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author | jahoti <jahoti@tilde.team> | 2021-08-17 00:00:00 +0000 |
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committer | jahoti <jahoti@tilde.team> | 2021-08-17 00:00:00 +0000 |
commit | 5b7c9edbbb46074436b819435feb80ebbd9ab4ad (patch) | |
tree | cfa7ef034d99dc1957ce3b146256d766a6a8426d /common/observable.js | |
parent | 7796e55405e2c27f053122bdec25ffc06df92b4f (diff) | |
parent | 443bc095a72949adb4a007c9a19a43da7dd8843d (diff) | |
download | browser-extension-5b7c9edbbb46074436b819435feb80ebbd9ab4ad.tar.gz browser-extension-5b7c9edbbb46074436b819435feb80ebbd9ab4ad.zip |
Merge remote-tracking branch 'origin/master' into jahoti
Diffstat (limited to 'common/observable.js')
-rw-r--r-- | common/observable.js | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/common/observable.js b/common/observable.js new file mode 100644 index 0000000..1fb0b0a --- /dev/null +++ b/common/observable.js @@ -0,0 +1,36 @@ +/** + * part of Hachette + * Facilitate listening to events + * + * Copyright (C) 2021 Wojtek Kosior + * Redistribution terms are gathered in the `copyright' file. + */ + +function make() +{ + return new Set(); +} + +function subscribe(observable, cb) +{ + observable.add(cb); +} + +function unsubscribe(observable, cb) +{ + observable.delete(cb); +} + +function broadcast(observable, event) +{ + for (const callback of observable) + callback(event); +} + +const observables = {make, subscribe, unsubscribe, broadcast}; + +/* + * EXPORTS_START + * EXPORT observables + * EXPORTS_END + */ |