//初始化数据源里的数据以便后面的快速检索
MzTreeView.prototype.dataFormat = function()
{
var a = new Array();
for (var id in this.nodes) a[a.length] = id;
this.names = a.join(this._d + this._d);
this.totalNode = a.length; a = null;
};//在数据源检索所需的数据节点
//id 客户端节点对应的id
MzTreeView.prototype.load = function(id)
{
var node = this.node[id], d = this.divider, _d = this._d;
var sid = node.sourceIndex.substr(node.sourceIndex.indexOf(d) + d.length);
var reg = new RegExp("(^|"+_d+")"+ sid +d+"[^"+_d+d +"]+("+_d+"|$)", "g");
var cns = this.names.match(reg), tcn = this.node[id].childNodes; if (cns){
reg = new RegExp(_d, "g"); for (var i=0; i<cns.length; i++)
tcn[tcn.length] = this.nodeInit(cns[i].replace(reg, ""), id); }
node.isLoad = true;
};//初始化节点信息, 根据 this.nodes 数据源生成节点的详细信息
//sourceIndex 数据源中的父子节点组合的字符串 0_1
//parentId 当前树节点在客户端的父节点的 id
MzTreeView.prototype.nodeInit = function(sourceIndex, parentId)
{
this.index++;
var source= this.nodes[sourceIndex], d = this.divider;
var text = this.getAttribute(source, "text");
var hint = this.getAttribute(source, "hint");
var sid = sourceIndex.substr(sourceIndex.indexOf(d) + d.length);
this.node[this.index] =
{
"id" : this.index,
"text" : text,
"hint" : hint ? hint : text,
"icon" : this.getAttribute(source, "icon"),
"path" : this.node[parentId].path + d + this.index,
"isLoad": false,
"isExpand": false,
"parentId": parentId,
"parentNode": this.node[parentId],
"sourceIndex" : sourceIndex,
"childAppend" : ""
};
this.nodes[sourceIndex] = "index:"+ this.index +";"+ source;
this.node[this.index].hasChild = this.names.indexOf(this._d + sid + d)>-1;
if(this.node[this.index].hasChild) this.node[this.index].childNodes = [];
return this.node[this.index];
};//从XML格式字符串里提取信息
//source 数据源里的节点信息字符串(以后可以扩展对XML的支持)
//name 要提取的属性名
MzTreeView.prototype.getAttribute = function(source, name)
{
var reg = new RegExp("(^|;|\\s)"+ name +"\\s*:\\s*([^;]*)(\\s|;|$)", "i");
if (reg.test(source)) return RegExp.$2.replace(/[\x0f]/g, ";"); return "";
};//根据节点的详细信息生成HTML
//node 树在客户端的节点对象
//AtEnd 布尔值 当前要转换的这个节点是否为父节点的子节点集中的最后一项
MzTreeView.prototype.nodeToHTML = function(node, AtEnd)
{
var source = this.nodes[node.sourceIndex];
var target = this.getAttribute(source, "target");
var data = this.getAttribute(source, "data");
var url = this.getAttribute(source, "url");
if(!url) url = this.url;
if(data) url += (url.indexOf("?")==-1?"?":"&") + data;
if(!target) target = this.target; var id = node.id;
var HCN = node.hasChild, isRoot = node.parentId=="0";
if(isRoot && node.icon=="") node.icon = "root";
if(node.icon=="" || typeof(this.icons[node.icon])=="undefined")
node.icon = HCN ? "folder" : "file";
node.iconExpand = AtEnd ? "└" : "├"; var HTML = "<DIV noWrap='True'><NOBR>";
if(!isRoot)
{
node.childAppend = node.parentNode.childAppend + (AtEnd ? " " : "│");
if(this.wordLine)
{
HTML += "<SPAN>"+ node.parentNode.childAppend + (AtEnd ? "└" : "├") +"</SPAN>";
if(HCN) HTML += "<SPAN class='pm' id='"+ this.name +"_expand_"+ id +"'>+</SPAN>";
}
else
{
node.iconExpand = HCN ? AtEnd ? "PM2" : "PM1" : AtEnd ? "L2" : "L1";
HTML += "<SPAN>"+ this.word2image(node.parentNode.childAppend) +"<IMG "+
"align='absmiddle' id='"+ this.name +"_expand_"+ id +"' "+
"src='"+ this.icons[node.iconExpand].src +"' style='cursor: "+ (!node.hasChild ? "":
(this.navigator=="msie"||this.navigator=="opera"? "hand" : "pointer")) +"'></SPAN>";
}
}
HTML += "<IMG "+
"align='absMiddle' "+
"id='"+ this.name +"_icon_"+ id +"' "+
"src='"+ this.icons[node.icon].src +"'><A "+
