/usr/include/akonadi/entitytreeviewstatesaver.h is in kdepimlibs5-dev 4:4.14.10-1ubuntu7.
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Copyright (c) 2009 Volker Krause <vkrause@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 AKONADI_ENTITYTREEVIEWSTATESAVER_H
#define AKONADI_ENTITYTREEVIEWSTATESAVER_H
#include "akonadi_export.h"
#include <QtCore/QObject>
class QTreeView;
class KConfigGroup;
namespace Akonadi {
class EntityTreeViewStateSaverPrivate;
/**
* @short A helper class that saves and restores state of an EntityTreeView
*
* This class saves and restores the state of a QTreeView showing an EntityTreeModel,
* or whatever proxies are stacked on top of one. State so far means the current selection
* and expansion of the items and collections.
*
* The EntityTreeViewStateSaver is needed because populating the EntityTreeModel
* is asynchronous and finding the right point in time to restore the state is a
* difficult task that is hidden inside this class.
*
* Example:
*
* @code
*
* class MyWidget : public QWidget
* {
* public:
* MyWidget( QWidget* parent );
* ~MyWidget();
*
* ...
*
* private:
* KConfig *mGlobalConfig;
* QTreeView *mTreeView;
* Akonadi::EntityTreeViewStateSaver *mStateSaver;
* };
*
* MyWidget::MyWidget( QWidget *parent )
* : QWidget( parent )
* {
* mGlobalConfig = ...
* mTreeView = new QTreeView( this );
* ...
*
* mStateSaver = new Akonadi::EntityTreeViewStateSaver( mTreeView );
*
* KConfigGroup group( mGlobalConfig, "treeViewState" );
* mStateSaver->restoreState( group );
* }
*
* MyWidget::~MyWidget()
* {
* KConfigGroup group( mGlobalConfig, "treeViewState" );
* mStateSaver->saveState( group );
* }
*
* @endcode
*
* @author Volker Krause <vkrause@kde.org>
* @since 4.4
*
* @deprecated This class is deprecated. Use ETMViewStateSaver instead.
*/
class AKONADI_DEPRECATED_EXPORT EntityTreeViewStateSaver : public QObject
{
Q_OBJECT
public:
/**
* Creates a new state saver, for saving or restoring.
*
* @param view The QTreeView which state should be saved/restored.
*/
explicit EntityTreeViewStateSaver(QTreeView *view);
/**
* Destroys this state saver.
*/
~EntityTreeViewStateSaver();
/**
* Stores the current state in the given config group.
*
* @param configGroup Config file group into which the state is supposed to be stored.
*/
void saveState(KConfigGroup &configGroup) const;
/**
* Restore the state stored in @p configGroup as soon as the corresponding entities
* become available in the model (the model is populated asynchronously, which is the
* main reason why you want to use this class).
*
* @param configGroup Config file group containing a previously stored EntityTreeView state.
*/
void restoreState(const KConfigGroup &configGroup) const;
private:
//@cond PRIVATE
EntityTreeViewStateSaverPrivate *const d;
Q_PRIVATE_SLOT(d, void rowsInserted(const QModelIndex &, int, int))
Q_PRIVATE_SLOT(d, void restoreScrollBarState())
//@endcond
};
}
#endif
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