1use crate::{
2 executor,
3 geometry::{
4 rect::RectF,
5 vector::{vec2f, Vector2F},
6 },
7 keymap_matcher::Keystroke,
8 platform::{
9 self,
10 mac::{
11 platform::NSViewLayerContentsRedrawDuringViewResize, renderer::Renderer, screen::Screen,
12 },
13 Event, InputHandler, KeyDownEvent, ModifiersChangedEvent, MouseButton, MouseButtonEvent,
14 MouseMovedEvent, Scene, WindowBounds, WindowKind,
15 },
16};
17use block::ConcreteBlock;
18use cocoa::{
19 appkit::{
20 CGPoint, NSApplication, NSBackingStoreBuffered, NSScreen, NSView, NSViewHeightSizable,
21 NSViewWidthSizable, NSWindow, NSWindowButton, NSWindowCollectionBehavior,
22 NSWindowStyleMask, NSWindowTitleVisibility,
23 },
24 base::{id, nil},
25 foundation::{NSAutoreleasePool, NSInteger, NSPoint, NSRect, NSSize, NSString, NSUInteger},
26};
27use core_graphics::display::CGRect;
28use ctor::ctor;
29use foreign_types::ForeignTypeRef;
30use objc::{
31 class,
32 declare::ClassDecl,
33 msg_send,
34 runtime::{Class, Object, Protocol, Sel, BOOL, NO, YES},
35 sel, sel_impl,
36};
37use postage::oneshot;
38use smol::Timer;
39use std::{
40 any::Any,
41 cell::{Cell, RefCell},
42 convert::TryInto,
43 ffi::{c_void, CStr},
44 mem,
45 ops::Range,
46 os::raw::c_char,
47 ptr,
48 rc::{Rc, Weak},
49 sync::Arc,
50 time::Duration,
51};
52
53use super::{
54 geometry::{NSRectExt, Vector2FExt},
55 ns_string, NSRange,
56};
57
58const WINDOW_STATE_IVAR: &str = "windowState";
59
60static mut WINDOW_CLASS: *const Class = ptr::null();
61static mut PANEL_CLASS: *const Class = ptr::null();
62static mut VIEW_CLASS: *const Class = ptr::null();
63
64#[allow(non_upper_case_globals)]
65const NSWindowStyleMaskNonactivatingPanel: NSWindowStyleMask =
66 unsafe { NSWindowStyleMask::from_bits_unchecked(1 << 7) };
67#[allow(non_upper_case_globals)]
68const NSNormalWindowLevel: NSInteger = 0;
69#[allow(non_upper_case_globals)]
70const NSPopUpWindowLevel: NSInteger = 101;
71#[allow(non_upper_case_globals)]
72const NSTrackingMouseEnteredAndExited: NSUInteger = 0x01;
73#[allow(non_upper_case_globals)]
74const NSTrackingMouseMoved: NSUInteger = 0x02;
75#[allow(non_upper_case_globals)]
76const NSTrackingActiveAlways: NSUInteger = 0x80;
77#[allow(non_upper_case_globals)]
78const NSTrackingInVisibleRect: NSUInteger = 0x200;
79#[allow(non_upper_case_globals)]
80const NSWindowAnimationBehaviorUtilityWindow: NSInteger = 4;
81
82#[ctor]
83unsafe fn build_classes() {
84 WINDOW_CLASS = build_window_class("GPUIWindow", class!(NSWindow));
85 PANEL_CLASS = build_window_class("GPUIPanel", class!(NSPanel));
86 VIEW_CLASS = {
87 let mut decl = ClassDecl::new("GPUIView", class!(NSView)).unwrap();
88 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
89
90 decl.add_method(sel!(dealloc), dealloc_view as extern "C" fn(&Object, Sel));
91
92 decl.add_method(
93 sel!(performKeyEquivalent:),
94 handle_key_equivalent as extern "C" fn(&Object, Sel, id) -> BOOL,
95 );
96 decl.add_method(
97 sel!(keyDown:),
98 handle_key_down as extern "C" fn(&Object, Sel, id),
99 );
100 decl.add_method(
101 sel!(mouseDown:),
102 handle_view_event as extern "C" fn(&Object, Sel, id),
103 );
104 decl.add_method(
105 sel!(mouseUp:),
106 handle_view_event as extern "C" fn(&Object, Sel, id),
107 );
108 decl.add_method(
109 sel!(rightMouseDown:),
110 handle_view_event as extern "C" fn(&Object, Sel, id),
111 );
112 decl.add_method(
113 sel!(rightMouseUp:),
114 handle_view_event as extern "C" fn(&Object, Sel, id),
115 );
116 decl.add_method(
117 sel!(otherMouseDown:),
118 handle_view_event as extern "C" fn(&Object, Sel, id),
119 );
120 decl.add_method(
121 sel!(otherMouseUp:),
122 handle_view_event as extern "C" fn(&Object, Sel, id),
123 );
124 decl.add_method(
125 sel!(mouseMoved:),
126 handle_view_event as extern "C" fn(&Object, Sel, id),
127 );
128 decl.add_method(
129 sel!(mouseExited:),
130 handle_view_event as extern "C" fn(&Object, Sel, id),
131 );
132 decl.add_method(
133 sel!(mouseDragged:),
134 handle_view_event as extern "C" fn(&Object, Sel, id),
135 );
136 decl.add_method(
137 sel!(scrollWheel:),
138 handle_view_event as extern "C" fn(&Object, Sel, id),
139 );
140 decl.add_method(
141 sel!(flagsChanged:),
142 handle_view_event as extern "C" fn(&Object, Sel, id),
