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::{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 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 dbg!(screen_frame.as_CGRect(), ns_rect.as_CGRect());
498 if ns_rect.intersects(screen_frame) {
499 native_window.setFrame_display_(ns_rect, YES);
500 } else {
501 native_window.setFrame_display_(screen_frame, YES);
502 }
503 }
504 }
505
506 let native_view: id = msg_send![VIEW_CLASS, alloc];
507 let native_view = NSView::init(native_view);
508
509 assert!(!native_view.is_null());
510
511 let window = Self(Rc::new(RefCell::new(WindowState {
512 id,
513 native_window,
514 kind: options.kind,
515 event_callback: None,
516 resize_callback: None,
517 should_close_callback: None,
518 close_callback: None,
519 activate_callback: None,
520 fullscreen_callback: None,
521 moved_callback: None,
522 appearance_changed_callback: None,
523 input_handler: None,
524 pending_key_down: None,
525 performed_key_equivalent: false,
526 synthetic_drag_counter: 0,
527 executor,
528 scene_to_render: Default::default(),
529 renderer: Renderer::new(true, fonts),
530 last_fresh_keydown: None,
531 traffic_light_position: options
532 .titlebar
533 .as_ref()
534 .and_then(|titlebar| titlebar.traffic_light_position),
535 previous_modifiers_changed_event: None,
536 ime_state: ImeState::None,
537 ime_text: None,
538 })));
539
540 (*native_window).set_ivar(
541 WINDOW_STATE_IVAR,
542 Rc::into_raw(window.0.clone()) as *const c_void,
543 );
544 native_window.setDelegate_(native_window);
545 (*native_view).set_ivar(
546 WINDOW_STATE_IVAR,
547 Rc::into_raw(window.0.clone()) as *const c_void,
548 );
549
550 if let Some(title) = options.titlebar.as_ref().and_then(|t| t.title) {
551 native_window.setTitle_(NSString::alloc(nil).init_str(title));
552 }
553
554 native_window.setMovable_(options.is_movable as BOOL);
555
556 if options
557 .titlebar
558 .map_or(true, |titlebar| titlebar.appears_transparent)
559 {
560 native_window.setTitlebarAppearsTransparent_(YES);
561 native_window.setTitleVisibility_(NSWindowTitleVisibility::NSWindowTitleHidden);
562 }
563
564 native_view.setAutoresizingMask_(NSViewWidthSizable | NSViewHeightSizable);
565 native_view.setWantsBestResolutionOpenGLSurface_(YES);
566
567 // From winit crate: On Mojave, views automatically become layer-backed shortly after
568 // being added to a native_window. Changing the layer-backedness of a view breaks the
569 // association between the view and its associated OpenGL context. To work around this,
570 // on we explicitly make the view layer-backed up front so that AppKit doesn't do it
571 // itself and break the association with its context.
572 native_view.setWantsLayer(YES);
573 let _: () = msg_send![
574 native_view,
575 setLayerContentsRedrawPolicy: NSViewLayerContentsRedrawDuringViewResize
576 ];
577
578 native_window.setContentView_(native_view.autorelease());
579 native_window.makeFirstResponder_(native_view);
580
581 if options.center {
582 native_window.center();
583 }
584
585 match options.kind {
586 WindowKind::Normal => {
587 native_window.setLevel_(NSNormalWindowLevel);
588 native_window.setAcceptsMouseMovedEvents_(YES);
589 }
590 WindowKind::PopUp => {
591 // Use a tracking area to allow receiving MouseMoved events even when
592 // the window or application aren't active, which is often the case
593 // e.g. for notification windows.
594 let tracking_area: id = msg_send![class!(NSTrackingArea), alloc];
595 let _: () = msg_send![
596 tracking_area,
597 initWithRect: NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.))
