collapsible.cpp

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#include <string>   // for string
#include <utility>  // for move
 
#include "ftxui/component/component.hpp"  // for Checkbox, Maybe, Make, Vertical, Collapsible
#include "ftxui/component/component_base.hpp"  // for Component, ComponentBase
#include "ftxui/component/component_options.hpp"  // for CheckboxOption
#include "ftxui/util/ref.hpp"                     // for Ref, ConstStringRef
 
namespace ftxui {
 
/// @brief A collapsible component. It display a checkbox with an arrow. Once
/// activated, the children is displayed.
/// @params label The label of the checkbox.
/// @params child The children to display.
/// @params show Hold the state about whether the children is displayed or not.
///
/// ### Example
/// ```cpp
/// auto component = Collapsible("Show details", details);
/// ```
///
/// ### Output
/// ```
///
/// ▼ Show details
/// <details component>
/// ```
Component Collapsible(ConstStringRef label, Component child, Ref<bool> show) {
  class Impl : public ComponentBase {
   public:
    Impl(ConstStringRef label, Component child, Ref<bool> show)
        : label_(label), show_(std::move(show)) {
      CheckboxOption opt;
      opt.style_checked = "▼ ";
      opt.style_unchecked = "▶ ";
      Add(Container::Vertical({
          Checkbox(label_, show_.operator->(), opt),
          Maybe(std::move(child), show_.operator->()),
      }));
    }
    ConstStringRef label_;
    Ref<bool> show_;
  };
 
  return Make<Impl>(label, std::move(child), std::move(show));
}
 
}  // namespace ftxui
 
// Copyright 2021 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.