"class='MzTreeview' hideFocus "+
"id='"+ this.name +"_link_"+ id +"' "+
"href='"+ url +"' "+
"target='"+ target +"' "+
"title='"+ node.hint +"' "+
"onfocus=\""+ this.name +".focusLink('"+ id +"')\" "+
"onclick=\"return "+ this.name +".nodeClick('"+ id +"')\">"+ node.text +
"</A></NOBR></DIV>";
if(isRoot && node.text=="") HTML = ""; HTML = "\r\n<SPAN id='"+ this.name +"_tree_"+ id +"'>"+ HTML
HTML +="<SPAN style='DISPLAY: none'></SPAN></SPAN>";
return HTML;
};//在使用图片的时候对 node.childAppend 的转换
MzTreeView.prototype.word2image = function(word)
{
var str = "";
for(var i=0; i<word.length; i++)
{
var img = "";
switch (word.charAt(i))
{
case "│" : img = "L4"; break;
case "└" : img = "L2"; break;
case " " : img = "empty"; break;
case "├" : img = "L1"; break;
case "─" : img = "L3"; break;
case "┌" : img = "L0"; break;
}
if(img!="")
str += "<IMG align='absMiddle' src='"+ this.icons[img].src +"' height='20'>";
}
return str;
}
//将某个节点下的所有子节点转化成详细的<HTML>元素表达
//id 树的客户端节点 id
MzTreeView.prototype.buildNode = function(id)
{
if(this.node[id].hasChild)
{
var tcn = this.node[id].childNodes, str = "";
for (var i=0; i<tcn.length; i++)
str += this.nodeToHTML(tcn[i], i==tcn.length-1);
var temp = this.getElementById(this.name +"_tree_"+ id).childNodes;
temp[temp.length-1].innerHTML = str;
}
};//聚集到客户端生成的某个节点上
//id 客户端树节点的id
MzTreeView.prototype.focusClientNode = function(id)
{
if(!this.currentNode) this.currentNode=this.node["0"]; var a = this.getElementById(this.name +"_link_"+ id); if(a){ a.focus();
var link = this.getElementById(this.name +"_link_"+ this.currentNode.id);
if(link)with(link.style){color=""; backgroundColor="";}
with(a.style){color = this.colors.highLightText;
backgroundColor = this.colors.highLight;}
this.currentNode= this.node[id];}
};//焦点聚集到树里的节点链接时的处理
//id 客户端节点 id
MzTreeView.prototype.focusLink= function(id)
{
if(this.currentNode && this.currentNode.id==id) return;
this.focusClientNode(id);
};//点击展开树节点的对应方法
MzTreeView.prototype.expand = function(id, sureExpand)
{
var node = this.node[id];
if (sureExpand && node.isExpand) return;
if (!node.hasChild) return;
var area = this.getElementById(this.name +"_tree_"+ id);
if (area) area = area.childNodes[area.childNodes.length-1];
if (area)
{
var icon = this.icons[node.icon];
var iconE = this.iconsExpand[node.icon];
var Bool = node.isExpand = sureExpand || area.style.display == "none";
var img = this.getElementById(this.name +"_icon_"+ id);
if (img) img.src = !Bool ? icon.src :typeof(iconE)=="undefined" ? icon.src : iconE.src;
var exp = this.icons[node.iconExpand];
var expE = this.iconsExpand[node.iconExpand];
var expand= this.getElementById(this.name +"_expand_"+ id);
if (expand)
{
if(this.wordLine) expand.innerHTML = !Bool ? "+" : "-";
else expand.src = !Bool ? exp.src : typeof(expE) =="undefined" ? exp.src : expE.src;
}
if(!Bool && this.currentNode.path.indexOf(node.path)==0 && this.currentNode.id!=id)
{
try{this.getElementById(this.name +"_link_"+ id).click();}
catch(e){this.focusClientNode(id);}
}
area.style.display = !Bool ? "none" : "block";//(this.navigator=="netscape" ? "block" : "");
if(!node.isLoad)
{
this.load(id);
if(node.id=="0") return;
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//当子节点过多时, 给用户一个正在加载的提示语句
if(node.hasChild && node.childNodes.length>200)
{
setTimeout(this.name +".buildNode('"+ id +"')", 1);
var temp = this.getElementById(this.name +"_tree_"+ id).childNodes;
temp[temp.length-1].innerHTML = "<DIV noWrap><NOBR><SPAN>"+ (this.wordLine ?
