beaverjs/dist/BackgroundEventHandler.js

An abstraction around WebExtension messaging

import { BaseEventHandler } from './BaseEventHandler';
import { Destination } from './destination';
import { listen } from './listeners';
export class BackgroundEventHandler extends BaseEventHandler {
    constructor(query = {}) {
        super();
        this.query = query;
    }
    emitContent(key, data) {
        return this.emit(key, data, Destination.Content);
    }
    emitContext(key, data) {
        return this.emit(key, data, Destination.Context);
    }
    sendEvent(serialized, destination) {
        destination !== null && destination !== void 0 ? destination : (destination = Destination.Passthrough);
        sendToAllTabs(this.query, { destination, data: serialized });
    }
    serialize(type, data) {
        return { data, event: type };
    }
    deserialize(serialized) {
        return { data: serialized.data, type: serialized.event };
    }
    setup() {
        listen({
            thisActor: 'background',
            listenFrom: new Set(['content']),
            onMessage: (msg, sender) => {
                this.handleSerialized(msg.data, sender);
            },
        });
    }
}
function sendToAllTabs(query, msg) {
    return browser.tabs.query(query).then(tabs => tabs.forEach(tab => { var _a; return browser.tabs.sendMessage((_a = tab.id) !== null && _a !== void 0 ? _a : -1, msg); }));
}
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