598 options: NSTrackingMouseEnteredAndExited | NSTrackingMouseMoved | NSTrackingActiveAlways | NSTrackingInVisibleRect
599 owner: native_view
600 userInfo: nil
601 ];
602 let _: () =
603 msg_send![native_view, addTrackingArea: tracking_area.autorelease()];
604
605 native_window.setLevel_(NSPopUpWindowLevel);
606 let _: () = msg_send![
607 native_window,
608 setAnimationBehavior: NSWindowAnimationBehaviorUtilityWindow
609 ];
610 native_window.setCollectionBehavior_(
611 NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces |
612 NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary
613 );
614 }
615 }
616 if options.focus {
617 native_window.makeKeyAndOrderFront_(nil);
618 } else {
619 native_window.orderFront_(nil);
620 }
621
622 window.0.borrow().move_traffic_light();
623 pool.drain();
624
625 window
626 }
627 }
628
629 pub fn main_window_id() -> Option<usize> {
630 unsafe {
631 let app = NSApplication::sharedApplication(nil);
632 let main_window: id = msg_send![app, mainWindow];
633 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
634 let id = get_window_state(&*main_window).borrow().id;
635 Some(id)
636 } else {
637 None
638 }
639 }
640 }
641}
642
643impl Drop for Window {
644 fn drop(&mut self) {
645 let this = self.0.borrow();
646 let window = this.native_window;
647 this.executor
648 .spawn(async move {
649 unsafe {
650 window.close();
651 }
652 })
653 .detach();
654 }
655}
656
657impl platform::Window for Window {
658 fn bounds(&self) -> WindowBounds {
659 self.0.as_ref().borrow().bounds()
660 }
661
662 fn content_size(&self) -> Vector2F {
663 self.0.as_ref().borrow().content_size()
664 }
665
666 fn scale_factor(&self) -> f32 {
667 self.0.as_ref().borrow().scale_factor()
668 }
669
670 fn titlebar_height(&self) -> f32 {
671 self.0.as_ref().borrow().titlebar_height()
672 }
673
674 fn appearance(&self) -> crate::Appearance {
675 unsafe {
676 let appearance: id = msg_send![self.0.borrow().native_window, effectiveAppearance];
677 crate::Appearance::from_native(appearance)
678 }
679 }
680
681 fn screen(&self) -> Rc<dyn crate::Screen> {
682 unsafe {
683 Rc::new(Screen {
684 native_screen: self.0.as_ref().borrow().native_window.screen(),
685 })
686 }
687 }
688
689 fn as_any_mut(&mut self) -> &mut dyn Any {
690 self
691 }
692
693 fn set_input_handler(&mut self, input_handler: Box<dyn InputHandler>) {
694 self.0.as_ref().borrow_mut().input_handler = Some(input_handler);
695 }
696
697 fn prompt(
698 &self,
699 level: platform::PromptLevel,
700 msg: &str,
701 answers: &[&str],
702 ) -> oneshot::Receiver<usize> {
703 unsafe {
704 let alert: id = msg_send![class!(NSAlert), alloc];
705 let alert: id = msg_send![alert, init];
706 let alert_style = match level {
707 platform::PromptLevel::Info => 1,
708 platform::PromptLevel::Warning => 0,
709 platform::PromptLevel::Critical => 2,
710 };
711 let _: () = msg_send![alert, setAlertStyle: alert_style];
712 let _: () = msg_send![alert, setMessageText: ns_string(msg)];
713 for (ix, answer) in answers.iter().enumerate() {
714 let button: id = msg_send![alert, addButtonWithTitle: ns_string(answer)];
715 let _: () = msg_send![button, setTag: ix as NSInteger];
716 }
717 let (done_tx, done_rx) = oneshot::channel();
718 let done_tx = Cell::new(Some(done_tx));
719 let block = ConcreteBlock::new(move |answer: NSInteger| {
720 if let Some(mut done_tx) = done_tx.take() {
721 let _ = postage::sink::Sink::try_send(&mut done_tx, answer.try_into().unwrap());
722 }
723 });
724 let block = block.copy();
725 let native_window = self.0.borrow().native_window;
726 self.0
727 .borrow()
728 .executor
729 .spawn(async move {
730 let _: () = msg_send![
731 alert,
732 beginSheetModalForWindow: native_window
733 completionHandler: block
734 ];
735 })
736 .detach();
737
738 done_rx
739 }
740 }
741
742 fn activate(&self) {
743 let window = self.0.borrow().native_window;
744 self.0
745 .borrow()
746 .executor
747 .spawn(async move {
748 unsafe {
749 let _: () = msg_send![window, makeKeyAndOrderFront: nil];
750 }
751 })
752 .detach();
753 }
754
755 fn set_title(&mut self, title: &str) {
756 unsafe {
757 let app = NSApplication::sharedApplication(nil);
