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feat: add media access APIs for macOS Mojave (#15624)

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codebytere committed Dec 4, 2018
1 parent aa2b2f7 commit c31629ad98a4510b1da1506599c6b37a1c2cf2d7
@@ -595,6 +595,7 @@ if (is_mac) {
sources = filenames.framework_sources
libs = [
@@ -89,6 +89,9 @@ void SystemPreferences::BuildPrototype(
.SetMethod("askForMediaAccess", &SystemPreferences::AskForMediaAccess)
@@ -9,6 +9,7 @@
#include <string>
#include "atom/browser/api/event_emitter.h"
#include "atom/common/promise_util.h"
#include "base/callback.h"
#include "base/values.h"
#include "native_mate/handle.h"
@@ -90,6 +91,13 @@ class SystemPreferences : public mate::EventEmitter<SystemPreferences>
void RemoveUserDefault(const std::string& name);
bool IsSwipeTrackingFromScrollEventsEnabled();
// TODO(codebytere): Write tests for these methods once we
// are running tests on a Mojave machine
std::string GetMediaAccessStatus(const std::string& media_type,
mate::Arguments* args);
v8::Local<v8::Promise> AskForMediaAccess(v8::Isolate* isolate,
const std::string& media_type);
// TODO(MarshallOfSound): Write tests for these methods once we
// are running tests on a Mojave machine
v8::Local<v8::Value> GetEffectiveAppearance(v8::Isolate* isolate);
@@ -6,6 +6,7 @@
#include <map>
#import <AVFoundation/AVFoundation.h>
#import <Cocoa/Cocoa.h>
#include "atom/browser/mac/atom_application.h"
@@ -78,6 +79,31 @@ static bool FromV8(v8::Isolate* isolate,
// The map to convert |id| to |int|.
std::map<int, id> g_id_map;
AVMediaType ParseMediaType(const std::string& media_type) {
if (media_type == "camera") {
return AVMediaTypeVideo;
} else if (media_type == "microphone") {
return AVMediaTypeAudio;
} else {
return nil;
std::string ConvertAuthorizationStatus(AVAuthorizationStatusMac status) {
switch (status) {
case AVAuthorizationStatusNotDeterminedMac:
return "not-determined";
case AVAuthorizationStatusRestrictedMac:
return "restricted";
case AVAuthorizationStatusDeniedMac:
return "denied";
case AVAuthorizationStatusAuthorizedMac:
return "granted";
return "unknown";
} // namespace
void SystemPreferences::PostNotification(
@@ -360,6 +386,47 @@ static bool FromV8(v8::Isolate* isolate,
std::string SystemPreferences::GetMediaAccessStatus(
const std::string& media_type,
mate::Arguments* args) {
if (auto type = ParseMediaType(media_type)) {
if (@available(macOS 10.14, *)) {
return ConvertAuthorizationStatus(
[AVCaptureDevice authorizationStatusForMediaType:type]);
} else {
// access always allowed pre-10.14 Mojave
return ConvertAuthorizationStatus(AVAuthorizationStatusAuthorizedMac);
} else {
args->ThrowError("Invalid media type");
return std::string();
v8::Local<v8::Promise> SystemPreferences::AskForMediaAccess(
v8::Isolate* isolate,
const std::string& media_type) {
scoped_refptr<util::Promise> promise = new util::Promise(isolate);
if (auto type = ParseMediaType(media_type)) {
if (@available(macOS 10.14, *)) {
[AVCaptureDevice requestAccessForMediaType:type
completionHandler:^(BOOL granted) {
dispatch_async(dispatch_get_main_queue(), ^{
} else {
// access always allowed pre-10.14 Mojave
} else {
promise->RejectWithErrorMessage("Invalid media type");
return promise->GetHandle();
void SystemPreferences::RemoveUserDefault(const std::string& name) {
NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
[defaults removeObjectForKey:base::SysUTF8ToNSString(name)];
@@ -6,14 +6,37 @@
#include "base/mac/scoped_nsobject.h"
#include "base/mac/scoped_sending_event.h"
// Forward Declare Appareance APIs
#import <AVFoundation/AVFoundation.h>
// Forward Declare Appearance APIs
@interface NSApplication (HighSierraSDK)
@property(copy, readonly)
NSAppearance* effectiveAppearance API_AVAILABLE(macosx(10.14));
@property(copy, readonly) NSAppearance* appearance API_AVAILABLE(macosx(10.14));
- (void)setAppearance:(NSAppearance*)appearance API_AVAILABLE(macosx(10.14));
// forward declare Access APIs
AVF_EXPORT AVMediaType const AVMediaTypeVideo;
AVF_EXPORT AVMediaType const AVMediaTypeAudio;
typedef NS_ENUM(NSInteger, AVAuthorizationStatusMac) {
AVAuthorizationStatusNotDeterminedMac = 0,
AVAuthorizationStatusRestrictedMac = 1,
AVAuthorizationStatusDeniedMac = 2,
AVAuthorizationStatusAuthorizedMac = 3,
@interface AVCaptureDevice (MojaveSDK)
+ (void)requestAccessForMediaType:(AVMediaType)mediaType
completionHandler:(void (^)(BOOL granted))handler
+ (AVAuthorizationStatusMac)authorizationStatusForMediaType:
(AVMediaType)mediaType API_AVAILABLE(macosx(10.14));
extern "C" {
#if !defined(MAC_OS_X_VERSION_10_14) || \
@@ -311,7 +311,6 @@ using `electron-packager` or `electron-forge` just set the `enableDarwinDarkMode
packager option to `true`. See the [Electron Packager API](
for more details.
### `systemPreferences.getAppLevelAppearance()` _macOS_
Returns `String` | `null` - Can be `dark`, `light` or `unknown`.
@@ -326,3 +325,21 @@ You can use the `setAppLevelAppearance` API to set this value.
Sets the appearance setting for your application, this should override the
system default and override the value of `getEffectiveAppearance`.
### `systemPreferences.getMediaAccessStatus(mediaType)` _macOS_
* `mediaType` String - `microphone` or `camera`.
Returns `String` - Can be `not-determined`, `granted`, `denied`, `restricted` or `unknown`.
This user consent was not required until macOS 10.14 Mojave, so this method will always return `granted` if your system is running 10.13 High Sierra or lower.
### `systemPreferences.askForMediaAccess(mediaType)` _macOS_
* `mediaType` String - the type of media being requested; can be `microphone`, `camera`.
Returns `Promise<Boolean>` - A promise that resolves with `true` if consent was granted and `false` if it was denied. If an invalid `mediaType` is passed, the promise will be rejected. If an access request was denied and later is changed through the System Preferences pane, a restart of the app will be required for the new permissions to take effect. If access has already been requested and denied, it _must_ be changed through the preference pane; an alert will not pop up and the promise will resolve with the existing access status.
**Important:** In order to properly leverage this API, you [must set]( the `NSMicrophoneUsageDescription` and `NSCameraUsageDescription` strings in your app's `Info.plist` file. The values for these keys will be used to populate the permission dialogs so that the user will be properly informed as to the purpose of the permission request. See [Electron Application Distribution]( for more information about how to set these in the context of Electron.
This user consent was not required until macOS 10.14 Mojave, so this method will always return `true` if your system is running 10.13 High Sierra or lower.

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