sch_edit_frame.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2017 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright The KiCad Developers, see AUTHORS.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 <algorithm>
#include <api/api_handler_sch.h>
#include <api/api_server.h>
#include <base_units.h>
#include <bitmaps.h>
#include <symbol_library.h>
#include <confirm.h>
#include <connection_graph.h>
#include <dialogs/dialog_erc.h>
#include <dialogs/dialog_schematic_find.h>
#include <dialogs/dialog_book_reporter.h>
#include <dialogs/dialog_symbol_fields_table.h>
#include <widgets/design_block_pane.h>
#include <eeschema_id.h>
#include <executable_names.h>
#include <gal/graphics_abstraction_layer.h>
#include <geometry/shape_segment.h>
#include <gestfich.h>
#include <dialogs/html_message_box.h>
#include <invoke_sch_dialog.h>
#include <string_utils.h>
#include <kiface_base.h>
#include <kiplatform/app.h>
#include <kiway.h>
#include <symbol_edit_frame.h>
#include <symbol_viewer_frame.h>
#include <pgm_base.h>
#include <core/profile.h>
#include <project/project_file.h>
#include <project/net_settings.h>
#include <python_scripting.h>
#include <sch_edit_frame.h>
#include <symbol_chooser_frame.h>
#include <sch_painter.h>
#include <sch_marker.h>
#include <sch_sheet_pin.h>
#include <sch_commit.h>
#include <sch_rule_area.h>
#include <settings/settings_manager.h>
#include <advanced_config.h>
#include <sim/simulator_frame.h>
#include <tool/action_manager.h>
#include <tool/action_toolbar.h>
#include <tool/common_control.h>
#include <tool/common_tools.h>
#include <tool/embed_tool.h>
#include <tool/picker_tool.h>
#include <tool/properties_tool.h>
#include <tool/selection.h>
#include <tool/tool_dispatcher.h>
#include <tool/tool_manager.h>
#include <tool/zoom_tool.h>
#include <tools/ee_actions.h>
#include <tools/ee_grid_helper.h>
#include <tools/ee_inspection_tool.h>
#include <tools/ee_point_editor.h>
#include <tools/sch_design_block_control.h>
#include <tools/sch_drawing_tools.h>
#include <tools/sch_edit_tool.h>
#include <tools/sch_edit_table_tool.h>
#include <tools/sch_editor_conditions.h>
#include <tools/sch_editor_control.h>
#include <tools/sch_line_wire_bus_tool.h>
#include <tools/sch_move_tool.h>
#include <tools/sch_navigate_tool.h>
#include <tools/sch_find_replace_tool.h>
#include <unordered_set>
#include <view/view_controls.h>
#include <widgets/wx_infobar.h>
#include <widgets/hierarchy_pane.h>
#include <widgets/sch_properties_panel.h>
#include <widgets/sch_search_pane.h>
#include <wildcards_and_files_ext.h>
#include <wx/cmdline.h>
#include <wx/app.h>
#include <wx/filedlg.h>
#include <wx/socket.h>
#include <wx/debug.h>
#include <widgets/panel_sch_selection_filter.h>
#include <widgets/wx_aui_utils.h>
#include <drawing_sheet/ds_proxy_view_item.h>
#include <project/project_local_settings.h>
 
#ifdef KICAD_IPC_API
#include <api/api_plugin_manager.h>
#include <api/api_utils.h>
#endif
 
 
#define DIFF_SYMBOLS_DIALOG_NAME wxT( "DiffSymbolsDialog" )
 
 
BEGIN_EVENT_TABLE( SCH_EDIT_FRAME, SCH_BASE_FRAME )
    EVT_SOCKET( ID_EDA_SOCKET_EVENT_SERV, EDA_DRAW_FRAME::OnSockRequestServer )
    EVT_SOCKET( ID_EDA_SOCKET_EVENT, EDA_DRAW_FRAME::OnSockRequest )
 
    EVT_SIZE( SCH_EDIT_FRAME::OnSize )
 
    EVT_MENU_RANGE( ID_FILE1, ID_FILEMAX, SCH_EDIT_FRAME::OnLoadFile )
    EVT_MENU( ID_FILE_LIST_CLEAR, SCH_EDIT_FRAME::OnClearFileHistory )
 
    EVT_MENU( ID_IMPORT_NON_KICAD_SCH, SCH_EDIT_FRAME::OnImportProject )
 
    EVT_MENU( wxID_EXIT, SCH_EDIT_FRAME::OnExit )
    EVT_MENU( wxID_CLOSE, SCH_EDIT_FRAME::OnExit )
 
    // Drop files event
    EVT_DROP_FILES( SCH_EDIT_FRAME::OnDropFiles )
END_EVENT_TABLE()
 
 
wxDEFINE_EVENT( EDA_EVT_SCHEMATIC_CHANGING, wxCommandEvent );
wxDEFINE_EVENT( EDA_EVT_SCHEMATIC_CHANGED, wxCommandEvent );
 
 
SCH_EDIT_FRAME::SCH_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
        SCH_BASE_FRAME( aKiway, aParent, FRAME_SCH, wxT( "Eeschema" ), wxDefaultPosition,
                        wxDefaultSize, KICAD_DEFAULT_DRAWFRAME_STYLE, SCH_EDIT_FRAME_NAME ),
    m_ercDialog( nullptr ),
    m_diffSymbolDialog( nullptr ),
    m_symbolFieldsTableDialog( nullptr ),
    m_netNavigator( nullptr ),
    m_highlightedConnChanged( false ),
    m_designBlocksPane( nullptr )
{
    m_maximizeByDefault = true;
    m_schematic = new SCHEMATIC( nullptr );
 
    m_showBorderAndTitleBlock = true;   // true to show sheet references
    m_supportsAutoSave = true;
    m_syncingPcbToSchSelection = false;
    m_aboutTitle = _HKI( "KiCad Schematic Editor" );
    m_show_search = false;
 
    m_findReplaceDialog = nullptr;
 
    m_findReplaceData = std::make_unique<SCH_SEARCH_DATA>();
 
    // Give an icon
    wxIcon icon;
    wxIconBundle icon_bundle;
 
    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_eeschema, 48 ) );
    icon_bundle.AddIcon( icon );
    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_eeschema, 128 ) );
    icon_bundle.AddIcon( icon );
    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_eeschema, 256 ) );
    icon_bundle.AddIcon( icon );
    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_eeschema_32 ) );
    icon_bundle.AddIcon( icon );
    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_eeschema_16 ) );
    icon_bundle.AddIcon( icon );
 
    SetIcons( icon_bundle );
 
    LoadSettings( eeconfig() );
 
    // NB: also links the schematic to the loaded project
    CreateScreens();
 
    SCH_SHEET_PATH root;
    root.push_back( &Schematic().Root() );
    SetCurrentSheet( root );
 
    setupTools();
    setupUIConditions();
    ReCreateMenuBar();
    ReCreateHToolbar();
    ReCreateVToolbar();
    ReCreateOptToolbar();
 
#ifdef KICAD_IPC_API
    wxTheApp->Bind( EDA_EVT_PLUGIN_AVAILABILITY_CHANGED,
                    &SCH_EDIT_FRAME::onPluginAvailabilityChanged, this );
#endif
 
    m_hierarchy = new HIERARCHY_PANE( this );
 
    // Initialize common print setup dialog settings.
    m_pageSetupData.GetPrintData().SetPrintMode( wxPRINT_MODE_PRINTER );
    m_pageSetupData.GetPrintData().SetQuality( wxPRINT_QUALITY_MEDIUM );
    m_pageSetupData.GetPrintData().SetBin( wxPRINTBIN_AUTO );
    m_pageSetupData.GetPrintData().SetNoCopies( 1 );
 
    m_searchPane = new SCH_SEARCH_PANE( this );
    m_propertiesPanel = new SCH_PROPERTIES_PANEL( this, this );
 
    m_propertiesPanel->SetSplitterProportion( eeconfig()->m_AuiPanels.properties_splitter );
 
    m_selectionFilterPanel = new PANEL_SCH_SELECTION_FILTER( this );
    m_designBlocksPane = new DESIGN_BLOCK_PANE( this, nullptr, m_designBlockHistoryList );
 
    m_auimgr.SetManagedWindow( this );
 
    CreateInfoBar();
 
    // Rows; layers 4 - 6
    m_auimgr.AddPane( m_mainToolBar, EDA_PANE().HToolbar().Name( wxS( "MainToolbar" ) )
                      .Top().Layer( 6 ) );
 
    m_auimgr.AddPane( m_messagePanel, EDA_PANE().Messages().Name( wxS( "MsgPanel" ) )
                      .Bottom().Layer( 6 ) );
 
    // Columns; layers 1 - 3
    m_auimgr.AddPane( m_hierarchy, EDA_PANE().Palette().Name( SchematicHierarchyPaneName() )
                      .Caption( _( "Schematic Hierarchy" ) )
                      .Left().Layer( 3 ).Position( 1 )
                      .TopDockable( false )
                      .BottomDockable( false )
                      .CloseButton( true )
                      .MinSize( FromDIP( wxSize( 120, 60 ) ) )
                      .BestSize( FromDIP( wxSize( 200, 200 ) ) )
                      .FloatingSize( FromDIP( wxSize( 200, 200 ) ) )
                      .FloatingPosition( FromDIP( wxPoint( 50, 50 ) ) )
                      .Show( false ) );
 
    m_auimgr.AddPane( m_propertiesPanel, defaultPropertiesPaneInfo( this ) );
    m_auimgr.AddPane( m_selectionFilterPanel, defaultSchSelectionFilterPaneInfo( this ) );
 
    m_auimgr.AddPane( m_designBlocksPane, defaultDesignBlocksPaneInfo( this ) );
 
    m_auimgr.AddPane( createHighlightedNetNavigator(), defaultNetNavigatorPaneInfo() );
 
    m_auimgr.AddPane( m_optionsToolBar, EDA_PANE().VToolbar().Name( wxS( "OptToolbar" ) )
                      .Left().Layer( 2 ) );
 
    m_auimgr.AddPane( m_drawToolBar, EDA_PANE().VToolbar().Name( wxS( "ToolsToolbar" ) )
                      .Right().Layer( 2 ) );
 
    // Center
    m_auimgr.AddPane( GetCanvas(), EDA_PANE().Canvas().Name( wxS( "DrawFrame" ) )
                      .Center() );
 
    m_auimgr.AddPane( m_searchPane, EDA_PANE()
                      .Name( SearchPaneName() )
                      .Bottom()
                      .Caption( _( "Search" ) )
                      .PaneBorder( false )
                      .MinSize( FromDIP( wxSize( 180, 60 ) ) )
                      .BestSize( FromDIP( wxSize( 180, 100 ) ) )
                      .FloatingSize( FromDIP( wxSize( 480, 200 ) ) )
                      .CloseButton( true )
                      .DestroyOnClose( false )
                      .Show( m_show_search ) );
 
    FinishAUIInitialization();
 
    resolveCanvasType();
    SwitchCanvas( m_canvasType );
 
    GetCanvas()->GetGAL()->SetAxesEnabled( false );
 
    KIGFX::SCH_VIEW* view = GetCanvas()->GetView();
    static_cast<KIGFX::SCH_PAINTER*>( view->GetPainter() )->SetSchematic( m_schematic );
 
    wxAuiPaneInfo& hierarchy_pane = m_auimgr.GetPane( SchematicHierarchyPaneName() );
    wxAuiPaneInfo& netNavigatorPane = m_auimgr.GetPane( NetNavigatorPaneName() );
    wxAuiPaneInfo& propertiesPane = m_auimgr.GetPane( PropertiesPaneName() );
    wxAuiPaneInfo& selectionFilterPane = m_auimgr.GetPane( wxS( "SelectionFilter" ) );
    wxAuiPaneInfo& designBlocksPane = m_auimgr.GetPane( DesignBlocksPaneName() );
    EESCHEMA_SETTINGS* cfg = eeconfig();
 
    hierarchy_pane.Show( cfg->m_AuiPanels.show_schematic_hierarchy );
    netNavigatorPane.Show( cfg->m_AuiPanels.show_net_nav_panel );
    propertiesPane.Show( cfg->m_AuiPanels.show_properties );
    designBlocksPane.Show( cfg->m_AuiPanels.design_blocks_show );
    updateSelectionFilterVisbility();
 
