consul/ui-v2/app/utils/dom/event-source/index.js

82 lines
2.9 KiB
JavaScript

import ObjectProxy from '@ember/object/proxy';
import ArrayProxy from '@ember/array/proxy';
import { Promise } from 'rsvp';
import createListeners from 'consul-ui/utils/dom/create-listeners';
import EventTarget from 'consul-ui/utils/dom/event-target/rsvp';
import cacheFactory from 'consul-ui/utils/dom/event-source/cache';
import proxyFactory from 'consul-ui/utils/dom/event-source/proxy';
import firstResolverFactory from 'consul-ui/utils/dom/event-source/resolver';
import CallableEventSourceFactory from 'consul-ui/utils/dom/event-source/callable';
import ReopenableEventSourceFactory from 'consul-ui/utils/dom/event-source/reopenable';
import BlockingEventSourceFactory from 'consul-ui/utils/dom/event-source/blocking';
import StorageEventSourceFactory from 'consul-ui/utils/dom/event-source/storage';
// All The EventSource-i
export const CallableEventSource = CallableEventSourceFactory(EventTarget, Promise);
export const ReopenableEventSource = ReopenableEventSourceFactory(CallableEventSource);
export const BlockingEventSource = BlockingEventSourceFactory(ReopenableEventSource);
export const StorageEventSource = StorageEventSourceFactory(EventTarget, Promise);
// various utils
export const proxy = proxyFactory(ObjectProxy, ArrayProxy, createListeners);
export const resolve = firstResolverFactory(Promise);
export const source = function(source) {
// create API needed for conventional promise blocked, loading, Routes
// i.e. resolve/reject on first response
return resolve(source, createListeners()).then(function(data) {
// create API needed for conventional DD/computed and Controllers
return proxy(source, data);
});
};
export const cache = cacheFactory(source, BlockingEventSource, Promise);
const errorEvent = function(e) {
return new ErrorEvent('error', {
error: e,
message: e.message,
});
};
export const fromPromise = function(promise) {
return new CallableEventSource(function(configuration) {
const dispatch = this.dispatchEvent.bind(this);
const close = () => {
this.close();
};
return promise
.then(function(result) {
close();
dispatch({ type: 'message', data: result });
})
.catch(function(e) {
close();
dispatch(errorEvent(e));
});
});
};
export const toPromise = function(target, cb, eventName = 'message', errorName = 'error') {
return new Promise(function(resolve, reject) {
// TODO: e.target.data
const message = function(e) {
resolve(e.data);
};
const error = function(e) {
reject(e.error);
};
const remove = function() {
if (typeof target.close === 'function') {
target.close();
}
target.removeEventListener(eventName, message);
target.removeEventListener(errorName, error);
};
target.addEventListener(eventName, message);
target.addEventListener(errorName, error);
cb(remove);
});
};