143 );
144 decl.add_method(
145 sel!(cancelOperation:),
146 cancel_operation as extern "C" fn(&Object, Sel, id),
147 );
148
149 decl.add_method(
150 sel!(makeBackingLayer),
151 make_backing_layer as extern "C" fn(&Object, Sel) -> id,
152 );
153
154 decl.add_protocol(Protocol::get("CALayerDelegate").unwrap());
155 decl.add_method(
156 sel!(viewDidChangeBackingProperties),
157 view_did_change_backing_properties as extern "C" fn(&Object, Sel),
158 );
159 decl.add_method(
160 sel!(setFrameSize:),
161 set_frame_size as extern "C" fn(&Object, Sel, NSSize),
162 );
163 decl.add_method(
164 sel!(displayLayer:),
165 display_layer as extern "C" fn(&Object, Sel, id),
166 );
167
168 decl.add_protocol(Protocol::get("NSTextInputClient").unwrap());
169 decl.add_method(
170 sel!(validAttributesForMarkedText),
171 valid_attributes_for_marked_text as extern "C" fn(&Object, Sel) -> id,
172 );
173 decl.add_method(
174 sel!(hasMarkedText),
175 has_marked_text as extern "C" fn(&Object, Sel) -> BOOL,
176 );
177 decl.add_method(
178 sel!(markedRange),
179 marked_range as extern "C" fn(&Object, Sel) -> NSRange,
180 );
181 decl.add_method(
182 sel!(selectedRange),
183 selected_range as extern "C" fn(&Object, Sel) -> NSRange,
184 );
185 decl.add_method(
186 sel!(firstRectForCharacterRange:actualRange:),
187 first_rect_for_character_range as extern "C" fn(&Object, Sel, NSRange, id) -> NSRect,
188 );
189 decl.add_method(
190 sel!(insertText:replacementRange:),
191 insert_text as extern "C" fn(&Object, Sel, id, NSRange),
192 );
193 decl.add_method(
194 sel!(setMarkedText:selectedRange:replacementRange:),
195 set_marked_text as extern "C" fn(&Object, Sel, id, NSRange, NSRange),
196 );
197 decl.add_method(sel!(unmarkText), unmark_text as extern "C" fn(&Object, Sel));
198 decl.add_method(
199 sel!(attributedSubstringForProposedRange:actualRange:),
200 attributed_substring_for_proposed_range
201 as extern "C" fn(&Object, Sel, NSRange, *mut c_void) -> id,
202 );
203 decl.add_method(
204 sel!(viewDidChangeEffectiveAppearance),
205 view_did_change_effective_appearance as extern "C" fn(&Object, Sel),
206 );
207
208 // Suppress beep on keystrokes with modifier keys.
209 decl.add_method(
210 sel!(doCommandBySelector:),
211 do_command_by_selector as extern "C" fn(&Object, Sel, Sel),
212 );
213
214 decl.add_method(
215 sel!(acceptsFirstMouse:),
216 accepts_first_mouse as extern "C" fn(&Object, Sel, id) -> BOOL,
217 );
218
219 decl.register()
220 };
221}
222
223unsafe fn build_window_class(name: &'static str, superclass: &Class) -> *const Class {
224 let mut decl = ClassDecl::new(name, superclass).unwrap();
225 decl.add_ivar::<*mut c_void>(WINDOW_STATE_IVAR);
226 decl.add_method(sel!(dealloc), dealloc_window as extern "C" fn(&Object, Sel));
227 decl.add_method(
228 sel!(canBecomeMainWindow),
229 yes as extern "C" fn(&Object, Sel) -> BOOL,
230 );
231 decl.add_method(
232 sel!(canBecomeKeyWindow),
233 yes as extern "C" fn(&Object, Sel) -> BOOL,
234 );
235 decl.add_method(
236 sel!(sendEvent:),
237 send_event as extern "C" fn(&Object, Sel, id),
238 );
239 decl.add_method(
240 sel!(windowDidResize:),
241 window_did_resize as extern "C" fn(&Object, Sel, id),
242 );
243 decl.add_method(
244 sel!(windowWillEnterFullScreen:),
245 window_will_enter_fullscreen as extern "C" fn(&Object, Sel, id),
246 );
247 decl.add_method(
248 sel!(windowWillExitFullScreen:),
249 window_will_exit_fullscreen as extern "C" fn(&Object, Sel, id),
250 );
251 decl.add_method(
252 sel!(windowDidMove:),
253 window_did_move as extern "C" fn(&Object, Sel, id),
254 );
255 decl.add_method(
256 sel!(windowDidBecomeKey:),
257 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
258 );
259 decl.add_method(
260 sel!(windowDidResignKey:),
261 window_did_change_key_status as extern "C" fn(&Object, Sel, id),
262 );
263 decl.add_method(
264 sel!(windowShouldClose:),
265 window_should_close as extern "C" fn(&Object, Sel, id) -> BOOL,
266 );
267 decl.add_method(sel!(close), close_window as extern "C" fn(&Object, Sel));
268 decl.register()
269}
270
271///Used to track what the IME does when we send it a keystroke.
272///This is only used to handle the case where the IME mysteriously
273///swallows certain keys.