    // The selection filter doesn't need to grow in the vertical direction when docked
    selectionFilterPane.dock_proportion = 0;
 
    if( cfg->m_AuiPanels.hierarchy_panel_float_width > 0
            && cfg->m_AuiPanels.hierarchy_panel_float_height > 0 )
    {
        // Show at end, after positioning
        hierarchy_pane.FloatingSize( cfg->m_AuiPanels.hierarchy_panel_float_width,
                                     cfg->m_AuiPanels.hierarchy_panel_float_height );
    }
 
    if( cfg->m_AuiPanels.net_nav_panel_float_size.GetWidth() > 0
      && cfg->m_AuiPanels.net_nav_panel_float_size.GetHeight() > 0 )
    {
        netNavigatorPane.FloatingSize( cfg->m_AuiPanels.net_nav_panel_float_size );
        netNavigatorPane.FloatingPosition( cfg->m_AuiPanels.net_nav_panel_float_pos );
    }
 
    if( cfg->m_AuiPanels.properties_panel_width > 0 )
        SetAuiPaneSize( m_auimgr, propertiesPane, cfg->m_AuiPanels.properties_panel_width, -1 );
 
    if( cfg->m_AuiPanels.schematic_hierarchy_float )
        hierarchy_pane.Float();
 
    if( cfg->m_AuiPanels.search_panel_height > 0
        && ( cfg->m_AuiPanels.search_panel_dock_direction == wxAUI_DOCK_TOP
            || cfg->m_AuiPanels.search_panel_dock_direction == wxAUI_DOCK_BOTTOM ) )
    {
        wxAuiPaneInfo& searchPane = m_auimgr.GetPane( SearchPaneName() );
        searchPane.Direction( cfg->m_AuiPanels.search_panel_dock_direction );
        SetAuiPaneSize( m_auimgr, searchPane, -1, cfg->m_AuiPanels.search_panel_height );
    }
 
    else if( cfg->m_AuiPanels.search_panel_width > 0
            && ( cfg->m_AuiPanels.search_panel_dock_direction == wxAUI_DOCK_LEFT
                || cfg->m_AuiPanels.search_panel_dock_direction == wxAUI_DOCK_RIGHT ) )
    {
        wxAuiPaneInfo& searchPane = m_auimgr.GetPane( SearchPaneName() );
        searchPane.Direction( cfg->m_AuiPanels.search_panel_dock_direction );
        SetAuiPaneSize( m_auimgr, searchPane, cfg->m_AuiPanels.search_panel_width, -1 );
    }
 
    if( cfg->m_AuiPanels.float_net_nav_panel )
        netNavigatorPane.Float();
 
    if( cfg->m_AuiPanels.design_blocks_show )
        SetAuiPaneSize( m_auimgr, designBlocksPane,
                        cfg->m_AuiPanels.design_blocks_panel_docked_width, -1 );
 
    if( cfg->m_AuiPanels.hierarchy_panel_docked_width > 0 )
    {
        // If the net navigator is not show, let the hierarchy navigator take all of the vertical
        // space.
        if( !cfg->m_AuiPanels.show_net_nav_panel )
        {
            SetAuiPaneSize( m_auimgr, hierarchy_pane,
                            cfg->m_AuiPanels.hierarchy_panel_docked_width, -1 );
        }
        else
        {
            SetAuiPaneSize( m_auimgr, hierarchy_pane,
                            cfg->m_AuiPanels.hierarchy_panel_docked_width,
                            cfg->m_AuiPanels.hierarchy_panel_docked_height );
 
            SetAuiPaneSize( m_auimgr, netNavigatorPane,
                            cfg->m_AuiPanels.net_nav_panel_docked_size.GetWidth(),
                            cfg->m_AuiPanels.net_nav_panel_docked_size.GetHeight() );
        }
 
        // wxAUI hack: force width by setting MinSize() and then Fixed()
        // thanks to ZenJu https://github.com/wxWidgets/wxWidgets/issues/13180
        hierarchy_pane.MinSize( cfg->m_AuiPanels.hierarchy_panel_docked_width, 60 );
        hierarchy_pane.Fixed();
        netNavigatorPane.MinSize( cfg->m_AuiPanels.net_nav_panel_docked_size.GetWidth(), 60 );
        netNavigatorPane.Fixed();
        m_auimgr.Update();
 
        // now make it resizable again
        hierarchy_pane.Resizable();
        netNavigatorPane.Resizable();
        m_auimgr.Update();
 
        // Note: DO NOT call m_auimgr.Update() anywhere after this; it will nuke the size
        // back to minimum.
        hierarchy_pane.MinSize( FromDIP( wxSize( 120, 60 ) ) );
        netNavigatorPane.MinSize( FromDIP( wxSize( 120, 60 ) ) );
    }
    else
    {
        m_auimgr.Update();
    }
 
    LoadProjectSettings();
    LoadDrawingSheet();
 
    view->SetLayerVisible( LAYER_ERC_ERR, cfg->m_Appearance.show_erc_errors );
    view->SetLayerVisible( LAYER_ERC_WARN, cfg->m_Appearance.show_erc_warnings );
    view->SetLayerVisible( LAYER_ERC_EXCLUSION, cfg->m_Appearance.show_erc_exclusions );
    view->SetLayerVisible( LAYER_OP_VOLTAGES, cfg->m_Appearance.show_op_voltages );
    view->SetLayerVisible( LAYER_OP_CURRENTS, cfg->m_Appearance.show_op_currents );
 
    initScreenZoom();
 
    m_hierarchy->Bind( wxEVT_SIZE, &SCH_EDIT_FRAME::OnResizeHierarchyNavigator, this );
    m_netNavigator->Bind( wxEVT_TREE_SEL_CHANGING, &SCH_EDIT_FRAME::onNetNavigatorSelChanging,
                          this );
    m_netNavigator->Bind( wxEVT_TREE_SEL_CHANGED, &SCH_EDIT_FRAME::onNetNavigatorSelection, this );
    m_netNavigator->Bind( wxEVT_SIZE, &SCH_EDIT_FRAME::onResizeNetNavigator, this );
 
    // This is used temporarily to fix a client size issue on GTK that causes zoom to fit
    // to calculate the wrong zoom size.  See SCH_EDIT_FRAME::onSize().
    Bind( wxEVT_SIZE, &SCH_EDIT_FRAME::onSize, this );
 
    setupUnits( eeconfig() );
 
    // Net list generator
    DefaultExecFlags();
 
    updateTitle();
    m_toolManager->GetTool<SCH_NAVIGATE_TOOL>()->ResetHistory();
 
#ifdef KICAD_IPC_API
    m_apiHandler = std::make_unique<API_HANDLER_SCH>( this );
    Pgm().GetApiServer().RegisterHandler( m_apiHandler.get() );
#endif
 
    // Default shutdown reason until a file is loaded
    KIPLATFORM::APP::SetShutdownBlockReason( this, _( "New schematic file is unsaved" ) );
 
    // Init for dropping files
    m_acceptedExts.emplace( FILEEXT::KiCadSchematicFileExtension, &EE_ACTIONS::ddAppendFile );
    DragAcceptFiles( true );
 
    // Ensure the window is on top
    Raise();
 
    // Now that all sizes are fixed, set the initial hierarchy_pane floating position to the
    // top-left corner of the canvas
    wxPoint canvas_pos = GetCanvas()->GetScreenPosition();
    hierarchy_pane.FloatingPosition( canvas_pos.x + 10, canvas_pos.y + 10 );
 
    Bind( EDA_EVT_CLOSE_DIALOG_BOOK_REPORTER, &SCH_EDIT_FRAME::onCloseSymbolDiffDialog, this );
    Bind( EDA_EVT_CLOSE_ERC_DIALOG, &SCH_EDIT_FRAME::onCloseErcDialog, this );
    Bind( EDA_EVT_CLOSE_DIALOG_SYMBOL_FIELDS_TABLE, &SCH_EDIT_FRAME::onCloseSymbolFieldsTableDialog,
          this );
}
 
 
SCH_EDIT_FRAME::~SCH_EDIT_FRAME()
{
    m_hierarchy->Unbind( wxEVT_SIZE, &SCH_EDIT_FRAME::OnResizeHierarchyNavigator, this );
 
    // Ensure m_canvasType is up to date, to save it in config
    m_canvasType = GetCanvas()->GetBackend();
 
    SetScreen( nullptr );
 
    if( m_schematic )
        m_schematic->RemoveAllListeners();
 
    // Delete all items not in draw list before deleting schematic
    // to avoid dangling pointers stored in these items
    ClearUndoRedoList();
    ClearRepeatItemsList();
 
    delete m_schematic;
    m_schematic = nullptr;
 
    // Close the project if we are standalone, so it gets cleaned up properly
    if( Kiface().IsSingle() )
    {
        try
        {
            GetSettingsManager()->UnloadProject( &Prj(), false );
        }
        catch( const nlohmann::detail::type_error& e )
        {
            wxFAIL_MSG( wxString::Format( wxT( "Settings exception occurred: %s" ), e.what() ) );
        }
    }
 
    delete m_hierarchy;
    delete m_selectionFilterPanel;
}
 
 
void SCH_EDIT_FRAME::OnResizeHierarchyNavigator( wxSizeEvent& aEvent )
{
    aEvent.Skip();
 
     // 1st Call: Handle the size update during the first resize event.
    CaptureHierarchyPaneSize();
 
    // Defer the second size capture
    CallAfter([this]() {
        CaptureHierarchyPaneSize();
    });
}
 
 
void SCH_EDIT_FRAME::CaptureHierarchyPaneSize()
{
    // Called when resizing the Hierarchy Navigator panel
    // Store the current pane size
    // It allows to retrieve the last defined pane size when switching between
    // docked and floating pane state
    // Note: *DO NOT* call m_auimgr.Update() here: it crashes KiCad at least on Windows
 
    EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() );
    wxAuiPaneInfo&     hierarchy_pane = m_auimgr.GetPane( SchematicHierarchyPaneName() );
 
    if( cfg && m_hierarchy->IsShownOnScreen() )
    {
        cfg->m_AuiPanels.hierarchy_panel_float_width  = hierarchy_pane.floating_size.x;
        cfg->m_AuiPanels.hierarchy_panel_float_height = hierarchy_pane.floating_size.y;
 
        // initialize hierarchy_panel_docked_width and best size only if the hierarchy_pane
        // width is > 0 (i.e. if its size is already set and has meaning)
        // if it is floating, its size is not initialized (only floating_size is initialized)
        // initializing hierarchy_pane.best_size is useful when switching to float pane and
        // after switching to the docked pane, to retrieve the last docked pane width
        if( hierarchy_pane.rect.width > 50 )    // 50 is a good margin
        {
            cfg->m_AuiPanels.hierarchy_panel_docked_width = hierarchy_pane.rect.width;
            hierarchy_pane.best_size.x = hierarchy_pane.rect.width;
        }
    }
}
 
 
void SCH_EDIT_FRAME::setupTools()
{
    // Create the manager and dispatcher & route draw panel events to the dispatcher
    m_toolManager = new TOOL_MANAGER;
    m_toolManager->SetEnvironment( &Schematic(), GetCanvas()->GetView(),
                                   GetCanvas()->GetViewControls(), config(), this );
    m_actions = new EE_ACTIONS();
    m_toolDispatcher = new TOOL_DISPATCHER( m_toolManager );
 
    // Register tools
    m_toolManager->RegisterTool( new COMMON_CONTROL );
    m_toolManager->RegisterTool( new COMMON_TOOLS );
    m_toolManager->RegisterTool( new ZOOM_TOOL );
    m_toolManager->RegisterTool( new EE_SELECTION_TOOL );
    m_toolManager->RegisterTool( new PICKER_TOOL );
    m_toolManager->RegisterTool( new SCH_DRAWING_TOOLS );
    m_toolManager->RegisterTool( new SCH_LINE_WIRE_BUS_TOOL );
    m_toolManager->RegisterTool( new SCH_MOVE_TOOL );
    m_toolManager->RegisterTool( new SCH_EDIT_TOOL );
    m_toolManager->RegisterTool( new SCH_EDIT_TABLE_TOOL );
    m_toolManager->RegisterTool( new EE_INSPECTION_TOOL );
    m_toolManager->RegisterTool( new SCH_DESIGN_BLOCK_CONTROL );
    m_toolManager->RegisterTool( new SCH_EDITOR_CONTROL );
    m_toolManager->RegisterTool( new SCH_FIND_REPLACE_TOOL );
    m_toolManager->RegisterTool( new EE_POINT_EDITOR );
    m_toolManager->RegisterTool( new SCH_NAVIGATE_TOOL );
    m_toolManager->RegisterTool( new PROPERTIES_TOOL );
    m_toolManager->RegisterTool( new EMBED_TOOL );
    m_toolManager->InitTools();
 
    // Run the selection tool, it is supposed to be always active
    m_toolManager->PostAction( EE_ACTIONS::selectionActivate );
 
    GetCanvas()->SetEventDispatcher( m_toolDispatcher );
}
 
 
void SCH_EDIT_FRAME::setupUIConditions()
{
    SCH_BASE_FRAME::setupUIConditions();
 
