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-rw-r--r--ext/js/background/backend.js71
1 files changed, 55 insertions, 16 deletions
diff --git a/ext/js/background/backend.js b/ext/js/background/backend.js
index 38d82496..db7a3c0f 100644
--- a/ext/js/background/backend.js
+++ b/ext/js/background/backend.js
@@ -144,10 +144,13 @@ export class Backend {
this._permissions = null;
/** @type {PermissionsUtil} */
this._permissionsUtil = new PermissionsUtil();
+ /** @type {Map<string, (() => void)[]>} */
+ this._applicationReadyHandlers = new Map();
/* eslint-disable no-multi-spaces */
/** @type {import('api').ApiMap} */
this._apiMap = createApiMap([
+ ['applicationReady', this._onApiApplicationReady.bind(this)],
['requestBackendReadySignal', this._onApiRequestBackendReadySignal.bind(this)],
['optionsGet', this._onApiOptionsGet.bind(this)],
['optionsGetFull', this._onApiOptionsGetFull.bind(this)],
@@ -425,6 +428,21 @@ export class Backend {
// Message handlers
+ /** @type {import('api').ApiHandler<'applicationReady'>} */
+ _onApiApplicationReady(_params, sender) {
+ const {tab, frameId} = sender;
+ if (!tab || typeof frameId !== 'number') { return; }
+ const {id} = tab;
+ if (typeof id !== 'number') { return; }
+ const key = `${id}:${frameId}`;
+ const handlers = this._applicationReadyHandlers.get(key);
+ if (typeof handlers === 'undefined') { return; }
+ for (const handler of handlers) {
+ handler();
+ }
+ this._applicationReadyHandlers.delete(key);
+ }
+
/** @type {import('api').ApiHandler<'requestBackendReadySignal'>} */
_onApiRequestBackendReadySignal(_params, sender) {
// tab ID isn't set in background (e.g. browser_action)
@@ -1806,18 +1824,8 @@ export class Backend {
return new Promise((resolve, reject) => {
/** @type {?import('core').Timeout} */
let timer = null;
- /** @type {?import('extension').ChromeRuntimeOnMessageCallback<import('application').ApiMessageAny>} */
- let onMessage = (message, sender) => {
- if (
- !sender.tab ||
- sender.tab.id !== tabId ||
- sender.frameId !== frameId ||
- !(typeof message === 'object' && message !== null) ||
- message.action !== 'applicationReady'
- ) {
- return;
- }
+ const readyHandler = () => {
cleanup();
resolve();
};
@@ -1826,13 +1834,10 @@ export class Backend {
clearTimeout(timer);
timer = null;
}
- if (onMessage !== null) {
- chrome.runtime.onMessage.removeListener(onMessage);
- onMessage = null;
- }
+ this._removeApplicationReadyHandler(tabId, frameId, readyHandler);
};
- chrome.runtime.onMessage.addListener(onMessage);
+ this._addApplicationReadyHandler(tabId, frameId, readyHandler);
this._sendMessageTabPromise(tabId, {action: 'applicationIsReady'}, {frameId})
.then(
@@ -2686,4 +2691,38 @@ export class Backend {
return defaultValue;
}
}
+
+ /**
+ * @param {number} tabId
+ * @param {number} frameId
+ * @param {() => void} handler
+ */
+ _addApplicationReadyHandler(tabId, frameId, handler) {
+ const key = `${tabId}:${frameId}`;
+ let handlers = this._applicationReadyHandlers.get(key);
+ if (typeof handlers === 'undefined') {
+ handlers = [];
+ this._applicationReadyHandlers.set(key, handlers);
+ }
+ handlers.push(handler);
+ }
+
+ /**
+ * @param {number} tabId
+ * @param {number} frameId
+ * @param {() => void} handler
+ * @returns {boolean}
+ */
+ _removeApplicationReadyHandler(tabId, frameId, handler) {
+ const key = `${tabId}:${frameId}`;
+ const handlers = this._applicationReadyHandlers.get(key);
+ if (typeof handlers === 'undefined') { return false; }
+ const index = handlers.indexOf(handler);
+ if (index < 0) { return false; }
+ handlers.splice(index, 1);
+ if (handlers.length === 0) {
+ this._applicationReadyHandlers.delete(key);
+ }
+ return true;
+ }
}