dialog_sheet_properties.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2009 Wayne Stambaugh <[email protected]>
 * Copyright (C) 2014-2021 KiCad Developers, see CHANGELOG.txt for contributors.
 *
 * 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 <dialog_sheet_properties.h>
#include <kiface_base.h>
#include <wx/string.h>
#include <wx/log.h>
#include <wx/tooltip.h>
#include <confirm.h>
#include <validators.h>
#include <wildcards_and_files_ext.h>
#include <widgets/tab_traversal.h>
#include <sch_edit_frame.h>
#include <sch_sheet.h>
#include <schematic.h>
#include <bitmaps.h>
#include <eeschema_settings.h>
#include <settings/color_settings.h>
#include <trace_helpers.h>
#include "panel_eeschema_color_settings.h"

DIALOG_SHEET_PROPERTIES::DIALOG_SHEET_PROPERTIES( SCH_EDIT_FRAME* aParent, SCH_SHEET* aSheet,
 bool* aClearAnnotationNewItems ) :
 DIALOG_SHEET_PROPERTIES_BASE( aParent ),
 m_frame( aParent ),
 m_clearAnnotationNewItems( aClearAnnotationNewItems ),
 m_borderWidth( aParent, m_borderWidthLabel, m_borderWidthCtrl, m_borderWidthUnits ),
 m_dummySheet( *aSheet ),
 m_dummySheetNameField( wxDefaultPosition, SHEETNAME, &m_dummySheet )
{
 m_sheet = aSheet;
 m_fields = new FIELDS_GRID_TABLE<SCH_FIELD>( this, aParent, m_grid, m_sheet );
 m_width = 100; // Will be later set to a better value
 m_delayedFocusRow = SHEETNAME;
 m_delayedFocusColumn = FDC_VALUE;

 // Give a bit more room for combobox editors
 m_grid->SetDefaultRowSize( m_grid->GetDefaultRowSize() + 4 );

 m_grid->SetTable( m_fields );
 m_grid->PushEventHandler( new FIELDS_GRID_TRICKS( m_grid, this ) );
 m_grid->SetSelectionMode( wxGrid::wxGridSelectRows );

 // Show/hide columns according to user's preference
 auto cfg = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() );
 wxASSERT( cfg );

 if( cfg )
 {
 m_shownColumns = cfg->m_Appearance.edit_sheet_visible_columns;
 m_grid->ShowHideColumns( m_shownColumns );
 }

 wxToolTip::Enable( true );
 m_stdDialogButtonSizerOK->SetDefault();

 // Configure button logos
 m_bpAdd->SetBitmap( KiBitmap( BITMAPS::small_plus ) );
 m_bpDelete->SetBitmap( KiBitmap( BITMAPS::small_trash ) );
 m_bpMoveUp->SetBitmap( KiBitmap( BITMAPS::small_up ) );
 m_bpMoveDown->SetBitmap( KiBitmap( BITMAPS::small_down ) );

 // Set font sizes
 m_hierarchicalPathLabel->SetFont( KIUI::GetInfoFont( this ) );

 // wxFormBuilder doesn't include this event...
 m_grid->Connect( wxEVT_GRID_CELL_CHANGING,
 wxGridEventHandler( DIALOG_SHEET_PROPERTIES::OnGridCellChanging ),
 nullptr, this );

 finishDialogSettings();
}


DIALOG_SHEET_PROPERTIES::~DIALOG_SHEET_PROPERTIES()
{
 auto cfg = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() );
 wxASSERT( cfg );

 if( cfg )
 cfg->m_Appearance.edit_sheet_visible_columns = m_grid->GetShownColumns();

 // Prevents crash bug in wxGrid's d'tor
 m_grid->DestroyTable( m_fields );

 m_grid->Disconnect( wxEVT_GRID_CELL_CHANGING,
 wxGridEventHandler( DIALOG_SHEET_PROPERTIES::OnGridCellChanging ),
 nullptr, this );

