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Diffstat (limited to 'toolkit/crashreporter/client/app/src/ui/macos/mod.rs')
| -rw-r--r-- | toolkit/crashreporter/client/app/src/ui/macos/mod.rs | 1122 |
1 files changed, 1122 insertions, 0 deletions
diff --git a/toolkit/crashreporter/client/app/src/ui/macos/mod.rs b/toolkit/crashreporter/client/app/src/ui/macos/mod.rs new file mode 100644 index 0000000000..6520d16472 --- /dev/null +++ b/toolkit/crashreporter/client/app/src/ui/macos/mod.rs @@ -0,0 +1,1122 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +//! A UI using the macos cocoa API. +//! +//! This UI contains some edge cases that aren't implemented, for instance: +//! * there are a few cases where specific hierarchies are handled differently (e.g. a Button +//! containing Label), etc. +//! * not all controls handle all Property variants (e.g. Checkbox doesn't handle ReadOnly, Text +//! doesn't handle Binding, etc). +//! +//! The rendering ignores `ElementStyle::margin` entirely, because +//! * `NSView` doesn't support margins (so working them into constraints would be a bit annoying), +//! and +//! * `NSView.layoutMarginsGuide` results in a layout almost identical to what the margins (at the +//! time of this writing) in the UI layouts are achieving. +//! +//! In a few cases, init or creation functions are called which _could_ return nil and are wrapped +//! in their type wrapper (as those functions return `instancetype`/`id`). We consider this safe +//! enough because it won't cause unsoundness (they are only passed to objc functions which can +//! take nil arguments) and the failure case is very unlikely. + +#![allow(non_upper_case_globals)] + +use self::objc::*; +use super::model::{self, Alignment, Application, Element, TypedElement}; +use crate::data::Property; +use cocoa::{ + INSApplication, INSBox, INSButton, INSColor, INSControl, INSFont, INSLayoutAnchor, + INSLayoutConstraint, INSLayoutDimension, INSLayoutGuide, INSMenu, INSMenuItem, + INSMutableParagraphStyle, INSObject, INSProcessInfo, INSProgressIndicator, INSRunLoop, + INSScrollView, INSStackView, INSText, INSTextContainer, INSTextField, INSTextView, INSView, + INSWindow, NSArray_NSArrayCreation, NSAttributedString_NSExtendedAttributedString, + NSDictionary_NSDictionaryCreation, NSRunLoop_NSRunLoopConveniences, + NSStackView_NSStackViewGravityAreas, NSString_NSStringExtensionMethods, + NSTextField_NSTextFieldConvenience, NSView_NSConstraintBasedLayoutInstallingConstraints, + NSView_NSConstraintBasedLayoutLayering, NSView_NSSafeAreas, PNSObject, +}; +use once_cell::sync::Lazy; + +/// https://developer.apple.com/documentation/foundation/1497293-string_encodings/nsutf8stringencoding?language=objc +const NSUTF8StringEncoding: cocoa::NSStringEncoding = 4; + +/// Constant from NSCell.h +const NSControlStateValueOn: cocoa::NSControlStateValue = 1; + +/// Constant from NSLayoutConstraint.h +const NSLayoutPriorityDefaultHigh: cocoa::NSLayoutPriority = 750.0; + +mod objc; + +/// A MacOS Cocoa UI implementation. +#[derive(Default)] +pub struct UI; + +impl UI { + pub fn run_loop(&self, app: Application) { + let nsapp = unsafe { cocoa::NSApplication::sharedApplication() }; + + Objc::<AppDelegate>::register(); + Objc::<Button>::register(); + Objc::<Checkbox>::register(); + Objc::<TextView>::register(); + Objc::<Window>::register(); + + rc::autoreleasepool(|| { + let delegate = AppDelegate::new(app).into_object(); + // Set delegate + unsafe { nsapp.setDelegate_(delegate.instance as *mut _) }; + + // Set up the main menu + unsafe { + let appname = read_nsstring(cocoa::NSProcessInfo::processInfo().processName()); + let mainmenu = StrongRef::new(cocoa::NSMenu::alloc()); + mainmenu.init(); + + { + // We don't need a title for the app menu item nor menu; it will always come from + // the process name regardless of what we set. + let appmenuitem = StrongRef::new(cocoa::NSMenuItem::alloc()).autorelease(); + appmenuitem.init(); + mainmenu.addItem_(appmenuitem); + + let appmenu = StrongRef::new(cocoa::NSMenu::alloc()); + appmenu.init(); + + { + let quit = StrongRef::new(cocoa::NSMenuItem::alloc()); + quit.initWithTitle_action_keyEquivalent_( + nsstring(&format!