// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::AsyncResult;
use crate::Cancellable;
use crate::Drive;
use crate::File;
use crate::Icon;
use crate::MountMountFlags;
use crate::MountOperation;
use crate::MountUnmountFlags;
use crate::Volume;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem::transmute;
use std::pin::Pin;
use std::ptr;

glib::wrapper! {
    /// The [`Mount`][crate::Mount] interface represents user-visible mounts. Note, when
    /// porting from GnomeVFS, [`Mount`][crate::Mount] is the moral equivalent of `GnomeVFSVolume`.
    ///
    /// [`Mount`][crate::Mount] is a "mounted" filesystem that you can access. Mounted is in
    /// quotes because it's not the same as a unix mount, it might be a gvfs
    /// mount, but you can still access the files on it if you use GIO. Might or
    /// might not be related to a volume object.
    ///
    /// Unmounting a [`Mount`][crate::Mount] instance is an asynchronous operation. For
    /// more information about asynchronous operations, see [`AsyncResult`][crate::AsyncResult]
    /// and [`Task`][crate::Task]. To unmount a [`Mount`][crate::Mount] instance, first call
    /// [`MountExt::unmount_with_operation()`][crate::prelude::MountExt::unmount_with_operation()] with (at least) the [`Mount`][crate::Mount] instance and a
    /// `GAsyncReadyCallback`. The callback will be fired when the
    /// operation has resolved (either with success or failure), and a
    /// [`AsyncResult`][crate::AsyncResult] structure will be passed to the callback. That
    /// callback should then call `g_mount_unmount_with_operation_finish()` with the [`Mount`][crate::Mount]
    /// and the [`AsyncResult`][crate::AsyncResult] data to see if the operation was completed
    /// successfully. If an `error` is present when `g_mount_unmount_with_operation_finish()`
    /// is called, then it will be filled with any error information.
    ///
    /// # Implements
    ///
    /// [`MountExt`][trait@crate::prelude::MountExt]
    #[doc(alias = "GMount")]
    pub struct Mount(Interface<ffi::GMount, ffi::GMountIface>);

    match fn {
        type_ => || ffi::g_mount_get_type(),
    }
}

impl Mount {
    pub const NONE: Option<&'static Mount> = None;
}

/// Trait containing all [`struct@Mount`] methods.
///
/// # Implementors
///
/// [`Mount`][struct@crate::Mount]
pub trait MountExt: 'static {
    /// Checks if `self` can be ejected.
    ///
    /// # Returns
    ///
    /// [`true`] if the `self` can be ejected.
    #[doc(alias = "g_mount_can_eject")]
    fn can_eject(&self) -> bool;

    /// Checks if `self` can be unmounted.
    ///
    /// # Returns
    ///
    /// [`true`] if the `self` can be unmounted.
    #[doc(alias = "g_mount_can_unmount")]
    fn can_unmount(&self) -> bool;

    /// Ejects a mount. This is an asynchronous operation, and is
    /// finished by calling `g_mount_eject_with_operation_finish()` with the `self`
    /// and [`AsyncResult`][crate::AsyncResult] data returned in the `callback`.
    /// ## `flags`
    /// flags affecting the unmount if required for eject
    /// ## `mount_operation`
    /// a [`MountOperation`][crate::MountOperation] or [`None`] to avoid
    ///  user interaction.
    /// ## `cancellable`
    /// optional [`Cancellable`][crate::Cancellable] object, [`None`] to ignore.
    /// ## `callback`
    /// a `GAsyncReadyCallback`, or [`None`].
    #[doc(alias = "g_mount_eject_with_operation")]
    fn eject_with_operation<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&impl IsA<MountOperation>>,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    );

    fn eject_with_operation_future(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&(impl IsA<MountOperation> + Clone + 'static)>,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>>;

