operations have been finished
* (e. g. "Loading finished.").
* @param operationsCount Number of operations.
*/
ProgressIndicator(const QString& progressText,
const QString& finishedText,
int operationsCount);
/**
* Sets the progress to 100 % and displays the 'finishedText' property
* in the status bar.
*/
~ProgressIndicator();
/**
* Increases the progress and should be invoked
* before each operation.
*/
void execOperation();
private:
bool m_showProgress;
int m_operationsCount;
int m_operationsIndex;
QTime m_startTime;
QString m_finishedText;
};
#endif
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