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/*
* This file is part of the KFTPGrabber project
*
* Copyright (C) 2003-2006 by the KFTPGrabber developers
* Copyright (C) 2003-2006 Jernej Kos <kostko@jweb-network.net>
*
* 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
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. 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 Steet, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
*
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
#ifndef KFTPWIDGETSWIDGETLISTER_H
#define KFTPWIDGETSWIDGETLISTER_H
#include <ntqwidget.h>
#include <ntqptrlist.h>
class TQPushButton;
class TQVBoxLayout;
class TQHBox;
namespace KFTPWidgets {
/**
* This class has been adopted from TDEPIM with slight functional and style
* changes.
*
* @author Jernej Kos
* @author Marc Mutz <marc@mutz.com>
*/
class WidgetLister : public TQWidget
{
Q_OBJECT
public:
/**
* Class constructor.
*
* @param parent Parent widget
* @param minWidgets Minimum number of widgets in the list
* @param maxWidgets Maximum number of widgets in the list
*/
WidgetLister(TQWidget* parent, int minWidgets, int maxWidgets);
/**
* Class destructor.
*/
virtual ~WidgetLister();
/**
* Clears all widgets.
*/
void clear();
/**
* Sets the number of currently shown widgets on screen.
*
* @param number The number of widgets that should be visible
*/
virtual void setNumberShown(int number);
protected slots:
/**
* Called whenever the user clicks on the 'more' button. Reimplementations
* should call this method, because this implementation does all the dirty
* work with adding the widgets to the layout (through @ref addWidget)
* and enabling/disabling the control buttons.
*/
virtual void slotMore();
/**
* Called whenever the user clicks on the 'fewer' button. Reimplementations
* should call this method, because this implementation does all the dirty
* work with removing the widgets from the layout (through @ref removeWidget)
* and enabling/disabling the control buttons.
*/
virtual void slotFewer();
/**
* Called whenever the user clicks on the 'clear' button. Reimplementations
* should call this method, because this implementation does all the dirty
* work with removing all but @ref m_minWidgets widgets from the layout and
* enabling/disabling the control buttons.
*/
virtual void slotClear();
protected:
/**
* Adds a single widget. Doesn't care if there are already @ref m_maxWidgets
* on screen and whether it should enable/disable any controls. It simply does
* what it is asked to do. You want to reimplement this method if you want to
* initialize the the widget when showing it on screen. Make sure you call this
* implementaion, though, since you cannot put the widget on screen from derived
* classes (@p m_layout is private). Make sure the parent of the TQWidget to add is
* this WidgetLister.
*
* @param widget The widget that should be added
*/
virtual void addWidget(TQWidget *widget = 0);
/**
* Removes a single (always the last) widget. Doesn't care if there are still only
* @ref m_minWidgets left on screen and whether it should enable/disable any controls.
* It simply does what it is asked to do. You want to reimplement this method if you
* want to save the the widget's state before removing it from screen. Make sure you
* call this implementaion, though, since you should not remove the widget from
* screen from derived classes.
*/
virtual void removeWidget();
/**
* Called to clear a given widget. The default implementation does nothing.
*
* @param widget The widget that should be cleared
*/
virtual void clearWidget(TQWidget *widget);
/**
* This method should return a new widget to add to the widget list.
*
* @param parent The parent widget
* @return A valid TQWidget
*/
virtual TQWidget *createWidget(TQWidget *parent);
protected:
TQPtrList<TQWidget> m_widgetList;
int m_minWidgets;
int m_maxWidgets;
signals:
/**
* This signal is emitted whenever a widget gets added.
*/
void widgetAdded(TQWidget *widget);
/**
* This signal is emitted whenever a widget gets removed.
*/
void widgetRemoved();
/**
* This signal is emitted whenever the clear button is clicked.
*/
void clearWidgets();
private:
void enableControls();
TQPushButton *m_buttonMore;
TQPushButton *m_buttonFewer;
TQPushButton *m_buttonClear;
TQVBoxLayout *m_layout;
TQHBox *m_buttonBox;
};
}
#endif
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