//分页插件
/**
 * 2015-11-09
 * @author by futural
 */
(function($){
	var ms = {
		init:function(obj,args){
			return (function(){
				ms.fillHtml(obj,args);
				ms.bindEvent(obj,args);
			})();
		},
		//填充html
		fillHtml:function(obj,args){
			return (function(){
				obj.empty();
				//上一页
				if(args.current > 1){
					obj.append('<a href="javascript:;" class="prevPage"><上一页</a>');
				}else{
					obj.remove('.prevPage');
					obj.append('<span class="disabled"><上一页</span>');
				}
				//中间页码
				if(args.current != 1 && args.current >= 4 && args.pageCount != 4){
					obj.append('<a href="javascript:;" class="tcdNumber">'+1+'</a>');
				}
				if(args.current-2 > 2 && args.current <= args.pageCount && args.pageCount > 5){
					obj.append('<span>...</span>');
				}
				var start = args.current -2,end = args.current+2;
				if((start > 1 && args.current < 4)||args.current == 1){
					end++;
				}
				if(args.current > args.pageCount-4 && args.current >= args.pageCount){
					start--;
				}
				for (;start <= end; start++) {
					if(start <= args.pageCount && start >= 1){
						if(start != args.current){
							obj.append('<a href="javascript:;" class="tcdNumber">'+ start +'</a>');
						}else{
							obj.append('<span class="current">'+ start +'</span>');
						}
					}
				}
				if(args.current + 2 < args.pageCount - 1 && args.current >= 1 && args.pageCount > 5){
					obj.append('<span>...</span>');
				}
				if(args.current != args.pageCount && args.current < args.pageCount -2  && args.pageCount != 4){
					obj.append('<a href="javascript:;" class="tcdNumber">'+args.pageCount+'</a>');
				}
				//下一页
				if(args.current < args.pageCount){
					obj.append('<a href="javascript:;" class="nextPage">下一页></a>');
				}else{
					obj.remove('.nextPage');
					obj.append('<span class="disabled">下一页></span>');
				}
				obj.append('<span class="pagecount">共'+args.pageCount+'页</span>');
				//跳转页码
				if(args.turndown == 'true'){
					obj.append('<span class="countYe">到第<input type="text" onkeyup="this.value=this.value.replace(/\\D/g,\'\')" onafterpaste="this.value=this.value.replace(/\\D/g,\'\')" maxlength='+args.pageCount.toString().length+'>页<a href="javascript:;" class="turndown">确定</a><span>');
				}
			})();
		},
		//绑定事件
		bindEvent:function(obj,args){
			return (function(){
				obj.off("click","a.tcdNumber");  //移除原有事件 避免重复绑定
				obj.on("click","a.tcdNumber",function(){
					var current = parseInt($(this).text());
					ms.fillHtml(obj,{"current":current,"pageCount":args.pageCount,"turndown":args.turndown});
					if(typeof(args.backFn)=="function"){
						args.backFn(current);
					}
				});
				//上一页
				obj.off("click","a.prevPage");  //移除原有事件 避免重复绑定
				obj.on("click","a.prevPage",function(){
					var current = parseInt(obj.children("span.current").text());
					ms.fillHtml(obj,{"current":current-1,"pageCount":args.pageCount,"turndown":args.turndown});
					if(typeof(args.backFn)=="function"){
						args.backFn(current-1);
					}
				});
				//下一页
				obj.off("click","a.nextPage");  //移除原有事件 避免重复绑定
				obj.on("click","a.nextPage",function(){
					var current = parseInt(obj.children("span.current").text());
					ms.fillHtml(obj,{"current":current+1,"pageCount":args.pageCount,"turndown":args.turndown});
					if(typeof(args.backFn)=="function"){
						args.backFn(current+1);
					}
				});
				//跳转
				obj.off("click","a.turndown");  //移除原有事件 避免重复绑定
				obj.on("click","a.turndown",function(){
					var page = $("span.countYe input").val();
					if(page.trim()==""){page=1;}
					page=parseInt(page);
					if(page==0){page=1;}
					if (page > args.pageCount) {
					    alert("您的输入有误，请重新输入！");
					    $("span.countYe input").val('');
					    $("span.countYe input").focus();
					    return;
					}
					ms.fillHtml(obj,{"current":page,"pageCount":args.pageCount,"turndown":args.turndown});
					if(typeof(args.backFn)=="function"){
						args.backFn(page);
					}
//					var page = parseInt($("span.countYe input").val());
//					if (page > args.pageCount) {
//					    alert("您的输入有误，请重新输入！");
//					    return;
//					}
//					ms.fillHtml(obj,{"current":page,"pageCount":args.pageCount,"turndown":args.turndown});
//					if(typeof(args.backFn)=="function"){
//						args.backFn(page);
//					}
				});
			})();
		}
	}
	$.fn.createPage = function(options){
		var args = $.extend({
			pageCount : 10,
			current : 1,
			turndown:true,
			backFn : function(){}
		},options);
		ms.init(this,args);
	}
})(jQuery);