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fatihacet/pubsub-simple.js

Created October 15, 2011 22:02
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Revisions

  1. fatihacet revised this gist Aug 26, 2012. No changes.
  2. fatihacet created this gist Oct 15, 2011.
    45 changes: 45 additions & 0 deletions pubsub-simple.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,45 @@
    var pubsub = {};
    (function(q) {
    var topics = {}, subUid = -1;
    q.subscribe = function(topic, func) {
    if (!topics[topic]) {
    topics[topic] = [];
    }
    var token = (++subUid).toString();
    topics[topic].push({
    token: token,
    func: func
    });
    return token;
    };

    q.publish = function(topic, args) {
    if (!topics[topic]) {
    return false;
    }
    setTimeout(function() {
    var subscribers = topics[topic],
    len = subscribers ? subscribers.length : 0;

    while (len--) {
    subscribers[len].func(topic, args);
    }
    }, 0);
    return true;

    };

    q.unsubscribe = function(token) {
    for (var m in topics) {
    if (topics[m]) {
    for (var i = 0, j = topics[m].length; i < j; i++) {
    if (topics[m][i].token === token) {
    topics[m].splice(i, 1);
    return token;
    }
    }
    }
    }
    return false;
    };
    }(pubsub));