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

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/*
Copyright 2024, 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/>.
*/
//! A Widget container for a single components
use glib::Object;
use gtk::{prelude::*, subclass::prelude::*};
use std::cell::RefCell;
pub struct SingletonPrivate {
widget: RefCell<gtk::Widget>,
}
impl Default for SingletonPrivate {
fn default() -> Self {
Self {
widget: RefCell::new(gtk::Label::new(None).upcast()),
}
}
}
#[glib::object_subclass]
impl ObjectSubclass for SingletonPrivate {
const NAME: &'static str = "Singleton";
type Type = Singleton;
type ParentType = gtk::Box;
}
impl ObjectImpl for SingletonPrivate {}
impl WidgetImpl for SingletonPrivate {}
impl BoxImpl for SingletonPrivate {}
glib::wrapper! {
/// The Singleton component contains exactly one child widget. The swap function makes it easy
/// to handle the job of swapping that child out for a different one.
pub struct Singleton(ObjectSubclass<SingletonPrivate>) @extends gtk::Box, gtk::Widget;
}
impl Default for Singleton {
fn default() -> Self {
let s: Self = Object::builder().build();
s.append(&*s.imp().widget.borrow());
s
}
}
impl Singleton {
pub fn swap(&self, new_widget: &impl IsA<gtk::Widget>) {
let new_widget = new_widget.clone().upcast();
self.remove(&*self.imp().widget.borrow());
self.append(&new_widget);
*self.imp().widget.borrow_mut() = new_widget;
}
}
pub trait SingletonImpl: WidgetImpl + BoxImpl {}
unsafe impl<T: SingletonImpl> IsSubclassable<T> for Singleton {}