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/* add_view.rs
 *
 * Copyright 2020-2021 Rasmus Thomsen <oss@cogitri.dev>
 *
 * This program 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.
 *
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */

use adw::subclass::prelude::*;
use gtk::glib::{self, prelude::*};
mod imp {
    use adw::{prelude::*, subclass::prelude::*};
    use gtk::glib;
    use once_cell::unsync::OnceCell;
    use std::cell::Cell;

    #[derive(Debug, Default)]
    pub struct ViewAdd {
        pub icon_name: OnceCell<String>,
        pub view_title: OnceCell<String>,
        pub is_responsive: Cell<bool>,
    }

    #[glib::object_subclass]
    impl ObjectSubclass for ViewAdd {
        const NAME: &'static str = "HealthViewAdd";
        type ParentType = adw::Bin;
        type Type = super::ViewAdd;
    }

    impl ObjectImpl for ViewAdd {
        fn properties() -> &'static [glib::ParamSpec] {
            use once_cell::sync::Lazy;
            static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
                vec![
                    glib::ParamSpecString::builder("icon-name")
                        .construct_only()
                        .readwrite()
                        .build(),
                    glib::ParamSpecString::builder("view-title")
                        .construct_only()
                        .readwrite()
                        .build(),
                    glib::ParamSpecBoolean::builder("is-responsive")
                        .construct()
                        .readwrite()
                        .build(),
                ]
            });

            PROPERTIES.as_ref()
        }

        fn set_property(&self, _id: usize, value: &glib::Value, pspec: &glib::ParamSpec) {
            match pspec.name() {
                "icon-name" => self.icon_name.set(value.get().unwrap()).unwrap(),
                "view-title" => self.view_title.set(value.get().unwrap()).unwrap(),
                "is-responsive" => self.is_responsive.set(value.get().unwrap()),
                _ => unimplemented!(),
            }
        }

        fn property(&self, _id: usize, pspec: &glib::ParamSpec) -> glib::Value {
            match pspec.name() {
                "icon-name" => self.icon_name.get().unwrap().to_value(),
                "view-title" => self.view_title.get().unwrap().to_value(),
                "is-responsive" => self.is_responsive.get().to_value(),
                _ => unimplemented!(),
            }
        }
    }
    impl WidgetImpl for ViewAdd {}
    impl BinImpl for ViewAdd {}
}

glib::wrapper! {
    /// [ViewAdd] is a toplevel container that is implemented by all other views of Health.
    pub struct ViewAdd(ObjectSubclass<imp::ViewAdd>)
        @extends gtk::Widget, adw::Bin,
        @implements gtk::Accessible, gtk::Buildable, gtk::ConstraintTarget;
}

impl ViewAdd {
    pub fn new(icon_name: &str, view_title: &str) -> Self {
        glib::Object::builder()
            .property("icon-name", icon_name)
            .property("view-title", view_title)
            .build()
    }
}

pub trait ViewAddExt {
    fn connect_is_responsive_notify<F: Fn(&Self) + 'static>(&self, f: F) -> glib::SignalHandlerId;

    fn icon_name(&self) -> String;
    fn is_responsive(&self) -> bool;
    fn set_is_responsive(&self, value: bool);
    fn view_title(&self) -> String;
}

impl<O: IsA<ViewAdd>> ViewAddExt for O {
    fn connect_is_responsive_notify<F: Fn(&Self) + 'static>(&self, f: F) -> glib::SignalHandlerId {
        self.connect_notify_local(Some("is-responsive"), move |s, _| f(s))
    }

    fn icon_name(&self) -> String {
        self.property("icon-name")
    }

    fn is_responsive(&self) -> bool {
        self.property("is-responsive")
    }

    fn set_is_responsive(&self, value: bool) {
        self.set_property("is-responsive", value)
    }

    fn view_title(&self) -> String {
        self.property("view-title")
    }
}

unsafe impl<T: BinImpl> IsSubclassable<T> for ViewAdd {
    fn class_init(class: &mut glib::Class<Self>) {
        <adw::Bin as IsSubclassable<T>>::class_init(class.upcast_ref_mut());
    }

    fn instance_init(instance: &mut glib::subclass::InitializingObject<T>) {
        <adw::Bin as IsSubclassable<T>>::instance_init(instance);
    }
}

#[cfg(test)]
mod test {
    use super::ViewAdd;
    use crate::utils::init_gtk;

    #[gtk::test]
    fn new() {
        init_gtk();
        ViewAdd::new("test", "test");
    }
}