274///
275///Basically a direct copy of the approach that WezTerm uses in:
276///github.com/wez/wezterm : d5755f3e : window/src/os/macos/window.rs
277enum ImeState {
278 Continue,
279 Acted,
280 None,
281}
282
283struct InsertText {
284 replacement_range: Option<Range<usize>>,
285 text: String,
286}
287
288struct WindowState {
289 id: usize,
290 native_window: id,
291 kind: WindowKind,
292 event_callback: Option<Box<dyn FnMut(Event) -> bool>>,
293 activate_callback: Option<Box<dyn FnMut(bool)>>,
294 resize_callback: Option<Box<dyn FnMut()>>,
295 fullscreen_callback: Option<Box<dyn FnMut(bool)>>,
296 moved_callback: Option<Box<dyn FnMut()>>,
297 should_close_callback: Option<Box<dyn FnMut() -> bool>>,
298 close_callback: Option<Box<dyn FnOnce()>>,
299 appearance_changed_callback: Option<Box<dyn FnMut()>>,
300 input_handler: Option<Box<dyn InputHandler>>,
301 pending_key_down: Option<(KeyDownEvent, Option<InsertText>)>,
302 performed_key_equivalent: bool,
303 synthetic_drag_counter: usize,
304 executor: Rc<executor::Foreground>,
305 scene_to_render: Option<Scene>,
306 renderer: Renderer,
307 last_fresh_keydown: Option<Keystroke>,
308 traffic_light_position: Option<Vector2F>,
309 previous_modifiers_changed_event: Option<Event>,
310 //State tracking what the IME did after the last request
311 ime_state: ImeState,
312 //Retains the last IME Text
313 ime_text: Option<String>,
314}
315
316impl WindowState {
317 fn move_traffic_light(&self) {
318 if let Some(traffic_light_position) = self.traffic_light_position {
319 let titlebar_height = self.titlebar_height();
320
321 unsafe {
322 let close_button: id = msg_send![
323 self.native_window,
324 standardWindowButton: NSWindowButton::NSWindowCloseButton
325 ];
326 let min_button: id = msg_send![
327 self.native_window,
328 standardWindowButton: NSWindowButton::NSWindowMiniaturizeButton
329 ];
330 let zoom_button: id = msg_send![
331 self.native_window,
332 standardWindowButton: NSWindowButton::NSWindowZoomButton
333 ];
334
335 let mut close_button_frame: CGRect = msg_send![close_button, frame];
336 let mut min_button_frame: CGRect = msg_send![min_button, frame];
337 let mut zoom_button_frame: CGRect = msg_send![zoom_button, frame];
338 let mut origin = vec2f(
339 traffic_light_position.x(),
340 titlebar_height
341 - traffic_light_position.y()
342 - close_button_frame.size.height as f32,
343 );
344 let button_spacing =
345 (min_button_frame.origin.x - close_button_frame.origin.x) as f32;
346
347 close_button_frame.origin = CGPoint::new(origin.x() as f64, origin.y() as f64);
348 let _: () = msg_send![close_button, setFrame: close_button_frame];
349 origin.set_x(origin.x() + button_spacing);
350
351 min_button_frame.origin = CGPoint::new(origin.x() as f64, origin.y() as f64);
352 let _: () = msg_send![min_button, setFrame: min_button_frame];
353 origin.set_x(origin.x() + button_spacing);
354
355 zoom_button_frame.origin = CGPoint::new(origin.x() as f64, origin.y() as f64);
356 let _: () = msg_send![zoom_button, setFrame: zoom_button_frame];
357 }
358 }
359 }
360
361 fn is_fullscreen(&self) -> bool {
362 unsafe {
363 let style_mask = self.native_window.styleMask();
364 style_mask.contains(NSWindowStyleMask::NSFullScreenWindowMask)
365 }
366 }
367
368 fn bounds(&self) -> WindowBounds {
369 unsafe {
370 if self.is_fullscreen() {
371 return WindowBounds::Fullscreen;
372 }
373
374 let window_frame = self.frame();
375 let screen_frame = self.native_window.screen().visibleFrame().to_rectf();
376 if window_frame.size() == screen_frame.size() {
377 WindowBounds::Maximized
378 } else {
379 WindowBounds::Fixed(window_frame)
380 }
381 }
382 }
383
384 // Returns the window bounds in window coordinates
385 fn frame(&self) -> RectF {
386 unsafe {
387 let screen_frame = self.native_window.screen().visibleFrame();
388 let window_frame = NSWindow::frame(self.native_window);
389 RectF::new(
390 vec2f(
391 window_frame.origin.x as f32,
392 (screen_frame.size.height - window_frame.origin.y - window_frame.size.height)
393 as f32,
394 ),
395 vec2f(
396 window_frame.size.width as f32,
397 window_frame.size.height as f32,
398 ),
399 )
400 }
401 }
402
403 fn content_size(&self) -> Vector2F {
404 let NSSize { width, height, .. } =
405 unsafe { NSView::frame(self.native_window.contentView()) }.size;
406 vec2f(width as f32, height as f32)
407 }
408
409 fn scale_factor(&self) -> f32 {
410 get_scale_factor(self.native_window)
411 }
412
413 fn titlebar_height(&self) -> f32 {
414 unsafe {
415 let frame = NSWindow::frame(self.native_window);
416 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
417 (frame.size.height - content_layout_rect.size.height) as f32
418 }
419 }
420
421 fn present_scene(&mut self, scene: Scene) {
422 self.scene_to_render = Some(scene);
423 unsafe {
424 let _: () = msg_send![self.native_window.contentView(), setNeedsDisplay: YES];
425 }
426 }
427}
428
429pub struct Window(Rc<RefCell<WindowState>>);
430
431impl Window {
432 pub fn open(
433 id: usize,
434 options: platform::WindowOptions,
435 executor: Rc<executor::Foreground>,
436 fonts: Arc<dyn platform::FontSystem>,
437 ) -> Self {
438 unsafe {
439 let pool = NSAutoreleasePool::new(nil);
440
441 let mut style_mask;
442 if let Some(titlebar) = options.titlebar.as_ref() {
443 style_mask = NSWindowStyleMask::NSClosableWindowMask
444 | NSWindowStyleMask::NSMiniaturizableWindowMask
445 | NSWindowStyleMask::NSResizableWindowMask
446 | NSWindowStyleMask::NSTitledWindowMask;
447
448 if titlebar.appears_transparent {
449 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
450 }
451 } else {
452 style_mask = NSWindowStyleMask::NSTitledWindowMask
453 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
454 }
455
456 let native_window: id = match options.kind {
457 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
458 WindowKind::PopUp => {
459 style_mask |= NSWindowStyleMaskNonactivatingPanel;
460 msg_send![PANEL_CLASS, alloc]
461 }
462 };
463 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
464 NSRect::new(NSPoint::new(0., 0.), NSSize::new(1024., 768.)),
465 style_mask,
466 NSBackingStoreBuffered,
467 NO,
468 options
469 .screen
470 .and_then(|screen| {
471 Some(screen.as_any().downcast_ref::<Screen>()?.native_screen)
472 })
473 .unwrap_or(nil),
474 );
475 assert!(!native_window.is_null());
476
477 let screen = native_window.screen();
478 match options.bounds {
479 WindowBounds::Fullscreen => {
480 native_window.toggleFullScreen_(nil);
481 }
482 WindowBounds::Maximized => {
483 native_window.setFrame_display_(screen.visibleFrame(), YES);
484 }
485 WindowBounds::Fixed(rect) => {
