/**
	Dropdown
**/

layui.define(['jquery'], function (exports) {

    var MOD_NAME = 'dropdown',
		CLASS_NAME = '.layui-dropdown',
		$ = layui.jquery;

	var dropdown = {
		"v" : '1.0.0'
    };
	
	//渲染
	dropdown.render = function(opt){
		$(CLASS_NAME).each(function (i, elem) {
			var jqelem = $(elem);
			var ulBox = jqelem.children('ul');
			var timer = '';
			ulBox.addClass('layui-anim layui-anim-upbit');
			var event = jqelem.hasClass('dropdown-click') ? 'click' : 'mouseenter';

			jqelem.on(event, function(e) {
				var disabled = jqelem.hasClass('dropdown-disabled');
				if(disabled){return false}
				clearTimeout(timer);
				//FIX 定位
				var overHeight = (jqelem.offset().top + jqelem.height() + ulBox.outerHeight() - $(window).scrollTop()) > $(window).height();
				if(overHeight){
					ulBox.css({"top":"auto","bottom":"100%"});
				}else{
					ulBox.css({"top":"100%","bottom":"auto"});
				}
				ulBox.show();
			});
			if(event == 'mouseenter'){
				jqelem.on("mouseleave", function(e) {
					timer = setTimeout(function(){
						ulBox.hide();
					}, 300);
				})
			}else{
				$(document).on("mouseup", function(e) {
					var userSet_con = jqelem;
					if(!userSet_con.is(e.target) && userSet_con.has(e.target).length === 0){
						ulBox.hide()
					}
				});
			}
		})
	}
	
	//自动完成渲染
	dropdown.render();
	
	//输出接口
	exports(MOD_NAME, dropdown);
});