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**
** This file is part of the LibreCAD project, a 2D CAD program
**
** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file gpl-2.0.txt included in the
** packaging of this file.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
**
** This copyright notice MUST APPEAR in all copies of the script!
**
**********************************************************************/
#ifndef RS_BLOCKLIST_H
#define RS_BLOCKLIST_H
#include <QList>
class QString;
class RS_Block;
class RS_BlockListListener;
/**
* List of blocks.
*
* @see RS_Block
*
* @author Andrew Mustun
*/
class RS_BlockList {
public:
RS_BlockList(bool owner=false);
virtual ~RS_BlockList() = default;
void clear();
/**
* @return Number of blocks available.
*/
int count() const;
/**
* @return Block at given position or NULL if i is out of range.
*/
RS_Block* at(int i);
RS_Block* at(int i) const;
//! \{ \brief range based loop
QList<RS_Block*>::iterator begin();
QList<RS_Block*>::iterator end();
QList<RS_Block*>::const_iterator begin()const;
QList<RS_Block*>::const_iterator end()const;
//! \}
void activate(const QString& name);
void activate(RS_Block* block);
//! @return The active block of NULL if no block is activated.
RS_Block* getActive() const;
bool add(RS_Block* block, bool notify=true);
void addNotification();
void remove(RS_Block* block);
bool rename(RS_Block* block, const QString& name);
//virtual void editBlock(RS_Block* block, const RS_Block& source);
RS_Block* find(const QString& name);
RS_Block* findCaseInsensitive(const QString& name) const;
QString newName(const QString& suggestion = "");
void toggle(const QString& name);
void toggle(RS_Block* block);
void freezeAll(bool freeze);
void addListener(RS_BlockListListener* listener);
void removeListener(RS_BlockListListener* listener);
bool isOwner() const {return m_owner;}
void setOwner(bool ow) {m_owner = ow;}
/**
* Sets the block list modified status to 'm'.
*/
void setModified(bool m);
/**
* @retval true The block list has been modified.
* @retval false The block list has not been modified.
*/
bool isModified() const;
friend std::ostream& operator << (std::ostream& os, RS_BlockList& b);
private:
//! Is the list owning the blocks?
bool m_owner = false;
//! Blocks in the graphic
QList<RS_Block*> m_blocks;
//! List of registered BlockListListeners
QList<RS_BlockListListener*> m_blockListListeners;
//! Currently active block
RS_Block* m_activeBlock = nullptr;
/** Flag set if the block list was modified and not yet saved. */
bool m_modified = false;
};
#endif
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