1use crate::{
2 executor,
3 geometry::{
4 rect::RectF,
5 vector::{vec2f, Vector2F},
6 },
7 keymap_matcher::Keystroke,
8 mac::platform::NSViewLayerContentsRedrawDuringViewResize,
9 platform::{
10 self,
11 mac::{geometry::RectFExt, renderer::Renderer, screen::Screen},
12 Event, WindowBounds,
13 },
14 InputHandler, KeyDownEvent, ModifiersChangedEvent, MouseButton, MouseButtonEvent,
15 MouseMovedEvent, Scene, WindowKind,
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 if window_frame == self.native_window.screen().visibleFrame().to_rectf() {
376 WindowBounds::Maximized
377 } else {
378 WindowBounds::Fixed(window_frame)
379 }
380 }
381 }
382
383 // Returns the window bounds in window coordinates
384 fn frame(&self) -> RectF {
385 unsafe {
386 let ns_frame = NSWindow::frame(self.native_window);
387 ns_frame.to_rectf()
388 }
389 }
390
391 fn content_size(&self) -> Vector2F {
392 let NSSize { width, height, .. } =
393 unsafe { NSView::frame(self.native_window.contentView()) }.size;
394 vec2f(width as f32, height as f32)
395 }
396
397 fn scale_factor(&self) -> f32 {
398 get_scale_factor(self.native_window)
399 }
400
401 fn titlebar_height(&self) -> f32 {
402 unsafe {
403 let frame = NSWindow::frame(self.native_window);
404 let content_layout_rect: CGRect = msg_send![self.native_window, contentLayoutRect];
405 (frame.size.height - content_layout_rect.size.height) as f32
406 }
407 }
408
409 fn present_scene(&mut self, scene: Scene) {
410 self.scene_to_render = Some(scene);
411 unsafe {
412 let _: () = msg_send![self.native_window.contentView(), setNeedsDisplay: YES];
413 }
414 }
415}
416
417pub struct Window(Rc<RefCell<WindowState>>);
418
419impl Window {
420 pub fn open(
421 id: usize,
422 options: platform::WindowOptions,
423 executor: Rc<executor::Foreground>,
424 fonts: Arc<dyn platform::FontSystem>,
425 ) -> Self {
426 unsafe {
427 let pool = NSAutoreleasePool::new(nil);
428
429 let mut style_mask;
430 if let Some(titlebar) = options.titlebar.as_ref() {
431 style_mask = NSWindowStyleMask::NSClosableWindowMask
432 | NSWindowStyleMask::NSMiniaturizableWindowMask
433 | NSWindowStyleMask::NSResizableWindowMask
434 | NSWindowStyleMask::NSTitledWindowMask;
435
436 if titlebar.appears_transparent {
437 style_mask |= NSWindowStyleMask::NSFullSizeContentViewWindowMask;
438 }
439 } else {
440 style_mask = NSWindowStyleMask::NSTitledWindowMask
441 | NSWindowStyleMask::NSFullSizeContentViewWindowMask;
442 }
443
444 let native_window: id = match options.kind {
445 WindowKind::Normal => msg_send![WINDOW_CLASS, alloc],
446 WindowKind::PopUp => {
447 style_mask |= NSWindowStyleMaskNonactivatingPanel;
448 msg_send![PANEL_CLASS, alloc]
449 }
450 };
451 let native_window = native_window.initWithContentRect_styleMask_backing_defer_screen_(
452 NSRect::new(NSPoint::new(0., 0.), NSSize::new(1024., 768.)),
453 style_mask,
454 NSBackingStoreBuffered,
455 NO,
456 options
457 .screen
458 .and_then(|screen| {
459 Some(screen.as_any().downcast_ref::<Screen>()?.native_screen)
460 })
461 .unwrap_or(nil),
462 );
463 assert!(!native_window.is_null());
464
465 let screen = native_window.screen();
466 match options.bounds {
467 WindowBounds::Fullscreen => {
468 native_window.toggleFullScreen_(nil);
469 }
470 WindowBounds::Maximized => {
