sch_properties_panel.cpp

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/*
 * This program source code file is part of KICAD, a free EDA CAD application.
 *
 * Copyright (C) 2020 CERN
 * Copyright The KiCad Developers, see AUTHORS.txt for contributors.
 * @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 "sch_properties_panel.h"
 
#include <font/fontconfig.h>
#include <pgm_base.h>
#include <common.h>
#include <confirm.h>
#include <connection_graph.h>
#include <properties/pg_editors.h>
#include <properties/pg_properties.h>
#include <properties/property_mgr.h>
#include <properties/property.h>
#include <sch_commit.h>
#include <sch_edit_frame.h>
#include <sch_sheet.h>
#include <symbol_edit_frame.h>
#include <symbol_viewer_frame.h>
#include <schematic.h>
#include <sch_symbol.h>
#include <sch_field.h>
#include <template_fieldnames.h>
#include <settings/color_settings.h>
#include <string_utils.h>
#include <tool/tool_manager.h>
#include <tools/sch_selection_tool.h>
#include <wildcards_and_files_ext.h>
#include <wx_filename.h>
#include <set>
 
static const wxString MISSING_FIELD_SENTINEL = wxS( "\uE000" );
 
class SCH_SYMBOL_FIELD_PROPERTY : public PROPERTY_BASE
{
public:
    SCH_SYMBOL_FIELD_PROPERTY( const wxString& aName ) :
            PROPERTY_BASE( aName ),
            m_name( aName )
    { }
 
    size_t OwnerHash() const override { return TYPE_HASH( SCH_SYMBOL ); }
    size_t BaseHash() const override { return TYPE_HASH( SCH_SYMBOL ); }
    size_t TypeHash() const override { return TYPE_HASH( wxString ); }
 
    bool Writeable( INSPECTABLE* aObject ) const override
    {
        return PROPERTY_BASE::Writeable( aObject );
    }
 
    void setter( void* obj, wxAny& v ) override
    {
        wxString value;
 
        if( !v.GetAs( &value ) )
            return;
 
        SCH_SYMBOL* symbol = reinterpret_cast<SCH_SYMBOL*>( obj );
        SCH_FIELD*  field = symbol->GetField( m_name );
 
        wxString variantName;
        const SCH_SHEET_PATH* sheetPath = nullptr;
 
        if( symbol->Schematic() )
        {
            variantName = symbol->Schematic()->GetCurrentVariant();
            sheetPath = &symbol->Schematic()->CurrentSheet();
        }
 
        if( !field )
        {
            SCH_FIELD newField( symbol, FIELD_T::USER, m_name );
            newField.SetText( value, sheetPath, variantName );
            symbol->AddField( newField );
        }
        else
        {
            field->SetText( value, sheetPath, variantName );
        }
    }
 
    wxAny getter( const void* obj ) const override
    {
        const SCH_SYMBOL* symbol = reinterpret_cast<const SCH_SYMBOL*>( obj );
        const SCH_FIELD*  field = symbol->GetField( m_name );
 
        if( field )
        {
            wxString variantName;
            const SCH_SHEET_PATH* sheetPath = nullptr;
 
            if( symbol->Schematic() )
            {
                variantName = symbol->Schematic()->GetCurrentVariant();
                sheetPath = &symbol->Schematic()->CurrentSheet();
            }
 
            wxString text;
 
            if( !variantName.IsEmpty() && sheetPath )
                text = field->GetText( sheetPath, variantName );
            else
                text = field->GetText();
 
            return wxAny( text );
        }
        else
        {
            return wxAny( MISSING_FIELD_SENTINEL );
        }
    }
 
private:
    wxString m_name;
};
 
class SCH_SHEET_FIELD_PROPERTY : public PROPERTY_BASE
{
public:
    SCH_SHEET_FIELD_PROPERTY( const wxString& aName ) :
            PROPERTY_BASE( aName ),
            m_name( aName )
    {
    }
 
    size_t OwnerHash() const override { return TYPE_HASH( SCH_SHEET ); }
    size_t BaseHash() const override { return TYPE_HASH( SCH_SHEET ); }
    size_t TypeHash() const override { return TYPE_HASH( wxString ); }
 
    bool Writeable( INSPECTABLE* aObject ) const override { return PROPERTY_BASE::Writeable( aObject ); }
 
    void setter( void* obj, wxAny& v ) override
    {
        wxString value;
 
        if( !v.GetAs( &value ) )
            return;
 