    /// Gets the default location of `self`. The default location of the given
    /// `self` is a path that reflects the main entry point for the user (e.g.
    /// the home directory, or the root of the volume).
    ///
    /// # Returns
    ///
    /// a [`File`][crate::File].
    ///  The returned object should be unreffed with
    ///  `g_object_unref()` when no longer needed.
    #[doc(alias = "g_mount_get_default_location")]
    #[doc(alias = "get_default_location")]
    fn default_location(&self) -> File;

    /// Gets the drive for the `self`.
    ///
    /// This is a convenience method for getting the [`Volume`][crate::Volume] and then
    /// using that object to get the [`Drive`][crate::Drive].
    ///
    /// # Returns
    ///
    /// a [`Drive`][crate::Drive] or [`None`] if `self` is not
    ///  associated with a volume or a drive.
    ///  The returned object should be unreffed with
    ///  `g_object_unref()` when no longer needed.
    #[doc(alias = "g_mount_get_drive")]
    #[doc(alias = "get_drive")]
    fn drive(&self) -> Option<Drive>;

    /// Gets the icon for `self`.
    ///
    /// # Returns
    ///
    /// a [`Icon`][crate::Icon].
    ///  The returned object should be unreffed with
    ///  `g_object_unref()` when no longer needed.
    #[doc(alias = "g_mount_get_icon")]
    #[doc(alias = "get_icon")]
    fn icon(&self) -> Icon;

    /// Gets the name of `self`.
    ///
    /// # Returns
    ///
    /// the name for the given `self`.
    ///  The returned string should be freed with `g_free()`
    ///  when no longer needed.
    #[doc(alias = "g_mount_get_name")]
    #[doc(alias = "get_name")]
    fn name(&self) -> glib::GString;

    /// Gets the root directory on `self`.
    ///
    /// # Returns
    ///
    /// a [`File`][crate::File].
    ///  The returned object should be unreffed with
    ///  `g_object_unref()` when no longer needed.
    #[doc(alias = "g_mount_get_root")]
    #[doc(alias = "get_root")]
    fn root(&self) -> File;

    /// Gets the sort key for `self`, if any.
    ///
    /// # Returns
    ///
    /// Sorting key for `self` or [`None`] if no such key is available.
    #[doc(alias = "g_mount_get_sort_key")]
    #[doc(alias = "get_sort_key")]
    fn sort_key(&self) -> Option<glib::GString>;

    /// Gets the symbolic icon for `self`.
    ///
    /// # Returns
    ///
    /// a [`Icon`][crate::Icon].
    ///  The returned object should be unreffed with
    ///  `g_object_unref()` when no longer needed.
    #[doc(alias = "g_mount_get_symbolic_icon")]
    #[doc(alias = "get_symbolic_icon")]
    fn symbolic_icon(&self) -> Icon;

    /// Gets the UUID for the `self`. The reference is typically based on
    /// the file system UUID for the mount in question and should be
    /// considered an opaque string. Returns [`None`] if there is no UUID
    /// available.
    ///
    /// # Returns
    ///
    /// the UUID for `self` or [`None`] if no UUID
    ///  can be computed.
    ///  The returned string should be freed with `g_free()`
    ///  when no longer needed.
    #[doc(alias = "g_mount_get_uuid")]
    #[doc(alias = "get_uuid")]
    fn uuid(&self) -> Option<glib::GString>;

    /// Gets the volume for the `self`.
    ///
    /// # Returns
    ///
    /// a [`Volume`][crate::Volume] or [`None`] if `self` is not
    ///  associated with a volume.
    ///  The returned object should be unreffed with
    ///  `g_object_unref()` when no longer needed.
    #[doc(alias = "g_mount_get_volume")]
    #[doc(alias = "get_volume")]
    fn volume(&self) -> Option<Volume>;

