// / <reference path="../intellisense/jquery-1.2.6-vsdoc-cn.js" />
/*******************************************************************************
 * author:xuanye.wan@gmail.com
 ******************************************************************************/
try {
	document.execCommand("BackgroundImageCache", false, true);
} catch (e) {
}
$(document).ready(function() {
			if ($.browser.msie) {
				var v = parseInt($.browser.version);
				$(document.body).addClass("ie ie" + v);
			}
		});
(function($) {
	$.fn.swapClass = function(c1, c2) {
		return this.removeClass(c1).addClass(c2);
	};
	$.fn.switchClass = function(c1, c2) {
		if (this.hasClass(c1)) {
			return this.swapClass(c1, c2);
		} else {
			return this.swapClass(c2, c1);
		}
	};
	$.fn.treebuild = function(settings) {
		var dfop = {
			method : "POST",
			datatype : "json",
			url : false,
			cbiconpath : "js/jquery/tree/treebuild/images/icons/",
			icons : ["checkbox_0.gif", "checkbox_1.gif", "checkbox_2.gif"],
			treepath : "js/jquery/tree/treebuild/",
			showcheck : false, // 是否显示选择
			oncheckboxclick : false, // 当checkstate状态变化时所触发的事件，但是不会触发因级联选择而引起的变化
			onnodeclick : false,
			cascadecheck : true,
			asnyParam : [],
			data : null,
			clicktoggle : true, // 点击节点展开和收缩子节点
			theme : "bbit-tree-arrows" // bbit-tree-lines
			// ,bbit-tree-no-lines,bbit-tree-arrows
		};

		$.extend(dfop, settings);
		var treenodes = dfop.data;
		var me = $(this);
		var id = me.attr("id");
		if (id == null || id == "") {
			id = "bbtree" + new Date().getTime();
			me.attr("id", id);
		}

		var html = [];
		buildtree(dfop.data, html);
		me.addClass("bbit-tree").html(html.join(""));
		InitEvent(me);
		html = null;
		// 预加载图片
		if (dfop.showcheck) {
			for (var i = 0; i < 3; i++) {
				var im = new Image();
				im.src = dfop.cbiconpath + dfop.icons[i];
			}
		}
		// region
		function buildtree(data, ht) {
			ht.push("<div class='bbit-tree-bwrap'>"); // Wrap ;
			ht.push("<div class='bbit-tree-body'>"); // body ;
			ht.push("<ul class='bbit-tree-root ", dfop.theme, "'>"); // root
			var l = data.length;
			for (var i = 0; i < l; i++) {
				buildnode(data[i], ht, 0, i, i == l - 1);
			}
			ht.push("</ul>"); // root and;
			ht.push("</div>"); // body end;
			ht.push("</div>"); // Wrap end;
		}
		// endregion
		function buildnode(nd, ht, deep, path, isend) {
			ht.push("<li class='bbit-tree-node'>");
			ht.push("<div id='", id, "_", nd.id, "' tpath='", path,
					"' unselectable='on'");
			var cs = [];
			cs.push("bbit-tree-node-el");
			if (nd.hasChildren) {
				cs.push(nd.isexpand
						? "bbit-tree-node-expanded"
						: "bbit-tree-node-collapsed");
			} else {
				cs.push("bbit-tree-node-leaf");
			}
			if (nd.classes) {
				cs.push(nd.classes);
			}