        SCH_SHEET* sheet = reinterpret_cast<SCH_SHEET*>( obj );
        SCH_FIELD* field = sheet->GetField( m_name );
 
        wxString              variantName;
        const SCH_SHEET_PATH* sheetPath = nullptr;
 
        if( sheet->Schematic() )
        {
            variantName = sheet->Schematic()->GetCurrentVariant();
            sheetPath = &sheet->Schematic()->CurrentSheet();
        }
 
        if( !field )
        {
            SCH_FIELD newField( sheet, FIELD_T::USER, m_name );
            newField.SetText( value, sheetPath, variantName );
            sheet->AddField( newField );
        }
        else
        {
            field->SetText( value, sheetPath, variantName );
        }
    }
 
    wxAny getter( const void* obj ) const override
    {
        const SCH_SHEET* sheet = reinterpret_cast<const SCH_SHEET*>( obj );
        const SCH_FIELD* field = sheet->GetField( m_name );
 
        if( field )
        {
            wxString              variantName;
            const SCH_SHEET_PATH* sheetPath = nullptr;
 
            if( sheet->Schematic() )
            {
                variantName = sheet->Schematic()->GetCurrentVariant();
                sheetPath = &sheet->Schematic()->CurrentSheet();
            }
 
            wxString text;
 
            if( !variantName.IsEmpty() && sheetPath )
                text = field->GetText( sheetPath, variantName );
            else
                text = field->GetText();
 
            return wxAny( text );
        }
        else
        {
            return wxAny( MISSING_FIELD_SENTINEL );
        }
    }
 
private:
    wxString m_name;
};
 
std::set<wxString> SCH_PROPERTIES_PANEL::m_currentSymbolFieldNames;
std::set<wxString> SCH_PROPERTIES_PANEL::m_currentSheetFieldNames;
 
SCH_PROPERTIES_PANEL::SCH_PROPERTIES_PANEL( wxWindow* aParent, SCH_BASE_FRAME* aFrame ) :
        PROPERTIES_PANEL( aParent, aFrame ),
        m_frame( aFrame ),
        m_propMgr( PROPERTY_MANAGER::Instance() ),
        m_unitEditorInstance( nullptr ),
        m_checkboxEditorInstance( nullptr ),
        m_colorEditorInstance( nullptr ),
        m_fpEditorInstance( nullptr ),
        m_urlEditorInstance( nullptr )
{
    m_propMgr.Rebuild();
    bool found = false;
 
    wxASSERT( wxPGGlobalVars );
 
    wxString editorKey = PG_UNIT_EDITOR::BuildEditorName( m_frame );
 
    auto it = wxPGGlobalVars->m_mapEditorClasses.find( editorKey );
 
    if( it != wxPGGlobalVars->m_mapEditorClasses.end() )
    {
        m_unitEditorInstance = static_cast<PG_UNIT_EDITOR*>( it->second );
        m_unitEditorInstance->UpdateFrame( m_frame );
        found = true;
    }
 
    if( !found )
    {
        PG_UNIT_EDITOR* new_editor = new PG_UNIT_EDITOR( m_frame );
        m_unitEditorInstance = static_cast<PG_UNIT_EDITOR*>( wxPropertyGrid::RegisterEditorClass( new_editor ) );
    }
 
    it = wxPGGlobalVars->m_mapEditorClasses.find( PG_CHECKBOX_EDITOR::EDITOR_NAME );
 
    if( it == wxPGGlobalVars->m_mapEditorClasses.end() )
    {
        PG_CHECKBOX_EDITOR* cbEditor = new PG_CHECKBOX_EDITOR();
        m_checkboxEditorInstance = static_cast<PG_CHECKBOX_EDITOR*>( wxPropertyGrid::RegisterEditorClass( cbEditor ) );
    }
    else
    {
        m_checkboxEditorInstance = static_cast<PG_CHECKBOX_EDITOR*>( it->second );
    }
 
    it = wxPGGlobalVars->m_mapEditorClasses.find( PG_COLOR_EDITOR::EDITOR_NAME );
 
