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https://github.com/ArthurSonzogni/FTXUI.git
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42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
#include "ftxui/component/toggle.hpp"
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#include <algorithm>
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namespace ftxui {
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Element Toggle::Render() {
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bool is_focused = Focused();
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Elements children;
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for (size_t i = 0; i < entries.size(); ++i) {
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// Separator.
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if (i != 0)
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children.push_back(separator());
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// Entry.
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auto style = (selected != int(i))
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? normal_style
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: is_focused ? focused_style : selected_style;
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auto focused = (selected != int(i)) ? nothing : is_focused ? focus : select;
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children.push_back(text(entries[i]) | style | focused);
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}
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return hbox(std::move(children));
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}
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bool Toggle::OnEvent(Event event) {
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int old_selected = selected;
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if (event == Event::ArrowLeft || event == Event::Character('h'))
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selected--;
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if (event == Event::ArrowRight || event == Event::Character('l'))
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selected++;
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if (event == Event::Tab && entries.size())
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selected = (selected + 1) % entries.size();
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if (event == Event::TabReverse && entries.size())
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selected = (selected + entries.size() - 1) % entries.size();
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selected = std::max(0, std::min(int(entries.size()) - 1, selected));
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return old_selected != selected;
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}
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} // namespace ftxui
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