From 5483a3f151d58d935a53f89653665e1dde76966e Mon Sep 17 00:00:00 2001 From: Svein-Tore Griff With Date: Wed, 11 Feb 2015 18:02:58 +0100 Subject: [PATCH] Remove event dispatcher --- js/h5p-event-dispatcher.js | 152 ------------------------------------- 1 file changed, 152 deletions(-) delete mode 100644 js/h5p-event-dispatcher.js diff --git a/js/h5p-event-dispatcher.js b/js/h5p-event-dispatcher.js deleted file mode 100644 index fb7f5ef..0000000 --- a/js/h5p-event-dispatcher.js +++ /dev/null @@ -1,152 +0,0 @@ -/** @namespace H5P */ -var H5P = H5P || {}; - -H5P.EventDispatcher = (function () { - - /** - * The base of the event system. - * Inherit this class if you want your H5P to dispatch events. - * @class - */ - function EventDispatcher() { - var self = this; - - /** - * Keep track of events and listeners for each event. - * @private - * @type {Object} - */ - var events = {}; - - /** - * Add new event listener. - * - * @public - * @throws {TypeError} listener must be a function - * @param {String} type Event type - * @param {Function} listener Event listener - */ - self.on = function (type, listener) { - if (!(listener instanceof Function)) { - throw TypeError('listener must be a function'); - } - - // Trigger event before adding to avoid recursion - self.trigger('newListener', type, listener); - - if (!events[type]) { - // First - events[type] = [listener]; - } - else { - // Append - events[type].push(listener); - } - }; - - /** - * Add new event listener that will be fired only once. - * - * @public - * @throws {TypeError} listener must be a function - * @param {String} type Event type - * @param {Function} listener Event listener - */ - self.once = function (type, listener) { - if (!(listener instanceof Function)) { - throw TypeError('listener must be a function'); - } - - var once = function () { - self.off(type, once); - listener.apply(self, arguments); - }; - - self.on(type, once); - }; - - /** - * Remove event listener. - * If no listener is specified, all listeners will be removed. - * - * @public - * @throws {TypeError} listener must be a function - * @param {String} type Event type - * @param {Function} [listener] Event listener - */ - self.off = function (type, listener) { - if (listener !== undefined && !(listener instanceof Function)) { - throw TypeError('listener must be a function'); - } - - if (events[type] === undefined) { - return; - } - - if (listener === undefined) { - // Remove all listeners - delete events[type]; - self.trigger('removeListener', type); - return; - } - - // Find specific listener - for (var i = 0; i < events[type].length; i++) { - if (events[type][i] === listener) { - events[type].unshift(i, 1); - self.trigger('removeListener', type, listener); - break; - } - } - - // Clean up empty arrays - if (!events[type].length) { - delete events[type]; - } - }; - - /** - * Creates a copy of the arguments list. Skips the given number of arguments. - * - * @private - * @param {Array} args List of arguments - * @param {Number} skip Number of arguments to skip - * @param {Array} Copy og arguments list - */ - var getArgs = function (args, skip) { - var left = []; - for (var i = skip; i < args.length; i++) { - left.push(args[i]); - } - return left; - }; - - /** - * Dispatch event. - * - * @public - * @param {String} type Event type - * @param {...*} args - */ - self.trigger = function (type) { - if (self.debug !== undefined) { - // Class has debug enabled. Log events. - console.log(self.debug + ' - Firing event "' + type + '", ' + (events[type] === undefined ? 0 : events[type].length) + ' listeners.', getArgs(arguments, 1)); - } - - if (events[type] === undefined) { - return; - } - - // Copy all arguments except the first - var args = getArgs(arguments, 1); - - // Call all listeners - for (var i = 0; i < events[type].length; i++) { - events[type][i].apply(self, args); - } - }; - } - - return EventDispatcher; -})();