# The main frame, the parent of all.

package Slic3r::GUI::MainFrame;
use strict;
use warnings;
use utf8;

use File::Basename qw(basename dirname);
use FindBin;
use List::Util qw(min first);
use Slic3r::Geometry qw(X Y);
use Wx qw(:frame :bitmap :id :misc :notebook :panel :sizer :menu :dialog :filedialog
    :font :icon wxTheApp);
use Wx::Event qw(EVT_CLOSE EVT_COMMAND EVT_MENU EVT_NOTEBOOK_PAGE_CHANGED);
use base 'Wx::Frame';

use Wx::Locale gettext => 'L';

our $qs_last_input_file;
our $qs_last_output_file;
our $last_config;

# Events to be sent from a C++ Tab implementation:
# 1) To inform about a change of a configuration value.
our $VALUE_CHANGE_EVENT    = Wx::NewEventType;
# 2) To inform about a preset selection change or a "modified" status change.
our $PRESETS_CHANGED_EVENT = Wx::NewEventType;

sub new {
    my ($class, %params) = @_;
    
    my $self = $class->SUPER::new(undef, -1, $Slic3r::FORK_NAME . ' - ' . $Slic3r::VERSION, wxDefaultPosition, wxDefaultSize, wxDEFAULT_FRAME_STYLE);
    Slic3r::GUI::set_main_frame($self);
    if ($^O eq 'MSWin32') {
        # Load the icon either from the exe, or from the ico file.
        my $iconfile = Slic3r::decode_path($FindBin::Bin) . '\slic3r.exe';
        $iconfile = Slic3r::var("Slic3r.ico") unless -f $iconfile;
        $self->SetIcon(Wx::Icon->new($iconfile, wxBITMAP_TYPE_ICO));
    } else {
        $self->SetIcon(Wx::Icon->new(Slic3r::var("Slic3r_128px.png"), wxBITMAP_TYPE_PNG));        
    }
    
    # store input params
    # If set, the "Controller" tab for the control of the printer over serial line and the serial port settings are hidden.
    $self->{no_controller} = $params{no_controller};
    $self->{no_plater} = $params{no_plater};
    $self->{loaded} = 0;
    $self->{lang_ch_event} = $params{lang_ch_event};
    $self->{preferences_event} = $params{preferences_event};

    # initialize tabpanel and menubar
    $self->_init_tabpanel;
    $self->_init_menubar;
    
    # set default tooltip timer in msec
    # SetAutoPop supposedly accepts long integers but some bug doesn't allow for larger values
    # (SetAutoPop is not available on GTK.)
    eval { Wx::ToolTip::SetAutoPop(32767) };
    
    # initialize status bar
    $self->{statusbar} = Slic3r::GUI::ProgressStatusBar->new($self, -1);
    $self->{statusbar}->SetStatusText(L("Version ").$Slic3r::VERSION.L(" - Remember to check for updates at http://github.com/prusa3d/slic3r/releases"));
    $self->SetStatusBar($self->{statusbar});
    
    $self->{loaded} = 1;
    
    # initialize layout
    {
        my $sizer = Wx::BoxSizer->new(wxVERTICAL);
        $sizer->Add($self->{tabpanel}, 1, wxEXPAND);
        $sizer->SetSizeHints($self);
        $self->SetSizer($sizer);
        $self->Fit;
        $self->SetMinSize([760, 490]);
        $self->SetSize($self->GetMinSize);
        wxTheApp->restore_window_pos($self, "main_frame");
        $self->Show;
        $self->Layout;
    }
    
    # declare events
    EVT_CLOSE($self, sub {
        my (undef, $event) = @_;
        if ($event->CanVeto && !Slic3r::GUI::check_unsaved_changes) {
            $event->Veto;
            return;
        }
        # save window size
        wxTheApp->save_window_pos($self, "main_frame");
        # Save the slic3r.ini. Usually the ini file is saved from "on idle" callback,
        # but in rare cases it may not have been called yet.
        wxTheApp->{app_config}->save;
        # propagate event
        $event->Skip;
    });

