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 main_window_id() -> Option<usize> {
608 unsafe {
609 let app = NSApplication::sharedApplication(nil);
610 let main_window: id = msg_send![app, mainWindow];
611 if msg_send![main_window, isKindOfClass: WINDOW_CLASS] {
612 let id = get_window_state(&*main_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 self.0.borrow().move_traffic_light();
741 }
742 }
743
744 fn set_edited(&mut self, edited: bool) {
745 unsafe {
746 let window = self.0.borrow().native_window;
747 msg_send![window, setDocumentEdited: edited as BOOL]
748 }
749
750 // Changing the document edited state resets the traffic light position,
751 // so we have to move it again.
752 self.0.borrow().move_traffic_light();
753 }
754
755 fn show_character_palette(&self) {
756 unsafe {
757 let app = NSApplication::sharedApplication(nil);
758 let window = self.0.borrow().native_window;
759 let _: () = msg_send![app, orderFrontCharacterPalette: window];
760 }
761 }
762
763 fn minimize(&self) {
764 let window = self.0.borrow().native_window;
765 unsafe {
766 window.miniaturize_(nil);
767 }
768 }
769
770 fn zoom(&self) {
771 let this = self.0.borrow();
772 let window = this.native_window;
773 this.executor
774 .spawn(async move {
775 unsafe {
776 window.zoom_(nil);
777 }
778 })
779 .detach();
780 }
781
782 fn present_scene(&mut self, scene: Scene) {
783 self.0.as_ref().borrow_mut().present_scene(scene);
784 }
785
786 fn toggle_full_screen(&self) {
787 let this = self.0.borrow();
788 let window = this.native_window;
789 this.executor
790 .spawn(async move {
791 unsafe {
792 window.toggleFullScreen_(nil);
793 }
794 })
795 .detach();
796 }
797
798 fn on_event(&mut self, callback: Box<dyn FnMut(Event) -> bool>) {
799 self.0.as_ref().borrow_mut().event_callback = Some(callback);
800 }
801
802 fn on_active_status_change(&mut self, callback: Box<dyn FnMut(bool)>) {
803 self.0.as_ref().borrow_mut().activate_callback = Some(callback);
804 }
805
806 fn on_resize(&mut self, callback: Box<dyn FnMut()>) {
807 self.0.as_ref().borrow_mut().resize_callback = Some(callback);
808 }
809
810 fn on_fullscreen(&mut self, callback: Box<dyn FnMut(bool)>) {
811 self.0.as_ref().borrow_mut().fullscreen_callback = Some(callback);
812 }
813
814 fn on_moved(&mut self, callback: Box<dyn FnMut()>) {
815 self.0.as_ref().borrow_mut().moved_callback = Some(callback);
816 }
817
818 fn on_should_close(&mut self, callback: Box<dyn FnMut() -> bool>) {
819 self.0.as_ref().borrow_mut().should_close_callback = Some(callback);
820 }
821
822 fn on_close(&mut self, callback: Box<dyn FnOnce()>) {
823 self.0.as_ref().borrow_mut().close_callback = Some(callback);
824 }
825
826 fn on_appearance_changed(&mut self, callback: Box<dyn FnMut()>) {
827 self.0.borrow_mut().appearance_changed_callback = Some(callback);
828 }
829
830 fn is_topmost_for_position(&self, position: Vector2F) -> bool {
831 let self_borrow = self.0.borrow();
832 let self_id = self_borrow.id;
833
834 unsafe {