486 let screen_frame = screen.visibleFrame();
487 let ns_rect = NSRect::new(
488 NSPoint::new(
489 rect.origin_x() as f64,
490 screen_frame.size.height
491 - rect.origin_y() as f64
492 - rect.height() as f64,
493 ),
494 NSSize::new(rect.width() as f64, rect.height() as f64),
495 );
496
497 if ns_rect.intersects(screen_frame) {
498 native_window.setFrame_display_(ns_rect, YES);
499 } else {
500 native_window.setFrame_display_(screen_frame, YES);
501 }
502 }
503 }
504
505 let native_view: id = msg_send![VIEW_CLASS, alloc];
506 let native_view = NSView::init(native_view);
507
508 assert!(!native_view.is_null());
509
510 let window = Self(Rc::new(RefCell::new(WindowState {
511 id,
512 native_window,
513 kind: options.kind,
514 event_callback: None,
515 resize_callback: None,
516 should_close_callback: None,
517 close_callback: None,
518 activate_callback: None,
519 fullscreen_callback: None,
520 moved_callback: None,
521 appearance_changed_callback: None,
522 input_handler: None,
523 pending_key_down: None,
524 performed_key_equivalent: false,
525 synthetic_drag_counter: 0,
526 executor,
527 scene_to_render: Default::default(),
528 renderer: Renderer::new(true, fonts),
529 last_fresh_keydown: None,
530 traffic_light_position: options
531 .titlebar
532 .as_ref()
533 .and_then(|titlebar| titlebar.traffic_light_position),
534 previous_modifiers_changed_event: None,
535 ime_state: ImeState::None,
536 ime_text: None,
537 })));
538
539 (*native_window).set_ivar(
540 WINDOW_STATE_IVAR,
541 Rc::into_raw(window.0.clone()) as *const c_void,
542 );
543 native_window.setDelegate_(native_window);
544 (*native_view).set_ivar(
545 WINDOW_STATE_IVAR,
546 Rc::into_raw(window.0.clone()) as *const c_void,
547 );
548
549 if let Some(title) = options.titlebar.as_ref().and_then(|t| t.title) {
550 native_window.setTitle_(NSString::alloc(nil).init_str(title));
551 }
552
553 native_window.setMovable_(options.is_movable as BOOL);
554
555 if options
556 .titlebar
557 .map_or(true, |titlebar| titlebar.appears_transparent)
558 {
559 native_window.setTitlebarAppearsTransparent_(YES);
560 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
561 }
562
563 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
564 native_view.setWantsBestResolutionOpenGLSurface_(YES);
565
566 // From winit crate: On Mojave, views automatically become layer-backed shortly after
567 // being added to a native_window. Changing the layer-backedness of a view breaks the
568 // association between the view and its associated OpenGL context. To work around this,
569 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
570 // itself and break the association with its context.
571 native_view.setWantsLayer(YES);
572 let _: () = msg_send![
573 native_view,
574 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
575 ];
576
577 native_window.setContentView_(native_view.autorelease());
578 native_window.makeFirstResponder_(native_view);
579
580 if options.center {
581 native_window.center();
582 }
583
584 match options.kind {
585 WindowKind::Normal => {
586 native_window.setLevel_(NSNormalWindowLevel);
587 native_window.setAcceptsMouseMovedEvents_(YES);
588 }
589 WindowKind::PopUp => {
590 // Use a tracking area to allow receiving MouseMoved events even when
591 // the window or application aren't active, which is often the case
592 // e.g. for notification windows.
593 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
594 let _: () = msg_send![
595 tracking_area,
596 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
597 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
598 owner: native_view
599 userInfo: nil
600 ];
601 let _: () =
602 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
603
604 native_window.setLevel_(NSPopUpWindowLevel);
605 let _: () = msg_send![
606 native_window,
607 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
608 ];
609 native_window.setCollectionBehavior_(
610 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
611 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
612 );
613 }
614 }
615 if options.focus {
616 native_window.makeKeyAndOrderFront_(nil);
617 } else {
618 native_window.orderFront_(nil);
619 }
620
621 window.0.borrow().move_traffic_light();
622 pool.drain();
623
624 window
625 }
626 }
627
628 pub fn main_window_id() -> Option<usize> {
629 unsafe {
630 let app = NSApplication::sharedApplication(nil);
631 let main_window: id = msg_send![app, mainWindow];
632 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
633 let id = get_window_state(&*main_window).borrow().id;
634 Some(id)
635 } else {
636 None
637 }
638 }
639 }
640}
641
642impl Drop for Window {
643 fn drop(&mut self) {
644 let this = self.0.borrow();
645 let window = this.native_window;
646 this.executor
647 .spawn(async move {
648 unsafe {
649 window.close();
650 }
651 })
652 .detach();
653 }
654}
655
656impl platform::Window for Window {
657 fn bounds(&self) -> WindowBounds {
658 self.0.as_ref().borrow().bounds()
659 }
660
661 fn content_size(&self) -> Vector2F {
662 self.0.as_ref().borrow().content_size()
663 }
664
665 fn scale_factor(&self) -> f32 {
666 self.0.as_ref().borrow().scale_factor()
667 }
668
669 fn titlebar_height(&self) -> f32 {
670 self.0.as_ref().borrow().titlebar_height()
671 }
672
673 fn appearance(&self) -> platform::Appearance {
674 unsafe {
675 let appearance: id = msg_send![self.0.borrow().native_window, effectiveAppearance];
676 platform::Appearance::from_native(appearance)
677 }
678 }
679
680 fn screen(&self) -> Rc<dyn platform::Screen> {
681 unsafe {
682 Rc::new(Screen {
683 native_screen: self.0.as_ref().borrow().native_window.screen(),
684 })
685 }
686 }
687
688 fn as_any_mut(&mut self) -> &mut dyn Any {
689 self
690 }
691
692 fn set_input_handler(&mut self, input_handler: Box<dyn InputHandler>) {
693 self.0.as_ref().borrow_mut().input_handler = Some(input_handler);
694 }
695
696 fn prompt(
697 &self,
698 level: platform::PromptLevel,
699 msg: &str,
700 answers: &[&str],
701 ) -> oneshot::Receiver<usize> {
702 unsafe {
703 let alert: id = msg_send![class!(NSAlert), alloc];
704 let alert: id = msg_send![alert, init];
705 let alert_style = match level {
706 platform::PromptLevel::Info => 1,
707 platform::PromptLevel::Warning => 0,
708 platform::PromptLevel::Critical => 2,
709 };
710 let _: () = msg_send![alert, setAlertStyle: alert_style];
711 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
712 for (ix, answer) in answers.iter().enumerate() {
713 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
714 let _: () = msg_send![button, setTag: ix as NSInteger];