    /// Tries to guess the type of content stored on `self`. Returns one or
    /// more textual identifiers of well-known content types (typically
    /// prefixed with "x-content/"), e.g. x-content/image-dcf for camera
    /// memory cards. See the
    /// [shared-mime-info](http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec)
    /// specification for more on x-content types.
    ///
    /// This is an asynchronous operation (see
    /// [`guess_content_type_sync()`][Self::guess_content_type_sync()] for the synchronous version), and
    /// is finished by calling `g_mount_guess_content_type_finish()` with the
    /// `self` and [`AsyncResult`][crate::AsyncResult] data returned in the `callback`.
    /// ## `force_rescan`
    /// Whether to force a rescan of the content.
    ///  Otherwise a cached result will be used if available
    /// ## `cancellable`
    /// optional [`Cancellable`][crate::Cancellable] object, [`None`] to ignore
    /// ## `callback`
    /// a `GAsyncReadyCallback`
    #[doc(alias = "g_mount_guess_content_type")]
    fn guess_content_type<P: FnOnce(Result<Vec<glib::GString>, glib::Error>) + 'static>(
        &self,
        force_rescan: bool,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    );

    fn guess_content_type_future(
        &self,
        force_rescan: bool,
    ) -> Pin<
        Box_<dyn std::future::Future<Output = Result<Vec<glib::GString>, glib::Error>> + 'static>,
    >;

    /// Tries to guess the type of content stored on `self`. Returns one or
    /// more textual identifiers of well-known content types (typically
    /// prefixed with "x-content/"), e.g. x-content/image-dcf for camera
    /// memory cards. See the
    /// [shared-mime-info](http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec)
    /// specification for more on x-content types.
    ///
    /// This is a synchronous operation and as such may block doing IO;
    /// see [`guess_content_type()`][Self::guess_content_type()] for the asynchronous version.
    /// ## `force_rescan`
    /// Whether to force a rescan of the content.
    ///  Otherwise a cached result will be used if available
    /// ## `cancellable`
    /// optional [`Cancellable`][crate::Cancellable] object, [`None`] to ignore
    ///
    /// # Returns
    ///
    /// a [`None`]-terminated array of content types or [`None`] on error.
    ///  Caller should free this array with `g_strfreev()` when done with it.
    #[doc(alias = "g_mount_guess_content_type_sync")]
    fn guess_content_type_sync(
        &self,
        force_rescan: bool,
        cancellable: Option<&impl IsA<Cancellable>>,
    ) -> Result<Vec<glib::GString>, glib::Error>;

    /// Determines if `self` is shadowed. Applications or libraries should
    /// avoid displaying `self` in the user interface if it is shadowed.
    ///
    /// A mount is said to be shadowed if there exists one or more user
    /// visible objects (currently [`Mount`][crate::Mount] objects) with a root that is
    /// inside the root of `self`.
    ///
    /// One application of shadow mounts is when exposing a single file
    /// system that is used to address several logical volumes. In this
    /// situation, a [`VolumeMonitor`][crate::VolumeMonitor] implementation would create two
    /// [`Volume`][crate::Volume] objects (for example, one for the camera functionality of
    /// the device and one for a SD card reader on the device) with
    /// activation URIs `gphoto2://[usb:001,002]/store1/`
    /// and `gphoto2://[usb:001,002]/store2/`. When the
    /// underlying mount (with root
    /// `gphoto2://[usb:001,002]/`) is mounted, said
    /// [`VolumeMonitor`][crate::VolumeMonitor] implementation would create two [`Mount`][crate::Mount] objects
    /// (each with their root matching the corresponding volume activation
    /// root) that would shadow the original mount.
    ///
    /// The proxy monitor in GVfs 2.26 and later, automatically creates and
    /// manage shadow mounts (and shadows the underlying mount) if the
    /// activation root on a [`Volume`][crate::Volume] is set.
    ///
    /// # Returns
    ///
    /// [`true`] if `self` is shadowed.
    #[doc(alias = "g_mount_is_shadowed")]
    fn is_shadowed(&self) -> bool;