 // Delete the GRID_TRICKS.
 m_grid->PopEventHandler( true );
}


bool DIALOG_SHEET_PROPERTIES::TransferDataToWindow()
{
 if( !wxDialog::TransferDataToWindow() )
 return false;

 // Push a copy of each field into m_updateFields
 for( SCH_FIELD& field : m_sheet->GetFields() )
 {
 SCH_FIELD field_copy( field );

#ifdef __WINDOWS__
 // Filenames are stored using unix notation
 if( field_copy.GetId() == SHEETFILENAME )
 {
 wxString filename = field_copy.GetText();
 filename.Replace( wxT( "/" ), wxT( "\\" ) );
 field_copy.SetText( filename );
 }
#endif

 // change offset to be symbol-relative
 field_copy.Offset( -m_sheet->GetPosition() );

 m_fields->push_back( field_copy );
 }

 // notify the grid
 wxGridTableMessage msg( m_fields, wxGRIDTABLE_NOTIFY_ROWS_APPENDED, m_fields->size() );
 m_grid->ProcessTableMessage( msg );
 AdjustGridColumns( m_grid->GetRect().GetWidth() );

 // border width
 m_borderWidth.SetValue( m_sheet->GetBorderWidth() );

 // set up color swatches
 KIGFX::COLOR4D borderColor = m_sheet->GetBorderColor();
 KIGFX::COLOR4D backgroundColor = m_sheet->GetBackgroundColor();

 m_borderSwatch->SetDefaultColor( COLOR4D::UNSPECIFIED );
 m_backgroundSwatch->SetDefaultColor( COLOR4D::UNSPECIFIED );

 m_borderSwatch->SetSwatchColor( borderColor, false );
 m_backgroundSwatch->SetSwatchColor( backgroundColor, false );

 KIGFX::COLOR4D canvas = m_frame->GetColorSettings()->GetColor( LAYER_SCHEMATIC_BACKGROUND );
 m_borderSwatch->SetSwatchBackground( canvas );
 m_backgroundSwatch->SetSwatchBackground( canvas );

 SCH_SHEET_LIST hierarchy = m_frame->Schematic().GetFullHierarchy();
 SCH_SHEET_PATH instance = m_frame->GetCurrentSheet();

 instance.push_back( m_sheet );

 wxString nextPageNumber = m_sheet->GetPageNumber( instance );

 m_pageNumberTextCtrl->ChangeValue( nextPageNumber );

 Layout();

 return true;
}


bool DIALOG_SHEET_PROPERTIES::Validate()
{
 wxString msg;
 LIB_ID id;

 if( !m_grid->CommitPendingChanges() || !m_grid->Validate() )
 return false;

 // Check for missing field names.
 for( size_t i = SHEET_MANDATORY_FIELDS; i < m_fields->size(); ++i )
 {
 SCH_FIELD& field = m_fields->at( i );
 wxString fieldName = field.GetName( false );

 if( fieldName.IsEmpty() )
 {
 DisplayErrorMessage( this, _( "Fields must have a name." ) );

 m_delayedFocusColumn = FDC_NAME;
 m_delayedFocusRow = i;

 return false;
 }
 }

 return true;
}


static bool positioningChanged( const SCH_FIELD& a, const SCH_FIELD& b )
{
 if( a.GetPosition() != b.GetPosition() )
 return true;

 if( a.GetHorizJustify() != b.GetHorizJustify() )
 return true;

 if( a.GetVertJustify() != b.GetVertJustify() )
 return true;

 if( a.GetTextAngle() != b.GetTextAngle() )
 return true;

 return false;
}


static bool positioningChanged( FIELDS_GRID_TABLE<SCH_FIELD>* a, std::vector<SCH_FIELD>& b )
{
 for( size_t i = 0; i < SHEET_MANDATORY_FIELDS; ++i )
 {
 if( positioningChanged( a->at( i ), b.at( i ) ) )
 return true;
 }

 return false;
}


bool DIALOG_SHEET_PROPERTIES::TransferDataFromWindow()
{
 if( !wxDialog::TransferDataFromWindow() ) // Calls our Validate() method.
 return false;

