jay-compositor 1.15.0

The Jay compositor
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use crate::object::Version;
use crate::utils::clonecell::CloneCell;
use crate::wire::WpFractionalScaleV1Id;
use crate::wire::wp_fractional_scale_v1::*;
use crate::wl_usr::UsrCon;
use crate::wl_usr::usr_object::UsrObject;
use std::convert::Infallible;
use std::rc::Rc;

pub struct UsrWpFractionalScale {
    pub id: WpFractionalScaleV1Id,
    pub con: Rc<UsrCon>,
    pub owner: CloneCell<Option<Rc<dyn UsrWpFractionalScaleOwner>>>,
    pub version: Version,
}

pub trait UsrWpFractionalScaleOwner {
    fn preferred_scale(self: Rc<Self>, ev: &PreferredScale) {
        let _ = ev;
    }
}

impl WpFractionalScaleV1EventHandler for UsrWpFractionalScale {
    type Error = Infallible;

    fn preferred_scale(&self, ev: PreferredScale, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        if let Some(owner) = self.owner.get() {
            owner.preferred_scale(&ev);
        }
        Ok(())
    }
}

usr_object_base! {
    self = UsrWpFractionalScale = WpFractionalScaleV1;
    version = self.version;
}

impl UsrObject for UsrWpFractionalScale {
    fn destroy(&self) {
        self.con.request(Destroy { self_id: self.id });
    }

    fn break_loops(&self) {
        self.owner.take();
    }
}