www.gusucode.com > JSP 读取数据库并树形列表展示源码程序 > JSP 读取数据库并树形列表展示源码程序\WebRoot\script\MzTreeView10.js
<!--
/*---------------------------------------------------------------------------*\
| Subject: Web TreeView Class |
| Version: 1.0 |
| Author: 黄方荣【meizz】【梅花雪】 |
| FileName: MzTreeView.js |
| Created: 2004-10-18 |
| LastModified: 2005-03-10 |
| Download: http://www.meizz.com/Web/Download/MzTreeView10.rar |
| Explain: http://www.meizz.com/Web/Article.asp?id=436 |
| Demo: http://www.meizz.com/Web/Demo/MzTreeView10.htm |
| |
| You may use this code on your item |
| this entire copyright notice appears unchanged |
| and you clearly display a link to http://www.meizz.com/ |
| |
|-----------------------------------------------------------------------------|
| MSN: huangfr@msn.com QQ: 112889082 http://www.meizz.com |
| CSDN Community ID: meizz Copyright (c) 2004-2005 meizz |
\*---------------------------------------------------------------------------*/
//MzTreeView1.0网页树类, 在实例化的时候请把实例名作参数传递进来
function MzTreeView(Tname)
{
if(typeof(Tname) != "string" || Tname == "")
throw(new Error('创建类实例的时候请把类实例的引用变量名传递进来！'));
//【property】
this.url = "#";
this.target = "_self";
this.name = Tname;
this.wordLine = false;
this.currentNode = null;
this.useArrow = true;
this.nodes = {};
this.node = {};
this.names = "";
this._d = "\x0f";
this.index = 0;
this.divider = "_";
this.rootId = "-1";
this.colors =
{
"highLight" : "#0A246A",
"highLightText" : "#FFFFFF",
"mouseOverBgColor" : "#D4D0C8"
};
this.icons = {
L0 : 'L0.gif', //┏
L1 : 'L1.gif', //┣
L2 : 'L2.gif', //┗
L3 : 'L3.gif', //━
L4 : 'L4.gif', //┃
PM0 : 'P0.gif', //＋┏
PM1 : 'P1.gif', //＋┣
PM2 : 'P2.gif', //＋┗
PM3 : 'P3.gif', //＋━
empty : 'L5.gif', //空白图
root : 'root.gif', //缺省的根节点图标
folder : 'folder.gif', //缺省的文件夹图标
file : 'file.gif', //缺省的文件图标
exit : 'exit.gif'
};
this.iconsExpand = { //存放节点图片在展开时的对应图片
PM0 : 'M0.gif', //－┏
PM1 : 'M1.gif', //－┣
PM2 : 'M2.gif', //－┗
PM3 : 'M3.gif', //－━
folder : 'folderopen.gif',
exit : 'exit.gif'
};
//扩展 document.getElementById(id) 多浏览器兼容性
//id 要查找的对象 id
this.getElementById = function(id)
{
if (typeof(id) != "string" || id == "") return null;
if (document.getElementById) return document.getElementById(id);
if (document.all) return document.all(id);
try {return eval(id);} catch(e){ return null;}
}
//MzTreeView 初始化入口函数
this.toString = function()
{
this.browserCheck();
this.dataFormat();
this.setStyle();
this.node["0"] =
{
"id": "0",
"path": this.rootId,
"isLoad": false,
"childNodes": [],
"childAppend": "",
"sourceIndex": this.rootId
};
this.load("0");
var rootCN = this.node["0"].childNodes;
var str = "<A id='"+ this.name +"_RootLink' href='#' style='DISPLAY: none'></A>";
if(rootCN.length>0)
{
this.node["0"].hasChild = true;
for(var i=0; i<rootCN.length; i++)
str += this.nodeToHTML(rootCN[i], i==rootCN.length-1);
//setTimeout(this.name +".expand('"+ rootCN[0].id +"', true); "+
// this.name +".focusClientNode('"+ rootCN[0].id +"'); "+ this.name +".atRootIsEmpty()",10);
setTimeout(this.name +".atRootIsEmpty();"+ this.name +".focusClientNode('"+ rootCN[0].id +"'); ",10);
}
if (this.useArrow) //使用方向键控制跳转到上级下级父级子级节点
{
if (document.attachEvent)
document.attachEvent("onkeydown", this.onkeydown);
else if (document.addEventListener)
document.addEventListener('keydown', this.onkeydown, false);
}
return "<DIV class='MzTreeView' "+
"onclick='"+ this.name +".clickHandle(event)' "+
"ondblclick='"+ this.name +".dblClickHandle(event)' "+
