libadwaita 0.1.0-alpha

Rust bindings for libadwaita
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use glib::subclass::prelude::*;
use glib::translate::*;
use glib::Cast;

use crate::ActionRow;
use gtk::subclass::list_box_row::ListBoxRowImpl;
use gtk::ListBoxRow;

pub trait ActionRowImpl: ActionRowImplExt + ListBoxRowImpl {
    fn activate(&self, row: &Self::Type) {
        ActionRowImplExt::parent_activate(self, row)
    }
}

pub trait ActionRowImplExt: ObjectSubclass {
    fn parent_activate(&self, row: &Self::Type);
}

impl<T: ActionRowImpl> ActionRowImplExt for T {
    fn parent_activate(&self, row: &Self::Type) {
        unsafe {
            let data = T::type_data();
            let parent_class = data.as_ref().parent_class() as *mut ffi::AdwActionRowClass;
            if let Some(f) = (*parent_class).activate {
                f(row.unsafe_cast_ref::<ActionRow>().to_glib_none().0)
            }
        }
    }
}

unsafe impl<T: ActionRowImpl> IsSubclassable<T> for ActionRow {
    fn class_init(class: &mut glib::Class<Self>) {
        <ListBoxRow as IsSubclassable<T>>::class_init(class);

        let klass = class.as_mut();
        klass.activate = Some(row_activate::<T>);
    }

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

unsafe extern "C" fn row_activate<T: ActionRowImpl>(ptr: *mut ffi::AdwActionRow) {
    let instance = &*(ptr as *mut T::Instance);
    let imp = instance.impl_();
    let wrap: Borrowed<ActionRow> = from_glib_borrow(ptr);

    ActionRowImpl::activate(imp, wrap.unsafe_cast_ref())
}