$(function(){
	
	var index = 0;
	
	function LScroll(opts){
		var options = {
			id: "",
			style: "",
			
			pullUpElId: ".l-pullUp",
			pullUpAction: undefined,
			
			pullDownElId: ".l-pullDown",
			pullDownAction: undefined, 
			pullDownMsg1: "下拉刷新...",
			pullDownMsg2: "松手开始更新...",
			type: 1, // 1:正常 上拉加载 下拉刷新  2：下拉加载
			page: 1,
			scrollCallBack: undefined,
			scrollEndCallBack: undefined,
			top: 0,
			// IScroll 配置
			iscrollOpt: null
		}
		var g= this;
		g.options = $.extend(true, options, opts);
		g.iScroll = undefined;
		g.noMore = false;
	}
	
	LScroll.prototype.refresh = function(noMore){
		var g= this,
		    p = g.options;
		if(typeof(noMore) == 'boolean'){
			g.noMore = noMore;
		} 
		g.iScroll.refresh();
	}
	
	LScroll.prototype.scrollToElement = function(el, time, offsetX, offsetY, easing){
		var g= this,
		    is = g.iScroll;
		is.scrollToElement(el, time, offsetX, offsetY, easing);
	}
	
	LScroll.prototype.refreshToEnd = function(time){
		var g= this,
		    p = g.options,
		    is = g.iScroll;
		is.refresh();
		time = time || 0;
		is.scrollTo(0, is.maxScrollY, time);
	}
	
	LScroll.prototype.refreshToTop = function(time){
		var g= this,
		    p = g.options,
		    is = g.iScroll;
		is.refresh();
		time = time || 0;
		is.scrollTo(0, 0, time);
	}
	
	LScroll.prototype.scrollToEnd = function(time){
		var g= this,
		    p = g.options,
		    is = g.iScroll;
		time = time || 0;
		var wrapperHeight = $(myScroll.iScroll.wrapper).height();
		is.scrollTo(0, wrapperHeight-is.scrollerHeight, time);
	}
	
	LScroll.prototype.init = function(){
		
		var g= this,
		    p = g.options;
		p.id = p.id || ("wrapper"+ index);
		p.style = p.style || "";
		if(p.top){
			p.style = "top:"+ p.top + "px;"+p.style;
		}
		p._el.wrap('<div id="'+ p.id +'" class="l-wrapper" style="'+ p.style +'"><div class="l-scroller"></div></div>')
		
		var _el = $('#'+p.id);
		if(p.pullDownAction){
			$('#'+p.id+ ' div.l-scroller').prepend('<div class="l-pullDown"><label class="pullDownLabel">'+ p.pullDownMsg1+'</label></div>');
		}
		
		if(p.pullUpAction){
			$('#'+p.id+ ' div.l-scroller').append('<div class="l-pullUp l-loading"><label class="pullUpLabel">上拉加载更多...</label></div>');
		}
		
		var pullUpEl= _el[0].querySelector(p.pullUpElId),
		    pullUpOffset,
		    
		    pullDownEl= _el[0].querySelector(p.pullDownElId),
		    pullDownOffset;
		
		
	    g.iScroll = new IScroll(_el[0], $.extend({
	    	probeType: 3
	    },g.options.iscrollOpt));
	    var myScroll = g.iScroll;
	    myScroll.on('refresh', function(){
	    	$(pullUpEl).show();
	    	$(pullDownEl).show();
			if (pullUpEl) {
				if(g.noMore){
					pullUpEl.className = 'noMoreData';
                	pullUpEl.querySelector('.pullUpLabel').innerHTML = '没有更多数据...';
				} else{
					pullUpEl.className = 'l-pullUp';
                	pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载更多...';
				}
           	} else if(pullDownEl) {
           		if(g.noMore){
           			if(p.type == 2){
           				pullDownEl.className = 'noMoreData';
           				pullDownEl.querySelector('.pullDownLabel').innerHTML = "没有更多数据...";
           			} else if(pullUpEl) {
           				pullUpEl.className = 'noMoreData';
                		pullUpEl.querySelector('.pullUpLabel').innerHTML = '没有更多数据...';
           			}
				} else{
					pullDownEl.className = 'l-pullDown';
	                pullDownEl.querySelector('.pullDownLabel').innerHTML = p.pullDownMsg1;
	                if(pullUpEl){
	                	pullUpEl.className = 'l-pullUp';
	                	pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载更多...';
	                }
				}
           	}
		});
		
