1use std::{
2 cell::{Cell, RefCell},
3 ffi::OsStr,
4 path::{Path, PathBuf},
5 rc::{Rc, Weak},
6 sync::{
7 Arc,
8 atomic::{AtomicBool, Ordering},
9 },
10};
11
12use ::util::{ResultExt, paths::SanitizedPath};
13use anyhow::{Context as _, Result, anyhow};
14use futures::channel::oneshot::{self, Receiver};
15use itertools::Itertools;
16use parking_lot::RwLock;
17use smallvec::SmallVec;
18use windows::{
19 UI::ViewManagement::UISettings,
20 Win32::{
21 Foundation::*,
22 Graphics::{Direct3D11::ID3D11Device, Gdi::*},
23 Security::Credentials::*,
24 System::{Com::*, LibraryLoader::*, Ole::*, SystemInformation::*},
25 UI::{Input::KeyboardAndMouse::*, Shell::*, WindowsAndMessaging::*},
26 },
27 core::*,
28};
29
30use crate::*;
31
32pub(crate) struct WindowsPlatform {
33 inner: Rc<WindowsPlatformInner>,
34 raw_window_handles: Arc<RwLock<SmallVec<[SafeHwnd; 4]>>>,
35 // The below members will never change throughout the entire lifecycle of the app.
36 headless: bool,
37 icon: HICON,
38 background_executor: BackgroundExecutor,
39 foreground_executor: ForegroundExecutor,
40 text_system: Arc<dyn PlatformTextSystem>,
41 direct_write_text_system: Option<Arc<DirectWriteTextSystem>>,
42 drop_target_helper: Option<IDropTargetHelper>,
43 /// Flag to instruct the `VSyncProvider` thread to invalidate the directx devices
44 /// as resizing them has failed, causing us to have lost at least the render target.
45 invalidate_devices: Arc<AtomicBool>,
46 handle: HWND,
47 disable_direct_composition: bool,
48}
49
50struct WindowsPlatformInner {
51 state: WindowsPlatformState,
52 raw_window_handles: std::sync::Weak<RwLock<SmallVec<[SafeHwnd; 4]>>>,
53 // The below members will never change throughout the entire lifecycle of the app.
54 validation_number: usize,
55 main_receiver: PriorityQueueReceiver<RunnableVariant>,
56 dispatcher: Arc<WindowsDispatcher>,
57}
58
59pub(crate) struct WindowsPlatformState {
60 callbacks: PlatformCallbacks,
61 menus: RefCell<Vec<OwnedMenu>>,
62 jump_list: RefCell<JumpList>,
63 // NOTE: standard cursor handles don't need to close.
64 pub(crate) current_cursor: Cell<Option<HCURSOR>>,
65 directx_devices: RefCell<Option<DirectXDevices>>,
66}
67
68#[derive(Default)]
69struct PlatformCallbacks {
70 open_urls: Cell<Option<Box<dyn FnMut(Vec<String>)>>>,
71 quit: Cell<Option<Box<dyn FnMut()>>>,
72 reopen: Cell<Option<Box<dyn FnMut()>>>,
73 app_menu_action: Cell<Option<Box<dyn FnMut(&dyn Action)>>>,
74 will_open_app_menu: Cell<Option<Box<dyn FnMut()>>>,
75 validate_app_menu_command: Cell<Option<Box<dyn FnMut(&dyn Action) -> bool>>>,
76 keyboard_layout_change: Cell<Option<Box<dyn FnMut()>>>,
77}
78
79impl WindowsPlatformState {
80 fn new(directx_devices: Option<DirectXDevices>) -> Self {
81 let callbacks = PlatformCallbacks::default();
82 let jump_list = JumpList::new();
83 let current_cursor = load_cursor(CursorStyle::Arrow);
84
85 Self {
86 callbacks,
87 jump_list: RefCell::new(jump_list),
88 current_cursor: Cell::new(current_cursor),
89 directx_devices: RefCell::new(directx_devices),
90 menus: RefCell::new(Vec::new()),
91 }
92 }
93}
94
95impl WindowsPlatform {
96 pub(crate) fn new(headless: bool) -> Result<Self> {
97 unsafe {
98 OleInitialize(None).context("unable to initialize Windows OLE")?;
99 }
100 let (directx_devices, text_system, direct_write_text_system) = if !headless {
101 let devices = DirectXDevices::new().context("Creating DirectX devices")?;
102 let dw_text_system = Arc::new(
103 DirectWriteTextSystem::new(&devices)
104 .context("Error creating DirectWriteTextSystem")?,
105 );
106 (
107 Some(devices),
108 dw_text_system.clone() as Arc<dyn PlatformTextSystem>,
109 Some(dw_text_system),
110 )
111 } else {
112 (
113 None,
114 Arc::new(crate::NoopTextSystem::new()) as Arc<dyn PlatformTextSystem>,
115 None,
116 )
117 };
118
119 let (main_sender, main_receiver) = PriorityQueueReceiver::new();
120 let validation_number = if usize::BITS == 64 {
121 rand::random::<u64>() as usize
122 } else {
123 rand::random::<u32>() as usize
124 };
125 let raw_window_handles = Arc::new(RwLock::new(SmallVec::new()));
126
127 register_platform_window_class();
128 let mut context = PlatformWindowCreateContext {
129 inner: None,
130 raw_window_handles: Arc::downgrade(&raw_window_handles),
131 validation_number,
132 main_sender: Some(main_sender),
133 main_receiver: Some(main_receiver),
134 directx_devices,
135 dispatcher: None,
136 };
137 let result = unsafe {
138 CreateWindowExW(
139 WINDOW_EX_STYLE(0),
140 PLATFORM_WINDOW_CLASS_NAME,
141 None,
142 WINDOW_STYLE(0),
143 0,
144 0,
145 0,
146 0,
147 Some(HWND_MESSAGE),
148 None,
149 None,
150 Some(&raw const context as *const _),
151 )
152 };
153 let inner = context
154 .inner
155 .take()
156 .context("CreateWindowExW did not run correctly")??;
157 let dispatcher = context
158 .dispatcher
159 .take()
160 .context("CreateWindowExW did not run correctly")?;
161 let handle = result?;
162
163 let disable_direct_composition = std::env::var(DISABLE_DIRECT_COMPOSITION)
164 .is_ok_and(|value| value == "true" || value == "1");
165 let background_executor = BackgroundExecutor::new(dispatcher.clone());
166 let foreground_executor = ForegroundExecutor::new(dispatcher);
167
168 let drop_target_helper: Option<IDropTargetHelper> = if !headless {
169 Some(unsafe {
170 CoCreateInstance(&CLSID_DragDropHelper, None, CLSCTX_INPROC_SERVER)
171 .context("Error creating drop target helper.")?