 // Sheet file names can be relative or absolute.
 wxString sheetFileName = m_fields->at( SHEETFILENAME ).GetText();

 // Ensure filepath is not empty. (In normal use will be caught by grid validators,
 // but unedited data from existing files can be bad.)
 if( sheetFileName.IsEmpty() )
 {
 DisplayError( this, _( "A sheet must have a valid file name." ) );
 return false;
 }

 // Ensure the filename extension is OK. In normal use will be caught by grid validators,
 // but unedited data from existing files can be bad.
 wxFileName fn( sheetFileName );

 if( fn.GetExt().CmpNoCase( KiCadSchematicFileExtension ) != 0 )
 {
 DisplayError( this, _( "Sheet file must have a '.kicad_sch' extension." ) );
 return false;
 }

 wxString newRelativeFilename = fn.GetFullPath();

 // Inside Eeschema, filenames are stored using unix notation
 newRelativeFilename.Replace( wxT( "\\" ), wxT( "/" ) );

 wxString oldFilename = m_sheet->GetFields()[ SHEETFILENAME ].GetText();
 oldFilename.Replace( wxT( "\\" ), wxT( "/" ) );

 bool filename_changed = oldFilename != newRelativeFilename;

 if( filename_changed || m_sheet->IsNew() )
 {
 SCH_SCREEN* currentScreen = m_frame->GetCurrentSheet().LastScreen();

 wxCHECK( currentScreen, false );

 bool clearFileName = false;

 // This can happen for the root sheet when opening Eeschema in the stand alone mode.
 if( currentScreen->GetFileName().IsEmpty() )
 {
 clearFileName = true;
 currentScreen->SetFileName( m_frame->Prj().AbsolutePath( wxT( "noname.kicad_sch" ) ) );
 }

 wxFileName tmp( fn );
 wxFileName screenFileName = currentScreen->GetFileName();

 if( fn.IsAbsolute() && fn.MakeRelativeTo( screenFileName.GetPath() ) )
 {
 wxMessageDialog makeRelDlg( this, _( "Use relative path for sheet file?" ),
 _( "Sheet File Path" ),
 wxYES_NO | wxYES_DEFAULT | wxICON_QUESTION | wxCENTER );

 makeRelDlg.SetExtendedMessage( _( "Using relative hierarchical sheet file name paths "
 "improves schematic portability across systems and "
 "platforms. Using absolute paths can result in "
 "portability issues." ) );
 makeRelDlg.SetYesNoLabels( wxMessageDialog::ButtonLabel( _( "Use Relative Path" ) ),
 wxMessageDialog::ButtonLabel( _( "Use Absolute Path" ) ) );

 if( makeRelDlg.ShowModal() == wxID_YES )
 {
 wxLogTrace( tracePathsAndFiles, "\n Converted absolute path: '%s'"
 "\n to relative path: '%s'",
 tmp.GetPath(),
 fn.GetPath() );
 m_fields->at( SHEETFILENAME ).SetText( fn.GetFullPath() );
 newRelativeFilename = fn.GetFullPath();
 }
 }

 if( !onSheetFilenameChanged( newRelativeFilename ) )
 {
 if( clearFileName )
 currentScreen->SetFileName( wxEmptyString );

 return false;
 }

 if( clearFileName )
 currentScreen->SetFileName( wxEmptyString );

 // One last validity check (and potential repair) just to be sure to be sure
 SCH_SHEET_LIST repairedList( &m_frame->Schematic().Root(), true );
 }

 wxString newSheetname = m_fields->at( SHEETNAME ).GetText();

 if( newSheetname.IsEmpty() )
 newSheetname = _( "Untitled Sheet" );

 m_fields->at( SHEETNAME ).SetText( newSheetname );

 // change all field positions from relative to absolute
 for( unsigned i = 0; i < m_fields->size(); ++i )
 m_fields->at( i ).Offset( m_sheet->GetPosition() );

 if( positioningChanged( m_fields, m_sheet->GetFields() ) )
 m_sheet->ClearFieldsAutoplaced();

 m_sheet->SetFields( *m_fields );

 m_sheet->SetBorderWidth( m_borderWidth.GetValue() );

