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https://bitbucket.org/smil3y/kdelibs.git
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107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
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/*
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Copyright (C) 2010 Klarälvdalens Datakonsult AB,
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a KDAB Group company, info@kdab.net,
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author Stephen Kelly <stephen@kdab.com>
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA.
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*/
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#ifndef KVIEWSTATEMAINTAINER_H
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#define KVIEWSTATEMAINTAINER_H
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#include "kdeui_export.h"
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#include <QtGui/QItemSelectionModel>
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#include <QtGui/QAbstractItemView>
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#include "kconfiggroup.h"
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#include "ksharedconfig.h"
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class KViewStateMaintainerBasePrivate;
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class KDEUI_EXPORT KViewStateMaintainerBase : public QObject
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{
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Q_OBJECT
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public:
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KViewStateMaintainerBase(KConfigGroup configGroup, QObject* parent = 0);
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~KViewStateMaintainerBase();
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void setSelectionModel(QItemSelectionModel *selectionModel);
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QItemSelectionModel *selectionModel() const;
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void setView(QAbstractItemView *view);
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QAbstractItemView *view() const;
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virtual void saveState() = 0;
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virtual void restoreState() = 0;
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protected:
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KConfigGroup configGroup() const;
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private:
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Q_DECLARE_PRIVATE(KViewStateMaintainerBase)
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KViewStateMaintainerBasePrivate * const d_ptr;
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Q_PRIVATE_SLOT( d_func(), void _k_modelAboutToBeReset() )
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Q_PRIVATE_SLOT( d_func(), void _k_modelReset() )
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};
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/**
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* @brief Encapsulates the maintenance of state between resets of QAbstractItemModel
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*
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* @code
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* m_collectionViewStateMaintainer = new KViewStateMaintainer<Akonadi::ETMViewStateSaver>(KGlobal::config()->group("collectionView"));
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* m_collectionViewStateMaintainer->setView(m_collectionView);
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*
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* m_collectionCheckStateMaintainer = new KViewStateMaintainer<Akonadi::ETMViewStateSaver>(KGlobal::config()->group("collectionCheckState"));
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* m_collectionCheckStateMaintainer->setSelectionModel(m_checkableProxy->selectionModel());
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* @endcode
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*
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* @see KViewStateSaver
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*/
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template<typename StateSaver>
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class KViewStateMaintainer : public KViewStateMaintainerBase
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{
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typedef StateSaver StateRestorer;
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public:
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KViewStateMaintainer(KConfigGroup configGroup, QObject* parent = 0)
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: KViewStateMaintainerBase(configGroup, parent)
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{
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}
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/* reimp */ void saveState()
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{
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StateSaver saver;
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saver.setView(view());
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saver.setSelectionModel(selectionModel());
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KConfigGroup cfg = configGroup();
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saver.saveState(cfg);
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cfg.sync();
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}
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/* reimp */ void restoreState()
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{
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StateRestorer *restorer = new StateRestorer;
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restorer->setView(view());
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restorer->setSelectionModel(selectionModel());
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restorer->restoreState(configGroup());
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}
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};
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#endif
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