("Quit {appname}")), + sel!(terminate:), + nsstring("q"), + ); + appmenu.addItem_(quit.autorelease()); + } + appmenuitem.setSubmenu_(appmenu.autorelease()); + } + { + let editmenuitem = StrongRef::new(cocoa::NSMenuItem::alloc()).autorelease(); + editmenuitem.initWithTitle_action_keyEquivalent_( + nsstring("Edit"), + runtime::Sel::from_ptr(std::ptr::null()), + nsstring(""), + ); + mainmenu.addItem_(editmenuitem); + + let editmenu = StrongRef::new(cocoa::NSMenu::alloc()); + editmenu.initWithTitle_(nsstring("Edit")); + + let add_item = |name, selector, shortcut| { + let item = StrongRef::new(cocoa::NSMenuItem::alloc()); + item.initWithTitle_action_keyEquivalent_( + nsstring(name), + selector, + nsstring(shortcut), + ); + editmenu.addItem_(item.autorelease()); + }; + + add_item("Undo", sel!(undo:), "z"); + add_item("Redo", sel!(redo:), "Z"); + editmenu.addItem_(cocoa::NSMenuItem::separatorItem()); + add_item("Cut", sel!(cut:), "x"); + add_item("Copy", sel!(copy:), "c"); + add_item("Paste", sel!(paste:), "v"); + add_item("Delete", sel!(delete:), ""); + add_item("Select All", sel!(selectAll:), "a"); + + editmenuitem.setSubmenu_(editmenu.autorelease()); + } + + nsapp.setMainMenu_(mainmenu.autorelease()); + } + + // Run the main application loop + unsafe { nsapp.run() }; + }); + } + + pub fn invoke(&self, f: model::InvokeFn) { + // Blocks only take `Fn`, so we have to wrap the boxed function. + let f = std::cell::RefCell::new(Some(f)); + enqueue(move || { + if let Some(f) = f.borrow_mut().take() { + f(); + } + }); + } +} + +fn enqueue<F: Fn() + 'static>(f: F) { + let block = block::ConcreteBlock::new(f); + // The block must be an RcBlock so addOperationWithBlock can retain it. + // https://docs.rs/block/latest/block/#creating-blocks + let block = block.copy(); + + // We need to explicitly signal that the enqueued blocks can run in both the default mode (the + // main loop) and modal mode, otherwise when modal windows are opened things get stuck. + struct RunloopModes(cocoa::NSArray); + + impl RunloopModes { + pub fn new() -> Self { + unsafe { + let objects: [cocoa::id; 2] = [ + cocoa::NSDefaultRunLoopMode.0, + cocoa::NSModalPanelRunLoopMode.0, + ]; + RunloopModes( + cocoa::NSArray(<cocoa::NSArray as NSArray_NSArrayCreation< + cocoa::NSRunLoopMode, + >>::arrayWithObjects_count_( + objects.as_slice().as_ptr() as *const *mut u64, + objects + .as_slice() + .len() + .try_into() + .expect("usize can't fit in u64"), + )), + ) + } + } + } + + // # Safety + // The array is static and cannot be changed. + unsafe impl Sync for RunloopModes {} + unsafe impl Send for RunloopModes {} + + static RUNLOOP_MODES: Lazy<RunloopModes> = Lazy::new(RunloopModes::new); + + unsafe { + cocoa::NSRunLoop::mainRunLoop().performInModes_block_(RUNLOOP_MODES.0, &*block); + } +} + +#[repr(transparent)] +struct Rect(pub cocoa::NSRect); + +unsafe impl Encode for Rect { + fn encode() -> Encoding { + unsafe { Encoding::from_str("{CGRect={CGPoint=dd}{CGSize=dd}}") } + } +} + +/// Create an NSString by copying a str. +fn nsstring(v: &str) -> cocoa::NSString { + unsafe { + StrongRef::new(cocoa::NSString( + cocoa::NSString::alloc().initWithBytes_length_encoding_( + v.as_ptr() as *const _, + v.len().try_into().expect("usize can't fit in u64"), + NSUTF8StringEncoding, + ), + )) + } + .autorelease() +} + +/// Create a String by copying an NSString +fn read_nsstring(s: cocoa::NSString) -> String { + let c_str = unsafe { std::ffi::CStr::from_ptr(s.UTF8String()) }; + c_str.to_str().expect("NSString isn't UTF8").to_owned() +} + +fn nsrect<X: Into<f64>, Y: Into<f64>, W: Into<f64>, H: Into<f64>>( + x: X, + y: Y, + w: W, + h: H, +) -> cocoa::NSRect { + cocoa::NSRect { + origin: