/// <reference path="../../../globals.d.ts" />
/// <reference path="../disposable/disposable.d.ts" />
/// <reference path="./messagechannel.d.ts" />
/// <reference path="../log/log.d.ts" />

declare module goog.messaging {

    class AbstractChannel extends AbstractChannel__Class { }
    /** Fake class which should be extended to avoid inheriting static properties */
    class AbstractChannel__Class extends goog.Disposable__Class implements goog.messaging.MessageChannel  { 
    
            /**
             * Creates an abstract message channel.
             *
             * @constructor
             * @extends {goog.Disposable}
             * @implements {goog.messaging.MessageChannel}
             */
            constructor();
    
            /**
             * Logger for this class.
             * @type {goog.log.Logger}
             * @protected
             */
            logger: goog.log.Logger;
    
            /**
             * Delivers a message to the appropriate service. This is meant to be called by
             * subclasses when they receive messages.
             *
             * This method takes into account both explicitly-registered and default
             * services, as well as making sure that JSON payloads are decoded when
             * necessary. If the subclass is capable of passing objects as payloads, those
             * objects can be passed in to this method directly. Otherwise, the (potentially
             * JSON-encoded) strings should be passed in.
             *
             * @param {string} serviceName The name of the service receiving the message.
             * @param {string|!Object} payload The contents of the message.
             * @protected
             */
            deliver(serviceName: string, payload: string|Object): void;
    
            /**
             * Find the service object for a given service name. If there's no service
             * explicitly registered, but there is a default service, a service object is
             * constructed for it.
             *
             * @param {string} serviceName The name of the service receiving the message.
             * @param {string|!Object} payload The contents of the message.
             * @return {?{callback: function((string|!Object)), objectPayload: boolean}} The
             *     service object for the given service, or null if none was found.
             * @protected
             */
            getService(serviceName: string, payload: string|Object): { callback: { (_0: string|Object): any /*missing*/ }; objectPayload: boolean };
    
            /**
             * Converts the message payload into the format expected by the registered
             * service (either JSON or string).
             *
             * @param {string} serviceName The name of the service receiving the message.
             * @param {string|!Object} payload The contents of the message.
             * @param {boolean} objectPayload Whether the service expects an object or a
             *     plain string.
             * @return {string|Object} The payload in the format expected by the service, or
             *     null if something went wrong.
             * @protected
             */
            decodePayload(serviceName: string, payload: string|Object, objectPayload: boolean): string|Object;
    
            /**
             * Initiates the channel connection. When this method is called, all the
             * information needed to connect the channel has to be available.
             *
             * Implementers should only require this method to be called if the channel
             * needs to be configured in some way between when it's created and when it
             * becomes active. Otherwise, the channel should be immediately active and this
             * method should do nothing but immediately call opt_connectCb.
             *
             * @param {Function=} opt_connectCb Called when the channel has been connected
             *     and is ready to use.
             */
            connect(opt_connectCb?: Function): void;
    
            /**
             * Gets whether the channel is connected.
             *
             * If {@link #connect} is not required for this class, this should always return
             * true. Otherwise, this should return true by the time the callback passed to
             * {@link #connect} has been called and always after that.
             *
             * @return {boolean} Whether the channel is connected.
             */
            isConnected(): boolean;
    
            /**
             * Registers a service to be called when a message is received.
             *
             * Implementers shouldn't impose any restrictions on the service names that may
             * be registered. If some services are needed as control codes,
             * {@link goog.messaging.MultiMessageChannel} can be used to safely split the
             * channel into "public" and "control" virtual channels.
             *
             * @param {string} serviceName The name of the service.
             * @param {function((string|!Object))} callback The callback to process the
             *     incoming messages. Passed the payload. If opt_objectPayload is set, the
             *     payload is decoded and passed as an object.
             * @param {boolean=} opt_objectPayload If true, incoming messages for this
             *     service are expected to contain an object, and will be deserialized from
             *     a string automatically if necessary. It's the responsibility of
             *     implementors of this class to perform the deserialization.
             */
            registerService(serviceName: string, callback: { (_0: string|Object): any /*missing*/ }, opt_objectPayload?: boolean): void;
    
            /**
             * Registers a service to be called when a message is received that doesn't
             * match any other services.
             *
             * @param {function(string, (string|!Object))} callback The callback to process
             *     the incoming messages. Passed the service name and the payload. Since
             *     some channels can pass objects natively, the payload may be either an
             *     object or a string.
             */
            registerDefaultService(callback: { (_0: string, _1: string|Object): any /*missing*/ }): void;
    
            /**
             * Sends a message over the channel.
             *
             * @param {string} serviceName The name of the service this message should be
             *     delivered to.
             * @param {string|!Object} payload The value of the message. If this is an
             *     Object, it is serialized to a string before sending if necessary. It's
             *     the responsibility of implementors of this class to perform the
             *     serialization.
             */
            send(serviceName: string, payload: string|Object): void;
    } 
    
}