examples/component/maybe.cpp

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// Copyright 2020 Arthur Sonzogni. All rights reserved.
// 本源代码的使用受MIT许可证的约束，该许可证可在LICENSE文件中找到。
#include <string>  // for string, allocator, basic_string
#include <vector>  // for vector
 
#include "ftxui/component/captured_mouse.hpp"  // for ftxui
#include "ftxui/component/component.hpp"  // for operator|, Maybe, Checkbox, Radiobox, Renderer, Vertical
#include "ftxui/component/component_base.hpp"      // for Component
#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
#include "ftxui/dom/elements.hpp"  // for Element, border, color, operator|, text
#include "ftxui/screen/color.hpp"  // for Color, Color::Red
 
using namespace ftxui;
 
int main() {
  std::vector<std::string> entries = {
      "entry 1",
      "entry 2",
      "entry 3",
  };
  int menu_1_selected = 0;
  int menu_2_selected = 0;
 
  bool menu_1_show = false;
  bool menu_2_show = false;
 
  auto layout = Container::Vertical({
      Checkbox("Show menu_1", &menu_1_show),
      Radiobox(&entries, &menu_1_selected) | border | Maybe(&menu_1_show),
      Checkbox("Show menu_2", &menu_2_show),
      Radiobox(&entries, &menu_2_selected) | border | Maybe(&menu_2_show),
 
      Renderer([] {
        return text("You found the secret combinaison!") | color(Color::Red);
      }) | Maybe([&] { return menu_1_selected == 1 && menu_2_selected == 2; }),
  });
 
  auto screen = ScreenInteractive::TerminalOutput();
  screen.Loop(layout);
}