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
mod changelistener;
mod comhelpers;
mod desktopid;
mod error;
mod hresult;
mod immersive;
mod interfaces;
mod service;
use crate::comhelpers::ComError;
use crate::desktopid::DesktopID;
use crate::service::VirtualDesktopService;
use com::runtime::{init_apartment, ApartmentType};
use crossbeam_channel::{unbounded, Receiver, Sender};
use once_cell::sync::Lazy;
use std::cell::{Ref, RefCell};
use std::sync::{
atomic::{AtomicBool, Ordering},
Mutex,
};
pub use crate::changelistener::VirtualDesktopEvent;
pub use crate::error::Error;
pub use crate::hresult::HRESULT;
pub use crate::interfaces::HWND;
static SERVICE: Lazy<Mutex<RefCell<Result<Box<VirtualDesktopService>, Error>>>> =
Lazy::new(|| Mutex::new(RefCell::new(Err(Error::ServiceNotCreated))));
static EVENTS: Lazy<(Sender<VirtualDesktopEvent>, Receiver<VirtualDesktopEvent>)> =
Lazy::new(unbounded);
static HAS_LISTENERS: AtomicBool = AtomicBool::new(false);
fn error_side_effect(err: &Error) -> Result<bool, Error> {
match err {
Error::ComError(hresult) => {
let comerror = ComError::from(*hresult);
#[cfg(feature = "debug")]
println!("ComError::{:?}", comerror);
match comerror {
ComError::NotInitialized => {
#[cfg(feature = "debug")]
println!("Com initialize");
init_apartment(ApartmentType::Multithreaded).map_err(HRESULT::from_i32)?;
Ok(true)
}
ComError::ClassNotRegistered => Ok(true),
ComError::RpcUnavailable => Ok(true),
ComError::Unknown(_) => Ok(false),
}
}
Error::ServiceNotCreated => Ok(true),
_ => Ok(false),
}
}
fn with_service<T, F>(cb: F) -> Result<T, Error>
where
F: Fn(&VirtualDesktopService) -> Result<T, Error>,
{
match SERVICE.lock() {
Ok(cell) => {
for _ in 0..6 {
let service_ref: Ref<Result<Box<VirtualDesktopService>, Error>> = (*cell).borrow();
let result = service_ref.as_ref();
match result {
Ok(v) => match cb(&v) {
Ok(r) => return Ok(r),
Err(err) => match error_side_effect(&err) {
Ok(false) => return Err(err),
Ok(true) => (),
Err(err) => return Err(err),
},
},
Err(err) => {
#[allow(unused_must_use)]
{
error_side_effect(&err);
}
}
}
drop(service_ref);
#[cfg(feature = "debug")]
println!("Try to create");
let _ = (*cell).replace(VirtualDesktopService::create());
}
Err(Error::ServiceNotCreated)
}
Err(_) => {
#[cfg(feature = "debug")]
println!("Lock failed?");
Err(Error::ServiceNotCreated)
}
}
}
pub fn notify_explorer_restarted() -> Result<(), Error> {
if let Ok(cell) = SERVICE.lock() {
let _ = (*cell).replace(Ok(VirtualDesktopService::create()?));
Ok(())
} else {
Ok(())
}
}
pub fn get_event_receiver() -> Receiver<VirtualDesktopEvent> {
let _res = with_service(|s| {
s.get_event_receiver()?;
HAS_LISTENERS.store(true, Ordering::SeqCst);
Ok(())
});
EVENTS.1.clone()
}
pub(crate) fn get_desktops() -> Result<Vec<DesktopID>, Error> {
with_service(|s| s.get_desktops())
}
pub(crate) fn get_index_by_desktop(desktop: DesktopID) -> Result<usize, Error> {
with_service(|s| s.get_index_by_desktop(desktop))
}
pub fn get_desktop_count() -> Result<u32, Error> {
with_service(|s| s.get_desktop_count())
}
pub fn get_current_desktop() -> Result<usize, Error> {
with_service(|s| s.get_index_by_desktop(s.get_current_desktop()?))
}
pub fn get_desktop_by_window(hwnd: HWND) -> Result<usize, Error> {
with_service(|s| s.get_index_by_desktop(s.get_desktop_by_window(hwnd)?))
}
pub fn is_window_on_current_virtual_desktop(hwnd: HWND) -> Result<bool, Error> {
with_service(|s| s.is_window_on_current_virtual_desktop(hwnd))
}
pub fn is_window_on_desktop(hwnd: HWND, desktop: usize) -> Result<bool, Error> {
with_service(|s| s.is_window_on_desktop(hwnd, &s.get_desktop_by_index(desktop)?))
}
pub fn move_window_to_desktop(hwnd: HWND, desktop: usize) -> Result<(), Error> {
with_service(|s| s.move_window_to_desktop(hwnd, &s.get_desktop_by_index(desktop)?))
}
pub fn go_to_desktop(desktop: usize) -> Result<(), Error> {
with_service(|s| s.go_to_desktop(&s.get_desktop_by_index(desktop)?))
}
pub fn is_pinned_window(hwnd: HWND) -> Result<bool, Error> {
with_service(|s| s.is_pinned_window(hwnd))
}
pub fn pin_window(hwnd: HWND) -> Result<(), Error> {
with_service(|s| s.pin_window(hwnd))
}
pub fn unpin_window(hwnd: HWND) -> Result<(), Error> {
with_service(|s| s.unpin_window(hwnd))
}