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/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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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 License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#include "SegmentEraseCommand.h"
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#include <tdelocale.h>
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#include "misc/Debug.h"
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#include "base/Composition.h"
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#include "base/Segment.h"
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#include "sound/AudioFile.h"
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#include "sound/AudioFileManager.h"
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namespace Rosegarden
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{
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SegmentEraseCommand::SegmentEraseCommand(Segment *segment) :
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KNamedCommand(i18n("Erase Segment")),
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m_composition(segment->getComposition()),
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m_segment(segment),
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m_mgr(0),
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m_audioFileName(""),
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m_detached(false)
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{
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// nothing else
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}
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SegmentEraseCommand::SegmentEraseCommand(Segment *segment,
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AudioFileManager *mgr) :
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KNamedCommand(i18n("Erase Segment")),
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m_composition(segment->getComposition()),
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m_segment(segment),
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m_mgr(mgr),
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m_detached(false)
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{
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// If this is an audio segment, we want to make a note of
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// its associated file name in case we need to undo and restore
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// the file.
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if (m_segment->getType() == Segment::Audio) {
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unsigned int id = m_segment->getAudioFileId();
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AudioFile *file = mgr->getAudioFile(id);
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if (file)
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m_audioFileName = file->getFilename();
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}
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}
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SegmentEraseCommand::~SegmentEraseCommand()
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{
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// This is the only place in this command that the Segment can
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// safely be deleted, and then only if it is not in the
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// Composition (i.e. if we executed more recently than we
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// unexecuted). Can't safely call through the m_segment pointer
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// here; someone else might have got to it first
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if (m_detached) {
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delete m_segment;
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}
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}
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void
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SegmentEraseCommand::execute()
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{
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m_composition->detachSegment(m_segment);
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m_detached = true;
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}
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void
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SegmentEraseCommand::unexecute()
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{
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m_composition->addSegment(m_segment);
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m_detached = false;
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if (m_segment->getType() == Segment::Audio &&
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m_audioFileName != "" &&
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m_mgr) {
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int id = m_mgr->fileExists(m_audioFileName);
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RG_DEBUG << "SegmentEraseCommand::unexecute: file is " << m_audioFileName << endl;
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if (id == -1)
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id = (int)m_mgr->addFile(m_audioFileName);
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m_segment->setAudioFileId(id);
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}
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}
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}
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