471 native_window.setFrame_display_(screen.visibleFrame(), YES);
472 }
473 WindowBounds::Fixed(rect) => {
474 let screen_frame = screen.visibleFrame();
475 let ns_rect = rect.to_ns_rect();
476 if ns_rect.intersects(screen_frame) {
477 native_window.setFrame_display_(ns_rect, YES);
478 } else {
479 native_window.setFrame_display_(screen_frame, YES);
480 }
481 }
482 }
483
484 let native_view: id = msg_send![VIEW_CLASS, alloc];
485 let native_view = NSView::init(native_view);
486
487 assert!(!native_view.is_null());
488
489 let window = Self(Rc::new(RefCell::new(WindowState {
490 id,
491 native_window,
492 kind: options.kind,
493 event_callback: None,
494 resize_callback: None,
495 should_close_callback: None,
496 close_callback: None,
497 activate_callback: None,
498 fullscreen_callback: None,
499 moved_callback: None,
500 appearance_changed_callback: None,
501 input_handler: None,
502 pending_key_down: None,
503 performed_key_equivalent: false,
504 synthetic_drag_counter: 0,
505 executor,
506 scene_to_render: Default::default(),
507 renderer: Renderer::new(true, fonts),
508 last_fresh_keydown: None,
509 traffic_light_position: options
510 .titlebar
511 .as_ref()
512 .and_then(|titlebar| titlebar.traffic_light_position),
513 previous_modifiers_changed_event: None,
514 ime_state: ImeState::None,
515 ime_text: None,
516 })));
517
518 (*native_window).set_ivar(
519 WINDOW_STATE_IVAR,
520 Rc::into_raw(window.0.clone()) as *const c_void,
521 );
522 native_window.setDelegate_(native_window);
523 (*native_view).set_ivar(
524 WINDOW_STATE_IVAR,
525 Rc::into_raw(window.0.clone()) as *const c_void,
526 );
527
528 if let Some(title) = options.titlebar.as_ref().and_then(|t| t.title) {
529 native_window.setTitle_(NSString::alloc(nil).init_str(title));
530 }
531
532 native_window.setMovable_(options.is_movable as BOOL);
533
534 if options
535 .titlebar
536 .map_or(true, |titlebar| titlebar.appears_transparent)
537 {
538 native_window.setTitlebarAppearsTransparent_(YES);
539 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
540 }
541
542 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
543 native_view.setWantsBestResolutionOpenGLSurface_(YES);
544
545 // From winit crate: On Mojave, views automatically become layer-backed shortly after
546 // being added to a native_window. Changing the layer-backedness of a view breaks the
547 // association between the view and its associated OpenGL context. To work around this,
548 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
549 // itself and break the association with its context.
550 native_view.setWantsLayer(YES);
551 let _: () = msg_send![
552 native_view,
553 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
554 ];
555
556 native_window.setContentView_(native_view.autorelease());
557 native_window.makeFirstResponder_(native_view);
558
559 if options.center {
560 native_window.center();
561 }
562
563 match options.kind {
564 WindowKind::Normal => {
565 native_window.setLevel_(NSNormalWindowLevel);
566 native_window.setAcceptsMouseMovedEvents_(YES);
567 }
568 WindowKind::PopUp => {
569 // Use a tracking area to allow receiving MouseMoved events even when
570 // the window or application aren't active, which is often the case
571 // e.g. for notification windows.
