Simple timed event manager

timed_event_manager.js

  /**
   * Handles set up / clean up of multiple named event timers
   * @constructor
   */
  var TimedEventManager = function () {
    this.timers = {};
  };

  TimedEventManager.prototype = {

    /**
     * Creates a new timer
     * @param {String} name the name of the timer
     * @param {Number} duration the duration to wait before the timer is fired again
     * @param {Function} callback the method to be run at the specified interval
     */
    setTimer: function( name, duration, callback ) {
      if ( !this.timers.hasOwnProperty(name) ) {
        this.timers[name] = setInterval( callback, duration );
      }
    },

    /**
     * Gets an id that references the requested timer
     * @param {String} name the name of the timer
     * @return {Number} the id of the requested timer
     */
    getTimer: function( name ) {
      return this.timers[name];
    },

    /**
     * Gets a list of all active timers
     * @return {Object} hash of all active timers
     */
    getTimers: function () {
      return this.timers;
    },

    /**
     * Stops and deletes a specified timer
     * @param {String} the name of the timer to stop and delete
     */
    deleteTimer: function( name ) {
      if ( this.timers.hasOwnProperty(name) ) {
        clearInterval( this.timers[name] );
        delete this.timers[name];
      }
    },

    /**
     * Stops and deletes all active timers
     */
    deleteTimers: function () {
      for( var timer in this.timers ) {
        if ( this.timers.hasOwnProperty(timer) ) {
          this.deleteTimer( timer );
        }
      }
    }

  };