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Diffstat (limited to 'widget/cocoa/nsLookAndFeel.mm')
| -rw-r--r-- | widget/cocoa/nsLookAndFeel.mm | 691 |
1 files changed, 691 insertions, 0 deletions
diff --git a/widget/cocoa/nsLookAndFeel.mm b/widget/cocoa/nsLookAndFeel.mm new file mode 100644 index 0000000000..65e852b38e --- /dev/null +++ b/widget/cocoa/nsLookAndFeel.mm @@ -0,0 +1,691 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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/. */ + +#include "AppearanceOverride.h" +#include "mozilla/widget/ThemeChangeKind.h" +#include "nsLookAndFeel.h" +#include "nsCocoaFeatures.h" +#include "nsNativeThemeColors.h" +#include "nsStyleConsts.h" +#include "nsCocoaFeatures.h" +#include "nsIContent.h" +#include "gfxFont.h" +#include "gfxFontConstants.h" +#include "gfxPlatformMac.h" +#include "nsCSSColorUtils.h" +#include "mozilla/FontPropertyTypes.h" +#include "mozilla/gfx/2D.h" +#include "mozilla/StaticPrefs_widget.h" +#include "mozilla/Telemetry.h" +#include "mozilla/widget/WidgetMessageUtils.h" +#include "SDKDeclarations.h" + +#import <Cocoa/Cocoa.h> +#import <AppKit/NSColor.h> + +// This must be included last: +#include "nsObjCExceptions.h" + +using namespace mozilla; + +@interface MOZLookAndFeelDynamicChangeObserver : NSObject ++ (void)startObserving; +@end + +nsLookAndFeel::nsLookAndFeel() = default; + +nsLookAndFeel::~nsLookAndFeel() = default; + +void nsLookAndFeel::NativeInit() { + NS_OBJC_BEGIN_TRY_ABORT_BLOCK + + [MOZLookAndFeelDynamicChangeObserver startObserving]; + RecordTelemetry(); + + NS_OBJC_END_TRY_ABORT_BLOCK +} + +static nscolor GetColorFromNSColor(NSColor* aColor) { + NSColor* deviceColor = [aColor colorUsingColorSpaceName:NSDeviceRGBColorSpace]; + return NS_RGBA((unsigned int)(deviceColor.redComponent * 255.0), + (unsigned int)(deviceColor.greenComponent * 255.0), + (unsigned int)(deviceColor.blueComponent * 255.0), + (unsigned int)(deviceColor.alphaComponent * 255.0)); +} + +static nscolor GetColorFromNSColorWithCustomAlpha(NSColor* aColor, float alpha) { + NSColor* deviceColor = [aColor colorUsingColorSpaceName:NSDeviceRGBColorSpace]; + return NS_RGBA((unsigned int)(deviceColor.redComponent * 255.0), + (unsigned int)(deviceColor.greenComponent * 255.0), + (unsigned int)(deviceColor.blueComponent * 255.0), (unsigned int)(alpha * 255.0)); +} + +// Turns an opaque selection color into a partially transparent selection color, +// which usually leads to better contrast with the text color and which should +// look more visually appealing in most contexts. +// The idea is that the text and its regular, non-selected background are +// usually chosen in such a way that they contrast well. Making the selection +// color partially transparent causes the selection color to mix with the text's +// regular background, so the end result will often have better contrast with +// the text than an arbitrary opaque selection color. +// The motivating example for this is the light selection color on dark web +// pages: White text on a light blue selection color has very bad contrast, +// whereas white text on dark blue (which what you get if you mix +// partially-transparent light blue with the black textbox background) has much +// better contrast. +nscolor nsLookAndFeel::ProcessSelectionBackground(nscolor