cocoa::NSPoint { + x: x.into(), + y: y.into(), + }, + size: cocoa::NSSize { + width: w.into(), + height: h.into(), + }, + } +} + +struct AppDelegate { + app: Option<Application>, + windows: Vec<StrongRef<cocoa::NSWindow>>, +} + +impl AppDelegate { + pub fn new(app: Application) -> Self { + AppDelegate { + app: Some(app), + windows: Default::default(), + } + } +} + +objc_class! { + impl AppDelegate: NSObject /*<NSApplicationDelegate>*/ { + #[sel(applicationDidFinishLaunching:)] + fn application_did_finish_launching(&mut self, _notification: Ptr<cocoa::NSNotification>) { + // Activate the application (bringing windows to the active foreground later) + unsafe { cocoa::NSApplication::sharedApplication().activateIgnoringOtherApps_(runtime::YES) }; + + let mut first = true; + let mut windows = WindowRenderer::default(); + let app = self.app.take().unwrap(); + windows.rtl = app.rtl; + for window in app.windows { + let w = windows.render(window); + unsafe { + if first { + w.makeKeyAndOrderFront_(self.instance); + w.makeMainWindow(); + first = false; + } + } + } + self.windows = windows.unwrap(); + + } + + #[sel(applicationShouldTerminateAfterLastWindowClosed:)] + fn application_should_terminate_after_window_closed(&mut self, _app: Ptr<cocoa::NSApplication>) -> runtime::BOOL { + runtime::YES + } + } +} + +struct Window { + modal: bool, + title: String, + style: model::ElementStyle, +} + +objc_class! { + impl Window: NSWindow /*<NSWindowDelegate>*/ { + #[sel(init)] + fn init(&mut self) -> cocoa::id { + let style = &self.style; + let title = &self.title; + let w = cocoa::NSWindow(self.instance); + + unsafe { + if w.initWithContentRect_styleMask_backing_defer_( + nsrect( + 0, + 0, + style.horizontal_size_request.unwrap_or(800), + style.vertical_size_request.unwrap_or(500), + ), + cocoa::NSWindowStyleMaskTitled + | cocoa::NSWindowStyleMaskClosable + | cocoa::NSWindowStyleMaskResizable + | cocoa::NSWindowStyleMaskMiniaturizable, + cocoa::NSBackingStoreBuffered, + runtime::NO, + ).is_null() { + return std::ptr::null_mut(); + } + + w.setDelegate_(self.instance as _); + w.setMinSize_(cocoa::NSSize { + width: style.horizontal_size_request.unwrap_or(0) as f64, + height: style.vertical_size_request.unwrap_or(0) as f64, + }); + + if !title.is_empty() { + w.setTitle_(nsstring(title.as_str())); + } + } + + self.instance + } + + #[sel(windowWillClose:)] + fn window_will_close(&mut self, _notification: Ptr<cocoa::NSNotification>) { + if self.modal { + unsafe { + let nsapp = cocoa::NSApplication::sharedApplication(); + nsapp.stopModal(); + } + } + } + } +} + +impl From<Objc<Window>> for cocoa::NSWindow { + fn from(ptr: Objc<Window>) -> Self { + cocoa::NSWindow(ptr.instance) + } +} + +struct Button { + element: model::Button, +} + +impl Button { + pub fn with_title(self, title: &str) -> cocoa::NSButton { + let obj = self.into_object(); + unsafe { + let () = msg_send![obj.instance, setTitle: nsstring(title)]; + } + // # Safety + // NSButton is the superclass of Objc<Button>. + unsafe { std::mem::transmute(obj.autorelease()) } + } +} + +objc_class! { + impl Button: NSButton { + #[sel(initWithFrame:)] + fn init_with_frame(&mut self, frame_rect: Rect) -> cocoa::id { + unsafe { + let object: cocoa::id = msg_send![super(self.instance, class!(NSButton)), initWithFrame: frame_rect.0]; + if object.is_null() { + return object; + } + let () = msg_send![object, setBezelStyle: cocoa::NSBezelStyleRounded]; + let () = msg_send![object, setAction: sel!(didClick)]; + let () = msg_send![object, setTarget: object]; + object + } + } + + #[sel(didClick)] + fn did_click(&mut self) { + self.element.click.fire(&()); + } + } +} + +struct Checkbox { + element: model::Checkbox, +} + +objc_class! { + impl Checkbox: NSButton { + #[sel(initWithFrame:)] + fn init_with_frame(&mut self, frame_rect: Rect) -> cocoa::id { + unsafe { + let object: cocoa::id = msg_send![super(self.instance, class!