758 let window = self.0.borrow().native_window;
759 let title = ns_string(title);
760 let _: () = msg_send![app, changeWindowsItem:window title:title filename:false];
761 let _: () = msg_send![window, setTitle: title];
762 self.0.borrow().move_traffic_light();
763 }
764 }
765
766 fn set_edited(&mut self, edited: bool) {
767 unsafe {
768 let window = self.0.borrow().native_window;
769 msg_send![window, setDocumentEdited: edited as BOOL]
770 }
771
772 // Changing the document edited state resets the traffic light position,
773 // so we have to move it again.
774 self.0.borrow().move_traffic_light();
775 }
776
777 fn show_character_palette(&self) {
778 unsafe {
779 let app = NSApplication::sharedApplication(nil);
780 let window = self.0.borrow().native_window;
781 let _: () = msg_send![app, orderFrontCharacterPalette: window];
782 }
783 }
784
785 fn minimize(&self) {
786 let window = self.0.borrow().native_window;
787 unsafe {
788 window.miniaturize_(nil);
789 }
790 }
791
792 fn zoom(&self) {
793 let this = self.0.borrow();
794 let window = this.native_window;
795 this.executor
796 .spawn(async move {
797 unsafe {
798 window.zoom_(nil);
799 }
800 })
801 .detach();
802 }
803
804 fn present_scene(&mut self, scene: Scene) {
805 self.0.as_ref().borrow_mut().present_scene(scene);
806 }
807
808 fn toggle_full_screen(&self) {
809 let this = self.0.borrow();
810 let window = this.native_window;
811 this.executor
812 .spawn(async move {
813 unsafe {
814 window.toggleFullScreen_(nil);
815 }
816 })
817 .detach();
818 }
819
820 fn on_event(&mut self, callback: Box<dyn FnMut(Event) -> bool>) {
821 self.0.as_ref().borrow_mut().event_callback = Some(callback);
822 }
823
824 fn on_active_status_change(&mut self, callback: Box<dyn FnMut(bool)>) {
825 self.0.as_ref().borrow_mut().activate_callback = Some(callback);
826 }
827
828 fn on_resize(&mut self, callback: Box<dyn FnMut()>) {
829 self.0.as_ref().borrow_mut().resize_callback = Some(callback);
830 }
831
832 fn on_fullscreen(&mut self, callback: Box<dyn FnMut(bool)>) {
833 self.0.as_ref().borrow_mut().fullscreen_callback = Some(callback);
834 }
835
836 fn on_moved(&mut self, callback: Box<dyn FnMut()>) {
837 self.0.as_ref().borrow_mut().moved_callback = Some(callback);
838 }
839
840 fn on_should_close(&mut self, callback: Box<dyn FnMut() -> bool>) {
841 self.0.as_ref().borrow_mut().should_close_callback = Some(callback);
842 }
843
844 fn on_close(&mut self, callback: Box<dyn FnOnce()>) {
845 self.0.as_ref().borrow_mut().close_callback = Some(callback);
846 }
847
848 fn on_appearance_changed(&mut self, callback: Box<dyn FnMut()>) {
849 self.0.borrow_mut().appearance_changed_callback = Some(callback);
850 }
851
852 fn is_topmost_for_position(&self, position: Vector2F) -> bool {
853 let self_borrow = self.0.borrow();
854 let self_id = self_borrow.id;
855
856 unsafe {
857 let app = NSApplication::sharedApplication(nil);
858
859 // Convert back to screen coordinates
860 let screen_point = position.to_screen_ns_point(
861 self_borrow.native_window,
862 self_borrow.content_size().y() as f64,
863 );
864
865 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
866 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
867
868 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
869 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
870 if is_panel == YES || is_window == YES {
871 let topmost_window_id = get_window_state(&*top_most_window).borrow().id;
872 topmost_window_id == self_id
873 } else {
874 // Someone else's window is on top
875 false
876 }
877 }
878 }
879}
880
881fn get_scale_factor(native_window: id) -> f32 {
882 unsafe {
883 let screen: id = msg_send![native_window, screen];
884 NSScreen::backingScaleFactor(screen) as f32
885 }
886}
887
888unsafe fn get_window_state(object: &Object) -> Rc<RefCell<WindowState>> {
889 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
890 let rc1 = Rc::from_raw(raw as *mut RefCell<WindowState>);
891 let rc2 = rc1.clone();
892 mem::forget(rc1);
893 rc2
894}
895
896unsafe fn drop_window_state(object: &Object) {
897 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