    if( it == wxPGGlobalVars->m_mapEditorClasses.end() )
    {
        PG_COLOR_EDITOR* colorEditor = new PG_COLOR_EDITOR();
        m_colorEditorInstance = static_cast<PG_COLOR_EDITOR*>( wxPropertyGrid::RegisterEditorClass( colorEditor ) );
    }
    else
    {
        m_colorEditorInstance = static_cast<PG_COLOR_EDITOR*>( it->second );
    }
 
    auto netlistCallback = [this]()
    {
        SCH_SELECTION& sel = m_frame->GetToolManager()->GetTool<SCH_SELECTION_TOOL>()->GetSelection();
        LIB_SYMBOL*    libSymbol = nullptr;
 
        for( EDA_ITEM* item : sel )
        {
            if( item->Type() == SCH_SYMBOL_T )
            {
                SCH_SYMBOL* symbol = static_cast<SCH_SYMBOL*>( item );
 
                if( !libSymbol )
                    libSymbol = symbol->GetLibSymbolRef().get();
                else if( libSymbol != symbol->GetLibSymbolRef().get() )
                    return std::string( "" );
            }
        }
 
        if( !libSymbol )
            return std::string( "" );
 
        wxString      symbolNetlist;
        wxArrayString pins;
 
        for( SCH_PIN* pin : libSymbol->GetGraphicalPins( 0 /* all units */, 1 /* single bodyStyle */ ) )
            pins.push_back( pin->GetNumber() + ' ' + pin->GetShownName() );
 
        if( !pins.IsEmpty() )
            symbolNetlist << EscapeString( wxJoin( pins, '\t' ), CTX_LINE );
 
        symbolNetlist << wxS( "\r" );
 
        wxArrayString fpFilters = libSymbol->GetFPFilters();
 
        if( !fpFilters.IsEmpty() )
            symbolNetlist << EscapeString( wxJoin( fpFilters, ' ' ), CTX_LINE );
 
        symbolNetlist << wxS( "\r" );
 
        return symbolNetlist.ToStdString();
    };
 
    it = wxPGGlobalVars->m_mapEditorClasses.find( PG_FPID_EDITOR::BuildEditorName( m_frame ) );
 
    if( it != wxPGGlobalVars->m_mapEditorClasses.end() )
    {
        m_fpEditorInstance = static_cast<PG_FPID_EDITOR*>( it->second );
        m_fpEditorInstance->UpdateFrame( m_frame );
        m_fpEditorInstance->UpdateCallback( netlistCallback );
    }
    else
    {
        PG_FPID_EDITOR* fpEditor = new PG_FPID_EDITOR( m_frame, netlistCallback );
        m_fpEditorInstance = static_cast<PG_FPID_EDITOR*>( wxPropertyGrid::RegisterEditorClass( fpEditor ) );
    }
 
    it = wxPGGlobalVars->m_mapEditorClasses.find( PG_URL_EDITOR::BuildEditorName( m_frame ) );
 
    if( it != wxPGGlobalVars->m_mapEditorClasses.end() )
    {
        m_urlEditorInstance = static_cast<PG_URL_EDITOR*>( it->second );
        m_urlEditorInstance->UpdateFrame( m_frame );
    }
    else
    {
        PG_URL_EDITOR* urlEditor = new PG_URL_EDITOR( m_frame );
        m_urlEditorInstance = static_cast<PG_URL_EDITOR*>( wxPropertyGrid::RegisterEditorClass( urlEditor ) );
    }
}
 
 
SCH_PROPERTIES_PANEL::~SCH_PROPERTIES_PANEL()
{
    m_unitEditorInstance->UpdateFrame( nullptr );
    m_fpEditorInstance->UpdateFrame( nullptr );
    m_urlEditorInstance->UpdateFrame( nullptr );
}
 
 
const SELECTION& SCH_PROPERTIES_PANEL::getSelection( SELECTION& aFallbackSelection )
{
    SCH_SELECTION_TOOL* selectionTool = m_frame->GetToolManager()->GetTool<SCH_SELECTION_TOOL>();
    const SELECTION& selection = selectionTool->GetSelection();
 
    if( selection.Empty() && m_frame->IsType( FRAME_SCH_SYMBOL_EDITOR ) )
    {
        SYMBOL_EDIT_FRAME* symbolFrame = static_cast<SYMBOL_EDIT_FRAME*>( m_frame );
 