    $self->update_ui_from_settings;

    return $self;
}

sub _init_tabpanel {
    my ($self) = @_;
    
    $self->{tabpanel} = my $panel = Wx::Notebook->new($self, -1, wxDefaultPosition, wxDefaultSize, wxNB_TOP | wxTAB_TRAVERSAL);
    Slic3r::GUI::set_tab_panel($panel);

    EVT_NOTEBOOK_PAGE_CHANGED($self, $self->{tabpanel}, sub {
        my $panel = $self->{tabpanel}->GetCurrentPage;
        $panel->OnActivate if $panel->can('OnActivate');
    });
    
    if (!$self->{no_plater}) {
        $panel->AddPage($self->{plater} = Slic3r::GUI::Plater->new($panel), L("Plater"));
        if (!$self->{no_controller}) {
            $panel->AddPage($self->{controller} = Slic3r::GUI::Controller->new($panel), L("Controller"));
        }
    }
    
    #TODO this is an example of a Slic3r XS interface call to add a new preset editor page to the main view.
    # The following event is emited by the C++ Tab implementation on config value change.
    EVT_COMMAND($self, -1, $VALUE_CHANGE_EVENT, sub {
        my ($self, $event) = @_;
        my $str = $event->GetString;
        my ($opt_key, $name) = ($str =~ /(.*) (.*)/);
        #print "VALUE_CHANGE_EVENT: ", $opt_key, "\n";
        my $tab = Slic3r::GUI::get_preset_tab($name);
        my $config = $tab->get_config;
        if ($self->{plater}) {
            $self->{plater}->on_config_change($config); # propagate config change events to the plater
            if ($opt_key eq 'extruders_count'){
                my $value = $event->GetInt();
                $self->{plater}->on_extruders_change($value);
            }
        }
        # don't save while loading for the first time
        $self->config->save($Slic3r::GUI::autosave) if $Slic3r::GUI::autosave && $self->{loaded};        
    });
    # The following event is emited by the C++ Tab implementation on preset selection,
    # or when the preset's "modified" status changes.
    EVT_COMMAND($self, -1, $PRESETS_CHANGED_EVENT, sub {
        my ($self, $event) = @_;
        my $tab_name = $event->GetString;

        my $tab = Slic3r::GUI::get_preset_tab($tab_name);
        if ($self->{plater}) {
            # Update preset combo boxes (Print settings, Filament, Printer) from their respective tabs.
            my $presets = $tab->get_presets;
            if (defined $presets){
                my $reload_dependent_tabs = $tab->get_dependent_tabs;
                $self->{plater}->update_presets($tab_name, $reload_dependent_tabs, $presets);
                if ($tab_name eq 'printer') {
                    # Printer selected at the Printer tab, update "compatible" marks at the print and filament selectors.
                    for my $tab_name_other (qw(print filament)) {
                        # If the printer tells us that the print or filament preset has been switched or invalidated,
                        # refresh the print or filament tab page. Otherwise just refresh the combo box.
                        my $update_action = ($reload_dependent_tabs && (first { $_ eq $tab_name_other } (@{$reload_dependent_tabs}))) 
                            ? 'load_current_preset' : 'update_tab_ui';
                        $self->{options_tabs}{$tab_name_other}->$update_action;
                    }
                    # Update the controller printers.
                    $self->{controller}->update_presets($presets) if $self->{controller};
                }
                $self->{plater}->on_config_change($tab->get_config);
            }
        }
    });
    Slic3r::GUI::create_preset_tabs($self->{no_controller}, $VALUE_CHANGE_EVENT, $PRESETS_CHANGED_EVENT);
    $self->{options_tabs} = {};
    for my $tab_name (qw(print filament printer)) {
        $self->{options_tabs}{$tab_name} = Slic3r::GUI::get_preset_tab("$tab_name");
    }
    
    if ($self->{plater}) {
        $self->{plater}->on_select_preset(sub {
            my ($group, $name) = @_;
            $self->{options_tabs}{$group}->select_preset($name);
        });
        # load initial config
        my $full_config = wxTheApp->{preset_bundle}->full_config;
        $self->{plater}->on_config_change($full_config);
        # Show a correct number of filament fields.
        $self->{plater}->on_extruders_change(int(@{$full_config->nozzle_diameter}));
    }
}

sub _init_menubar {
    my ($self) = @_;
    
