/*

	jQuery Scroller plugin
	Copyright (c) 2010 Max Vergelli

	For support and tutorials visit
	http://maxvergelli.wordpress.com/

	License: GNU Lesser General Public License (LGPL) 
	at http://opensource.org/licenses/lgpl-2.1.php

	This plugin is free software;  you can redistribute it  and/or  modify  it 
	under the terms of the GNU Lesser General Public License as  published  by 
	the Free Software Foundation;  either version 2.1 of the License,  or  (at 
	your option) any later version.
	This software is distributed in the hope  that  it  will  be  useful,  but 
	WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
	or FITNESS FOR A PARTICULAR PURPOSE.  See the  GNU Lesser  General  Public 
	License for more details.
	You should have received a copy of  the  GNU Lesser General Public License 
	along with this library;  if not,  write to the  Free Software Foundation, 
	Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

	THIS COMMENT AND COPYRIGHT NOTICE MUST BE RETAINED IN THE CODE AS IS FOR LEGAL USE
	
	RL110224
	Simplified: only horizontal scrolling from right, infinite loop

*/

(function ($) {
	$.fn.PlayScroller = function(){
		this.children().stop();
		this.children().trigger('marquee',['resume']);
	};
	$.fn.PauseScroller = function(){
		this.children().stop();
	};
	$.fn.ResetScroller = function(options){
		this.children().stop();
		this.children().unbind('marquee');
		options = $.extend(this.data(), options);
		this.SetScroller(options);
	};
	$.fn.RemoveScroller = function(){
		this.children().stop();
		this.children().css({ top:0, left:0 });
		this.children().unbind('marquee');
	};
	$.fn.SetScroller = function (options) {
		var _ = { me: this };
		options = $.extend({ 
								velocity: 50,
								onmouseover: 'pause',
								onmouseout: 'play',
								onstartup: 'play',
								cursor: 'pointer'
							}, 
							options);
		var velocity = typeof options.velocity == 'number' ? parseInt(options.velocity) : 50;
		var loop = -1; 
		var onmouseover = options.onmouseover.toLowerCase();
		var onmouseout = options.onmouseout.toLowerCase();
		var onstartup = options.onstartup.toLowerCase();
		var cursor = options.cursor.toLowerCase();
		_.me.data(options);
		main();
		function main() {
			_.me.css('cursor',cursor);
			scrollHorizontal();
			if(onmouseover=='play'){
				_.me.mouseover(function(){
					$(this).children().stop();
					$(this).children().trigger('marquee',['resume']);
				});
			}else{
				_.me.mouseover(function(){
					$(this).children().stop();
				});
			};
			if(onmouseout=='play'){
				_.me.mouseout(function(){
					$(this).children().stop();
					$(this).children().trigger('marquee',['resume']);
				});
			}else{
				_.me.mouseout(function(){
					$(this).children().stop();
				});
			};
			if(onstartup!='play'){
				_.me.children().stop();
			};
		};
		
		function scrollHorizontal(){
			_.me.children().bind('marquee', function(event,c) {
				var ob = $(this);
				var sw = parseInt(ob.parent().parent().width())-120; //RL110224 120: label width
				var tw = parseInt(ob.width());
				var tl = parseInt(ob.position().left);
				var v  = velocity>0 && velocity<100 ? (100-velocity)*100 : 5000;
				var dr = parseInt(v*tw/100)+v;				
		
				if(typeof c == 'undefined'){	
					ob.css({ left: sw });
					sw = -tw;
				}else{
					sw = tl - (tw + sw);
				};			

				ob.animate(	{left:sw},
					{	duration:dr,
						easing:'linear',
						complete:function(){ob.trigger('marquee');},
						step:function(){
							if(parseInt(ob.position().left) < -parseInt(ob.width())){
								ob.stop();
								ob.trigger('marquee');
							};								
						}
					});									
			}).trigger('marquee');
		};
		return this;
	};
})(jQuery);