572 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
573 let _: () = msg_send![
574 tracking_area,
575 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
576 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
577 owner: native_view
578 userInfo: nil
579 ];
580 let _: () =
581 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
582
583 native_window.setLevel_(NSPopUpWindowLevel);
584 let _: () = msg_send![
585 native_window,
586 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
587 ];
588 native_window.setCollectionBehavior_(
589 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
590 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
591 );
592 }
593 }
594 if options.focus {
595 native_window.makeKeyAndOrderFront_(nil);
596 } else {
597 native_window.orderFront_(nil);
598 }
599
600 window.0.borrow().move_traffic_light();
601 pool.drain();
602
603 window
604 }
605 }
606
607 pub fn key_window_id() -> Option<usize> {
608 unsafe {
609 let app = NSApplication::sharedApplication(nil);
610 let key_window: id = msg_send![app, keyWindow];
611 if msg_send![key_window, isKindOfClass: WINDOW_CLASS] {
612 let id = get_window_state(&*key_window).borrow().id;
613 Some(id)
614 } else {
615 None
616 }
617 }
618 }
619}
620
621impl Drop for Window {
622 fn drop(&mut self) {
623 let this = self.0.borrow();
624 let window = this.native_window;
625 this.executor
626 .spawn(async move {
627 unsafe {
628 window.close();
629 }
630 })
631 .detach();
632 }
633}
634
635impl platform::Window for Window {
636 fn bounds(&self) -> WindowBounds {
637 self.0.as_ref().borrow().bounds()
638 }
639
640 fn content_size(&self) -> Vector2F {
641 self.0.as_ref().borrow().content_size()
642 }
643
644 fn scale_factor(&self) -> f32 {
645 self.0.as_ref().borrow().scale_factor()
646 }
647
648 fn titlebar_height(&self) -> f32 {
649 self.0.as_ref().borrow().titlebar_height()
650 }
651
652 fn appearance(&self) -> crate::Appearance {
653 unsafe {
654 let appearance: id = msg_send![self.0.borrow().native_window, effectiveAppearance];
655 crate::Appearance::from_native(appearance)
656 }
657 }
658
659 fn screen(&self) -> Rc<dyn crate::Screen> {
660 unsafe {
661 Rc::new(Screen {
662 native_screen: self.0.as_ref().borrow().native_window.screen(),
663 })
664 }
665 }
666
667 fn as_any_mut(&mut self) -> &mut dyn Any {
668 self
669 }
670
671 fn set_input_handler(&mut self, input_handler: Box<dyn InputHandler>) {
672 self.0.as_ref().borrow_mut().input_handler = Some(input_handler);
673 }
674
675 fn prompt(
676 &self,
677 level: platform::PromptLevel,
678 msg: &str,
679 answers: &[&str],
680 ) -> oneshot::Receiver<usize> {
681 unsafe {
682 let alert: id = msg_send![class!(NSAlert), alloc];
683 let alert: id = msg_send![alert, init];
684 let alert_style = match level {
685 platform::PromptLevel::Info => 1,
686 platform::PromptLevel::Warning => 0,
687 platform::PromptLevel::Critical => 2,
688 };
689 let _: () = msg_send![alert, setAlertStyle: alert_style];
690 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
691 for (ix, answer) in answers.iter().enumerate() {
692 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
693 let _: () = msg_send![button, setTag: ix as NSInteger];
694 }
695 let (done_tx, done_rx) = oneshot::channel();
696 let done_tx = Cell::new(Some(done_tx));
697 let block = ConcreteBlock::new(move |answer: NSInteger| {
698 if let Some(mut done_tx) = done_tx.take() {
699 let _ = postage::sink::Sink::try_send(&mut done_tx, answer.try_into().unwrap());
700 }
701 });
702 let block = block.copy();
703 let native_window = self.0.borrow().native_window;
704 self.0
705 .borrow()
706 .executor
707 .spawn(async move {
708 let _: () = msg_send![
709 alert,
710 beginSheetModalForWindow: native_window
711 completionHandler: block
712 ];
713 })
714 .detach();
715
716 done_rx
717 }
718 }
719
720 fn activate(&self) {
721 let window = self.0.borrow().native_window;
722 self.0
723 .borrow()
724 .executor
725 .spawn(async move {
726 unsafe {
727 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
728 }
729 })
730 .detach();
731 }
732
733 fn set_title(&mut self, title: &str) {
734 unsafe {
735 let app = NSApplication::sharedApplication(nil);
736 let window = self.0.borrow().native_window;
737 let title = ns_string(title);
738 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
739 let _: () = msg_send![window, setTitle: title];
740 }
741 }
742
743 fn set_edited(&mut self, edited: bool) {
744 unsafe {
745 let window = self.0.borrow().native_window;
746 msg_send![window, setDocumentEdited: edited as BOOL]
747 }
748
749 // Changing the document edited state resets the traffic light position,
750 // so we have to move it again.