    ACTION_MANAGER*       mgr = m_toolManager->GetActionManager();
    SCH_EDITOR_CONDITIONS cond( this );
 
    wxASSERT( mgr );
 
    auto hasElements =
            [ this ] ( const SELECTION& aSel )
            {
                return GetScreen() &&
                        ( !GetScreen()->Items().empty() || !SELECTION_CONDITIONS::Idle( aSel ) );
            };
 
    auto searchPaneCond =
            [this] ( const SELECTION& )
            {
                return m_auimgr.GetPane( SearchPaneName() ).IsShown();
            };
 
    auto propertiesCond =
            [this] ( const SELECTION& )
            {
                return m_auimgr.GetPane( PropertiesPaneName() ).IsShown();
            };
 
    auto hierarchyNavigatorCond =
            [ this ] ( const SELECTION& aSel )
            {
                return m_auimgr.GetPane( SchematicHierarchyPaneName() ).IsShown();
            };
 
    auto netNavigatorCond =
            [ this ] (const SELECTION& aSel )
            {
                return m_auimgr.GetPane( NetNavigatorPaneName() ).IsShown();
            };
 
    auto designBlockCond =
            [ this ] (const SELECTION& aSel )
            {
                return m_auimgr.GetPane( DesignBlocksPaneName() ).IsShown();
            };
 
    auto undoCond =
            [ this ] (const SELECTION& aSel )
            {
                if( SCH_LINE_WIRE_BUS_TOOL::IsDrawingLineWireOrBus( aSel ) )
                    return true;
 
                return GetUndoCommandCount() > 0;
            };
 
#define ENABLE( x ) ACTION_CONDITIONS().Enable( x )
#define CHECK( x )  ACTION_CONDITIONS().Check( x )
 
    mgr->SetConditions( ACTIONS::save,                ENABLE( SELECTION_CONDITIONS::ShowAlways ) );
    mgr->SetConditions( ACTIONS::undo,                ENABLE( undoCond ) );
    mgr->SetConditions( ACTIONS::redo,                ENABLE( cond.RedoAvailable() ) );
 
    mgr->SetConditions( EE_ACTIONS::showSearch,       CHECK( searchPaneCond ) );
    mgr->SetConditions( EE_ACTIONS::showHierarchy,    CHECK( hierarchyNavigatorCond ) );
    mgr->SetConditions( EE_ACTIONS::showNetNavigator, CHECK( netNavigatorCond ) );
    mgr->SetConditions( ACTIONS::showProperties,      CHECK( propertiesCond ) );
    mgr->SetConditions( EE_ACTIONS::showDesignBlockPanel,     CHECK( designBlockCond ) );
    mgr->SetConditions( ACTIONS::toggleGrid,          CHECK( cond.GridVisible() ) );
    mgr->SetConditions( ACTIONS::toggleGridOverrides, CHECK( cond.GridOverrides() ) );
    mgr->SetConditions( ACTIONS::toggleCursorStyle,   CHECK( cond.FullscreenCursor() ) );
    mgr->SetConditions( ACTIONS::millimetersUnits,
                        CHECK( cond.Units( EDA_UNITS::MILLIMETRES ) ) );
    mgr->SetConditions( ACTIONS::inchesUnits,         CHECK( cond.Units( EDA_UNITS::INCHES ) ) );
    mgr->SetConditions( ACTIONS::milsUnits,           CHECK( cond.Units( EDA_UNITS::MILS ) ) );
 
    mgr->SetConditions( EE_ACTIONS::lineModeFree,
                        CHECK( cond.LineMode( LINE_MODE::LINE_MODE_FREE ) ) );
    mgr->SetConditions( EE_ACTIONS::lineMode90,
                        CHECK( cond.LineMode( LINE_MODE::LINE_MODE_90 ) ) );
    mgr->SetConditions( EE_ACTIONS::lineMode45,
                        CHECK( cond.LineMode( LINE_MODE::LINE_MODE_45 ) ) );
 
    mgr->SetConditions( ACTIONS::cut,                 ENABLE( hasElements ) );
    mgr->SetConditions( ACTIONS::copy,                ENABLE( hasElements ) );
    mgr->SetConditions( ACTIONS::copyAsText,          ENABLE( hasElements ) );
    mgr->SetConditions( ACTIONS::paste,               ENABLE( SELECTION_CONDITIONS::Idle && cond.NoActiveTool() ) );
    mgr->SetConditions( ACTIONS::pasteSpecial,        ENABLE( SELECTION_CONDITIONS::Idle && cond.NoActiveTool() ) );
    mgr->SetConditions( ACTIONS::doDelete,            ENABLE( hasElements ) );
    mgr->SetConditions( ACTIONS::duplicate,           ENABLE( hasElements ) );
    mgr->SetConditions( ACTIONS::selectAll,           ENABLE( hasElements ) );
    mgr->SetConditions( ACTIONS::unselectAll,         ENABLE( hasElements ) );
 
    mgr->SetConditions( EE_ACTIONS::rotateCW,         ENABLE( hasElements ) );
    mgr->SetConditions( EE_ACTIONS::rotateCCW,        ENABLE( hasElements ) );
    mgr->SetConditions( EE_ACTIONS::mirrorH,          ENABLE( hasElements ) );
    mgr->SetConditions( EE_ACTIONS::mirrorV,          ENABLE( hasElements ) );
 
    mgr->SetConditions( ACTIONS::zoomTool,
                        CHECK( cond.CurrentTool( ACTIONS::zoomTool ) ) );
    mgr->SetConditions( ACTIONS::selectionTool,
                        CHECK( cond.CurrentTool( ACTIONS::selectionTool ) ) );
 
    auto showHiddenPinsCond =
            [this]( const SELECTION& )
            {
                return GetShowAllPins();
            };
 
    auto showHiddenFieldsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_hidden_fields;
            };
 
    auto showDirectiveLabelsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_directive_labels;
            };
 
    auto showERCErrorsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_erc_errors;
            };
 
    auto showERCWarningsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_erc_warnings;
            };
 
    auto showERCExclusionsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_erc_exclusions;
            };
 
    auto markSimExclusionsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.mark_sim_exclusions;
            };
 
    auto showOPVoltagesCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_op_voltages;
            };
 
    auto showOPCurrentsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_op_currents;
            };
 
    auto showPinAltModeIconsCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_Appearance.show_pin_alt_icons;
            };
 
    auto showAnnotateAutomaticallyCond =
            [this]( const SELECTION& )
            {
                EESCHEMA_SETTINGS* cfg = eeconfig();
                return cfg && cfg->m_AnnotatePanel.automatic;
            };
 
    auto remapSymbolsCondition =
            [&]( const SELECTION& aSel )
            {
                SCH_SCREENS schematic( Schematic().Root() );
 
                // The remapping can only be performed on legacy projects.
                return schematic.HasNoFullyDefinedLibIds();
            };
 
    auto belowRootSheetCondition =
            [this]( const SELECTION& aSel )
            {
                SCH_NAVIGATE_TOOL* navigateTool = m_toolManager->GetTool<SCH_NAVIGATE_TOOL>();
                return navigateTool && navigateTool->CanGoUp();
            };
 
    mgr->SetConditions( EE_ACTIONS::leaveSheet,            ENABLE( belowRootSheetCondition ) );
 
    /* Some of these are bound by default to arrow keys which will get a different action if we
     * disable the buttons.  So always leave them enabled so the action is consistent.
     * https://gitlab.com/kicad/code/kicad/-/issues/14783
    mgr->SetConditions( EE_ACTIONS::navigateUp,            ENABLE( belowRootSheetCondition ) );
    mgr->SetConditions( EE_ACTIONS::navigateForward,       ENABLE( navHistoryHasForward ) );
    mgr->SetConditions( EE_ACTIONS::navigateBack,          ENABLE( navHistoryHsBackward ) );
     */
 
    mgr->SetConditions( EE_ACTIONS::remapSymbols,          ENABLE( remapSymbolsCondition ) );
    mgr->SetConditions( EE_ACTIONS::toggleHiddenPins,      CHECK( showHiddenPinsCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleHiddenFields,    CHECK( showHiddenFieldsCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleDirectiveLabels, CHECK( showDirectiveLabelsCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleERCErrors,       CHECK( showERCErrorsCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleERCWarnings,     CHECK( showERCWarningsCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleERCExclusions,   CHECK( showERCExclusionsCond ) );
    mgr->SetConditions( EE_ACTIONS::markSimExclusions,     CHECK( markSimExclusionsCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleOPVoltages,      CHECK( showOPVoltagesCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleOPCurrents,      CHECK( showOPCurrentsCond ) );
    mgr->SetConditions( EE_ACTIONS::togglePinAltIcons,     CHECK( showPinAltModeIconsCond ) );
    mgr->SetConditions( EE_ACTIONS::toggleAnnotateAuto,    CHECK( showAnnotateAutomaticallyCond ) );
    mgr->SetConditions( ACTIONS::toggleBoundingBoxes,      CHECK( cond.BoundingBoxes() ) );
 
    mgr->SetConditions( EE_ACTIONS::saveSheetAsDesignBlock,     ENABLE( hasElements ) );
    mgr->SetConditions( EE_ACTIONS::saveSelectionAsDesignBlock, ENABLE( SELECTION_CONDITIONS::NotEmpty ) );
 
#define CURRENT_TOOL( action ) mgr->SetConditions( action, CHECK( cond.CurrentTool( action ) ) )
 
    CURRENT_TOOL( ACTIONS::deleteTool );
    CURRENT_TOOL( EE_ACTIONS::highlightNetTool );
    CURRENT_TOOL( EE_ACTIONS::placeSymbol );
    CURRENT_TOOL( EE_ACTIONS::placePower );
    CURRENT_TOOL( EE_ACTIONS::placeDesignBlock );
    CURRENT_TOOL( EE_ACTIONS::drawWire );
    CURRENT_TOOL( EE_ACTIONS::drawBus );
    CURRENT_TOOL( EE_ACTIONS::placeBusWireEntry );
    CURRENT_TOOL( EE_ACTIONS::placeNoConnect );
    CURRENT_TOOL( EE_ACTIONS::placeJunction );
    CURRENT_TOOL( EE_ACTIONS::placeLabel );
    CURRENT_TOOL( EE_ACTIONS::placeClassLabel );
    CURRENT_TOOL( EE_ACTIONS::placeGlobalLabel );
    CURRENT_TOOL( EE_ACTIONS::placeHierLabel );
    CURRENT_TOOL( EE_ACTIONS::drawRuleArea );
    CURRENT_TOOL( EE_ACTIONS::drawSheet );
    CURRENT_TOOL( EE_ACTIONS::placeSheetPin );
    CURRENT_TOOL( EE_ACTIONS::syncSheetPins );
    CURRENT_TOOL( EE_ACTIONS::drawSheetFromFile );
    CURRENT_TOOL( EE_ACTIONS::drawSheetFromDesignBlock );
    CURRENT_TOOL( EE_ACTIONS::drawRectangle );
    CURRENT_TOOL( EE_ACTIONS::drawCircle );
    CURRENT_TOOL( EE_ACTIONS::drawArc );
    CURRENT_TOOL( EE_ACTIONS::drawBezier );
    CURRENT_TOOL( EE_ACTIONS::drawLines );
    CURRENT_TOOL( EE_ACTIONS::placeSchematicText );
    CURRENT_TOOL( EE_ACTIONS::drawTextBox );
    CURRENT_TOOL( EE_ACTIONS::drawTable );
    CURRENT_TOOL( EE_ACTIONS::placeImage );
 
#undef CURRENT_TOOL
#undef CHECK
#undef ENABLE
}
 
 
void SCH_EDIT_FRAME::SaveCopyForRepeatItem( const SCH_ITEM* aItem )
{
    // we cannot store a pointer to an item in the display list here since
    // that item may be deleted, such as part of a line concatenation or other.
    // So simply always keep a copy of the object which is to be repeated.
 
    if( aItem )
    {
        m_items_to_repeat.clear();
 
        AddCopyForRepeatItem( aItem );
    }
}
 
 
void SCH_EDIT_FRAME::AddCopyForRepeatItem( const SCH_ITEM* aItem )
{
    // we cannot store a pointer to an item in the display list here since
    // that item may be deleted, such as part of a line concatenation or other.
    // So simply always keep a copy of the object which is to be repeated.
 
    if( aItem )
    {
        std::unique_ptr<SCH_ITEM> repeatItem( static_cast<SCH_ITEM*>( aItem->Duplicate() ) );
 
        // Clone() preserves the flags & parent, we want 'em cleared.
        repeatItem->ClearFlags();
        repeatItem->SetParent( nullptr );
 
        m_items_to_repeat.emplace_back( std::move( repeatItem ) );
    }
}
 
 
EDA_ITEM* SCH_EDIT_FRAME::GetItem( const KIID& aId ) const
{
    return Schematic().GetItem( aId );
}
 
 
void SCH_EDIT_FRAME::SetSheetNumberAndCount()
{
    Schematic().SetSheetNumberAndCount();
}
 
