dTree改造

/*--------------------------------------------------|

| dTree 2.05 | www.destroydrop.com/javascript/tree/ |

|---------------------------------------------------|

| Copyright (c) 2002-2003 Geir Landr?              |

|                                                   |

| This script can be used freely as long as all     |

| copyright messages are intact.                    |

|                                                   |

| Updated: 17.04.2003                               |

|--------------------------------------------------*/

//通过设定mytree.editFun增加修改链接JS函数，默认传递两个值，一个是节点ID，一个是节点NAME;
//通过设定mytree.editFun增加删除链接JS函数
//通过设定mytree.useInput='checkbox'设定多选框，通过设定useInput ='radio'设定单选框
//设定默认选定的值为mytree.setChecked('id,id,id');
//选择父节点，默认选择子节点
//var mytree = new dTree("mytree");
//var mytree = new dTree("mytree",0);
// Node object
//mytree.editFun='editCategory';修改的JS函数为function editCategory(id,name){}
	//mytree.delFun='delCategory';
	//mytree.associated=true;级联选择子节点
	//mytree.getValue()选中节点的(id1,id2,id3)
	//mytree.getText()选中节点名称的串（name1,name2,name3）
	//mytree.treeMode = 'special'; //general(default) or special'如果选中父节点，就不能选其子节点
	
	
	
	/**
	使用方法:
	var mytree = new dTree("mytree");//注意变量名称和参数必须相同
	mytree.add(id,parentId,name[,...]);
	在这里设置所有的config，选中的节点ID等
	
	document.write(mytree);
	
	*/

function Node(id, pid, name, check, url, title, target, icon, iconOpen, open) {

	this.id = id;
	
	this.check = check;
	
	this.pid = pid;

	this.name = name;

	this.url = url;

	this.title = title;

	this.target = target;

	this.icon = icon;

	this.iconOpen = iconOpen;

	this._io = open || false;

	this._is = false;

	this._ls = false;

	this._hc = false;

	this._ai = 0;

	this._p;
	
	this.pNode;
	this.cNode = new Array();

};



// Tree object

function dTree(objName,rootId) {
	this.image_parent_dir = "../dtree/";
	//修改JS函数名称
	this.editFun = '';
	//删除JS函数名称
	this.delFun = '';
	//是否选用多选框checkbox，或单选框radio
	this.useInput = '';
	
	//选择模式
	this.treeMode = 'general'; //general or special'
	
	//是否进行关联选择
	this.associated = false;
	
	this.config = {

		target					: null,

		folderLinks			: true,

		useSelection		: true,

		useCookies			: false,

		useLines				: true,

		useIcons				: true,

		useStatusText		: false,

		closeSameLevel	: false,

		inOrder					: false

	}

	this.icon = {

		root				: this.image_parent_dir+'img/base.gif',

		folder			: this.image_parent_dir+'img/folder.gif',

		folderOpen	: this.image_parent_dir+'img/folderopen.gif',

		node				: this.image_parent_dir+'img/page.gif',

		empty				: this.image_parent_dir+'img/empty.gif',

		line				:this.image_parent_dir+ 'img/line.gif',

		join				: this.image_parent_dir+'img/join.gif',

		joinBottom	: this.image_parent_dir+'img/joinbottom.gif',

		plus				: this.image_parent_dir+'img/plus.gif',

		plusBottom	: this.image_parent_dir+'img/plusbottom.gif',

		minus				:this.image_parent_dir+ 'img/minus.gif',

		minusBottom	: this.image_parent_dir+'img/minusbottom.gif',

		nlPlus			:this.image_parent_dir+ 'img/nolines_plus.gif',

		nlMinus			:this.image_parent_dir+ 'img/nolines_minus.gif'

	};

	this.obj = objName;

	this.aNodes = [];

	this.aIndent = [];
	if(rootId && !isNaN(parseInt(rootId))){
		this.root = new Node(parseInt(rootId));
	}else{
		this.root = new Node(0);
	}
	this.selectedNode = null;

	this.selectedFound = false;

	this.completed = false;
	

};



// Adds a new node to the node array

dTree.prototype.add = function(id, pid, name, url, title, target, icon, iconOpen, open) {

	this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, open);

};



// Open/close all nodes

dTree.prototype.openAll = function() {

	this.oAll(true);

