layui.define(['jquery', 'element'], function(exports) {
	"use strict";

	var MOD_NAME = 'tab',
		$ = layui.jquery,
		element = layui.element;

	var pearTab = function(opt) {
		this.option = opt;
	};


	pearTab.prototype.render = function(opt) {
		//默认配置值
		var option = {
			elem: opt.elem,
			data: opt.data,
			tool: opt.tool,
			roll: opt.roll,
			index: opt.index,
			width: opt.width,
			height: opt.height,
			tabMax: opt.tabMax,
			closeEvent: opt.closeEvent
		}

		var tab = createTab(option);

		$("#" + option.elem).html(tab);

		$(".layui-tab[lay-filter='" + option.elem + "'] .layui-tab-prev").click(function() {
			rollPage("left", option);
		})

		$(".layui-tab[lay-filter='" + option.elem + "'] .layui-tab-next").click(function() {
			rollPage("right", option);
		})

		element.init();

		toolEvent(option);

		$("#" + option.elem).width(opt.width);
		$("#" + option.elem).height(opt.height);
		$("#" + option.elem).css({
			position: "relative"
		});

		closeEvent(option);

		return new pearTab(option);
	}

	pearTab.prototype.click = function(callback) {

		var elem = this.option.elem;

		element.on('tab(' + this.option.elem + ')', function(data) {

			var id = $("#" + elem + " .layui-tab-title .layui-this").attr("lay-id");

			callback(id);

		});
	}

	pearTab.prototype.positionTab = function() {
		var $tabTitle = $('.layui-tab[lay-filter=' + this.option.elem + ']  .layui-tab-title');
		var autoLeft = 0;
		$tabTitle.children("li").each(function() {
			if ($(this).hasClass('layui-this')) {
				return false;
			} else {
				autoLeft += $(this).outerWidth();
			}
		});
		$tabTitle.animate({
			scrollLeft: autoLeft - $tabTitle.width() / 3
		}, 200);
	}

	pearTab.prototype.addTab = function(opt) {

		var title = '';

		if (opt.close) {
			title += '<span class="pear-tab-active"></span><span class="able-close">' + opt.title +
				'</span><i class="layui-icon layui-unselect layui-tab-close">ဆ</i>';
		} else {
			title += '<span class="pear-tab-active"></span><span class="disable-close">' + opt.title +
				'</span><i class="layui-icon layui-unselect layui-tab-close">ဆ</i>';
		}
		element.tabAdd(this.option.elem, {
			title: title,
			content: '<iframe id="' + opt.id + '" data-frameid="' + opt.id + '" scrolling="auto" frameborder="0" src="' +
				opt.url + '" style="width:100%;height:100%;"></iframe>',
			id: opt.id
		});
		element.tabChange(this.option.elem, opt.id);
	}
	var index = 0;

	// 根据过滤 filter 标识, 删除执行选项卡
	pearTab.prototype.delTabByElem = function(elem, id, callback){
		var currentTab = $(".layui-tab[lay-filter='" + elem + "'] .layui-tab-title [lay-id='"+id+"']");
		if (currentTab.find("span").is(".able-close")) {
			tabDelete(elem, id, callback);
		}
	}
	
	// 根据过滤 filter 标识, 删除当前选项卡
	pearTab.prototype.delCurrentTabByElem = function(elem,callback){
			var currentTab = $(".layui-tab[lay-filter='" + elem + "'] .layui-tab-title .layui-this");
			if (currentTab.find("span").is(".able-close")) {
				var currentId = currentTab.attr("lay-id");
				tabDelete(elem, currentId, callback);
			}
	}

	// 通过过滤 filter 标识, 新增标签页
	pearTab.prototype.addTabOnlyByElem = function(elem, opt, time) {
		var title = '';
		if (opt.close) {
			title += '<span class="pear-tab-active"></span><span class="able-close">' + opt.title +
				'</span><i class="layui-icon layui-unselect layui-tab-close">ဆ</i>'
		} else {
			title += '<span class="pear-tab-active"></span><span class="disable-close">' + opt.title +
				'</span><i class="layui-icon layui-unselect layui-tab-close">ဆ</i>'
		}
		if ($(".layui-tab[lay-filter='" + elem + "'] .layui-tab-title li[lay-id]").length <= 0) {

