/**
 * Dynamic Rating stars
 * @copyright 2006 Beau D. Scott http://beauscott.com
 * @
 */

var Stars = null;

try {
	var Stars = Class.create();
	Stars.prototype = {
		/**
		 * Mouse X position
		 * @var {Number} options
		 */
		_x: 0,
		/**
		 * Mouse X position
		 * @var {Number} options
		 */
		_y: 0,
		/**
		 * Constructor
		 * @param {Object} options
		 */
		initialize: function(options)
		{
	
			/**
			 * Initialized?
			 * @var (Boolean)
			 */
			this._initialized = false;
	
			/**
			 * Base option values
			 * @var (Object)
			 */
			this.options = {
				bindField: null,			// Form Field to bind the value to
				maxRating: 5,				// Maximum rating, determines number of stars
				container: null,			// Container of stars
				imagePath: 'images/',		// Path to star images
				callback: null,				// Callback function, fires when the stars are clicked
				actionURL: null,			// URL to call when clicked. The rating will be appended to the end of the URL (eg: /rate.php?id=5&rating=)
				value: 0,					// Initial Value
				locked: false
			};
			Object.extend(this.options, options);
			this.locked = this.options.locked ? true : false;
			/**
			 * Image sources for hover and user-set state ratings
			 */
			this._starSrc = {
				empty: this.options.imagePath + "star-out.png",
				full: this.options.imagePath + "star.png",
				half: this.options.imagePath + "star-half.png"
			};
			/**
			 * Preload images
			 */
			for(var x in this._starSrc)
			{
				var y = new Image();
				y.src = this._starSrc[x];
			}
	
			document.getElem
	
			/**
			 * Images to show for pre-set values, changes when hovered, if not locked.
			 */
			this._setStarSrc = {
				empty: this.options.imagePath + "star-p-out.png",
				full: this.options.imagePath + "star-p.png",
				half: this.options.imagePath + "star-p-half.png"
			};
	
			/**
			 * Preload images
			 */
			for(var x in this._setStarSrc)
			{
				var y = new Image();
				y.src = this._setStarSrc[x];
			}
	
			this.value = -1;
			this.stars = [];
			this._clicked = false;
	
	
			if(this.options.container)
			{
				this._container = $(this.options.container);
				this.id = this._container.id;
				
			}
			else
			{
				this.id = 'starsContainer.' + Math.random(0, 100000);
				document.write('<span class="stars" id="' + this.id + '"></span>');
				this._container = $(this.id);
			}
			this._display();
			this.setValue(this.options.value);
	
			this._initialized = true;
		},
		_display: function()
		{
			for(var i = 0; i < this.options.maxRating; i++)
			{
				var star = new Image();
				star.src = this.locked ? this._starSrc.empty : this._setStarSrc.empty;
				if(!this.locked) {
				star.style.cursor = 'pointer';
				}
				if(!this.locked) { star.title = 'Hodnotenie: ' + (i + 1); } else { this._container.title = 'Hodnotenie: ' + this.options.value; }
				!this.locked && Event.observe(star, 'mouseover', this._starHover.bind(this));
				!this.locked && Event.observe(star, 'click', this._starClick.bind(this));
				!this.locked && Event.observe(star, 'mouseout', this._starClear.bind(this));
				this.stars.push(star);
				this._container.appendChild(star);
			}
		},
		_starHover: function(e)
		{
			if(this.locked) return;
			if(!e) e = window.event;
			var star = Event.element(e);
	
			var greater = false;
			for(var i = 0; i < this.stars.length; i++)
			{
				this.stars[i].src = greater ? this._starSrc.empty : this._starSrc.full;
				if(this.stars[i] == star) greater = true;
			}
		},
		_starClick: function(e)
		{
			if(this.locked) return;
			if(!e) e = window.event;
			var star = Event.element(e);
			this._clicked = true;
			for(var i = 0; i < this.stars.length; i++)
			{
				if(this.stars[i] == star)
				{
					this.setValue(i+1);
					break;
				}
			}
			this.locked = true;
		},
		_starClear: function(e)
		{
			if(this.locked && this._initialized) return;
			var greater = false;
			for(var i = 0; i < this.stars.length; i++)
			{
				if(i > this.value) greater = true;
				if((this._initialized && this._clicked) || this.value == -1)
					this.stars[i].src = greater ? (this.value + .5 == i) ? this._starSrc.half : this._starSrc.empty : this._starSrc.full;
				else
					this.stars[i].src = greater ? (this.value + .5 == i) ? this._setStarSrc.half : this._setStarSrc.empty : this._setStarSrc.full;
			}
		},
		/**
		 * Sets the value of the star object, redraws the UI
		 * @param {Number} value to set
		 * @param {Boolean} optional, do the callback function, default true
		 */
		setValue: function(val)
		{
			var doCallBack = arguments.length > 1 ? !!arguments[1] : true;
			if(this.locked && this._initialized) return;
			this.value = val-1; //0-based
			if(this.options.bindField)
				$(this.options.bindField).value = val;
			if(this._initialized && doCallBack)
			{
				if(this.options.actionURL)
					new Ajax.Request(this.options.actionURL + val, {onComplete: this.options['callback'], method: 'get'});
				else
					if(this.options.callback)
						this.options['callback'](val);
			}
			this._starClear();
		}
	};	
}
catch(e)
{
	cyclone3.log('prototypeJS rating not available!');
}