        if( symbolFrame->GetCurSymbol() )
        {
            aFallbackSelection.Clear();
            aFallbackSelection.Add( symbolFrame->GetCurSymbol() );
            return aFallbackSelection;
        }
    }
 
    return selection;
}
 
 
EDA_ITEM* SCH_PROPERTIES_PANEL::getFrontItem()
{
    SELECTION fallbackSelection;
    const SELECTION& selection = getSelection( fallbackSelection );
 
    return selection.Empty() ? nullptr : selection.Front();
}
 
 
void SCH_PROPERTIES_PANEL::UpdateData()
{
    SELECTION fallbackSelection;
    const SELECTION& selection = getSelection( fallbackSelection );
 
    // Will actually just be updatePropertyValues() if selection hasn't changed
    rebuildProperties( selection );
}
 
 
void SCH_PROPERTIES_PANEL::AfterCommit()
{
    SELECTION fallbackSelection;
    const SELECTION& selection = getSelection( fallbackSelection );
 
    rebuildProperties( selection );
}
 
 
void SCH_PROPERTIES_PANEL::rebuildProperties( const SELECTION& aSelection )
{
    m_currentSymbolFieldNames.clear();
    m_currentSheetFieldNames.clear();
 
    for( EDA_ITEM* item : aSelection )
    {
        if( item->Type() == SCH_SYMBOL_T )
        {
            SCH_SYMBOL* symbol = static_cast<SCH_SYMBOL*>( item );
 
            for( const SCH_FIELD& field : symbol->GetFields() )
            {
                if( field.IsPrivate() )
                    continue;
 
                m_currentSymbolFieldNames.insert( field.GetCanonicalName() );
            }
        }
        else if( item->Type() == SCH_SHEET_T )
        {
            SCH_SHEET* sheet = static_cast<SCH_SHEET*>( item );
 
            for( const SCH_FIELD& field : sheet->GetFields() )
            {
                if( field.IsPrivate() )
                    continue;
 
                m_currentSheetFieldNames.insert( field.GetCanonicalName() );
            }
        }
    }
 
    const wxString groupFields = _HKI( "Fields" );
 
    for( const wxString& name : m_currentSymbolFieldNames )
    {
        if( !m_propMgr.GetProperty( TYPE_HASH( SCH_SYMBOL ), name ) )
        {
            m_propMgr.AddProperty( new SCH_SYMBOL_FIELD_PROPERTY( name ), groupFields )
                    .SetAvailableFunc(
                            [name]( INSPECTABLE* )
                            {
                                return SCH_PROPERTIES_PANEL::m_currentSymbolFieldNames.count( name );
                            } );
        }
    }
 
    for( const wxString& name : m_currentSheetFieldNames )
    {
        if( !m_propMgr.GetProperty( TYPE_HASH( SCH_SHEET ), name ) )
        {
            m_propMgr.AddProperty( new SCH_SHEET_FIELD_PROPERTY( name ), groupFields )
                    .SetAvailableFunc(
                            [name]( INSPECTABLE* )
                            {
                                return SCH_PROPERTIES_PANEL::m_currentSheetFieldNames.count( name );
                            } );
        }
    }
 
    PROPERTIES_PANEL::rebuildProperties( aSelection );
}
 
 
wxPGProperty* SCH_PROPERTIES_PANEL::createPGProperty( const PROPERTY_BASE* aProperty ) const
{
    wxPGProperty* prop = PGPropertyFactory( aProperty, m_frame );
 
    if( auto colorProp = dynamic_cast<PGPROPERTY_COLOR4D*>( prop ) )
    {
        COLOR4D bg = m_frame->GetColorSettings()->GetColor( LAYER_SCHEMATIC_BACKGROUND );
        colorProp->SetBackgroundColor( bg );
    }
 
    if( aProperty->Name() == GetCanonicalFieldName( FIELD_T::FOOTPRINT ) )
        prop->SetEditor( PG_FPID_EDITOR::BuildEditorName( m_frame ) );
    else if( aProperty->Name() == GetCanonicalFieldName( FIELD_T::DATASHEET ) )
        prop->SetEditor( PG_URL_EDITOR::BuildEditorName( m_frame ) );
 
    return prop;
}
 
 
PROPERTY_BASE* SCH_PROPERTIES_PANEL::getPropertyFromEvent( const wxPropertyGridEvent& aEvent ) const
{
    EDA_ITEM* item = const_cast<SCH_PROPERTIES_PANEL*>( this )->getFrontItem();
 
    if( !item || !item->IsSCH_ITEM() )
        return nullptr;
 