node.childAppend +"└" : this.word2image(node.childAppend +"└")) +"</SPAN>"+
"<IMG border='0' height='16' align='absmiddle' src='"+this.icons["file"].src+"'>"+
"<A style='background-Color: "+ this.colors.highLight +"; color: "+
this.colors.highLightText +"; font-size: 9pt'>请稍候...</A></NOBR></DIV>";
}
else this.buildNode(id);
}
}
};//节点链接单击事件处理方法
//id 客户端树节点的 id
MzTreeView.prototype.nodeClick = function(id)
{
var source = this.nodes[this.node[id].sourceIndex];
eval(this.getAttribute(source, "method"));
return !(!this.getAttribute(source, "url") && this.url=="#");
};//为配合系统初始聚集某节点而写的函数, 得到某节点在数据源里的路径
//sourceId 数据源里的节点 id
MzTreeView.prototype.getPath= function(sourceId)
{
Array.prototype.indexOf = function(item)
{
for(var i=0; i<this.length; i++)
{
if(this[i]==item) return i;
}
return -1;
};
var _d = this._d, d = this.divider;
var A = new Array(), id=sourceId; A[0] = id;
while(id!="0" && id!="")
{
var str = "(^|"+_d+")([^"+_d+d+"]+"+d+ id +")("+_d+"|$)";
if (new RegExp(str).test(this.names))
{
id = RegExp.$2.substring(0, RegExp.$2.indexOf(d));
if(A.indexOf(id)>-1) break;
A[A.length] = id;
}
else break;
}
return A.reverse();
};//在源代码里指定 MzTreeView 初始聚集到某个节点
//sourceId 节点在数据源里的 id
MzTreeView.prototype.focus = function(sourceId, defer)
{
if (!defer)
{
setTimeout(this.name +".focus('"+ sourceId +"', true)", 100);
return;
}
var path = this.getPath(sourceId);
if(path[0]!="0")
{
alert("节点 "+ sourceId +" 没有正确的挂靠有效树节点上!\r\n"+
"节点 id 序列 = "+ path.join(this.divider));
return;
}
var root = this.node["0"], len = path.length;
for(var i=1; i<len; i++)
{
if(root.hasChild)
{
var sourceIndex= path[i-1] + this.divider + path[i];
for (var k=0; k<root.childNodes.length; k++)
{
if (root.childNodes[k].sourceIndex == sourceIndex)
{
root = root.childNodes[k];
if(i<len - 1) this.expand(root.id, true);
else this.focusClientNode(root.id);
break;
}
}
}
}
};//树的单击事件处理函数
MzTreeView.prototype.clickHandle = function(e)
{
e = window.event || e; e = e.srcElement || e.target;
//alert(e.tagName)
switch(e.tagName)
{
case "IMG" :
if(e.id)
{
if(e.id.indexOf(this.name +"_icon_")==0)
this.focusClientNode(e.id.substr(e.id.lastIndexOf("_") + 1));
else if (e.id.indexOf(this.name +"_expand_")==0)
this.expand(e.id.substr(e.id.lastIndexOf("_") + 1));
}
break;
case "A" :
if(e.id) this.focusClientNode(e.id.substr(e.id.lastIndexOf("_") + 1));
break;
case "SPAN" :
if(e.className=="pm")
this.expand(e.id.substr(e.id.lastIndexOf("_") + 1));
break;
default :
if(this.navigator=="netscape") e = e.parentNode;
if(e.tagName=="SPAN" && e.className=="pm")
this.expand(e.id.substr(e.id.lastIndexOf("_") + 1));
break;
}
};//MzTreeView 双击事件的处理函数
MzTreeView.prototype.dblClickHandle = function(e)
{
e = window.event || e; e = e.srcElement || e.target;
if((e.tagName=="A" || e.tagName=="IMG")&& e.id)
{
var id = e.id.substr(e.id.lastIndexOf("_") + 1);
if(this.node[id].hasChild) this.expand(id);
}
};//回到树当前节点的父层节点
MzTreeView.prototype.upperNode = function()
{
if(!this.currentNode) return;
if(this.currentNode.id=="0" || this.currentNode.parentId=="0") return;
