// 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 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! {
    /// A [`Permission`][crate::Permission] represents the status of the caller's permission to
    /// perform a certain action.
    ///
    /// You can query if the action is currently allowed and if it is
    /// possible to acquire the permission so that the action will be allowed
    /// in the future.
    ///
    /// There is also an API to actually acquire the permission and one to
    /// release it.
    ///
    /// As an example, a [`Permission`][crate::Permission] might represent the ability for the
    /// user to write to a [`Settings`][crate::Settings] object. This [`Permission`][crate::Permission] object could
    /// then be used to decide if it is appropriate to show a "Click here to
    /// unlock" button in a dialog and to provide the mechanism to invoke
    /// when that button is clicked.
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// # Implements
    ///
    /// [`PermissionExt`][trait@crate::prelude::PermissionExt], [`trait@glib::ObjectExt`]
    #[doc(alias = "GPermission")]
    pub struct Permission(Object<ffi::GPermission, ffi::GPermissionClass>);

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

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

/// Trait containing all [`struct@Permission`] methods.
///
/// # Implementors
///
/// [`Permission`][struct@crate::Permission], [`SimplePermission`][struct@crate::SimplePermission]
pub trait PermissionExt: 'static {
    /// Attempts to acquire the permission represented by `self`.
    ///
    /// The precise method by which this happens depends on the permission
    /// and the underlying authentication mechanism. A simple example is
    /// that a dialog may appear asking the user to enter their password.
    ///
    /// You should check with [`can_acquire()`][Self::can_acquire()] before calling
    /// this function.
    ///
    /// If the permission is acquired then [`true`] is returned. Otherwise,
    /// [`false`] is returned and `error` is set appropriately.
    ///
    /// This call is blocking, likely for a very long time (in the case that
    /// user interaction is required). See [`acquire_async()`][Self::acquire_async()] for
    /// the non-blocking version.
    /// ## `cancellable`
    /// a [`Cancellable`][crate::Cancellable], or [`None`]
    ///
    /// # Returns
    ///
    /// [`true`] if the permission was successfully acquired
    #[doc(alias = "g_permission_acquire")]
    fn acquire(&self, cancellable: Option<&impl IsA<Cancellable>>) -> Result<(), glib::Error>;

    /// Attempts to acquire the permission represented by `self`.
    ///
    /// This is the first half of the asynchronous version of
    /// [`acquire()`][Self::acquire()].
    /// ## `cancellable`
    /// a [`Cancellable`][crate::Cancellable], or [`None`]
    /// ## `callback`
    /// the `GAsyncReadyCallback` to call when done
    #[doc(alias = "g_permission_acquire_async")]
    fn acquire_async<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    );

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

    /// Gets the value of the 'allowed' property. This property is [`true`] if
    /// the caller currently has permission to perform the action that
    /// `self` represents the permission to perform.
    ///
    /// # Returns
    ///
    /// the value of the 'allowed' property
    #[doc(alias = "g_permission_get_allowed")]
    #[doc(alias = "get_allowed")]
    fn is_allowed(&self) -> bool;

    /// Gets the value of the 'can-acquire' property. This property is [`true`]
    /// if it is generally possible to acquire the permission by calling
    /// [`acquire()`][Self::acquire()].
    ///
    /// # Returns
    ///
    /// the value of the 'can-acquire' property
    #[doc(alias = "g_permission_get_can_acquire")]
    #[doc(alias = "get_can_acquire")]
    fn can_acquire(&self) -> bool;

    /// Gets the value of the 'can-release' property. This property is [`true`]
    /// if it is generally possible to release the permission by calling
    /// [`release()`][Self::release()].
    ///
    /// # Returns
    ///
    /// the value of the 'can-release' property
    #[doc(alias = "g_permission_get_can_release")]
    #[doc(alias = "get_can_release")]
    fn can_release(&self) -> bool;

    /// This function is called by the [`Permission`][crate::Permission] implementation to update
    /// the properties of the permission. You should never call this
    /// function except from a [`Permission`][crate::Permission] implementation.
    ///
    /// GObject notify signals are generated, as appropriate.
    /// ## `allowed`
    /// the new value for the 'allowed' property
    /// ## `can_acquire`
    /// the new value for the 'can-acquire' property
    /// ## `can_release`
    /// the new value for the 'can-release' property
    #[doc(alias = "g_permission_impl_update")]
    fn impl_update(&self, allowed: bool, can_acquire: bool, can_release: bool);