 
SCH_SCREEN* SCH_EDIT_FRAME::GetScreen() const
{
    return GetCurrentSheet().LastScreen();
}
 
 
SCHEMATIC& SCH_EDIT_FRAME::Schematic() const
{
    return *m_schematic;
}
 
 
wxString SCH_EDIT_FRAME::GetScreenDesc() const
{
    return GetCurrentSheet().Last()->GetName();
}
 
 
wxString SCH_EDIT_FRAME::GetFullScreenDesc() const
{
    return GetCurrentSheet().PathHumanReadable();
}
 
 
void SCH_EDIT_FRAME::CreateScreens()
{
    m_schematic->Reset();
    m_schematic->SetProject( &Prj() );
 
    SCH_SHEET* rootSheet = new SCH_SHEET( m_schematic );
    m_schematic->SetRoot( rootSheet );
 
    SCH_SCREEN* rootScreen = new SCH_SCREEN( m_schematic );
    const_cast<KIID&>( rootSheet->m_Uuid ) = rootScreen->GetUuid();
    m_schematic->Root().SetScreen( rootScreen );
    SetScreen( Schematic().RootScreen() );
 
 
    m_schematic->RootScreen()->SetFileName( wxEmptyString );
 
    // Don't leave root page number empty
    SCH_SHEET_PATH rootSheetPath;
 
    rootSheetPath.push_back( rootSheet );
    m_schematic->RootScreen()->SetPageNumber( wxT( "1" ) );
    rootSheetPath.SetPageNumber( wxT( "1" ) );
 
    // Rehash sheetpaths in heirarchy since we changed the uuid.
    m_schematic->RefreshHierarchy();
 
    if( GetScreen() == nullptr )
    {
        SCH_SCREEN* screen = new SCH_SCREEN( m_schematic );
        SetScreen( screen );
    }
}
 
 
SCH_SHEET_PATH& SCH_EDIT_FRAME::GetCurrentSheet() const
{
    return m_schematic->CurrentSheet();
}
 
 
void SCH_EDIT_FRAME::SetCurrentSheet( const SCH_SHEET_PATH& aSheet )
{
    if( aSheet != GetCurrentSheet() )
    {
        FocusOnItem( nullptr );
 
        Schematic().SetCurrentSheet( aSheet );
        GetCanvas()->DisplaySheet( aSheet.LastScreen() );
    }
}
 
 
void SCH_EDIT_FRAME::HardRedraw()
{
    SCH_SCREEN* screen = GetCurrentSheet().LastScreen();
 
    for( SCH_ITEM* item : screen->Items() )
        item->ClearCaches();
 
    for( const std::pair<const wxString, LIB_SYMBOL*>& libSymbol : screen->GetLibSymbols() )
    {
        wxCHECK2( libSymbol.second, continue );
        libSymbol.second->ClearCaches();
    }
 
    if( Schematic().Settings().m_IntersheetRefsShow )
        RecomputeIntersheetRefs();
 
    FocusOnItem( nullptr );
 
    GetCanvas()->DisplaySheet( GetCurrentSheet().LastScreen() );
 
    if( EE_SELECTION_TOOL* selectionTool = m_toolManager->GetTool<EE_SELECTION_TOOL>() )
        selectionTool->Reset( TOOL_BASE::REDRAW );
 
    GetCanvas()->ForceRefresh();
}
 
 
bool SCH_EDIT_FRAME::canCloseWindow( wxCloseEvent& aEvent )
{
    // Exit interactive editing
    // Note this this will commit *some* pending changes.  For instance, the EE_POINT_EDITOR
    // will cancel any drag currently in progress, but commit all changes from previous drags.
    if( m_toolManager )
        m_toolManager->RunAction( ACTIONS::cancelInteractive );
 
    // Shutdown blocks must be determined and vetoed as early as possible
    if( KIPLATFORM::APP::SupportsShutdownBlockReason() && aEvent.GetId() == wxEVT_QUERY_END_SESSION
            && IsContentModified() )
    {
        return false;
    }
 
    if( Kiface().IsSingle() )
    {
        auto* symbolEditor = (SYMBOL_EDIT_FRAME*) Kiway().Player( FRAME_SCH_SYMBOL_EDITOR, false );
 
        if( symbolEditor && !symbolEditor->Close() )   // Can close symbol editor?
            return false;
 
        auto* symbolViewer = (SYMBOL_VIEWER_FRAME*) Kiway().Player( FRAME_SCH_VIEWER, false );
 
        if( symbolViewer && !symbolViewer->Close() )   // Can close symbol viewer?
            return false;
 
        // SYMBOL_CHOOSER_FRAME is always modal so this shouldn't come up, but better safe than
        // sorry.
        auto* chooser = (SYMBOL_CHOOSER_FRAME*) Kiway().Player( FRAME_SYMBOL_CHOOSER, false );
 
        if( chooser && !chooser->Close() )   // Can close symbol chooser?
            return false;
    }
    else
    {
        auto* symbolEditor = (SYMBOL_EDIT_FRAME*) Kiway().Player( FRAME_SCH_SYMBOL_EDITOR, false );
 
        if( symbolEditor && symbolEditor->IsSymbolFromSchematic() )
        {
            if( !symbolEditor->CanCloseSymbolFromSchematic( true ) )
                return false;
        }
    }
 
    if( !Kiway().PlayerClose( FRAME_SIMULATOR, false ) )   // Can close the simulator?
        return false;
 
    if( m_symbolFieldsTableDialog
        && !m_symbolFieldsTableDialog->Close( false ) ) // Can close the symbol fields table?
    {
        return false;
    }
 
    // We may have gotten multiple events; don't clean up twice
    if( !Schematic().IsValid() )
        return false;
 
    if( IsContentModified() )
    {
        wxFileName fileName = Schematic().RootScreen()->GetFileName();
        wxString msg = _( "Save changes to '%s' before closing?" );
 
        if( !HandleUnsavedChanges( this, wxString::Format( msg, fileName.GetFullName() ),
                                   [&]() -> bool
                                   {
                                       return SaveProject();
                                   } ) )
        {
            return false;
        }
    }
 
    return true;
}
 
 
void SCH_EDIT_FRAME::doCloseWindow()
{
    SCH_SHEET_LIST sheetlist = Schematic().Hierarchy();
 
#ifdef KICAD_IPC_API
    Pgm().GetApiServer().DeregisterHandler( m_apiHandler.get() );
    wxTheApp->Unbind( EDA_EVT_PLUGIN_AVAILABILITY_CHANGED,
                      &SCH_EDIT_FRAME::onPluginAvailabilityChanged, this );
#endif
 
    // Shutdown all running tools
    if( m_toolManager )
        m_toolManager->ShutdownAllTools();
 
    // Close modeless dialogs.  They're trouble when they get destroyed after the frame.
    Unbind( EDA_EVT_CLOSE_DIALOG_BOOK_REPORTER, &SCH_EDIT_FRAME::onCloseSymbolDiffDialog, this );
    Unbind( EDA_EVT_CLOSE_ERC_DIALOG, &SCH_EDIT_FRAME::onCloseErcDialog, this );
    Unbind( EDA_EVT_CLOSE_DIALOG_SYMBOL_FIELDS_TABLE,
            &SCH_EDIT_FRAME::onCloseSymbolFieldsTableDialog, this );
    m_netNavigator->Unbind( wxEVT_TREE_SEL_CHANGING, &SCH_EDIT_FRAME::onNetNavigatorSelChanging,
                            this );
    m_netNavigator->Unbind( wxEVT_TREE_SEL_CHANGED, &SCH_EDIT_FRAME::onNetNavigatorSelection,
                            this );
 
    // Close the find dialog and preserve its setting if it is displayed.
    if( m_findReplaceDialog )
    {
        m_findStringHistoryList = m_findReplaceDialog->GetFindEntries();
        m_replaceStringHistoryList = m_findReplaceDialog->GetReplaceEntries();
 
        m_findReplaceDialog->Destroy();
        m_findReplaceDialog = nullptr;
    }
 
    if( m_diffSymbolDialog )
    {
        m_diffSymbolDialog->Destroy();
        m_diffSymbolDialog = nullptr;
    }
 
    if( m_ercDialog )
    {
        m_ercDialog->Destroy();
        m_ercDialog = nullptr;
    }
 
    if( m_symbolFieldsTableDialog )
    {
        m_symbolFieldsTableDialog->Destroy();
        m_symbolFieldsTableDialog = nullptr;
    }
 
    // Make sure local settings are persisted
    if( !Prj().GetLocalSettings().WasMigrated() )
        SaveProjectLocalSettings();
 
    // Shutdown all running tools
    if( m_toolManager )
    {
        m_toolManager->ShutdownAllTools();
        // prevent the canvas from trying to dispatch events during close
        GetCanvas()->SetEventDispatcher( nullptr );
        delete m_toolManager;
        m_toolManager = nullptr;
    }
 
    wxAuiPaneInfo& hierarchy_pane = m_auimgr.GetPane( SchematicHierarchyPaneName() );
 
    if( hierarchy_pane.IsShown() && hierarchy_pane.IsFloating() )
    {
        hierarchy_pane.Show( false );
        m_auimgr.Update();
    }
 
    SCH_SCREENS screens( Schematic().Root() );
    wxFileName fn;
 
    for( SCH_SCREEN* screen = screens.GetFirst(); screen != nullptr; screen = screens.GetNext() )
    {
        fn = Prj().AbsolutePath( screen->GetFileName() );
 
        // Auto save file name is the normal file name prepended with FILEEXT::AutoSaveFilePrefix.
        fn.SetName( FILEEXT::AutoSaveFilePrefix + fn.GetName() );
 
        if( fn.IsFileWritable() )
            wxRemoveFile( fn.GetFullPath() );
    }
 
    wxFileName tmpFn = Prj().GetProjectFullName();
    wxFileName autoSaveFileName( tmpFn.GetPath(), getAutoSaveFileName() );
 
    if( autoSaveFileName.IsFileWritable() )
        wxRemoveFile( autoSaveFileName.GetFullPath() );
 
    sheetlist.ClearModifyStatus();
 
    wxString fileName = Prj().AbsolutePath( Schematic().RootScreen()->GetFileName() );
 
    if( !Schematic().GetFileName().IsEmpty() && !Schematic().RootScreen()->IsEmpty() )
        UpdateFileHistory( fileName );
 
    Schematic().RootScreen()->Clear( true );
 
    // all sub sheets are deleted, only the main sheet is usable
    GetCurrentSheet().clear();
 
    // Clear view before destroying schematic as repaints depend on schematic being valid
    SetScreen( nullptr );
 
    Schematic().Reset();
 
    // Prevents any rogue events from continuing (i.e. search panel tries to redraw)
    Show( false );
 
    Destroy();
}
 
 
SEVERITY SCH_EDIT_FRAME::GetSeverity( int aErrorCode ) const
{
    return Schematic().ErcSettings().GetSeverity( aErrorCode );
}
 
 
void SCH_EDIT_FRAME::OnModify()
{
    EDA_BASE_FRAME::OnModify();
 
    if( GetScreen() )
        GetScreen()->SetContentModified();
 
    m_autoSaveRequired = true;
 
    if( GetCanvas() )
        GetCanvas()->Refresh();
 
    if( !GetTitle().StartsWith( wxS( "*" ) ) )
        updateTitle();
}
 
 
void SCH_EDIT_FRAME::OnUpdatePCB()
{
    if( Kiface().IsSingle() )
    {
        DisplayError( this,  _( "Cannot update the PCB, because the Schematic Editor is opened"
                                " in stand-alone mode. In order to create/update PCBs from"
                                " schematics, launch the KiCad shell and create a project." ) );
        return;
    }
 
    KIWAY_PLAYER* frame = Kiway().Player( FRAME_PCB_EDITOR, false );
    wxEventBlocker blocker( this );
 
    if( !frame )
    {
        wxFileName fn = Prj().GetProjectFullName();
        fn.SetExt( FILEEXT::PcbFileExtension );
 
        frame = Kiway().Player( FRAME_PCB_EDITOR, true );
 
        // If Kiway() cannot create the Pcbnew frame, it shows a error message, and
        // frame is null
        if( !frame )
            return;
 
        frame->OpenProjectFiles( std::vector<wxString>( 1, fn.GetFullPath() ) );
    }
 
    if( !frame->IsVisible() )
        frame->Show( true );
 