835 let app = NSApplication::sharedApplication(nil);
836
837 // Convert back to screen coordinates
838 let screen_point = position.to_screen_ns_point(
839 self_borrow.native_window,
840 self_borrow.content_size().y() as f64,
841 );
842
843 let window_number: NSInteger = msg_send![class!(NSWindow), windowNumberAtPoint:screen_point belowWindowWithWindowNumber:0];
844 let top_most_window: id = msg_send![app, windowWithWindowNumber: window_number];
845
846 let is_panel: BOOL = msg_send![top_most_window, isKindOfClass: PANEL_CLASS];
847 let is_window: BOOL = msg_send![top_most_window, isKindOfClass: WINDOW_CLASS];
848 if is_panel == YES || is_window == YES {
849 let topmost_window_id = get_window_state(&*top_most_window).borrow().id;
850 topmost_window_id == self_id
851 } else {
852 // Someone else's window is on top
853 false
854 }
855 }
856 }
857}
858
859fn get_scale_factor(native_window: id) -> f32 {
860 unsafe {
861 let screen: id = msg_send![native_window, screen];
862 NSScreen::backingScaleFactor(screen) as f32
863 }
864}
865
866unsafe fn get_window_state(object: &Object) -> Rc<RefCell<WindowState>> {
867 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
868 let rc1 = Rc::from_raw(raw as *mut RefCell<WindowState>);
869 let rc2 = rc1.clone();
870 mem::forget(rc1);
871 rc2
872}
873
874unsafe fn drop_window_state(object: &Object) {
875 let raw: *mut c_void = *object.get_ivar(WINDOW_STATE_IVAR);
876 Rc::from_raw(raw as *mut RefCell<WindowState>);
877}
878
879extern "C" fn yes(_: &Object, _: Sel) -> BOOL {
880 YES
881}
882
883extern "C" fn dealloc_window(this: &Object, _: Sel) {
884 unsafe {
885 drop_window_state(this);
886 let _: () = msg_send![super(this, class!(NSWindow)), dealloc];
887 }
888}
889
890extern "C" fn dealloc_view(this: &Object, _: Sel) {
891 unsafe {
892 drop_window_state(this);
893 let _: () = msg_send![super(this, class!(NSView)), dealloc];
894 }
895}
896
897extern "C" fn handle_key_equivalent(this: &Object, _: Sel, native_event: id) -> BOOL {
898 handle_key_event(this, native_event, true)
899}
900
901extern "C" fn handle_key_down(this: &Object, _: Sel, native_event: id) {
902 handle_key_event(this, native_event, false);
903}
904
905extern "C" fn handle_key_event(this: &Object, native_event: id, key_equivalent: bool) -> BOOL {
906 let window_state = unsafe { get_window_state(this) };
907 let mut window_state_borrow = window_state.as_ref().borrow_mut();
908
909 let window_height = window_state_borrow.content_size().y();
910 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
911
912 if let Some(event) = event {
913 if key_equivalent {
914 window_state_borrow.performed_key_equivalent = true;
915 } else if window_state_borrow.performed_key_equivalent {
916 return NO;
917 }
918
919 let function_is_held;
920 window_state_borrow.pending_key_down = match event {
921 Event::KeyDown(event) => {
922 let keydown = event.keystroke.clone();
923 // Ignore events from held-down keys after some of the initially-pressed keys
924 // were released.
