| // Copyright 2011 The Closure Library Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| /** |
| * @fileoverview An interface for classes that connect a collection of HTML5 |
| * message-passing entities ({@link MessagePort}s, {@link Worker}s, and |
| * {@link Window}s) and allow them to seamlessly communicate with one another. |
| * |
| * Conceptually, a PortNetwork is a collection of JS contexts, such as pages (in |
| * or outside of iframes) or web workers. Each context has a unique name, and |
| * each one can communicate with any of the others in the same network. This |
| * communication takes place through a {@link goog.messaging.PortChannel} that |
| * is retrieved via {#link goog.messaging.PortNetwork#dial}. |
| * |
| * One context (usually the main page) has a |
| * {@link goog.messaging.PortOperator}, which is in charge of connecting each |
| * context to each other context. All other contexts have |
| * {@link goog.messaging.PortCaller}s which connect to the operator. |
| * |
| */ |
| |
| goog.provide('goog.messaging.PortNetwork'); |
| |
| |
| |
| /** |
| * @interface |
| */ |
| goog.messaging.PortNetwork = function() {}; |
| |
| |
| /** |
| * Returns a message channel that communicates with the named context. If no |
| * such port exists, an error will either be thrown immediately or after a round |
| * trip with the operator, depending on whether this pool is the operator or a |
| * caller. |
| * |
| * If context A calls dial('B') and context B calls dial('A'), the two |
| * ports returned will be connected to one another. |
| * |
| * @param {string} name The name of the context to get. |
| * @return {goog.messaging.MessageChannel} The channel communicating with the |
| * given context. This is either a {@link goog.messaging.PortChannel} or a |
| * decorator around a PortChannel, so it's safe to send {@link MessagePorts} |
| * across it. This will be disposed along with the PortNetwork. |
| */ |
| goog.messaging.PortNetwork.prototype.dial = function(name) {}; |
| |
| |
| /** |
| * The name of the service exported by the operator for creating a connection |
| * between two callers. |
| * |
| * @type {string} |
| * @const |
| */ |
| goog.messaging.PortNetwork.REQUEST_CONNECTION_SERVICE = 'requestConnection'; |
| |
| |
| /** |
| * The name of the service exported by the callers for adding a connection to |
| * another context. |
| * |
| * @type {string} |
| * @const |
| */ |
| goog.messaging.PortNetwork.GRANT_CONNECTION_SERVICE = 'grantConnection'; |