715 }
716 let (done_tx, done_rx) = oneshot::channel();
717 let done_tx = Cell::new(Some(done_tx));
718 let block = ConcreteBlock::new(move |answer: NSInteger| {
719 if let Some(mut done_tx) = done_tx.take() {
720 let _ = postage::sink::Sink::try_send(&mut done_tx, answer.try_into().unwrap());
721 }
722 });
723 let block = block.copy();
724 let native_window = self.0.borrow().native_window;
725 self.0
726 .borrow()
727 .executor
728 .spawn(async move {
729 let _: () = msg_send![
730 alert,
731 beginSheetModalForWindow: native_window
732 completionHandler: block
733 ];
734 })
735 .detach();
736
737 done_rx
738 }
739 }
740
741 fn activate(&self) {
742 let window = self.0.borrow().native_window;
743 self.0
744 .borrow()
745 .executor
746 .spawn(async move {
747 unsafe {
748 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
749 }
750 })
751 .detach();
752 }
753
754 fn set_title(&mut self, title: &str) {
755 unsafe {
756 let app = NSApplication::sharedApplication(nil);
757 let window = self.0.borrow().native_window;
758 let title = ns_string(title);
759 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
760 let _: () = msg_send![window, setTitle: title];
761 self.0.borrow().move_traffic_light();
762 }
763 }
764
765 fn set_edited(&mut self, edited: bool) {
766 unsafe {
767 let window = self.0.borrow().native_window;
768 msg_send![window, setDocumentEdited: edited as BOOL]
769 }
770
771 // Changing the document edited state resets the traffic light position,
772 // so we have to move it again.
773 self.0.borrow().move_traffic_light();
774 }
775
776 fn show_character_palette(&self) {
777 unsafe {
778 let app = NSApplication::sharedApplication(nil);
779 let window = self.0.borrow().native_window;
780 let _: () = msg_send![app, orderFrontCharacterPalette: window];
781 }
782 }
783
784 fn minimize(&self) {
785 let window = self.0.borrow().native_window;
786 unsafe {
787 window.miniaturize_(nil);
788 }
789 }
790
791 fn zoom(&self) {
792 let this = self.0.borrow();
793 let window = this.native_window;
794 this.executor
795 .spawn(async move {
796 unsafe {
797 window.zoom_(nil);
798 }
799 })
800 .detach();
801 }
802
803 fn present_scene(&mut self, scene: Scene) {
804 self.0.as_ref().borrow_mut().present_scene(scene);
805 }
806
807 fn toggle_full_screen(&self) {
808 let this = self.0.borrow();
809 let window = this.native_window;
810 this.executor
811 .spawn(async move {
812 unsafe {
813 window.toggleFullScreen_(nil);
814 }
815 })
816 .detach();
817 }
818
819 fn on_event(&mut self, callback: Box<dyn FnMut(Event) -> bool>) {
820 self.0.as_ref().borrow_mut().event_callback = Some(callback);
821 }
822
823 fn on_active_status_change(&mut self, callback: Box<dyn FnMut(bool)>) {
824 self.0.as_ref().borrow_mut().activate_callback = Some(callback);
825 }
826
827 fn on_resize(&mut self, callback: Box<dyn FnMut()>) {
828 self.0.as_ref().borrow_mut().resize_callback = Some(callback);
829 }
830
831 fn on_fullscreen(&mut self, callback: Box<dyn FnMut(bool)>) {
832 self.0.as_ref().borrow_mut().fullscreen_callback = Some(callback);
833 }
834
835 fn on_moved(&mut self, callback: Box<dyn FnMut()>) {
836 self.0.as_ref().borrow_mut().moved_callback = Some(callback);
837 }
838
839 fn on_should_close(&mut self, callback: Box<dyn FnMut() -> bool>) {
840 self.0.as_ref().borrow_mut().should_close_callback = Some(callback);
841 }
842
843 fn on_close(&mut self, callback: Box<dyn FnOnce()>) {
844 self.0.as_ref().borrow_mut().close_callback = Some(callback);
845 }
846
847 fn on_appearance_changed(&mut self, callback: Box<dyn FnMut()>) {
848 self.0.borrow_mut().appearance_changed_callback = Some(callback);
849 }
850
851 fn is_topmost_for_position(&self, position: Vector2F) -> bool {
852 let self_borrow = self.0.borrow();
853 let self_id = self_borrow.id;
854
855 unsafe {
856 let app = NSApplication::sharedApplication(nil);
857
858 // Convert back to screen coordinates
859 let screen_point = position.to_screen_ns_point(
860 self_borrow.native_window,
861 self_borrow.content_size().y() as f64,
862 );
863
864 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
865 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
866
867 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
868 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
869 if is_panel == YES || is_window == YES {
870 let topmost_window_id = get_window_state(&*top_most_window).borrow().id;
871 topmost_window_id == self_id
872 } else {
873 // Someone else's window is on top
874 false
875 }
876 }
877 }
878}
879
880fn get_scale_factor(native_window: id) -> f32 {
881 unsafe {
882 let screen: id = msg_send![native_window, screen];
883 NSScreen::backingScaleFactor(screen) as f32
884 }
885}
886
887unsafe fn get_window_state(object: &Object) -> Rc<RefCell<WindowState>> {
888 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
889 let rc1 = Rc::from_raw(raw as *mut RefCell<WindowState>);
890 let rc2 = rc1.clone();
891 mem::forget(rc1);
892 rc2
893}
894
895unsafe fn drop_window_state(object: &Object) {
896 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
897 Rc::from_raw(raw as *mut RefCell<WindowState>);
898}
899
900extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
901 YES
902}
903
904extern "C" fn dealloc_window(this: &Object, _: Sel) {
905 unsafe {
906 drop_window_state(this);
907 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
908 }
909}
910
911extern "C" fn dealloc_view(this: &Object, _: Sel) {
912 unsafe {
913 drop_window_state(this);
914 let _: () = msg_send![super(this, class!(NSView)), dealloc];
915 }
916}
917
918extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
919 handle_key_event(this, native_event, true)
920}
921
922extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
923 handle_key_event(this, native_event, false);
924}
925
926extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
927 let window_state = unsafe { get_window_state(this) };
928 let mut window_state_borrow = window_state.as_ref().borrow_mut();
929
930 let window_height = window_state_borrow.content_size().y();
931 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
932
933 if let Some(event) = event {
934 if key_equivalent {
935 window_state_borrow.performed_key_equivalent = true;
936 } else if window_state_borrow.performed_key_equivalent {
937 return NO;
938 }
939
940 let function_is_held;
941 window_state_borrow.pending_key_down = match event {
942 Event::KeyDown(event) => {
943 let keydown = event.keystroke.clone();
944 // Ignore events from held-down keys after some of the initially-pressed keys
945 // were released.
