panel_symbol_chooser.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2014 Henner Zeller <[email protected]>
 * Copyright (C) 2016-2024 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 <pgm_base.h>
#include <symbol_library.h> // For SYMBOL_LIBRARY_FILTER
#include <panel_symbol_chooser.h>
#include <kiface_base.h>
#include <sch_base_frame.h>
#include <project_sch.h>
#include <widgets/lib_tree.h>
#include <widgets/symbol_preview_widget.h>
#include <widgets/footprint_preview_widget.h>
#include <widgets/footprint_select_widget.h>
#include <settings/settings_manager.h>
#include <project/project_file.h>
#include <eeschema_settings.h>
#include <symbol_editor_settings.h>
#include <wx/button.h>
#include <wx/clipbrd.h>
#include <wx/panel.h>
#include <wx/sizer.h>
#include <wx/splitter.h>
#include <wx/timer.h>
#include <wx/wxhtml.h>
#include <wx/log.h>
 
 
wxString PANEL_SYMBOL_CHOOSER::g_symbolSearchString;
wxString PANEL_SYMBOL_CHOOSER::g_powerSearchString;
 
 
PANEL_SYMBOL_CHOOSER::PANEL_SYMBOL_CHOOSER( SCH_BASE_FRAME* aFrame, wxWindow* aParent,
 const SYMBOL_LIBRARY_FILTER* aFilter,
 std::vector<PICKED_SYMBOL>& aHistoryList,
 std::vector<PICKED_SYMBOL>& aAlreadyPlaced,
 bool aAllowFieldEdits, bool aShowFootprints,
 std::function<void()> aAcceptHandler,
 std::function<void()> aEscapeHandler ) :
 wxPanel( aParent, wxID_ANY, wxDefaultPosition, wxDefaultSize ),
 m_symbol_preview( nullptr ),
 m_hsplitter( nullptr ),
 m_vsplitter( nullptr ),
 m_fp_sel_ctrl( nullptr ),
 m_fp_preview( nullptr ),
 m_tree( nullptr ),
 m_details( nullptr ),
 m_frame( aFrame ),
 m_acceptHandler( std::move( aAcceptHandler ) ),
 m_escapeHandler( std::move( aEscapeHandler ) ),
 m_showPower( false ),
 m_allow_field_edits( aAllowFieldEdits ),
 m_show_footprints( aShowFootprints )
{
 SYMBOL_LIB_TABLE* libs = PROJECT_SCH::SchSymbolLibTable( &m_frame->Prj() );
 COMMON_SETTINGS::SESSION& session = Pgm().GetCommonSettings()->m_Session;
 PROJECT_FILE& project = m_frame->Prj().GetProjectFile();
 
 // Make sure settings are loaded before we start running multi-threaded symbol loaders
 Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
 Pgm().GetSettingsManager().GetAppSettings<SYMBOL_EDITOR_SETTINGS>();
 
 m_adapter = SYMBOL_TREE_MODEL_ADAPTER::Create( m_frame, libs );
 SYMBOL_TREE_MODEL_ADAPTER* adapter = static_cast<SYMBOL_TREE_MODEL_ADAPTER*>( m_adapter.get() );
 bool loaded = false;
 
 if( aFilter )
 {
 const wxArrayString& liblist = aFilter->GetAllowedLibList();
 
 for( const wxString& nickname : liblist )
 {
 if( libs->HasLibrary( nickname, true ) )
 {
 loaded = true;
 
 bool pinned = alg::contains( session.pinned_symbol_libs, nickname )
 || alg::contains( project.m_PinnedSymbolLibs, nickname );
 
 if( libs->FindRow( nickname )->GetIsVisible() )
 adapter->AddLibrary( nickname, pinned );
 }
 }
 
 adapter->AssignIntrinsicRanks();
 
 if( aFilter->GetFilterPowerSymbols() )
 {
 // HACK ALERT: when loading symbols we presume that *any* filter is a power symbol
 // filter. So the filter only needs to return true for libraries.
 static std::function<bool( LIB_TREE_NODE& )> powerFilter =
 []( LIB_TREE_NODE& aNode ) -> bool
 {
 return true;
 };
 
 adapter->SetFilter( &powerFilter );
 
 m_showPower = true;
 m_show_footprints = false;
 }
 }
 
 std::vector<LIB_SYMBOL> history_list_storage;
 std::vector<LIB_TREE_ITEM*> history_list;
 std::vector<LIB_SYMBOL> already_placed_storage;
 std::vector<LIB_TREE_ITEM*> already_placed;
 