    // On Windows, Raise() does not bring the window on screen, when iconized
    if( frame->IsIconized() )
        frame->Iconize( false );
 
    frame->Raise();
 
    std::string payload;
    Kiway().ExpressMail( FRAME_PCB_EDITOR, MAIL_PCB_UPDATE, payload, this );
}
 
 
void SCH_EDIT_FRAME::UpdateHierarchyNavigator( bool aRefreshNetNavigator )
{
    m_toolManager->GetTool<SCH_NAVIGATE_TOOL>()->CleanHistory();
    m_hierarchy->UpdateHierarchyTree();
 
    if( aRefreshNetNavigator )
        RefreshNetNavigator();
}
 
 
void SCH_EDIT_FRAME::UpdateLabelsHierarchyNavigator()
{
    // Update only the hierarchy navigation tree labels.
    // The tree list is expectyed to be up to date
    m_hierarchy->UpdateLabelsHierarchyTree();
}
 
 
void SCH_EDIT_FRAME::UpdateHierarchySelection()
{
    m_hierarchy->UpdateHierarchySelection();
}
 
 
void SCH_EDIT_FRAME::ShowFindReplaceDialog( bool aReplace )
{
    wxString findString;
 
    EE_SELECTION& selection = m_toolManager->GetTool<EE_SELECTION_TOOL>()->GetSelection();
 
    if( selection.Size() == 1 )
    {
        EDA_ITEM* front = selection.Front();
 
        switch( front->Type() )
        {
        case SCH_SYMBOL_T:
        {
            SCH_SYMBOL* symbol = static_cast<SCH_SYMBOL*>( front );
            findString = UnescapeString( symbol->GetField( VALUE_FIELD )->GetText() );
            break;
        }
 
        case SCH_FIELD_T:
            findString = UnescapeString( static_cast<SCH_FIELD*>( front )->GetText() );
            break;
 
        case SCH_LABEL_T:
        case SCH_GLOBAL_LABEL_T:
        case SCH_HIER_LABEL_T:
        case SCH_SHEET_PIN_T:
            findString = UnescapeString( static_cast<SCH_LABEL_BASE*>( front )->GetText() );
            break;
 
        case SCH_TEXT_T:
            findString = UnescapeString( static_cast<SCH_TEXT*>( front )->GetText() );
 
            if( findString.Contains( wxT( "\n" ) ) )
                findString = findString.Before( '\n' );
 
            break;
 
        default:
            break;
        }
    }
 
    if( m_findReplaceDialog )
        m_findReplaceDialog->Destroy();
 
    m_findReplaceDialog = new DIALOG_SCH_FIND( this,
                                               static_cast<SCH_SEARCH_DATA*>( m_findReplaceData.get() ),
                                               wxDefaultPosition, wxDefaultSize,
                                               aReplace ? wxFR_REPLACEDIALOG : 0 );
 
    m_findReplaceDialog->SetFindEntries( m_findStringHistoryList, findString );
    m_findReplaceDialog->SetReplaceEntries( m_replaceStringHistoryList );
    m_findReplaceDialog->Show( true );
}
 
 
void SCH_EDIT_FRAME::ShowFindReplaceStatus( const wxString& aMsg, int aStatusTime )
{
    // Prepare the infobar, since we don't know its state
    m_infoBar->RemoveAllButtons();
    m_infoBar->AddCloseButton();
 
    m_infoBar->ShowMessageFor( aMsg, aStatusTime, wxICON_INFORMATION );
}
 
 
void SCH_EDIT_FRAME::ClearFindReplaceStatus()
{
    m_infoBar->Dismiss();
}
 
 
void SCH_EDIT_FRAME::OnFindDialogClose()
{
    m_findStringHistoryList = m_findReplaceDialog->GetFindEntries();
    m_replaceStringHistoryList = m_findReplaceDialog->GetReplaceEntries();
 
    m_findReplaceDialog->Destroy();
    m_findReplaceDialog = nullptr;
 
    m_toolManager->RunAction( ACTIONS::updateFind );
}
 
 
void SCH_EDIT_FRAME::OnLoadFile( wxCommandEvent& event )
{
    wxString fn = GetFileFromHistory( event.GetId(), _( "Schematic" ) );
 
    if( fn.size() )
        OpenProjectFiles( std::vector<wxString>( 1, fn ) );
}
 
 
void SCH_EDIT_FRAME::OnClearFileHistory( wxCommandEvent& aEvent )
{
    ClearFileHistory();
}
 
 
void SCH_EDIT_FRAME::NewProject()
{
    // Only standalone mode can directly load a new document
    if( !Kiface().IsSingle() )
        return;
 
    wxString pro_dir = m_mruPath;
 
    wxFileDialog dlg( this, _( "New Schematic" ), pro_dir, wxEmptyString,
                      FILEEXT::KiCadSchematicFileWildcard(), wxFD_SAVE );
 
    if( dlg.ShowModal() != wxID_CANCEL )
    {
        // Enforce the extension, wxFileDialog is inept.
        wxFileName create_me =
                EnsureFileExtension( dlg.GetPath(), FILEEXT::KiCadSchematicFileExtension );
 
        if( create_me.FileExists() )
        {
            wxString msg;
            msg.Printf( _( "Schematic file '%s' already exists." ), create_me.GetFullName() );
            DisplayError( this, msg );
            return ;
        }
 
        // OpenProjectFiles() requires absolute
        wxASSERT_MSG( create_me.IsAbsolute(), wxS( "wxFileDialog returned non-absolute path" ) );
 
        OpenProjectFiles( std::vector<wxString>( 1, create_me.GetFullPath() ), KICTL_CREATE );
        m_mruPath = create_me.GetPath();
    }
}
 
 
void SCH_EDIT_FRAME::LoadProject()
{
    // Only standalone mode can directly load a new document
    if( !Kiface().IsSingle() )
        return;
 
    wxString pro_dir = m_mruPath;
    wxString wildcards = FILEEXT::AllSchematicFilesWildcard()
                            + wxS( "|" ) + FILEEXT::KiCadSchematicFileWildcard()
                            + wxS( "|" ) + FILEEXT::LegacySchematicFileWildcard();
 
    wxFileDialog dlg( this, _( "Open Schematic" ), pro_dir, wxEmptyString,
                      wildcards, wxFD_OPEN | wxFD_FILE_MUST_EXIST );
 
    if( dlg.ShowModal() != wxID_CANCEL )
    {
        OpenProjectFiles( std::vector<wxString>( 1, dlg.GetPath() ) );
        m_mruPath = Prj().GetProjectPath();
    }
}
 
 
void SCH_EDIT_FRAME::OnOpenPcbnew()
{
    wxFileName kicad_board = Prj().AbsolutePath( Schematic().GetFileName() );
 
    if( kicad_board.IsOk() && !Schematic().GetFileName().IsEmpty() )
    {
        kicad_board.SetExt( FILEEXT::PcbFileExtension );
        wxFileName legacy_board( kicad_board );
        legacy_board.SetExt( FILEEXT::LegacyPcbFileExtension );
        wxFileName& boardfn = legacy_board;
 
        if( !legacy_board.FileExists() || kicad_board.FileExists() )
            boardfn = kicad_board;
 
        if( Kiface().IsSingle() )
        {
            ExecuteFile( PCBNEW_EXE, boardfn.GetFullPath() );
        }
        else
        {
            wxEventBlocker blocker(this);
            KIWAY_PLAYER* frame = Kiway().Player( FRAME_PCB_EDITOR, false );
 
            if( !frame )
            {
                frame = Kiway().Player( FRAME_PCB_EDITOR, true );
 
                // frame can be null if Cvpcb cannot be run. No need to show a warning
                // Kiway() generates the error messages
                if( !frame )
                    return;
 
                frame->OpenProjectFiles( std::vector<wxString>( 1, boardfn.GetFullPath() ) );
            }
 
            if( !frame->IsVisible() )
                frame->Show( true );
 
            // On Windows, Raise() does not bring the window on screen, when iconized
            if( frame->IsIconized() )
                frame->Iconize( false );
 
            frame->Raise();
        }
    }
    else
    {
        // If we are running inside a project, it should be impossible for this case to happen
        wxASSERT( Kiface().IsSingle() );
        ExecuteFile( PCBNEW_EXE );
    }
}
 
 
void SCH_EDIT_FRAME::OnOpenCvpcb()
{
    wxFileName fn = Prj().AbsolutePath( Schematic().GetFileName() );
    fn.SetExt( FILEEXT::NetlistFileExtension );
 
    if( !ReadyToNetlist( _( "Assigning footprints requires a fully annotated schematic." ) ) )
        return;
 
    try
    {
        KIWAY_PLAYER* player = Kiway().Player( FRAME_CVPCB, false );  // test open already.
 
        if( !player )
        {
            player = Kiway().Player( FRAME_CVPCB, true );
 
            // player can be null if Cvpcb cannot be run. No need to show a warning
            // Kiway() generates the error messages
            if( !player )
                return;
 
            player->Show( true );
        }
 
        // Ensure the netlist (mainly info about symbols) is up to date
        RecalculateConnections( nullptr, GLOBAL_CLEANUP );
        sendNetlistToCvpcb();
 
        player->Raise();
    }
    catch( const IO_ERROR& )
    {
        DisplayError( this, _( "Could not open CvPcb" ) );
    }
}
 
 
void SCH_EDIT_FRAME::OnExit( wxCommandEvent& event )
{
    if( event.GetId() == wxID_EXIT )
        Kiway().OnKiCadExit();
 
    if( event.GetId() == wxID_CLOSE || Kiface().IsSingle() )
        Close( false );
}
 
 
void SCH_EDIT_FRAME::PrintPage( const RENDER_SETTINGS* aSettings )
{
    wxString                   fileName = Prj().AbsolutePath( GetScreen()->GetFileName() );
    const SCH_RENDER_SETTINGS* cfg = static_cast<const SCH_RENDER_SETTINGS*>( aSettings );
    COLOR4D                    bg = GetColorSettings()->GetColor( LAYER_SCHEMATIC_BACKGROUND );
 
    cfg->GetPrintDC()->SetBackground( wxBrush( bg.ToColour() ) );
    cfg->GetPrintDC()->Clear();
 
    cfg->GetPrintDC()->SetLogicalFunction( wxCOPY );
    GetScreen()->Print( cfg );
    PrintDrawingSheet( cfg, GetScreen(), Schematic().GetProperties(), schIUScale.IU_PER_MILS, fileName );
}
 
 
void SCH_EDIT_FRAME::RefreshOperatingPointDisplay()
{
    SCHEMATIC_SETTINGS& settings = m_schematic->Settings();
    SIM_LIB_MGR         simLibMgr( &Prj() );
    NULL_REPORTER       devnull;
 
    // Patch for bug early in V7.99 dev
    if( settings.m_OPO_VRange.EndsWith( 'A' ) )
        settings.m_OPO_VRange[ settings.m_OPO_VRange.Length() - 1 ] = 'V';
 
    // Update items which may have ${OP} text variables
    //
    GetCanvas()->GetView()->UpdateAllItemsConditionally(
            [&]( KIGFX::VIEW_ITEM* aItem ) -> int
            {
                int flags = 0;
 
                auto invalidateTextVars =
                        [&flags]( EDA_TEXT* text )
                        {
                            if( text->HasTextVars() )
                            {
                                text->ClearRenderCache();
                                text->ClearBoundingBoxCache();
                                flags |= KIGFX::GEOMETRY | KIGFX::REPAINT;
                            }
                        };
 
                if( SCH_ITEM* item = dynamic_cast<SCH_ITEM*>( aItem ) )
                {
                    item->RunOnChildren(
                            [&invalidateTextVars]( SCH_ITEM* aChild )
                            {
                                if( EDA_TEXT* text = dynamic_cast<EDA_TEXT*>( aChild ) )
                                    invalidateTextVars( text );
                            } );
                }
 
                if( EDA_TEXT* text = dynamic_cast<EDA_TEXT*>( aItem ) )
                    invalidateTextVars( text );
 
                return flags;
            } );
 
    // Update OP overlay items
    //
    for( SCH_ITEM* item : GetScreen()->Items() )
    {
        if( GetCurrentSheet().GetExcludedFromSim() )
            continue;
 
        if( item->Type() == SCH_LINE_T )
        {
            SCH_LINE* line = static_cast<SCH_LINE*>( item );
 
            if( !line->GetOperatingPoint().IsEmpty() )
                GetCanvas()->GetView()->Update( line );
 
            line->SetOperatingPoint( wxEmptyString );
            // update value from netlist, below
        }
        else if( item->Type() == SCH_SYMBOL_T )
        {
            SCH_SYMBOL*           symbol = static_cast<SCH_SYMBOL*>( item );
            wxString              ref = symbol->GetRef( &GetCurrentSheet() );
            std::vector<SCH_PIN*> pins = symbol->GetPins( &GetCurrentSheet() );
 
