73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include "component.hpp"
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#include <sstream>
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namespace katja
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{
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PackageListBase::PackageListBase(const std::string& title, const std::vector<package_identifier>& packages)
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: title(title), packages(packages)
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{
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}
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ftxui::Element PackageListBase::OnRender()
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{
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std::vector<ftxui::Element> lines;
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for (const auto& package_identifier : this->packages)
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{
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auto line = ftxui::text(package_identifier.to_string()) | color(ftxui::Color::SkyBlue2);
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lines.push_back(line);
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}
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if (this->selected.has_value() && this->selected.value() < lines.size())
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{
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lines[this->selected.value()] |= ftxui::focus;
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}
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std::stringstream summary;
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summary << title << '(' << packages.size() << ')';
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return ftxui::window(ftxui::text(summary.str()), ftxui::vbox(lines) | ftxui::yframe);
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}
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bool PackageListBase::OnEvent(ftxui::Event event)
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{
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if (event == ftxui::Event::ArrowDown)
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{
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if (!this->selected.has_value() && !this->packages.empty())
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{
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this->selected = std::make_optional<std::size_t>(0);
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}
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else if (this->selected.has_value() && this->selected.value() + 1 < this->packages.size())
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{
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this->selected = std::make_optional<std::size_t>(this->selected.value() + 1);
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}
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return true;
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}
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else if (event == ftxui::Event::ArrowUp)
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{
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if (!this->selected.has_value() && !this->packages.empty())
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{
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this->selected = std::make_optional<std::size_t>(0);
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}
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else if (this->selected.has_value()
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&& this->selected.value() < this->packages.size()
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&& this->selected.value() > 0)
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{
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this->selected = std::make_optional<std::size_t>(this->selected.value() - 1);
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}
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return true;
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}
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return false;
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}
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ftxui::Component PackageList(const std::string& title, const std::vector<package_identifier>& packages)
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{
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return ftxui::Make<PackageListBase>(title, packages);
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}
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}
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