 // Lambda to encapsulate the common logic
 auto processList =
 [&]( const std::vector<PICKED_SYMBOL>& inputList,
 std::vector<LIB_SYMBOL>& storageList,
 std::vector<LIB_TREE_ITEM*>& resultList )
 {
 storageList.reserve( inputList.size() );
 
 for( const PICKED_SYMBOL& i : inputList )
 {
 LIB_SYMBOL* symbol = m_frame->GetLibSymbol( i.LibId );
 
 if( symbol )
 {
 storageList.emplace_back( *symbol );
 
 for( const std::pair<int, wxString>& fieldDef : i.Fields )
 {
 SCH_FIELD* field = storageList.back().GetFieldById( fieldDef.first );
 
 if( field )
 field->SetText( fieldDef.second );
 }
 
 resultList.push_back( &storageList.back() );
 }
 }
 };
 
 // Sort the already placed list since it is potentially from multiple sessions,
 // but not the most recent list since we want this listed by most recent usage.
 std::sort( aAlreadyPlaced.begin(), aAlreadyPlaced.end(),
 []( PICKED_SYMBOL const& a, PICKED_SYMBOL const& b )
 {
 return a.LibId.GetLibItemName() < b.LibId.GetLibItemName();
 } );
 
 processList( aHistoryList, history_list_storage, history_list );
 processList( aAlreadyPlaced, already_placed_storage, already_placed );
 
 adapter->DoAddLibrary( wxT( "-- " ) + _( "Recently Used" ) + wxT( " --" ), wxEmptyString,
 history_list, false, true );
 
 if( !aHistoryList.empty() )
 adapter->SetPreselectNode( aHistoryList[0].LibId, aHistoryList[0].Unit );
 
 adapter->DoAddLibrary( wxT( "-- " ) + _( "Already Placed" ) + wxT( " --" ), wxEmptyString,
 already_placed, false, true );
 
 const std::vector< wxString > libNicknames = libs->GetLogicalLibs();
 
 if( !loaded )
 {
 if( !adapter->AddLibraries( libNicknames, m_frame ) )
 {
 // loading cancelled by user
 m_acceptHandler();
 }
 }
 
 // -------------------------------------------------------------------------------------
 // Construct the actual panel
 //
 
 wxBoxSizer* sizer = new wxBoxSizer( wxVERTICAL );
 
 // Use a slightly different layout, with a details pane spanning the entire window,
 // if we're not showing footprints.
 if( m_show_footprints )
 {
 m_hsplitter = new wxSplitterWindow( this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
 wxSP_LIVE_UPDATE | wxSP_NOBORDER | wxSP_3DSASH );
 
 //Avoid the splitter window being assigned as the Parent to additional windows
 m_hsplitter->SetExtraStyle( wxWS_EX_TRANSIENT );
 
 sizer->Add( m_hsplitter, 1, wxEXPAND, 5 );
 }
 else
 {
 m_vsplitter = new wxSplitterWindow( this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
 wxSP_LIVE_UPDATE | wxSP_NOBORDER | wxSP_3DSASH );
 
 m_hsplitter = new wxSplitterWindow( m_vsplitter, wxID_ANY, wxDefaultPosition, wxDefaultSize,
 wxSP_LIVE_UPDATE | wxSP_NOBORDER | wxSP_3DSASH );
 
 // Avoid the splitter window being assigned as the parent to additional windows.
 m_vsplitter->SetExtraStyle( wxWS_EX_TRANSIENT );
 m_hsplitter->SetExtraStyle( wxWS_EX_TRANSIENT );
 
 wxPanel* detailsPanel = new wxPanel( m_vsplitter );
 wxBoxSizer* detailsSizer = new wxBoxSizer( wxVERTICAL );
 detailsPanel->SetSizer( detailsSizer );
 
 m_details = new HTML_WINDOW( detailsPanel, wxID_ANY, wxDefaultPosition, wxDefaultSize );
 detailsSizer->Add( m_details, 1, wxEXPAND | wxLEFT | wxRIGHT | wxBOTTOM, 5 );
 detailsPanel->Layout();
 detailsSizer->Fit( detailsPanel );
 