    SCH_ITEM* firstItem = static_cast<SCH_ITEM*>( item );
 
    wxCHECK_MSG( firstItem, nullptr, wxT( "getPropertyFromEvent for a property with nothing selected!") );
 
    PROPERTY_BASE* property = m_propMgr.GetProperty( TYPE_HASH( *firstItem ), aEvent.GetPropertyName() );
    wxCHECK_MSG( property, nullptr, wxT( "getPropertyFromEvent for a property not found on the selected item!" ) );
 
    return property;
}
 
 
void SCH_PROPERTIES_PANEL::valueChanging( wxPropertyGridEvent& aEvent )
{
    if( m_SuppressGridChangeEvents )
        return;
 
    EDA_ITEM* frontItem = getFrontItem();
 
    if( !frontItem )
        return;
 
    if( PROPERTY_BASE* property = getPropertyFromEvent( aEvent ) )
    {
        wxVariant newValue = aEvent.GetPropertyValue();
 
        if( VALIDATOR_RESULT validationFailure = property->Validate( newValue.GetAny(), frontItem ) )
        {
            wxString errorMsg = wxString::Format( wxS( "%s: %s" ), wxGetTranslation( property->Name() ),
                                                  validationFailure->get()->Format( m_frame ) );
            m_frame->ShowInfoBarError( errorMsg );
            aEvent.Veto();
            return;
        }
 
        aEvent.Skip();
    }
}
 
 
void SCH_PROPERTIES_PANEL::valueChanged( wxPropertyGridEvent& aEvent )
{
    if( m_SuppressGridChangeEvents )
        return;
 
    SELECTION fallbackSelection;
    const SELECTION& selection = getSelection( fallbackSelection );
 
    wxCHECK( getPropertyFromEvent( aEvent ), /* void */ );
 
    wxVariant   newValue = aEvent.GetPropertyValue();
    SCH_COMMIT  changes( m_frame );
    SCH_SCREEN* screen = m_frame->GetScreen();
 
    PROPERTY_COMMIT_HANDLER handler( &changes );
 
    for( EDA_ITEM* edaItem : selection )
    {
        if( !edaItem->IsSCH_ITEM() )
            continue;
 
        SCH_ITEM* item = static_cast<SCH_ITEM*>( edaItem );
        PROPERTY_BASE* property = m_propMgr.GetProperty( TYPE_HASH( *item ), aEvent.GetPropertyName() );
        wxCHECK2( property, continue );
 
        // Editing reference text in the schematic must go through the parent symbol in order to handle
        // symbol instance data properly.
        if( item->Type() == SCH_FIELD_T && static_cast<SCH_FIELD*>( item )->GetId() == FIELD_T::REFERENCE
                && m_frame->IsType( FRAME_SCH )
                && property->Name() == wxT( "Text" ) )
        {
            SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( item->GetParentSymbol() );
            wxCHECK2( symbol, continue );
 
            changes.Modify( symbol, screen, RECURSE_MODE::NO_RECURSE );
            symbol->SetRefProp( newValue.GetString() );
            symbol->SyncOtherUnits( symbol->Schematic()->CurrentSheet(), changes, property );
            continue;
        }
 
        // Editing field text in the schematic when a variant is active must use variant-aware
        // SetText to properly store the value as a variant override.
        if( item->Type() == SCH_FIELD_T
                && m_frame->IsType( FRAME_SCH )
                && property->Name() == wxT( "Text" ) )
        {
            SCH_FIELD* field = static_cast<SCH_FIELD*>( item );
            SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( item->GetParentSymbol() );
 
            if( symbol && symbol->Schematic() )
            {
                wxString variantName = symbol->Schematic()->GetCurrentVariant();
 
                if( !variantName.IsEmpty() )
                {
                    changes.Modify( symbol, screen, RECURSE_MODE::NO_RECURSE );
                    field->SetText( newValue.GetString(), &symbol->Schematic()->CurrentSheet(), variantName );
                    symbol->SyncOtherUnits( symbol->Schematic()->CurrentSheet(), changes, property,
                                            variantName );
                    continue;
                }
            }
        }
 
