kicad/common/commit.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright 2016-2017 CERN
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* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
* @author Maciej Suminski <maciej.suminski@cern.ch>
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*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <algorithm>
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#include <commit.h>
#include <base_struct.h>
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COMMIT::COMMIT()
{
}
COMMIT::~COMMIT()
{
for( COMMIT_LINE& ent : m_changes )
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{
if( ent.m_copy )
delete ent.m_copy;
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}
}
COMMIT& COMMIT::Stage( EDA_ITEM* aItem, CHANGE_TYPE aChangeType )
{
// CHT_MODIFY and CHT_DONE are not compatible
assert( ( aChangeType & ( CHT_MODIFY | CHT_DONE ) ) != ( CHT_MODIFY | CHT_DONE ) );
int flag = aChangeType & CHT_FLAGS;
switch( aChangeType & CHT_TYPE )
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{
case CHT_ADD:
assert( m_changedItems.find( aItem ) == m_changedItems.end() );
makeEntry( aItem, CHT_ADD | flag );
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return *this;
case CHT_REMOVE:
makeEntry( aItem, CHT_REMOVE | flag );
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return *this;
case CHT_MODIFY:
{
EDA_ITEM* parent = parentObject( aItem );
EDA_ITEM* clone = nullptr;
assert( parent );
if( parent )
clone = parent->Clone();
assert( clone );
if( clone )
return createModified( parent, clone, flag );
break;
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}
default:
assert( false );
}
return *this;
}
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COMMIT& COMMIT::Stage( std::vector<EDA_ITEM*>& container, CHANGE_TYPE aChangeType )
{
for( EDA_ITEM* item : container )
{
Stage( item, aChangeType );
}
return *this;
}
COMMIT& COMMIT::Stage( const PICKED_ITEMS_LIST& aItems, UNDO_REDO_T aModFlag )
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{
for( unsigned int i = 0; i < aItems.GetCount(); i++ )
{
UNDO_REDO_T change_type = aItems.GetPickedItemStatus( i );
EDA_ITEM* item = aItems.GetPickedItem( i );
EDA_ITEM* copy = NULL;
if( change_type == UR_UNSPECIFIED )
change_type = aItems.m_Status;
if( change_type == UR_UNSPECIFIED )
change_type = aModFlag;
if( ( copy = aItems.GetPickedItemLink( i ) ) )
{
assert( change_type == UR_CHANGED );
// There was already a copy created, so use it
Modified( item, copy );
}
else
{
Stage( item, convert( change_type ) );
}
}
return *this;
}
int COMMIT::GetStatus( EDA_ITEM* aItem )
{
COMMIT_LINE* entry = findEntry( parentObject( aItem ) );
return entry ? entry->m_type : 0;
}
template <class Container, class F>
void eraseIf( Container& c, F&& f )
{
c.erase( std::remove_if( c.begin(),
c.end(),
std::forward<F>( f ) ),
c.end() );
}
COMMIT& COMMIT::createModified( EDA_ITEM* aItem, EDA_ITEM* aCopy, int aExtraFlags )
{
EDA_ITEM* parent = parentObject( aItem );
auto entryIt = m_changedItems.find( parent );
if( entryIt != m_changedItems.end() )
{
delete aCopy;
return *this; // item has been already modified once
}
makeEntry( parent, CHT_MODIFY | aExtraFlags, aCopy );
return *this;
}
void COMMIT::makeEntry( EDA_ITEM* aItem, CHANGE_TYPE aType, EDA_ITEM* aCopy )
{
// Expect an item copy if it is going to be modified
assert( !!aCopy == ( ( aType & CHT_TYPE ) == CHT_MODIFY ) );
if( m_changedItems.find( aItem ) != m_changedItems.end() )
{
eraseIf( m_changes, [aItem] ( const COMMIT_LINE& aEnt ) {
return aEnt.m_item == aItem;
} );
}
COMMIT_LINE ent;
ent.m_item = aItem;
ent.m_type = aType;
ent.m_copy = aCopy;
m_changedItems.insert( aItem );
m_changes.push_back( ent );
}
COMMIT::COMMIT_LINE* COMMIT::findEntry( EDA_ITEM* aItem )
{
for( COMMIT_LINE& change : m_changes )
{
if( change.m_item == aItem )
return &change;
}
return nullptr;
}
CHANGE_TYPE COMMIT::convert( UNDO_REDO_T aType ) const
{
switch( aType )
{
case UR_NEW:
return CHT_ADD;
case UR_DELETED:
return CHT_REMOVE;
default:
assert( false );
// fall through
case UR_CHANGED:
case UR_MOVED:
case UR_MIRRORED_X:
case UR_MIRRORED_Y:
case UR_ROTATED:
case UR_ROTATED_CLOCKWISE:
case UR_FLIPPED:
return CHT_MODIFY;
}
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}