    /// Remounts a mount. This is an asynchronous operation, and is
    /// finished by calling `g_mount_remount_finish()` with the `self`
    /// and `GAsyncResults` data returned in the `callback`.
    ///
    /// Remounting is useful when some setting affecting the operation
    /// of the volume has been changed, as these may need a remount to
    /// take affect. While this is semantically equivalent with unmounting
    /// and then remounting not all backends might need to actually be
    /// unmounted.
    /// ## `flags`
    /// flags affecting the operation
    /// ## `mount_operation`
    /// a [`MountOperation`][crate::MountOperation] or [`None`] to avoid
    ///  user interaction.
    /// ## `cancellable`
    /// optional [`Cancellable`][crate::Cancellable] object, [`None`] to ignore.
    /// ## `callback`
    /// a `GAsyncReadyCallback`, or [`None`].
    #[doc(alias = "g_mount_remount")]
    fn remount<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        flags: MountMountFlags,
        mount_operation: Option<&impl IsA<MountOperation>>,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    );

    fn remount_future(
        &self,
        flags: MountMountFlags,
        mount_operation: Option<&(impl IsA<MountOperation> + Clone + 'static)>,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>>;

    /// Increments the shadow count on `self`. Usually used by
    /// [`VolumeMonitor`][crate::VolumeMonitor] implementations when creating a shadow mount for
    /// `self`, see [`is_shadowed()`][Self::is_shadowed()] for more information. The caller
    /// will need to emit the `signal::Mount::changed` signal on `self` manually.
    #[doc(alias = "g_mount_shadow")]
    fn shadow(&self);

    /// Unmounts a mount. This is an asynchronous operation, and is
    /// finished by calling `g_mount_unmount_with_operation_finish()` with the `self`
    /// and [`AsyncResult`][crate::AsyncResult] data returned in the `callback`.
    /// ## `flags`
    /// flags affecting the operation
    /// ## `mount_operation`
    /// a [`MountOperation`][crate::MountOperation] or [`None`] to avoid
    ///  user interaction.
    /// ## `cancellable`
    /// optional [`Cancellable`][crate::Cancellable] object, [`None`] to ignore.
    /// ## `callback`
    /// a `GAsyncReadyCallback`, or [`None`].
    #[doc(alias = "g_mount_unmount_with_operation")]
    fn unmount_with_operation<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&impl IsA<MountOperation>>,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    );

    fn unmount_with_operation_future(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&(impl IsA<MountOperation> + Clone + 'static)>,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>>;

    /// Decrements the shadow count on `self`. Usually used by
    /// [`VolumeMonitor`][crate::VolumeMonitor] implementations when destroying a shadow mount for
    /// `self`, see [`is_shadowed()`][Self::is_shadowed()] for more information. The caller
    /// will need to emit the `signal::Mount::changed` signal on `self` manually.
    #[doc(alias = "g_mount_unshadow")]
    fn unshadow(&self);

    /// Emitted when the mount has been changed.
    #[doc(alias = "changed")]
    fn connect_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    /// This signal may be emitted when the [`Mount`][crate::Mount] is about to be
    /// unmounted.
    ///
    /// This signal depends on the backend and is only emitted if
    /// GIO was used to unmount.
    #[doc(alias = "pre-unmount")]
    fn connect_pre_unmount<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    /// This signal is emitted when the [`Mount`][crate::Mount] have been
    /// unmounted. If the recipient is holding references to the
    /// object they should release them so the object can be
    /// finalized.
    #[doc(alias = "unmounted")]
    fn connect_unmounted<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
}

impl<O: IsA<Mount>> MountExt for O {
    fn can_eject(&self) -> bool {
        unsafe { from_glib(ffi::g_mount_can_eject(self.as_ref().to_glib_none().0)) }
    }

    fn can_unmount(&self) -> bool {
        unsafe { from_glib(ffi::g_mount_can_unmount(self.as_ref().to_glib_none().0)) }
    }