	    myScroll.on('scroll', function(){
	    	
	    	if (pullDownEl && this.y > 30 && !pullDownEl.className.match('l-flip')) {
	    		if(pullDownEl.className.match('noMoreData'))
	    			return;
	    			
                pullDownEl.className = 'l-flip';
                pullDownEl.querySelector('.pullDownLabel').innerHTML = p.pullDownMsg2 ;
                this.minScrollY = pullDownEl.offsetHeight;
            } else if (pullDownEl && this.y < 30 && pullDownEl.className.match('l-flip')) {
            	if(pullDownEl.className.match('noMoreData'))
	    			return;
	    			
                pullDownEl.className = 'l-pullDown';
                pullDownEl.querySelector('.pullDownLabel').innerHTML = p.pullDownMsg1;
//              this.minScrollY = pullDownOffset;
            } else if (pullUpEl && this.y < (this.maxScrollY - 30) && !pullUpEl.className.match('l-flip')) {
            	if(pullUpEl.className.match('noMoreData'))
	    			return;
                pullUpEl.className = 'l-flip';
                pullUpEl.querySelector('.pullUpLabel').innerHTML = '松手开始加载...';
                this.maxScrollY = this.maxScrollY;
            } else if (pullUpEl && this.y > (this.maxScrollY + 30) && pullUpEl.className.match('l-flip')) {
            	if(pullUpEl.className.match('noMoreData'))
	    			return;
                pullUpEl.className = 'l-pullDown';
                pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载更多...';
                this.maxScrollY = pullUpEl.offsetHeight;
            }
            
            if(p.scrollCallBack)
            	p.scrollCallBack(this);
		});
		
		myScroll.on('scrollEnd', function(){
			
			if (pullDownEl && pullDownEl.className.match('l-flip')) {
				if(pullDownEl.className.match('noMoreData'))
	    			return;
	    			
                pullDownEl.className = 'l-loading';
                pullDownEl.querySelector('.pullDownLabel').innerHTML = '加载中...';
                if(p.type == 2)
                	++p.page;
                else
                	p.page = 1;
                p.noMore = false;
                pullDownEl.className= "l-loading";
                if(p.pullDownAction) p.pullDownAction(g);
            } else if (pullUpEl && pullUpEl.className.match('l-flip')) {
            	if(pullUpEl.className.match('noMoreData'))
	    			return;
	    		
                pullUpEl.className = 'l-loading';
                pullUpEl.querySelector('.pullUpLabel').innerHTML = '加载中...';
                ++p.page;
                if(p.pullUpAction) p.pullUpAction(g);
            }
            if(p.scrollEndCallBack)
            	p.scrollEndCallBack(this);
		});
		
//	    setTimeout(function () { p._el[0].style.left = '0'; }, 800);
	    return myScroll;
	}
	
	$.fn.lscroll = function (opts) {
		index++;
		opts = opts || {};
		opts._el = $(this);
		var o = new LScroll(opts);
		var myScroll = o.init();
		
		this.data("LScroll", myScroll);
		return o;
    };
    
    $.fn.getLScroll = function () {
		return this.data("LScroll");
    };
    
	document.addEventListener('touchmove', function (e) { 
	    //判别输入框的id
	    var that = e;
	    if(that.target.parentNode.parentNode.id && that.target.id != "input_content"){
	    	if(that.target.parentNode.parentNode.id != "history_search"){
	    		that.preventDefault();
	    	}
	    }else{
	    	if(that.target.id != "input_content"){
	    		that.preventDefault();
	    	}
	    }
	}, false);
})