aColor, ColorScheme aScheme) { + if (aScheme == ColorScheme::Dark) { + // When we use a dark selection color, we do not change alpha because we do + // not use dark selection in content. The dark system color is appropriate for + // Firefox UI without needing to adjust its alpha. + return aColor; + } + uint16_t hue, sat, value; + uint8_t alpha; + nscolor resultColor = aColor; + NS_RGB2HSV(resultColor, hue, sat, value, alpha); + int factor = 2; + alpha = alpha / factor; + if (sat > 0) { + // The color is not a shade of grey, restore the saturation taken away by + // the transparency. + sat = mozilla::clamped(sat * factor, 0, 255); + } else { + // The color is a shade of grey, find the value that looks equivalent + // on a white background with the given opacity. + value = mozilla::clamped(255 - (255 - value) * factor, 0, 255); + } + NS_HSV2RGB(resultColor, hue, sat, value, alpha); + return resultColor; +} + +nsresult nsLookAndFeel::NativeGetColor(ColorID aID, ColorScheme aScheme, nscolor& aColor) { + NS_OBJC_BEGIN_TRY_ABORT_BLOCK + + if (@available(macOS 10.14, *)) { + // No-op. macOS 10.14+ supports dark mode, so currentAppearance can be set + // to either Light or Dark. + } else { + // System colors before 10.14 are always Light. + aScheme = ColorScheme::Light; + } + + NSAppearance.currentAppearance = NSAppearanceForColorScheme(aScheme); + + nscolor color = 0; + switch (aID) { + case ColorID::Infobackground: + color = aScheme == ColorScheme::Light ? NS_RGB(0xdd, 0xdd, 0xdd) + : GetColorFromNSColor(NSColor.windowBackgroundColor); + break; + case ColorID::Highlight: + color = ProcessSelectionBackground(GetColorFromNSColor(NSColor.selectedTextBackgroundColor), + aScheme); + break; + // This is used to gray out the selection when it's not focused. Used with + // nsISelectionController::SELECTION_DISABLED. + case ColorID::TextSelectDisabledBackground: + color = ProcessSelectionBackground(GetColorFromNSColor(NSColor.secondarySelectedControlColor), + aScheme); + break; + case ColorID::MozMenuhoverdisabled: + aColor = NS_TRANSPARENT; + break; + case ColorID::MozMenuhover: + case ColorID::Selecteditem: + color = GetColorFromNSColor(NSColor.alternateSelectedControlColor); + break; + case ColorID::Accentcolortext: + case ColorID::MozMenuhovertext: + case ColorID::Selecteditemtext: + color = GetColorFromNSColor(NSColor.alternateSelectedControlTextColor); + break; + case ColorID::IMESelectedRawTextBackground: + case ColorID::IMESelectedConvertedTextBackground: + case ColorID::IMERawInputBackground: + case ColorID::IMEConvertedTextBackground: + color = NS_TRANSPARENT; + break; + case ColorID::IMESelectedRawTextForeground: + case ColorID::IMESelectedConvertedTextForeground: + case ColorID::IMERawInputForeground: + case ColorID::IMEConvertedTextForeground: + case ColorID::Highlighttext: + color = NS_SAME_AS_FOREGROUND_COLOR; + break; + case ColorID::IMERawInputUnderline: + case ColorID::IMEConvertedTextUnderline: + color = NS_40PERCENT_FOREGROUND_COLOR; + break; + case ColorID::IMESelectedRawTextUnderline: + case ColorID::IMESelectedConvertedTextUnderline: + color = NS_SAME_AS_FOREGROUND_COLOR; + break; + + // + // css2 system colors http://www.w3.org/TR/REC-CSS2/ui.html#system-colors + // + // It's really hard to effectively map these to the Appearance Manager