        // Changing a sheet's filename field requires file operations to match the dialog behavior.
        if( item->Type() == SCH_FIELD_T
                && m_frame->IsType( FRAME_SCH )
                && property->Name() == wxT( "Text" ) )
        {
            SCH_FIELD* field = static_cast<SCH_FIELD*>( item );
            SCH_SHEET* sheet = dynamic_cast<SCH_SHEET*>( item->GetParent() );
 
            if( sheet && field->GetId() == FIELD_T::SHEET_FILENAME )
            {
                SCH_EDIT_FRAME* editFrame = static_cast<SCH_EDIT_FRAME*>( m_frame );
 
                if( !handleSheetFilenameChange( editFrame, sheet, changes, newValue.GetString() ) )
                {
                    UpdateData();
                    return;
                }
 
                continue;
            }
        }
 
        if( item->Type() == SCH_TABLECELL_T )
            changes.Modify( item->GetParent(), screen, RECURSE_MODE::NO_RECURSE );
        else
            changes.Modify( item, screen, RECURSE_MODE::NO_RECURSE );
 
        item->Set( property, newValue );
 
        if( SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( item ) )
        {
            symbol->SyncOtherUnits( symbol->Schematic()->CurrentSheet(), changes, property,
                                    symbol->Schematic()->GetCurrentVariant() );
        }
    }
 
    changes.Push( _( "Edit Properties" ) );
 
    // Force a repaint of the items whose properties were changed
    // This is necessary to update field displays in the schematic view
    for( EDA_ITEM* edaItem : selection )
        m_frame->UpdateItem( edaItem );
 
    // Perform grid updates as necessary based on value change
    AfterCommit();
 
    aEvent.Skip();
}
 
 
bool SCH_PROPERTIES_PANEL::handleSheetFilenameChange( SCH_EDIT_FRAME* aFrame, SCH_SHEET* aSheet,
                                                       SCH_COMMIT& aChanges,
                                                       const wxString& aNewFilename )
{
    wxString newFilename = EnsureFileExtension( aNewFilename, FILEEXT::KiCadSchematicFileExtension );
 
    if( newFilename.IsEmpty() || !IsFullFileNameValid( newFilename ) )
    {
        DisplayError( aFrame, _( "A sheet must have a valid file name." ) );
        return false;
    }
 
    // Normalize separators to unix notation
    newFilename.Replace( wxT( "\\" ), wxT( "/" ) );
 
    wxString oldFilename = aSheet->GetFileName();
    oldFilename.Replace( wxT( "\\" ), wxT( "/" ) );
 
    if( newFilename == oldFilename )
        return true;
 
    if( !aFrame->ChangeSheetFile( aSheet, newFilename ) )
        return false;
 
    SCH_SCREEN* currentScreen = aFrame->GetCurrentSheet().LastScreen();
    aChanges.Modify( aSheet, currentScreen, RECURSE_MODE::NO_RECURSE );
    aSheet->SetFileName( newFilename );
 
    return true;
}
 
 
void SCH_PROPERTIES_PANEL::OnLanguageChanged( wxCommandEvent& aEvent )
{
    PROPERTIES_PANEL::OnLanguageChanged( aEvent );
 
    aEvent.Skip();
}
 
 
bool SCH_PROPERTIES_PANEL::getItemValue( EDA_ITEM* aItem, PROPERTY_BASE* aProperty, wxVariant& aValue )
{
    // For SCH_FIELD "Text" property, return the variant-aware value when a variant is active
    if( aItem->Type() == SCH_FIELD_T
            && m_frame->IsType( FRAME_SCH )
            && aProperty->Name() == wxT( "Text" ) )
    {
        SCH_FIELD* field = static_cast<SCH_FIELD*>( aItem );
        SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( field->GetParentSymbol() );
 
        if( symbol && symbol->Schematic() )
        {
            wxString variantName = symbol->Schematic()->GetCurrentVariant();
 
            if( !variantName.IsEmpty() )
            {
                wxString text = field->GetText( &symbol->Schematic()->CurrentSheet(), variantName );
                aValue = wxVariant( text );
                return true;
            }
        }
    }
 
    return PROPERTIES_PANEL::getItemValue( aItem, aProperty, aValue );
}