751 self.0.borrow().move_traffic_light();
752 }
753
754 fn show_character_palette(&self) {
755 unsafe {
756 let app = NSApplication::sharedApplication(nil);
757 let window = self.0.borrow().native_window;
758 let _: () = msg_send![app, orderFrontCharacterPalette: window];
759 }
760 }
761
762 fn minimize(&self) {
763 let window = self.0.borrow().native_window;
764 unsafe {
765 window.miniaturize_(nil);
766 }
767 }
768
769 fn zoom(&self) {
770 let this = self.0.borrow();
771 let window = this.native_window;
772 this.executor
773 .spawn(async move {
774 unsafe {
775 window.zoom_(nil);
776 }
777 })
778 .detach();
779 }
780
781 fn present_scene(&mut self, scene: Scene) {
782 self.0.as_ref().borrow_mut().present_scene(scene);
783 }
784
785 fn toggle_full_screen(&self) {
786 let this = self.0.borrow();
787 let window = this.native_window;
788 this.executor
789 .spawn(async move {
790 unsafe {
791 window.toggleFullScreen_(nil);
792 }
793 })
794 .detach();
795 }
796
797 fn on_event(&mut self, callback: Box<dyn FnMut(Event) -> bool>) {
798 self.0.as_ref().borrow_mut().event_callback = Some(callback);
799 }
800
801 fn on_active_status_change(&mut self, callback: Box<dyn FnMut(bool)>) {
802 self.0.as_ref().borrow_mut().activate_callback = Some(callback);
803 }
804
805 fn on_resize(&mut self, callback: Box<dyn FnMut()>) {
806 self.0.as_ref().borrow_mut().resize_callback = Some(callback);
807 }
808
809 fn on_fullscreen(&mut self, callback: Box<dyn FnMut(bool)>) {
810 self.0.as_ref().borrow_mut().fullscreen_callback = Some(callback);
811 }
812
813 fn on_moved(&mut self, callback: Box<dyn FnMut()>) {
814 self.0.as_ref().borrow_mut().moved_callback = Some(callback);
815 }
816
817 fn on_should_close(&mut self, callback: Box<dyn FnMut() -> bool>) {
818 self.0.as_ref().borrow_mut().should_close_callback = Some(callback);
819 }
820
821 fn on_close(&mut self, callback: Box<dyn FnOnce()>) {
822 self.0.as_ref().borrow_mut().close_callback = Some(callback);
823 }
824
825 fn on_appearance_changed(&mut self, callback: Box<dyn FnMut()>) {
826 self.0.borrow_mut().appearance_changed_callback = Some(callback);
827 }
828
829 fn is_topmost_for_position(&self, position: Vector2F) -> bool {
830 let self_borrow = self.0.borrow();
831 let self_id = self_borrow.id;
832
833 unsafe {
834 let app = NSApplication::sharedApplication(nil);
835
836 // Convert back to screen coordinates
837 let screen_point = position.to_screen_ns_point(
838 self_borrow.native_window,
839 self_borrow.content_size().y() as f64,
840 );
841
842 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
843 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
844
845 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
846 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
847 if is_panel == YES || is_window == YES {
848 let topmost_window_id = get_window_state(&*top_most_window).borrow().id;
849 topmost_window_id == self_id
850 } else {
851 // Someone else's window is on top
852 false
853 }
854 }
855 }
856}
857
858fn get_scale_factor(native_window: id) -> f32 {
859 unsafe {
860 let screen: id = msg_send![native_window, screen];
861 NSScreen::backingScaleFactor(screen) as f32
862 }
863}
864
865unsafe fn get_window_state(object: &Object) -> Rc<RefCell<WindowState>> {
866 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
867 let rc1 = Rc::from_raw(raw as *mut RefCell<WindowState>);
868 let rc2 = rc1.clone();
869 mem::forget(rc1);
870 rc2
871}
872
873unsafe fn drop_window_state(object: &Object) {
874 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
875 Rc::from_raw(raw as *mut RefCell<WindowState>);
876}
877
878extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
879 YES
880}
881
882extern "C" fn dealloc_window(this: &Object, _: Sel) {
883 unsafe {
884 drop_window_state(this);
885 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
886 }
887}
888
889extern "C" fn dealloc_view(this: &Object, _: Sel) {
890 unsafe {
891 drop_window_state(this);
892 let _: () = msg_send![super(this, class!(NSView)), dealloc];
893 }
894}
895
896extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
897 handle_key_event(this, native_event, true)
898}
899
900extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
901 handle_key_event(this, native_event, false);
902}
903
904extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
905 let window_state = unsafe { get_window_state(this) };
906 let mut window_state_borrow = window_state.as_ref().borrow_mut();
907
908 let window_height = window_state_borrow.content_size().y();
909 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
910
911 if let Some(event) = event {
912 if key_equivalent {
913 window_state_borrow.performed_key_equivalent = true;
914 } else if window_state_borrow.performed_key_equivalent {
915 return NO;
916 }
917
918 let function_is_held;
919 window_state_borrow.pending_key_down = match event {
920 Event::KeyDown(event) => {
921 let keydown = event.keystroke.clone();
922 // Ignore events from held-down keys after some of the initially-pressed keys
923 // were released.
