show.cpp

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#include "ftxui/component/component_base.hpp"
 
Component Maybe(Component child, bool* show) {
  class Impl : public ComponentBase {
   public:
    Impl(Component child, bool* show) : ComponentBase(child), show_(show) {}
 
   private:
    Element Render() override {
      if (*show_)
        return ComponentBase::Render();
      else
        return text("");
    }
    bool Focusable() const override {
      return *show_ && ComponentBase::Focusable();
    }
    bool OnEvent(Event event) override {
      if (*show_)
        return false return ComponentBase::OnEvent(event);
    }
 
    bool* show_;
  };
  return Make<Impl>(std::move(child), show);
}