946 if event.is_held {
947 if window_state_borrow.last_fresh_keydown.as_ref() != Some(&keydown) {
948 return YES;
949 }
950 } else {
951 window_state_borrow.last_fresh_keydown = Some(keydown);
952 }
953 function_is_held = event.keystroke.function;
954 Some((event, None))
955 }
956
957 _ => return NO,
958 };
959
960 drop(window_state_borrow);
961
962 if !function_is_held {
963 unsafe {
964 let input_context: id = msg_send![this, inputContext];
965 let _: BOOL = msg_send![input_context, handleEvent: native_event];
966 }
967 }
968
969 let mut handled = false;
970 let mut window_state_borrow = window_state.borrow_mut();
971 let ime_text = window_state_borrow.ime_text.clone();
972 if let Some((event, insert_text)) = window_state_borrow.pending_key_down.take() {
973 let is_held = event.is_held;
974 if let Some(mut callback) = window_state_borrow.event_callback.take() {
975 drop(window_state_borrow);
976
977 let is_composing =
978 with_input_handler(this, |input_handler| input_handler.marked_text_range())
979 .flatten()
980 .is_some();
981 if !is_composing {
982 handled = callback(Event::KeyDown(event));
983 }
984
985 if !handled {
986 if let Some(insert) = insert_text {
987 handled = true;
988 with_input_handler(this, |input_handler| {
989 input_handler
990 .replace_text_in_range(insert.replacement_range, &insert.text)
991 });
992 } else if !is_composing && is_held {
993 if let Some(last_insert_text) = ime_text {
994 //MacOS IME is a bit funky, and even when you've told it there's nothing to
995 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
996 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
997 with_input_handler(this, |input_handler| {
998 if input_handler.selected_text_range().is_none() {
999 handled = true;
1000 input_handler.replace_text_in_range(None, &last_insert_text)
1001 }
1002 });
1003 }
1004 }
1005 }
1006
1007 window_state.borrow_mut().event_callback = Some(callback);
1008 }
1009 } else {
1010 handled = true;
1011 }
1012
1013 handled as BOOL
1014 } else {
1015 NO
1016 }
1017}
1018
1019extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1020 let window_state = unsafe { get_window_state(this) };
1021 let weak_window_state = Rc::downgrade(&window_state);
1022 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1023 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1024
1025 let window_height = window_state_borrow.content_size().y();
1026 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
1027 if let Some(event) = event {
1028 match &event {
1029 Event::MouseMoved(
1030 event @ MouseMovedEvent {
1031 pressed_button: Some(_),
1032 ..
1033 },
1034 ) => {
1035 window_state_borrow.synthetic_drag_counter += 1;
1036 window_state_borrow
1037 .executor
1038 .spawn(synthetic_drag(
1039 weak_window_state,
1040 window_state_borrow.synthetic_drag_counter,
1041 *event,
1042 ))
1043 .detach();
1044 }
1045
1046 Event::MouseMoved(_)
1047 if !(is_active || window_state_borrow.kind == WindowKind::PopUp) =>
1048 {
1049 return
1050 }
1051
1052 Event::MouseUp(MouseButtonEvent {
1053 button: MouseButton::Left,
1054 ..
1055 }) => {
1056 window_state_borrow.synthetic_drag_counter += 1;
1057 }
1058
1059 Event::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1060 // Only raise modifiers changed event when they have actually changed
1061 if let Some(Event::ModifiersChanged(ModifiersChangedEvent {
1062 modifiers: prev_modifiers,
1063 })) = &window_state_borrow.previous_modifiers_changed_event
1064 {
1065 if prev_modifiers == modifiers {
1066 return;
1067 }
1068 }
1069
1070 window_state_borrow.previous_modifiers_changed_event = Some(event.clone());
1071 }
1072
1073 _ => {}
1074 }
1075
1076 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1077 drop(window_state_borrow);
1078 callback(event);
1079 window_state.borrow_mut().event_callback = Some(callback);
1080 }
1081 }
1082}
1083
1084// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1085// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1086extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1087 let window_state = unsafe { get_window_state(this) };
1088 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1089
1090 let keystroke = Keystroke {
1091 cmd: true,
1092 ctrl: false,
1093 alt: false,
1094 shift: false,
1095 function: false,
1096 key: ".".into(),
1097 };
1098 let event = Event::KeyDown(KeyDownEvent {
1099 keystroke: keystroke.clone(),
1100 is_held: false,
1101 });
1102
1103 window_state_borrow.last_fresh_keydown = Some(keystroke);
1104 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1105 drop(window_state_borrow);
1106 callback(event);
1107 window_state.borrow_mut().event_callback = Some(callback);
1108 }
1109}
1110
1111extern "C" fn send_event(this: &Object, _: Sel, native_event: id) {
1112 unsafe {
1113 let _: () = msg_send![super(this, class!(NSWindow)), sendEvent: native_event];
1114 get_window_state(this).borrow_mut().performed_key_equivalent = false;
1115 }
1116}
1117
1118extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1119 let window_state = unsafe { get_window_state(this) };
1120 window_state.as_ref().borrow().move_traffic_light();
1121}
1122
1123extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1124 window_fullscreen_changed(this, true);
1125}
1126
1127extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1128 window_fullscreen_changed(this, false);
1129}
1130
1131fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1132 let window_state = unsafe { get_window_state(this) };
1133 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1134 if let Some(mut callback) = window_state_borrow.fullscreen_callback.take() {
1135 drop(window_state_borrow);
1136 callback(is_fullscreen);
1137 window_state.borrow_mut().fullscreen_callback = Some(callback);
1138 }
1139}
1140
1141extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1142 let window_state = unsafe { get_window_state(this) };
1143 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1144 if let Some(mut callback) = window_state_borrow.moved_callback.take() {
1145 drop(window_state_borrow);
1146 callback();
1147 window_state.borrow_mut().moved_callback = Some(callback);
1148 }
1149}
1150
1151extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1152 let window_state = unsafe { get_window_state(this) };
1153 let window_state_borrow = window_state.borrow();
1154 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1155
1156 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1157 // `windowDidBecomeKey` message to the previous key window even though that window
1158 // isn't actually key. This causes a bug if the application is later activated while
1159 // the pop-up is still open, making it impossible to activate the previous key window
1160 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1161 // the app and re-activate it, which is a pretty bad UX.
