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66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
#include <functional> // for function
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#include <utility> // for move
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#include "ftxui/dom/elements.hpp" // for Decorator, Element, Elements, operator|, nothing
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namespace ftxui {
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namespace {
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Decorator compose(Decorator a, Decorator b) {
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return [a = std::move(a), b = std::move(b)](Element element) {
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return b(a(std::move(element)));
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};
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}
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} // namespace
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/// @brief A decoration doing absolutely nothing.
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/// @ingroup dom
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Element nothing(Element element) {
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return element;
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}
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/// @brief Compose two decorator into one.
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/// @ingroup dom
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///
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/// ### Example
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///
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/// ```cpp
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/// auto decorator = bold | blink;
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/// ```
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Decorator operator|(Decorator a, Decorator b) {
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return compose(a, b);
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}
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/// @brief From a set of element, apply a decorator to every elements.
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/// @return the set of decorated element.
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/// @ingroup dom
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Elements operator|(Elements elements, Decorator decorator) {
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Elements output;
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for (auto& it : elements)
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output.push_back(std::move(it) | decorator);
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return output;
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}
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/// @brief From an element, apply a decorator.
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/// @return the decorated element.
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/// @ingroup dom
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///
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/// ### Example
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///
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/// Both of these are equivalent:
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/// ```cpp
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/// bold(text(L"Hello"));
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/// ```
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/// ```cpp
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/// text(L"Hello") | bold;
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/// ```
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Element operator|(Element element, Decorator decorator) {
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return decorator(std::move(element));
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}
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} // namespace ftxui
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// Copyright 2020 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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