 m_vsplitter->SetSashGravity( 0.5 );
 m_vsplitter->SetMinimumPaneSize( 20 );
 m_vsplitter->SplitHorizontally( m_hsplitter, detailsPanel );
 
 sizer->Add( m_vsplitter, 1, wxEXPAND | wxBOTTOM, 5 );
 }
 
 wxPanel* treePanel = new wxPanel( m_hsplitter );
 wxBoxSizer* treeSizer = new wxBoxSizer( wxVERTICAL );
 treePanel->SetSizer( treeSizer );
 
 m_tree = new LIB_TREE( treePanel, m_showPower ? wxT( "power" ) : wxT( "symbols" ),
 libs, m_adapter, LIB_TREE::FLAGS::ALL_WIDGETS, m_details );
 
 treeSizer->Add( m_tree, 1, wxALL | wxEXPAND, 5 );
 treePanel->Layout();
 treeSizer->Fit( treePanel );
 
 m_adapter->FinishTreeInitialization();
 
 if( m_showPower )
 m_tree->SetSearchString( g_powerSearchString );
 else
 m_tree->SetSearchString( g_symbolSearchString );
 
 m_hsplitter->SetSashGravity( 0.8 );
 m_hsplitter->SetMinimumPaneSize( 20 );
 m_hsplitter->SplitVertically( treePanel, constructRightPanel( m_hsplitter ) );
 
 m_dbl_click_timer = new wxTimer( this );
 m_open_libs_timer = new wxTimer( this );
 
 SetSizer( sizer );
 
 Layout();
 
 Bind( wxEVT_TIMER, &PANEL_SYMBOL_CHOOSER::onCloseTimer, this, m_dbl_click_timer->GetId() );
 Bind( wxEVT_TIMER, &PANEL_SYMBOL_CHOOSER::onOpenLibsTimer, this, m_open_libs_timer->GetId() );
 Bind( EVT_LIBITEM_SELECTED, &PANEL_SYMBOL_CHOOSER::onSymbolSelected, this );
 Bind( EVT_LIBITEM_CHOSEN, &PANEL_SYMBOL_CHOOSER::onSymbolChosen, this );
 Bind( wxEVT_CHAR_HOOK, &PANEL_SYMBOL_CHOOSER::OnChar, this );
 
 if( m_fp_sel_ctrl )
 {
 m_fp_sel_ctrl->Bind( EVT_FOOTPRINT_SELECTED, &PANEL_SYMBOL_CHOOSER::onFootprintSelected,
 this );
 }
 
 if( m_details )
 {
 m_details->Connect( wxEVT_CHAR_HOOK,
 wxKeyEventHandler( PANEL_SYMBOL_CHOOSER::OnDetailsCharHook ),
 nullptr, this );
 }
 
 // Open the user's previously opened libraries on timer expiration.
 // This is done on a timer because we need a gross hack to keep GTK from garbling the
 // display. Must be longer than the search debounce timer.
 m_open_libs_timer->StartOnce( 300 );
}
 
 
PANEL_SYMBOL_CHOOSER::~PANEL_SYMBOL_CHOOSER()
{
 Unbind( wxEVT_TIMER, &PANEL_SYMBOL_CHOOSER::onCloseTimer, this );
 Unbind( EVT_LIBITEM_SELECTED, &PANEL_SYMBOL_CHOOSER::onSymbolSelected, this );
 Unbind( EVT_LIBITEM_CHOSEN, &PANEL_SYMBOL_CHOOSER::onSymbolChosen, this );
 Unbind( wxEVT_CHAR_HOOK, &PANEL_SYMBOL_CHOOSER::OnChar, this );
 
 // Stop the timer during destruction early to avoid potential race conditions (that do happen)
 m_dbl_click_timer->Stop();
 m_open_libs_timer->Stop();
 delete m_dbl_click_timer;
 delete m_open_libs_timer;
 
 if( m_showPower )
 g_powerSearchString = m_tree->GetSearchString();
 else
 g_symbolSearchString = m_tree->GetSearchString();
 
 if( m_fp_sel_ctrl )
 {
 m_fp_sel_ctrl->Unbind( EVT_FOOTPRINT_SELECTED, &PANEL_SYMBOL_CHOOSER::onFootprintSelected,
 this );
 }
 
 if( m_details )
 {
 m_details->Disconnect( wxEVT_CHAR_HOOK,
 wxKeyEventHandler( PANEL_SYMBOL_CHOOSER::OnDetailsCharHook ),
 nullptr, this );
 }
 