172 })
173 } else {
174 None
175 };
176 let icon = if !headless {
177 load_icon().unwrap_or_default()
178 } else {
179 HICON::default()
180 };
181
182 Ok(Self {
183 inner,
184 handle,
185 raw_window_handles,
186 headless,
187 icon,
188 background_executor,
189 foreground_executor,
190 text_system,
191 direct_write_text_system,
192 disable_direct_composition,
193 drop_target_helper,
194 invalidate_devices: Arc::new(AtomicBool::new(false)),
195 })
196 }
197
198 pub fn window_from_hwnd(&self, hwnd: HWND) -> Option<Rc<WindowsWindowInner>> {
199 self.raw_window_handles
200 .read()
201 .iter()
202 .find(|entry| entry.as_raw() == hwnd)
203 .and_then(|hwnd| window_from_hwnd(hwnd.as_raw()))
204 }
205
206 #[inline]
207 fn post_message(&self, message: u32, wparam: WPARAM, lparam: LPARAM) {
208 self.raw_window_handles
209 .read()
210 .iter()
211 .for_each(|handle| unsafe {
212 PostMessageW(Some(handle.as_raw()), message, wparam, lparam).log_err();
213 });
214 }
215
216 fn generate_creation_info(&self) -> WindowCreationInfo {
217 WindowCreationInfo {
218 icon: self.icon,
219 executor: self.foreground_executor.clone(),
220 current_cursor: self.inner.state.current_cursor.get(),
221 drop_target_helper: self.drop_target_helper.clone().unwrap(),
222 validation_number: self.inner.validation_number,
223 main_receiver: self.inner.main_receiver.clone(),
224 platform_window_handle: self.handle,
225 disable_direct_composition: self.disable_direct_composition,
226 directx_devices: self.inner.state.directx_devices.borrow().clone().unwrap(),
227 invalidate_devices: self.invalidate_devices.clone(),
228 }
229 }
230
231 fn set_dock_menus(&self, menus: Vec<MenuItem>) {
232 let mut actions = Vec::new();
233 menus.into_iter().for_each(|menu| {
234 if let Some(dock_menu) = DockMenuItem::new(menu).log_err() {
235 actions.push(dock_menu);
236 }
237 });
238 self.inner.state.jump_list.borrow_mut().dock_menus = actions;
239 let borrow = self.inner.state.jump_list.borrow();
240 let dock_menus = borrow
241 .dock_menus
242 .iter()
243 .map(|menu| (menu.name.clone(), menu.description.clone()))
244 .collect::<Vec<_>>();
245 let recent_workspaces = borrow.recent_workspaces.clone();
246 self.background_executor
247 .spawn(async move {
248 update_jump_list(&recent_workspaces, &dock_menus).log_err();
249 })
250 .detach();
251 }
252
253 fn update_jump_list(
254 &self,
255 menus: Vec<MenuItem>,
256 entries: Vec<SmallVec<[PathBuf; 2]>>,
257 ) -> Task<Vec<SmallVec<[PathBuf; 2]>>> {
258 let mut actions = Vec::new();
259 menus.into_iter().for_each(|menu| {
260 if let Some(dock_menu) = DockMenuItem::new(menu).log_err() {
261 actions.push(dock_menu);
262 }
263 });
264 let mut jump_list = self.inner.state.jump_list.borrow_mut();
265 jump_list.dock_menus = actions;
266 jump_list.recent_workspaces = entries.into();
267 let dock_menus = jump_list
268 .dock_menus
269 .iter()
270 .map(|menu| (menu.name.clone(), menu.description.clone()))
271 .collect::<Vec<_>>();
272 let recent_workspaces = jump_list.recent_workspaces.clone();
273 self.background_executor.spawn(async move {
274 update_jump_list(&recent_workspaces, &dock_menus)
275 .log_err()
276 .unwrap_or_default()
277 })
278 }
279
280 fn find_current_active_window(&self) -> Option<HWND> {
281 let active_window_hwnd = unsafe { GetActiveWindow() };
282 if active_window_hwnd.is_invalid() {
283 return None;
284 }
285 self.raw_window_handles
286 .read()
287 .iter()
288 .find(|hwnd| hwnd.as_raw() == active_window_hwnd)
289 .map(|hwnd| hwnd.as_raw())
290 }
291
292 fn begin_vsync_thread(&self) {
293 let Some(directx_devices) = self.inner.state.directx_devices.borrow().clone() else {
294 return;
295 };
296 let Some(direct_write_text_system) = &self.direct_write_text_system else {
297 return;
298 };
299 let mut directx_device = directx_devices;
300 let platform_window: SafeHwnd = self.handle.into();
301 let validation_number = self.inner.validation_number;
302 let all_windows = Arc::downgrade(&self.raw_window_handles);
303 let text_system = Arc::downgrade(direct_write_text_system);
304 let invalidate_devices = self.invalidate_devices.clone();
305
306 std::thread::Builder::new()
307 .name("VSyncProvider".to_owned())
308 .spawn(move || {
309 let vsync_provider = VSyncProvider::new();
310 loop {
311 vsync_provider.wait_for_vsync();
312 if check_device_lost(&directx_device.device)
313 || invalidate_devices.fetch_and(false, Ordering::Acquire)
314 {
315 if let Err(err) = handle_gpu_device_lost(
316 &mut directx_device,
317 platform_window.as_raw(),
318 validation_number,
319 &all_windows,
320 &text_system,
321 ) {
322 panic!("Device lost: {err}");
323 }
324 }
325 let Some(all_windows) = all_windows.upgrade() else {
326 break;
327 };
328 for hwnd in all_windows.read().iter() {
329 unsafe {
330 let _ = RedrawWindow(Some(hwnd.as_raw()), None, None, RDW_INVALIDATE);
331 }
332 }
333 }
334 })
335 .unwrap();
336 }
337}
338
339fn translate_accelerator(msg: &MSG) -> Option<()> {
340 if msg.message != WM_KEYDOWN && msg.message != WM_SYSKEYDOWN {
341 return None;
342 }
343
344 let result = unsafe {
345 SendMessageW(
346 msg.hwnd,
347 WM_GPUI_KEYDOWN,
348 Some(msg.wParam),
349 Some(msg.lParam),
350 )
351 };
352 (result.0 == 0).then_some(())
353}
354
355impl Platform for WindowsPlatform {
356 fn background_executor(&self) -> BackgroundExecutor {
357 self.background_executor.clone()
358 }
359
360 fn foreground_executor(&self) -> ForegroundExecutor {
361 self.foreground_executor.clone()
362 }
363
364 fn text_system(&self) -> Arc<dyn PlatformTextSystem> {
365 self.text_system.clone()
366 }
367
368 fn keyboard_layout(&self) -> Box<dyn PlatformKeyboardLayout> {