924 if event.is_held {
925 if window_state_borrow.last_fresh_keydown.as_ref() != Some(&keydown) {
926 return YES;
927 }
928 } else {
929 window_state_borrow.last_fresh_keydown = Some(keydown);
930 }
931 function_is_held = event.keystroke.function;
932 Some((event, None))
933 }
934
935 _ => return NO,
936 };
937
938 drop(window_state_borrow);
939
940 if !function_is_held {
941 unsafe {
942 let input_context: id = msg_send![this, inputContext];
943 let _: BOOL = msg_send![input_context, handleEvent: native_event];
944 }
945 }
946
947 let mut handled = false;
948 let mut window_state_borrow = window_state.borrow_mut();
949 let ime_text = window_state_borrow.ime_text.clone();
950 if let Some((event, insert_text)) = window_state_borrow.pending_key_down.take() {
951 let is_held = event.is_held;
952 if let Some(mut callback) = window_state_borrow.event_callback.take() {
953 drop(window_state_borrow);
954
955 let is_composing =
956 with_input_handler(this, |input_handler| input_handler.marked_text_range())
957 .flatten()
958 .is_some();
959 if !is_composing {
960 handled = callback(Event::KeyDown(event));
961 }
962
963 if !handled {
964 if let Some(insert) = insert_text {
965 handled = true;
966 with_input_handler(this, |input_handler| {
967 input_handler
968 .replace_text_in_range(insert.replacement_range, &insert.text)
969 });
970 } else if !is_composing && is_held {
971 if let Some(last_insert_text) = ime_text {
972 //MacOS IME is a bit funky, and even when you've told it there's nothing to
973 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
974 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
975 with_input_handler(this, |input_handler| {
976 if input_handler.selected_text_range().is_none() {
977 handled = true;
978 input_handler.replace_text_in_range(None, &last_insert_text)
979 }
980 });
981 }
982 }
983 }
984
985 window_state.borrow_mut().event_callback = Some(callback);
986 }
987 } else {
988 handled = true;
989 }
990
991 handled as BOOL
992 } else {
993 NO
994 }
995}
996
997extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
998 let window_state = unsafe { get_window_state(this) };
999 let weak_window_state = Rc::downgrade(&window_state);
1000 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1001 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1002
1003 let window_height = window_state_borrow.content_size().y();
1004 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
1005 if let Some(event) = event {
1006 match &event {
1007 Event::MouseMoved(
1008 event @ MouseMovedEvent {
1009 pressed_button: Some(_),
1010 ..
1011 },
1012 ) => {
1013 window_state_borrow.synthetic_drag_counter += 1;
1014 window_state_borrow
1015 .executor
1016 .spawn(synthetic_drag(
1017 weak_window_state,
1018 window_state_borrow.synthetic_drag_counter,
1019 *event,
1020 ))
1021 .detach();
1022 }
1023
1024 Event::MouseMoved(_)
1025 if !(is_active || window_state_borrow.kind == WindowKind::PopUp) =>
1026 {
1027 return
1028 }
1029
1030 Event::MouseUp(MouseButtonEvent {
1031 button: MouseButton::Left,
1032 ..