 if( EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() ) )
 {
 // Save any changes to column widths, etc.
 m_adapter->SaveSettings();
 
 cfg->m_SymChooserPanel.width = GetParent()->GetSize().x;
 cfg->m_SymChooserPanel.height = GetParent()->GetSize().y;
 
 cfg->m_SymChooserPanel.sash_pos_h = m_hsplitter->GetSashPosition();
 
 if( m_vsplitter )
 cfg->m_SymChooserPanel.sash_pos_v = m_vsplitter->GetSashPosition();
 
 cfg->m_SymChooserPanel.sort_mode = m_tree->GetSortMode();
 }
}
 
 
void PANEL_SYMBOL_CHOOSER::OnChar( wxKeyEvent& aEvent )
{
 if( aEvent.GetKeyCode() == WXK_ESCAPE )
 {
 wxObject* eventSource = aEvent.GetEventObject();
 
 if( wxTextCtrl* textCtrl = dynamic_cast<wxTextCtrl*>( eventSource ) )
 {
 // First escape cancels search string value
 if( textCtrl->GetValue() == m_tree->GetSearchString()
 && !m_tree->GetSearchString().IsEmpty() )
 {
 m_tree->SetSearchString( wxEmptyString );
 return;
 }
 }
 
 m_escapeHandler();
 }
 else
 {
 aEvent.Skip();
 }
}
 
 
wxPanel* PANEL_SYMBOL_CHOOSER::constructRightPanel( wxWindow* aParent )
{
 EDA_DRAW_PANEL_GAL::GAL_TYPE backend;
 
 if( m_frame->GetCanvas() )
 {
 backend = m_frame->GetCanvas()->GetBackend();
 }
 else
 {
 EESCHEMA_SETTINGS* cfg = Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
 backend = (EDA_DRAW_PANEL_GAL::GAL_TYPE) cfg->m_Graphics.canvas_type;
 }
 
 wxPanel* panel = new wxPanel( aParent );
 wxBoxSizer* sizer = new wxBoxSizer( wxVERTICAL );
 
 m_symbol_preview = new SYMBOL_PREVIEW_WIDGET( panel, &m_frame->Kiway(), true, backend );
 m_symbol_preview->SetLayoutDirection( wxLayout_LeftToRight );
 
 if( m_show_footprints )
 {
 FOOTPRINT_LIST* fp_list = FOOTPRINT_LIST::GetInstance( m_frame->Kiway() );
 
 sizer->Add( m_symbol_preview, 11, wxEXPAND | wxALL, 5 );
 
 if ( fp_list )
 {
 if( m_allow_field_edits )
 m_fp_sel_ctrl = new FOOTPRINT_SELECT_WIDGET( m_frame, panel, fp_list, true );
 
 m_fp_preview = new FOOTPRINT_PREVIEW_WIDGET( panel, m_frame->Kiway() );
 m_fp_preview->SetUserUnits( m_frame->GetUserUnits() );
 }
 
 if( m_fp_sel_ctrl )
 sizer->Add( m_fp_sel_ctrl, 0, wxEXPAND | wxLEFT | wxRIGHT | wxBOTTOM, 5 );
 
 if( m_fp_preview )
 sizer->Add( m_fp_preview, 10, wxEXPAND | wxLEFT | wxRIGHT | wxBOTTOM, 5 );
 }
 else
 {
 sizer->Add( m_symbol_preview, 1, wxEXPAND | wxALL, 5 );
 }
 
 panel->SetSizer( sizer );
 panel->Layout();
 sizer->Fit( panel );
 
 return panel;
}
 
 
void PANEL_SYMBOL_CHOOSER::FinishSetup()
{
 if( EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() ) )
 {
 auto horizPixelsFromDU =
 [&]( int x ) -> int
 {
 wxSize sz( x, 0 );
 return GetParent()->ConvertDialogToPixels( sz ).x;
 };
 
 EESCHEMA_SETTINGS::PANEL_SYM_CHOOSER& panelCfg = cfg->m_SymChooserPanel;
 
 int w = panelCfg.width > 40 ? panelCfg.width : horizPixelsFromDU( 440 );
 int h = panelCfg.height > 40 ? panelCfg.height : horizPixelsFromDU( 340 );
 
 GetParent()->SetSize( wxSize( w, h ) );
 GetParent()->Layout();
 