    # File menu
    my $fileMenu = Wx::Menu->new;
    {
        wxTheApp->append_menu_item($fileMenu, L("Open STL/OBJ/AMF…\tCtrl+O"), L('Open a model'), sub {
            $self->{plater}->add if $self->{plater};
        }, undef, undef); #'brick_add.png');
        $self->_append_menu_item($fileMenu, L("&Load Config…\tCtrl+L"), L('Load exported configuration file'), sub {
            $self->load_config_file;
        }, undef, 'plugin_add.png');
        $self->_append_menu_item($fileMenu, L("&Export Config…\tCtrl+E"), L('Export current configuration to file'), sub {
            $self->export_config;
        }, undef, 'plugin_go.png');
        $self->_append_menu_item($fileMenu, L("&Load Config Bundle…"), L('Load presets from a bundle'), sub {
            $self->load_configbundle;
        }, undef, 'lorry_add.png');
        $self->_append_menu_item($fileMenu, L("&Export Config Bundle…"), L('Export all presets to file'), sub {
            $self->export_configbundle;
        }, undef, 'lorry_go.png');
        $fileMenu->AppendSeparator();
        my $repeat;
        $self->_append_menu_item($fileMenu, L("Q&uick Slice…\tCtrl+U"), L('Slice a file into a G-code'), sub {
            wxTheApp->CallAfter(sub {
                $self->quick_slice;
                $repeat->Enable(defined $Slic3r::GUI::MainFrame::last_input_file);
            });
        }, undef, 'cog_go.png');
        $self->_append_menu_item($fileMenu, L("Quick Slice and Save &As…\tCtrl+Alt+U"), L('Slice a file into a G-code, save as'), sub {
            wxTheApp->CallAfter(sub {
                $self->quick_slice(save_as => 1);
                $repeat->Enable(defined $Slic3r::GUI::MainFrame::last_input_file);
            });
        }, undef, 'cog_go.png');
        $repeat = $self->_append_menu_item($fileMenu, L("&Repeat Last Quick Slice\tCtrl+Shift+U"), L('Repeat last quick slice'), sub {
            wxTheApp->CallAfter(sub {
                $self->quick_slice(reslice => 1);
            });
        }, undef, 'cog_go.png');
        $repeat->Enable(0);
        $fileMenu->AppendSeparator();
        $self->_append_menu_item($fileMenu, L("Slice to SV&G…\tCtrl+G"), L('Slice file to a multi-layer SVG'), sub {
            $self->quick_slice(save_as => 1, export_svg => 1);
        }, undef, 'shape_handles.png');
        $self->{menu_item_reslice_now} = $self->_append_menu_item(
            $fileMenu, L("(&Re)Slice Now\tCtrl+S"), L('Start new slicing process'), 
            sub { $self->reslice_now; }, undef, 'shape_handles.png');
        $fileMenu->AppendSeparator();
        $self->_append_menu_item($fileMenu, L("Repair STL file…"), L('Automatically repair an STL file'), sub {
            $self->repair_stl;
        }, undef, 'wrench.png');
        $fileMenu->AppendSeparator();
        $self->_append_menu_item($fileMenu, L("&Quit"), L('Quit Slic3r'), sub {
            $self->Close(0);
        }, wxID_EXIT);
    }
    