 COLOR_SETTINGS* colorSettings = m_frame->GetColorSettings();

 if( colorSettings->GetOverrideSchItemColors()
 && ( m_sheet->GetBorderColor() != m_borderSwatch->GetSwatchColor() ||
 m_sheet->GetBackgroundColor() != m_backgroundSwatch->GetSwatchColor() ) )
 {
 wxPanel temp( this );
 temp.Hide();
 PANEL_EESCHEMA_COLOR_SETTINGS prefs( m_frame, &temp );
 wxString checkboxLabel = prefs.m_optOverrideColors->GetLabel();

 KIDIALOG dlg( this, _( "Note: item colors are overridden in the current color theme." ),
 KIDIALOG::KD_WARNING );
 dlg.ShowDetailedText( wxString::Format( _( "To see individual item colors uncheck '%s'\n"
 "in Preferences > Eeschema > Colors." ),
 checkboxLabel ) );
 dlg.DoNotShowCheckbox( __FILE__, __LINE__ );
 dlg.ShowModal();
 }

 m_sheet->SetBorderColor( m_borderSwatch->GetSwatchColor() );
 m_sheet->SetBackgroundColor( m_backgroundSwatch->GetSwatchColor() );

 SCH_SHEET_LIST hierarchy = m_frame->Schematic().GetFullHierarchy();
 SCH_SHEET_PATH instance = m_frame->GetCurrentSheet();

 instance.push_back( m_sheet );

 if( m_sheet->IsNew() )
 m_sheet->AddInstance( instance );

 m_sheet->SetPageNumber( instance, m_pageNumberTextCtrl->GetValue() );

 m_frame->TestDanglingEnds();

 // Refresh all sheets in case ordering changed.
 for( SCH_ITEM* item : m_frame->GetScreen()->Items().OfType( SCH_SHEET_T ) )
 m_frame->UpdateItem( item );

 m_frame->OnModify();

 return true;
}


bool DIALOG_SHEET_PROPERTIES::onSheetFilenameChanged( const wxString& aNewFilename )
{
 wxString msg;

 // Sheet file names are relative to the path of the current sheet. This allows for
 // nesting of schematic files in subfolders. Screen file names are always absolute.
 wxFileName sheetFileName( aNewFilename );

 if( sheetFileName.GetExt().IsEmpty() )
 {
 sheetFileName.SetExt( KiCadSchematicFileExtension );
 }
 else if( sheetFileName.GetExt().CmpNoCase( KiCadSchematicFileExtension ) != 0 )
 {
 msg = wxString::Format( _( "The file '%s' does not appear to be a valid schematic file." ),
 sheetFileName.GetFullName() );
 wxMessageDialog badSchFileDialog( this, msg, _( "Invalid Schematic File" ),
 wxOK | wxCENTRE | wxICON_EXCLAMATION );
 badSchFileDialog.ShowModal();
 return false;
 }

 SCH_SHEET_LIST fullHierarchy = m_frame->Schematic().GetFullHierarchy();
 std::vector<SCH_SHEET_INSTANCE> sheetInstances = fullHierarchy.GetSheetInstances();
 wxFileName screenFileName( sheetFileName );
 wxFileName tmp( sheetFileName );

 SCH_SCREEN* currentScreen = m_frame->GetCurrentSheet().LastScreen();

 wxCHECK( currentScreen, false );

 // SCH_SCREEN file names are always absolute.
 wxFileName currentScreenFileName = currentScreen->GetFileName();

 if( !screenFileName.Normalize( wxPATH_NORM_ALL, currentScreenFileName.GetPath() ) )
 {
 msg = wxString::Format( _( "Cannot normalize new sheet schematic file path:\n"
 "'%s'\n"
 "against parent sheet schematic file path:\n"
 "'%s'." ),
 sheetFileName.GetPath(),
 currentScreenFileName.GetPath() );
 DisplayError( this, msg );
 return false;
 }

 wxString newAbsoluteFilename = screenFileName.GetFullPath();

