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https://github.com/ArthurSonzogni/FTXUI.git
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61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
// Copyright 2021 Arthur Sonzogni. All rights reserved.
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// Use of this source code is governed by the MIT license that can be found in
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// the LICENSE file.
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#include <functional> // for function
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#include <utility> // for move
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#include "ftxui/component/component.hpp" // for Checkbox, Maybe, Make, Vertical, Collapsible
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#include "ftxui/component/component_base.hpp" // for Component, ComponentBase
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#include "ftxui/component/component_options.hpp" // for CheckboxOption, EntryState
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#include "ftxui/dom/elements.hpp" // for operator|=, text, hbox, Element, bold, inverted
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#include "ftxui/util/ref.hpp" // for Ref, ConstStringRef
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namespace ftxui {
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/// @brief A collapsible component. It display a checkbox with an arrow. Once
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/// activated, the children is displayed.
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/// @param label The label of the checkbox.
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/// @param child The children to display.
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/// @param show Hold the state about whether the children is displayed or not.
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///
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/// ### Example
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/// ```cpp
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/// auto component = Collapsible("Show details", details);
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/// ```
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///
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/// ### Output
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/// ```
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///
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/// ▼ Show details
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/// <details component>
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/// ```
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// NOLINTNEXTLINE
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Component Collapsible(ConstStringRef label, Component child, Ref<bool> show) {
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class Impl : public ComponentBase {
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public:
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Impl(ConstStringRef label, Component child, Ref<bool> show) : show_(show) {
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CheckboxOption opt;
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opt.transform = [](EntryState s) { // NOLINT
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auto prefix = text(s.state ? "▼ " : "▶ "); // NOLINT
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auto t = text(s.label);
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if (s.active) {
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t |= bold;
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}
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if (s.focused) {
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t |= inverted;
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}
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return hbox({prefix, t});
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};
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Add(Container::Vertical({
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Checkbox(std::move(label), show_.operator->(), opt),
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Maybe(std::move(child), show_.operator->()),
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}));
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}
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Ref<bool> show_;
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};
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return Make<Impl>(std::move(label), std::move(child), show);
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}
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} // namespace ftxui
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