add nf7::gui::Config

common/gui_config.hh

@@ -0,0 +1,59 @@
+#include <string>
+#include <type_traits>
+
+#include <imgui.h>
+#include <imgui_stdlib.h>
+
+#include "nf7.hh"
+
+#include "common/generic_memento.hh"
+
+
+namespace nf7::gui {
+
+template <typename T>
+concept ConfigData = requires (T& x) {
+  { x.Stringify() } -> std::convertible_to<std::string>;
+  x.Parse(std::string {});
+};
+
+template <ConfigData T>
+void Config(nf7::GenericMemento<T>& mem) noexcept {
+  static std::string text_;
+  static std::string msg_;
+  static bool mod_;
+
+  if (ImGui::IsWindowAppearing()) {
+    text_ = mem->Stringify();
+    msg_  = "";
+    mod_  = false;
+  }
+
+  mod_ |= ImGui::InputTextMultiline("##config", &text_);
+
+  ImGui::BeginDisabled(!mod_);
+  if (ImGui::Button("apply")) {
+    try {
+      mem->Parse(text_);
+      mem.Commit();
+      msg_  = "";
+      mod_  = false;
+    } catch (nf7::Exception& e) {
+      msg_ = e.msg();
+    }
+  }
+  ImGui::EndDisabled();
+  ImGui::SameLine();
+  if (ImGui::Button("restore")) {
+    text_ = mem->Stringify();
+    msg_  = "";
+    mod_  = false;
+  }
+
+  if (msg_.size()) {
+    ImGui::Bullet();
+    ImGui::TextUnformatted(msg_.c_str());
+  }
+}
+
+}  // namespace nf7::gui

common/gui_popup.cc

@@ -45,31 +45,4 @@ void IOSocketListPopup::Update() noexcept {
   }
 }
 
-
-void ConfigPopup::Update() noexcept {
-  if (nf7::gui::Popup::Begin()) {
-    ImGui::TextUnformatted(name());
-    ImGui::InputTextMultiline("##text", &text_);
-
-    if (ImGui::Button("apply")) {
-      try {
-        onApply(text_);
-        msg_ = "OK";
-      } catch (nf7::Exception& e) {
-        msg_ = e.msg();
-      }
-    }
-    ImGui::SameLine();
-    if (ImGui::Button("reset")) {
-      text_ = onOpen();
-    }
-
-    if (msg_.size()) {
-      ImGui::Bullet();
-      ImGui::TextUnformatted(msg_.c_str());
-    }
-    ImGui::EndPopup();
-  }
-}
-
 }  // namespace nf7::gui

common/gui_popup.hh

@@ -64,26 +64,4 @@ class IOSocketListPopup final :
   std::string is_, os_;
 };
 
-
-class ConfigPopup final :
-    public nf7::FileBase::Feature, private Popup {
- public:
-  ConfigPopup(const char* name = "ConfigPopup") noexcept : Popup(name) {
-  }
-
-  void Open() noexcept {
-    msg_  = "";
-    text_ = onOpen();
-    nf7::gui::Popup::Open();
-  }
-  void Update() noexcept override;
-
-  std::function<std::string()> onOpen;
-  std::function<void(const std::string&)> onApply;
-
- private:
-  std::string msg_;
-  std::string text_;
-};
-
 }  // namespace nf7::gui