			if (time != false && time != 0) {

				var load = '<div id="pear-tab-loading' + index + '" class="pear-tab-loading">' +
					'<div class="ball-loader">' +
					'<span></span><span></span><span></span><span></span>' +
					'</div>' +
					'</div>'
				$("#" + elem).find(".pear-tab").append(load);
				var pearLoad = $("#" + elem).find("#pear-tab-loading" + index);
				pearLoad.css({
					display: "block"
				});
				setTimeout(function() {
					pearLoad.fadeOut(500);
				}, time);
				index++;
			}
			element.tabAdd(elem, {
				title: title,
				content: '<iframe id="' + opt.id + '" data-frameid="' + opt.id + '" scrolling="auto" frameborder="0" src="' +
					opt.url + '" style="width:100%;height:100%;"></iframe>',
				id: opt.id
			});
		} else {
			var isData = false;
			$.each($(".layui-tab[lay-filter='" + elem + "'] .layui-tab-title li[lay-id]"), function() {
				if ($(this).attr("lay-id") == opt.id) {
					isData = true;
				}
			})

			if (isData == false) {
				if (time != false && time != 0) {
					var load = '<div id="pear-tab-loading' + index + '" class="pear-tab-loading">' +
						'<div class="ball-loader">' +
						'<span></span><span></span><span></span><span></span>' +
						'</div>' +
						'</div>'

					$("#" + elem).find(".pear-tab").append(load);
					var pearLoad = $("#" + elem).find("#pear-tab-loading" + index);
					pearLoad.css({
						display: "block"
					});
					setTimeout(function() {
						pearLoad.fadeOut(500);
					}, time);
					index++;
				}
				element.tabAdd(elem, {
					title: title,
					content: '<iframe id="' + opt.id + '" data-frameid="' + opt.id + '" scrolling="auto" frameborder="0" src="' +
						opt.url + '" style="width:100%;height:100%;"></iframe>',
					id: opt.id
				});
			}
		}
		element.tabChange(elem, opt.id);
	}


	/** 添 加 唯 一 选 项 卡 */
	pearTab.prototype.addTabOnly = function(opt, time) {

		var title = '';

		if (opt.close) {

			title += '<span class="pear-tab-active"></span><span class="able-close">' + opt.title +
				'</span><i class="layui-icon layui-unselect layui-tab-close">ဆ</i>'

		} else {

			title += '<span class="pear-tab-active"></span><span class="disable-close">' + opt.title +
				'</span><i class="layui-icon layui-unselect layui-tab-close">ဆ</i>'

		}

		if ($(".layui-tab[lay-filter='" + this.option.elem + "'] .layui-tab-title li[lay-id]").length <= 0) {

			if (time != false && time != 0) {

				var load = '<div id="pear-tab-loading' + index + '" class="pear-tab-loading">' +
					'<div class="ball-loader">' +
					'<span></span><span></span><span></span><span></span>' +
					'</div>' +
					'</div>'

				$("#" + this.option.elem).find(".pear-tab").append(load);
				var pearLoad = $("#" + this.option.elem).find("#pear-tab-loading" + index);
				pearLoad.css({
					display: "block"
				});

				setTimeout(function() {
					pearLoad.fadeOut(500);
				}, time);
				index++;
			}
			element.tabAdd(this.option.elem, {
				title: title,
				content: '<iframe id="' + opt.id + '" data-frameid="' + opt.id + '" scrolling="auto" frameborder="0" src="' +
					opt.url + '" style="width:100%;height:100%;"></iframe>',
				id: opt.id
			});
		} else {

			var isData = false;

			//查询当前选项卡数量
			if ($(".layui-tab[lay-filter='" + this.option.elem + "'] .layui-tab-title li[lay-id]").length >= this.option.tabMax) {
				layer.msg("最多打开" + this.option.tabMax + "个标签页", {
					icon: 2,
					time: 1000,
					shift : 6 //抖动效果
				});
				return false;
			}

			$.each($(".layui-tab[lay-filter='" + this.option.elem + "'] .layui-tab-title li[lay-id]"), function() {

				if ($(this).attr("lay-id") == opt.id) {

					isData = true;
				}
			})
			if (isData == false) {

				if (time != false && time != 0) {

					var load = '<div id="pear-tab-loading' + index + '" class="pear-tab-loading">' +
						'<div class="ball-loader">' +
						'<span></span><span></span><span></span><span></span>' +
						'</div>' +
						'</div>'

