mirror of
https://github.com/danbulant/cushy
synced 2026-06-19 06:21:15 +00:00
e70e92726c
Refs #98 This refactor overhauls the reactive system to move all the reactive methods to traits. The side effect of this change is that now DynamicReader's API is the same as Dynamic's API, but because it only implements Source<T>, DynamicReader does not offer any mutation functions. While it's unfortunate to have more traits to include to use Cushy, this seems like the best option, and it offers a path to try to integrate this into the tuple ForEach/MapEach traits. Unfortunately, my attempt at doing those in this set of changes led to issues specifying generic associated lifetimes for the DynamicGuard. But, I was also in the middle of this larger refactoring, so it might be that a fresh attempt will succeed.
102 lines
3.2 KiB
Rust
102 lines
3.2 KiB
Rust
use std::collections::HashMap;
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use cushy::value::{Dynamic, MapEach, Source};
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use cushy::widget::{Children, MakeWidget};
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use cushy::widgets::input::InputValue;
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use cushy::Run;
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#[derive(Debug, Clone, Eq, PartialEq)]
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pub struct Contact {
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pub id: u64,
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pub first_name: String,
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pub last_name: String,
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pub title: String,
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}
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fn main() -> cushy::Result {
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let initial_contacts = vec![
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Contact {
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id: 0,
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first_name: String::from("John"),
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last_name: String::from("Doe"),
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title: String::from("Chef"),
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},
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Contact {
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id: 1,
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first_name: String::from("Jane"),
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last_name: String::from("Smith"),
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title: String::from("Doctor"),
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},
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];
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let db = Dynamic::new(
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initial_contacts
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.into_iter()
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.map(|contact| (contact.id, contact))
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.collect::<HashMap<_, _>>(),
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);
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let selected_contact = Dynamic::new(None::<u64>);
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let contact_list = db.map_each({
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let selected_contact = selected_contact.clone();
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move |contacts| {
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let mut entries = contacts
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.iter()
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.map(|(id, contact)| (contact.last_name.clone(), contact.first_name.clone(), *id))
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.collect::<Vec<_>>();
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entries.sort();
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entries
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.into_iter()
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.map(|(last, first, id)| {
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selected_contact
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.new_select(Some(id), format!("{first} {last}").align_left())
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.make_widget()
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})
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.collect::<Children>()
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}
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});
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let editing_contact = (&selected_contact, &db).map_each({
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let db = db.clone();
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move |(selected, contacts)| {
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selected
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.map(|id| edit_contact_form(&contacts[&id], &db).make_widget())
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.unwrap_or_else(|| "Select a contact".centered().make_widget())
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}
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});
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contact_list
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.into_rows()
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.vertical_scroll()
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.and(editing_contact.expand())
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.into_columns()
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.run()
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}
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fn edit_contact_form(contact: &Contact, db: &Dynamic<HashMap<u64, Contact>>) -> impl MakeWidget {
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let first = Dynamic::new(contact.first_name.clone());
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let last = Dynamic::new(contact.last_name.clone());
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let title = Dynamic::new(contact.title.clone());
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"First Name"
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.and(first.clone().into_input())
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.and("Last Name")
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.and(last.clone().into_input())
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.and("Title")
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.and(title.clone().into_input())
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.and(
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"Save"
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.into_button()
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.on_click({
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let contact_id = contact.id;
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let db = db.clone();
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move |()| {
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let mut db = db.lock();
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let contact = db.get_mut(&contact_id).expect("missing contact");
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contact.first_name = first.get();
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contact.last_name = last.get();
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contact.title = title.get();
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}
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})
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.into_default()
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.align_right(),
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)
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.into_rows()
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}
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