925 if event.is_held {
926 if window_state_borrow.last_fresh_keydown.as_ref() != Some(&keydown) {
927 return YES;
928 }
929 } else {
930 window_state_borrow.last_fresh_keydown = Some(keydown);
931 }
932 function_is_held = event.keystroke.function;
933 Some((event, None))
934 }
935
936 _ => return NO,
937 };
938
939 drop(window_state_borrow);
940
941 if !function_is_held {
942 unsafe {
943 let input_context: id = msg_send![this, inputContext];
944 let _: BOOL = msg_send![input_context, handleEvent: native_event];
945 }
946 }
947
948 let mut handled = false;
949 let mut window_state_borrow = window_state.borrow_mut();
950 let ime_text = window_state_borrow.ime_text.clone();
951 if let Some((event, insert_text)) = window_state_borrow.pending_key_down.take() {
952 let is_held = event.is_held;
953 if let Some(mut callback) = window_state_borrow.event_callback.take() {
954 drop(window_state_borrow);
955
956 let is_composing =
957 with_input_handler(this, |input_handler| input_handler.marked_text_range())
958 .flatten()
959 .is_some();
960 if !is_composing {
961 handled = callback(Event::KeyDown(event));
962 }
963
964 if !handled {
965 if let Some(insert) = insert_text {
966 handled = true;
967 with_input_handler(this, |input_handler| {
968 input_handler
969 .replace_text_in_range(insert.replacement_range, &insert.text)
970 });
971 } else if !is_composing && is_held {
972 if let Some(last_insert_text) = ime_text {
973 //MacOS IME is a bit funky, and even when you've told it there's nothing to
974 //inter it will still swallow certain keys (e.g. 'f', 'j') and not others
975 //(e.g. 'n'). This is a problem for certain kinds of views, like the terminal
976 with_input_handler(this, |input_handler| {
977 if input_handler.selected_text_range().is_none() {
978 handled = true;
979 input_handler.replace_text_in_range(None, &last_insert_text)
980 }
981 });
982 }
983 }
984 }
985
986 window_state.borrow_mut().event_callback = Some(callback);
987 }
988 } else {
989 handled = true;
990 }
991
992 handled as BOOL
993 } else {
994 NO
995 }
996}
997
998extern "C" fn handle_view_event(this: &Object, _: Sel, native_event: id) {
999 let window_state = unsafe { get_window_state(this) };
1000 let weak_window_state = Rc::downgrade(&window_state);
1001 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1002 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1003
1004 let window_height = window_state_borrow.content_size().y();
1005 let event = unsafe { Event::from_native(native_event, Some(window_height)) };
1006 if let Some(event) = event {
1007 match &event {
1008 Event::MouseMoved(
1009 event @ MouseMovedEvent {
1010 pressed_button: Some(_),
1011 ..
1012 },
1013 ) => {
1014 window_state_borrow.synthetic_drag_counter += 1;
1015 window_state_borrow
1016 .executor
1017 .spawn(synthetic_drag(
1018 weak_window_state,
1019 window_state_borrow.synthetic_drag_counter,
1020 *event,
1021 ))
1022 .detach();
1023 }
1024
1025 Event::MouseMoved(_)
1026 if !(is_active || window_state_borrow.kind == WindowKind::PopUp) =>
1027 {
1028 return
1029 }
1030
1031 Event::MouseUp(MouseButtonEvent {
1032 button: MouseButton::Left,
1033 ..
1034 }) => {
1035 window_state_borrow.synthetic_drag_counter += 1;
1036 }
1037
1038 Event::ModifiersChanged(ModifiersChangedEvent { modifiers }) => {
1039 // Only raise modifiers changed event when they have actually changed
1040 if let Some(Event::ModifiersChanged(ModifiersChangedEvent {
1041 modifiers: prev_modifiers,
1042 })) = &window_state_borrow.previous_modifiers_changed_event
1043 {
1044 if prev_modifiers == modifiers {
1045 return;
1046 }
1047 }
1048
1049 window_state_borrow.previous_modifiers_changed_event = Some(event.clone());