    # Plater menu
    unless ($self->{no_plater}) {
        my $plater = $self->{plater};
        
        $self->{plater_menu} = Wx::Menu->new;
        $self->_append_menu_item($self->{plater_menu}, L("Export G-code..."), L('Export current plate as G-code'), sub {
            $plater->export_gcode;
        }, undef, 'cog_go.png');
        $self->_append_menu_item($self->{plater_menu}, L("Export plate as STL..."), L('Export current plate as STL'), sub {
            $plater->export_stl;
        }, undef, 'brick_go.png');
        $self->_append_menu_item($self->{plater_menu}, L("Export plate as AMF..."), L('Export current plate as AMF'), sub {
            $plater->export_amf;
        }, undef, 'brick_go.png');
        $self->_append_menu_item($self->{plater_menu}, L("Export plate as 3MF..."), L('Export current plate as 3MF'), sub {
            $plater->export_3mf;
        }, undef, 'brick_go.png');
        
        $self->{object_menu} = $self->{plater}->object_menu;
        $self->on_plater_selection_changed(0);
    }
    
    # Window menu
    my $windowMenu = Wx::Menu->new;
    {
        my $tab_offset = 0;
        if (!$self->{no_plater}) {
            $self->_append_menu_item($windowMenu, L("Select &Plater Tab\tCtrl+1"), L('Show the plater'), sub {
                $self->select_tab(0);
            }, undef, 'application_view_tile.png');
            $tab_offset += 1;
        }
        if (!$self->{no_controller}) {
            $self->_append_menu_item($windowMenu, L("Select &Controller Tab\tCtrl+T"), L('Show the printer controller'), sub {
                $self->select_tab(1);
            }, undef, 'printer_empty.png');
            $tab_offset += 1;
        }
        if ($tab_offset > 0) {
            $windowMenu->AppendSeparator();
        }
        $self->_append_menu_item($windowMenu, L("Select P&rint Settings Tab\tCtrl+2"), L('Show the print settings'), sub {
            $self->select_tab($tab_offset+0);
        }, undef, 'cog.png');
        $self->_append_menu_item($windowMenu, L("Select &Filament Settings Tab\tCtrl+3"), L('Show the filament settings'), sub {
            $self->select_tab($tab_offset+1);
        }, undef, 'spool.png');
        $self->_append_menu_item($windowMenu, L("Select Print&er Settings Tab\tCtrl+4"), L('Show the printer settings'), sub {
            $self->select_tab($tab_offset+2);
        }, undef, 'printer_empty.png');
    }

    # View menu
    if (!$self->{no_plater}) {
        $self->{viewMenu} = Wx::Menu->new;
        # \xA0 is a non-breaing space. It is entered here to spoil the automatic accelerators,
        # as the simple numeric accelerators spoil all numeric data entry.
        # The camera control accelerators are captured by 3DScene Perl module instead.
        my $accel = ($^O eq 'MSWin32') ? sub { $_[0] . "\t\xA0" . $_[1] } : sub { $_[0] };
        $self->_append_menu_item($self->{viewMenu}, $accel->(L('Iso'),    '0'), L('Iso View')    , sub { $self->select_view('iso'    ); });
        $self->_append_menu_item($self->{viewMenu}, $accel->(L('Top'),    '1'), L('Top View')    , sub { $self->select_view('top'    ); });
        $self->_append_menu_item($self->{viewMenu}, $accel->(L('Bottom'), '2'), L('Bottom View') , sub { $self->select_view('bottom' ); });
        $self->_append_menu_item($self->{viewMenu}, $accel->(L('Front'),  '3'), L('Front View')  , sub { $self->select_view('front'  ); });
        $self->_append_menu_item($self->{viewMenu}, $accel->(L('Rear'),   '4'), L('Rear View')   , sub { $self->select_view('rear'   ); });
        $self->_append_menu_item($self->{viewMenu}, $accel->(L('Left'),   '5'), L('Left View')   , sub { $self->select_view('left'   ); });
        $self->_append_menu_item($self->{viewMenu}, $accel->(L('Right'),  '6'), L('Right View')  , sub { $self->select_view('right'  ); });
    }
    