    fn eject_with_operation<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&impl IsA<MountOperation>>,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    ) {
        let main_context = glib::MainContext::ref_thread_default();
        let is_main_context_owner = main_context.is_owner();
        let has_acquired_main_context = (!is_main_context_owner)
            .then(|| main_context.acquire().ok())
            .flatten();
        assert!(
            is_main_context_owner || has_acquired_main_context.is_some(),
            "Async operations only allowed if the thread is owning the MainContext"
        );

        let user_data: Box_<glib::thread_guard::ThreadGuard<P>> =
            Box_::new(glib::thread_guard::ThreadGuard::new(callback));
        unsafe extern "C" fn eject_with_operation_trampoline<
            P: FnOnce(Result<(), glib::Error>) + 'static,
        >(
            _source_object: *mut glib::gobject_ffi::GObject,
            res: *mut crate::ffi::GAsyncResult,
            user_data: glib::ffi::gpointer,
        ) {
            let mut error = ptr::null_mut();
            let _ =
                ffi::g_mount_eject_with_operation_finish(_source_object as *mut _, res, &mut error);
            let result = if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            };
            let callback: Box_<glib::thread_guard::ThreadGuard<P>> =
                Box_::from_raw(user_data as *mut _);
            let callback: P = callback.into_inner();
            callback(result);
        }
        let callback = eject_with_operation_trampoline::<P>;
        unsafe {
            ffi::g_mount_eject_with_operation(
                self.as_ref().to_glib_none().0,
                flags.into_glib(),
                mount_operation.map(|p| p.as_ref()).to_glib_none().0,
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                Some(callback),
                Box_::into_raw(user_data) as *mut _,
            );
        }
    }

    fn eject_with_operation_future(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&(impl IsA<MountOperation> + Clone + 'static)>,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>> {
        let mount_operation = mount_operation.map(ToOwned::to_owned);
        Box_::pin(crate::GioFuture::new(
            self,
            move |obj, cancellable, send| {
                obj.eject_with_operation(
                    flags,
                    mount_operation.as_ref().map(::std::borrow::Borrow::borrow),
                    Some(cancellable),
                    move |res| {
                        send.resolve(res);
                    },
                );
            },
        ))
    }

    fn default_location(&self) -> File {
        unsafe {
            from_glib_full(ffi::g_mount_get_default_location(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn drive(&self) -> Option<Drive> {
        unsafe { from_glib_full(ffi::g_mount_get_drive(self.as_ref().to_glib_none().0)) }
    }

    fn icon(&self) -> Icon {
        unsafe { from_glib_full(ffi::g_mount_get_icon(self.as_ref().to_glib_none().0)) }
    }

    fn name(&self) -> glib::GString {
        unsafe { from_glib_full(ffi::g_mount_get_name(self.as_ref().to_glib_none().0)) }
    }

    fn root(&self) -> File {
        unsafe { from_glib_full(ffi::g_mount_get_root(self.as_ref().to_glib_none().0)) }
    }

    fn sort_key(&self) -> Option<glib::GString> {
        unsafe { from_glib_none(ffi::g_mount_get_sort_key(self.as_ref().to_glib_none().0)) }
    }

    fn symbolic_icon(&self) -> Icon {
        unsafe {
            from_glib_full(ffi::g_mount_get_symbolic_icon(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn uuid(&self) -> Option<glib::GString> {
        unsafe { from_glib_full(ffi::g_mount_get_uuid(self.as_ref().to_glib_none().0)) }
    }

    fn volume(&self) -> Option<Volume> {
        unsafe { from_glib_full(ffi::g_mount_get_volume(self.as_ref().to_glib_none().0)) }
    }

    fn guess_content_type<P: FnOnce(Result<Vec<glib::GString>, glib::Error>) + 'static>(
        &self,
        force_rescan: bool,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    ) {
        let main_context = glib::MainContext::ref_thread_default();
        let is_main_context_owner = main_context.is_owner();
        let has_acquired_main_context = (!is_main_context_owner)
            .then(|| main_context.acquire().ok())
            .flatten();
        assert!(
            is_main_context_owner || has_acquired_main_context.is_some(),
            "Async operations only allowed if the thread is owning the MainContext"
        );