369 Box::new(
370 WindowsKeyboardLayout::new()
371 .log_err()
372 .unwrap_or(WindowsKeyboardLayout::unknown()),
373 )
374 }
375
376 fn keyboard_mapper(&self) -> Rc<dyn PlatformKeyboardMapper> {
377 Rc::new(WindowsKeyboardMapper::new())
378 }
379
380 fn on_keyboard_layout_change(&self, callback: Box<dyn FnMut()>) {
381 self.inner
382 .state
383 .callbacks
384 .keyboard_layout_change
385 .set(Some(callback));
386 }
387
388 fn on_thermal_state_change(&self, _callback: Box<dyn FnMut()>) {}
389
390 fn thermal_state(&self) -> ThermalState {
391 ThermalState::Nominal
392 }
393
394 fn run(&self, on_finish_launching: Box<dyn 'static + FnOnce()>) {
395 on_finish_launching();
396 if !self.headless {
397 self.begin_vsync_thread();
398 }
399
400 let mut msg = MSG::default();
401 unsafe {
402 while GetMessageW(&mut msg, None, 0, 0).as_bool() {
403 if translate_accelerator(&msg).is_none() {
404 _ = TranslateMessage(&msg);
405 DispatchMessageW(&msg);
406 }
407 }
408 }
409
410 self.inner
411 .with_callback(|callbacks| &callbacks.quit, |callback| callback());
412 }
413
414 fn quit(&self) {
415 self.foreground_executor()
416 .spawn(async { unsafe { PostQuitMessage(0) } })
417 .detach();
418 }
419
420 fn restart(&self, binary_path: Option<PathBuf>) {
421 let pid = std::process::id();
422 let Some(app_path) = binary_path.or(self.app_path().log_err()) else {
423 return;
424 };
425 let script = format!(
426 r#"
427 $pidToWaitFor = {}
428 $exePath = "{}"
429
430 while ($true) {{
431 $process = Get-Process -Id $pidToWaitFor -ErrorAction SilentlyContinue
432 if (-not $process) {{
433 Start-Process -FilePath $exePath
434 break
435 }}
436 Start-Sleep -Seconds 0.1
437 }}
438 "#,
439 pid,
440 app_path.display(),
441 );
442
443 // Defer spawning to the foreground executor so it runs after the
444 // current `AppCell` borrow is released. On Windows, `Command::spawn()`
445 // can pump the Win32 message loop (via `CreateProcessW`), which
446 // re-enters message handling possibly resulting in another mutable
447 // borrow of the `AppCell` ending up with a double borrow panic
448 self.foreground_executor
449 .spawn(async move {
450 #[allow(
451 clippy::disallowed_methods,
452 reason = "We are restarting ourselves, using std command thus is fine"
453 )]
454 let restart_process =
455 util::command::new_std_command(util::shell::get_windows_system_shell())
456 .arg("-command")
457 .arg(script)
458 .spawn();
459
460 match restart_process {
461 Ok(_) => unsafe { PostQuitMessage(0) },
462 Err(e) => log::error!("failed to spawn restart script: {:?}", e),
463 }
464 })
465 .detach();
466 }
467
468 fn activate(&self, _ignoring_other_apps: bool) {}
469
470 fn hide(&self) {}
471
472 // todo(windows)
473 fn hide_other_apps(&self) {
474 unimplemented!()
475 }
476
477 // todo(windows)
478 fn unhide_other_apps(&self) {
479 unimplemented!()
480 }
481
482 fn displays(&self) -> Vec<Rc<dyn PlatformDisplay>> {
483 WindowsDisplay::displays()
484 }
485
486 fn primary_display(&self) -> Option<Rc<dyn PlatformDisplay>> {
487 WindowsDisplay::primary_monitor().map(|display| Rc::new(display) as Rc<dyn PlatformDisplay>)
488 }
489
490 #[cfg(feature = "screen-capture")]
491 fn is_screen_capture_supported(&self) -> bool {
492 true
493 }
494
495 #[cfg(feature = "screen-capture")]
496 fn screen_capture_sources(
497 &self,
498 ) -> oneshot::Receiver<Result<Vec<Rc<dyn ScreenCaptureSource>>>> {
499 crate::platform::scap_screen_capture::scap_screen_sources(&self.foreground_executor)
500 }
501
502 fn active_window(&self) -> Option<AnyWindowHandle> {
503 let active_window_hwnd = unsafe { GetActiveWindow() };
504 self.window_from_hwnd(active_window_hwnd)
505 .map(|inner| inner.handle)
506 }
507
508 fn open_window(
509 &self,
510 handle: AnyWindowHandle,
511 options: WindowParams,
512 ) -> Result<Box<dyn PlatformWindow>> {
513 let window = WindowsWindow::new(handle, options, self.generate_creation_info())?;
514 let handle = window.get_raw_handle();
515 self.raw_window_handles.write().push(handle.into());
516
517 Ok(Box::new(window))
518 }
519
520 fn window_appearance(&self) -> WindowAppearance {
521 system_appearance().log_err().unwrap_or_default()
522 }
523
524 fn open_url(&self, url: &str) {
525 if url.is_empty() {
526 return;
527 }
528 let url_string = url.to_string();
529 self.background_executor()
530 .spawn(async move {
531 open_target(&url_string)
532 .with_context(|| format!("Opening url: {}", url_string))
533 .log_err();
534 })
535 .detach();
536 }
537
538 fn on_open_urls(&self, callback: Box<dyn FnMut(Vec<String>)>) {
539 self.inner.state.callbacks.open_urls.set(Some(callback));
540 }
541
542 fn prompt_for_paths(
543 &self,
544 options: PathPromptOptions,
545 ) -> Receiver<Result<Option<Vec<PathBuf>>>> {
546 let (tx, rx) = oneshot::channel();
547 let window = self.find_current_active_window();
548 self.foreground_executor()
549 .spawn(async move {
550 let _ = tx.send(file_open_dialog(options, window));
551 })
552 .detach();
553
554 rx
555 }
556
557 fn prompt_for_new_path(
558 &self,
559 directory: &Path,
560 suggested_name: Option<&str>,
561 ) -> Receiver<Result<Option<PathBuf>>> {
562 let directory = directory.to_owned();
563 let suggested_name = suggested_name.map(|s| s.to_owned());
564 let (tx, rx) = oneshot::channel();
565 let window = self.find_current_active_window();
566 self.foreground_executor()
567 .spawn(async move {
568 let _ = tx.send(file_save_dialog(directory, suggested_name, window));
569 })
570 .detach();
571
572 rx
573 }
574
575 fn can_select_mixed_files_and_dirs(&self) -> bool {
576 // The FOS_PICKFOLDERS flag toggles between "only files" and "only folders".
