56 lines
1.7 KiB
JavaScript
56 lines
1.7 KiB
JavaScript
/*!
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* jQuery Tiny Pub/Sub - v0.6 - 1/10/2011
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* http://benalman.com/
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*
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* Copyright (c) 2010 "Cowboy" Ben Alman
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* Dual licensed under the MIT and GPL licenses.
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* http://benalman.com/about/license/
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*/
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const $ = require('jquery')
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// Create a "dummy" jQuery object on which to bind, unbind and trigger event
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// handlers. Note that $({}) works in jQuery 1.4.3+.
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var o = $({}), subscribe, unsubscribe, publish;
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// Subscribe to a topic. Works just like bind, except the passed handler
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// is wrapped in a function so that the event object can be stripped out.
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// Even though the event object might be useful, it is unnecessary and
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// will only complicate things in the future should the user decide to move
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// to a non-$.event-based pub/sub implementation.
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$.subscribe = subscribe = function( topic, fn ) {
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if ($.isPlainObject(topic)) {
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return $.each(topic, function(topic, fn) {
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subscribe(topic, fn);
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});
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}
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// Call fn, stripping out the 1st argument (the event object).
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function wrapper() {
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return fn.apply( this, Array.prototype.slice.call( arguments, 1 ) );
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}
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// Add .guid property to function to allow it to be easily unbound. Note
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// that $.guid is new in jQuery 1.4+, and $.event.guid was used before.
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wrapper.guid = fn.guid = fn.guid || $.guid++;
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// Bind the handler.
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o.bind( topic, wrapper );
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};
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// Unsubscribe from a topic. Works exactly like unbind.
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$.unsubscribe = unsubscribe = function() {
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o.unbind.apply( o, arguments );
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};
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// Publish a topic. Works exactly like trigger.
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$.publish = publish = function() {
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o.trigger.apply( o, arguments );
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};
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module.exports = {
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subscribe: subscribe,
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unsubscribe: unsubscribe,
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publish: publish
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};
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