898 Rc::from_raw(raw as *mut RefCell<WindowState>);
899}
900
901extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
902 YES
903}
904
905extern "C" fn dealloc_window(this: &Object, _: Sel) {
906 unsafe {
907 drop_window_state(this);
908 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
909 }
910}
911
912extern "C" fn dealloc_view(this: &Object, _: Sel) {
913 unsafe {
914 drop_window_state(this);
915 let _: () = msg_send![super(this, class!(NSView)), dealloc];
916 }
917}
918
919extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
920 handle_key_event(this, native_event, true)
921}
922
923extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
924 handle_key_event(this, native_event, false);
925}
926
927extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
928 let window_state = unsafe { get_window_state(this) };
929 let mut window_state_borrow = window_state.as_ref().borrow_mut();
930
931 let window_height = window_state_borrow.content_size().y();
932 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
933
934 if let Some(event) = event {
935 if key_equivalent {
936 window_state_borrow.performed_key_equivalent = true;
937 } else if window_state_borrow.performed_key_equivalent {
938 return NO;
939 }
940
941 let function_is_held;
942 window_state_borrow.pending_key_down = match event {
943 Event::KeyDown(event) => {
944 let keydown = event.keystroke.clone();
945 // Ignore events from held-down keys after some of the initially-pressed keys
946 // were released.
947 if event.is_held {
948 if window_state_borrow.last_fresh_keydown.as_ref() != Some(&keydown) {
949 return YES;
950 }
951 } else {
952 window_state_borrow.last_fresh_keydown = Some(keydown);
953 }
954 function_is_held = event.keystroke.function;
955 Some((event, None))
956 }
957
958 _ => return NO,
959 };
960
961 drop(window_state_borrow);
962
963 if !function_is_held {
964 unsafe {
965 let input_context: id = msg_send![this, inputContext];
966 let _: BOOL = msg_send![input_context, handleEvent: native_event];
967 }
968 }
969
970 let mut handled = false;
971 let mut window_state_borrow = window_state.borrow_mut();
972 let ime_text = window_state_borrow.ime_text.clone();
973 if let Some((event, insert_text)) = window_state_borrow.pending_key_down.take() {
974 let is_held = event.is_held;
975 if let Some(mut callback) = window_state_borrow.event_callback.take() {
976 drop(window_state_borrow);
977
978 let is_composing =
979 with_input_handler(this, |input_handler| input_handler.marked_text_range())
980 .flatten()
981 .is_some();
982 if !is_composing {
983 handled = callback(Event::KeyDown(event));
984 }
985
986 if !handled {
987 if let Some(insert) = insert_text {
988 handled = true;
989 with_input_handler(this, |input_handler| {
990 input_handler
991 .replace_text_in_range(insert.replacement_range, &insert.text)
992 });
993 } else if !is_composing && is_held {
994 if let Some(last_insert_text) = ime_text {
995 //MacOS IME is a bit funky, and even when you've told it there's nothing to
996 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
997 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
998 with_input_handler(this, |input_handler| {
999 if input_handler.selected_text_range().is_none() {
1000 handled = true;
1001 input_handler.replace_text_in_range(None, &last_insert_text)
1002 }
1003 });
1004 }
1005 }
1006 }
1007
1008 window_state.borrow_mut().event_callback = Some(callback);
1009 }
1010 } else {
1011 handled = true;
1012 }
1013
1014 handled as BOOL
1015 } else {
1016 NO
1017 }
1018}
1019
1020extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
1021 let window_state = unsafe { get_window_state(this) };
1022 let weak_window_state = Rc::downgrade(&window_state);
1023 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1024 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1025
1026 let window_height = window_state_borrow.content_size().y();
1027 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
1028 if let Some(event) = event {
1029 match &event {
1030 Event::MouseMoved(
1031 event @ MouseMovedEvent {
1032 pressed_button: Some(_),
1033 ..
