/*
 * 	Content Slider - jQuery plugin
 *	written by Phil Morris
 *	http://cssglobe.com/post/3783/jquery-plugin-easy-image-or-content-slider
 *
 *	Copyright (c) 2011 Phil Morris (http://philmoris.net)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 *
 */

/*
 *	markup example for $("#images").contentSlider();
 *
 * 	<div id="images">
 *		<ul>
 *			<li><img src="images/01.jpg" alt="" /></li>
 *			<li><img src="images/02.jpg" alt="" /></li>
 *			<li><img src="images/03.jpg" alt="" /></li>
 *			<li><img src="images/04.jpg" alt="" /></li>
 *			<li><img src="images/05.jpg" alt="" /></li>
 *		</ul>
 *	</div>
 *
 */

(function($) {
    $.fn.contentSlider = function(options) {
        // default configuration properties
        var defaults = {
            delay:  5000,
            speed:  800
        };

        var options = $.extend(defaults, options);

        var headlines = $('ul', this);
        var numItems = $('li', headlines).length;
        var item = 0;
        var height = $('li',headlines).height();

        startHeadlineCycle();

        function startHeadlineCycle() {
            setTimeout(cycleHeadlines, options.delay);
        };
        
        function cycleHeadlines() {
            if (numItems > 1) {
                item++;
                if (item < numItems) {
                    headlines.animate(
                        { marginTop: height * item * -1 },
                        options.speed
                    );
                } else {
                    // reset to begining
                    item = 0;
                    headlines.animate(
                        { marginTop: 0 },
                        200 + (300 * numItems)
                    );
                }
                setTimeout(cycleHeadlines, options.delay);
            }
       };
    }
    $.fn.contentRotator = function(options) {
        // default configuration properties
        var defaults = {
            delay:  5000,
            speed:  800
        };

        var options = $.extend(defaults, options);

        var headlines = $('ul', this);
        var numItems = $('li', headlines).length;
        var item = 0;
        var height = $('li',headlines).height();

        startHeadlineCycle();

        function startHeadlineCycle() {
            setTimeout(cycleHeadlines, options.delay);
        };

        function cycleHeadlines() {
            if (numItems > 1) {
                item++;

                if (item < numItems) {
                    var marginTop = (height * item * -1);
                } else {
                    // reset to beginning
                    item = 0;
                    var marginTop = 0;
                }
                headlines.animate(
                    { opacity: 0 },
                    options.speed, function () {
                        headlines.css('marginTop', marginTop + 'px');
                        headlines.animate(
                            { opacity: 1 },
                            options.speed
                        );
                    }
                );
                if (item < numItems) {
                    headlines.animate(
                        { marginTop: height * item * -1 },
                        options.speed
                    );
                } else {
                    // reset to begining
                    item = 0;
                    headlines.animate(
                        { marginTop: 0 },
                        200 + (300 * numItems)
                    );
                }
                setTimeout(cycleHeadlines, options.delay);
            }
       };
    }

	$.fn.easySlider = function(options){

		// default configuration properties
		var defaults = {
			prevId: 		'prevBtn',
			prevText: 		'Previous',
			nextId: 		'nextBtn',
			nextText: 		'Next',
			orientation:	'', //  'vertical' is optional;
			speed: 			800
		};

		var options = $.extend(defaults, options);

		return this.each(function() {
			obj = $(this);
			var s = $("li", obj).length;
			var w = obj.width();
			var h = obj.height();
			var ts = s-1;
			var t = 0;
			var vertical = (options.orientation == 'vertical');
			if (!vertical) {
                            $("ul", obj).css('width',s*w);
                        }
			if(!vertical) $("li", obj).css('float','left');
			$(obj).after('<span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span> <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>');
			$("a","#"+options.prevId).hide();
			$("a","#"+options.nextId).hide();
			$("a","#"+options.nextId).click(function(){
				animate("next");
				if (t>=ts) $(this).fadeOut();
				$("a","#"+options.prevId).fadeIn();
			});
			$("a","#"+options.prevId).click(function(){
				animate("prev");
				if (t<=0) $(this).fadeOut();
				$("a","#"+options.nextId).fadeIn();
			});
			function animate(dir){
				if(dir == "next"){
					t = (t>=ts) ? ts : t+1;
				} else {
					t = (t<=0) ? 0 : t-1;
				};
				if(!vertical) {
					p = (t*w*-1);
					$("ul",obj).animate(
						{ marginLeft: p },
						options.speed
					);
				} else {
					p = (t*h*-1);
					$("ul",obj).animate(
						{ marginTop: p },
						options.speed
					);
				}
			};
			if(s>1) $("a","#"+options.nextId).fadeIn();
		});

	};

})(jQuery);