1033 }) => {
1034 window_state_borrow.synthetic_drag_counter += 1;
1035 }
1036
1037 Event::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1038 // Only raise modifiers changed event when they have actually changed
1039 if let Some(Event::ModifiersChanged(ModifiersChangedEvent {
1040 modifiers: prev_modifiers,
1041 })) = &window_state_borrow.previous_modifiers_changed_event
1042 {
1043 if prev_modifiers == modifiers {
1044 return;
1045 }
1046 }
1047
1048 window_state_borrow.previous_modifiers_changed_event = Some(event.clone());
1049 }
1050
1051 _ => {}
1052 }
1053
1054 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1055 drop(window_state_borrow);
1056 callback(event);
1057 window_state.borrow_mut().event_callback = Some(callback);
1058 }
1059 }
1060}
1061
1062// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1063// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1064extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1065 let window_state = unsafe { get_window_state(this) };
1066 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1067
1068 let keystroke = Keystroke {
1069 cmd: true,
1070 ctrl: false,
1071 alt: false,
1072 shift: false,
1073 function: false,
1074 key: ".".into(),
1075 };
1076 let event = Event::KeyDown(KeyDownEvent {
1077 keystroke: keystroke.clone(),
1078 is_held: false,
1079 });
1080
1081 window_state_borrow.last_fresh_keydown = Some(keystroke);
1082 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1083 drop(window_state_borrow);
1084 callback(event);
1085 window_state.borrow_mut().event_callback = Some(callback);
1086 }
1087}
1088
1089extern "C" fn send_event(this: &Object, _: Sel, native_event: id) {
1090 unsafe {
1091 let _: () = msg_send![super(this, class!(NSWindow)), sendEvent: native_event];
1092 get_window_state(this).borrow_mut().performed_key_equivalent = false;
1093 }
1094}
1095
1096extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1097 let window_state = unsafe { get_window_state(this) };
1098 window_state.as_ref().borrow().move_traffic_light();
1099}
1100
1101extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1102 window_fullscreen_changed(this, true);
1103}
1104
1105extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1106 window_fullscreen_changed(this, false);
1107}
1108
1109fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1110 let window_state = unsafe { get_window_state(this) };
1111 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1112 if let Some(mut callback) = window_state_borrow.fullscreen_callback.take() {
1113 drop(window_state_borrow);
1114 callback(is_fullscreen);
1115 window_state.borrow_mut().fullscreen_callback = Some(callback);
1116 }
1117}
1118
1119extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1120 let window_state = unsafe { get_window_state(this) };
1121 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1122 if let Some(mut callback) = window_state_borrow.moved_callback.take() {
1123 drop(window_state_borrow);
1124 callback();
1125 window_state.borrow_mut().moved_callback = Some(callback);
1126 }
1127}
1128
1129extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1130 let window_state = unsafe { get_window_state(this) };
1131 let window_state_borrow = window_state.borrow();
1132 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1133
1134 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1135 // `windowDidBecomeKey` message to the previous key window even though that window
1136 // isn't actually key. This causes a bug if the application is later activated while
1137 // the pop-up is still open, making it impossible to activate the previous key window
1138 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1139 // the app and re-activate it, which is a pretty bad UX.
1140 // The following code detects the spurious event and invokes `resignKeyWindow`:
1141 // in theory, we're not supposed to invoke this method manually but it balances out
1142 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1143 if selector == sel!(windowDidBecomeKey:) {
1144 if !is_active {
1145 unsafe {
1146 let _: () = msg_send![window_state_borrow.native_window, resignKeyWindow];
1147 return;
1148 }
1149 }
1150 }
1151
1152 let executor = window_state_borrow.executor.clone();
1153 drop(window_state_borrow);
1154 executor
1155 .spawn(async move {
1156 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1157 if let Some(mut callback) = window_state_borrow.activate_callback.take() {
1158 drop(window_state_borrow);
1159 callback(is_active);
1160 window_state.borrow_mut().activate_callback = Some(callback);
1161 };
1162 })
1163 .detach();
1164}
1165
1166extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1167 let window_state = unsafe { get_window_state(this) };
1168 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1169 if let Some(mut callback) = window_state_borrow.should_close_callback.take() {
1170 drop(window_state_borrow);