1034 },
1035 ) => {
1036 window_state_borrow.synthetic_drag_counter += 1;
1037 window_state_borrow
1038 .executor
1039 .spawn(synthetic_drag(
1040 weak_window_state,
1041 window_state_borrow.synthetic_drag_counter,
1042 *event,
1043 ))
1044 .detach();
1045 }
1046
1047 Event::MouseMoved(_)
1048 if !(is_active || window_state_borrow.kind == WindowKind::PopUp) =>
1049 {
1050 return
1051 }
1052
1053 Event::MouseUp(MouseButtonEvent {
1054 button: MouseButton::Left,
1055 ..
1056 }) => {
1057 window_state_borrow.synthetic_drag_counter += 1;
1058 }
1059
1060 Event::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1061 // Only raise modifiers changed event when they have actually changed
1062 if let Some(Event::ModifiersChanged(ModifiersChangedEvent {
1063 modifiers: prev_modifiers,
1064 })) = &window_state_borrow.previous_modifiers_changed_event
1065 {
1066 if prev_modifiers == modifiers {
1067 return;
1068 }
1069 }
1070
1071 window_state_borrow.previous_modifiers_changed_event = Some(event.clone());
1072 }
1073
1074 _ => {}
1075 }
1076
1077 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1078 drop(window_state_borrow);
1079 callback(event);
1080 window_state.borrow_mut().event_callback = Some(callback);
1081 }
1082 }
1083}
1084
1085// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1086// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1087extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1088 let window_state = unsafe { get_window_state(this) };
1089 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1090
1091 let keystroke = Keystroke {
1092 cmd: true,
1093 ctrl: false,
1094 alt: false,
1095 shift: false,
1096 function: false,
1097 key: ".".into(),
1098 };
1099 let event = Event::KeyDown(KeyDownEvent {
1100 keystroke: keystroke.clone(),
1101 is_held: false,
1102 });
1103
1104 window_state_borrow.last_fresh_keydown = Some(keystroke);
1105 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1106 drop(window_state_borrow);
1107 callback(event);
1108 window_state.borrow_mut().event_callback = Some(callback);
1109 }
1110}
1111
1112extern "C" fn send_event(this: &Object, _: Sel, native_event: id) {
1113 unsafe {
1114 let _: () = msg_send![super(this, class!(NSWindow)), sendEvent: native_event];
1115 get_window_state(this).borrow_mut().performed_key_equivalent = false;
1116 }
1117}
1118
1119extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1120 let window_state = unsafe { get_window_state(this) };
1121 window_state.as_ref().borrow().move_traffic_light();
1122}
1123
1124extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1125 window_fullscreen_changed(this, true);
1126}
1127
1128extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1129 window_fullscreen_changed(this, false);
1130}
1131
1132fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1133 let window_state = unsafe { get_window_state(this) };
1134 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1135 if let Some(mut callback) = window_state_borrow.fullscreen_callback.take() {
1136 drop(window_state_borrow);
1137 callback(is_fullscreen);
1138 window_state.borrow_mut().fullscreen_callback = Some(callback);
1139 }
1140}
1141
1142extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1143 let window_state = unsafe { get_window_state(this) };
1144 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1145 if let Some(mut callback) = window_state_borrow.moved_callback.take() {
1146 drop(window_state_borrow);
1147 callback();
1148 window_state.borrow_mut().moved_callback = Some(callback);
1149 }
1150}
1151
1152extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1153 let window_state = unsafe { get_window_state(this) };
1154 let window_state_borrow = window_state.borrow();
1155 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1156
1157 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1158 // `windowDidBecomeKey` message to the previous key window even though that window
1159 // isn't actually key. This causes a bug if the application is later activated while
1160 // the pop-up is still open, making it impossible to activate the previous key window
1161 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1162 // the app and re-activate it, which is a pretty bad UX.