if (this.currentNode.hasChild && this.currentNode.isExpand)
this.expand(this.currentNode.id, false);
else this.focusClientNode(this.currentNode.parentId);
};//展开当前节点并
MzTreeView.prototype.lowerNode = function()
{
if (!this.currentNode) this.currentNode = this.node["0"];
if (this.currentNode.hasChild)
{
if (this.currentNode.isExpand)
this.focusClientNode(this.currentNode.childNodes[0].id);
else this.expand(this.currentNode.id, true);
}
}//聚集到树当前节点的上一节点
MzTreeView.prototype.pervNode = function()
{
if(!this.currentNode) return; var e = this.currentNode;
if(e.id=="0") return; var a = this.node[e.parentId].childNodes;
for(var i=0; i<a.length; i++){if(a[i].id==e.id){if(i>0){e=a[i-1];
while(e.hasChild){this.expand(e.id, true);
e = e.childNodes[e.childNodes.length - 1];}
this.focusClientNode(e.id); return;} else {
this.focusClientNode(e.parentId); return;}}}
};//聚集到树当前节点的下一节点
MzTreeView.prototype.nextNode = function()
{
var e = this.currentNode; if(!e) e = this.node["0"];
if (e.hasChild){this.expand(e.id, true);
this.focusClientNode(e.childNodes[0].id); return;}
while(typeof(e.parentId)!="undefined"){
var a = this.node[e.parentId].childNodes;
for(var i=0; i<a.length; i++){ if(a[i].id==e.id){
if(i<a.length-1){this.focusClientNode(a[i+1].id); return;}
else e = this.node[e.parentId];}}}
};//展开树的所有节点
MzTreeView.prototype.expandAll = function()
{
if(this.totalNode>500) if(
confirm("您是否要停止展开全部节点?\r\n\r\n节点过多!展开很耗时")) return;
if(this.node["0"].childNodes.length==0) return;
var e = this.node["0"].childNodes[0];
var isdo = t = false;
while(e.id != "0")
{
var p = this.node[e.parentId].childNodes, pn = p.length;
if(p[pn-1].id==e.id && (isdo || !e.hasChild)){e=this.node[e.parentId]; isdo = true;}
else
{
if(e.hasChild && !isdo)
{
this.expand(e.id, true), t = false;
for(var i=0; i<e.childNodes.length; i++)
{
if(e.childNodes[i].hasChild){e = e.childNodes[i]; t = true; break;}
}
if(!t) isdo = true;
}
else
{
isdo = false;
for(var i=0; i<pn; i++)
{
if(p[i].id==e.id) {e = p[i+1]; break;}
}
}
}
}
};//本树将要用动的图片的字义及预载函数
//path 图片存放的路径名
MzTreeView.prototype.setIconPath = function(path)
{
var k = 0, d = new Date().getTime();
for(var i in this.icons)
{
var tmp = this.icons[i];
this.icons[i] = new Image();
this.icons[i].src = path + tmp;
if(k==9 && (new Date().getTime()-d)>20)
this.wordLine = true; k++;
}
for(var i in this.iconsExpand)
{
var tmp = this.iconsExpand[i];
this.iconsExpand[i]=new Image();
this.iconsExpand[i].src = path + tmp;
}
};//设置树的默认链接
//url 默认链接 若不设置, 其初始值为 #
MzTreeView.prototype.setURL = function(url){this.url = url;};//设置树的默认的目标框架名 target
//target 目标框架名 若不设置, 其初始值为 _self
MzTreeView.prototype.setTarget = function(target){this.target = target;};
// -->
src="http://www.meizz.com/Web/Plugs/MzTreeView10.js"></script>
<base href="http://www.meizz.com/Web/">
<style>
A.MzTreeview
{
font-size: 9pt;
padding-left: 3px;
}
</style>
<script language="JavaScript">
var tree = new MzTreeView("tree"); tree.icons["property"] = "property.gif";
tree.icons["css"] = "collection.gif";
tree.icons["book"] = "book.gif";