577 false
578 }
579
580 fn reveal_path(&self, path: &Path) {
581 if path.as_os_str().is_empty() {
582 return;
583 }
584 let path = path.to_path_buf();
585 self.background_executor()
586 .spawn(async move {
587 open_target_in_explorer(&path)
588 .with_context(|| format!("Revealing path {} in explorer", path.display()))
589 .log_err();
590 })
591 .detach();
592 }
593
594 fn open_with_system(&self, path: &Path) {
595 if path.as_os_str().is_empty() {
596 return;
597 }
598 let path = path.to_path_buf();
599 self.background_executor()
600 .spawn(async move {
601 open_target(&path)
602 .with_context(|| format!("Opening {} with system", path.display()))
603 .log_err();
604 })
605 .detach();
606 }
607
608 fn on_quit(&self, callback: Box<dyn FnMut()>) {
609 self.inner.state.callbacks.quit.set(Some(callback));
610 }
611
612 fn on_reopen(&self, callback: Box<dyn FnMut()>) {
613 self.inner.state.callbacks.reopen.set(Some(callback));
614 }
615
616 fn set_menus(&self, menus: Vec<Menu>, _keymap: &Keymap) {
617 *self.inner.state.menus.borrow_mut() = menus.into_iter().map(|menu| menu.owned()).collect();
618 }
619
620 fn get_menus(&self) -> Option<Vec<OwnedMenu>> {
621 Some(self.inner.state.menus.borrow().clone())
622 }
623
624 fn set_dock_menu(&self, menus: Vec<MenuItem>, _keymap: &Keymap) {
625 self.set_dock_menus(menus);
626 }
627
628 fn on_app_menu_action(&self, callback: Box<dyn FnMut(&dyn Action)>) {
629 self.inner
630 .state
631 .callbacks
632 .app_menu_action
633 .set(Some(callback));
634 }
635
636 fn on_will_open_app_menu(&self, callback: Box<dyn FnMut()>) {
637 self.inner
638 .state
639 .callbacks
640 .will_open_app_menu
641 .set(Some(callback));
642 }
643
644 fn on_validate_app_menu_command(&self, callback: Box<dyn FnMut(&dyn Action) -> bool>) {
645 self.inner
646 .state
647 .callbacks
648 .validate_app_menu_command
649 .set(Some(callback));
650 }
651
652 fn app_path(&self) -> Result<PathBuf> {
653 Ok(std::env::current_exe()?)
654 }
655
656 // todo(windows)
657 fn path_for_auxiliary_executable(&self, _name: &str) -> Result<PathBuf> {
658 anyhow::bail!("not yet implemented");
659 }
660
661 fn set_cursor_style(&self, style: CursorStyle) {
662 let hcursor = load_cursor(style);
663 if self.inner.state.current_cursor.get().map(|c| c.0) != hcursor.map(|c| c.0) {
664 self.post_message(
665 WM_GPUI_CURSOR_STYLE_CHANGED,
666 WPARAM(0),
667 LPARAM(hcursor.map_or(0, |c| c.0 as isize)),
668 );
669 self.inner.state.current_cursor.set(hcursor);
670 }
671 }
672
673 fn should_auto_hide_scrollbars(&self) -> bool {
674 should_auto_hide_scrollbars().log_err().unwrap_or(false)
675 }
676
677 fn write_to_clipboard(&self, item: ClipboardItem) {
678 write_to_clipboard(item);
679 }
680
681 fn read_from_clipboard(&self) -> Option<ClipboardItem> {
682 read_from_clipboard()
683 }
684
685 fn write_credentials(&self, url: &str, username: &str, password: &[u8]) -> Task<Result<()>> {
686 let mut password = password.to_vec();
687 let mut username = username.encode_utf16().chain(Some(0)).collect_vec();
688 let mut target_name = windows_credentials_target_name(url)
689 .encode_utf16()
690 .chain(Some(0))
691 .collect_vec();
692 self.foreground_executor().spawn(async move {
693 let credentials = CREDENTIALW {
694 LastWritten: unsafe { GetSystemTimeAsFileTime() },
695 Flags: CRED_FLAGS(0),
696 Type: CRED_TYPE_GENERIC,
697 TargetName: PWSTR::from_raw(target_name.as_mut_ptr()),
698 CredentialBlobSize: password.len() as u32,
699 CredentialBlob: password.as_ptr() as *mut _,
700 Persist: CRED_PERSIST_LOCAL_MACHINE,
701 UserName: PWSTR::from_raw(username.as_mut_ptr()),
702 ..CREDENTIALW::default()
703 };
704 unsafe {
705 CredWriteW(&credentials, 0).map_err(|err| {
706 anyhow!(
707 "Failed to write credentials to Windows Credential Manager: {}",
708 err,
709 )
710 })?;
711 }
712 Ok(())
713 })
714 }
715
716 fn read_credentials(&self, url: &str) -> Task<Result<Option<(String, Vec<u8>)>>> {
717 let mut target_name = windows_credentials_target_name(url)
718 .encode_utf16()
719 .chain(Some(0))
720 .collect_vec();
721 self.foreground_executor().spawn(async move {
722 let mut credentials: *mut CREDENTIALW = std::ptr::null_mut();
723 let result = unsafe {
724 CredReadW(
725 PCWSTR::from_raw(target_name.as_ptr()),
726 CRED_TYPE_GENERIC,
727 None,
728 &mut credentials,
729 )
730 };
731
732 if let Err(err) = result {
733 // ERROR_NOT_FOUND means the credential doesn't exist.
