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// Take a look at the license at the top of the repository in the LICENSE file.

use glib::{error::ErrorDomain, translate::*};

use crate::DBusMethodInvocation;

impl DBusMethodInvocation {
    /// Finishes handling a D-Bus method call by returning an error.
    ///
    /// See `g_dbus_error_encode_gerror()` for details about what error name
    /// will be returned on the wire. In a nutshell, if the given error is
    /// registered using `g_dbus_error_register_error()` the name given
    /// during registration is used. Otherwise, a name of the form
    /// `org.gtk.GDBus.UnmappedGError.Quark...` is used. This provides
    /// transparent mapping of [`glib::Error`][crate::glib::Error] between applications using GDBus.
    ///
    /// If you are writing an application intended to be portable,
    /// always register errors with `g_dbus_error_register_error()`
    /// or use [`return_dbus_error()`][Self::return_dbus_error()].
    ///
    /// This method will take ownership of `self`. See
    /// `GDBusInterfaceVTable` for more information about the ownership of
    /// `self`.
    ///
    /// Since 2.48, if the method call requested for a reply not to be sent
    /// then this call will free `self` but otherwise do nothing (as per
    /// the recommendations of the D-Bus specification).
    /// ## `domain`
    /// A `GQuark` for the [`glib::Error`][crate::glib::Error] error domain.
    /// ## `code`
    /// The error code.
    /// ## `format`
    /// `printf()`-style format.
    #[doc(alias = "g_dbus_method_invocation_return_error_literal")]
    pub fn return_error<T: ErrorDomain>(&self, error: T, message: &str) {
        unsafe {
            ffi::g_dbus_method_invocation_return_error_literal(
                self.to_glib_full(),
                T::domain().into_glib(),
                error.code(),
                message.to_glib_none().0,
            );
        }
    }

    /// Like `g_dbus_method_invocation_return_error()` but takes a [`glib::Error`][crate::glib::Error]
    /// instead of the error domain, error code and message.
    ///
    /// This method will take ownership of `self`. See
    /// `GDBusInterfaceVTable` for more information about the ownership of
    /// `self`.
    /// ## `error`
    /// A [`glib::Error`][crate::glib::Error].
    #[doc(alias = "g_dbus_method_invocation_return_gerror")]
    pub fn return_gerror(&self, error: glib::Error) {
        unsafe {
            ffi::g_dbus_method_invocation_return_gerror(
                self.to_glib_full(),
                error.to_glib_none().0,
            );
        }
    }
}