 // We specify the width of the right window (m_symbol_view_panel), because specify
 // the width of the left window does not work as expected when SetSashGravity() is called
 
 if( panelCfg.sash_pos_h < 0 )
 panelCfg.sash_pos_h = horizPixelsFromDU( 220 );
 
 if( panelCfg.sash_pos_v < 0 )
 panelCfg.sash_pos_v = horizPixelsFromDU( 230 );
 
 m_hsplitter->SetSashPosition( panelCfg.sash_pos_h );
 
 if( m_vsplitter )
 m_vsplitter->SetSashPosition( panelCfg.sash_pos_v );
 
 m_adapter->SetSortMode( (LIB_TREE_MODEL_ADAPTER::SORT_MODE) panelCfg.sort_mode );
 }
 
 if( m_fp_preview && m_fp_preview->IsInitialized() )
 {
 // This hides the GAL panel and shows the status label
 m_fp_preview->SetStatusText( wxEmptyString );
 }
 
 if( m_fp_sel_ctrl )
 m_fp_sel_ctrl->Load( m_frame->Kiway(), m_frame->Prj() );
}
 
 
void PANEL_SYMBOL_CHOOSER::OnDetailsCharHook( wxKeyEvent& e )
{
 if( m_details && e.GetKeyCode() == 'C' && e.ControlDown() &&
 !e.AltDown() && !e.ShiftDown() && !e.MetaDown() )
 {
 wxString txt = m_details->SelectionToText();
 wxLogNull doNotLog; // disable logging of failed clipboard actions
 
 if( wxTheClipboard->Open() )
 {
 wxTheClipboard->SetData( new wxTextDataObject( txt ) );
 wxTheClipboard->Flush(); // Allow data to be available after closing KiCad
 wxTheClipboard->Close();
 }
 }
 else
 {
 e.Skip();
 }
}
 
 
void PANEL_SYMBOL_CHOOSER::SetPreselect( const LIB_ID& aPreselect )
{
 m_adapter->SetPreselectNode( aPreselect, 0 );
}
 
 
LIB_ID PANEL_SYMBOL_CHOOSER::GetSelectedLibId( int* aUnit ) const
{
 return m_tree->GetSelectedLibId( aUnit );
}
 
 
void PANEL_SYMBOL_CHOOSER::onCloseTimer( wxTimerEvent& aEvent )
{
 // Hack because of eaten MouseUp event. See PANEL_SYMBOL_CHOOSER::onSymbolChosen
 // for the beginning of this spaghetti noodle.
 
 wxMouseState state = wxGetMouseState();
 
 if( state.LeftIsDown() )
 {
 // Mouse hasn't been raised yet, so fire the timer again. Otherwise the
 // purpose of this timer is defeated.
 m_dbl_click_timer->StartOnce( PANEL_SYMBOL_CHOOSER::DBLCLICK_DELAY );
 }
 else
 {
 m_acceptHandler();
 }
}
 
 
void PANEL_SYMBOL_CHOOSER::onOpenLibsTimer( wxTimerEvent& aEvent )
{
 if( EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() ) )
 m_adapter->OpenLibs( cfg->m_LibTree.open_libs );
}
 
 
void PANEL_SYMBOL_CHOOSER::showFootprintFor( LIB_ID const& aLibId )
{
 if( !m_fp_preview || !m_fp_preview->IsInitialized() )
 return;
 
 LIB_SYMBOL* symbol = nullptr;
 
 try
 {
 symbol = PROJECT_SCH::SchSymbolLibTable( &m_frame->Prj() )->LoadSymbol( aLibId );
 }
 catch( const IO_ERROR& ioe )
 {
 wxLogError( _( "Error loading symbol %s from library '%s'." ) + wxS( "\n%s" ),
 aLibId.GetLibItemName().wx_str(),
 aLibId.GetLibNickname().wx_str(),
 ioe.What() );
 }
 
 if( !symbol )
 return;
 
