property_mgr.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2020 CERN
 * @author Tomasz Wlostowski <[email protected]>
 * @author Maciej Suminski <[email protected]>
 *
 * 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 3
 * 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, see <http://www.gnu.org/licenses/>.
 */
 
#include <inspectable.h>
#include <properties/property_mgr.h>
#include <properties/property.h>
 
#include <algorithm>
#include <utility>
#include <wx/wx.h>
 
static wxString EMPTY_STRING( wxEmptyString );
 
 
void PROPERTY_MANAGER::RegisterType( TYPE_ID aType, const wxString& aName )
{
 wxASSERT( m_classNames.count( aType ) == 0 );
 m_classNames.emplace( aType, aName );
}
 
 
const wxString& PROPERTY_MANAGER::ResolveType( TYPE_ID aType ) const
{
 auto it = m_classNames.find( aType );
 return it != m_classNames.end() ? it->second : EMPTY_STRING;
}
 
 
PROPERTY_BASE* PROPERTY_MANAGER::GetProperty( TYPE_ID aType, const wxString& aProperty ) const
{
 if( m_dirty )
 const_cast<PROPERTY_MANAGER*>( this )->Rebuild();
 
 auto it = m_classes.find( aType );
 
 if( it == m_classes.end() )
 return nullptr;
 
 const CLASS_DESC& classDesc = it->second;
 
 for( PROPERTY_BASE* property : classDesc.m_allProperties )
 {
 if( !aProperty.CmpNoCase( property->Name() ) )
 return property;
 }
 
 return nullptr;
}
 
 
const PROPERTY_LIST& PROPERTY_MANAGER::GetProperties( TYPE_ID aType ) const
{
 if( m_dirty )
 const_cast<PROPERTY_MANAGER*>( this )->Rebuild();
 
 static const PROPERTY_LIST empty;
 auto it = m_classes.find( aType );
 
 if( it == m_classes.end() )
 return empty;
 
 return it->second.m_allProperties;
}
 
 
const PROPERTY_DISPLAY_ORDER& PROPERTY_MANAGER::GetDisplayOrder( TYPE_ID aType ) const
{
 if( m_dirty )
 const_cast<PROPERTY_MANAGER*>( this )->Rebuild();
 
 static const PROPERTY_DISPLAY_ORDER empty;
 auto it = m_classes.find( aType );
 
 if( it == m_classes.end() )
 return empty;
 
 return it->second.m_displayOrder;
}
 
 
const std::vector<wxString>& PROPERTY_MANAGER::GetGroupDisplayOrder( TYPE_ID aType ) const
{
 if( m_dirty )
 const_cast<PROPERTY_MANAGER*>( this )->Rebuild();
 
 static const std::vector<wxString> empty;
 auto it = m_classes.find( aType );
 
 if( it == m_classes.end() )
 return empty;
 
 return it->second.m_groupDisplayOrder;
}
 
 
const void* PROPERTY_MANAGER::TypeCast( const void* aSource, TYPE_ID aBase, TYPE_ID aTarget ) const
{
 if( aBase == aTarget )
 return aSource;
 
 auto classDesc = m_classes.find( aBase );
 
 if( classDesc == m_classes.end() )
 return aSource;
 
 auto& converters = classDesc->second.m_typeCasts;
 auto converter = converters.find( aTarget );
 
 if( converter == converters.end() ) // explicit type cast not found
 return IsOfType( aBase, aTarget ) ? aSource : nullptr;
 
 return (*converter->second)( aSource );
}
 
 
PROPERTY_BASE& PROPERTY_MANAGER::AddProperty( PROPERTY_BASE* aProperty, const wxString& aGroup )
{
 const wxString& name = aProperty->Name();
 TYPE_ID hash = aProperty->OwnerHash();
 CLASS_DESC& classDesc = getClass( hash );
 classDesc.m_ownProperties.emplace( name, aProperty );
 classDesc.m_ownDisplayOrder.emplace_back( aProperty );
 
 aProperty->SetGroup( aGroup );
 
 if( !classDesc.m_groups.count( aGroup ) )
 {
 classDesc.m_groupDisplayOrder.emplace_back( aGroup );
 classDesc.m_groups.insert( aGroup );
 }
 
 m_dirty = true;
 return *aProperty;
}
 
 
PROPERTY_BASE& PROPERTY_MANAGER::ReplaceProperty( size_t aBase, const wxString& aName,
 PROPERTY_BASE* aNew, const wxString& aGroup )
{
 CLASS_DESC& classDesc = getClass( aNew->OwnerHash() );
 classDesc.m_replaced.insert( std::make_pair( aBase, aName ) );
 return AddProperty( aNew, aGroup );
}
 
 
void PROPERTY_MANAGER::AddTypeCast( TYPE_CAST_BASE* aCast )
{
 TYPE_ID derivedHash = aCast->DerivedHash();
 CLASS_DESC& classDesc = getClass( aCast->BaseHash() );
 auto& typeCasts = classDesc.m_typeCasts;
 wxASSERT_MSG( typeCasts.count( derivedHash ) == 0, "Such converter already exists" );
 typeCasts.emplace( derivedHash, aCast );
}
 
 
void PROPERTY_MANAGER::InheritsAfter( TYPE_ID aDerived, TYPE_ID aBase )
{
 wxASSERT_MSG( aDerived != aBase, "Class cannot inherit from itself" );
 