1163 // The following code detects the spurious event and invokes `resignKeyWindow`:
1164 // in theory, we're not supposed to invoke this method manually but it balances out
1165 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1166 if selector == sel!(windowDidBecomeKey:) {
1167 if !is_active {
1168 unsafe {
1169 let _: () = msg_send![window_state_borrow.native_window, resignKeyWindow];
1170 return;
1171 }
1172 }
1173 }
1174
1175 let executor = window_state_borrow.executor.clone();
1176 drop(window_state_borrow);
1177 executor
1178 .spawn(async move {
1179 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1180 if let Some(mut callback) = window_state_borrow.activate_callback.take() {
1181 drop(window_state_borrow);
1182 callback(is_active);
1183 window_state.borrow_mut().activate_callback = Some(callback);
1184 };
1185 })
1186 .detach();
1187}
1188
1189extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1190 let window_state = unsafe { get_window_state(this) };
1191 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1192 if let Some(mut callback) = window_state_borrow.should_close_callback.take() {
1193 drop(window_state_borrow);
1194 let should_close = callback();
1195 window_state.borrow_mut().should_close_callback = Some(callback);
1196 should_close as BOOL
1197 } else {
1198 YES
1199 }
1200}
1201
1202extern "C" fn close_window(this: &Object, _: Sel) {
1203 unsafe {
1204 let close_callback = {
1205 let window_state = get_window_state(this);
1206 window_state
1207 .as_ref()
1208 .try_borrow_mut()
1209 .ok()
1210 .and_then(|mut window_state| window_state.close_callback.take())
1211 };
1212
1213 if let Some(callback) = close_callback {
1214 callback();
1215 }
1216
1217 let _: () = msg_send![super(this, class!(NSWindow)), close];
1218 }
1219}
1220
1221extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1222 let window_state = unsafe { get_window_state(this) };
1223 let window_state = window_state.as_ref().borrow();
1224 window_state.renderer.layer().as_ptr() as id
1225}
1226
1227extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1228 let window_state = unsafe { get_window_state(this) };
1229 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1230
1231 unsafe {
1232 let scale_factor = window_state_borrow.scale_factor() as f64;
1233 let size = window_state_borrow.content_size();
1234 let drawable_size: NSSize = NSSize {
1235 width: size.x() as f64 * scale_factor,
1236 height: size.y() as f64 * scale_factor,
1237 };
1238
1239 let _: () = msg_send![
1240 window_state_borrow.renderer.layer(),
1241 setContentsScale: scale_factor
1242 ];
1243 let _: () = msg_send![
1244 window_state_borrow.renderer.layer(),
1245 setDrawableSize: drawable_size
1246 ];
1247 }
1248
1249 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1250 drop(window_state_borrow);
1251 callback();
1252 window_state.as_ref().borrow_mut().resize_callback = Some(callback);
1253 };
1254}
1255
1256extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1257 let window_state = unsafe { get_window_state(this) };
1258 let window_state_borrow = window_state.as_ref().borrow();
1259
1260 if window_state_borrow.content_size() == vec2f(size.width as f32, size.height as f32) {
1261 return;
1262 }
1263
1264 unsafe {
1265 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1266 }
1267
1268 let scale_factor = window_state_borrow.scale_factor() as f64;
1269 let drawable_size: NSSize = NSSize {
1270 width: size.width * scale_factor,
1271 height: size.height * scale_factor,
1272 };
1273
1274 unsafe {
1275 let _: () = msg_send![
1276 window_state_borrow.renderer.layer(),
1277 setDrawableSize: drawable_size
1278 ];
1279 }
1280
