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Revised journalling (undo/redo) to record full states instead of changes

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Recording single changes of objects or their specific properties is
completely superfluous as we have full implemented state tracking in all
objects already. Therefore use SerializingObject::saveState() and
SerializingObject::restoreState() in order to implement the undo/redo
functionality.

This is just an initial commit and needs some further work (especially
regarding stability). However even things like undo/redo of
addition/removal of Tracks and TrackContentObjects do work already.
This commit is contained in:
Tobias Doerffel
2014-01-07 23:42:17 +01:00
parent ddad2da162
commit a5c3cf6a99
15 changed files with 134 additions and 488 deletions
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8
src/core/ProjectJournal.cpp
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@@ -1,7 +1,7 @@
/*
* ProjectJournal.cpp - implementation of ProjectJournal
*
* Copyright (c) 2006-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
* Copyright (c) 2006-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
*
@@ -60,7 +60,10 @@ void ProjectJournal::undo()
if( m_currentJournalEntry - 1 >= m_journalEntries.begin() &&
( jo = m_joIDs[*--m_currentJournalEntry] ) != NULL )
{
bool prev = isJournalling();
setJournalling( false );
jo->undo();
setJournalling( prev );
engine::getSong()->setModified();
}
}
@@ -81,7 +84,10 @@ void ProjectJournal::redo()
if( m_currentJournalEntry < m_journalEntries.end() &&
( jo = m_joIDs[*m_currentJournalEntry++] ) != NULL )
{
bool prev = isJournalling();
setJournalling( false );
jo->redo();
setJournalling( prev );
engine::getSong()->setModified();
}
}