    # Help menu
    my $helpMenu = Wx::Menu->new;
    {
        $self->_append_menu_item($helpMenu, L("Prusa 3D Drivers"), L('Open the Prusa3D drivers download page in your browser'), sub {
            Wx::LaunchDefaultBrowser('http://www.prusa3d.com/drivers/');
        });
        $self->_append_menu_item($helpMenu, L("Prusa Edition Releases"), L('Open the Prusa Edition releases page in your browser'), sub {
            Wx::LaunchDefaultBrowser('http://github.com/prusa3d/slic3r/releases');
        });
#        my $versioncheck = $self->_append_menu_item($helpMenu, "Check for &Updates...", 'Check for new Slic3r versions', sub {
#            wxTheApp->check_version(1);
#        });
#        $versioncheck->Enable(wxTheApp->have_version_check);
        $self->_append_menu_item($helpMenu, L("Slic3r &Website"), L('Open the Slic3r website in your browser'), sub {
            Wx::LaunchDefaultBrowser('http://slic3r.org/');
        });
        $self->_append_menu_item($helpMenu, L("Slic3r &Manual"), L('Open the Slic3r manual in your browser'), sub {
            Wx::LaunchDefaultBrowser('http://manual.slic3r.org/');
        });
        $helpMenu->AppendSeparator();
        $self->_append_menu_item($helpMenu, L("System Info"), L('Show system information'), sub {
            wxTheApp->system_info;
        });
        $self->_append_menu_item($helpMenu, L("Report an Issue"), L('Report an issue on the Slic3r Prusa Edition'), sub {
            Wx::LaunchDefaultBrowser('http://github.com/prusa3d/slic3r/issues/new');
        });
        $self->_append_menu_item($helpMenu, L("&About Slic3r"), L('Show about dialog'), sub {
            Slic3r::GUI::about;
        });
    }

    # menubar
    # assign menubar to frame after appending items, otherwise special items
    # will not be handled correctly
    {
        my $menubar = Wx::MenuBar->new;
        $menubar->Append($fileMenu, L("&File"));
        $menubar->Append($self->{plater_menu}, L("&Plater")) if $self->{plater_menu};
        $menubar->Append($self->{object_menu}, L("&Object")) if $self->{object_menu};
        $menubar->Append($windowMenu, L("&Window"));
        $menubar->Append($self->{viewMenu}, L("&View")) if $self->{viewMenu};
        # Add a configuration  menu.
        Slic3r::GUI::add_config_menu($menubar, $self->{preferences_event}, $self->{lang_ch_event});
        $menubar->Append($helpMenu, L("&Help"));
        $self->SetMenuBar($menubar);
    }
}

sub is_loaded {
    my ($self) = @_;
    return $self->{loaded};
}

# Selection of a 3D object changed on the platter.
sub on_plater_selection_changed {
    my ($self, $have_selection) = @_;
    return if !defined $self->{object_menu};
    $self->{object_menu}->Enable($_->GetId, $have_selection)
        for $self->{object_menu}->GetMenuItems;
}

# To perform the "Quck Slice", "Quick Slice and Save As", "Repeat last Quick Slice" and "Slice to SVG".
sub quick_slice {
    my ($self, %params) = @_;
    
    my $progress_dialog;
    eval {
        # validate configuration
        my $config = wxTheApp->{preset_bundle}->full_config();
        $config->validate;
        