            // Power symbols and other symbols which have the reference starting with "#" are
            // not included in simulation
            if( ref.StartsWith( '#' ) || symbol->GetExcludedFromSim() )
                continue;
 
            for( SCH_PIN* pin : pins )
            {
                if( !pin->GetOperatingPoint().IsEmpty() )
                    GetCanvas()->GetView()->Update( pin );
 
                pin->SetOperatingPoint( wxEmptyString );
            }
 
            if( pins.size() == 2 )
            {
                wxString op = m_schematic->GetOperatingPoint( ref, settings.m_OPO_IPrecision,
                                                              settings.m_OPO_IRange );
 
                if( !op.IsEmpty() && op != wxS( "--" ) && op != wxS( "?" ) )
                {
                    pins[0]->SetOperatingPoint( op );
                    GetCanvas()->GetView()->Update( symbol );
                }
            }
            else
            {
                SIM_MODEL& model = simLibMgr.CreateModel( &GetCurrentSheet(), *symbol,
                                                          devnull ).model;
 
                SPICE_ITEM spiceItem;
                spiceItem.refName = ref;
                ref = model.SpiceGenerator().ItemName( spiceItem );
 
                for( const auto& modelPin : model.GetPins() )
                {
                    SCH_PIN* symbolPin = symbol->GetPin( modelPin.get().symbolPinNumber );
                    wxString signalName = ref + wxS( ":" ) + modelPin.get().modelPinName;
                    wxString op = m_schematic->GetOperatingPoint( signalName,
                                                                  settings.m_OPO_IPrecision,
                                                                  settings.m_OPO_IRange );
 
                    if( symbolPin && !op.IsEmpty() && op != wxS( "--" ) && op != wxS( "?" ) )
                    {
                        symbolPin->SetOperatingPoint( op );
                        GetCanvas()->GetView()->Update( symbol );
                    }
                }
            }
        }
    }
 
    for( const auto& [ key, subgraphList ] : m_schematic->m_connectionGraph->GetNetMap() )
    {
        wxString op = m_schematic->GetOperatingPoint( key.Name, settings.m_OPO_VPrecision,
                                                      settings.m_OPO_VRange );
 
        if( !op.IsEmpty() && op != wxS( "--" ) && op != wxS( "?" ) )
        {
            for( CONNECTION_SUBGRAPH* subgraph : subgraphList )
            {
                SCH_LINE* longestWire = nullptr;
                double    length = 0.0;
 
                if( subgraph->GetSheet().GetExcludedFromSim() )
                    continue;
 
                for( SCH_ITEM* item : subgraph->GetItems() )
                {
                    if( item->Type() == SCH_LINE_T )
                    {
                        SCH_LINE* line = static_cast<SCH_LINE*>( item );
 
                        if( line->IsWire() && line->GetLength() > length )
                        {
                            longestWire = line;
                            length = line->GetLength();
                        }
                    }
                }
 
                if( longestWire )
                {
                    longestWire->SetOperatingPoint( op );
                    GetCanvas()->GetView()->Update( longestWire );
                }
            }
        }
    }
}
 
 
void SCH_EDIT_FRAME::AutoRotateItem( SCH_SCREEN* aScreen, SCH_ITEM* aItem )
{
    if( aItem->Type() == SCH_GLOBAL_LABEL_T || aItem->Type() == SCH_HIER_LABEL_T )
    {
        SCH_LABEL_BASE* label = static_cast<SCH_LABEL_BASE*>( aItem );
 
        if( label->AutoRotateOnPlacement() )
        {
            SPIN_STYLE spin = aScreen->GetLabelOrientationForPoint( label->GetPosition(),
                                                                    label->GetSpinStyle(),
                                                                    &GetCurrentSheet() );
 
            if( spin != label->GetSpinStyle() )
            {
                label->SetSpinStyle( spin );
 
                for( SCH_ITEM* item : aScreen->Items().OfType( SCH_GLOBAL_LABEL_T ) )
                {
                    SCH_LABEL_BASE* otherLabel = static_cast<SCH_LABEL_BASE*>( item );
 
                    if( otherLabel != label && otherLabel->GetText() == label->GetText() )
                        otherLabel->AutoplaceFields( aScreen, AUTOPLACE_AUTO );
                }
            }
        }
    }
}
 
 
void SCH_EDIT_FRAME::updateTitle()
{
    SCH_SCREEN* screen = GetScreen();
 
    wxCHECK( screen, /* void */ );
 
    wxString title;
 
    if( !screen->GetFileName().IsEmpty() )
    {
        wxFileName fn( Prj().AbsolutePath( screen->GetFileName() ) );
        bool       readOnly = false;
        bool       unsaved = false;
 
        if( fn.IsOk() && screen->FileExists() )
            readOnly = screen->IsReadOnly();
        else
            unsaved = true;
 
        if( IsContentModified() )
            title = wxT( "*" );
 
        title += fn.GetName();
 
        wxString sheetPath = GetCurrentSheet().PathHumanReadable( false, true );
 
        if( sheetPath != title )
            title += wxString::Format( wxT( " [%s]" ), sheetPath );
 
        if( readOnly )
            title += wxS( " " ) + _( "[Read Only]" );
 
        if( unsaved )
            title += wxS( " " ) +  _( "[Unsaved]" );
    }
    else
    {
        title = _( "[no schematic loaded]" );
    }
 
    title += wxT( " \u2014 " ) + _( "Schematic Editor" );
 
    SetTitle( title );
}
 
 
void SCH_EDIT_FRAME::initScreenZoom()
{
    m_toolManager->RunAction( ACTIONS::zoomFitScreen );
    GetScreen()->m_zoomInitialized = true;
}
 
 
void SCH_EDIT_FRAME::RecalculateConnections( SCH_COMMIT* aCommit, SCH_CLEANUP_FLAGS aCleanupFlags )
{
    wxString            highlightedConn = GetHighlightedConnection();
    bool                hasHighlightedConn = !highlightedConn.IsEmpty();
    SCHEMATIC_SETTINGS& settings = Schematic().Settings();
    SCH_SHEET_LIST      list = Schematic().Hierarchy();
    SCH_COMMIT          localCommit( m_toolManager );
 
    if( !aCommit )
        aCommit = &localCommit;
 
    PROF_TIMER timer;
 
    // Ensure schematic graph is accurate
    if( aCleanupFlags == LOCAL_CLEANUP )
    {
        SchematicCleanUp( aCommit, GetScreen() );
    }
    else if( aCleanupFlags == GLOBAL_CLEANUP )
    {
        for( const SCH_SHEET_PATH& sheet : list )
            SchematicCleanUp( aCommit, sheet.LastScreen() );
    }
 
    timer.Stop();
    wxLogTrace( "CONN_PROFILE", "SchematicCleanUp() %0.4f ms", timer.msecs() );
 
    if( settings.m_IntersheetRefsShow )
        RecomputeIntersheetRefs();
 
    std::function<void( SCH_ITEM* )> changeHandler =
            [&]( SCH_ITEM* aChangedItem ) -> void
            {
                GetCanvas()->GetView()->Update( aChangedItem, KIGFX::REPAINT );
 
                SCH_CONNECTION* connection = aChangedItem->Connection();
 
                if( m_highlightedConnChanged )
                    return;
 
                if( !hasHighlightedConn )
                {
                    // No highlighted connection, but connectivity has changed, so refresh
                    // the list of all nets
                    m_highlightedConnChanged = true;
                }
                else if( connection
                         && ( connection->Name() == highlightedConn
                              || connection->HasDriverChanged() ) )
                {
                    m_highlightedConnChanged = true;
                }
            };
 
    if( !ADVANCED_CFG::GetCfg().m_IncrementalConnectivity || aCleanupFlags == GLOBAL_CLEANUP
            || m_undoList.m_CommandsList.empty()|| Schematic().ConnectionGraph()->IsMinor() )
    {
        // Clear all resolved netclass caches in case labels have changed
        Prj().GetProjectFile().NetSettings()->ClearAllCaches();
 
        // Update all rule areas so we can cascade implied connectivity changes
        std::unordered_set<SCH_SCREEN*> all_screens;
 
        for( const SCH_SHEET_PATH& path : list )
            all_screens.insert( path.LastScreen() );
 
        SCH_RULE_AREA::UpdateRuleAreasInScreens( all_screens, GetCanvas()->GetView() );
 
        // Recalculate all connectivity
        Schematic().ConnectionGraph()->Recalculate( list, true, &changeHandler );
    }
    else
    {
        struct CHANGED_ITEM
        {
            SCH_ITEM*   item;
            SCH_ITEM*   linked_item;
            SCH_SCREEN* screen;
        };
 
        PICKED_ITEMS_LIST* changed_list = m_undoList.m_CommandsList.back();
 
        // Final change sets
        std::set<SCH_ITEM*>                            changed_items;
        std::set<VECTOR2I>                             pts;
        std::set<std::pair<SCH_SHEET_PATH, SCH_ITEM*>> item_paths;
 
        // Working change sets
        std::unordered_set<SCH_SCREEN*>                  changed_screens;
        std::set<std::pair<SCH_RULE_AREA*, SCH_SCREEN*>> changed_rule_areas;
        std::vector<CHANGED_ITEM>                        changed_connectable_items;
 
        // Lambda to add an item to the connectivity update sets
        auto addItemToChangeSet = [&changed_items, &pts, &item_paths]( CHANGED_ITEM itemData )
        {
            std::vector<SCH_SHEET_PATH>& paths = itemData.screen->GetClientSheetPaths();
 
            std::vector<VECTOR2I> tmp_pts = itemData.item->GetConnectionPoints();
            pts.insert( tmp_pts.begin(), tmp_pts.end() );
            changed_items.insert( itemData.item );
 
            for( SCH_SHEET_PATH& path : paths )
                item_paths.insert( std::make_pair( path, itemData.item ) );
 
            if( !itemData.linked_item || !itemData.linked_item->IsConnectable() )
                return;
 
            tmp_pts = itemData.linked_item->GetConnectionPoints();
            pts.insert( tmp_pts.begin(), tmp_pts.end() );
            changed_items.insert( itemData.linked_item );
 
            // We have to directly add the pins here because the link may not exist on the schematic
            // anymore and so won't be picked up by GetScreen()->Items().Overlapping() below.
            if( SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( itemData.linked_item ) )
            {
                std::vector<SCH_PIN*> pins = symbol->GetPins();
                changed_items.insert( pins.begin(), pins.end() );
            }
 
            for( SCH_SHEET_PATH& path : paths )
                item_paths.insert( std::make_pair( path, itemData.linked_item ) );
        };
 
        // Get all changed connectable items and determine all changed screens
        for( unsigned ii = 0; ii < changed_list->GetCount(); ++ii )
        {
            switch( changed_list->GetPickedItemStatus( ii ) )
            {
                // Only care about changed, new, and deleted items, the other
                // cases are not connectivity-related
                case UNDO_REDO::CHANGED:
                case UNDO_REDO::NEWITEM:
                case UNDO_REDO::DELETED:
                    break;
 
                default:
                    continue;
            }
 
            SCH_ITEM* item = dynamic_cast<SCH_ITEM*>( changed_list->GetPickedItem( ii ) );
 
            if( item )
            {
                SCH_SCREEN* screen =
                        static_cast<SCH_SCREEN*>( changed_list->GetScreenForItem( ii ) );
                changed_screens.insert( screen );
 
                if( item->Type() == SCH_RULE_AREA_T )
                {
                    SCH_RULE_AREA* ruleArea = static_cast<SCH_RULE_AREA*>( item );
 
                    // Clear item and directive associations for this rule area
                    ruleArea->ResetDirectivesAndItems( GetCanvas()->GetView() );
 
                    changed_rule_areas.insert( { ruleArea, screen } );
                }
                else if( item->IsConnectable() )
                {
                    SCH_ITEM* linked_item =
                            dynamic_cast<SCH_ITEM*>( changed_list->GetPickedItemLink( ii ) );
                    changed_connectable_items.push_back( { item, linked_item, screen } );
                }
            }
        }
 
        // Update rule areas in changed screens to propagate any directive connectivity changes
        std::vector<std::pair<SCH_RULE_AREA*, SCH_SCREEN*>> forceUpdateRuleAreas =
                SCH_RULE_AREA::UpdateRuleAreasInScreens( changed_screens, GetCanvas()->GetView() );
 
        std::for_each( forceUpdateRuleAreas.begin(), forceUpdateRuleAreas.end(),
                       [&]( std::pair<SCH_RULE_AREA*, SCH_SCREEN*>& updatedRuleArea )
                       {
                           changed_rule_areas.insert( updatedRuleArea );
                       } );
 
        // If a SCH_RULE_AREA was changed, we need to add all past and present contained items to
        // update their connectivity
        for( const std::pair<SCH_RULE_AREA*, SCH_SCREEN*>& changedRuleArea : changed_rule_areas )
        {
            for( SCH_ITEM* containedItem :
                 changedRuleArea.first->GetPastAndPresentContainedItems() )
            {
                addItemToChangeSet( { containedItem, nullptr, changedRuleArea.second } );
            }
        }
 
