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