 // Inside Eeschema, filenames are stored using unix notation
 newAbsoluteFilename.Replace( wxT( "\\" ), wxT( "/" ) );

 bool renameFile = false;
 bool loadFromFile = false;
 bool clearAnnotation = false;
 bool restoreSheet = false;
 bool isExistingSheet = false;
 SCH_SCREEN* useScreen = nullptr;
 SCH_SCREEN* oldScreen = nullptr;

 // Search for a schematic file having the same filename already in use in the hierarchy
 // or on disk, in order to reuse it.
 if( !m_frame->Schematic().Root().SearchHierarchy( newAbsoluteFilename, &useScreen ) )
 {
 loadFromFile = wxFileExists( newAbsoluteFilename );

 wxLogTrace( tracePathsAndFiles, wxT( "\n Sheet requested file '%s', %s" ),
 newAbsoluteFilename,
 loadFromFile ? wxT( "found" ) : wxT( "not found" ) );
 }

 if( m_sheet->GetScreen() == nullptr ) // New just created sheet.
 {
 if( !m_frame->AllowCaseSensitiveFileNameClashes( newAbsoluteFilename ) )
 return false;

 if( useScreen || loadFromFile ) // Load from existing file.
 {
 clearAnnotation = true;

 if( !IsOK( this, wxString::Format( _( "'%s' already exists." ),
 sheetFileName.GetFullName() )
 + wxT( "\n\n" )
 + wxString::Format( _( "Link '%s' to this file?" ),
 newAbsoluteFilename ) ) )
 {
 return false;
 }
 }
 else // New file.
 {
 m_frame->InitSheet( m_sheet, newAbsoluteFilename );
 }
 }
 else // Existing sheet.
 {
 bool isUndoable = true;
 isExistingSheet = true;

 if( !m_frame->AllowCaseSensitiveFileNameClashes( newAbsoluteFilename ) )
 return false;

 // We are always using here a case insensitive comparison to avoid issues
 // under Windows, although under Unix filenames are case sensitive.
 // But many users create schematic under both Unix and Windows
 // **
 // N.B. 1: aSheet->GetFileName() will return a relative path
 // aSheet->GetScreen()->GetFileName() returns a full path
 //
 // N.B. 2: newFilename uses the unix notation for separator.
 // so we must use it also to compare the old and new filenames
 wxString oldAbsoluteFilename = m_sheet->GetScreen()->GetFileName();
 oldAbsoluteFilename.Replace( wxT( "\\" ), wxT( "/" ) );

 if( newAbsoluteFilename.Cmp( oldAbsoluteFilename ) != 0 )
 {
 // Sheet file name changes cannot be undone.
 isUndoable = false;

 if( useScreen || loadFromFile ) // Load from existing file.
 {
 clearAnnotation = true;

 if( !IsOK( this, wxString::Format( _( "Change '%s' link from '%s' to '%s'?" ),
 newAbsoluteFilename,
 m_sheet->GetFileName(),
 sheetFileName.GetFullName() )
 + wxT( "\n\n" )
 + _( "This action cannot be undone." ) ) )
 {
 return false;
 }

 if( loadFromFile )
 m_sheet->SetScreen( nullptr );
 }
 else // Save to new file name.
 {
 if( m_sheet->GetScreenCount() > 1 )
 {
 if( !IsOK( this, wxString::Format( _( "Create new file '%s' with contents of '%s'?" ),
 sheetFileName.GetFullName(),
 m_sheet->GetFileName() )
 + wxT( "\n\n" )
 + _( "This action cannot be undone." ) ) )
 {
 return false;
 }
 }

 renameFile = true;
 }
 }

 // If we are renaming files, the undo/redo list becomes invalid and must be cleared
 if( isUndoable )
 m_frame->SaveCopyInUndoList( m_frame->GetScreen(), m_sheet, UNDO_REDO::CHANGED, false );
 else
 m_frame->ClearUndoRedoList();

 if( renameFile )
 {
 SCH_PLUGIN::SCH_PLUGIN_RELEASER pi( SCH_IO_MGR::FindPlugin( SCH_IO_MGR::SCH_KICAD ) );

