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https://github.com/LMMS/lmms.git
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30543d708c
Added itemByHash() method to ResourceDB class allowing safe access to an item identified with an according hash. If there's no item associated with the hash, NULL is being returned. Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
143 lines
3.3 KiB
C++
143 lines
3.3 KiB
C++
/*
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* ResourceDB.h - header file 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_DB_H
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#define _RESOURCE_DB_H
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#include <QtCore/QDateTime>
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#include <QtCore/QHash>
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#include <QtCore/QMap>
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#include <QtCore/QStringList>
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#include <QtXml/QDomDocument>
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#include "ResourceTreeItem.h"
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class ResourceDB : public QObject
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{
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Q_OBJECT
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public:
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typedef QHash<QString, ResourceItem *> ItemList;
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ResourceDB( ResourceProvider * _provider );
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~ResourceDB();
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void init( void );
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void load( const QString & _file );
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void save( const QString & _file );
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inline ResourceProvider * provider( void )
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{
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return m_provider;
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}
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inline const ItemList & items( void ) const
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{
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return m_items;
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}
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inline ItemList & items( void )
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{
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return m_items;
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}
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inline ResourceTreeItem * topLevelNode( void )
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{
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return &m_topLevelNode;
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}
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const ResourceItem * itemByHash( const QString & _hash ) const;
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const ResourceItem * nearestMatch( const ResourceItem & _item );
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void addItem( ResourceItem * newItem );
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void recursiveRemoveItems( ResourceTreeItem * parent,
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bool removeTopLevelParent = true );
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private:
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void saveTreeItem( const ResourceTreeItem * _i, QDomDocument & _doc,
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QDomElement & _de );
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void loadTreeItem( ResourceTreeItem * _i, QDomElement & _de );
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static inline QString typeName( ResourceItem::Type _t )
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{
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return s_typeNames[_t];
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}
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static inline QString baseDirName( ResourceItem::BaseDirectory _bd )
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{
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return s_baseDirNames[_bd];
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}
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static inline ResourceItem::Type typeFromName( const QString & _n )
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{
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for( TypeStringMap::ConstIterator it = s_typeNames.begin();
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it != s_typeNames.end(); ++it )
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{
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if( it.value() == _n )
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{
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return it.key();
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}
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}
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return ResourceItem::TypeUnknown;
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}
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static inline ResourceItem::BaseDirectory baseDirFromName(
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const QString & _n )
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{
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for( BaseDirStringMap::ConstIterator it =
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s_baseDirNames.begin();
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it != s_baseDirNames.end(); ++it )
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{
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if( it.value() == _n )
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{
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return it.key();
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}
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}
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return ResourceItem::BaseRoot;
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}
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typedef QMap<ResourceItem::Type, QString> TypeStringMap;
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typedef QMap<ResourceItem::BaseDirectory, QString> BaseDirStringMap;
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static TypeStringMap s_typeNames;
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static BaseDirStringMap s_baseDirNames;
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ResourceProvider * m_provider;
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ItemList m_items;
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ResourceTreeItem m_topLevelNode;
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signals:
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void itemsChanged( void );
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void directoryItemAdded( const QString & _path );
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void directoryItemRemoved( const QString & _path );
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} ;
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#endif
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