			ht.push(" class='", cs.join(" "), "'>");
			// span indent
			ht.push("<span class='bbit-tree-node-indent node' >");
			if (deep == 1) {
				ht.push("<img class='bbit-tree-icon' src='" + dfop.treepath
						+ "images/s.gif'/>");
			} else if (deep > 1) {
				ht.push("<img class='bbit-tree-icon' src='" + dfop.treepath
						+ "images/s.gif'/>");
				for (var j = 1; j < deep; j++) {
					ht.push("<img class='bbit-tree-elbow-line' src='"
							+ dfop.treepath + "images/s.gif'/>");
				}
			}
			ht.push("</span>");
			// img
			cs.length = 0;
			if (nd.hasChildren) {
				if (nd.isexpand) {
					cs.push(isend
							? "bbit-tree-elbow-end-minus"
							: "bbit-tree-elbow-minus");
				} else {
					cs.push(isend
							? "bbit-tree-elbow-end-plus"
							: "bbit-tree-elbow-plus");
				}
			} else {
				cs.push(isend ? "bbit-tree-elbow-end" : "bbit-tree-elbow");
			}
			ht.push("<img class='bbit-tree-ec-icon ", cs.join(" "), "' src='"
							+ dfop.treepath + "images/s.gif'/>");
			ht.push("<img class='bbit-tree-node-icon' src='" + dfop.treepath
					+ "images/s.gif'/>");
			// checkbox
			if (dfop.showcheck && nd.showcheck) {
				if (nd.checkstate == null || nd.checkstate == undefined) {
					nd.checkstate = 0;
				}
				ht.push("<img  id='", id, "_", nd.id,
						"_cb' class='bbit-tree-node-cb' src='",
						dfop.cbiconpath, dfop.icons[nd.checkstate], "'/>");
			}
			// a
			ht.push("<a hideFocus class='bbit-tree-node-anchor' tabIndex=1 href='javascript:void(0);'>");
			ht.push("<span unselectable='on' class='node'>", nd.text, "</span>");
			ht.push("</a>");
			ht.push("</div>");
			// Child
			if (nd.hasChildren) {
				if (nd.isexpand) {
					ht.push("<ul  class='bbit-tree-node-ct'  style='z-index: 0; position: static; visibility: visible; top: auto; left: auto;'>");
					if (nd.childNodes) {
						var l = nd.childNodes.length;
						for (var k = 0; k < l; k++) {
							nd.childNodes[k].parent = nd;
							buildnode(nd.childNodes[k], ht, deep + 1, path
											+ "." + k, k == l - 1);
						}
					}
					ht.push("</ul>");
				} else {
					ht.push("<ul style='display:none;'></ul>");
				}
			}
			ht.push("</li>");
			nd.render = true;
		}
		function getItem(path) {
			var ap = path.split(".");
			var t = treenodes;
			for (var i = 0; i < ap.length; i++) {
				if (i == 0) {
					t = t[ap[i]];
				} else {
					t = t.childNodes[ap[i]];
				}
			}
			return t;
		}
		function check(item, state, type) {
			var pstate = item.checkstate;
			if (type == 1) {
				item.checkstate = state;
			} else {// 上溯
				var cs = item.childNodes;
				var l = cs.length;
				var ch = true;
				for (var i = 0; i < l; i++) {
					if ((state == 1 && cs[i].checkstate != 1) || state == 0
							&& cs[i].checkstate != 0) {
						ch = false;
						break;
					}
				}
				if (ch) {
					item.checkstate = state;
				} else {
					item.checkstate = 2;
				}
			}
			// change show
			if (item.render && pstate != item.checkstate) {
				var et = $("#" + id + "_" + item.id + "_cb");
				if (et.length == 1) {
					et.attr("src", dfop.cbiconpath
									+ dfop.icons[item.checkstate]);
				}
			}
		}
		// 遍历子节点
		function cascade(fn, item, args) {
			if (fn(item, args, 1) != false) {
				if (item.childNodes != null && item.childNodes.length > 0) {
					var cs = item.childNodes;
					for (var i = 0, len = cs.length; i < len; i++) {
						cascade(fn, cs[i], args);
					}
				}
			}
		}
		// 冒泡的祖先
		function bubble(fn, item, args) {
			var p = item.parent;
			while (p) {
				if (fn(p, args, 0) === false) {
					break;
				}
				p = p.parent;
			}
		}
		function nodeclick(e) {
			var path = $(this).attr("tpath");
			var et = e.target || e.srcElement;
			var item = getItem(path);

			// debugger;
			if (et.tagName == "IMG") {
				if ($(et).hasClass("bbit-tree-elbow-plus")
						|| $(et).hasClass("bbit-tree-elbow-end-plus")) {
					// +号需要展开
					var ul = $(this).next(); // "bbit-tree-node-ct"
					if (ul.hasClass("bbit-tree-node-ct")) {
						ul.show();
					} else {
						var deep = path.split(".").length;
						if (item.complete) {
							item.childNodes != null
									&& asnybuild(item.childNodes, deep, path,
											ul, item);
						} else {
							$(this).addClass("bbit-tree-node-loading");
							asnyloadc(ul, item, function(data) {
										item.complete = true;
										item.childNodes = data;
										asnybuild(data, deep, path, ul, item);
									});
						}
					}
					if ($(et).hasClass("bbit-tree-elbow-plus")) {
						$(et).swapClass("bbit-tree-elbow-plus",
								"bbit-tree-elbow-minus");
					} else {
						$(et).swapClass("bbit-tree-elbow-end-plus",
								"bbit-tree-elbow-end-minus");
					}
					$(this).swapClass("bbit-tree-node-collapsed",
							"bbit-tree-node-expanded");
				} else if ($(et).hasClass("bbit-tree-elbow-minus")
						|| $(et).hasClass("bbit-tree-elbow-end-minus")) {
					// -号需要收缩
					$(this).next().hide();
					if ($(et).hasClass("bbit-tree-elbow-minus")) {
						$(et).swapClass("bbit-tree-elbow-minus",
								"bbit-tree-elbow-plus");
					} else {
						$(et).swapClass("bbit-tree-elbow-end-minus",
								"bbit-tree-elbow-end-plus");
					}
					$(this).swapClass("bbit-tree-node-expanded",
							"bbit-tree-node-collapsed");
				} else if ($(et).hasClass("bbit-tree-node-cb")) {
					// 点击了Checkbox
					var s = item.checkstate != 1 ? 1 : 0;
					var r = true;
					if (dfop.oncheckboxclick) {
						r = dfop.oncheckboxclick.call(et, item, s);
					}
					if (r != false) {
						if (dfop.cascadecheck) {
							// 遍历
							cascade(check, item, s);
							// 上溯
							bubble(check, item, s);
						} else {
							check(item, s, 1);
						}
					}
				}
			} else {
				if (dfop.citem) {
					$("#" + id + "_" + dfop.citem.id)
							.removeClass("bbit-tree-selected");
				}
				dfop.citem = item;
				$(this).addClass("bbit-tree-selected");
				if (dfop.onnodeclick) {
					dfop.onnodeclick.call(this, item);
				}
			}
		}
		function asnybuild(nodes, deep, path, ul, pnode) {
			var l = nodes.length;
			if (l > 0) {
				var ht = [];
				for (var i = 0; i < l; i++) {
					nodes[i].parent = pnode;
					buildnode(nodes[i], ht, deep, path + "." + i, i == l - 1);
				}
				ul.html(ht.join(""));
				ht = null;
				InitEvent(ul);
			}
			ul.addClass("bbit-tree-node-ct").css({
						"z-index" : 0,
						position : "static",
						visibility : "visible",
						top : "auto",
						left : "auto",
						display : ""
					});
			ul.prev().removeClass("bbit-tree-node-loading");
		}
		function asnyloadc(pul, pnode, callback) {
			if (dfop.url) {
				var param = builparam(pnode);
				$.ajax({
							type : dfop.method,
							url : dfop.url,
							data : param,
							dataType : dfop.datatype,
							success : callback,
							error : function(e) {
								alert("error occur!");
							}
						});
			}
		}
		function builparam(node) {
			var p = [{
						name : "id",
						value : encodeURIComponent(node.id)
					}, {
						name : "text",
						value : encodeURIComponent(node.text)
					}, {
						name : "value",
						value : encodeURIComponent(node.value)
					}, {
						name : "checkstate",
						value : node.checkstate
					}];
			if (dfop.asnyParam.length > 0) {
				for (var i = 0; i < dfop.asnyParam.length; i++) {
					p.push(dfop.asnyParam[i]);
				}
			}