        // Add all changed items, and associated items, to the change set
        for( CHANGED_ITEM& changed_item_data : changed_connectable_items )
        {
            addItemToChangeSet( changed_item_data );
 
            // If a SCH_DIRECTIVE_LABEL was changed which is attached to a SCH_RULE_AREA, we need
            // to add the contained items to the change set to force update of their connectivity
            if( changed_item_data.item->Type() == SCH_DIRECTIVE_LABEL_T )
            {
                const std::vector<VECTOR2I> labelConnectionPoints =
                        changed_item_data.item->GetConnectionPoints();
 
                EE_RTREE::EE_TYPE candidateRuleAreas =
                        changed_item_data.screen->Items().Overlapping(
                                SCH_RULE_AREA_T, changed_item_data.item->GetBoundingBox() );
 
                for( SCH_ITEM* candidateRuleArea : candidateRuleAreas )
                {
                    SCH_RULE_AREA*      ruleArea = static_cast<SCH_RULE_AREA*>( candidateRuleArea );
                    std::vector<SHAPE*> borderShapes = ruleArea->MakeEffectiveShapes( true );
 
                    if( ruleArea->GetPolyShape().CollideEdge( labelConnectionPoints[0], nullptr,
                                                              5 ) )
                    {
                        for( SCH_ITEM* containedItem : ruleArea->GetPastAndPresentContainedItems() )
                            addItemToChangeSet(
                                    { containedItem, nullptr, changed_item_data.screen } );
                    }
                }
            }
        }
 
        for( const VECTOR2I& pt: pts )
        {
            for( SCH_ITEM* item : GetScreen()->Items().Overlapping( pt ) )
            {
                // Leave this check in place.  Overlapping items are not necessarily connectable.
                if( !item->IsConnectable() )
                    continue;
 
                if( item->Type() == SCH_LINE_T )
                {
                    if( item->HitTest( pt ) )
                        changed_items.insert( item );
                }
                else if( item->Type() == SCH_SYMBOL_T && item->IsConnected( pt ) )
                {
                    SCH_SYMBOL*           symbol = static_cast<SCH_SYMBOL*>( item );
                    std::vector<SCH_PIN*> pins = symbol->GetPins();
 
                    changed_items.insert( pins.begin(), pins.end() );
                }
                else if( item->Type() == SCH_SHEET_T )
                {
                    SCH_SHEET* sheet = static_cast<SCH_SHEET*>( item );
 
                    wxCHECK2( sheet, continue );
 
                    std::vector<SCH_SHEET_PIN*> sheetPins = sheet->GetPins();
                    changed_items.insert( sheetPins.begin(), sheetPins.end() );
                }
                else
                {
                    if( item->IsConnected( pt ) )
                        changed_items.insert( item );
                }
            }
        }
 
        std::set<std::pair<SCH_SHEET_PATH, SCH_ITEM*>> all_items =
                Schematic().ConnectionGraph()->ExtractAffectedItems( changed_items );
 
        all_items.insert( item_paths.begin(), item_paths.end() );
 
        CONNECTION_GRAPH new_graph( &Schematic() );
 
        new_graph.SetLastCodes( Schematic().ConnectionGraph() );
 
        std::shared_ptr<NET_SETTINGS> netSettings = Prj().GetProjectFile().NetSettings();
 
        std::set<wxString> affectedNets;
 
        for( auto&[ path, item ] : all_items )
        {
            wxCHECK2( item, continue );
            item->SetConnectivityDirty();
            SCH_CONNECTION* conn = item->Connection();
 
            if( conn )
            {
                affectedNets.insert( conn->Name() );
            }
        }
 
        // Reset resolved netclass cache for this connection
        for( const wxString& netName : affectedNets )
            netSettings->ClearCacheForNet( netName );
 
        new_graph.Recalculate( list, false, &changeHandler );
        Schematic().ConnectionGraph()->Merge( new_graph );
    }
 
    GetCanvas()->GetView()->UpdateAllItemsConditionally(
            [&]( KIGFX::VIEW_ITEM* aItem ) -> int
            {
                int             flags = 0;
                SCH_ITEM*       item = dynamic_cast<SCH_ITEM*>( aItem );
                SCH_CONNECTION* connection = item ? item->Connection() : nullptr;
 
                auto invalidateTextVars =
                        [&flags]( EDA_TEXT* text )
                        {
                            if( text->HasTextVars() )
                            {
                                text->ClearRenderCache();
                                text->ClearBoundingBoxCache();
                                flags |= KIGFX::GEOMETRY | KIGFX::REPAINT;
                            }
                        };
 
                if( connection && connection->HasDriverChanged() )
                {
                    connection->ClearDriverChanged();
                    flags |= KIGFX::REPAINT;
                }
 
                if( item )
                {
                    item->RunOnChildren(
                            [&invalidateTextVars]( SCH_ITEM* aChild )
                            {
                                if( EDA_TEXT* text = dynamic_cast<EDA_TEXT*>( aChild ) )
                                    invalidateTextVars( text );
                            } );
 
                    if( flags & KIGFX::GEOMETRY )
                        GetScreen()->Update( item, false );     // Refresh RTree
                }
 
                if( EDA_TEXT* text = dynamic_cast<EDA_TEXT*>( aItem ) )
                    invalidateTextVars( text );
 
                return flags;
            } );
 
    if( m_highlightedConnChanged
        || !Schematic().ConnectionGraph()->FindFirstSubgraphByName( highlightedConn ) )
    {
        GetToolManager()->RunAction( EE_ACTIONS::updateNetHighlighting );
        RefreshNetNavigator();
        m_highlightedConnChanged = false;
    }
 
    if( !localCommit.Empty() )
        localCommit.Push( _( "Schematic Cleanup" ) );
}
 
 
void SCH_EDIT_FRAME::RecomputeIntersheetRefs()
{
    Schematic().RecomputeIntersheetRefs( [&]( SCH_GLOBALLABEL* label )
                                         {
                                             for( SCH_FIELD& field : label->GetFields() )
                                                 field.ClearBoundingBoxCache();
 
                                             label->ClearBoundingBoxCache();
                                             GetCanvas()->GetView()->Update( label );
                                         } );
}
 
 
void SCH_EDIT_FRAME::ShowAllIntersheetRefs( bool aShow )
{
    RecomputeIntersheetRefs();
 
    GetCanvas()->GetView()->SetLayerVisible( LAYER_INTERSHEET_REFS, aShow );
}
 
 
std::unique_ptr<GRID_HELPER> SCH_EDIT_FRAME::MakeGridHelper()
{
    return std::make_unique<EE_GRID_HELPER>( m_toolManager );
}
 
 
void SCH_EDIT_FRAME::CommonSettingsChanged( bool aEnvVarsChanged, bool aTextVarsChanged )
{
    SCH_BASE_FRAME::CommonSettingsChanged( aEnvVarsChanged, aTextVarsChanged );
 
    SCHEMATIC_SETTINGS& settings = Schematic().Settings();
 
    settings.m_JunctionSize = GetSchematicJunctionSize();
 
    ShowAllIntersheetRefs( settings.m_IntersheetRefsShow );
 
    SETTINGS_MANAGER&  mgr = Pgm().GetSettingsManager();
    EESCHEMA_SETTINGS* cfg = mgr.GetAppSettings<EESCHEMA_SETTINGS>( "eeschema" );
    GetGalDisplayOptions().ReadWindowSettings( cfg->m_Window );
    GetRenderSettings()->SetDefaultFont( cfg->m_Appearance.default_font );
 
    KIGFX::VIEW* view = GetCanvas()->GetView();
    view->SetLayerVisible( LAYER_ERC_ERR, cfg->m_Appearance.show_erc_errors );
    view->SetLayerVisible( LAYER_ERC_WARN, cfg->m_Appearance.show_erc_warnings );
    view->SetLayerVisible( LAYER_ERC_EXCLUSION, cfg->m_Appearance.show_erc_exclusions );
    view->SetLayerVisible( LAYER_OP_VOLTAGES, cfg->m_Appearance.show_op_voltages );
    view->SetLayerVisible( LAYER_OP_CURRENTS, cfg->m_Appearance.show_op_currents );
 
    RefreshOperatingPointDisplay();
 
    settings.m_TemplateFieldNames.DeleteAllFieldNameTemplates( true /* global */ );
 
    if( !cfg->m_Drawing.field_names.IsEmpty() )
        settings.m_TemplateFieldNames.AddTemplateFieldNames( cfg->m_Drawing.field_names );
 
    SCH_SCREEN* screen = GetCurrentSheet().LastScreen();
 
    for( SCH_ITEM* item : screen->Items() )
        item->ClearCaches();
 
    for( const auto& [ libItemName, libSymbol ] : screen->GetLibSymbols() )
        libSymbol->ClearCaches();
 
    GetCanvas()->ForceRefresh();
 
    RecreateToolbars();
    Layout();
    SendSizeEvent();
}
 
 
void SCH_EDIT_FRAME::OnPageSettingsChange()
{
    // Store the current zoom level into the current screen before calling
    // DisplayCurrentSheet() that set the zoom to GetScreen()->m_LastZoomLevel
    GetScreen()->m_LastZoomLevel = GetCanvas()->GetView()->GetScale();
 
    // Rebuild the sheet view (draw area and any other items):
    DisplayCurrentSheet();
}
 
 
void SCH_EDIT_FRAME::ShowChangedLanguage()
{
    // call my base class
    SCH_BASE_FRAME::ShowChangedLanguage();
 
    // tooltips in toolbars
    RecreateToolbars();
 
    m_auimgr.GetPane( m_hierarchy ).Caption( _( "Schematic Hierarchy" ) );
    m_auimgr.GetPane( m_selectionFilterPanel ).Caption( _( "Selection Filter" ) );
    m_auimgr.GetPane( m_propertiesPanel ).Caption( _( "Properties" ) );
    m_auimgr.Update();
    m_hierarchy->UpdateHierarchyTree();
 
    // status bar
    UpdateMsgPanel();
 
    updateTitle();
 
    // This ugly hack is to fix an option(left) toolbar update bug that seems to only affect
    // windows.  See https://bugs.launchpad.net/kicad/+bug/1816492.  For some reason, calling
    // wxWindow::Refresh() does not resolve the issue.  Only a resize event seems to force the
    // toolbar to update correctly.
#if defined( __WXMSW__ )
    PostSizeEvent();
#endif
}
 
 
void SCH_EDIT_FRAME::UpdateNetHighlightStatus()
{
    if( !GetHighlightedConnection().IsEmpty() )
    {
        SetStatusText( wxString::Format( _( "Highlighted net: %s" ),
                                         UnescapeString( GetHighlightedConnection() ) ) );
    }
    else
    {
        SetStatusText( wxT( "" ) );
    }
}
 
 
void SCH_EDIT_FRAME::SetScreen( BASE_SCREEN* aScreen )
{
    if( m_toolManager )
        m_toolManager->RunAction( EE_ACTIONS::clearSelection );
 
    SCH_BASE_FRAME::SetScreen( aScreen );
    GetCanvas()->DisplaySheet( static_cast<SCH_SCREEN*>( aScreen ) );
 
    if( m_toolManager )
        m_toolManager->ResetTools( TOOL_BASE::MODEL_RELOAD );
}
 
 
const BOX2I SCH_EDIT_FRAME::GetDocumentExtents( bool aIncludeAllVisible ) const
{
    BOX2I bBoxDoc;
 
    if( aIncludeAllVisible )
    {
        // Get the whole page size and return that
        int sizeX = GetScreen()->GetPageSettings().GetWidthIU( schIUScale.IU_PER_MILS );
        int sizeY = GetScreen()->GetPageSettings().GetHeightIU( schIUScale.IU_PER_MILS );
        bBoxDoc   = BOX2I( VECTOR2I( 0, 0 ), VECTOR2I( sizeX, sizeY ) );
    }
    else
    {
        // Get current drawing-sheet in a form we can compare to an EDA_ITEM
        DS_PROXY_VIEW_ITEM* ds = SCH_BASE_FRAME::GetCanvas()->GetView()->GetDrawingSheet();
        EDA_ITEM*           dsAsItem = static_cast<EDA_ITEM*>( ds );
 
        // Calc the bounding box of all items on screen except the page border
        for( EDA_ITEM* item : GetScreen()->Items() )
        {
            if( item != dsAsItem ) // Ignore the drawing-sheet itself
                bBoxDoc.Merge( item->GetBoundingBox() );
        }
    }
 
    return bBoxDoc;
}
 
 
bool SCH_EDIT_FRAME::IsContentModified() const
{
    return Schematic().Hierarchy().IsModified();
}
 
 
bool SCH_EDIT_FRAME::GetShowAllPins() const
{
    EESCHEMA_SETTINGS* cfg = eeconfig();
    return cfg && cfg->m_Appearance.show_hidden_pins;
}
 
 
void SCH_EDIT_FRAME::FocusOnItem( SCH_ITEM* aItem )
{
    static KIID lastBrightenedItemID( niluuid );
 