					$("#" + this.option.elem).find(".pear-tab").append(load);
					var pearLoad = $("#" + this.option.elem).find("#pear-tab-loading" + index);
					pearLoad.css({
						display: "block"
					});

					setTimeout(function() {
						pearLoad.fadeOut(500);
					}, time);
					index++;
				}

				element.tabAdd(this.option.elem, {
					title: title,
					content: '<iframe id="' + opt.id + '" data-frameid="' + opt.id + '" scrolling="auto" frameborder="0" src="' +
						opt.url + '" style="width:100%;height:100%;"></iframe>',
					id: opt.id
				});
			}
		}
		element.tabChange(this.option.elem, opt.id);
	}


	// 刷 新 指 定 的 选 项 卡
	pearTab.prototype.refresh = function(time) {

		// 刷 新 指 定 的 选 项 卡
		if (time != false && time != 0) {

			var load = '<div id="pear-tab-loading' + index + '" class="pear-tab-loading">' +
				'<div class="ball-loader">' +
				'<span></span><span></span><span></span><span></span>' +
				'</div>' +
				'</div>'

            var elem =  this.option.elem;
			$("#" + this.option.elem).find(".pear-tab").append(load);
			var pearLoad = $("#" + this.option.elem).find("#pear-tab-loading" + index);
			pearLoad.css({
				display: "block"
			});
			index++;
			setTimeout(function() {
				pearLoad.fadeOut(500,function(){
					pearLoad.remove();
				});       
			}, time);
			$(".layui-tab[lay-filter='" + elem + "'] .layui-tab-content .layui-show").find("iframe")[0].contentWindow
				.location.reload(true);
		} else {
			$(".layui-tab[lay-filter='" + this.option.elem + "'] .layui-tab-content .layui-show").find("iframe")[0].contentWindow
				.location.reload(true);
		}
	}
	
	function tabDelete(elem, id, callback) {

		//根据 elem id 来删除指定的 layui title li
		var tabTitle = $(".layui-tab[lay-filter='" + elem + "']").find(".layui-tab-title");

		// 删除指定 id 的 title
		var removeTab = tabTitle.find("li[lay-id='" + id + "']");
		var nextNode = removeTab.next("li");

        if(!removeTab.hasClass("layui-this")){
			
			removeTab.remove();
			var tabContent = $(".layui-tab[lay-filter='" + elem + "']").find("iframe[id='" + id + "']").parent();
			tabContent.remove();
			return false;
		}

		var currId;

		if (nextNode.length) {

			nextNode.addClass("layui-this");
			currId = nextNode.attr("lay-id");
			$("#" + elem + " [id='" + currId + "']").parent().addClass("layui-show");

		} else {

			var prevNode = removeTab.prev("li");
			prevNode.addClass("layui-this");
			currId = prevNode.attr("lay-id");
			$("#" + elem + " [id='" + currId + "']").parent().addClass("layui-show");

		}
		callback(currId);
		removeTab.remove();
		// 删除 content
		var tabContent = $(".layui-tab[lay-filter='" + elem + "']").find("iframe[id='" + id + "']").parent();
		tabContent.remove();
	}

	function createTab(option) {

		var type = "";
		
		var types = option.type+" ";

		if (option.roll == true) {

			type = "layui-tab-roll";
		}

		if (option.tool != false) {
			type = "layui-tab-tool";
		}

		if (option.roll == true && option.tool != false) {
			type = "layui-tab-rollTool";
		}

		var tab = '<div class="pear-tab ' + types + type + ' layui-tab" lay-filter="' + option.elem + '" lay-allowClose="true">';

		var title = '<ul class="layui-tab-title">';

		var content = '<div class="layui-tab-content">';

		var control =
			'<div class="layui-tab-control"><li class="layui-tab-prev layui-icon layui-icon-left"></li><li class="layui-tab-next layui-icon layui-icon-right"></li><li class="layui-tab-tool layui-icon layui-icon-down"><ul class="layui-nav" lay-filter=""><li class="layui-nav-item"><a href="javascript:;"></a><dl class="layui-nav-child">';

		// 处 理 选 项 卡 头 部

		var index = 0;

