// JavaScript Document

(function($){
	$.fn.colorTip = function(settings){

		var defaultSettings = {
			color		: 'yellow',
			timeout		: 100
		}

		var supportedColors = ['red','green','blue','white','yellow','black'];

		/* Combining the default settings object with the supplied one */
		settings = $.extend(defaultSettings,settings);

		/*
		*	Looping through all the elements and returning them afterwards.
		*	This will add chainability to the plugin.
		*/

		return this.each(function(){

			var elem = $(this);

			// If the title attribute is empty, continue with the next element
			if(!elem.attr('title')) return true;

			// Creating new eventScheduler and Tip objects for this element.
			// (See the class definition at the bottom).

			var scheduleEvent = new eventScheduler();
			var tip = new Tip(elem.attr('title'));

			// Adding the tooltip markup to the element and
			// applying a special class:

			elem.append(tip.generate()).addClass('colorTipContainer');

			// Checking to see whether a supported color has been
			// set as a classname on the element.

			var hasClass = false;
			for(var i=0;i<supportedColors.length;i++)
			{
				if(elem.hasClass(supportedColors[i])){
					hasClass = true;
					break;
				}
			}

			// If it has been set, it will override the default color

			if(!hasClass){
				elem.addClass(settings.color);
			}
			
					// On mouseenter, show the tip, on mouseleave set the
		// tip to be hidden in half a second.

		elem.hover(function(){

			tip.show();

			// If the user moves away and hovers over the tip again,
			// clear the previously set event:

			scheduleEvent.clear();

		},function(){

			// Schedule event actualy sets a timeout (as you can
			// see from the class definition below).

			scheduleEvent.set(function(){
				tip.hide();
			},settings.timeout);

		});

		// Removing the title attribute, so the regular OS titles are
		// not shown along with the tooltips.

		elem.removeAttr('title');
	});

}

/*
/	Event Scheduler Class Definition
*/

function eventScheduler(){}

eventScheduler.prototype = {
	set	: function (func,timeout){

		// The set method takes a function and a time period (ms) as
		// parameters, and sets a timeout

		this.timer = setTimeout(func,timeout);
	},
	clear: function(){

		// The clear method clears the timeout

		clearTimeout(this.timer);
	}
}

	/*
	/	Tip Class Definition
	*/

	function Tip(txt){
		this.content = txt;
		this.shown = false;
	}

	Tip.prototype = {
		generate: function(){

			// The generate() method returns either a previously generated element
			// stored in the tip variable, or generates and saves it in tip for
			// later use, after which returns it.

			return this.tip || (this.tip = $('<span class="colorTip">'+this.content+
											 '<span class="pointyTipShadow"></span><span class="pointyTip"></span></span>'));
		},
		show: function(){
			if(this.shown) return;

			// Center the tip and start a fadeIn animation
			this.tip.css('margin-left',-this.tip.outerWidth()/2).fadeIn('fast');
			this.shown = true;
		},
		hide: function(){
			this.tip.fadeOut();
			this.shown = false;
		}
	}

})(jQuery);