        # select input file
        my $input_file;
        if (!$params{reslice}) {
            my $dialog = Wx::FileDialog->new($self, L('Choose a file to slice (STL/OBJ/AMF/3MF/PRUSA):'), 
                wxTheApp->{app_config}->get_last_dir, "", 
                &Slic3r::GUI::MODEL_WILDCARD, wxFD_OPEN | wxFD_FILE_MUST_EXIST);
            if ($dialog->ShowModal != wxID_OK) {
                $dialog->Destroy;
                return;
            }
            $input_file = $dialog->GetPaths;
            $dialog->Destroy;
            $qs_last_input_file = $input_file unless $params{export_svg};
        } else {
            if (!defined $qs_last_input_file) {
                Wx::MessageDialog->new($self, L("No previously sliced file."),
                                       L('Error'), wxICON_ERROR | wxOK)->ShowModal();
                return;
            }
            if (! -e $qs_last_input_file) {
                Wx::MessageDialog->new($self, L("Previously sliced file (").$qs_last_input_file.L(") not found."),
                                       L('File Not Found'), wxICON_ERROR | wxOK)->ShowModal();
                return;
            }
            $input_file = $qs_last_input_file;
        }
        my $input_file_basename = basename($input_file);
        wxTheApp->{app_config}->update_skein_dir(dirname($input_file));
        
        my $print_center;
        {
            my $bed_shape = Slic3r::Polygon->new_scale(@{$config->bed_shape});
            $print_center = Slic3r::Pointf->new_unscale(@{$bed_shape->bounding_box->center});
        }
        
        my $sprint = Slic3r::Print::Simple->new(
            print_center    => $print_center,
            status_cb       => sub {
                my ($percent, $message) = @_;
                $progress_dialog->Update($percent, "$message…");
            },
        );
        
        # keep model around
        my $model = Slic3r::Model->read_from_file($input_file);
        
        $sprint->apply_config($config);
        $sprint->set_model($model);
        
        # Copy the names of active presets into the placeholder parser.
        wxTheApp->{preset_bundle}->export_selections_pp($sprint->placeholder_parser);

        # select output file
        my $output_file;
        if ($params{reslice}) {
            $output_file = $qs_last_output_file if defined $qs_last_output_file;
        } elsif ($params{save_as}) {
            # The following line may die if the output_filename_format template substitution fails.
            $output_file = $sprint->output_filepath;
            $output_file =~ s/\.[gG][cC][oO][dD][eE]$/.svg/ if $params{export_svg};
            my $dlg = Wx::FileDialog->new($self, L('Save ') . ($params{export_svg} ? L('SVG') : L('G-code')) . L(' file as:'),
                wxTheApp->{app_config}->get_last_output_dir(dirname($output_file)),
                basename($output_file), $params{export_svg} ? &Slic3r::GUI::FILE_WILDCARDS->{svg} : &Slic3r::GUI::FILE_WILDCARDS->{gcode}, wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
            if ($dlg->ShowModal != wxID_OK) {
                $dlg->Destroy;
                return;
            }
            $output_file = $dlg->GetPath;
            $qs_last_output_file = $output_file unless $params{export_svg};
            wxTheApp->{app_config}->update_last_output_dir(dirname($output_file));
            $dlg->Destroy;
        }
        
        # show processbar dialog
        $progress_dialog = Wx::ProgressDialog->new(L('Slicing…'), L("Processing ").$input_file_basename."…", 
            100, $self, 0);
        $progress_dialog->Pulse;
        
        {
            my @warnings = ();
            local $SIG{__WARN__} = sub { push @warnings, $_[0] };
            
            $sprint->output_file($output_file);
            if ($params{export_svg}) {
                $sprint->export_svg;
            } else {
                $sprint->export_gcode;
            }
            $sprint->status_cb(undef);
            Slic3r::GUI::warning_catcher($self)->($_) for @warnings;
        }
        $progress_dialog->Destroy;
        undef $progress_dialog;
        
        my $message = $input_file_basename.L(" was successfully sliced.");
        wxTheApp->notify($message);
        Wx::MessageDialog->new($self, $message, L('Slicing Done!'), 
            wxOK | wxICON_INFORMATION)->ShowModal;
    };
    Slic3r::GUI::catch_error($self, sub { $progress_dialog->Destroy if $progress_dialog });
}