			return p;
		}
		function InitEvent(parent) {
			var nodes = $("li.bbit-tree-node>div", parent);
			nodes.each(function(e) {
						$(this).hover(function() {
									$(this).addClass("bbit-tree-node-over");
								}, function() {
									$(this).removeClass("bbit-tree-node-over");
								}).click(nodeclick)
								.find("img.bbit-tree-ec-icon").each(
										function(e) {
											if (!$(this)
													.hasClass("bbit-tree-elbow")) {
												$(this).hover(function() {
													$(this)
															.parent()
															.addClass("bbit-tree-ec-over");
												}, function() {
													$(this)
															.parent()
															.removeClass("bbit-tree-ec-over");
												});
											}
										});
					});
		}
		function reflash(itemId) {
			var nid = itemId.replace(/[^\w-]/gi, "_");
			var node = $("#" + id + "_" + nid);
			
			if (node.length > 0) {
				node.addClass("bbit-tree-node-loading");
				var isend = node.hasClass("bbit-tree-elbow-end")
						|| node.hasClass("bbit-tree-elbow-end-plus")
						|| node.hasClass("bbit-tree-elbow-end-minus");
				var path = node.attr("tpath");
				var deep = path.split(".").length;
				var item = getItem(path);
				if (item) {
					asnyloadc(true, item, function(data) {
								item.complete = true;
								item.childNodes = data;
								item.isexpand = true;
								if (data && data.length > 0) {
									item.hasChildren = true;
								} else {
									item.hasChildren = false;
								}
								var ht = [];
								buildnode(item, ht, deep - 1, path, isend);
								var li = node.parent();
								li.html(ht.join(""));
								ht = null;
								InitEvent(li);
							});
				}
			} else {
				alert("该节点还没有生成");
			}
		}
		function getck(items, c, fn) {
			for (var i = 0, l = items.length; i < l; i++) {
				items[i].checkstate == 1 && c.push(fn(items[i]));
				if (items[i].childNodes != null
						&& items[i].childNodes.length > 0) {
					getck(items[i].childNodes, c, fn);
				}
			}
		}
		me[0].t = {
			getSelectedNodes : function() {
				var s = [];
				getck(treenodes, s, function(item) {
							return item
						});
				return s;
			},
			getSelectedValues : function() {
				var s = [];
				getck(treenodes, s, function(item) {
							return item.value
						});
				return s;
			},
			getCurrentItem : function() {
				return dfop.citem;
			},
            reflash: function(itemOrItemId) {
                var id;
                if (typeof (itemOrItemId) == "string") {
                    id = itemOrItemId;
                } else {
                    id = itemOrItemId.id;
                }
                reflash(id);
            }
		};
		return me;
	};
	// 获取所有选中的节点的Value数组
	$.fn.getTSVs = function() {
		if (this[0].t) {
			return this[0].t.getSelectedValues();
		}
		return null;
	};
	// 获取所有选中的节点的Item数组
	$.fn.getTSNs = function() {
		if (this[0].t) {
			return this[0].t.getSelectedNodes();
		}
		return null;
	};
	$.fn.getTCT = function() {
		if (this[0].t) {
			return this[0].t.getCurrentItem();
		}
		return null;
	};
	$.fn.reflash = function(ItemOrItemId) {
		if (this[0].t) {
			return this[0].t.reflash(ItemOrItemId);
		}
	};
})(jQuery);