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dc90c899aa
Added initial support for dragging ResourceItems. This is achieved by using drag'n'drop support offered by Qt's model/view technology. Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
/*
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* ResourceTreeModel.h - tree-model for ResourceDB
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*
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* Copyright (c) 2008-2009 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_TREE_MODEL_H
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#define _RESOURCE_TREE_MODEL_H
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#include <QtCore/QAbstractItemModel>
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#include "ResourceDB.h"
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class ResourceTreeModel : public QAbstractItemModel
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{
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Q_OBJECT
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public:
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ResourceTreeModel( ResourceDB * _db, QObject * _parent = NULL );
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virtual ~ResourceTreeModel()
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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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int rowCount( const QModelIndex & _parent = QModelIndex() ) const;
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virtual int columnCount( const QModelIndex & _parent =
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QModelIndex() ) const
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{
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return 1;
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}
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virtual QModelIndex index( int _row, int _col,
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const QModelIndex & _parent = QModelIndex() ) const;
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virtual QModelIndex parent( const QModelIndex & index ) const;
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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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void setFilter( const QString & _s );
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// return ResourceTreeItem belonging to a certain index
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static inline ResourceTreeItem * treeItem( const QModelIndex & _idx )
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{
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return static_cast<ResourceTreeItem *>(
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_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 treeItem( _idx )->item();
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}
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int totalItems() const;
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int shownItems() const;
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private:
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bool filterItems( ResourceTreeItem * _item,
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const QModelIndex & _parent,
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const QStringList & _keywords );
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void setHidden( ResourceTreeItem * _item,
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const QModelIndex & _parent,
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bool _hidden,
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bool _recursive = true );
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ResourceDB * m_db;
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signals:
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void itemsChanged( void );
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} ;
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#endif
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