">"+ str +"</DIV>";
};
this.onkeydown= function(e)
{
e = window.event || e; var key = e.keyCode || e.which;
switch(key)
{
case 37 : eval(Tname).upperNode(); break; //Arrow left, shrink child node
case 38 : eval(Tname).pervNode(); break; //Arrow up
case 39 : eval(Tname).lowerNode(); break; //Arrow right, expand child node
case 40 : eval(Tname).nextNode(); break; //Arrow down
}
};
}
//浏览器类型及版本检测
MzTreeView.prototype.browserCheck = function()
{
var ua = window.navigator.userAgent.toLowerCase(), bname;
if(/msie/i.test(ua))
{
this.navigator = /opera/i.test(ua) ? "opera" : "";
if(!this.navigator) this.navigator = "msie";
}
else if(/gecko/i.test(ua))
{
var vendor = window.navigator.vendor.toLowerCase();
if(vendor == "firefox") this.navigator = "firefox";
else if(vendor == "netscape") this.navigator = "netscape";
else if(vendor == "") this.navigator = "mozilla";
}
else this.navigator = "msie";
if(window.opera) this.wordLine = false;
};
//给 TreeView 树加上样式设置
MzTreeView.prototype.setStyle = function()
{
/*
width: 16px; \
height: 16px; \
width: 20px; \
height: 20px; \
*/
var style = "<style>"+
"DIV.MzTreeView DIV IMG{border: 0px solid #FFFFFF;}"+
"DIV.MzTreeView DIV SPAN IMG{border: 0px solid #FFFFFF;}";
if(this.wordLine)
{
style +="\
DIV.MzTreeView DIV\
{\
height: 20px;"+
(this.navigator=="firefox" ? "line-height: 20px;" : "" ) +
(this.navigator=="netscape" ? "" : "overflow: hidden;" ) +"\
}\
DIV.MzTreeView DIV SPAN\
{\
vertical-align: middle; font-size: 21px; height: 20px; color: #D4D0C8; cursor: default;\
}\
DIV.MzTreeView DIV SPAN.pm\
{\
width: "+ (this.navigator=="msie"||this.navigator=="opera" ? "11" : "9") +"px;\
height: "+ (this.navigator=="netscape"?"9":(this.navigator=="firefox"?"10":"11")) +"px;\
font-size: 7pt;\
overflow: hidden;\
margin-left: -16px;\
margin-right: 5px;\
color: #000080; \
vertical-align: middle;\
border: 1px solid #D4D0C8;\
cursor: "+ (this.navigator=="msie" ? "hand" : "pointer") +";\
padding: 0 2px 0 2px;\
text-align: center;\
background-color: #F0F0F0;\
}";
}
style += "<\/style>";
/*alert(document.getElementsByTagName("HEAD")[0].innerHTML);
if(document.body)
{
var head = document.getElementsByTagName("HEAD")[0];
head.innerHTML = head.innerHTML + style;
}
else */
document.write(style);
};
//当根节点为空的时候做的处理
MzTreeView.prototype.atRootIsEmpty = function()
{
var RCN = this.node["0"].childNodes;
for(var i=0; i<RCN.length; i++)
{
if(!RCN[i].isLoad) this.expand(RCN[i].id);
if (RCN[i].text=="")
{
var node = RCN[i].childNodes[0], HCN = node.hasChild;
if(this.wordLine)
{
var span = this.getElementById(this.name +"_tree_"+ node.id);
span = span.childNodes[0].childNodes[0].childNodes[0];
span.innerHTML = RCN[i].childNodes.length>1 ? "┌" : "─";
}
else
{
node.iconExpand = RCN[i].childNodes.length>1 ? HCN ? "PM0" : "L0" : HCN ? "PM3" : "L3"
this.getElementById(this.name +"_expand_"+ node.id).src = this.icons[node.iconExpand].src;
}
}
}
};
//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, ";").replace(/\'/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;
//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]!=this.rootId)
{
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)
{//使节点图片单击打开
//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" :
//使节点链接单击打开
//if(e.id) this.focusClientNode(e.id.substr(e.id.lastIndexOf("_") + 1));
if(e.id) this.expand(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;};
// -->