 SCH_FIELD* fp_field = symbol->GetFieldById( FOOTPRINT_FIELD );
 wxString fp_name = fp_field ? fp_field->GetFullText() : wxString( "" );
 
 showFootprint( fp_name );
}
 
 
void PANEL_SYMBOL_CHOOSER::showFootprint( wxString const& aFootprint )
{
 if( !m_fp_preview || !m_fp_preview->IsInitialized() )
 return;
 
 if( aFootprint == wxEmptyString )
 {
 m_fp_preview->SetStatusText( _( "No footprint specified" ) );
 }
 else
 {
 LIB_ID lib_id;
 
 if( lib_id.Parse( aFootprint ) == -1 && lib_id.IsValid() )
 {
 m_fp_preview->ClearStatus();
 m_fp_preview->DisplayFootprint( lib_id );
 }
 else
 {
 m_fp_preview->SetStatusText( _( "Invalid footprint specified" ) );
 }
 }
}
 
 
void PANEL_SYMBOL_CHOOSER::populateFootprintSelector( LIB_ID const& aLibId )
{
 if( !m_fp_sel_ctrl )
 return;
 
 m_fp_sel_ctrl->ClearFilters();
 
 LIB_SYMBOL* symbol = nullptr;
 
 if( aLibId.IsValid() )
 {
 try
 {
 symbol = PROJECT_SCH::SchSymbolLibTable( &m_frame->Prj() )->LoadSymbol( aLibId );
 }
 catch( const IO_ERROR& ioe )
 {
 wxLogError( _( "Error loading symbol %s from library '%s'." ) + wxS( "\n%s" ),
 aLibId.GetLibItemName().wx_str(),
 aLibId.GetLibNickname().wx_str(),
 ioe.What() );
 }
 }
 
 if( symbol != nullptr )
 {
 int pinCount = symbol->GetPins( 0 /* all units */, 1 /* single bodyStyle */ ).size();
 SCH_FIELD* fp_field = symbol->GetFieldById( FOOTPRINT_FIELD );
 wxString fp_name = fp_field ? fp_field->GetFullText() : wxString( "" );
 
 m_fp_sel_ctrl->FilterByPinCount( pinCount );
 m_fp_sel_ctrl->FilterByFootprintFilters( symbol->GetFPFilters(), true );
 m_fp_sel_ctrl->SetDefaultFootprint( fp_name );
 m_fp_sel_ctrl->UpdateList();
 m_fp_sel_ctrl->Enable();
 }
 else
 {
 m_fp_sel_ctrl->UpdateList();
 m_fp_sel_ctrl->Disable();
 }
}
 
 
void PANEL_SYMBOL_CHOOSER::onFootprintSelected( wxCommandEvent& aEvent )
{
 m_fp_override = aEvent.GetString();
 
 alg::delete_if( m_field_edits, []( std::pair<int, wxString> const& i )
 {
 return i.first == FOOTPRINT_FIELD;
 } );
 
 m_field_edits.emplace_back( std::make_pair( FOOTPRINT_FIELD, m_fp_override ) );
 
 showFootprint( m_fp_override );
}
 
 
void PANEL_SYMBOL_CHOOSER::onSymbolSelected( wxCommandEvent& aEvent )
{
 LIB_TREE_NODE* node = m_tree->GetCurrentTreeNode();
 
 if( node && node->m_LibId.IsValid() )
 {
 m_symbol_preview->DisplaySymbol( node->m_LibId, node->m_Unit );
 
 if( !node->m_Footprint.IsEmpty() )
 showFootprint( node->m_Footprint );
 else
 showFootprintFor( node->m_LibId );
 
 populateFootprintSelector( node->m_LibId );
 }
 else
 {
 m_symbol_preview->SetStatusText( _( "No symbol selected" ) );
 
 if( m_fp_preview && m_fp_preview->IsInitialized() )
 m_fp_preview->SetStatusText( wxEmptyString );
 
 populateFootprintSelector( LIB_ID() );
 }
}
 
 
void PANEL_SYMBOL_CHOOSER::onSymbolChosen( wxCommandEvent& aEvent )
{
 if( m_tree->GetSelectedLibId().IsValid() )
 {
 // Got a selection. We can't just end the modal dialog here, because wx leaks some events
 // back to the parent window (in particular, the MouseUp following a double click).
 //
 // NOW, here's where it gets really fun. wxTreeListCtrl eats MouseUp. This isn't really
 // feasible to bypass without a fully custom wxDataViewCtrl implementation, and even then
 // might not be fully possible (docs are vague). To get around this, we use a one-shot
 // timer to schedule the dialog close.
 //
 // See PANEL_SYMBOL_CHOOSER::onCloseTimer for the other end of this spaghetti noodle.
 m_dbl_click_timer->StartOnce( PANEL_SYMBOL_CHOOSER::DBLCLICK_DELAY );
 }
}