1050 }
1051
1052 _ => {}
1053 }
1054
1055 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1056 drop(window_state_borrow);
1057 callback(event);
1058 window_state.borrow_mut().event_callback = Some(callback);
1059 }
1060 }
1061}
1062
1063// Allows us to receive `cmd-.` (the shortcut for closing a dialog)
1064// https://bugs.eclipse.org/bugs/show_bug.cgi?id=300620#c6
1065extern "C" fn cancel_operation(this: &Object, _sel: Sel, _sender: id) {
1066 let window_state = unsafe { get_window_state(this) };
1067 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1068
1069 let keystroke = Keystroke {
1070 cmd: true,
1071 ctrl: false,
1072 alt: false,
1073 shift: false,
1074 function: false,
1075 key: ".".into(),
1076 };
1077 let event = Event::KeyDown(KeyDownEvent {
1078 keystroke: keystroke.clone(),
1079 is_held: false,
1080 });
1081
1082 window_state_borrow.last_fresh_keydown = Some(keystroke);
1083 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1084 drop(window_state_borrow);
1085 callback(event);
1086 window_state.borrow_mut().event_callback = Some(callback);
1087 }
1088}
1089
1090extern "C" fn send_event(this: &Object, _: Sel, native_event: id) {
1091 unsafe {
1092 let _: () = msg_send![super(this, class!(NSWindow)), sendEvent: native_event];
1093 get_window_state(this).borrow_mut().performed_key_equivalent = false;
1094 }
1095}
1096
1097extern "C" fn window_did_resize(this: &Object, _: Sel, _: id) {
1098 let window_state = unsafe { get_window_state(this) };
1099 window_state.as_ref().borrow().move_traffic_light();
1100}
1101
1102extern "C" fn window_will_enter_fullscreen(this: &Object, _: Sel, _: id) {
1103 window_fullscreen_changed(this, true);
1104}
1105
1106extern "C" fn window_will_exit_fullscreen(this: &Object, _: Sel, _: id) {
1107 window_fullscreen_changed(this, false);
1108}
1109
1110fn window_fullscreen_changed(this: &Object, is_fullscreen: bool) {
1111 let window_state = unsafe { get_window_state(this) };
1112 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1113 if let Some(mut callback) = window_state_borrow.fullscreen_callback.take() {
1114 drop(window_state_borrow);
1115 callback(is_fullscreen);
1116 window_state.borrow_mut().fullscreen_callback = Some(callback);
1117 }
1118}
1119
1120extern "C" fn window_did_move(this: &Object, _: Sel, _: id) {
1121 let window_state = unsafe { get_window_state(this) };
1122 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1123 if let Some(mut callback) = window_state_borrow.moved_callback.take() {
1124 drop(window_state_borrow);
1125 callback();
1126 window_state.borrow_mut().moved_callback = Some(callback);
1127 }
1128}
1129
1130extern "C" fn window_did_change_key_status(this: &Object, selector: Sel, _: id) {
1131 let window_state = unsafe { get_window_state(this) };
1132 let window_state_borrow = window_state.borrow();
1133 let is_active = unsafe { window_state_borrow.native_window.isKeyWindow() == YES };
1134
1135 // When opening a pop-up while the application isn't active, Cocoa sends a spurious
1136 // `windowDidBecomeKey` message to the previous key window even though that window
1137 // isn't actually key. This causes a bug if the application is later activated while
1138 // the pop-up is still open, making it impossible to activate the previous key window
1139 // even if the pop-up gets closed. The only way to activate it again is to de-activate
1140 // the app and re-activate it, which is a pretty bad UX.
1141 // The following code detects the spurious event and invokes `resignKeyWindow`:
1142 // in theory, we're not supposed to invoke this method manually but it balances out
1143 // the spurious `becomeKeyWindow` event and helps us work around that bug.