		$.each(option.data, function(i, item) {

			var TitleItem = '';

			if (option.index == index) {

				TitleItem += '<li lay-id="' + item.id + '" class="layui-this"><span class="pear-tab-active"></span>';

			} else {

				TitleItem += '<li lay-id="' + item.id + '" ><span class="pear-tab-active"></span>';

			}

			if (item.close) {
				// 当 前 选 项 卡 可 以 关 闭
				TitleItem += '<span class="able-close">' + item.title + '</span>';
			} else {
				// 当 前 选 项 卡 不 允 许 关 闭
				TitleItem += '<span class="disable-close">' + item.title + '</span>';
			}

			TitleItem += '<i class="layui-icon layui-unselect layui-tab-close">ဆ</i></li>';

			title += TitleItem;


			if (option.index == index) {

				// 处 理 显 示 内 容
				content += '<div class="layui-show layui-tab-item"><iframe id="' + item.id + '" data-frameid="' + item.id +
					'"  src="' + item.url +
					'" frameborder="no" border="0" marginwidth="0" marginheight="0" style="width: 100%;height: 100%;"></iframe></div>'

			} else {

				// 处 理 显 示 内 容
				content += '<div class="layui-tab-item"><iframe id="' + item.id + '" data-frameid="' + item.id + '"  src="' +
					item.url +
					'" frameborder="no" border="0" marginwidth="0" marginheight="0" style="width: 100%;height: 100%;"></iframe></div>'

			}
			index++;
		});

		title += '</ul>';
		content += '</div>';
		control += '<dd id="closeThis"><a href="#">关 闭 当 前</a></dd>'
		control += '<dd id="closeOther"><a href="#">关 闭 其 他</a></dd>'
		control += '<dd id="closeAll"><a href="#">关 闭 全 部</a></dd>'
		control += '</dl></li></ul></li></div>';

		tab += title;
		tab += control;
		tab += content;
		tab += '</div>';
		tab += ''
		return tab;
	}

	function rollPage(d, option) {
		var $tabTitle = $('#' + option.elem + '  .layui-tab-title');

		var left = $tabTitle.scrollLeft();

		if ('left' === d) {

			$tabTitle.animate({
				scrollLeft: left - 450
			}, 200);

		} else {

			$tabTitle.animate({
				scrollLeft: left + 450
			}, 200);
		}
	}

	function closeEvent(option) {
		$(".layui-tab[lay-filter='" + option.elem + "']").on("click", ".layui-tab-close", function() {
			var layid = $(this).parent().attr("lay-id");
			tabDelete(option.elem, layid, option.closeEvent);
		})
	}

	function toolEvent(option) {

		$("body .layui-tab[lay-filter='" + option.elem + "']").on("click", "#closeThis", function() {
			var currentTab = $(".layui-tab[lay-filter='" + option.elem + "'] .layui-tab-title .layui-this");
			if (currentTab.find("span").is(".able-close")) {
				var currentId = currentTab.attr("lay-id");
				tabDelete(option.elem, currentId, option.closeEvent);
			}

		})

		$("body .layui-tab[lay-filter='" + option.elem + "']").on("click", "#closeOther", function() {
			var currentId = $(".layui-tab[lay-filter='" + option.elem + "'] .layui-tab-title .layui-this").attr("lay-id");
			var tabtitle = $(".layui-tab[lay-filter='" + option.elem + "'] .layui-tab-title li");
			$.each(tabtitle, function(i) {
				if ($(this).attr("lay-id") != currentId) {
					if ($(this).find("span").is(".able-close")) {
						tabDelete(option.elem, $(this).attr("lay-id"), option.closeEvent);
					}
				}
			})
		})

		$("body .layui-tab[lay-filter='" + option.elem + "']").on("click", "#closeAll", function() {
			var currentId = $(".layui-tab[lay-filter='" + option.elem + "'] .layui-tab-title .layui-this").attr("lay-id");
			var tabtitle = $(".layui-tab[lay-filter='" + option.elem + "'] .layui-tab-title li");
			$.each(tabtitle, function(i) {
				if ($(this).find("span").is(".able-close")) {
					tabDelete(option.elem, $(this).attr("lay-id"), option.closeEvent);
				}
			})
		})
	}

	exports(MOD_NAME, new pearTab());
})