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13e9876b38
Making setFilter(QString) a pure virtual public slot forces all derived models to implement this slot. Furthermore it allows external GUI code to connect e.g. QLineEdit::textChanged(QString) signal directly to the setFilter(...) method.
95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/*
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* ResourceModel.h - base class for all resource models
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*
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* Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _RESOURCE_MODEL_H
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#define _RESOURCE_MODEL_H
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#include <QtCore/QAbstractItemModel>
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#include "ResourceDB.h"
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class ResourceModel : public QAbstractItemModel
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{
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Q_OBJECT
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public:
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ResourceModel( ResourceDB * _db, QObject * _parent = NULL );
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virtual ~ResourceModel()
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{
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}
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virtual QVariant data( const QModelIndex & _idx,
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int _role = Qt::DisplayRole ) const;
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virtual Qt::ItemFlags flags( const QModelIndex & _index ) const;
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virtual int columnCount( const QModelIndex & _parent = QModelIndex() ) const
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{
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return 1;
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}
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// return list of possible MIME types for items in this model
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virtual QStringList mimeTypes() const;
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// used for drag'n'drop - return proper MIME data for indexes
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virtual QMimeData * mimeData( const QModelIndexList & _indexes ) const;
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// return ResourceTreeItem belonging to a certain index
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static inline ResourceItem::Relation * relation( const QModelIndex & _idx )
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{
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return static_cast<ResourceItem::Relation *>( _idx.internalPointer() );
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}
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// return ResourceItem belonging to a certain index
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static inline ResourceItem * item( const QModelIndex & _idx )
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{
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return relation( _idx )->item();
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}
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int totalItems() const;
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int shownItems() const;
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public slots:
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virtual void setFilter( const QString & _s ) = 0;
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protected:
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ResourceDB * db() const
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{
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return m_db;
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}
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private:
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ResourceDB * m_db;
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signals:
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void itemsChanged();
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} ;
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#endif
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