};

dTree.prototype.closeAll = function() {

	this.oAll(false);

};



// Outputs the tree to the page

dTree.prototype.toString = function() {

	var str = '<div class="dtree">\n';

	if (document.getElementById) {

		if (this.config.useCookies) this.selectedNode = this.getSelected();

		str += this.addNode(this.root);

	} else str += 'Browser not supported.';

	str += '</div>';

	if (!this.selectedFound) this.selectedNode = null;

	this.completed = true;

	return str;

};



// Creates the tree structure

dTree.prototype.addNode = function(pNode) {

	var str = '';

	var n=0;

	if (this.config.inOrder) n = pNode._ai;

	for (n; n<this.aNodes.length; n++) {

		if (this.aNodes[n].pid == pNode.id) {

			var cn = this.aNodes[n];

			cn._p = pNode;

			cn._ai = n;
			
			pNode.cNode[pNode.cNode.length] = cn;
			
			this.setCS(cn);

			if (!cn.target && this.config.target) cn.target = this.config.target;

			if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id);

			if (!this.config.folderLinks && cn._hc) cn.url = null;

			if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound) {

					cn._is = true;

					this.selectedNode = n;

					this.selectedFound = true;

			}

			str += this.node(cn, n);

			if (cn._ls) break;

		}

	}

	return str;

};



// Creates the node icon, url and text

dTree.prototype.node = function(node, nodeId) {

	var str = '<div class="dTreeNode">' + this.indent(node, nodeId);

	if (this.config.useIcons) {

		if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root : ((node._hc) ? this.icon.folder : this.icon.node);

		if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen : this.icon.node;

		if (this.root.id == node.pid) {

			node.icon = this.icon.root;

			node.iconOpen = this.icon.root;

		}
		if (this.useInput && this.useInput=='checkbox') {
		//  onclick='alert(nodeId)'
			str += "<input id='c" + this.obj + node.id + "'  name='c" + this.obj +"' ";
			
			str += " onclick='javascript: " + this.obj + ".checkNode(" + node.id + ")' ";
			
			str += " "+(node.check === "true" ? "checked='checked'" : "");
			str += "type='checkbox'  value='"+node.id+"' />";
			//str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" style="display:none;" />';
		}else if(this.useInput && this.useInput=='radio'){
			str += "<input id='c" + this.obj + node.id + "'  type='radio' name='c" + this.obj +"' ";
			str += (node.check === "true" ? "checked='checked'" : "");
			str += " onclick='javascript: " + this.obj + ".checkNodeR(" + node.id + ")' ";
			str +=" value='"+node.id+"' />";
			//str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" style="display:none;" />';
		} else {
			str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />';
		}
	}

	if (node.url) {

		str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" href="' + node.url + '"';

		if (node.title) str += ' title="' + node.title + '"';

		if (node.target) str += ' target="' + node.target + '"';

		if (this.config.useStatusText) str += ' onmouseover="window.status=\'' + node.name + '\';return true;" onmouseout="window.status=\'\';return true;" ';

		if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc))

			str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"';

		str += '>';

	}

	else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)

		str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="node">';

	str += node.name;
	
	//增加修改链接
	if(this.editFun){
		str += '&nbsp;&nbsp;<a href="#" onclick="'+this.editFun+'('+node.id+',\''+node.name+'\');">修改</a>';
	}
	//增加删除链接
	if(this.delFun){
		str += '&nbsp;&nbsp;<a href="#" onclick="'+this.delFun+'('+node.id+',\''+node.name+'\');">删除</a>';
	}
	if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';

	str += '</div>';

	if (node._hc) {

		str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';

		str += this.addNode(node);

		str += '</div>';

	}

	this.aIndent.pop();

	return str;

};
// Get current node
dTree.prototype.getNode = function (nodeId) {
	for (var n = 0; n < this.aNodes.length; n++) {
		if (this.aNodes[n].id === nodeId) {
			return this.aNodes[n];
			break;
		}
	}
};


// Get all selected nodes value (e.g. 1,2,3,4,5)
dTree.prototype.getValue = function () {
	var value = new Array();
	var obj;
	for (var n = 0; n < this.aNodes.length; n++) {
		obj = document.getElementById("")
		if (this.aNodes[n].check === "true" || this.aNodes[n].check === true) {
			value[value.length] = this.aNodes[n].id;
		}
	}
	return value;
};

