1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
// 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")
    }
}