yzt
2023-05-26 de4278af2fd46705a40bac58ec01122db6b7f3d7
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define(["./Evented"], function(Evented){
 
    // module:
    //      dojo/topic
 
    var hub = new Evented;
    return {
        // summary:
        //      Pubsub hub.
        // example:
        //      |   topic.subscribe("some/topic", function(event){
        //      |   ... do something with event
        //      |   });
        //      |   topic.publish("some/topic", {name:"some event", ...});
 
        publish: function(topic, event){
            // summary:
            //      Publishes a message to a topic on the pub/sub hub. All arguments after
            //      the first will be passed to the subscribers, so any number of arguments
            //      can be provided (not just event).
            // topic: String
            //      The name of the topic to publish to
            // event: Object
            //      An event to distribute to the topic listeners
            return hub.emit.apply(hub, arguments);
        },
 
        subscribe: function(topic, listener){
            // summary:
            //      Subscribes to a topic on the pub/sub hub
            // topic: String
            //      The topic to subscribe to
            // listener: Function
            //      A function to call when a message is published to the given topic
            return hub.on.apply(hub, arguments);
        }
    };
});