sub reslice_now {
    my ($self) = @_;
    $self->{plater}->reslice if $self->{plater};
}

sub repair_stl {
    my $self = shift;
    
    my $input_file;
    {
        my $dialog = Wx::FileDialog->new($self, L('Select the STL file to repair:'),
            wxTheApp->{app_config}->get_last_dir, "",
            &Slic3r::GUI::FILE_WILDCARDS->{stl}, wxFD_OPEN | wxFD_FILE_MUST_EXIST);
        if ($dialog->ShowModal != wxID_OK) {
            $dialog->Destroy;
            return;
        }
        $input_file = $dialog->GetPaths;
        $dialog->Destroy;
    }
    
    my $output_file = $input_file;
    {
        $output_file =~ s/\.[sS][tT][lL]$/_fixed.obj/;
        my $dlg = Wx::FileDialog->new($self, L("Save OBJ file (less prone to coordinate errors than STL) as:"), dirname($output_file),
            basename($output_file), &Slic3r::GUI::FILE_WILDCARDS->{obj}, wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
        if ($dlg->ShowModal != wxID_OK) {
            $dlg->Destroy;
            return undef;
        }
        $output_file = $dlg->GetPath;
        $dlg->Destroy;
    }
    
    my $tmesh = Slic3r::TriangleMesh->new;
    $tmesh->ReadSTLFile($input_file);
    $tmesh->repair;
    $tmesh->WriteOBJFile($output_file);
    Slic3r::GUI::show_info($self, L("Your file was repaired."), L("Repair"));
}

sub export_config {
    my $self = shift;
    # Generate a cummulative configuration for the selected print, filaments and printer.    
    my $config = wxTheApp->{preset_bundle}->full_config();
    # Validate the cummulative configuration.
    eval { $config->validate; };
    Slic3r::GUI::catch_error($self) and return;
    # Ask user for the file name for the config file.
    my $dlg = Wx::FileDialog->new($self, L('Save configuration as:'),
        $last_config ? dirname($last_config) : wxTheApp->{app_config}->get_last_dir,
        $last_config ? basename($last_config) : "config.ini",
        &Slic3r::GUI::FILE_WILDCARDS->{ini}, wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
    my $file = ($dlg->ShowModal == wxID_OK) ? $dlg->GetPath : undef;
    $dlg->Destroy;
    if (defined $file) {
        wxTheApp->{app_config}->update_config_dir(dirname($file));
        $last_config = $file;
        $config->save($file);
    }
}

# Load a config file containing a Print, Filament & Printer preset.
sub load_config_file {
    my ($self, $file) = @_;
    if (!$file) {
        return unless Slic3r::GUI::check_unsaved_changes;
        my $dlg = Wx::FileDialog->new($self, L('Select configuration to load:'), 
            $last_config ? dirname($last_config) : wxTheApp->{app_config}->get_last_dir,
            "config.ini",
            'INI files (*.ini, *.gcode)|*.ini;*.INI;*.gcode;*.g', wxFD_OPEN | wxFD_FILE_MUST_EXIST);
        return unless $dlg->ShowModal == wxID_OK;
        $file = $dlg->GetPaths;
        $dlg->Destroy;
    }
    eval { wxTheApp->{preset_bundle}->load_config_file($file); };
    # Dont proceed further if the config file cannot be loaded.
    return if Slic3r::GUI::catch_error($self);
    $_->load_current_preset for (values %{$self->{options_tabs}});
    wxTheApp->{app_config}->update_config_dir(dirname($file));
    $last_config = $file;
}