734 // Return Ok(None) to match macOS and Linux behavior.
735 if err.code() == ERROR_NOT_FOUND.to_hresult() {
736 return Ok(None);
737 }
738 return Err(err.into());
739 }
740
741 if credentials.is_null() {
742 Ok(None)
743 } else {
744 let username: String = unsafe { (*credentials).UserName.to_string()? };
745 let credential_blob = unsafe {
746 std::slice::from_raw_parts(
747 (*credentials).CredentialBlob,
748 (*credentials).CredentialBlobSize as usize,
749 )
750 };
751 let password = credential_blob.to_vec();
752 unsafe { CredFree(credentials as *const _ as _) };
753 Ok(Some((username, password)))
754 }
755 })
756 }
757
758 fn delete_credentials(&self, url: &str) -> Task<Result<()>> {
759 let mut target_name = windows_credentials_target_name(url)
760 .encode_utf16()
761 .chain(Some(0))
762 .collect_vec();
763 self.foreground_executor().spawn(async move {
764 unsafe {
765 CredDeleteW(
766 PCWSTR::from_raw(target_name.as_ptr()),
767 CRED_TYPE_GENERIC,
768 None,
769 )?
770 };
771 Ok(())
772 })
773 }
774
775 fn register_url_scheme(&self, _: &str) -> Task<anyhow::Result<()>> {
776 Task::ready(Err(anyhow!("register_url_scheme unimplemented")))
777 }
778
779 fn perform_dock_menu_action(&self, action: usize) {
780 unsafe {
781 PostMessageW(
782 Some(self.handle),
783 WM_GPUI_DOCK_MENU_ACTION,
784 WPARAM(self.inner.validation_number),
785 LPARAM(action as isize),
786 )
787 .log_err();
788 }
789 }
790
791 fn update_jump_list(
792 &self,
793 menus: Vec<MenuItem>,
794 entries: Vec<SmallVec<[PathBuf; 2]>>,
795 ) -> Task<Vec<SmallVec<[PathBuf; 2]>>> {
796 self.update_jump_list(menus, entries)
797 }
798}
799
800impl WindowsPlatformInner {
801 fn new(context: &mut PlatformWindowCreateContext) -> Result<Rc<Self>> {
802 let state = WindowsPlatformState::new(context.directx_devices.take());
803 Ok(Rc::new(Self {
804 state,
805 raw_window_handles: context.raw_window_handles.clone(),
806 dispatcher: context
807 .dispatcher
808 .as_ref()
809 .context("missing dispatcher")?
810 .clone(),
811 validation_number: context.validation_number,
812 main_receiver: context
813 .main_receiver
814 .take()
815 .context("missing main receiver")?,
816 }))
817 }
818
819 /// Calls `project` to project to the corresponding callback field, removes it from callbacks, calls `f` with the callback and then puts the callback back.
820 fn with_callback<T>(
821 &self,
822 project: impl Fn(&PlatformCallbacks) -> &Cell<Option<T>>,
823 f: impl FnOnce(&mut T),
824 ) {
825 let callback = project(&self.state.callbacks).take();
826 if let Some(mut callback) = callback {
827 f(&mut callback);
828 project(&self.state.callbacks).set(Some(callback));
829 }
830 }
831
832 fn handle_msg(
833 self: &Rc<Self>,
834 handle: HWND,
835 msg: u32,
836 wparam: WPARAM,
837 lparam: LPARAM,
838 ) -> LRESULT {
839 let handled = match msg {
840 WM_GPUI_CLOSE_ONE_WINDOW
841 | WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD
842 | WM_GPUI_DOCK_MENU_ACTION
843 | WM_GPUI_KEYBOARD_LAYOUT_CHANGED
844 | WM_GPUI_GPU_DEVICE_LOST => self.handle_gpui_events(msg, wparam, lparam),
845 _ => None,
846 };
847 if let Some(result) = handled {
848 LRESULT(result)
849 } else {
850 unsafe { DefWindowProcW(handle, msg, wparam, lparam) }
851 }
852 }
853
854 fn handle_gpui_events(&self, message: u32, wparam: WPARAM, lparam: LPARAM) -> Option<isize> {
855 if wparam.0 != self.validation_number {
856 log::error!("Wrong validation number while processing message: {message}");
857 return None;
858 }
859 match message {
860 WM_GPUI_CLOSE_ONE_WINDOW => {
861 self.close_one_window(HWND(lparam.0 as _));
862 Some(0)
863 }
864 WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD => self.run_foreground_task(),
865 WM_GPUI_DOCK_MENU_ACTION => self.handle_dock_action_event(lparam.0 as _),
866 WM_GPUI_KEYBOARD_LAYOUT_CHANGED => self.handle_keyboard_layout_change(),
867 WM_GPUI_GPU_DEVICE_LOST => self.handle_device_lost(lparam),
868 _ => unreachable!(),
869 }
870 }
871
872 fn close_one_window(&self, target_window: HWND) -> bool {
873 let Some(all_windows) = self.raw_window_handles.upgrade() else {
874 log::error!("Failed to upgrade raw window handles");
875 return false;
876 };
877 let mut lock = all_windows.write();
878 let index = lock
879 .iter()
880 .position(|handle| handle.as_raw() == target_window)
881 .unwrap();
882 lock.remove(index);
883
884 lock.is_empty()
885 }
886
887 #[inline]
888 fn run_foreground_task(&self) -> Option<isize> {
889 const MAIN_TASK_TIMEOUT: u128 = 10;
890
891 let start = std::time::Instant::now();
892 'tasks: loop {
893 'timeout_loop: loop {
894 if start.elapsed().as_millis() >= MAIN_TASK_TIMEOUT {
895 log::debug!("foreground task timeout reached");
896 // we spent our budget on gpui tasks, we likely have a lot of work queued so drain system events first to stay responsive
897 // then quit out of foreground work to allow us to process other gpui events first before returning back to foreground task work
898 // if we don't we might not for example process window quit events
899 let mut msg = MSG::default();
900 let process_message = |msg: &_| {
901 if translate_accelerator(msg).is_none() {
902 _ = unsafe { TranslateMessage(msg) };
903 unsafe { DispatchMessageW(msg) };
904 }
905 };
906 let peek_msg = |msg: &mut _, msg_kind| unsafe {
907 PeekMessageW(msg, None, 0, 0, PM_REMOVE | msg_kind).as_bool()
908 };
909 // We need to process a paint message here as otherwise we will re-enter `run_foreground_task` before painting if we have work remaining.