1281 drop(window_state_borrow);
1282 let mut window_state_borrow = window_state.borrow_mut();
1283 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1284 drop(window_state_borrow);
1285 callback();
1286 window_state.borrow_mut().resize_callback = Some(callback);
1287 };
1288}
1289
1290extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1291 unsafe {
1292 let window_state = get_window_state(this);
1293 let mut window_state = window_state.as_ref().borrow_mut();
1294 if let Some(scene) = window_state.scene_to_render.take() {
1295 window_state.renderer.render(&scene);
1296 };
1297 }
1298}
1299
1300extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1301 unsafe { msg_send![class!(NSArray), array] }
1302}
1303
1304extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1305 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1306 .flatten()
1307 .is_some() as BOOL
1308}
1309
1310extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1311 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1312 .flatten()
1313 .map_or(NSRange::invalid(), |range| range.into())
1314}
1315
1316extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1317 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1318 .flatten()
1319 .map_or(NSRange::invalid(), |range| range.into())
1320}
1321
1322extern "C" fn first_rect_for_character_range(
1323 this: &Object,
1324 _: Sel,
1325 range: NSRange,
1326 _: id,
1327) -> NSRect {
1328 let frame = unsafe {
1329 let window = get_window_state(this).borrow().native_window;
1330 NSView::frame(window)
1331 };
1332 with_input_handler(this, |input_handler| {
1333 input_handler.rect_for_range(range.to_range()?)
1334 })
1335 .flatten()
1336 .map_or(
1337 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1338 |rect| {
1339 NSRect::new(
1340 NSPoint::new(
1341 frame.origin.x + rect.origin_x() as f64,
1342 frame.origin.y + frame.size.height - rect.origin_y() as f64,
1343 ),
1344 NSSize::new(rect.width() as f64, rect.height() as f64),
1345 )
1346 },
1347 )
1348}
1349
1350extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1351 unsafe {
1352 let window_state = get_window_state(this);
1353 let mut window_state_borrow = window_state.borrow_mut();
1354 let pending_key_down = window_state_borrow.pending_key_down.take();
1355 drop(window_state_borrow);
1356
1357 let is_attributed_string: BOOL =
1358 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1359 let text: id = if is_attributed_string == YES {
1360 msg_send![text, string]
1361 } else {
1362 text
1363 };
1364 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1365 .to_str()
1366 .unwrap();
1367 let replacement_range = replacement_range.to_range();
1368
1369 window_state.borrow_mut().ime_text = Some(text.to_string());
1370 window_state.borrow_mut().ime_state = ImeState::Acted;
1371
1372 let is_composing =
1373 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1374 .flatten()
1375 .is_some();
1376
1377 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1378 with_input_handler(this, |input_handler| {
1379 input_handler.replace_text_in_range(replacement_range, text)
1380 });
1381 } else {
1382 let mut pending_key_down = pending_key_down.unwrap();
1383 pending_key_down.1 = Some(InsertText {
1384 replacement_range,
1385 text: text.to_string(),
1386 });
1387 window_state.borrow_mut().pending_key_down = Some(pending_key_down);
1388 }
1389 }
1390}
1391
1392extern "C" fn set_marked_text(
1393 this: &Object,
1394 _: Sel,
1395 text: id,
1396 selected_range: NSRange,
1397 replacement_range: NSRange,
1398) {
1399 unsafe {
1400 let window_state = get_window_state(this);
1401 window_state.borrow_mut().pending_key_down.take();
1402