    /// Attempts to release the permission represented by `self`.
    ///
    /// The precise method by which this happens depends on the permission
    /// and the underlying authentication mechanism. In most cases the
    /// permission will be dropped immediately without further action.
    ///
    /// You should check with [`can_release()`][Self::can_release()] before calling
    /// this function.
    ///
    /// If the permission is released then [`true`] is returned. Otherwise,
    /// [`false`] is returned and `error` is set appropriately.
    ///
    /// This call is blocking, likely for a very long time (in the case that
    /// user interaction is required). See [`release_async()`][Self::release_async()] for
    /// the non-blocking version.
    /// ## `cancellable`
    /// a [`Cancellable`][crate::Cancellable], or [`None`]
    ///
    /// # Returns
    ///
    /// [`true`] if the permission was successfully released
    #[doc(alias = "g_permission_release")]
    fn release(&self, cancellable: Option<&impl IsA<Cancellable>>) -> Result<(), glib::Error>;

    /// Attempts to release the permission represented by `self`.
    ///
    /// This is the first half of the asynchronous version of
    /// [`release()`][Self::release()].
    /// ## `cancellable`
    /// a [`Cancellable`][crate::Cancellable], or [`None`]
    /// ## `callback`
    /// the `GAsyncReadyCallback` to call when done
    #[doc(alias = "g_permission_release_async")]
    fn release_async<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    );

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

    #[doc(alias = "allowed")]
    fn connect_allowed_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[doc(alias = "can-acquire")]
    fn connect_can_acquire_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;

    #[doc(alias = "can-release")]
    fn connect_can_release_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
}

impl<O: IsA<Permission>> PermissionExt for O {
    fn acquire(&self, cancellable: Option<&impl IsA<Cancellable>>) -> Result<(), glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let is_ok = ffi::g_permission_acquire(
                self.as_ref().to_glib_none().0,
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                &mut error,
            );
            assert_eq!(is_ok == glib::ffi::GFALSE, !error.is_null());
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    fn acquire_async<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        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 acquire_async_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_permission_acquire_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 = acquire_async_trampoline::<P>;
        unsafe {
            ffi::g_permission_acquire_async(
                self.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 acquire_future(
        &self,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>> {
        Box_::pin(crate::GioFuture::new(
            self,
            move |obj, cancellable, send| {
                obj.acquire_async(Some(cancellable), move |res| {
                    send.resolve(res);
                });
            },
        ))
    }

    fn is_allowed(&self) -> bool {
        unsafe {
            from_glib(ffi::g_permission_get_allowed(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn can_acquire(&self) -> bool {
        unsafe {
            from_glib(ffi::g_permission_get_can_acquire(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn can_release(&self) -> bool {
        unsafe {
            from_glib(ffi::g_permission_get_can_release(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    fn impl_update(&self, allowed: bool, can_acquire: bool, can_release: bool) {
        unsafe {
            ffi::g_permission_impl_update(
                self.as_ref().to_glib_none().0,
                allowed.into_glib(),
                can_acquire.into_glib(),
                can_release.into_glib(),
            );
        }
    }

    fn release(&self, cancellable: Option<&impl IsA<Cancellable>>) -> Result<(), glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let is_ok = ffi::g_permission_release(
                self.as_ref().to_glib_none().0,
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                &mut error,
            );
            assert_eq!(is_ok == glib::ffi::GFALSE, !error.is_null());
            if error.is_null() {
                Ok(())
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    fn release_async<P: FnOnce(Result<(), glib::Error>) + 'static>(
        &self,
        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 release_async_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_permission_release_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 = release_async_trampoline::<P>;
        unsafe {
            ffi::g_permission_release_async(
                self.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 release_future(
        &self,
    ) -> Pin<Box_<dyn std::future::Future<Output = Result<(), glib::Error>> + 'static>> {
        Box_::pin(crate::GioFuture::new(
            self,
            move |obj, cancellable, send| {
                obj.release_async(Some(cancellable), move |res| {
                    send.resolve(res);
                });
            },
        ))
    }

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

    fn connect_can_acquire_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_can_acquire_trampoline<
            P: IsA<Permission>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GPermission,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Permission::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::can-acquire\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_can_acquire_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn connect_can_release_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_can_release_trampoline<
            P: IsA<Permission>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GPermission,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(Permission::from_glib_borrow(this).unsafe_cast_ref())
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"notify::can-release\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    notify_can_release_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

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