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|
use iced::widget::{
center, column, combo_box, scrollable, text, vertical_space,
};
use iced::{Center, Element, Fill};
pub fn main() -> iced::Result {
iced::run("Combo Box - Iced", Example::update, Example::view)
}
struct Example {
languages: combo_box::State<Language>,
selected_language: Option<Language>,
text: String,
}
#[derive(Debug, Clone, Copy)]
enum Message {
Selected(Language),
OptionHovered(Language),
Closed,
}
impl Example {
fn new() -> Self {
Self {
languages: combo_box::State::new(Language::ALL.to_vec()),
selected_language: None,
text: String::new(),
}
}
fn update(&mut self, message: Message) {
match message {
Message::Selected(language) => {
self.selected_language = Some(language);
self.text = language.hello().to_string();
}
Message::OptionHovered(language) => {
self.text = language.hello().to_string();
}
Message::Closed => {
self.text = self
.selected_language
.map(|language| language.hello().to_string())
.unwrap_or_default();
}
}
}
fn view(&self) -> Element<Message> {
let combo_box = combo_box(
&self.languages,
"Type a language...",
self.selected_language.as_ref(),
Message::Selected,
)
.on_option_hovered(Message::OptionHovered)
.on_close(Message::Closed)
.width(250);
let content = column![
text(&self.text),
"What is your language?",
combo_box,
vertical_space().height(150),
]
.width(Fill)
.align_x(Center)
.spacing(10);
center(scrollable(content)).into()
}
}
impl Default for Example {
fn default() -> Self {
Example::new()
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
pub enum Language {
Danish,
#[default]
English,
French,
German,
Italian,
Portuguese,
Spanish,
Other,
}
impl Language {
const ALL: [Language; 8] = [
Language::Danish,
Language::English,
Language::French,
Language::German,
Language::Italian,
Language::Portuguese,
Language::Spanish,
Language::Other,
];
fn hello(&self) -> &str {
match self {
Language::Danish => "Halloy!",
Language::English => "Hello!",
Language::French => "Salut!",
Language::German => "Hallo!",
Language::Italian => "Ciao!",
Language::Portuguese => "Olá!",
Language::Spanish => "¡Hola!",
Language::Other => "... hello?",
}
}
}
impl std::fmt::Display for Language {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"{}",
match self {
Language::Danish => "Danish",
Language::English => "English",
Language::French => "French",
Language::German => "German",
Language::Italian => "Italian",
Language::Portuguese => "Portuguese",
Language::Spanish => "Spanish",
Language::Other => "Some other language",
}
)
}
}
|