 CLASS_DESC& derived = getClass( aDerived );
 CLASS_DESC& base = getClass( aBase );
 derived.m_bases.push_back( base );
 m_dirty = true;
 
 wxASSERT_MSG( derived.m_bases.size() == 1 || derived.m_typeCasts.count( aBase ) == 1,
 "You need to add a TYPE_CAST for classes inheriting from multiple bases" );
}
 
 
void PROPERTY_MANAGER::Mask( TYPE_ID aDerived, TYPE_ID aBase, const wxString& aName )
{
 wxASSERT_MSG( aDerived != aBase, "Class cannot mask from itself" );
 
 CLASS_DESC& derived = getClass( aDerived );
 derived.m_maskedBaseProperties.insert( std::make_pair( aBase, aName ) );
 m_dirty = true;
}
 
 
void PROPERTY_MANAGER::OverrideAvailability( TYPE_ID aDerived, TYPE_ID aBase,
 const wxString& aName,
 std::function<bool( INSPECTABLE* )> aFunc )
{
 wxASSERT_MSG( aDerived != aBase, "Class cannot override from itself" );
 
 CLASS_DESC& derived = getClass( aDerived );
 derived.m_availabilityOverrides[std::make_pair( aBase, aName )] = std::move( aFunc );
 m_dirty = true;
}
 
 
void PROPERTY_MANAGER::OverrideWriteability( TYPE_ID aDerived, TYPE_ID aBase,
 const wxString& aName,
 std::function<bool( INSPECTABLE* )> aFunc )
{
 wxASSERT_MSG( aDerived != aBase, "Class cannot override from itself" );
 
 CLASS_DESC& derived = getClass( aDerived );
 derived.m_writeabilityOverrides[std::make_pair( aBase, aName )] = std::move( aFunc );
 m_dirty = true;
}
 
 
bool PROPERTY_MANAGER::IsAvailableFor( TYPE_ID aItemClass, PROPERTY_BASE* aProp,
 INSPECTABLE* aItem )
{
 if( !aProp->Available( aItem ) )
 return false;
 
 CLASS_DESC& derived = getClass( aItemClass );
 
 auto it = derived.m_availabilityOverrides.find( std::make_pair( aProp->BaseHash(),
 aProp->Name() ) );
 
 if( it != derived.m_availabilityOverrides.end() )
 return it->second( aItem );
 
 return true;
}
 
 
bool PROPERTY_MANAGER::IsWriteableFor( TYPE_ID aItemClass, PROPERTY_BASE* aProp,
 INSPECTABLE* aItem )
{
 if( !aProp->Writeable( aItem ) )
 return false;
 
 CLASS_DESC& derived = getClass( aItemClass );
 
 auto it = derived.m_writeabilityOverrides.find( std::make_pair( aProp->BaseHash(),
 aProp->Name() ) );
 
 if( it != derived.m_writeabilityOverrides.end() )
 return it->second( aItem );
 
 return true;
}
 
 
bool PROPERTY_MANAGER::IsOfType( TYPE_ID aDerived, TYPE_ID aBase ) const
{
 if( aDerived == aBase )
 return true;
 
 auto derived = m_classes.find( aDerived );
 wxCHECK( derived != m_classes.end(), false ); // missing class description
 
 // traverse the hierarchy seeking for the base class
 for( auto& base : derived->second.m_bases )
 {
 if( IsOfType( base.get().m_id, aBase ) )
 return true;
 }
 
 return false;
}
 
 
void PROPERTY_MANAGER::Rebuild()
{
 for( std::pair<const TYPE_ID, CLASS_DESC>& classEntry : m_classes )
 classEntry.second.rebuild();
 
 m_dirty = false;
}
 
 
PROPERTY_MANAGER::CLASS_DESC& PROPERTY_MANAGER::getClass( TYPE_ID aTypeId )
{
 auto it = m_classes.find( aTypeId );
 
 if( it == m_classes.end() )
 tie( it, std::ignore ) = m_classes.emplace( aTypeId, CLASS_DESC( aTypeId ) );
 
 return it->second;
}
 
 
void PROPERTY_MANAGER::CLASS_DESC::rebuild()
{
 PROPERTY_SET replaced;
 PROPERTY_SET masked;
 m_allProperties.clear();
 collectPropsRecur( m_allProperties, replaced, m_displayOrder, masked );
 // We need to keep properties sorted to be able to use std::set_* functions
 sort( m_allProperties.begin(), m_allProperties.end() );
 
 std::vector<wxString> displayOrder;
 std::set<wxString> groups;
 
 auto collectGroups =
 [&]( std::set<wxString>& aSet, std::vector<wxString>& aResult )
 {
 auto collectGroupsRecursive =
 []( auto& aSelf, std::set<wxString>& aSetR, std::vector<wxString>& aResultR,
 const CLASS_DESC& aClassR ) -> void
 {
 for( const wxString& group : aClassR.m_groupDisplayOrder )
 {
 if( !aSetR.count( group ) )
 {
 aSetR.insert( group );
 aResultR.emplace_back( group );
 }
 }
 
 for( const CLASS_DESC& base : aClassR.m_bases )
 aSelf( aSelf, aSetR, aResultR, base );
 };
 
 collectGroupsRecursive( collectGroupsRecursive, aSet, aResult, *this );
 };
 