(NSButton)), initWithFrame: frame_rect.0]; + if object.is_null() { + return object; + } + let () = msg_send![object, setButtonType: cocoa::NSButtonTypeSwitch]; + if let Some(label) = &self.element.label { + let () = msg_send![object, setTitle: nsstring(label.as_str())]; + } + let () = msg_send![object, setAction: sel!(didClick:)]; + let () = msg_send![object, setTarget: object]; + + match &self.element.checked { + Property::Binding(s) => { + if *s.borrow() { + let () = msg_send![object, setState: NSControlStateValueOn]; + } + } + Property::ReadOnly(_) => (), + Property::Static(_) => (), + } + + object + } + } + + #[sel(didClick:)] + fn did_click(&mut self, button: Objc<Checkbox>) { + match &self.element.checked { + Property::Binding(s) => { + let state = unsafe { std::mem::transmute::<_, cocoa::NSButton>(button).state() }; + *s.borrow_mut() = state == NSControlStateValueOn; + } + Property::ReadOnly(_) => (), + Property::Static(_) => (), + } + } + } +} + +impl Checkbox { + pub fn into_button(self) -> cocoa::NSButton { + let obj = self.into_object(); + // # Safety + // NSButton is the superclass of Objc<Checkbox>. + unsafe { std::mem::transmute(obj.autorelease()) } + } +} + +struct TextView; + +objc_class! { + impl TextView: NSTextView /*<NSTextViewDelegate>*/ { + #[sel(initWithFrame:)] + fn init_with_frame(&mut self, frame_rect: Rect) -> cocoa::id { + unsafe { + let object: cocoa::id = msg_send![super(self.instance, class!(NSTextView)), initWithFrame: frame_rect.0]; + if object.is_null() { + return object; + } + let () = msg_send![object, setDelegate: self.instance]; + object + } + } + + #[sel(textView:doCommandBySelector:)] + fn do_command_by_selector(&mut self, text_view: Ptr<cocoa::NSTextView>, selector: runtime::Sel) -> runtime::BOOL { + let Ptr(text_view) = text_view; + // Make Tab/Backtab navigate to key views rather than inserting tabs in the text view. + // We can't use the `NSText` `fieldEditor` property to implement this behavior because + // that will disable the Enter key. + if selector == sel!(insertTab:) { + unsafe { text_view.window().selectNextKeyView_(text_view.0) }; + return runtime::YES; + } else if selector == sel!(insertBacktab:) { + unsafe { text_view.window().selectPreviousKeyView_(text_view.0) }; + return runtime::YES; + } + runtime::NO + } + } +} + +impl From<Objc<TextView>> for cocoa::NSTextView { + fn from(tv: Objc<TextView>) -> Self { + // # Safety + // NSTextView is the superclass of Objc<TextView>. + unsafe { std::mem::transmute(tv) } + } +} + +// For some reason the bindgen code for the nslayoutanchor subclasses doesn't have +// `Into<NSLayoutAnchor>`, so we add our own. +trait IntoNSLayoutAnchor { + fn into_layout_anchor(self) -> cocoa::NSLayoutAnchor; +} + +impl IntoNSLayoutAnchor for cocoa::NSLayoutXAxisAnchor { + fn into_layout_anchor(self) -> cocoa::NSLayoutAnchor { + // # Safety + // NSLayoutXAxisAnchor is a subclass of NSLayoutAnchor + cocoa::NSLayoutAnchor(self.0) + } +} + +impl IntoNSLayoutAnchor for cocoa::NSLayoutYAxisAnchor { + fn into_layout_anchor(self) -> cocoa::NSLayoutAnchor { + // # Safety + // NSLayoutYAxisAnchor is a subclass of NSLayoutAnchor + cocoa::NSLayoutAnchor(self.0) + } +} + +unsafe fn constraint_equal<T, O>(anchor: T, to: O) +where + T: INSLayoutAnchor<()> + std::ops::Deref, + T::Target: Message + Sized, + O: IntoNSLayoutAnchor, +{ + anchor + .constraintEqualToAnchor_(to.into_layout_anchor()) + .setActive_(runtime::YES); +} + +#[derive(Default)] +struct WindowRenderer { + windows_to_retain: Vec<StrongRef<cocoa::NSWindow>>, + rtl: bool, +} + +impl WindowRenderer { + pub fn unwrap(self) -> Vec<StrongRef<cocoa::NSWindow>> { + self.windows_to_retain + } + + pub fn render(&mut self, window: TypedElement<model::Window>) -> StrongRef<cocoa::NSWindow> { + let style = window.style; + let model::Window { + close, + children, + content, + modal, + title, + } = window.element_type; + + let w = Window { + modal, + title, + style, + } + .into_object(); + + let