 // If the associated screen is shared by more than one sheet, do not
 // change the filename of the corresponding screen here.
 // (a new screen will be created later)
 // if it is not shared, update the filename
 if( m_sheet->GetScreenCount() <= 1 )
 m_sheet->GetScreen()->SetFileName( newAbsoluteFilename );

 try
 {
 pi->Save( newAbsoluteFilename, m_sheet, &m_frame->Schematic() );
 }
 catch( const IO_ERROR& ioe )
 {
 msg = wxString::Format( _( "Error occurred saving schematic file '%s'." ),
 newAbsoluteFilename );
 DisplayErrorMessage( this, msg, ioe.What() );

 msg = wxString::Format( _( "Failed to save schematic '%s'" ),
 newAbsoluteFilename );
 m_frame->SetMsgPanel( wxEmptyString, msg );
 return false;
 }

 // If the associated screen is shared by more than one sheet, remove the
 // screen and reload the file to a new screen. Failure to do this will trash
 // the screen reference counting in complex hierarchies.
 if( m_sheet->GetScreenCount() > 1 )
 {
 oldScreen = m_sheet->GetScreen();
 m_sheet->SetScreen( nullptr );
 loadFromFile = true;
 }
 }
 }

 SCH_SHEET_PATH& currentSheet = m_frame->GetCurrentSheet();

 if( useScreen )
 {
 // Create a temporary sheet for recursion testing to prevent a possible recursion error.
 std::unique_ptr< SCH_SHEET> tmpSheet = std::make_unique<SCH_SHEET>();
 tmpSheet->GetFields()[SHEETNAME] = m_fields->at( SHEETNAME );
 tmpSheet->GetFields()[SHEETFILENAME].SetText( sheetFileName.GetFullPath() );
 tmpSheet->SetScreen( useScreen );

 // No need to check for valid library IDs if we are using an existing screen.
 if( m_frame->CheckSheetForRecursion( tmpSheet.get(), &currentSheet ) )
 {
 if( restoreSheet )
 currentSheet.LastScreen()->Append( m_sheet );

 return false;
 }

 // It's safe to set the sheet screen now.
 m_sheet->SetScreen( useScreen );
 }
 else if( loadFromFile )
 {
 if( isExistingSheet )
 {
 // Temporarily remove the sheet from the current schematic page so that recursion
 // and symbol library link tests can be performed with the modified sheet settings.
 restoreSheet = true;
 currentSheet.LastScreen()->Remove( m_sheet );
 }

 if( !m_frame->LoadSheetFromFile( m_sheet, &currentSheet, newAbsoluteFilename )
 || m_frame->CheckSheetForRecursion( m_sheet, &currentSheet ) )
 {
 if( restoreSheet )
 {
 // If we cleared the previous screen, restore it before returning to the user
 if( oldScreen )
 m_sheet->SetScreen( oldScreen );

 currentSheet.LastScreen()->Append( m_sheet );
 }

 return false;
 }

 if( restoreSheet )
 currentSheet.LastScreen()->Append( m_sheet );

 // The full hiearchy needs to be reloaded because any sub-sheet that occurred on
 // file load will have new SCH_SHEET object pointers.
 fullHierarchy = m_frame->Schematic().GetFullHierarchy();
 fullHierarchy.UpdateSheetInstances( sheetInstances );
 }

 if( m_clearAnnotationNewItems )
 *m_clearAnnotationNewItems = clearAnnotation;

 return true;
}


void DIALOG_SHEET_PROPERTIES::OnGridCellChanging( wxGridEvent& event )
{
 bool success = true;
 wxGridCellEditor* editor = m_grid->GetCellEditor( event.GetRow(), event.GetCol() );
 wxControl* control = editor->GetControl();
 wxTextEntry* textControl = dynamic_cast<wxTextEntry*>( control );