1171 let should_close = callback();
1172 window_state.borrow_mut().should_close_callback = Some(callback);
1173 should_close as BOOL
1174 } else {
1175 YES
1176 }
1177}
1178
1179extern "C" fn close_window(this: &Object, _: Sel) {
1180 unsafe {
1181 let close_callback = {
1182 let window_state = get_window_state(this);
1183 window_state
1184 .as_ref()
1185 .try_borrow_mut()
1186 .ok()
1187 .and_then(|mut window_state| window_state.close_callback.take())
1188 };
1189
1190 if let Some(callback) = close_callback {
1191 callback();
1192 }
1193
1194 let _: () = msg_send![super(this, class!(NSWindow)), close];
1195 }
1196}
1197
1198extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1199 let window_state = unsafe { get_window_state(this) };
1200 let window_state = window_state.as_ref().borrow();
1201 window_state.renderer.layer().as_ptr() as id
1202}
1203
1204extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1205 let window_state = unsafe { get_window_state(this) };
1206 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1207
1208 unsafe {
1209 let scale_factor = window_state_borrow.scale_factor() as f64;
1210 let size = window_state_borrow.content_size();
1211 let drawable_size: NSSize = NSSize {
1212 width: size.x() as f64 * scale_factor,
1213 height: size.y() as f64 * scale_factor,
1214 };
1215
1216 let _: () = msg_send![
1217 window_state_borrow.renderer.layer(),
1218 setContentsScale: scale_factor
1219 ];
1220 let _: () = msg_send![
1221 window_state_borrow.renderer.layer(),
1222 setDrawableSize: drawable_size
1223 ];
1224 }
1225
1226 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1227 drop(window_state_borrow);
1228 callback();
1229 window_state.as_ref().borrow_mut().resize_callback = Some(callback);
1230 };
1231}
1232
1233extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1234 let window_state = unsafe { get_window_state(this) };
1235 let window_state_borrow = window_state.as_ref().borrow();
1236
1237 if window_state_borrow.content_size() == vec2f(size.width as f32, size.height as f32) {
1238 return;
1239 }
1240
1241 unsafe {
1242 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1243 }
1244
1245 let scale_factor = window_state_borrow.scale_factor() as f64;
1246 let drawable_size: NSSize = NSSize {
1247 width: size.width * scale_factor,
1248 height: size.height * scale_factor,
1249 };
1250
1251 unsafe {
1252 let _: () = msg_send![
1253 window_state_borrow.renderer.layer(),
1254 setDrawableSize: drawable_size
1255 ];
1256 }
1257
1258 drop(window_state_borrow);
1259 let mut window_state_borrow = window_state.borrow_mut();
1260 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1261 drop(window_state_borrow);
1262 callback();
1263 window_state.borrow_mut().resize_callback = Some(callback);
1264 };
1265}
1266
1267extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1268 unsafe {
1269 let window_state = get_window_state(this);
1270 let mut window_state = window_state.as_ref().borrow_mut();
1271 if let Some(scene) = window_state.scene_to_render.take() {
1272 window_state.renderer.render(&scene);
1273 };
1274 }
1275}
1276
1277extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1278 unsafe { msg_send![class!(NSArray), array] }
1279}
1280
1281extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1282 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1283 .flatten()
1284 .is_some() as BOOL
1285}
1286
1287extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1288 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1289 .flatten()
1290 .map_or(NSRange::invalid(), |range| range.into())
1291}
1292
1293extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1294 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1295 .flatten()
1296 .map_or(NSRange::invalid(), |range| range.into())
1297}
1298
1299extern "C" fn first_rect_for_character_range(
1300 this: &Object,
1301 _: Sel,
1302 range: NSRange,
1303 _: id,
1304) -> NSRect {
1305 let frame = unsafe {
1306 let window = get_window_state(this).borrow().native_window;
1307 NSView::frame(window)
1308 };
1309 with_input_handler(this, |input_handler| {
1310 input_handler.rect_for_range(range.to_range()?)
1311 })
1312 .flatten()
1313 .map_or(
1314 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1315 |rect| {
1316 NSRect::new(
1317 NSPoint::new(
1318 frame.origin.x + rect.origin_x() as f64,
1319 frame.origin.y + frame.size.height - rect.origin_y() as f64,
1320 ),
1321 NSSize::new(rect.width() as f64, rect.height() as f64),
1322 )
1323 },
1324 )
1325}
1326
1327extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1328 unsafe {
1329 let window_state = get_window_state(this);
1330 let mut window_state_borrow = window_state.borrow_mut();
1331 let pending_key_down = window_state_borrow.pending_key_down.take();
1332 drop(window_state_borrow);
1333
1334 let is_attributed_string: BOOL =
1335 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1336 let text: id = if is_attributed_string == YES {
