plasma-framework/plasma/private/actionwidgetinterface_p.h

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/******************************************************************************
* Copyright 2009 by Aaron Seigo <aseigo@kde.org> *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 *
* Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public License *
* along with this library; see the file COPYING.LIB. If not, write to *
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, *
* Boston, MA 02110-1301, USA. *
*******************************************************************************/
#ifndef ACTIONWIDGETINTERFACE_P_H
#define ACTIONWIDGETINTERFACE_P_H
#include <QAction>
#include "private/themedwidgetinterface_p.h"
namespace Plasma
{
template <class T>
class ActionWidgetInterface : public ThemedWidgetInterface<T>
{
public:
ActionWidgetInterface(T *parent)
: ThemedWidgetInterface<T>(parent),
action(0)
{
}
virtual ~ActionWidgetInterface()
{
setAction(0);
}
virtual void changed()
{
}
void clearAction()
{
action = 0;
syncToAction();
changed();
}
void syncToAction()
{
if (!action) {
this->q->setIcon(QIcon());
this->q->setText(QString());
this->q->setEnabled(false);
return;
}
//we don't get told *what* changed, just that something changed
//so we update everything we care about
this->q->setIcon(action->icon());
this->q->setText(action->iconText());
this->q->setEnabled(action->isEnabled());
this->q->setVisible(action->isVisible());
if (!this->q->toolTip().isEmpty()) {
this->q->setToolTip(action->text());
}
changed();
}
void setAction(QAction *a)
{
if (action) {
QObject::disconnect(action, 0, this->q, 0);
QObject::disconnect(this->q, 0, action, 0);
}
action = a;
if (action) {
QObject::connect(action, SIGNAL(changed()), this->q, SLOT(syncToAction()));
QObject::connect(action, SIGNAL(destroyed(QObject*)), this->q, SLOT(clearAction()));
QObject::connect(this->q, SIGNAL(clicked()), action, SLOT(trigger()));
syncToAction();
}
}
QAction *action;
};
} // namespace Plasma
#endif