nswindow: StrongRef<cocoa::NSWindow> = w.clone().cast(); + + unsafe { + // Don't release windows when closed: we retain windows at the top-level. + nswindow.setReleasedWhenClosed_(runtime::NO); + + if let Some(close) = close { + let nswindow = nswindow.weak(); + close.subscribe(move |&()| { + if let Some(nswindow) = nswindow.lock() { + nswindow.close(); + } + }); + } + + if let Some(e) = content { + // Use an NSBox as a container view so that the window's content can easily have + // constraints set up relative to the parent (they can't be set relative to the + // window). + let content_parent: StrongRef<cocoa::NSBox> = msg_send![class!(NSBox), new]; + content_parent.setTitlePosition_(cocoa::NSNoTitle); + content_parent.setTransparent_(runtime::YES); + content_parent.setContentViewMargins_(cocoa::NSSize { + width: 5.0, + height: 5.0, + }); + if ViewRenderer::new_with_selector(self.rtl, *content_parent, sel!(setContentView:)) + .render(*e) + { + nswindow.setContentView_((*content_parent).into()); + } + } + + for child in children { + let modal = child.element_type.modal; + let visible = child.style.visible.clone(); + let child_window = self.render(child); + + #[derive(Clone, Copy)] + struct ShowChild { + modal: bool, + } + + impl ShowChild { + pub fn show(&self, parent: cocoa::NSWindow, child: cocoa::NSWindow) { + unsafe { + parent.addChildWindow_ordered_(child, cocoa::NSWindowAbove); + child.makeKeyAndOrderFront_(parent.0); + if self.modal { + // Run the modal from the main nsapp.run() loop to prevent binding + // updates from being nested (as this will block until the modal is + // stopped). + enqueue(move || { + let nsapp = cocoa::NSApplication::sharedApplication(); + nsapp.runModalForWindow_(child); + }); + } + } + } + } + + let show_child = ShowChild { modal }; + + match visible { + Property::Static(visible) => { + if visible { + show_child.show(*nswindow, *child_window); + } + } + Property::Binding(b) => { + let child = child_window.weak(); + let parent = nswindow.weak(); + b.on_change(move |visible| { + let Some((w, child_window)) = parent.lock().zip(child.lock()) else { + return; + }; + if *visible { + show_child.show(*w, *child_window); + } else { + child_window.close(); + } + }); + if *b.borrow() { + show_child.show(*nswindow, *child_window); + } + } + Property::ReadOnly(_) => panic!("window visibility cannot be ReadOnly"), + } + } + } + self.windows_to_retain.push(nswindow.clone()); + nswindow + } +} + +struct ViewRenderer { + parent: cocoa::NSView, + add_subview: Box<dyn Fn(cocoa::NSView, &model::ElementStyle, cocoa::NSView)>, + ignore_vertical: bool, + ignore_horizontal: bool, + rtl: bool, +} + +impl ViewRenderer { + /// add_subview should add the rendered child view. + pub fn new<F>(rtl: bool, parent: impl Into<cocoa::NSView>, add_subview: F) -> Self + where + F: Fn(cocoa::NSView, &model::ElementStyle, cocoa::NSView) + 'static, + { + ViewRenderer { + parent: parent.into(), + add_subview: Box::new(add_subview), + ignore_vertical: false, + ignore_horizontal: false, + rtl, + } + } + + /// add_subview should be the selector to call on the parent view to add the rendered child view. + pub fn new_with_selector( + rtl: bool, + parent: impl Into<cocoa::NSView>, + add_subview: runtime::Sel, + ) -> Self { + Self::new(rtl, parent, move |parent, _style, child| { + let () = unsafe { (*parent.0).send_message(add_subview, (child,)) }.unwrap(); + }) + } + + /// Ignore vertical layout settings when rendering views. + pub fn ignore_vertical(mut self, setting: bool) -> Self { + self.ignore_vertical = setting; + self + } + + /// Ignore horizontal layout settings when rendering views. + pub fn ignore_horizontal(mut self, setting: bool) -> Self { + self.ignore_horizontal = setting; + self + } + + /// Render the given element. + /// + /// Returns whether the element was rendered. + pub fn render( + &self, + Element { + style, + element_type, + }: Element, + ) -> bool { + let Some(view) = render_element(element_type, &style, self.rtl) else { + return false; + }; + + (self.add_subview)(self.parent, &style, view); + + // Setting the content hugging priority to a high value causes stackviews to not stretch + // subviews during autolayout. + unsafe { + view.setContentHuggingPriority_forOrientation_( + NSLayoutPriorityDefaultHigh, + cocoa::NSLayoutConstraintOrientationHorizontal, + ); + view.setContentHuggingPriority_forOrientation_( + NSLayoutPriorityDefaultHigh, + cocoa::NSLayoutConstraintOrientationVertical, + ); + } + + // Set layout and writing direction based on RTL. + unsafe { + view.setUserInterfaceLayoutDirection_(if self.rtl { + cocoa::NSUserInterfaceLayoutDirectionRightToLeft + } else { + cocoa::NSUserInterfaceLayoutDirectionLeftToRight + }); + if let Ok(control) = cocoa::NSControl::try_from(view) { + control.setBaseWritingDirection_(if self.rtl { + cocoa::NSWritingDirectionRightToLeft + } else { + cocoa::NSWritingDirectionLeftToRight + }); + } + } + + let lmg = unsafe { self.parent.layoutMarginsGuide() }; + + if !matches!(style.horizontal_alignment, Alignment::Fill) { + if let Some(size) = style.horizontal_size_request { + unsafe { + view.widthAnchor() + .constraintGreaterThanOrEqualToConstant_(size as _) + .setActive_(runtime::YES); + } + } + } + + if !self.ignore_horizontal { + unsafe { + let la = view.leadingAnchor(); + let ta = view.trailingAnchor(); + let pla = lmg.leadingAnchor(); + let pta = lmg.trailingAnchor(); + match style.horizontal_alignment { + Alignment::Fill => { + constraint_equal(la, pla); + constraint_equal(ta, pta); + // Without the autoresizing mask set, Text within Scroll doesn't display + // properly (it shrinks to 0-width, likely due to some specific interaction + // of NSScrollView with autolayout). + view.setAutoresizingMask_(cocoa::NSViewWidthSizable); + } + Alignment::Start => { + constraint_equal(la, pla); + } + Alignment::Center => { + let ca = view.centerXAnchor(); + let pca = lmg.centerXAnchor(); + constraint_equal(ca, pca); + } + Alignment::End => { + constraint_equal(ta, pta); + } + } + } + } + + if !matches!(style.vertical_alignment, Alignment::Fill) { + if let Some(size) = style.vertical_size_request { + unsafe { + view.heightAnchor() + .constraintGreaterThanOrEqualToConstant_(size as _) + .setActive_(runtime::YES); + } + } + } + + if !self.ignore_vertical { + unsafe { + let ta = view.topAnchor(); + let ba = view.bottomAnchor(); + let pta = lmg.topAnchor(); + let pba = lmg.bottomAnchor(); + match style.vertical_alignment { + Alignment::Fill => { + constraint_equal(ta, pta); + constraint_equal(ba, pba); + // Set the autoresizing mask to be consistent with the horizontal settings + // (see the comment there as to why it's necessary). + view.setAutoresizingMask_(cocoa::NSViewHeightSizable); + } + Alignment::Start => { + constraint_equal(ta, pta); + } + Alignment::Center => { + let ca = view.centerYAnchor(); + let pca = lmg.centerYAnchor(); + constraint_equal(ca, pca); + } + Alignment::End => { + constraint_equal(ba, pba); + } + } + } + } + + match &style.visible { + Property::Static(ref v) => { + unsafe { view.setHidden_((!v).into()) }; + } + Property::Binding(b) => { + b.on_change(move |&visible| unsafe { + view.setHidden_((!visible).into()); + }); + unsafe { view.setHidden_((!*b.borrow()).into()) }; + } + Property::ReadOnly(_) => { + unimplemented!("ElementStyle::visible doesn't support ReadOnly") + } + } + + if let Ok(control) = cocoa::NSControl::try_from(view) { + match &style.enabled { + Property::Static(e) => { + unsafe { control.setEnabled_((*e).into()) }; + } + Property::Binding(b) => { + b.on_change(move |&enabled| unsafe { + control.setEnabled_(enabled.into()); + }); + unsafe { control.setEnabled_((*b.borrow()).into()) }; + } + Property::ReadOnly(_) => { + unimplemented!