 // Short-circuit the validator's more generic "can't be empty" message for the
 // two mandatory fields:
 if( event.GetRow() == SHEETNAME && event.GetCol() == FDC_VALUE )
 {
 if( textControl && textControl->IsEmpty() )
 {
 wxMessageBox( _( "A sheet must have a name." ) );
 success = false;
 }
 }
 else if( event.GetRow() == SHEETFILENAME && event.GetCol() == FDC_VALUE && textControl )
 {
 if( textControl->IsEmpty() )
 {
 wxMessageBox( _( "A sheet must have a file specified." ) );
 success = false;
 }
 }

 if( success && control && control->GetValidator() )
 success = control->GetValidator()->Validate( control );

 if( !success )
 {
 event.Veto();
 m_delayedFocusRow = event.GetRow();
 m_delayedFocusColumn = event.GetCol();
 }

 editor->DecRef();
}


void DIALOG_SHEET_PROPERTIES::OnAddField( wxCommandEvent& event )
{
 if( !m_grid->CommitPendingChanges() )
 return;

 int fieldID = m_fields->size();
 SCH_FIELD newField( wxPoint( 0, 0 ), fieldID, m_sheet,
 SCH_SHEET::GetDefaultFieldName( fieldID ) );

 newField.SetTextAngle( m_fields->at( SHEETNAME ).GetTextAngle() );

 m_fields->push_back( newField );

 // notify the grid
 wxGridTableMessage msg( m_fields, wxGRIDTABLE_NOTIFY_ROWS_APPENDED, 1 );
 m_grid->ProcessTableMessage( msg );

 m_grid->MakeCellVisible( m_fields->size() - 1, 0 );
 m_grid->SetGridCursor( m_fields->size() - 1, 0 );

 m_grid->EnableCellEditControl();
 m_grid->ShowCellEditControl();
}


void DIALOG_SHEET_PROPERTIES::OnDeleteField( wxCommandEvent& event )
{
 wxArrayInt selectedRows = m_grid->GetSelectedRows();

 if( selectedRows.empty() && m_grid->GetGridCursorRow() >= 0 )
 selectedRows.push_back( m_grid->GetGridCursorRow() );

 if( selectedRows.empty() )
 return;

 for( int row : selectedRows )
 {
 if( row < SHEET_MANDATORY_FIELDS )
 {
 DisplayError( this, wxString::Format( _( "The first %d fields are mandatory." ),
 SHEET_MANDATORY_FIELDS ) );
 return;
 }
 }

 m_grid->CommitPendingChanges( true /* quiet mode */ );

 // Reverse sort so deleting a row doesn't change the indexes of the other rows.
 selectedRows.Sort( []( int* first, int* second ) { return *second - *first; } );

 for( int row : selectedRows )
 {
 m_fields->erase( m_fields->begin() + row );

 // notify the grid
 wxGridTableMessage msg( m_fields, wxGRIDTABLE_NOTIFY_ROWS_DELETED, row, 1 );
 m_grid->ProcessTableMessage( msg );

 if( m_grid->GetNumberRows() > 0 )
 {
 m_grid->MakeCellVisible( std::max( 0, row-1 ), m_grid->GetGridCursorCol() );
 m_grid->SetGridCursor( std::max( 0, row-1 ), m_grid->GetGridCursorCol() );
 }
 }
}


void DIALOG_SHEET_PROPERTIES::OnMoveUp( wxCommandEvent& event )
{
 if( !m_grid->CommitPendingChanges() )
 return;

 int i = m_grid->GetGridCursorRow();

 if( i > SHEET_MANDATORY_FIELDS )
 {
 SCH_FIELD tmp = m_fields->at( (unsigned) i );
 m_fields->erase( m_fields->begin() + i, m_fields->begin() + i + 1 );
 m_fields->insert( m_fields->begin() + i - 1, tmp );
 m_grid->ForceRefresh();

 m_grid->SetGridCursor( i - 1, m_grid->GetGridCursorCol() );
 m_grid->MakeCellVisible( m_grid->GetGridCursorRow(), m_grid->GetGridCursorCol() );
 }
 else
 wxBell();
}


void DIALOG_SHEET_PROPERTIES::OnMoveDown( wxCommandEvent& event )
{
 if( !m_grid->CommitPendingChanges() )
 return;