1144 if selector == sel!(windowDidBecomeKey:) {
1145 if !is_active {
1146 unsafe {
1147 let _: () = msg_send![window_state_borrow.native_window, resignKeyWindow];
1148 return;
1149 }
1150 }
1151 }
1152
1153 let executor = window_state_borrow.executor.clone();
1154 drop(window_state_borrow);
1155 executor
1156 .spawn(async move {
1157 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1158 if let Some(mut callback) = window_state_borrow.activate_callback.take() {
1159 drop(window_state_borrow);
1160 callback(is_active);
1161 window_state.borrow_mut().activate_callback = Some(callback);
1162 };
1163 })
1164 .detach();
1165}
1166
1167extern "C" fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
1168 let window_state = unsafe { get_window_state(this) };
1169 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1170 if let Some(mut callback) = window_state_borrow.should_close_callback.take() {
1171 drop(window_state_borrow);
1172 let should_close = callback();
1173 window_state.borrow_mut().should_close_callback = Some(callback);
1174 should_close as BOOL
1175 } else {
1176 YES
1177 }
1178}
1179
1180extern "C" fn close_window(this: &Object, _: Sel) {
1181 unsafe {
1182 let close_callback = {
1183 let window_state = get_window_state(this);
1184 window_state
1185 .as_ref()
1186 .try_borrow_mut()
1187 .ok()
1188 .and_then(|mut window_state| window_state.close_callback.take())
1189 };
1190
1191 if let Some(callback) = close_callback {
1192 callback();
1193 }
1194
1195 let _: () = msg_send![super(this, class!(NSWindow)), close];
1196 }
1197}
1198
1199extern "C" fn make_backing_layer(this: &Object, _: Sel) -> id {
1200 let window_state = unsafe { get_window_state(this) };
1201 let window_state = window_state.as_ref().borrow();
1202 window_state.renderer.layer().as_ptr() as id
1203}
1204
1205extern "C" fn view_did_change_backing_properties(this: &Object, _: Sel) {
1206 let window_state = unsafe { get_window_state(this) };
1207 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1208
1209 unsafe {
1210 let scale_factor = window_state_borrow.scale_factor() as f64;
1211 let size = window_state_borrow.content_size();
1212 let drawable_size: NSSize = NSSize {
1213 width: size.x() as f64 * scale_factor,
1214 height: size.y() as f64 * scale_factor,
1215 };
1216
1217 let _: () = msg_send![
1218 window_state_borrow.renderer.layer(),
1219 setContentsScale: scale_factor
1220 ];
1221 let _: () = msg_send![
1222 window_state_borrow.renderer.layer(),
1223 setDrawableSize: drawable_size
1224 ];
1225 }
1226
1227 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1228 drop(window_state_borrow);
1229 callback();
1230 window_state.as_ref().borrow_mut().resize_callback = Some(callback);
1231 };
1232}
1233
1234extern "C" fn set_frame_size(this: &Object, _: Sel, size: NSSize) {
1235 let window_state = unsafe { get_window_state(this) };
1236 let window_state_borrow = window_state.as_ref().borrow();
1237
1238 if window_state_borrow.content_size() == vec2f(size.width as f32, size.height as f32) {
1239 return;
1240 }
1241
1242 unsafe {
1243 let _: () = msg_send![super(this, class!(NSView)), setFrameSize: size];
1244 }
1245
1246 let scale_factor = window_state_borrow.scale_factor() as f64;
1247 let drawable_size: NSSize = NSSize {
1248 width: size.width * scale_factor,
1249 height: size.height * scale_factor,
1250 };
1251
1252 unsafe {
1253 let _: () = msg_send![
1254 window_state_borrow.renderer.layer(),
1255 setDrawableSize: drawable_size
1256 ];
1257 }
1258
1259 drop(window_state_borrow);
1260 let mut window_state_borrow = window_state.borrow_mut();
1261 if let Some(mut callback) = window_state_borrow.resize_callback.take() {
1262 drop(window_state_borrow);
1263 callback();
1264 window_state.borrow_mut().resize_callback = Some(callback);
1265 };
1266}
1267
1268extern "C" fn display_layer(this: &Object, _: Sel, _: id) {
1269 unsafe {
1270 let window_state = get_window_state(this);
1271 let mut window_state = window_state.as_ref().borrow_mut();
1272 if let Some(scene) = window_state.scene_to_render.take() {
1273 window_state.renderer.render(&scene);
1274 };
1275 }
1276}
1277
1278extern "C" fn valid_attributes_for_marked_text(_: &Object, _: Sel) -> id {
1279 unsafe { msg_send![class!(NSArray), array] }
1280}
1281
1282extern "C" fn has_marked_text(this: &Object, _: Sel) -> BOOL {
1283 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1284 .flatten()
1285 .is_some() as BOOL
1286}
1287
1288extern "C" fn marked_range(this: &Object, _: Sel) -> NSRange {
1289 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1290 .flatten()
1291 .map_or(NSRange::invalid(), |range| range.into())
1292}
1293
1294extern "C" fn selected_range(this: &Object, _: Sel) -> NSRange {
1295 with_input_handler(this, |input_handler| input_handler.selected_text_range())
1296 .flatten()
1297 .map_or(NSRange::invalid(), |range| range.into())
1298}
1299
1300extern "C" fn first_rect_for_character_range(
1301 this: &Object,
1302 _: Sel,
1303 range: NSRange,
1304 _: id,
1305) -> NSRect {
1306 let frame = unsafe {
1307 let window = get_window_state(this).borrow().native_window;
1308 NSView::frame(window)
1309 };
1310 with_input_handler(this, |input_handler| {
1311 input_handler.rect_for_range(range.to_range()?)