sub export_configbundle {
    my ($self) = @_;
    return unless Slic3r::GUI::check_unsaved_changes;
    # validate current configuration in case it's dirty
    eval { wxTheApp->{preset_bundle}->full_config->validate; };
    Slic3r::GUI::catch_error($self) and return;
    # Ask user for a file name.
    my $dlg = Wx::FileDialog->new($self, L('Save presets bundle as:'),
        $last_config ? dirname($last_config) : wxTheApp->{app_config}->get_last_dir,
        "Slic3r_config_bundle.ini", 
        &Slic3r::GUI::FILE_WILDCARDS->{ini}, wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
    my $file = ($dlg->ShowModal == wxID_OK) ? $dlg->GetPath : undef;
    $dlg->Destroy;
    if (defined $file) {
        # Export the config bundle.
        wxTheApp->{app_config}->update_config_dir(dirname($file));
        eval { wxTheApp->{preset_bundle}->export_configbundle($file); };
        Slic3r::GUI::catch_error($self) and return;
    }
}

# Loading a config bundle with an external file name used to be used
# to auto-install a config bundle on a fresh user account,
# but that behavior was not documented and likely buggy.
sub load_configbundle {
    my ($self, $file, $reset_user_profile) = @_;
    return unless Slic3r::GUI::check_unsaved_changes;
    if (!$file) {
        my $dlg = Wx::FileDialog->new($self, L('Select configuration to load:'), 
            $last_config ? dirname($last_config) : wxTheApp->{app_config}->get_last_dir,
            "config.ini", 
            &Slic3r::GUI::FILE_WILDCARDS->{ini}, wxFD_OPEN | wxFD_FILE_MUST_EXIST);
        return unless $dlg->ShowModal == wxID_OK;
        $file = $dlg->GetPaths;
        $dlg->Destroy;
    }
    
    wxTheApp->{app_config}->update_config_dir(dirname($file));

    my $presets_imported = 0;
    eval { $presets_imported = wxTheApp->{preset_bundle}->load_configbundle($file); };
    Slic3r::GUI::catch_error($self) and return;

    # Load the currently selected preset into the GUI, update the preset selection box.
    foreach my $tab (values %{$self->{options_tabs}}) {
        $tab->load_current_preset;
    }
    
    my $message = sprintf L("%d presets successfully imported."), $presets_imported;
    Slic3r::GUI::show_info($self, $message);
}

# Load a provied DynamicConfig into the Print / Filament / Printer tabs, thus modifying the active preset.
# Also update the platter with the new presets.
sub load_config {
    my ($self, $config) = @_;
    $_->load_config($config) foreach values %{$self->{options_tabs}};
    $self->{plater}->on_config_change($config) if $self->{plater};
}

sub select_tab {
    my ($self, $tab) = @_;
    $self->{tabpanel}->SetSelection($tab);
}

# Set a camera direction, zoom to all objects.
sub select_view {
    my ($self, $direction) = @_;
    if (! $self->{no_plater}) {
        $self->{plater}->select_view($direction);
    }
}

sub _append_menu_item {
    my ($self, $menu, $string, $description, $cb, $id, $icon) = @_;
    $id //= &Wx::NewId();
    my $item = $menu->Append($id, $string, $description);
    $self->_set_menu_item_icon($item, $icon);
    EVT_MENU($self, $id, $cb);
    return $item;
}

sub _set_menu_item_icon {
    my ($self, $menuItem, $icon) = @_;
    # SetBitmap was not available on OS X before Wx 0.9927
    if ($icon && $menuItem->can('SetBitmap')) {
        $menuItem->SetBitmap(Wx::Bitmap->new(Slic3r::var($icon), wxBITMAP_TYPE_PNG));
    }
}

# Called after the Preferences dialog is closed and the program settings are saved.
# Update the UI based on the current preferences.
sub update_ui_from_settings {
    my ($self) = @_;
    $self->{menu_item_reslice_now}->Enable(! wxTheApp->{app_config}->get("background_processing"));
    $self->{plater}->update_ui_from_settings if ($self->{plater});
    for my $tab_name (qw(print filament printer)) {
        $self->{options_tabs}{$tab_name}->update_ui_from_settings;
    }
}

1;