 int i = m_grid->GetGridCursorRow();

 if( i >= SHEET_MANDATORY_FIELDS && i < m_grid->GetNumberRows() - 1 )
 {
 SCH_FIELD tmp = m_fields->at( (unsigned) i );
 m_fields->erase( m_fields->begin() + i, m_fields->begin() + i + 1 );
 m_fields->insert( m_fields->begin() + i + 1, tmp );
 m_grid->ForceRefresh();

 m_grid->SetGridCursor( i + 1, m_grid->GetGridCursorCol() );
 m_grid->MakeCellVisible( m_grid->GetGridCursorRow(), m_grid->GetGridCursorCol() );
 }
 else
 wxBell();
}


void DIALOG_SHEET_PROPERTIES::AdjustGridColumns( int aWidth )
{
 m_width = aWidth;
 // Account for scroll bars
 aWidth -= ( m_grid->GetSize().x - m_grid->GetClientSize().x );

 m_grid->AutoSizeColumn( 0 );

 int fixedColsWidth = m_grid->GetColSize( 0 );

 for( int i = 2; i < m_grid->GetNumberCols(); i++ )
 fixedColsWidth += m_grid->GetColSize( i );

 int colSize = std::max( aWidth - fixedColsWidth, -1 );
 colSize = ( colSize == 0 ) ? -1 : colSize; // don't hide the column!

 m_grid->SetColSize( 1, colSize );
}


void DIALOG_SHEET_PROPERTIES::OnUpdateUI( wxUpdateUIEvent& event )
{
 wxString shownColumns = m_grid->GetShownColumns();

 if( shownColumns != m_shownColumns )
 {
 m_shownColumns = shownColumns;

 if( !m_grid->IsCellEditControlShown() )
 AdjustGridColumns( m_grid->GetRect().GetWidth() );
 }

 // Propagate changes in sheetname to displayed hierarchical path
 wxString hierarchicalPath = _( "Hierarchical path: " );

 hierarchicalPath += m_frame->GetCurrentSheet().PathHumanReadable( false );

 if( hierarchicalPath.Last() != '/' )
 hierarchicalPath.Append( '/' );

 wxGridCellEditor* editor = m_grid->GetCellEditor( SHEETNAME, FDC_VALUE );
 wxControl* control = editor->GetControl();
 wxTextEntry* textControl = dynamic_cast<wxTextEntry*>( control );
 wxString sheetName;

 if( textControl )
 sheetName = textControl->GetValue();
 else
 sheetName = m_grid->GetCellValue( SHEETNAME, FDC_VALUE );

 m_dummySheet.SetFields( *m_fields );
 m_dummySheetNameField.SetText( sheetName );
 hierarchicalPath += m_dummySheetNameField.GetShownText();

 editor->DecRef();

 if( m_hierarchicalPathLabel->GetLabel() != hierarchicalPath )
 m_hierarchicalPathLabel->SetLabel( hierarchicalPath );

 // Handle a delayed focus
 if( m_delayedFocusRow >= 0 )
 {
 m_grid->SetFocus();
 m_grid->MakeCellVisible( m_delayedFocusRow, m_delayedFocusColumn );
 m_grid->SetGridCursor( m_delayedFocusRow, m_delayedFocusColumn );


 m_grid->EnableCellEditControl( true );
 m_grid->ShowCellEditControl();

 m_delayedFocusRow = -1;
 m_delayedFocusColumn = -1;
 }
}


void DIALOG_SHEET_PROPERTIES::OnSizeGrid( wxSizeEvent& event )
{
 auto new_size = event.GetSize().GetX();

 if( m_width != new_size )
 {
 AdjustGridColumns( new_size );
 }

 // Always propagate for a grid repaint (needed if the height changes, as well as width)
 event.Skip();
}


void DIALOG_SHEET_PROPERTIES::OnInitDlg( wxInitDialogEvent& event )
{
 TransferDataToWindow();

 // Now all widgets have the size fixed, call FinishDialogSettings
 finishDialogSettings();
}