asu-event-bus-iframe

This is a cross domain based on modern browsers processing, between main window and iframes on postMessage.

The main window may start the EventAgent to proxy the messages from iframes, and the iframes using EventBus to listen or publish the message to another.

interface

EventAgent

listen the event for MainWindow

const eventAgent = new EventAgent();
const evetName = "say-hello"
const callback = (eventName, payloa, source) => {
    // your code.
}
eventAgent.on(eventName, callback);

remove the listener

const eventAgent = new EventAgent();
const eventName = "say-hello";
eventAgent.off(eventName);

publish message to iframes.

const eventAgent = new EventAgent();
const eventName = "say-hi";
const payload = "I'm Bill.";
eventAgent.publish(eventName, payload);

publish to mail window itself.

const eventAgent = new EventAgent();
const eventName = "say-hello";
const payload = "I'm Bill.";
eventAgent.publishLocal(eventName, payload);

EventBus

listen the event

const eventBus = new EventBus();
const eventName = "say-hi";
const callback = (payload) => {
    console.log(payload);
};

// attach a callback to an event
eventBus.on(eventName, callback);

// attach a callback to an event,
// But execute callback once.
eventBus.once(eventName, callback);

// attach a callback to an event.
// This callback will be executed will not be executed
const num = 10;
eventBus.exactly(10, eventName, callback);

remove the listen.

const eventBus = new EventBus();
const eventName = "say-hi";
eventBus.off(eventName);

eventBus.detach(eventName, callback);
eventBUs.detachAll();

publish the event

const eventBus = new EventBus();
const eventName = "say-hi";
eventBus.publish(eventName, "I'm Peter");