// Get all selected nodes text (e.g. a,b,c,d,e)
dTree.prototype.getText = function () {
	var value = new Array();
	for (var n = 0; n < this.aNodes.length; n++) {
		if (this.aNodes[n].check === "true" || this.aNodes[n].check === true) {
			value[value.length] = this.aNodes[n].name;
		}
	}
	return value;
};
//check by set string style like 'id;id;id'
dTree.prototype.setChecked = function (checkNodeId) {
	if(checkNodeId){
		var idArr = checkNodeId.split(",");
		for(var n = 0; n < idArr.length; n++){
			
			var tmpNode = this.getNode(parseInt(idArr[n]));
			
			if(tmpNode){
				tmpNode.check = "true";
			}
		}
	}
	
};
// type is checkbox
dTree.prototype.checkNode = function(nodeId) {
    var check = document.getElementById(("c" + this.obj) + nodeId);
    var node = this.getNode(nodeId);
    node.check = check.checked;
	//是否要进行级联，选择子节点
	if(this.associated){
		if (check.checked) {
			if (this.treeMode == "special") {
				this.enableChildreNode(node, true);
			}
			else {
				this.checkChildreNode(node, true);
			}
			//this.checkParentNode(node, true);
		} else {
			if (this.treeMode == "special") {
				this.enableChildreNode(node, false);
			}
			else {
				this.checkChildreNode(node, false);
			}
		}
	}
};

// type is radio
dTree.prototype.checkNodeR = function(nodeId) {
	for (var n = 0; n < this.aNodes.length; n++) {
		if (this.aNodes[n].id === nodeId) {
			this.aNodes[n].check = true;
		}else{
			this.aNodes[n].check = false;	
		}
	}
	
	
};

// Check all child nodes of the current node (recursive)
dTree.prototype.checkChildreNode = function (node, check) {
	for (var i = 0; i < node.cNode.length; i++) {
	    var pCheck = document.getElementById(("c" + this.obj) + node.cNode[i].id);
		if (pCheck && !pCheck.disabled) {
			pCheck.checked = check;
			node.cNode[i].check = check;
		}
		if (node.cNode[i].cNode.length > 0) {
			this.checkChildreNode(node.cNode[i], check);
		}
	}
};

dTree.prototype.enableChildreNode = function(node, check) {
    for (var i = 0; i < node.cNode.length; i++) {
        var pCheck = document.getElementById(("c" + this.obj) + node.cNode[i].id);
        if (pCheck) {
            pCheck.disabled = check;
            node.cNode[i].check = pCheck.checked = (check && !pCheck.disabled);

        }
        if (node.cNode[i].cNode.length > 0) {
            this.enableChildreNode(node.cNode[i], check);
        }
    }
}

// Adds the empty and line icons

dTree.prototype.indent = function(node, nodeId) {

	var str = '';

	if (this.root.id != node.pid) {

		for (var n=0; n<this.aIndent.length; n++)

			str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" alt="" />';

		(node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);

		if (node._hc) {

			str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');"><img id="j' + this.obj + nodeId + '" src="';

			if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus;

			else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) );

			str += '" alt="" /></a>';

		} else str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" alt="" />';

	}

	return str;

};



// Checks if a node has any children and if it is the last sibling

dTree.prototype.setCS = function(node) {

	var lastId;

	for (var n=0; n<this.aNodes.length; n++) {

		if (this.aNodes[n].pid == node.id) node._hc = true;

		if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id;

	}

	if (lastId==node.id) node._ls = true;

};



// Returns the selected node

dTree.prototype.getSelected = function() {

	var sn = this.getCookie('cs' + this.obj);

	return (sn) ? sn : null;

};



// Highlights the selected node

dTree.prototype.s = function(id) {

	if (!this.config.useSelection) return;

	var cn = this.aNodes[id];

	if (cn._hc && !this.config.folderLinks) return;

	if (this.selectedNode != id) {

		if (this.selectedNode || this.selectedNode==0) {

			eOld = document.getElementById("s" + this.obj + this.selectedNode);

			eOld.className = "node";

		}

		eNew = document.getElementById("s" + this.obj + id);

		eNew.className = "nodeSel";

		this.selectedNode = id;

		if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id);

	}

};