    SCH_SHEET_PATH dummy;
    SCH_ITEM*      lastItem = Schematic().GetItem( lastBrightenedItemID, &dummy );
 
    if( lastItem && lastItem != aItem )
    {
        lastItem->ClearBrightened();
 
        UpdateItem( lastItem );
        lastBrightenedItemID = niluuid;
    }
 
    if( aItem )
    {
        if( !aItem->IsBrightened() )
        {
            aItem->SetBrightened();
 
            UpdateItem( aItem );
            lastBrightenedItemID = aItem->m_Uuid;
        }
 
        FocusOnLocation( aItem->GetFocusPosition() );
    }
}
 
 
wxString SCH_EDIT_FRAME::GetCurrentFileName() const
{
    return Schematic().GetFileName();
}
 
 
SELECTION& SCH_EDIT_FRAME::GetCurrentSelection()
{
    return m_toolManager->GetTool<EE_SELECTION_TOOL>()->GetSelection();
}
 
 
void SCH_EDIT_FRAME::onSize( wxSizeEvent& aEvent )
{
    if( IsShown() )
    {
        // We only need this until the frame is done resizing and the final client size is
        // established.
        Unbind( wxEVT_SIZE, &SCH_EDIT_FRAME::onSize, this );
        GetToolManager()->RunAction( ACTIONS::zoomFitScreen );
    }
 
    // Skip() is called in the base class.
    EDA_DRAW_FRAME::OnSize( aEvent );
}
 
 
void SCH_EDIT_FRAME::SaveSymbolToSchematic( const LIB_SYMBOL& aSymbol,
                                            const KIID& aSchematicSymbolUUID )
{
    SCH_SHEET_PATH principalPath;
    SCH_SHEET_LIST sheets = Schematic().Hierarchy();
    SCH_ITEM*      item = sheets.GetItem( aSchematicSymbolUUID, &principalPath );
    SCH_SYMBOL*    principalSymbol = dynamic_cast<SCH_SYMBOL*>( item );
    SCH_COMMIT     commit( m_toolManager );
 
    if( !principalSymbol )
        return;
 
    wxString principalRef;
 
    if( principalSymbol->IsAnnotated( &principalPath ) )
        principalRef = principalSymbol->GetRef( &principalPath, false );
 
    std::vector< std::pair<SCH_SYMBOL*, SCH_SHEET_PATH> > allUnits;
 
    for( const SCH_SHEET_PATH& path : sheets )
    {
        for( SCH_ITEM* candidate : path.LastScreen()->Items().OfType( SCH_SYMBOL_T ) )
        {
            SCH_SYMBOL* candidateSymbol = static_cast<SCH_SYMBOL*>( candidate );
 
            if( candidateSymbol == principalSymbol
                || ( candidateSymbol->IsAnnotated( &path )
                     && candidateSymbol->GetRef( &path, false ) == principalRef ) )
            {
                allUnits.emplace_back( candidateSymbol, path );
            }
        }
    }
 
    for( auto& [ unit, path ] : allUnits )
    {
        // This needs to be done before the LIB_SYMBOL is changed to prevent stale
        // library symbols in the schematic file.
        path.LastScreen()->Remove( unit );
 
        if( !unit->IsNew() )
            commit.Modify( unit, path.LastScreen() );
 
        unit->SetLibSymbol( aSymbol.Flatten().release() );
        unit->UpdateFields( &GetCurrentSheet(),
                            true, /* update style */
                            true, /* update ref */
                            true, /* update other fields */
                            false, /* reset ref */
                            false /* reset other fields */ );
 
        path.LastScreen()->Append( unit );
        GetCanvas()->GetView()->Update( unit );
    }
 
    if( !commit.Empty() )
        commit.Push( _( "Save Symbol to Schematic" ) );
}
 
 
void SCH_EDIT_FRAME::UpdateItem( EDA_ITEM* aItem, bool isAddOrDelete, bool aUpdateRtree )
{
    SCH_BASE_FRAME::UpdateItem( aItem, isAddOrDelete, aUpdateRtree );
 
    if( SCH_ITEM* sch_item = dynamic_cast<SCH_ITEM*>( aItem ) )
        sch_item->ClearCaches();
}
 
 
void SCH_EDIT_FRAME::DisplayCurrentSheet()
{
    wxCHECK( m_toolManager, /* void */ );
 
    m_toolManager->RunAction( ACTIONS::cancelInteractive );
    m_toolManager->RunAction( EE_ACTIONS::clearSelection );
    SCH_SCREEN* screen = GetCurrentSheet().LastScreen();
 
    wxCHECK( screen, /* void */ );
 
    m_toolManager->RunAction( EE_ACTIONS::clearSelection );
 
    SCH_BASE_FRAME::SetScreen( screen );
 
    SetSheetNumberAndCount();   // will also update CurrentScreen()'s sheet number info
 
    m_toolManager->ResetTools( TOOL_BASE::MODEL_RELOAD );
 
    // update the references, units, and intersheet-refs
    GetCurrentSheet().UpdateAllScreenReferences();
 
    // dangling state can also have changed if different units with different pin locations are
    // used
    GetCurrentSheet().LastScreen()->TestDanglingEnds();
    RefreshOperatingPointDisplay();
 
    EE_SELECTION_TOOL* selectionTool = m_toolManager->GetTool<EE_SELECTION_TOOL>();
 
    wxCHECK( selectionTool, /* void */ );
 
    auto visit =
            [&]( EDA_ITEM* item )
            {
                if( m_findReplaceDialog
                        && !m_findReplaceData->findString.IsEmpty()
                        && item->Matches( *m_findReplaceData, &GetCurrentSheet() ) )
                {
                    item->SetForceVisible( true );
                    selectionTool->BrightenItem( item );
                }
                else if( item->IsBrightened() )
                {
                    item->SetForceVisible( false );
                    selectionTool->UnbrightenItem( item );
                }
            };
 
    for( SCH_ITEM* item : screen->Items() )
    {
        visit( item );
 
        item->RunOnChildren(
                [&]( SCH_ITEM* aChild )
                {
                    visit( aChild );
                } );
    }
 
    if( !screen->m_zoomInitialized )
    {
        initScreenZoom();
    }
    else
    {
        // Set zoom to last used in this screen
        GetCanvas()->GetView()->SetScale( GetScreen()->m_LastZoomLevel );
        GetCanvas()->GetView()->SetCenter( GetScreen()->m_ScrollCenter );
    }
 
    updateTitle();
 
    HardRedraw();   // Ensure all items are redrawn (especially the drawing-sheet items)
 
    // Allow tools to re-add their VIEW_ITEMs after the last call to Clear in HardRedraw
    m_toolManager->ResetTools( TOOL_BASE::MODEL_RELOAD );
 
    SCH_EDITOR_CONTROL* editTool = m_toolManager->GetTool<SCH_EDITOR_CONTROL>();
 
    wxCHECK( editTool, /* void */ );
 
    TOOL_EVENT dummy;
    editTool->UpdateNetHighlighting( dummy );
 
    m_hierarchy->UpdateHierarchySelection();
 
    m_schematic->OnSchSheetChanged();
}
 
 
DIALOG_BOOK_REPORTER* SCH_EDIT_FRAME::GetSymbolDiffDialog()
{
    if( !m_diffSymbolDialog )
        m_diffSymbolDialog = new DIALOG_BOOK_REPORTER( this, DIFF_SYMBOLS_DIALOG_NAME,
                                                       _( "Compare Symbol with Library" ) );
 
    return m_diffSymbolDialog;
}
 
 
void SCH_EDIT_FRAME::onCloseSymbolDiffDialog( wxCommandEvent& aEvent )
{
    if( m_diffSymbolDialog && aEvent.GetString() == DIFF_SYMBOLS_DIALOG_NAME )
    {
        m_diffSymbolDialog->Destroy();
        m_diffSymbolDialog = nullptr;
    }
}
 
 
DIALOG_ERC* SCH_EDIT_FRAME::GetErcDialog()
{
    if( !m_ercDialog )
        m_ercDialog = new DIALOG_ERC( this );
 
    return m_ercDialog;
}
 
 
void SCH_EDIT_FRAME::onCloseErcDialog( wxCommandEvent& aEvent )
{
    if( m_ercDialog )
    {
        m_ercDialog->Destroy();
        m_ercDialog = nullptr;
    }
}
 
 
DIALOG_SYMBOL_FIELDS_TABLE* SCH_EDIT_FRAME::GetSymbolFieldsTableDialog()
{
    if( !m_symbolFieldsTableDialog )
        m_symbolFieldsTableDialog = new DIALOG_SYMBOL_FIELDS_TABLE( this );
 
    return m_symbolFieldsTableDialog;
}
 
 
void SCH_EDIT_FRAME::onCloseSymbolFieldsTableDialog( wxCommandEvent& aEvent )
{
    if( m_symbolFieldsTableDialog )
    {
        m_symbolFieldsTableDialog->Destroy();
        m_symbolFieldsTableDialog = nullptr;
    }
}
 
 
void SCH_EDIT_FRAME::AddSchematicChangeListener( wxEvtHandler* aListener )
{
    auto it = std::find( m_schematicChangeListeners.begin(), m_schematicChangeListeners.end(),
                         aListener );
 
    // Don't add duplicate listeners.
    if( it == m_schematicChangeListeners.end() )
        m_schematicChangeListeners.push_back( aListener );
}
 
 
void SCH_EDIT_FRAME::RemoveSchematicChangeListener( wxEvtHandler* aListener )
{
    auto it = std::find( m_schematicChangeListeners.begin(), m_schematicChangeListeners.end(),
                         aListener );
 
    // Don't add duplicate listeners.
    if( it != m_schematicChangeListeners.end() )
        m_schematicChangeListeners.erase( it );
}
 
 
wxTreeCtrl* SCH_EDIT_FRAME::createHighlightedNetNavigator()
{
    m_netNavigator = new wxTreeCtrl( this, wxID_ANY, wxPoint( 0, 0 ),
                                     FromDIP( wxSize( 160, 250 ) ),
                                     wxTR_DEFAULT_STYLE | wxNO_BORDER );
 
    return m_netNavigator;
}
 
 
void SCH_EDIT_FRAME::SetHighlightedConnection( const wxString& aConnection,
                                               const NET_NAVIGATOR_ITEM_DATA* aSelection )
{
    bool refreshNetNavigator = aConnection != m_highlightedConn;
 
    m_highlightedConn = aConnection;
 
    if( refreshNetNavigator )
        RefreshNetNavigator( aSelection );
}
 
 
void SCH_EDIT_FRAME::unitsChangeRefresh()
{
    if( m_netNavigator )
    {
        NET_NAVIGATOR_ITEM_DATA itemData;
        wxTreeItemId selection = m_netNavigator->GetSelection();
        bool refreshSelection = selection.IsOk() && ( selection != m_netNavigator->GetRootItem() );
 
        if( refreshSelection )
        {
            NET_NAVIGATOR_ITEM_DATA* tmp =
                dynamic_cast<NET_NAVIGATOR_ITEM_DATA*>( m_netNavigator->GetItemData( selection ) );
 
            wxCHECK( tmp, /* void */ );
            itemData = *tmp;
        }
 
        m_netNavigator->DeleteAllItems();
        RefreshNetNavigator( refreshSelection ? &itemData : nullptr );
    }
 
    UpdateProperties();
}
 
 
void SCH_EDIT_FRAME::updateSelectionFilterVisbility()
{
    wxAuiPaneInfo& hierarchyPane = m_auimgr.GetPane( SchematicHierarchyPaneName() );
    wxAuiPaneInfo& netNavigatorPane = m_auimgr.GetPane( NetNavigatorPaneName() );
    wxAuiPaneInfo& propertiesPane = m_auimgr.GetPane( PropertiesPaneName() );
    wxAuiPaneInfo& selectionFilterPane = m_auimgr.GetPane( wxS( "SelectionFilter" ) );
 
    // Don't give the selection filter its own visibility controls; instead show it if
    // anything else is visible
    bool showFilter = ( hierarchyPane.IsShown() && hierarchyPane.IsDocked() )
                      || ( netNavigatorPane.IsShown() && netNavigatorPane.IsDocked() )
                      || ( propertiesPane.IsShown() && propertiesPane.IsDocked() );
 
    selectionFilterPane.Show( showFilter );
}
 
#ifdef KICAD_IPC_API
void SCH_EDIT_FRAME::onPluginAvailabilityChanged( wxCommandEvent& aEvt )
{
    wxLogTrace( traceApi, "SCH frame: EDA_EVT_PLUGIN_AVAILABILITY_CHANGED" );
    ReCreateHToolbar();
    aEvt.Skip();
}
#endif