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feat: allow null when subscribing notification (#33641)

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* feat: allow null when subscribing notification

* docs: document null event
This commit is contained in:
Shelley Vohr 2022-04-13 22:02:33 +02:00 • committed by GitHub
parent bfbba9dad6
commit b66667b843
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4 changed files with 67 additions and 15 deletions
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29
shell/browser/api/electron_api_system_preferences_mac.mm
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@ -154,10 +154,11 @@ void SystemPreferences::PostNotification(const std::string& name,
}
int SystemPreferences::SubscribeNotification(
const std::string& name,
v8::Local<v8::Value> maybe_name,
const NotificationCallback& callback) {
return DoSubscribeNotification(
name, callback, NotificationCenterKind::kNSDistributedNotificationCenter);
maybe_name, callback,
NotificationCenterKind::kNSDistributedNotificationCenter);
}
void SystemPreferences::UnsubscribeNotification(int request_id) {
@ -174,9 +175,9 @@ void SystemPreferences::PostLocalNotification(const std::string& name,
}
int SystemPreferences::SubscribeLocalNotification(
const std::string& name,
v8::Local<v8::Value> maybe_name,
const NotificationCallback& callback) {
return DoSubscribeNotification(name, callback,
return DoSubscribeNotification(maybe_name, callback,
NotificationCenterKind::kNSNotificationCenter);
}
@ -196,10 +197,11 @@ void SystemPreferences::PostWorkspaceNotification(
}
int SystemPreferences::SubscribeWorkspaceNotification(
const std::string& name,
v8::Local<v8::Value> maybe_name,
const NotificationCallback& callback) {
return DoSubscribeNotification(
name, callback, NotificationCenterKind::kNSWorkspaceNotificationCenter);
maybe_name, callback,
NotificationCenterKind::kNSWorkspaceNotificationCenter);
}
void SystemPreferences::UnsubscribeWorkspaceNotification(int request_id) {
@ -208,14 +210,25 @@ void SystemPreferences::UnsubscribeWorkspaceNotification(int request_id) {
}
int SystemPreferences::DoSubscribeNotification(
const std::string& name,
v8::Local<v8::Value> maybe_name,
const NotificationCallback& callback,
NotificationCenterKind kind) {
int request_id = g_next_id++;
__block NotificationCallback copied_callback = callback;
v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
std::string name_str;
if (!(maybe_name->IsNull() ||
gin::ConvertFromV8(isolate, maybe_name, &name_str))) {
isolate->ThrowException(v8::Exception::Error(
gin::StringToV8(isolate, "Must pass null or a string")));
return -1;
}
auto* name = maybe_name->IsNull() ? nil : base::SysUTF8ToNSString(name_str);
g_id_map[request_id] = [GetNotificationCenter(kind)
addObserverForName:base::SysUTF8ToNSString(name)
addObserverForName:name
object:nil
queue:nil
usingBlock:^(NSNotification* notification) {