        let user_data: Box_<glib::thread_guard::ThreadGuard<P>> =
            Box_::new(glib::thread_guard::ThreadGuard::new(callback));
        unsafe extern "C" fn guess_content_type_trampoline<
            P: FnOnce(Result<Vec<glib::GString>, glib::Error>) + 'static,
        >(
            _source_object: *mut glib::gobject_ffi::GObject,
            res: *mut crate::ffi::GAsyncResult,
            user_data: glib::ffi::gpointer,
        ) {
            let mut error = ptr::null_mut();
            let ret =
                ffi::g_mount_guess_content_type_finish(_source_object as *mut _, res, &mut error);
            let result = if error.is_null() {
                Ok(FromGlibPtrContainer::from_glib_full(ret))
            } else {
                Err(from_glib_full(error))
            };
            let callback: Box_<glib::thread_guard::ThreadGuard<P>> =
                Box_::from_raw(user_data as *mut _);
            let callback: P = callback.into_inner();
            callback(result);
        }
        let callback = guess_content_type_trampoline::<P>;
        unsafe {
            ffi::g_mount_guess_content_type(
                self.as_ref().to_glib_none().0,
                force_rescan.into_glib(),
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                Some(callback),
                Box_::into_raw(user_data) as *mut _,
            );
        }
    }

    fn guess_content_type_future(
        &self,
        force_rescan: bool,
    ) -> Pin<
        Box_<dyn std::future::Future<Output = Result<Vec<glib::GString>, glib::Error>> + 'static>,
    > {
        Box_::pin(crate::GioFuture::new(
            self,
            move |obj, cancellable, send| {
                obj.guess_content_type(force_rescan, Some(cancellable), move |res| {
                    send.resolve(res);
                });
            },
        ))
    }

    fn guess_content_type_sync(
        &self,
        force_rescan: bool,
        cancellable: Option<&impl IsA<Cancellable>>,
    ) -> Result<Vec<glib::GString>, glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let ret = ffi::g_mount_guess_content_type_sync(
                self.as_ref().to_glib_none().0,
                force_rescan.into_glib(),
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                &mut error,
            );
            if error.is_null() {
                Ok(FromGlibPtrContainer::from_glib_full(ret))
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    fn is_shadowed(&self) -> bool {
        unsafe { from_glib(ffi::g_mount_is_shadowed(self.as_ref().to_glib_none().0)) }
    }

    fn remount<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        flags: MountMountFlags,
        mount_operation: Option<&impl IsA<MountOperation>>,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    ) {
        let main_context = glib::MainContext::ref_thread_default();
        let is_main_context_owner = main_context.is_owner();
        let has_acquired_main_context = (!is_main_context_owner)
            .then(|| main_context.acquire().ok())
            .flatten();
        assert!(
            is_main_context_owner || has_acquired_main_context.is_some(),
            "Async operations only allowed if the thread is owning the MainContext"
        );

        let user_data: Box_<glib::thread_guard::ThreadGuard<P>> =
            Box_::new(glib::thread_guard::ThreadGuard::new(callback));
        unsafe extern "C" fn remount_trampoline<P: FnOnce(Result<(), glib::Error>) + 'static>(
            _source_object: *mut glib::gobject_ffi::GObject,
            res: *mut crate::ffi::GAsyncResult,
            user_data: glib::ffi::gpointer,
        ) {
            let mut error = ptr::null_mut();
            let _ = ffi::g_mount_remount_finish(_source_object as *mut _, res, &mut error);
            let result = if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            };
            let callback: Box_<glib::thread_guard::ThreadGuard<P>> =
                Box_::from_raw(user_data as *mut _);
            let callback: P = callback.into_inner();
            callback(result);
        }
        let callback = remount_trampoline::<P>;
        unsafe {
            ffi::g_mount_remount(
                self.as_ref().to_glib_none().0,
                flags.into_glib(),
                mount_operation.map(|p| p.as_ref()).to_glib_none().0,
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                Some(callback),
                Box_::into_raw(user_data) as *mut _,
            );
        }
    }