1312 })
1313 .flatten()
1314 .map_or(
1315 NSRect::new(NSPoint::new(0., 0.), NSSize::new(0., 0.)),
1316 |rect| {
1317 NSRect::new(
1318 NSPoint::new(
1319 frame.origin.x + rect.origin_x() as f64,
1320 frame.origin.y + frame.size.height - rect.origin_y() as f64,
1321 ),
1322 NSSize::new(rect.width() as f64, rect.height() as f64),
1323 )
1324 },
1325 )
1326}
1327
1328extern "C" fn insert_text(this: &Object, _: Sel, text: id, replacement_range: NSRange) {
1329 unsafe {
1330 let window_state = get_window_state(this);
1331 let mut window_state_borrow = window_state.borrow_mut();
1332 let pending_key_down = window_state_borrow.pending_key_down.take();
1333 drop(window_state_borrow);
1334
1335 let is_attributed_string: BOOL =
1336 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1337 let text: id = if is_attributed_string == YES {
1338 msg_send![text, string]
1339 } else {
1340 text
1341 };
1342 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1343 .to_str()
1344 .unwrap();
1345 let replacement_range = replacement_range.to_range();
1346
1347 window_state.borrow_mut().ime_text = Some(text.to_string());
1348 window_state.borrow_mut().ime_state = ImeState::Acted;
1349
1350 let is_composing =
1351 with_input_handler(this, |input_handler| input_handler.marked_text_range())
1352 .flatten()
1353 .is_some();
1354
1355 if is_composing || text.chars().count() > 1 || pending_key_down.is_none() {
1356 with_input_handler(this, |input_handler| {
1357 input_handler.replace_text_in_range(replacement_range, text)
1358 });
1359 } else {
1360 let mut pending_key_down = pending_key_down.unwrap();
1361 pending_key_down.1 = Some(InsertText {
1362 replacement_range,
1363 text: text.to_string(),
1364 });
1365 window_state.borrow_mut().pending_key_down = Some(pending_key_down);
1366 }
1367 }
1368}
1369
1370extern "C" fn set_marked_text(
1371 this: &Object,
1372 _: Sel,
1373 text: id,
1374 selected_range: NSRange,
1375 replacement_range: NSRange,
1376) {
1377 unsafe {
1378 let window_state = get_window_state(this);
1379 window_state.borrow_mut().pending_key_down.take();
1380
1381 let is_attributed_string: BOOL =
1382 msg_send![text, isKindOfClass: [class!(NSAttributedString)]];
1383 let text: id = if is_attributed_string == YES {
1384 msg_send![text, string]
1385 } else {
1386 text
1387 };
1388 let selected_range = selected_range.to_range();
1389 let replacement_range = replacement_range.to_range();
1390 let text = CStr::from_ptr(text.UTF8String() as *mut c_char)
1391 .to_str()
1392 .unwrap();
1393
1394 window_state.borrow_mut().ime_state = ImeState::Acted;
1395 window_state.borrow_mut().ime_text = Some(text.to_string());
1396
1397 with_input_handler(this, |input_handler| {
1398 input_handler.replace_and_mark_text_in_range(replacement_range, text, selected_range);
1399 });
1400 }
1401}
1402
1403extern "C" fn unmark_text(this: &Object, _: Sel) {
1404 unsafe {
1405 let state = get_window_state(this);
1406 let mut borrow = state.borrow_mut();
