monorepo/fitnesstrax/app/src/components/weight.rs

/*
Copyright 2023, Savanni D'Gerinel <savanni@luminescent-dreams.com>

This file is part of FitnessTrax.

FitnessTrax is free software: you can redistribute it and/or modify it under the terms of the GNU
General Public License as published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

FitnessTrax is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License along with FitnessTrax. If not, see <https://www.gnu.org/licenses/>.
*/

use crate::components::{ParseError, TextEntry};
use dimensioned::si;
use gtk::prelude::*;

pub struct Weight {
    label: gtk::Label,
}

impl Weight {
    pub fn new(weight: Option<si::Kilogram<f64>>) -> Self {
        let label = gtk::Label::builder()
            .css_classes(["card", "weight-view"])
            .can_focus(true)
            .build();

        match weight {
            Some(w) => label.set_text(&format!("{:?}", w)),
            None => label.set_text("No weight recorded"),
        }

        Self { label }
    }

    pub fn widget(&self) -> gtk::Widget {
        self.label.clone().upcast()
    }
}

pub fn weight_editor<OnUpdate>(
    weight: Option<si::Kilogram<f64>>,
    on_update: OnUpdate,
) -> TextEntry<si::Kilogram<f64>>
where
    OnUpdate: Fn(si::Kilogram<f64>) + 'static,
{
    TextEntry::new(
        "0 kg",
        weight,
        |val: &si::Kilogram<f64>| val.to_string(),
        move |v: &str| {
            let new_weight = v.parse::<f64>().map(|w| w * si::KG).map_err(|_| ParseError);
            match new_weight {
                Ok(w) => {
                    on_update(w);
                    Ok(w)
                }
                Err(err) => Err(err),
            }
        },
    )
}