properly, + // since they are modeled word for word after the win32 system colors and don't have any + // real counterparts in the Mac world. I'm sure we'll be tweaking these for + // years to come. + // + // Thanks to mpt26@student.canterbury.ac.nz for the hardcoded values that form the defaults + // if querying the Appearance Manager fails ;) + // + case ColorID::MozMacDefaultbuttontext: + color = NS_RGB(0xFF, 0xFF, 0xFF); + break; + case ColorID::MozButtonactivetext: + // Pre-macOS 12, pressed buttons were filled with the highlight color and the text was white. + // Starting with macOS 12, pressed (non-default) buttons are filled with medium gray and the + // text color is the same as in the non-pressed state. + color = nsCocoaFeatures::OnMontereyOrLater() ? GetColorFromNSColor(NSColor.controlTextColor) + : NS_RGB(0xFF, 0xFF, 0xFF); + break; + case ColorID::Captiontext: + case ColorID::Menutext: + case ColorID::Infotext: + case ColorID::MozMenubartext: + color = GetColorFromNSColor(NSColor.textColor); + break; + case ColorID::Windowtext: + color = GetColorFromNSColor(NSColor.windowFrameTextColor); + break; + case ColorID::Activecaption: + color = GetColorFromNSColor(NSColor.gridColor); + break; + case ColorID::Activeborder: + color = GetColorFromNSColor(NSColor.keyboardFocusIndicatorColor); + break; + case ColorID::Appworkspace: + color = NS_RGB(0xFF, 0xFF, 0xFF); + break; + case ColorID::Background: + color = NS_RGB(0x63, 0x63, 0xCE); + break; + case ColorID::Buttonface: + case ColorID::MozButtonhoverface: + case ColorID::MozButtonactiveface: + case ColorID::MozButtondisabledface: + color = GetColorFromNSColor(NSColor.controlColor); + if (!NS_GET_A(color)) { + color = GetColorFromNSColor(NSColor.controlBackgroundColor); + } + break; + case ColorID::Buttonhighlight: + color = GetColorFromNSColor(NSColor.selectedControlColor); + break; + case ColorID::Inactivecaptiontext: + color = NS_RGB(0x45, 0x45, 0x45); + break; + case ColorID::Scrollbar: + color = GetColorFromNSColor(NSColor.scrollBarColor); + break; + case ColorID::Threedhighlight: + color = GetColorFromNSColor(NSColor.highlightColor); + break; + case ColorID::Buttonshadow: + case ColorID::Threeddarkshadow: + color = aScheme == ColorScheme::Dark ? *GenericDarkColor(aID) : NS_RGB(0xDC, 0xDC, 0xDC); + break; + case ColorID::Threedshadow: + color = aScheme == ColorScheme::Dark ? *GenericDarkColor(aID) : NS_RGB(0xE0, 0xE0, 0xE0); + break; + case ColorID::Threedface: + color = aScheme == ColorScheme::Dark ? *GenericDarkColor(aID) : NS_RGB(0xF0, 0xF0, 0xF0); + break; + case ColorID::Threedlightshadow: + case ColorID::Buttonborder: + case ColorID::MozDisabledfield: + color = aScheme == ColorScheme::Dark ? *GenericDarkColor(aID) : NS_RGB(0xDA, 0xDA, 0xDA); + break; + case ColorID::Menu: + color = GetColorFromNSColor(NSColor.textBackgroundColor); + break; + case ColorID::Windowframe: + color = GetColorFromNSColor(NSColor.windowFrameColor); + break; + case ColorID::Window: { + if (@available(macOS 10.14, *)) { + color = GetColorFromNSColor(NSColor.windowBackgroundColor); + } else { + // On 10.13 and below, NSColor.windowBackgroundColor is transparent black. + // Use a light grey instead (taken from macOS 11.5). + color = NS_RGB(0xF6, 0xF6, 0xF6); + } + break; + } + case ColorID::Field: + case ColorID::MozCombobox: + case ColorID::Inactiveborder: + case ColorID::Inactivecaption: + case ColorID::MozDialog: + color = GetColorFromNSColor(NSColor.controlBackgroundColor); + break; + case ColorID::Fieldtext: + case ColorID::MozComboboxtext: + case ColorID::Buttontext: + case ColorID::MozButtonhovertext: + case ColorID::MozDialogtext: + case ColorID::MozCellhighlighttext: + case ColorID::MozColheadertext: + case ColorID::MozColheaderhovertext: + color = GetColorFromNSColor(NSColor.controlTextColor); + break; + case ColorID::MozDragtargetzone: + color = GetColorFromNSColor(NSColor.selectedControlColor); + break; + case ColorID::MozMacChromeActive: { + int grey = NativeGreyColorAsInt(toolbarFillGrey, true); + color = NS_RGB(grey, grey, grey); + break; + } + case ColorID::MozMacChromeInactive: { + int grey = NativeGreyColorAsInt(toolbarFillGrey, false); + color = NS_RGB(grey, grey, grey); + break; + } + case ColorID::MozMacFocusring: + color = GetColorFromNSColorWithCustomAlpha(NSColor.keyboardFocusIndicatorColor, 0.48); + break; + case ColorID::MozMacMenushadow: + color = NS_RGB(0xA3, 0xA3, 0xA3); + break; + case ColorID::MozMacMenutextdisable: + color = NS_RGB(0x98, 0x98, 0x98); + break; + case ColorID::MozMacMenutextselect: + color = GetColorFromNSColor(NSColor.selectedMenuItemTextColor); + break; + case ColorID::MozMacDisabledtoolbartext: + case ColorID::Graytext: + color = GetColorFromNSColor(NSColor.disabledControlTextColor); + break; + case ColorID::MozMacMenuselect: + color = GetColorFromNSColor(NSColor.alternateSelectedControlColor); + break; + case ColorID::MozButtondefault: + color = NS_RGB(0xDC, 0xDC, 0xDC); + break; + case ColorID::MozCellhighlight: + case ColorID::MozMacSecondaryhighlight: + // For inactive list selection + color = GetColorFromNSColor(NSColor.secondarySelectedControlColor); + break; + case ColorID::MozEventreerow: + // Background color of even list rows. + color = GetColorFromNSColor(NSColor.controlAlternatingRowBackgroundColors[0]); + break; + case ColorID::MozOddtreerow: + // Background color of odd list rows. + color = GetColorFromNSColor(NSColor.controlAlternatingRowBackgroundColors[1]); + break; + case ColorID::MozNativehyperlinktext: + color = GetColorFromNSColor(NSColor.linkColor); + break; + case ColorID::MozNativevisitedhyperlinktext: + color = GetColorFromNSColor(NSColor.systemPurpleColor); + break; + case ColorID::MozMacTooltip: + case ColorID::MozMacMenupopup: + case ColorID::MozMacMenuitem: + color = aScheme == ColorScheme::Light ? NS_RGB(0xf6, 0xf6, 0xf6) : NS_RGB(0x28, 0x28, 0x28); + break; + case ColorID::MozMacSourceList: + color = aScheme == ColorScheme::Light ? NS_RGB(0xf6, 0xf6, 0xf6) : NS_RGB(0x2d, 0x2d, 0x2d); + break; + case ColorID::MozMacSourceListSelection: + color = aScheme == ColorScheme::Light ? NS_RGB(0xd3, 0xd3, 0xd3) : NS_RGB(0x2d, 0x2d, 0x2d); + break; + case ColorID::MozMacActiveMenuitem: + case ColorID::MozMacActiveSourceListSelection: + case ColorID::Accentcolor: + color = GetColorFromNSColor(ControlAccentColor()); + break; + case ColorID::Marktext: + case ColorID::Mark: + case ColorID::SpellCheckerUnderline: + aColor = GetStandinForNativeColor(aID, aScheme); + return NS_OK; + default: + aColor = NS_RGB(0xff, 0xff, 0xff); + return NS_ERROR_FAILURE; + } + + aColor = color; + return NS_OK; + + NS_OBJC_END_TRY_ABORT_BLOCK +} + +nsresult nsLookAndFeel::NativeGetInt(IntID aID, int32_t& aResult) { + NS_OBJC_BEGIN_TRY_BLOCK_RETURN; + + nsresult res = NS_OK; + + switch (aID) { + case IntID::ScrollButtonLeftMouseButtonAction: + aResult = 0; + break; + case IntID::ScrollButtonMiddleMouseButtonAction: + case IntID::ScrollButtonRightMouseButtonAction: + aResult = 3; + break; + case IntID::CaretBlinkTime: + aResult = 567; + break; + case IntID::CaretWidth: + aResult = 1; + break; + case IntID::ShowCaretDuringSelection: + aResult = 0; + break; + case IntID::SelectTextfieldsOnKeyFocus: + // Select textfield content when focused by kbd + // used by EventStateManager::sTextfieldSelectModel + aResult = 1; + break; + case IntID::SubmenuDelay: + aResult = 200; + break; + case IntID::TooltipDelay: + aResult = 500; + break; + case IntID::MenusCanOverlapOSBar: + // xul popups are not allowed to overlap the menubar. + aResult = 0; + break; + case IntID::SkipNavigatingDisabledMenuItem: + aResult = 1; + break; + case IntID::DragThresholdX: + case IntID::DragThresholdY: + aResult = 4; + break; + case IntID::ScrollArrowStyle: + aResult = eScrollArrow_None; + break; + case IntID::UseOverlayScrollbars: + case IntID::AllowOverlayScrollbarsOverlap: + aResult = NSScroller.preferredScrollerStyle == NSScrollerStyleOverlay; + break; + case IntID::ScrollbarDisplayOnMouseMove: + aResult = 0; + break; + case IntID::ScrollbarFadeBeginDelay: + aResult = 450; + break; + case IntID::ScrollbarFadeDuration: + aResult = 200; + break; + case IntID::TreeOpenDelay: + aResult = 1000; + break; + case IntID::TreeCloseDelay: + aResult = 1000; + break; + case IntID::TreeLazyScrollDelay: + aResult = 150; + break; + case IntID::TreeScrollDelay: + aResult = 100; + break; + case IntID::TreeScrollLinesMax: + aResult = 3; + break; + case IntID::MacGraphiteTheme: + aResult = NSColor.currentControlTint == NSGraphiteControlTint; + break; + case IntID::MacBigSurTheme: + aResult = nsCocoaFeatures::OnBigSurOrLater(); + break; + case IntID::MacRTL: + aResult = IsSystemOrientationRTL(); + break; + case IntID::AlertNotificationOrigin: + aResult = NS_ALERT_TOP; + break; + case IntID::TabFocusModel: + aResult = [NSApp isFullKeyboardAccessEnabled] ? nsIContent::eTabFocus_any + : nsIContent::eTabFocus_textControlsMask; + break; + case IntID::ScrollToClick: { + aResult = [[NSUserDefaults standardUserDefaults] boolForKey:@"AppleScrollerPagingBehavior"]; + } break; + case IntID::ChosenMenuItemsShouldBlink: + aResult = 1; + break; + case IntID::IMERawInputUnderlineStyle: + case IntID::IMEConvertedTextUnderlineStyle: + case IntID::IMESelectedRawTextUnderlineStyle: + case IntID::IMESelectedConvertedTextUnderline: + aResult = static_cast<int32_t>(StyleTextDecorationStyle::Solid); + break; + case IntID::SpellCheckerUnderlineStyle: + aResult = static_cast<int32_t>(StyleTextDecorationStyle::Dotted); + break; + case IntID::ScrollbarButtonAutoRepeatBehavior: + aResult = 0; + break; + case IntID::SwipeAnimationEnabled: + aResult = NSEvent.isSwipeTrackingFromScrollEventsEnabled; + break; + case IntID::ContextMenuOffsetVertical: + aResult = -6; + break; + case IntID::ContextMenuOffsetHorizontal: + aResult = 1; + break; + case IntID::SystemUsesDarkTheme: + aResult = SystemWantsDarkTheme(); + break; + case IntID::PrefersReducedMotion: + aResult = NSWorkspace.sharedWorkspace.accessibilityDisplayShouldReduceMotion; + break; + case IntID::PrefersReducedTransparency: + aResult = NSWorkspace.sharedWorkspace.accessibilityDisplayShouldReduceTransparency; + break; + case IntID::InvertedColors: + aResult = NSWorkspace.sharedWorkspace.accessibilityDisplayShouldInvertColors; + break; + case IntID::UseAccessibilityTheme: + aResult = NSWorkspace.sharedWorkspace.accessibilityDisplayShouldIncreaseContrast; + break; + case IntID::VideoDynamicRange: { + // If the platform says it supports HDR, then we claim to support video-dynamic-range. + gfxPlatform* platform = gfxPlatform::GetPlatform(); + MOZ_ASSERT(platform); + aResult = platform->SupportsHDR(); + break; + } + case IntID::PanelAnimations: + aResult = 1; + break; + default: + aResult = 0; + res = NS_ERROR_FAILURE; + } + return res; + + NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE); +} + +nsresult nsLookAndFeel::NativeGetFloat(FloatID aID, float& aResult) { + NS_OBJC_BEGIN_TRY_BLOCK_RETURN; + + nsresult res = NS_OK; + + switch (aID) { + case FloatID::IMEUnderlineRelativeSize: + aResult = 2.0f; + break; + case FloatID::SpellCheckerUnderlineRelativeSize: + aResult = 2.0f; + break; + case FloatID::CursorScale: { + id uaDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"com.apple.universalaccess"]; + float f = [uaDefaults floatForKey:@"mouseDriverCursorSize"]; + [uaDefaults release]; + aResult = f > 0.0 ? f : 1.0; // default to 1.0 if value not available + break; + } + default: + aResult = -1.0; + res = NS_ERROR_FAILURE; + } + + return res; + + NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE); +} + +bool nsLookAndFeel::SystemWantsDarkTheme() { + // This returns true if the macOS system appearance is set to dark mode on + // 10.14+, false otherwise. + if (@available(macOS 10.14, *)) { + NSAppearanceName aquaOrDarkAqua = [NSApp.effectiveAppearance + bestMatchFromAppearancesWithNames:@[ NSAppearanceNameAqua, NSAppearanceNameDarkAqua ]]; + return [aquaOrDarkAqua isEqualToString:NSAppearanceNameDarkAqua]; + } + return false; +} + +/*static*/ +bool nsLookAndFeel::IsSystemOrientationRTL() { + NSWindow* window = [[NSWindow alloc] initWithContentRect:NSZeroRect + styleMask:NSWindowStyleMaskBorderless + backing:NSBackingStoreBuffered + defer:NO]; + auto direction = window.windowTitlebarLayoutDirection; + [window release]; + return direction == NSUserInterfaceLayoutDirectionRightToLeft; +} + +bool nsLookAndFeel::NativeGetFont(FontID aID, nsString& aFontName, gfxFontStyle& aFontStyle) { + NS_OBJC_BEGIN_TRY_BLOCK_RETURN; + + nsAutoCString name; + gfxPlatformMac::LookupSystemFont(aID, name, aFontStyle); + aFontName.Append(NS_ConvertUTF8toUTF16(name)); + + return true; + + NS_OBJC_END_TRY_BLOCK_RETURN(false); +} + +void nsLookAndFeel::RecordAccessibilityTelemetry() { + if ([[NSWorkspace sharedWorkspace] + respondsToSelector:@selector(accessibilityDisplayShouldInvertColors)]) { + bool val = [[NSWorkspace sharedWorkspace] accessibilityDisplayShouldInvertColors]; + Telemetry::ScalarSet(Telemetry::ScalarID::A11Y_INVERT_COLORS, val); + } +} + +@implementation MOZLookAndFeelDynamicChangeObserver + ++ (void)startObserving { + static MOZLookAndFeelDynamicChangeObserver* gInstance = nil; + if (!gInstance) { + gInstance = [[MOZLookAndFeelDynamicChangeObserver alloc] init]; // leaked + } +} + +- (instancetype)init { + self = [super init]; + + [NSNotificationCenter.defaultCenter addObserver:self + selector:@selector(colorsChanged) + name:NSControlTintDidChangeNotification + object:nil]; + [NSNotificationCenter.defaultCenter addObserver:self + selector:@selector(colorsChanged) + name:NSSystemColorsDidChangeNotification + object:nil]; + + if (@available(macOS 10.14, *)) { + [NSWorkspace.sharedWorkspace.notificationCenter + addObserver:self + selector:@selector(mediaQueriesChanged) + name:NSWorkspaceAccessibilityDisplayOptionsDidChangeNotification + object:nil]; + } else { + [NSNotificationCenter.defaultCenter + addObserver:self + selector:@selector(mediaQueriesChanged) + name:NSWorkspaceAccessibilityDisplayOptionsDidChangeNotification + object:nil]; + } + + [NSNotificationCenter.defaultCenter addObserver:self + selector:@selector(scrollbarsChanged) + name:NSPreferredScrollerStyleDidChangeNotification + object:nil]; + [NSDistributedNotificationCenter.defaultCenter + addObserver:self + selector:@selector(scrollbarsChanged) + name:@"AppleAquaScrollBarVariantChanged" + object:nil + suspensionBehavior:NSNotificationSuspensionBehaviorDeliverImmediately]; + [NSDistributedNotificationCenter.defaultCenter + addObserver:self + selector:@selector(cachedValuesChanged) + name:@"AppleNoRedisplayAppearancePreferenceChanged" + object:nil + suspensionBehavior:NSNotificationSuspensionBehaviorCoalesce]; + [NSDistributedNotificationCenter.defaultCenter + addObserver:self + selector:@selector(cachedValuesChanged) + name:@"com.apple.KeyboardUIModeDidChange" + object:nil + suspensionBehavior:NSNotificationSuspensionBehaviorDeliverImmediately]; + + [MOZGlobalAppearance.sharedInstance addObserver:self + forKeyPath:@"effectiveAppearance" + options:0 + context:nil]; + [NSApp addObserver:self forKeyPath:@"effectiveAppearance" options:0 context:nil]; + + return self; +} + +- (void)observeValueForKeyPath:(NSString*)keyPath + ofObject:(id)object + change:(NSDictionary<NSKeyValueChangeKey, id>*)change + context:(void*)context { + if ([keyPath isEqualToString:@"effectiveAppearance"]) { + [self entireThemeChanged]; + } else { + [super observeValueForKeyPath:keyPath ofObject:object change:change context:context]; + } +} + +- (void)entireThemeChanged { + LookAndFeel::NotifyChangedAllWindows(widget::ThemeChangeKind::StyleAndLayout); +} + +- (void)scrollbarsChanged { + LookAndFeel::NotifyChangedAllWindows(widget::ThemeChangeKind::StyleAndLayout); +} + +- (void)mediaQueriesChanged { + // Changing`Invert Colors` sends AccessibilityDisplayOptionsDidChangeNotifications. + // We monitor that setting via telemetry, so call into that + // recording method here. + nsLookAndFeel::RecordAccessibilityTelemetry(); + LookAndFeel::NotifyChangedAllWindows(widget::ThemeChangeKind::MediaQueriesOnly); +} + +- (void)colorsChanged { + LookAndFeel::NotifyChangedAllWindows(widget::ThemeChangeKind::Style); +} + +- (void)cachedValuesChanged { + // We only need to re-cache (and broadcast) updated LookAndFeel values, so that they're + // up-to-date the next time they're queried. No further change handling is needed. + // TODO: Add a change hint for this which avoids the unnecessary media query invalidation. + LookAndFeel::NotifyChangedAllWindows(widget::ThemeChangeKind::MediaQueriesOnly); +} +@end |