debug-server-next
Version:
Dev server for hippy-core.
84 lines (83 loc) • 2.95 kB
JavaScript
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/* eslint-disable rulesdir/no_underscored_properties */
import * as Common from '../../core/common/common.js';
let contextInstance;
export class Context {
_flavors;
_eventDispatchers;
constructor() {
this._flavors = new Map();
this._eventDispatchers = new Map();
}
static instance(opts = { forceNew: null }) {
const { forceNew } = opts;
if (!contextInstance || forceNew) {
contextInstance = new Context();
}
return contextInstance;
}
setFlavor(flavorType, flavorValue) {
const value = this._flavors.get(flavorType) || null;
if (value === flavorValue) {
return;
}
if (flavorValue) {
this._flavors.set(flavorType, flavorValue);
}
else {
this._flavors.delete(flavorType);
}
this._dispatchFlavorChange(flavorType, flavorValue);
}
_dispatchFlavorChange(flavorType, flavorValue) {
for (const extension of getRegisteredListeners()) {
if (extension.contextTypes().includes(flavorType)) {
extension.loadListener().then(instance => instance.flavorChanged(flavorValue));
}
}
const dispatcher = this._eventDispatchers.get(flavorType);
if (!dispatcher) {
return;
}
dispatcher.dispatchEventToListeners(Events.FlavorChanged, flavorValue);
}
addFlavorChangeListener(flavorType, listener, thisObject) {
let dispatcher = this._eventDispatchers.get(flavorType);
if (!dispatcher) {
dispatcher = new Common.ObjectWrapper.ObjectWrapper();
this._eventDispatchers.set(flavorType, dispatcher);
}
dispatcher.addEventListener(Events.FlavorChanged, listener, thisObject);
}
removeFlavorChangeListener(flavorType, listener, thisObject) {
const dispatcher = this._eventDispatchers.get(flavorType);
if (!dispatcher) {
return;
}
dispatcher.removeEventListener(Events.FlavorChanged, listener, thisObject);
if (!dispatcher.hasEventListeners(Events.FlavorChanged)) {
this._eventDispatchers.delete(flavorType);
}
}
flavor(flavorType) {
return this._flavors.get(flavorType) || null;
}
flavors() {
return new Set(this._flavors.keys());
}
}
// TODO(crbug.com/1167717): Make this a const enum again
// eslint-disable-next-line rulesdir/const_enum
var Events;
(function (Events) {
Events["FlavorChanged"] = "FlavorChanged";
})(Events || (Events = {}));
const registeredListeners = [];
export function registerListener(registration) {
registeredListeners.push(registration);
}
function getRegisteredListeners() {
return registeredListeners;
}