alex/yomichan
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use duck typing for event listener

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This commit is contained in:
siikamiika 2020-04-04 16:59:17 +03:00
parent 067c26982e
commit 123e725049
1 changed files with 29 additions and 26 deletions
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55
ext/mixed/js/core.js
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@ -325,35 +325,38 @@ const yomichan = (() => {
reject = _reject;
});
if (eventHandler === chrome.runtime.onMessage) {
const runtimeMessageCallback = ({action, params}, sender, sendResponse) => {
let timeoutId = null;
if (timeout !== null) {
timeoutId = window.setTimeout(() => {
timeoutId = null;
eventHandler.removeListener(runtimeMessageCallback);
reject(new Error(`Listener timed out in ${timeout} ms`));
}, timeout);
}
const cleanupResolve = (value) => {
if (timeoutId !== null) {
window.clearTimeout(timeoutId);
timeoutId = null;
}
eventHandler.removeListener(runtimeMessageCallback);
sendResponse();
resolve(value);
};
userCallback({action, params}, {resolve: cleanupResolve, sender});
};
eventHandler.addListener(runtimeMessageCallback);
} else {
if (
typeof eventHandler.addListener === 'undefined' ||
typeof eventHandler.removeListener === 'undefined'
) {
throw new Error('Event handler type not supported');
}
const runtimeMessageCallback = ({action, params}, sender, sendResponse) => {
let timeoutId = null;
if (timeout !== null) {
timeoutId = window.setTimeout(() => {
timeoutId = null;
eventHandler.removeListener(runtimeMessageCallback);
reject(new Error(`Listener timed out in ${timeout} ms`));
}, timeout);
}
const cleanupResolve = (value) => {
if (timeoutId !== null) {
window.clearTimeout(timeoutId);
timeoutId = null;
}
eventHandler.removeListener(runtimeMessageCallback);
sendResponse();
resolve(value);
};
userCallback({action, params}, {resolve: cleanupResolve, sender});
};
eventHandler.addListener(runtimeMessageCallback);
return listenerPromise;
}