1162 // The following code detects the spurious event and invokes `resignKeyWindow`:
1163 // in theory, we're not supposed to invoke this method manually but it balances out
1164 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1165 if selector == sel!(windowDidBecomeKey:) {
1166 if !is_active {
1167 unsafe {
1168 let _: () = msg_send![window_state_borrow.native_window, resignKeyWindow];
1169 return;
1170 }
1171 }
1172 }
1173
1174 let executor = window_state_borrow.executor.clone();
1175 drop(window_state_borrow);
1176 executor
1177 .spawn(async move {
1178 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1179 if let Some(mut callback) = window_state_borrow.activate_callback.take() {
1180 drop(window_state_borrow);
1181 callback(is_active);
1182 window_state.borrow_mut().activate_callback = Some(callback);
1183 };
1184 })
1185 .detach();
1186}
1187
1188extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1189 let window_state = unsafe { get_window_state(this) };
1190 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1191 if let Some(mut callback) = window_state_borrow.should_close_callback.take() {
1192 drop(window_state_borrow);
1193 let should_close = callback();
1194 window_state.borrow_mut().should_close_callback = Some(callback);
1195 should_close as BOOL
1196 } else {
1197 YES
1198 }
1199}
1200
1201extern "C" fn close_window(this: &Object, _: Sel) {
1202 unsafe {
1203 let close_callback = {
1204 let window_state = get_window_state(this);
1205 window_state
1206 .as_ref()
1207 .try_borrow_mut()
1208 .ok()
1209 .and_then(|mut window_state| window_state.close_callback.take())
1210 };
1211
1212 if let Some(callback) = close_callback {
1213 callback();
1214 }
1215
1216 let _: () = msg_send![super(this, class!(NSWindow)), close];
1217 }
1218}
1219
1220extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1221 let window_state = unsafe { get_window_state(this) };
1222 let window_state = window_state.as_ref().borrow();
1223 window_state.renderer.layer().as_ptr() as id
1224}
1225
1226extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1227 let window_state = unsafe { get_window_state(this) };
1228 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1229
1230 unsafe {
1231 let scale_factor = window_state_borrow.scale_factor() as f64;
1232 let size = window_state_borrow.content_size();
1233 let drawable_size: NSSize = NSSize {
1234 width: size.x() as f64 * scale_factor,
1235 height: size.y() as f64 * scale_factor,
1236 };
1237
1238 let _: () = msg_send![
1239 window_state_borrow.renderer.layer(),
1240 setContentsScale: scale_factor
1241 ];
1242 let _: () = msg_send![
1243 window_state_borrow.renderer.layer(),
1244 setDrawableSize: drawable_size
1245 ];
1246 }
1247
1248 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1249 drop(window_state_borrow);
1250 callback();
1251 window_state.as_ref().borrow_mut().resize_callback = Some(callback);
1252 };
1253}
1254
1255extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1256 let window_state = unsafe { get_window_state(this) };
1257 let window_state_borrow = window_state.as_ref().borrow();
1258
1259 if window_state_borrow.content_size() == vec2f(size.width as f32, size.height as f32) {
1260 return;
1261 }
1262
1263 unsafe {
1264 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1265 }
1266
1267 let scale_factor = window_state_borrow.scale_factor() as f64;
1268 let drawable_size: NSSize = NSSize {
1269 width: size.width * scale_factor,
1270 height: size.height * scale_factor,
1271 };
1272
1273 unsafe {
1274 let _: () = msg_send![
1275 window_state_borrow.renderer.layer(),
1276 setDrawableSize: drawable_size
1277 ];
1278 }
1279
1280 drop(window_state_borrow);
1281 let mut window_state_borrow = window_state.borrow_mut();
1282 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1283 drop(window_state_borrow);
1284 callback();
1285 window_state.borrow_mut().resize_callback = Some(callback);
1286 };
1287}
1288
1289extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1290 unsafe {
1291 let window_state = get_window_state(this);
1292 let mut window_state = window_state.as_ref().borrow_mut();
1293 if let Some(scene) = window_state.scene_to_render.take() {
1294 window_state.renderer.render(&scene);
1295 };
1296 }
1297}
1298
1299extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1300 unsafe { msg_send![class!(NSArray), array] }
1301}
1302
1303extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1304 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1305 .flatten()
1306 .is_some() as BOOL
1307}
1308
1309extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1310 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1311 .flatten()
1312 .map_or(NSRange::invalid(), |range| range.into())
1313}
1314
1315extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1316 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1317 .flatten()
1318 .map_or(NSRange::invalid(), |range| range.into())
1319}
1320
1321extern "C" fn first_rect_for_character_range(
1322 this: &Object,
1323 _: Sel,
1324 range: NSRange,
1325 _: id,
1326) -> NSRect {
1327 let frame = unsafe {
1328 let window = get_window_state(this).borrow().native_window;
1329 NSView::frame(window)
1330 };
1331 with_input_handler(this, |input_handler| {
1332 input_handler.rect_for_range(range.to_range()?)