1407 borrow.ime_state = ImeState::Acted;
1408 borrow.ime_text.take();
1409 }
1410
1411 with_input_handler(this, |input_handler| input_handler.unmark_text());
1412}
1413
1414extern "C" fn attributed_substring_for_proposed_range(
1415 this: &Object,
1416 _: Sel,
1417 range: NSRange,
1418 _actual_range: *mut c_void,
1419) -> id {
1420 with_input_handler(this, |input_handler| {
1421 let range = range.to_range()?;
1422 if range.is_empty() {
1423 return None;
1424 }
1425
1426 let selected_text = input_handler.text_for_range(range)?;
1427 unsafe {
1428 let string: id = msg_send![class!(NSAttributedString), alloc];
1429 let string: id = msg_send![string, initWithString: ns_string(&selected_text)];
1430 Some(string)
1431 }
1432 })
1433 .flatten()
1434 .unwrap_or(nil)
1435}
1436
1437extern "C" fn do_command_by_selector(this: &Object, _: Sel, _: Sel) {
1438 unsafe {
1439 let state = get_window_state(this);
1440 let mut borrow = state.borrow_mut();
1441 borrow.ime_state = ImeState::Continue;
1442 borrow.ime_text.take();
1443 }
1444}
1445
1446extern "C" fn view_did_change_effective_appearance(this: &Object, _: Sel) {
1447 unsafe {
1448 let state = get_window_state(this);
1449 let mut state_borrow = state.as_ref().borrow_mut();
1450 if let Some(mut callback) = state_borrow.appearance_changed_callback.take() {
1451 drop(state_borrow);
1452 callback();
1453 state.borrow_mut().appearance_changed_callback = Some(callback);
1454 }
1455 }
1456}
1457
1458extern "C" fn accepts_first_mouse(this: &Object, _: Sel, _: id) -> BOOL {
1459 unsafe {
1460 let state = get_window_state(this);
1461 let state_borrow = state.as_ref().borrow();
1462 return if state_borrow.kind == WindowKind::PopUp {
1463 YES
1464 } else {
1465 NO
1466 };
1467 }
1468}
1469
1470async fn synthetic_drag(
1471 window_state: Weak<RefCell<WindowState>>,
1472 drag_id: usize,
1473 event: MouseMovedEvent,
1474) {
1475 loop {
1476 Timer::after(Duration::from_millis(16)).await;
1477 if let Some(window_state) = window_state.upgrade() {
1478 let mut window_state_borrow = window_state.borrow_mut();
1479 if window_state_borrow.synthetic_drag_counter == drag_id {
1480 if let Some(mut callback) = window_state_borrow.event_callback.take() {
1481 drop(window_state_borrow);
1482 callback(Event::MouseMoved(event));
1483 window_state.borrow_mut().event_callback = Some(callback);
1484 }
1485 } else {
1486 break;
1487 }
1488 }
1489 }
1490}
1491
1492fn with_input_handler<F, R>(window: &Object, f: F) -> Option<R>
1493where
1494 F: FnOnce(&mut dyn InputHandler) -> R,
1495{
1496 let window_state = unsafe { get_window_state(window) };
1497 let mut window_state_borrow = window_state.as_ref().borrow_mut();
1498 if let Some(mut input_handler) = window_state_borrow.input_handler.take() {
1499 drop(window_state_borrow);
1500 let result = f(input_handler.as_mut());
1501 window_state.borrow_mut().input_handler = Some(input_handler);
1502 Some(result)
1503 } else {
1504 None
1505 }
1506}