("ElementStyle::enabled doesn't support ReadOnly") + } + } + } else if let Ok(text) = cocoa::NSText::try_from(view) { + let normally_editable = unsafe { text.isEditable() } == runtime::YES; + let normally_selectable = unsafe { text.isSelectable() } == runtime::YES; + let set_enabled = move |enabled: bool| unsafe { + if !enabled { + let mut range = text.selectedRange(); + range.length = 0; + text.setSelectedRange_(range); + } + text.setEditable_((enabled && normally_editable).into()); + text.setSelectable_((enabled && normally_selectable).into()); + text.setBackgroundColor_(if enabled { + cocoa::NSColor::textBackgroundColor() + } else { + cocoa::NSColor::windowBackgroundColor() + }); + text.setTextColor_(if enabled { + cocoa::NSColor::textColor() + } else { + cocoa::NSColor::disabledControlTextColor() + }); + }; + match &style.enabled { + Property::Static(e) => set_enabled(*e), + Property::Binding(b) => { + b.on_change(move |&enabled| set_enabled(enabled)); + set_enabled(*b.borrow()); + } + Property::ReadOnly(_) => { + unimplemented!("ElementStyle::enabled doesn't support ReadOnly") + } + } + } + + unsafe { view.setNeedsDisplay_(runtime::YES) }; + + true + } +} + +fn render_element( + element_type: model::ElementType, + style: &model::ElementStyle, + rtl: bool, +) -> Option<cocoa::NSView> { + use model::ElementType::*; + Some(match element_type { + VBox(model::VBox { items, spacing }) => { + let sv = unsafe { StrongRef::new(cocoa::NSStackView::alloc()) }.autorelease(); + unsafe { + sv.init(); + sv.setOrientation_(cocoa::NSUserInterfaceLayoutOrientationVertical); + sv.setAlignment_(cocoa::NSLayoutAttributeLeading); + sv.setSpacing_(spacing as _); + if style.vertical_alignment != Alignment::Fill { + // Make sure the vbox stays as small as its content. + sv.setHuggingPriority_forOrientation_( + NSLayoutPriorityDefaultHigh, + cocoa::NSLayoutConstraintOrientationVertical, + ); + } + } + let renderer = ViewRenderer::new(rtl, sv, |parent, style, child| { + let gravity: cocoa::NSInteger = match style.vertical_alignment { + Alignment::Start | Alignment::Fill => 1, + Alignment::Center => 2, + Alignment::End => 3, + }; + let parent: cocoa::NSStackView = parent.try_into().unwrap(); + unsafe { parent.addView_inGravity_(child, gravity) }; + }) + .ignore_vertical(true); + for item in items { + renderer.render(item); + } + sv.into() + } + HBox(model::HBox { + mut items, + spacing, + affirmative_order, + }) => { + if affirmative_order { + items.reverse(); + } + let sv = unsafe { StrongRef::new(cocoa::NSStackView::alloc()) }.autorelease(); + unsafe { + sv.init(); + sv.setOrientation_(cocoa::NSUserInterfaceLayoutOrientationHorizontal); + sv.setAlignment_(cocoa::NSLayoutAttributeTop); + sv.setSpacing_(spacing as _); + if style.horizontal_alignment != Alignment::Fill { + // Make sure the hbox stays as small as its content. + sv.setHuggingPriority_forOrientation_( + NSLayoutPriorityDefaultHigh, + cocoa::NSLayoutConstraintOrientationHorizontal, + ); + } + } + let renderer = ViewRenderer::new(rtl, sv, |parent, style, child| { + let gravity: cocoa::NSInteger = match style.horizontal_alignment { + Alignment::Start | Alignment::Fill => 1, + Alignment::Center => 2, + Alignment::End => 3, + }; + let parent: cocoa::NSStackView = parent.try_into().unwrap(); + unsafe { parent.addView_inGravity_(child, gravity) }; + }) + .ignore_horizontal(true); + for item in items { + renderer.render(item); + } + sv.into() + } + Button(mut b) => { + if let Some(Label(model::Label { + text: Property::Static(text), + .. + })) = b.content.take().map(|e| e.element_type) + { + let button = self::Button { element: b }.with_title(text.as_str()); + button.into() + } else { + return None; + } + } + Checkbox(cb) => { + let button = self::Checkbox { element: cb }.into_button(); + button.into() + } + Label(model::Label { text, bold }) => { + let tf = cocoa::NSTextField(unsafe { + cocoa::NSTextField::wrappingLabelWithString_(nsstring("")) + }); + unsafe { tf.setSelectable_(runtime::NO) }; + if bold { + unsafe { tf.setFont_(cocoa::NSFont::boldSystemFontOfSize_(0.0)) }; + } + match text { + Property::Static(text) => { + unsafe { tf.setStringValue_(nsstring(text.as_str())) }; + } + Property::Binding(b) => { + unsafe { tf.setStringValue_(nsstring(b.borrow().as_str())) }; + b.on_change(move |s| unsafe { tf.setStringValue_(nsstring(s)) }); + } + Property::ReadOnly(_) => unimplemented!