1337 msg_send![text, string]
1338 } else {
1339 text
1340 };
1341 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1342 .to_str()
1343 .unwrap();
1344 let replacement_range = replacement_range.to_range();
1345
1346 window_state.borrow_mut().ime_text = Some(text.to_string());
1347 window_state.borrow_mut().ime_state = ImeState::Acted;
1348
1349 let is_composing =
1350 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1351 .flatten()
1352 .is_some();
1353
1354 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1355 with_input_handler(this, |input_handler| {
1356 input_handler.replace_text_in_range(replacement_range, text)
1357 });
1358 } else {
1359 let mut pending_key_down = pending_key_down.unwrap();
1360 pending_key_down.1 = Some(InsertText {
1361 replacement_range,
1362 text: text.to_string(),
1363 });
1364 window_state.borrow_mut().pending_key_down = Some(pending_key_down);
1365 }
1366 }
1367}
1368
1369extern "C" fn set_marked_text(
1370 this: &Object,
1371 _: Sel,
1372 text: id,
1373 selected_range: NSRange,
1374 replacement_range: NSRange,
1375) {
1376 unsafe {
1377 let window_state = get_window_state(this);
1378 window_state.borrow_mut().pending_key_down.take();
1379
1380 let is_attributed_string: BOOL =
1381 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1382 let text: id = if is_attributed_string == YES {
1383 msg_send![text, string]
1384 } else {
1385 text
1386 };
1387 let selected_range = selected_range.to_range();
1388 let replacement_range = replacement_range.to_range();
1389 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1390 .to_str()
1391 .unwrap();
1392
1393 window_state.borrow_mut().ime_state = ImeState::Acted;
1394 window_state.borrow_mut().ime_text = Some(text.to_string());
1395
1396 with_input_handler(this, |input_handler| {
1397 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1398 });
1399 }
1400}
1401
1402extern "C" fn unmark_text(this: &Object, _: Sel) {
1403 unsafe {
1404 let state = get_window_state(this);
1405 let mut borrow = state.borrow_mut();
1406 borrow.ime_state = ImeState::Acted;
1407 borrow.ime_text.take();
1408 }
1409
1410 with_input_handler(this, |input_handler| input_handler.unmark_text());
1411}
1412
1413extern "C" fn attributed_substring_for_proposed_range(
1414 this: &Object,
1415 _: Sel,
1416 range: NSRange,
1417 _actual_range: *mut c_void,
1418) -> id {
1419 with_input_handler(this, |input_handler| {
1420 let range = range.to_range()?;
1421 if range.is_empty() {
1422 return None;
1423 }
1424
1425 let selected_text = input_handler.text_for_range(range)?;
1426 unsafe {
1427 let string: id = msg_send![class!(NSAttributedString), alloc];
1428 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1429 Some(string)
1430 }
1431 })
1432 .flatten()
1433 .unwrap_or(nil)
1434}
1435
1436extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1437 unsafe {
1438 let state = get_window_state(this);
1439 let mut borrow = state.borrow_mut();
1440 borrow.ime_state = ImeState::Continue;
1441 borrow.ime_text.take();
1442 }
1443}
1444
1445extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1446 unsafe {
1447 let state = get_window_state(this);
1448 let mut state_borrow = state.as_ref().borrow_mut();
1449 if let Some(mut callback) = state_borrow.appearance_changed_callback.take() {
1450 drop(state_borrow);
1451 callback();
1452 state.borrow_mut().appearance_changed_callback = Some(callback);
1453 }
1454 }
1455}
1456
1457extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1458 unsafe {
1459 let state = get_window_state(this);
1460 let state_borrow = state.as_ref().borrow();
1461 return if state_borrow.kind == WindowKind::PopUp {
1462 YES
1463 } else {
1464 NO
1465 };
1466 }
1467}
1468
1469async fn synthetic_drag(
1470 window_state: Weak<RefCell<WindowState>>,
1471 drag_id: usize,
1472 event: MouseMovedEvent,
1473) {
1474 loop {
1475 Timer::after(Duration::from_millis(16)).await;
1476 if let Some(window_state) = window_state.upgrade() {
1477 let mut window_state_borrow = window_state.borrow_mut();
1478 if window_state_borrow.synthetic_drag_counter == drag_id {
1479 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1480 drop(window_state_borrow);
1481 callback(Event::MouseMoved(event));
1482 window_state.borrow_mut().event_callback = Some(callback);
1483 }
1484 } else {
1485 break;
1486 }
1487 }
1488 }
1489}
1490
1491fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1492where
1493 F: FnOnce(&mut dyn InputHandler) -> R,
1494{
1495 let window_state = unsafe { get_window_state(window) };
1496 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1497 if let Some(mut input_handler) = window_state_borrow.input_handler.take() {
1498 drop(window_state_borrow);
1499 let result = f(input_handler.as_mut());
1500 window_state.borrow_mut().input_handler = Some(input_handler);
1501 Some(result)
1502 } else {
1503 None
1504 }
1505}