910 // The reason for this is that windows prefers custom application message processing over system messages.
911 if peek_msg(&mut msg, PM_QS_PAINT) {
912 process_message(&msg);
913 }
914 while peek_msg(&mut msg, PM_QS_INPUT) {
915 process_message(&msg);
916 }
917 // Allow the main loop to process other gpui events before going back into `run_foreground_task`
918 unsafe {
919 if let Err(_) = PostMessageW(
920 Some(self.dispatcher.platform_window_handle.as_raw()),
921 WM_GPUI_TASK_DISPATCHED_ON_MAIN_THREAD,
922 WPARAM(self.validation_number),
923 LPARAM(0),
924 ) {
925 self.dispatcher.wake_posted.store(false, Ordering::Release);
926 };
927 }
928 break 'tasks;
929 }
930 let mut main_receiver = self.main_receiver.clone();
931 match main_receiver.try_pop() {
932 Ok(Some(runnable)) => WindowsDispatcher::execute_runnable(runnable),
933 _ => break 'timeout_loop,
934 }
935 }
936
937 // Someone could enqueue a Runnable here. The flag is still true, so they will not PostMessage.
938 // We need to check for those Runnables after we clear the flag.
939 self.dispatcher.wake_posted.store(false, Ordering::Release);
940 let mut main_receiver = self.main_receiver.clone();
941 match main_receiver.try_pop() {
942 Ok(Some(runnable)) => {
943 self.dispatcher.wake_posted.store(true, Ordering::Release);
944
945 WindowsDispatcher::execute_runnable(runnable);
946 }
947 _ => break 'tasks,
948 }
949 }
950
951 Some(0)
952 }
953
954 fn handle_dock_action_event(&self, action_idx: usize) -> Option<isize> {
955 let Some(action) = self
956 .state
957 .jump_list
958 .borrow()
959 .dock_menus
960 .get(action_idx)
961 .map(|dock_menu| dock_menu.action.boxed_clone())
962 else {
963 log::error!("Dock menu for index {action_idx} not found");
964 return Some(1);
965 };
966 self.with_callback(
967 |callbacks| &callbacks.app_menu_action,
968 |callback| callback(&*action),
969 );
970 Some(0)
971 }
972
973 fn handle_keyboard_layout_change(&self) -> Option<isize> {
974 self.with_callback(
975 |callbacks| &callbacks.keyboard_layout_change,
976 |callback| callback(),
977 );
978 Some(0)
979 }
980
981 fn handle_device_lost(&self, lparam: LPARAM) -> Option<isize> {
982 let directx_devices = lparam.0 as *const DirectXDevices;
983 let directx_devices = unsafe { &*directx_devices };
984 self.state.directx_devices.borrow_mut().take();
985 *self.state.directx_devices.borrow_mut() = Some(directx_devices.clone());
986
987 Some(0)
988 }
989}
990
991impl Drop for WindowsPlatform {
992 fn drop(&mut self) {
993 unsafe {
994 DestroyWindow(self.handle)
995 .context("Destroying platform window")
996 .log_err();
997 OleUninitialize();
998 }
999 }
1000}
1001
1002pub(crate) struct WindowCreationInfo {
1003 pub(crate) icon: HICON,
1004 pub(crate) executor: ForegroundExecutor,
1005 pub(crate) current_cursor: Option<HCURSOR>,
1006 pub(crate) drop_target_helper: IDropTargetHelper,
1007 pub(crate) validation_number: usize,
1008 pub(crate) main_receiver: PriorityQueueReceiver<RunnableVariant>,
1009 pub(crate) platform_window_handle: HWND,
1010 pub(crate) disable_direct_composition: bool,
1011 pub(crate) directx_devices: DirectXDevices,
1012 /// Flag to instruct the `VSyncProvider` thread to invalidate the directx devices
1013 /// as resizing them has failed, causing us to have lost at least the render target.