("ReadOnly not supported for Label::text"), + } + tf.into() + } + Progress(model::Progress { amount }) => { + fn update(progress: cocoa::NSProgressIndicator, value: Option<f32>) { + unsafe { + match value { + None => { + progress.setIndeterminate_(runtime::YES); + progress.startAnimation_(progress.0); + } + Some(v) => { + progress.setDoubleValue_(v as f64); + progress.setIndeterminate_(runtime::NO); + } + } + } + } + + let progress = unsafe { StrongRef::new(cocoa::NSProgressIndicator::alloc()) }; + unsafe { + progress.init(); + progress.setMinValue_(0.0); + progress.setMaxValue_(1.0); + } + match amount { + Property::Static(v) => update(*progress, v), + Property::Binding(s) => { + update(*progress, *s.borrow()); + let weak = progress.weak(); + s.on_change(move |v| { + if let Some(r) = weak.lock() { + update(*r, *v); + } + }); + } + Property::ReadOnly(_) => (), + } + progress.autorelease().into() + } + Scroll(model::Scroll { content }) => { + let sv = unsafe { StrongRef::new(cocoa::NSScrollView::alloc()) }.autorelease(); + unsafe { + sv.init(); + sv.setHasVerticalScroller_(runtime::YES); + } + if let Some(content) = content { + ViewRenderer::new_with_selector(rtl, sv, sel!(setDocumentView:)) + .ignore_vertical(true) + .render(*content); + } + sv.into() + } + TextBox(model::TextBox { + placeholder, + content, + editable, + }) => { + let tv: StrongRef<cocoa::NSTextView> = TextView.into_object().cast(); + unsafe { + tv.setEditable_(editable.into()); + + cocoa::NSTextView_NSSharing::setAllowsUndo_(&*tv, runtime::YES); + tv.setVerticallyResizable_(runtime::YES); + if rtl { + let ps = StrongRef::new(cocoa::NSMutableParagraphStyle::alloc()); + ps.init(); + ps.setAlignment_(cocoa::NSTextAlignmentRight); + // We don't `use cocoa::NSTextView_NSSharing` because it has some methods which + // conflict with others that make it inconvenient. + cocoa::NSTextView_NSSharing::setDefaultParagraphStyle_(&*tv, (*ps).into()); + } + { + let container = tv.textContainer(); + container.setSize_(cocoa::NSSize { + width: f64::MAX, + height: f64::MAX, + }); + container.setWidthTracksTextView_(runtime::YES); + } + if let Some(placeholder) = placeholder { + // It's unclear why dictionaryWithObject_forKey_ takes `u64` rather than `id` + // arguments. + let attrs = cocoa::NSDictionary( + <cocoa::NSDictionary as NSDictionary_NSDictionaryCreation< + cocoa::NSAttributedStringKey, + cocoa::id, + >>::dictionaryWithObject_forKey_( + cocoa::NSColor::placeholderTextColor().0 as u64, + cocoa::NSForegroundColorAttributeName.0 as u64, + ), + ); + let string = StrongRef::new(cocoa::NSAttributedString( + cocoa::NSAttributedString::alloc() + .initWithString_attributes_(nsstring(placeholder.as_str()), attrs), + )); + // XXX: `setPlaceholderAttributedString` is undocumented (discovered at + // https://stackoverflow.com/a/43028577 and works identically to NSTextField), + // though hopefully it will be exposed in a public API some day. + tv.performSelector_withObject_(sel!(setPlaceholderAttributedString:), string.0); + } + } + match content { + Property::Static(s) => unsafe { tv.setString_(nsstring(s.as_str())) }, + Property::ReadOnly(od) => { + let weak = tv.weak(); + od.register(move |s| { + if let Some(tv) = weak.lock() { + *s = read_nsstring(unsafe { tv.string() }); + } + }); + } + Property::Binding(b) => { + let weak = tv.weak(); + b.on_change(move |s| { + if let Some(tv) = weak.lock() { + unsafe { tv.setString_(nsstring(s.as_str())) }; + } + }); + unsafe { tv.setString_(nsstring(b.borrow().as_str())) }; + } + } + tv.autorelease().into() + } + }) +} |