1333 })
1334 .flatten()
1335 .map_or(
1336 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1337 |rect| {
1338 NSRect::new(
1339 NSPoint::new(
1340 frame.origin.x + rect.origin_x() as f64,
1341 frame.origin.y + frame.size.height - rect.origin_y() as f64,
1342 ),
1343 NSSize::new(rect.width() as f64, rect.height() as f64),
1344 )
1345 },
1346 )
1347}
1348
1349extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1350 unsafe {
1351 let window_state = get_window_state(this);
1352 let mut window_state_borrow = window_state.borrow_mut();
1353 let pending_key_down = window_state_borrow.pending_key_down.take();
1354 drop(window_state_borrow);
1355
1356 let is_attributed_string: BOOL =
1357 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1358 let text: id = if is_attributed_string == YES {
1359 msg_send![text, string]
1360 } else {
1361 text
1362 };
1363 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1364 .to_str()
1365 .unwrap();
1366 let replacement_range = replacement_range.to_range();
1367
1368 window_state.borrow_mut().ime_text = Some(text.to_string());
1369 window_state.borrow_mut().ime_state = ImeState::Acted;
1370
1371 let is_composing =
1372 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1373 .flatten()
1374 .is_some();
1375
1376 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1377 with_input_handler(this, |input_handler| {
1378 input_handler.replace_text_in_range(replacement_range, text)
1379 });
1380 } else {
1381 let mut pending_key_down = pending_key_down.unwrap();
1382 pending_key_down.1 = Some(InsertText {
1383 replacement_range,
1384 text: text.to_string(),
1385 });
1386 window_state.borrow_mut().pending_key_down = Some(pending_key_down);
1387 }
1388 }
1389}
1390
1391extern "C" fn set_marked_text(
1392 this: &Object,
1393 _: Sel,
1394 text: id,
1395 selected_range: NSRange,
1396 replacement_range: NSRange,
1397) {
1398 unsafe {
1399 let window_state = get_window_state(this);
1400 window_state.borrow_mut().pending_key_down.take();
1401
1402 let is_attributed_string: BOOL =
1403 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1404 let text: id = if is_attributed_string == YES {
1405 msg_send![text, string]
1406 } else {
1407 text
1408 };
1409 let selected_range = selected_range.to_range();
1410 let replacement_range = replacement_range.to_range();
1411 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1412 .to_str()
1413 .unwrap();
1414
1415 window_state.borrow_mut().ime_state = ImeState::Acted;
1416 window_state.borrow_mut().ime_text = Some(text.to_string());
1417
1418 with_input_handler(this, |input_handler| {
1419 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1420 });
1421 }
1422}
1423
1424extern "C" fn unmark_text(this: &Object, _: Sel) {
1425 unsafe {
1426 let state = get_window_state(this);
1427 let mut borrow = state.borrow_mut();
1428 borrow.ime_state = ImeState::Acted;
1429 borrow.ime_text.take();
1430 }
1431
1432 with_input_handler(this, |input_handler| input_handler.unmark_text());
1433}
1434
1435extern "C" fn attributed_substring_for_proposed_range(
1436 this: &Object,
1437 _: Sel,
1438 range: NSRange,
1439 _actual_range: *mut c_void,
1440) -> id {
1441 with_input_handler(this, |input_handler| {
1442 let range = range.to_range()?;
1443 if range.is_empty() {
1444 return None;
1445 }
1446
1447 let selected_text = input_handler.text_for_range(range)?;
1448 unsafe {
1449 let string: id = msg_send![class!(NSAttributedString), alloc];
1450 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1451 Some(string)
1452 }
1453 })
1454 .flatten()
1455 .unwrap_or(nil)
1456}
1457
1458extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1459 unsafe {
1460 let state = get_window_state(this);
1461 let mut borrow = state.borrow_mut();
1462 borrow.ime_state = ImeState::Continue;
1463 borrow.ime_text.take();
1464 }
1465}
1466
1467extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1468 unsafe {
1469 let state = get_window_state(this);
1470 let mut state_borrow = state.as_ref().borrow_mut();
1471 if let Some(mut callback) = state_borrow.appearance_changed_callback.take() {
1472 drop(state_borrow);
1473 callback();
1474 state.borrow_mut().appearance_changed_callback = Some(callback);
1475 }
1476 }
1477}
1478
1479extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1480 unsafe {
1481 let state = get_window_state(this);
1482 let state_borrow = state.as_ref().borrow();
1483 return if state_borrow.kind == WindowKind::PopUp {
1484 YES
1485 } else {
1486 NO
1487 };
1488 }
1489}
1490
1491async fn synthetic_drag(
1492 window_state: Weak<RefCell<WindowState>>,
1493 drag_id: usize,
1494 event: MouseMovedEvent,
1495) {
1496 loop {
1497 Timer::after(Duration::from_millis(16)).await;
1498 if let Some(window_state) = window_state.upgrade() {
1499 let mut window_state_borrow = window_state.borrow_mut();
1500 if window_state_borrow.synthetic_drag_counter == drag_id {
1501 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1502 drop(window_state_borrow);
1503 callback(Event::MouseMoved(event));
1504 window_state.borrow_mut().event_callback = Some(callback);
1505 }
1506 } else {
1507 break;
1508 }
1509 }
1510 }
1511}
1512
1513fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1514where
1515 F: FnOnce(&mut dyn InputHandler) -> R,
1516{
1517 let window_state = unsafe { get_window_state(window) };
1518 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1519 if let Some(mut input_handler) = window_state_borrow.input_handler.take() {
1520 drop(window_state_borrow);
1521 let result = f(input_handler.as_mut());
1522 window_state.borrow_mut().input_handler = Some(input_handler);
1523 Some(result)
1524 } else {
1525 None
1526 }
1527}