ConfigWizard: Set enable conditions for "Finish" and "Select all standard" buttons

* Disable "Finish" button, when no one printer is selected or "Configuration Manager" page is active
* Disable "Select all standard" button, when no one printer page is added or "Configuration Manager" page is active
+ Check and install missing materials after reload configurations from archive
+ Activate Vendor page, if no one printer is selected from loaded archive

src/slic3r/GUI/ConfigWizard.cpp

@@ -678,6 +678,9 @@ PageUpdateManager::PageUpdateManager(ConfigWizard* parent_in)
             is_active = true;
         else if (is_active && parent_in->IsShown()) {
             if (manager->has_selections()) {
+                if (wizard_p()->is_first_start)
+                    wizard_p()->is_first_start = false;
+
                 wxBusyCursor wait;
                 if (manager->set_selected_repositories())
                     wizard_p()->set_config_updated_from_archive(true);
@@ -2619,13 +2622,12 @@ void ConfigWizard::priv::load_pages()
 
     }
 
-    if (former_active != page_update_manager)
+    if (former_active != page_update_manager) {
-        index->go_to(former_active);   // Will restore the active item/page if possible
+        if (pages_fff.empty() && pages_msla.empty() && !repositories.empty())
-
+            index->go_to(repositories[0].vendors_page); // Activate Vendor page, if no one printer is selected
-    // set visibility for "Select all..."
+        else
-    btn_sel_all->Show(!pages_fff.empty() || !pages_msla.empty());
+            index->go_to(former_active);   // Will restore the active item/page if possible
-    // Set enabling fo "Finish" button -> there should to be selected at least one printer
+    }
-    btn_finish->Enable(any_fff_selected || any_sla_selected || custom_printer_selected || custom_printer_in_bundle);
 
     q->Layout();
 // This Refresh() is needed to avoid ugly artifacts after printer selection, when no one vendor was selected from the very beginnig
@@ -3050,6 +3052,22 @@ void ConfigWizard::priv::on_3rdparty_install(const VendorProfile *vendor, bool i
     load_pages();
 }
 
+bool ConfigWizard::priv::can_finish()
+{
+    if (index->active_page() == page_update_manager)
+        return false;
+    // Set enabling fo "Finish" button -> there should to be selected at least one printer
+    return any_fff_selected || any_sla_selected || custom_printer_selected || custom_printer_in_bundle;
+}
+
+bool ConfigWizard::priv::can_select_all()
+{
+    if (index->active_page() == page_update_manager)
+        return false;
+    // set enabling for "Select all..." -> there should to be exist at least one printer page
+    return !pages_fff.empty() || !pages_msla.empty();
+}
+
 bool ConfigWizard::priv::on_bnt_finish()
 {
     wxBusyCursor wait;
@@ -3746,6 +3764,10 @@ void ConfigWizard::priv::load_pages_from_archive()
         }
     }
 
+    if (only_sla_mode && !repositories.empty()) {
+        only_sla_mode = false;
+    }
+
     if (!only_sla_mode) {
         add_page(page_custom = new PageCustom(q));
         custom_printer_selected = page_custom->custom_wanted();
@@ -3754,7 +3776,9 @@ void ConfigWizard::priv::load_pages_from_archive()
     any_sla_selected = check_sla_selected();
     any_fff_selected = !only_sla_mode && check_fff_selected();
 
+    check_and_install_missing_materials(T_ANY);
     update_materials(T_ANY);
+
     if (!page_filaments && !only_sla_mode) {
         add_page(page_filaments = new PageMaterials(q, &filaments,
             _L("Filament Profiles Selection"), _L("Filaments"), _L("Type:")));
@@ -3891,6 +3915,11 @@ ConfigWizard::ConfigWizard(wxWindow *parent)
             this->EndModal(wxID_OK);
     });
 
+    p->btn_finish->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt)
+    {
+        evt.Enable(p->can_finish());
+    });
+
     p->btn_sel_all->Bind(wxEVT_BUTTON, [this](const wxCommandEvent &) {
  //       p->any_sla_selected = true;
         p->load_pages();
@@ -3903,6 +3932,11 @@ ConfigWizard::ConfigWizard(wxWindow *parent)
         p->index->go_to(p->page_mode);
     });
 
+    p->btn_sel_all->Bind(wxEVT_UPDATE_UI, [this](wxUpdateUIEvent& evt)
+    {
+        evt.Enable(p->can_select_all());
+    });
+
     p->index->Bind(EVT_INDEX_PAGE, [this](const wxCommandEvent &) {
         const bool is_last = p->index->active_is_last();
         p->btn_next->Show(! is_last || p->is_first_start);

src/slic3r/GUI/ConfigWizard_private.hpp

@@ -611,8 +611,8 @@ struct ConfigWizard::priv
     PresetAliases aliases_fff;    // Map of alias to material presets
     PresetAliases aliases_sla;    // Map of alias to material presets
     std::unique_ptr<DynamicPrintConfig> custom_config;           // Backing for custom printer definition
-    bool any_fff_selected;        // Used to decide whether to display Filaments page
+    bool any_fff_selected { false };        // Used to decide whether to display Filaments page
-    bool any_sla_selected;        // Used to decide whether to display SLA Materials page
+    bool any_sla_selected { false };        // Used to decide whether to display SLA Materials page
     bool custom_printer_selected { false }; // New custom printer is requested
     bool custom_printer_in_bundle { false }; // Older custom printer already exists when wizard starts
     // Set to true if there are none FFF printers on the main FFF page. If true, only SLA printers are shown (not even custom printers)
@@ -691,6 +691,8 @@ struct ConfigWizard::priv
     void select_default_materials_for_printer_models(Technology technology, const std::set<const VendorProfile::PrinterModel*> &printer_models);
     void on_3rdparty_install(const VendorProfile *vendor, bool install);
 
+    bool can_finish();
+    bool can_select_all();
     bool on_bnt_finish();
     bool check_and_install_missing_materials(Technology technology, const std::string &only_for_model_id = std::string());
     bool apply_config(AppConfig *app_config, PresetBundle *preset_bundle, const PresetUpdater *updater, bool& apply_keeped_changes);