gecko-dev/widget/cocoa/AppearanceOverride.mm

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/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
/* 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/. */
#import <Cocoa/Cocoa.h>
#include "AppearanceOverride.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_browser.h"
#include "mozilla/StaticPrefs_widget.h"
#include "nsXULAppAPI.h"
#include "SDKDeclarations.h"
static void ToolbarThemePrefChanged(const char* aPref, void* aUserInfo);
@interface MOZGlobalAppearance ()
@property NSInteger toolbarTheme;
@end
@implementation MOZGlobalAppearance
+ (MOZGlobalAppearance*)sharedInstance {
static MOZGlobalAppearance* sInstance = nil;
if (!sInstance) {
sInstance = [[MOZGlobalAppearance alloc] init];
if (XRE_IsParentProcess()) {
mozilla::Preferences::RegisterCallbackAndCall(
&ToolbarThemePrefChanged,
nsDependentCString(mozilla::StaticPrefs::GetPrefName_browser_theme_toolbar_theme()));
}
}
return sInstance;
}
+ (NSSet*)keyPathsForValuesAffectingAppearance {
return [NSSet setWithObjects:@"toolbarTheme", nil];
}
- (NSAppearance*)appearance {
if (@available(macOS 10.14, *)) {
switch (self.toolbarTheme) { // Value for browser.theme.toolbar-theme pref
case 0: // Dark
return [NSAppearance appearanceNamed:NSAppearanceNameDarkAqua];
case 1: // Light
return [NSAppearance appearanceNamed:NSAppearanceNameAqua];
case 2: // System
default:
break;
}
}
// nil means "no override".
return nil;
}
- (void)setAppearance:(NSAppearance*)aAppearance {
// ignored
}
- (NSApplication*)_app {
return NSApp;
}
+ (NSSet*)keyPathsForValuesAffectingEffectiveAppearance {
if (@available(macOS 10.14, *)) {
// Automatically notify any key-value observers of our effectiveAppearance property whenever the
// pref or the NSApp's effectiveAppearance change.
return [NSSet setWithObjects:@"toolbarTheme", @"_app.effectiveAppearance", nil];
}
return [NSSet set];
}
- (NSAppearance*)effectiveAppearance {
if (@available(macOS 10.14, *)) {
switch (self.toolbarTheme) { // Value for browser.theme.toolbar-theme pref
case 0: // Dark
return [NSAppearance appearanceNamed:NSAppearanceNameDarkAqua];
case 1: // Light
return [NSAppearance appearanceNamed:NSAppearanceNameAqua];
case 2: // System
default:
// Use the NSApp effectiveAppearance. This is the system appearance.
return NSApp.effectiveAppearance;
}
}
// Use aqua on pre-10.14.
return [NSAppearance appearanceNamed:NSAppearanceNameAqua];
}
@end
static void ToolbarThemePrefChanged(const char* aPref, void* aUserInfo) {
MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
MOZ_RELEASE_ASSERT(NS_IsMainThread());
MOZGlobalAppearance.sharedInstance.toolbarTheme =
mozilla::StaticPrefs::browser_theme_toolbar_theme();
}