debug-server-next
Version:
Dev server for hippy-core.
67 lines (66 loc) • 2.33 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.
import { getRegisteredActionExtensions } from './ActionRegistration.js';
import { Context } from './Context.js';
let actionRegistryInstance;
export class ActionRegistry {
_actionsById;
constructor() {
this._actionsById = new Map();
this._registerActions();
}
static instance(opts = { forceNew: null }) {
const { forceNew } = opts;
if (!actionRegistryInstance || forceNew) {
actionRegistryInstance = new ActionRegistry();
}
return actionRegistryInstance;
}
static removeInstance() {
actionRegistryInstance = undefined;
}
_registerActions() {
for (const action of getRegisteredActionExtensions()) {
this._actionsById.set(action.id(), action);
if (!action.canInstantiate()) {
action.setEnabled(false);
}
}
}
availableActions() {
return this.applicableActions([...this._actionsById.keys()], Context.instance());
}
actions() {
return [...this._actionsById.values()];
}
applicableActions(actionIds, context) {
const applicableActions = [];
for (const actionId of actionIds) {
const action = this._actionsById.get(actionId);
if (action && action.enabled()) {
if (isActionApplicableToContextTypes(action, context.flavors())) {
applicableActions.push(action);
}
}
}
return applicableActions;
function isActionApplicableToContextTypes(action, currentContextTypes) {
const contextTypes = action.contextTypes();
if (!contextTypes) {
return true;
}
for (let i = 0; i < contextTypes.length; ++i) {
const contextType = contextTypes[i];
const isMatching = Boolean(contextType) && currentContextTypes.has(contextType);
if (isMatching) {
return true;
}
}
return false;
}
}
action(actionId) {
return this._actionsById.get(actionId) || null;
}
}