1014 pub(crate) invalidate_devices: Arc<AtomicBool>,
1015}
1016
1017struct PlatformWindowCreateContext {
1018 inner: Option<Result<Rc<WindowsPlatformInner>>>,
1019 raw_window_handles: std::sync::Weak<RwLock<SmallVec<[SafeHwnd; 4]>>>,
1020 validation_number: usize,
1021 main_sender: Option<PriorityQueueSender<RunnableVariant>>,
1022 main_receiver: Option<PriorityQueueReceiver<RunnableVariant>>,
1023 directx_devices: Option<DirectXDevices>,
1024 dispatcher: Option<Arc<WindowsDispatcher>>,
1025}
1026
1027fn open_target(target: impl AsRef<OsStr>) -> Result<()> {
1028 let target = target.as_ref();
1029 let ret = unsafe {
1030 ShellExecuteW(
1031 None,
1032 windows::core::w!("open"),
1033 &HSTRING::from(target),
1034 None,
1035 None,
1036 SW_SHOWDEFAULT,
1037 )
1038 };
1039 if ret.0 as isize <= 32 {
1040 Err(anyhow::anyhow!(
1041 "Unable to open target: {}",
1042 std::io::Error::last_os_error()
1043 ))
1044 } else {
1045 Ok(())
1046 }
1047}
1048
1049fn open_target_in_explorer(target: &Path) -> Result<()> {
1050 let dir = target.parent().context("No parent folder found")?;
1051 let desktop = unsafe { SHGetDesktopFolder()? };
1052
1053 let mut dir_item = std::ptr::null_mut();
1054 unsafe {
1055 desktop.ParseDisplayName(
1056 HWND::default(),
1057 None,
1058 &HSTRING::from(dir),
1059 None,
1060 &mut dir_item,
1061 std::ptr::null_mut(),
1062 )?;
1063 }
1064
1065 let mut file_item = std::ptr::null_mut();
1066 unsafe {
1067 desktop.ParseDisplayName(
1068 HWND::default(),
1069 None,
1070 &HSTRING::from(target),
1071 None,
1072 &mut file_item,
1073 std::ptr::null_mut(),
1074 )?;
1075 }
1076
1077 let highlight = [file_item as *const _];
1078 unsafe { SHOpenFolderAndSelectItems(dir_item as _, Some(&highlight), 0) }.or_else(|err| {
1079 if err.code().0 == ERROR_FILE_NOT_FOUND.0 as i32 {
1080 // On some systems, the above call mysteriously fails with "file not
1081 // found" even though the file is there. In these cases, ShellExecute()
1082 // seems to work as a fallback (although it won't select the file).
1083 open_target(dir).context("Opening target parent folder")
1084 } else {
1085 Err(anyhow::anyhow!("Can not open target path: {}", err))
1086 }
1087 })
1088}
1089
1090fn file_open_dialog(
1091 options: PathPromptOptions,
1092 window: Option<HWND>,
1093) -> Result<Option<Vec<PathBuf>>> {
1094 let folder_dialog: IFileOpenDialog =
1095 unsafe { CoCreateInstance(&FileOpenDialog, None, CLSCTX_ALL)? };
1096
1097 let mut dialog_options = FOS_FILEMUSTEXIST;
1098 if options.multiple {
1099 dialog_options |= FOS_ALLOWMULTISELECT;
1100 }
1101 if options.directories {
1102 dialog_options |= FOS_PICKFOLDERS;
1103 }
1104
1105 unsafe {
1106 folder_dialog.SetOptions(dialog_options)?;
1107
1108 if let Some(prompt) = options.prompt {
1109 let prompt: &str = &prompt;
1110 folder_dialog.SetOkButtonLabel(&HSTRING::from(prompt))?;
1111 }
1112
1113 if folder_dialog.Show(window).is_err() {
1114 // User cancelled
1115 return Ok(None);
1116 }
1117 }
1118
1119 let results = unsafe { folder_dialog.GetResults()? };
1120 let file_count = unsafe { results.GetCount()? };
1121 if file_count == 0 {
1122 return Ok(None);
1123 }
1124
1125 let mut paths = Vec::with_capacity(file_count as usize);
1126 for i in 0..file_count {
1127 let item = unsafe { results.GetItemAt(i)? };
1128 let path = unsafe { item.GetDisplayName(SIGDN_FILESYSPATH)?.to_string()? };
1129 paths.push(PathBuf::from(path));
1130 }
1131
1132 Ok(Some(paths))
1133}
1134
1135fn file_save_dialog(
1136 directory: PathBuf,
1137 suggested_name: Option<String>,
1138 window: Option<HWND>,
1139) -> Result<Option<PathBuf>> {
1140 let dialog: IFileSaveDialog = unsafe { CoCreateInstance(&FileSaveDialog, None, CLSCTX_ALL)? };
1141 if !directory.to_string_lossy().is_empty()
1142 && let Some(full_path) = directory
1143 .canonicalize()
1144 .context("failed to canonicalize directory")
1145 .log_err()
1146 {
1147 let full_path = SanitizedPath::new(&full_path);
1148 let full_path_string = full_path.to_string();
1149 let path_item: IShellItem =
1150 unsafe { SHCreateItemFromParsingName(&HSTRING::from(full_path_string), None)? };
1151 unsafe {
1152 dialog
1153 .SetFolder(&path_item)
1154 .context("failed to set dialog folder")
1155 .log_err()
1156 };
1157 }
1158
1159 if let Some(suggested_name) = suggested_name {
1160 unsafe {
1161 dialog
1162 .SetFileName(&HSTRING::from(suggested_name))
1163 .context("failed to set file name")
1164 .log_err()
1165 };
1166 }
1167
1168 unsafe {
1169 dialog.SetFileTypes(&[Common::COMDLG_FILTERSPEC {
1170 pszName: windows::core::w!("All files"),
1171 pszSpec: windows::core::w!("*.*"),
1172 }])?;
1173 if dialog.Show(window).is_err() {
1174 // User cancelled
1175 return Ok(None);
1176 }
1177 }
1178 let shell_item = unsafe { dialog.GetResult()? };
1179 let file_path_string = unsafe {
1180 let pwstr = shell_item.GetDisplayName(SIGDN_FILESYSPATH)?;
1181 let string = pwstr.to_string()?;
1182 CoTaskMemFree(Some(pwstr.0 as _));
1183 string
1184 };
1185 Ok(Some(PathBuf::from(file_path_string)))
1186}
1187
1188fn load_icon() -> Result<HICON> {
1189 let module = unsafe { GetModuleHandleW(None).context("unable to get module handle")? };
1190 let handle = unsafe {
1191 LoadImageW(
1192 Some(module.into()),
1193 windows::core::PCWSTR(1 as _),
1194 IMAGE_ICON,
1195 0,
1196 0,
1197 LR_DEFAULTSIZE | LR_SHARED,
1198 )
1199 .context("unable to load icon file")?