    fn remount_future(
        &self,
        flags: MountMountFlags,
        mount_operation: Option<&(impl IsA<MountOperation> + Clone + 'static)>,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>> {
        let mount_operation = mount_operation.map(ToOwned::to_owned);
        Box_::pin(crate::GioFuture::new(
            self,
            move |obj, cancellable, send| {
                obj.remount(
                    flags,
                    mount_operation.as_ref().map(::std::borrow::Borrow::borrow),
                    Some(cancellable),
                    move |res| {
                        send.resolve(res);
                    },
                );
            },
        ))
    }

    fn shadow(&self) {
        unsafe {
            ffi::g_mount_shadow(self.as_ref().to_glib_none().0);
        }
    }

    fn unmount_with_operation<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&impl IsA<MountOperation>>,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    ) {
        let main_context = glib::MainContext::ref_thread_default();
        let is_main_context_owner = main_context.is_owner();
        let has_acquired_main_context = (!is_main_context_owner)
            .then(|| main_context.acquire().ok())
            .flatten();
        assert!(
            is_main_context_owner || has_acquired_main_context.is_some(),
            "Async operations only allowed if the thread is owning the MainContext"
        );

        let user_data: Box_<glib::thread_guard::ThreadGuard<P>> =
            Box_::new(glib::thread_guard::ThreadGuard::new(callback));
        unsafe extern "C" fn unmount_with_operation_trampoline<
            P: FnOnce(Result<(), glib::Error>) + 'static,
        >(
            _source_object: *mut glib::gobject_ffi::GObject,
            res: *mut crate::ffi::GAsyncResult,
            user_data: glib::ffi::gpointer,
        ) {
            let mut error = ptr::null_mut();
            let _ = ffi::g_mount_unmount_with_operation_finish(
                _source_object as *mut _,
                res,
                &mut error,
            );
            let result = if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            };
            let callback: Box_<glib::thread_guard::ThreadGuard<P>> =
                Box_::from_raw(user_data as *mut _);
            let callback: P = callback.into_inner();
            callback(result);
        }
        let callback = unmount_with_operation_trampoline::<P>;
        unsafe {
            ffi::g_mount_unmount_with_operation(
                self.as_ref().to_glib_none().0,
                flags.into_glib(),
                mount_operation.map(|p| p.as_ref()).to_glib_none().0,
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                Some(callback),
                Box_::into_raw(user_data) as *mut _,
            );
        }
    }

    fn unmount_with_operation_future(
        &self,
        flags: MountUnmountFlags,
        mount_operation: Option<&(impl IsA<MountOperation> + Clone + 'static)>,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>> {
        let mount_operation = mount_operation.map(ToOwned::to_owned);
        Box_::pin(crate::GioFuture::new(
            self,
            move |obj, cancellable, send| {
                obj.unmount_with_operation(
                    flags,
                    mount_operation.as_ref().map(::std::borrow::Borrow::borrow),
                    Some(cancellable),
                    move |res| {
                        send.resolve(res);
                    },
                );
            },
        ))
    }

    fn unshadow(&self) {
        unsafe {
            ffi::g_mount_unshadow(self.as_ref().to_glib_none().0);
        }
    }

    fn connect_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn changed_trampoline<P: IsA<Mount>, F: Fn(&P) + 'static>(
            this: *mut ffi::GMount,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Mount::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"changed\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    changed_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_pre_unmount<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn pre_unmount_trampoline<P: IsA<Mount>, F: Fn(&P) + 'static>(
            this: *mut ffi::GMount,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Mount::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"pre-unmount\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    pre_unmount_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_unmounted<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn unmounted_trampoline<P: IsA<Mount>, F: Fn(&P) + 'static>(
            this: *mut ffi::GMount,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Mount::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"unmounted\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    unmounted_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl fmt::Display for Mount {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("Mount")
    }
}