1403 let is_attributed_string: BOOL =
1404 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1405 let text: id = if is_attributed_string == YES {
1406 msg_send![text, string]
1407 } else {
1408 text
1409 };
1410 let selected_range = selected_range.to_range();
1411 let replacement_range = replacement_range.to_range();
1412 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1413 .to_str()
1414 .unwrap();
1415
1416 window_state.borrow_mut().ime_state = ImeState::Acted;
1417 window_state.borrow_mut().ime_text = Some(text.to_string());
1418
1419 with_input_handler(this, |input_handler| {
1420 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1421 });
1422 }
1423}
1424
1425extern "C" fn unmark_text(this: &Object, _: Sel) {
1426 unsafe {
1427 let state = get_window_state(this);
1428 let mut borrow = state.borrow_mut();
1429 borrow.ime_state = ImeState::Acted;
1430 borrow.ime_text.take();
1431 }
1432
1433 with_input_handler(this, |input_handler| input_handler.unmark_text());
1434}
1435
1436extern "C" fn attributed_substring_for_proposed_range(
1437 this: &Object,
1438 _: Sel,
1439 range: NSRange,
1440 _actual_range: *mut c_void,
1441) -> id {
1442 with_input_handler(this, |input_handler| {
1443 let range = range.to_range()?;
1444 if range.is_empty() {
1445 return None;
1446 }
1447
1448 let selected_text = input_handler.text_for_range(range)?;
1449 unsafe {
1450 let string: id = msg_send![class!(NSAttributedString), alloc];
1451 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1452 Some(string)
1453 }
1454 })
1455 .flatten()
1456 .unwrap_or(nil)
1457}
1458
1459extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1460 unsafe {
1461 let state = get_window_state(this);
1462 let mut borrow = state.borrow_mut();
1463 borrow.ime_state = ImeState::Continue;
1464 borrow.ime_text.take();
1465 }
1466}
1467
1468extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1469 unsafe {
1470 let state = get_window_state(this);
1471 let mut state_borrow = state.as_ref().borrow_mut();
1472 if let Some(mut callback) = state_borrow.appearance_changed_callback.take() {
1473 drop(state_borrow);
1474 callback();
1475 state.borrow_mut().appearance_changed_callback = Some(callback);
1476 }
1477 }
1478}
1479
1480extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1481 unsafe {
1482 let state = get_window_state(this);
1483 let state_borrow = state.as_ref().borrow();
1484 return if state_borrow.kind == WindowKind::PopUp {
1485 YES
1486 } else {
1487 NO
1488 };
1489 }
1490}
1491
1492async fn synthetic_drag(
1493 window_state: Weak<RefCell<WindowState>>,
1494 drag_id: usize,
1495 event: MouseMovedEvent,
1496) {
1497 loop {
1498 Timer::after(Duration::from_millis(16)).await;
1499 if let Some(window_state) = window_state.upgrade() {
1500 let mut window_state_borrow = window_state.borrow_mut();
1501 if window_state_borrow.synthetic_drag_counter == drag_id {
1502 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1503 drop(window_state_borrow);
1504 callback(Event::MouseMoved(event));
1505 window_state.borrow_mut().event_callback = Some(callback);
1506 }
1507 } else {
1508 break;
1509 }
1510 }
1511 }
1512}
1513
1514fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1515where
1516 F: FnOnce(&mut dyn InputHandler) -> R,
1517{
1518 let window_state = unsafe { get_window_state(window) };
1519 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1520 if let Some(mut input_handler) = window_state_borrow.input_handler.take() {
1521 drop(window_state_borrow);
1522 let result = f(input_handler.as_mut());
1523 window_state.borrow_mut().input_handler = Some(input_handler);
1524 Some(result)
1525 } else {
1526 None
1527 }
1528}