tree.iconsExpand["book"] = "bookopen.gif"; //展开时对应的图片 tree.setIconPath("http://www.meizz.com/Icons/TreeView/"); //可用相对路径 tree.nodes["0_1"] = "text:WEB 编程";
tree.nodes["1_100"] = "text:代码示例; data:id=100";
tree.nodes["1_200"] = "text:梅花雪脚本控件集; data:id=200";
tree.nodes["1_310"] = "text:CSS; icon:css; data:id=310";
tree.nodes["1_320"] = "text:DHTML; data:id=320";
tree.nodes["1_300"] = "text:HTML; data:id=300";
tree.nodes["1_400"] = "text:JavaScript; icon:book; data:id=400";
tree.nodes["320_322"] = "text:属性; icon: property; data:id=322";
tree.nodes["320_323"] = "text:方法; data:id=323";
tree.nodes["320_324"] = "text:事件; icon:event; data:id=324";
tree.nodes["320_325"] = "text:集合; data:id=325";
tree.nodes["400_407"] = "text:对象; data:id=407";
tree.nodes["400_406"] = "text:方法; data:id=406";
tree.nodes["400_408"] = "text:运算符; data:id=408";
tree.nodes["400_409"] = "text:属性; data:id=409";
tree.nodes["407_1140"] = "text:Date; url:Article.asp; data:id=140";
tree.nodes["406_1127"] = "text:toString; url:Article.asp; data:id=127";
tree.nodes["408_1239"] = "text:||; url:Article.asp; data:id=239";
tree.nodes["409_1163"] = "text:E; url:Article.asp; data:id=163"; tree.setURL("Catalog.asp");
tree.setTarget("MzMain");
document.write(tree.toString()); //亦可用 obj.innerHTML = tree.toString();
</script>
1.树的快捷键不准确,参考下window的树
2.封装加入树的事件,在调用时重写它
3.加入树的编辑功能
4.点击数后的动作不一定都是连接,也可能是调用一个函数
5.似乎没有add,remove等方法,收起接点好象也没
对点击树的动作是一个连接, 我已经开放了接口的, 比如说你在节点里不设置 url 而设置 method
Tree.nodes["1_2"] = "text:text; mdthod:alert('haha')";
Tree.nodes["1_2"] = "text:text; mdthod: yourFunction()";
这样设置之后点击这个链接的时候就会执行你的代码, 而不触发链接了. 对于树的编辑功能我是这么想的: 要编辑, 那就肯定会牵涉到数据的保存, 下面的 add 和 remove 操作一样也会牵涉到数据保存, 要保存数据那就得回传服务器等操作, 会使树更进一步复杂, 当然要做编辑那绝对没有问题, 我只是想单纯地作一棵一次加载数据比较好用的树. 对于 remove 可以这样扩充:
MzTreeView.prototype.removeNode = function(id)
{
var d = this.divider, _d = this._d
var reg = new RegExp("(^|"+ _d +")([^"+d+"]+"+d+id+")("+ _d +"|$)", "g");
var a = this.names.match(reg);
if (a)
{
for(var i=0; i<a.length; i++)
{
var sourceNode = this.nodes[a[i].replace(new RegExp(_d, "g"), "")];
var clientId = this.getAttribute(sourceNode, "index");
if(clientId)
{
this.names = this.names.replace(a[i], "");
this.node[this.node[clientId].parentId].isLoad = false;
this.node[this.node[clientId].parentId].childNodes.length = 0;
this.expand(this.node[this.node[clientId].parentId].id, false);
}
else this.names = this.names.replace(a[i], "");
}
}
}
对于 Opera Netscape Mozilla 由于我没有安装更低版本的浏览器, 所以我没有测试, 不过我想它兼容的版本应该比我列出来的更低些 :)
在这里我无心挑起C/S与B/S之争, 这个论题在各个论坛里都论过了, 论烂了, 我只是想表达一下做B/S 项目开发人员的Browser 端开发的人的一种悲衷, 一种无奈.
我之所以要写这棵树, 我就是想减轻一点Browser 开发人员的辛苦, 对脚本的能力之弱的痛苦, 对各种浏览器的兼容的痛苦. 对于 Browser coder 真是太辛苦了, MS他们在根本上就已经削弱了脚本的能力, 就已经限制住了这批人的想象空间, 还要受到"正统的"程序员的轻视(至少在工资上就差了不只一个档次), 但是这些脚本 coder 们做的是什么苦力活你们知不知道呀, 他们做为一个脚本 coder要学多少门知识才能胜任? HTML CSS 脚本(JavaScript VBScript) DHTML 还有写代码的工具(比如DW FP EditPlus) 还有图片处理(PS) 还得拥有美学细胞.
我最近还会推出一批网页脚本控件, 如 ComboBox MenuBar PageControl PopupMenu 等, 为了我们辛苦的 Script Coder. 最后我还想推出一个 JavaScript Application Manager (JSAM) 以整体框架的形式解决B/S开发中最辛苦的工作(这个框架的创始人是万常华).
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期待