fix temporary pages

src/graphics/ui/elements/Menu.cpp

@@ -13,8 +13,10 @@ bool Menu::has(const std::string& name) {
            pageSuppliers.find(name) != pageSuppliers.end();
 }
 
-void Menu::addPage(const std::string& name, const std::shared_ptr<UINode>& panel) {
-    pages[name] = Page {name, panel};
+void Menu::addPage(
+    const std::string& name, const std::shared_ptr<UINode>& panel, bool temporal
+) {
+    pages[name] = Page {name, panel, temporal};
 }
 
 void Menu::removePage(const std::string& name) {
@@ -25,26 +27,26 @@ void Menu::addSupplier(const std::string& name, const supplier<std::shared_ptr<U
     pageSuppliers[name] = pageSupplier;
 }
 
-std::shared_ptr<UINode> Menu::fetchPage(const std::string& name) {
+Page Menu::fetchPage(const std::string& name) {
     auto found = pages.find(name);
     if (found == pages.end()) {
         auto supplier = pageSuppliers.find(name);
         if (supplier == pageSuppliers.end()) {
             if (pagesLoader) {
-                return pagesLoader(name);
+                return {name, pagesLoader(name), false};
             }
-            return nullptr;
+            return {};
         } else {
-            return supplier->second();
+            return {name, supplier->second(), false};
             // supplied pages caching is not implemented
         }
     } else {
-        return found->second.panel;
+        return found->second;
     }
 }
 
 void Menu::setPage(const std::string &name, bool history) {
-    Page page {name, fetchPage(name)};
+    Page page = fetchPage(name);
     if (page.panel == nullptr) {
         throw std::runtime_error("no page found");
     }
@@ -54,7 +56,7 @@ void Menu::setPage(const std::string &name, bool history) {
 void Menu::setPage(Page page, bool history) {
     if (current.panel) {
         Container::remove(current.panel);
-        if (history) {
+        if (history && !current.temporal) {
             pageStack.push(current);
         }
     }
@@ -68,10 +70,10 @@ void Menu::back() {
         return;
     Page page = pageStack.top();
     pageStack.pop();
-    
+
     auto updated = fetchPage(page.name);
-    if (updated) {
-        page.panel = updated;
+    if (updated.panel) {
+        page.panel = updated.panel;
     }
 
     setPage(page, false);

src/graphics/ui/elements/Menu.hpp

@@ -8,6 +8,7 @@ namespace gui {
     struct Page {
         std::string name;
         std::shared_ptr<UINode> panel;
+        bool temporal = false;
     };
 
     using page_loader_func = std::function<std::shared_ptr<UINode>(const std::string& name)>;
@@ -31,14 +32,21 @@ namespace gui {
         /// @param history previous page will not be saved in history if false
         void setPage(const std::string &name, bool history=true);
         void setPage(Page page, bool history=true);
-        void addPage(const std::string& name, const std::shared_ptr<UINode>& panel);
+        void addPage(
+            const std::string& name,
+            const std::shared_ptr<UINode>& panel,
+            bool temporal = false
+        );
         void removePage(const std::string& name);
-        std::shared_ptr<UINode> fetchPage(const std::string& name);
+        Page fetchPage(const std::string& name);
 
         /// @brief Add page supplier used if page is not found
         /// @param name page name
         /// @param pageSupplier page supplier function
-        void addSupplier(const std::string& name, const supplier<std::shared_ptr<UINode>>& pageSupplier);
+        void addSupplier(
+            const std::string& name,
+            const supplier<std::shared_ptr<UINode>>& pageSupplier
+        );
 
         /// @brief Page loader is called if accessed page is not found 
         void setPageLoader(page_loader_func loader);

src/graphics/ui/gui_util.cpp

@@ -36,12 +36,12 @@ void guiutil::alert(
 
     auto menu = engine.getGUI()->getMenu();
     runnable on_hidden_final = [on_hidden, menu, &engine]() {
+        menu->removePage("<alert>");
         if (on_hidden) {
             on_hidden();
         } else {
             menu->back();
         }
-        menu->removePage("<alert>");
     };
     
     auto label = std::make_shared<Label>(text);
@@ -63,7 +63,7 @@ void guiutil::alert(
         on_hidden_final();
         return true;
     }));
-    menu->addPage("<alert>", panel);
+    menu->addPage("<alert>", panel, true);
     menu->setPage("<alert>");
 }
 
@@ -87,21 +87,21 @@ void guiutil::confirm(
     auto menu = engine.getGUI()->getMenu();
 
     runnable on_confirm_final = [on_confirm, menu, &engine]() {
+        menu->removePage("<confirm>");
         if (on_confirm) {
             on_confirm();
         } else {
             menu->back();
         }
-        menu->removePage("<confirm>");
     };
 
     runnable on_deny_final = [on_deny, menu, &engine]() {
+        menu->removePage("<confirm>");
         if (on_deny) {
             on_deny();
         } else {
             menu->back();
         }
-        menu->removePage("<confirm>");
     };
 
     subpanel->add(std::make_shared<Button>(yestext, glm::vec4(8.f), [=](GUI*){
@@ -123,7 +123,7 @@ void guiutil::confirm(
     }));
 
     panel->refresh();
-    menu->addPage("<confirm>", panel);
+    menu->addPage("<confirm>", panel, true);
     menu->setPage("<confirm>");
 }
 
@@ -166,6 +166,6 @@ void guiutil::confirm_with_memo(
     panel->add(subpanel);
 
     panel->refresh();
-    menu->addPage("<confirm>", panel);
+    menu->addPage("<confirm>", panel, true);
     menu->setPage("<confirm>");
 }