1200 };
1201 Ok(HICON(handle.0))
1202}
1203
1204#[inline]
1205fn should_auto_hide_scrollbars() -> Result<bool> {
1206 let ui_settings = UISettings::new()?;
1207 Ok(ui_settings.AutoHideScrollBars()?)
1208}
1209
1210fn check_device_lost(device: &ID3D11Device) -> bool {
1211 let device_state = unsafe { device.GetDeviceRemovedReason() };
1212 match device_state {
1213 Ok(_) => false,
1214 Err(err) => {
1215 log::error!("DirectX device lost detected: {:?}", err);
1216 true
1217 }
1218 }
1219}
1220
1221fn handle_gpu_device_lost(
1222 directx_devices: &mut DirectXDevices,
1223 platform_window: HWND,
1224 validation_number: usize,
1225 all_windows: &std::sync::Weak<RwLock<SmallVec<[SafeHwnd; 4]>>>,
1226 text_system: &std::sync::Weak<DirectWriteTextSystem>,
1227) -> Result<()> {
1228 // Here we wait a bit to ensure the system has time to recover from the device lost state.
1229 // If we don't wait, the final drawing result will be blank.
1230 std::thread::sleep(std::time::Duration::from_millis(350));
1231
1232 *directx_devices = try_to_recover_from_device_lost(|| {
1233 DirectXDevices::new().context("Failed to recreate new DirectX devices after device lost")
1234 })?;
1235 log::info!("DirectX devices successfully recreated.");
1236
1237 let lparam = LPARAM(directx_devices as *const _ as _);
1238 unsafe {
1239 SendMessageW(
1240 platform_window,
1241 WM_GPUI_GPU_DEVICE_LOST,
1242 Some(WPARAM(validation_number)),
1243 Some(lparam),
1244 );
1245 }
1246
1247 if let Some(text_system) = text_system.upgrade() {
1248 text_system.handle_gpu_lost(&directx_devices)?;
1249 }
1250 if let Some(all_windows) = all_windows.upgrade() {
1251 for window in all_windows.read().iter() {
1252 unsafe {
1253 SendMessageW(
1254 window.as_raw(),
1255 WM_GPUI_GPU_DEVICE_LOST,
1256 Some(WPARAM(validation_number)),
1257 Some(lparam),
1258 );
1259 }
1260 }
1261 std::thread::sleep(std::time::Duration::from_millis(200));
1262 for window in all_windows.read().iter() {
1263 unsafe {
1264 SendMessageW(
1265 window.as_raw(),
1266 WM_GPUI_FORCE_UPDATE_WINDOW,
1267 Some(WPARAM(validation_number)),
1268 None,
1269 );
1270 }
1271 }
1272 }
1273 Ok(())
1274}
1275
1276const PLATFORM_WINDOW_CLASS_NAME: PCWSTR = w!("Zed::PlatformWindow");
1277
1278fn register_platform_window_class() {
1279 let wc = WNDCLASSW {
1280 lpfnWndProc: Some(window_procedure),
1281 lpszClassName: PCWSTR(PLATFORM_WINDOW_CLASS_NAME.as_ptr()),
1282 ..Default::default()
1283 };
1284 unsafe { RegisterClassW(&wc) };
1285}
1286
1287unsafe extern "system" fn window_procedure(
1288 hwnd: HWND,
1289 msg: u32,
1290 wparam: WPARAM,
1291 lparam: LPARAM,
1292) -> LRESULT {
1293 if msg == WM_NCCREATE {
1294 let params = unsafe { &*(lparam.0 as *const CREATESTRUCTW) };
1295 let creation_context = params.lpCreateParams as *mut PlatformWindowCreateContext;
1296 let creation_context = unsafe { &mut *creation_context };
1297
1298 let Some(main_sender) = creation_context.main_sender.take() else {
1299 creation_context.inner = Some(Err(anyhow!("missing main sender")));
1300 return LRESULT(0);
1301 };
1302 creation_context.dispatcher = Some(Arc::new(WindowsDispatcher::new(
1303 main_sender,
1304 hwnd,
1305 creation_context.validation_number,
1306 )));
1307
1308 return match WindowsPlatformInner::new(creation_context) {
1309 Ok(inner) => {
1310 let weak = Box::new(Rc::downgrade(&inner));
1311 unsafe { set_window_long(hwnd, GWLP_USERDATA, Box::into_raw(weak) as isize) };
1312 creation_context.inner = Some(Ok(inner));
1313 unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) }
1314 }
1315 Err(error) => {
1316 creation_context.inner = Some(Err(error));
1317 LRESULT(0)
1318 }
1319 };
1320 }
1321
1322 let ptr = unsafe { get_window_long(hwnd, GWLP_USERDATA) } as *mut Weak<WindowsPlatformInner>;
1323 if ptr.is_null() {
1324 return unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) };
1325 }
1326 let inner = unsafe { &*ptr };
1327 let result = if let Some(inner) = inner.upgrade() {
1328 inner.handle_msg(hwnd, msg, wparam, lparam)
1329 } else {
1330 unsafe { DefWindowProcW(hwnd, msg, wparam, lparam) }
1331 };
1332
1333 if msg == WM_NCDESTROY {
1334 unsafe { set_window_long(hwnd, GWLP_USERDATA, 0) };
1335 unsafe { drop(Box::from_raw(ptr)) };
1336 }
1337
1338 result
1339}
1340
1341#[cfg(test)]
1342mod tests {
1343 use crate::{ClipboardItem, read_from_clipboard, write_to_clipboard};
1344
1345 #[test]
1346 fn test_clipboard() {
1347 let item = ClipboardItem::new_string("你好，我是张小白".to_string());
1348 write_to_clipboard(item.clone());
1349 assert_eq!(read_from_clipboard(), Some(item));
1350
1351 let item = ClipboardItem::new_string("12345".to_string());
1352 write_to_clipboard(item.clone());
1353 assert_eq!(read_from_clipboard(), Some(item));
1354
1355 let item = ClipboardItem::new_string_with_json_metadata("abcdef".to_string(), vec![3, 4]);
1356 write_to_clipboard(item.clone());
1357 assert_eq!(read_from_clipboard(), Some(item));
1358 }
1359}