 // TODO(JE): This currently relies on rebuild() happening after all properties are added
 // separate out own groups vs. all groups to fix
 collectGroups( groups, displayOrder );
 m_groupDisplayOrder = displayOrder;
}
 
 
void PROPERTY_MANAGER::CLASS_DESC::collectPropsRecur( PROPERTY_LIST& aResult,
 PROPERTY_SET& aReplaced,
 PROPERTY_DISPLAY_ORDER& aDisplayOrder,
 PROPERTY_SET& aMasked ) const
{
 for( const std::pair<size_t, wxString>& replacedEntry : m_replaced )
 aReplaced.emplace( replacedEntry );
 
 for( const std::pair<size_t, wxString>& maskedEntry : m_maskedBaseProperties )
 aMasked.emplace( maskedEntry );
 
 /*
 * We want to insert our own properties in forward order, but earlier than anything already in
 * the list (which will have been added by a subclass of us)
 */
 int displayOrderStart = 0;
 
 if( !aDisplayOrder.empty() )
 {
 int firstSoFar = std::min_element( aDisplayOrder.begin(), aDisplayOrder.end(),
 []( const std::pair<PROPERTY_BASE*, int>& aFirst,
 const std::pair<PROPERTY_BASE*, int>& aSecond )
 {
 return aFirst.second < aSecond.second;
 } )->second;
 
 displayOrderStart = firstSoFar - m_ownProperties.size();
 }
 
 int idx = 0;
 
 for( PROPERTY_BASE* property : m_ownDisplayOrder )
 {
 PROPERTY_SET::key_type propertyKey = std::make_pair( property->OwnerHash(),
 property->Name() );
 // Do not store replaced properties
 if( aReplaced.count( propertyKey ) )
 continue;
 
 // Do not store masked properties
 if( aMasked.count( propertyKey ) )
 continue;
 
 aDisplayOrder[property] = displayOrderStart + idx++;
 aResult.push_back( property );
 }
 
 // Iterate backwards so that replaced properties appear before base properties
 for( auto it = m_bases.rbegin(); it != m_bases.rend(); ++it )
 it->get().collectPropsRecur( aResult, aReplaced, aDisplayOrder, aMasked );
}
 
 
std::vector<TYPE_ID> PROPERTY_MANAGER::GetMatchingClasses( PROPERTY_BASE* aProperty )
{
 std::vector<TYPE_ID> ids;
 
/*
 for( auto& cls : m_classes )
 {
 CLASS_INFO info;
 
 for( auto prop : cls.second.m_allProperties )
 info.properties.push_back(prop);
 
 
 }
 */
 
 return ids;
}
 
 
PROPERTY_MANAGER::CLASSES_INFO PROPERTY_MANAGER::GetAllClasses()
{
 CLASSES_INFO rv;
 
 for( std::pair<const TYPE_ID, CLASS_DESC>& classEntry : m_classes )
 {
 CLASS_INFO info;
 
 info.type = classEntry.first;
 info.name = m_classNames[classEntry.first];
 
 for( PROPERTY_BASE* prop : classEntry.second.m_allProperties )
 info.properties.push_back( prop );
 
 rv.push_back( info );
 }
 
 return rv;
}
 
 
void PROPERTY_MANAGER::PropertyChanged( INSPECTABLE* aObject, PROPERTY_BASE* aProperty )
{
 auto callListeners =
 [&]( TYPE_ID typeId )
 {
 auto listeners = m_listeners.find( typeId );
 
 if( listeners != m_listeners.end() )
 {
 for( const PROPERTY_LISTENER& listener : listeners->second )
 listener( aObject, aProperty, m_managedCommit );
 }
 };
 
 CLASS_DESC& objectClass = getClass( TYPE_HASH( *aObject ) );
 
 callListeners( objectClass.m_id );
 
 for( CLASS_DESC& superClass : objectClass.m_bases )
 callListeners( superClass.m_id );
}
 
 
PROPERTY_COMMIT_HANDLER::PROPERTY_COMMIT_HANDLER( COMMIT* aCommit )
{
 wxCHECK2_MSG( PROPERTY_MANAGER::Instance().m_managedCommit == nullptr,
 return, "Can't have more than one managed commit at a time!" );
 
 PROPERTY_MANAGER::Instance().m_managedCommit = aCommit;
}
 
 
PROPERTY_COMMIT_HANDLER::~PROPERTY_COMMIT_HANDLER()
{
 wxASSERT_MSG( PROPERTY_MANAGER::Instance().m_managedCommit != nullptr,
 "Something went wrong: m_managedCommit already null!" );
 
 PROPERTY_MANAGER::Instance().m_managedCommit = nullptr;
}