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// Copyright 2015, The Rust-GNOME Project Developers.
// See the COPYRIGHT file at the top-level directory of this distribution.
// Licensed under the MIT license, see the LICENSE file or <http://opensource.org/licenses/MIT>

use libc::c_void;

use ffi::{self, gpointer, GCallback};
use translate::ToGlibPtr;

pub unsafe fn connect(receiver: gpointer, signal_name: &str, trampoline: GCallback,
                      closure: *mut Box<Fn() + 'static>) -> u64 {
    let handle = ffi::g_signal_connect_data(receiver, signal_name.to_glib_none().0,
        trampoline, closure as gpointer, destroy_closure, 0) as u64;
    assert!(handle > 0);
    handle
}

extern "C" fn destroy_closure(ptr: *mut c_void, _: *mut c_void) {
    unsafe {
        let ptr = ptr as *mut Box<Fn()>;
        // destroy
        //Box::from_raw(ptr);
        // from_raw API stability workaround
        let _: Box<Box<Fn()>> = ::std::mem::transmute(ptr);
    }
}