EnumSelector.hpp

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#pragma once
 
#include <functional>
#include <map>
#include <string>
 
#include <glm/glm.hpp>
#include "imgui.h"
 
namespace shkyera {
 
template <typename EnumType>
class EnumSelector {
 public:
  EnumSelector(const std::string& title, EnumType value, const std::map<EnumType, std::string>& options)
      : _title(title), _value(value), _options(options) {}
 
  void setUpdateCallback(std::function<void(EnumType value)> callback) { _updateCallback = callback; }
 
  void draw() {
    EnumType oldValue = _value;
    ImGui::PushItemWidth(50);
    ImGui::TextUnformatted(_title.c_str());
    ImGui::PopItemWidth();
 
    ImGui::SameLine(130);
    ImGui::PushItemWidth(190);
 
    if (ImGui::BeginCombo((std::string("##" + _title + "EnumSelectorCombo").c_str()), _options.at(_value).c_str())) {
      for (const auto& [value, name] : _options) {
        if (ImGui::Selectable(name.c_str())) {
          _value = value;
        }
      }
 
      ImGui::EndCombo();
    }
 
    ImGui::PopItemWidth();
 
    if (oldValue != _value) {
      if (_updateCallback) {
        _updateCallback(_value);
      }
    }
  }
 
 private:
  std::string _title;
  EnumType _value;
  std::map<EnumType, std::string> _options;
  std::function<void(EnumType value)> _updateCallback;
};
 
}  // namespace shkyera