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feat: Dropdown select menu. (#214)

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Dom
 - `vscroll_indicator`. Show a scrollback indicator on the right.

Component
 - `Maybe`: Display an component conditionnally based on a boolean.
 - `Dropdown`: A dropdown select list.

This address:
https://github.com/ArthurSonzogni/FTXUI/issues/204
This commit is contained in:
Arthur Sonzogni
2021-09-26 15:19:17 +02:00
parent 0d1a7ffe6d
commit c5ef0c7fb5
12 changed files with 282 additions and 6 deletions
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48
examples/component/dropdown.cpp Normal file
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#include <functional> // for function
#include <iostream> // for basic_ostream::operator<<, operator<<, endl, basic_ostream, basic_ostream<>::__ostream_type, cout, ostream
#include <string> // for string, basic_string, allocator
#include <vector> // for vector
#include "ftxui/component/captured_mouse.hpp" // for ftxui
#include "ftxui/component/component.hpp" // for Menu
#include "ftxui/component/component_options.hpp" // for MenuOption
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
int main(int argc, const char* argv[]) {
using namespace ftxui;
std::vector<std::string> entries = {
"tribute", "clearance", "ally", "bend", "electronics",
"module", "era", "cultural", "sniff", "nationalism",
"negotiation", "deliver", "figure", "east",
"tribute", "clearance", "ally", "bend", "electronics",
"module", "era", "cultural", "sniff", "nationalism",
"negotiation", "deliver", "figure", "east",
"tribute", "clearance", "ally", "bend", "electronics",
"module", "era", "cultural", "sniff", "nationalism",
"negotiation", "deliver", "figure", "east",
};
int selected_1 = 0;
int selected_2 = 0;
int selected_3 = 0;
int selected_4 = 0;
auto layout = Container::Vertical({
Container::Horizontal({
Dropdown(&entries, &selected_1),
Dropdown(&entries, &selected_2),
}),
Container::Horizontal({
Dropdown(&entries, &selected_3),
Dropdown(&entries, &selected_4),
}),
});
auto screen = ScreenInteractive::FitComponent();
screen.Loop(layout);
}
// Copyright 2020 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.