// Toggle Open or close

dTree.prototype.o = function(id) {

	var cn = this.aNodes[id];

	this.nodeStatus(!cn._io, id, cn._ls);

	cn._io = !cn._io;

	if (this.config.closeSameLevel) this.closeLevel(cn);

	if (this.config.useCookies) this.updateCookie();

};



// Open or close all nodes

dTree.prototype.oAll = function(status) {

	for (var n=0; n<this.aNodes.length; n++) {

		if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id) {

			this.nodeStatus(status, n, this.aNodes[n]._ls)

			this.aNodes[n]._io = status;

		}

	}

	if (this.config.useCookies) this.updateCookie();

};



// Opens the tree to a specific node

dTree.prototype.openTo = function(nId, bSelect, bFirst) {

	if (!bFirst) {

		for (var n=0; n<this.aNodes.length; n++) {

			if (this.aNodes[n].id == nId) {

				nId=n;

				break;

			}

		}

	}

	var cn=this.aNodes[nId];

	if (cn.pid==this.root.id || !cn._p) return;

	cn._io = true;

	cn._is = bSelect;

	if (this.completed && cn._hc) this.nodeStatus(true, cn._ai, cn._ls);

	if (this.completed && bSelect) this.s(cn._ai);

	else if (bSelect) this._sn=cn._ai;

	this.openTo(cn._p._ai, false, true);

};



// Closes all nodes on the same level as certain node

dTree.prototype.closeLevel = function(node) {

	for (var n=0; n<this.aNodes.length; n++) {

		if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc) {

			this.nodeStatus(false, n, this.aNodes[n]._ls);

			this.aNodes[n]._io = false;

			this.closeAllChildren(this.aNodes[n]);

		}

	}

}



// Closes all children of a node

dTree.prototype.closeAllChildren = function(node) {

	for (var n=0; n<this.aNodes.length; n++) {

		if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc) {

			if (this.aNodes[n]._io) this.nodeStatus(false, n, this.aNodes[n]._ls);

			this.aNodes[n]._io = false;

			this.closeAllChildren(this.aNodes[n]);		

		}

	}

}



// Change the status of a node(open or closed)

dTree.prototype.nodeStatus = function(status, id, bottom) {

	eDiv	= document.getElementById('d' + this.obj + id);

	eJoin	= document.getElementById('j' + this.obj + id);

	if (this.config.useIcons) {

		eIcon	= document.getElementById('i' + this.obj + id);
		if(eIcon)
			eIcon.src = (status) ? this.aNodes[id].iconOpen : this.aNodes[id].icon;

	}

	eJoin.src = (this.config.useLines)?

	((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)):

	((status)?this.icon.nlMinus:this.icon.nlPlus);

	eDiv.style.display = (status) ? 'block': 'none';

};





// [Cookie] Clears a cookie

dTree.prototype.clearCookie = function() {

	var now = new Date();

	var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);

	this.setCookie('co'+this.obj, 'cookieValue', yesterday);

	this.setCookie('cs'+this.obj, 'cookieValue', yesterday);

};



// [Cookie] Sets value in a cookie

dTree.prototype.setCookie = function(cookieName, cookieValue, expires, path, domain, secure) {

	document.cookie =

		escape(cookieName) + '=' + escape(cookieValue)

		+ (expires ? '; expires=' + expires.toGMTString() : '')

		+ (path ? '; path=' + path : '')

		+ (domain ? '; domain=' + domain : '')

		+ (secure ? '; secure' : '');

};



// [Cookie] Gets a value from a cookie

dTree.prototype.getCookie = function(cookieName) {

	var cookieValue = '';

	var posName = document.cookie.indexOf(escape(cookieName) + '=');

	if (posName != -1) {

		var posValue = posName + (escape(cookieName) + '=').length;

		var endPos = document.cookie.indexOf(';', posValue);

		if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos));

		else cookieValue = unescape(document.cookie.substring(posValue));

	}

	return (cookieValue);

};



// [Cookie] Returns ids of open nodes as a string

dTree.prototype.updateCookie = function() {

	var str = '';

	for (var n=0; n<this.aNodes.length; n++) {

		if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id) {

			if (str) str += '.';

			str += this.aNodes[n].id;

		}

	}

	this.setCookie('co' + this.obj, str);

};



// [Cookie] Checks if a node id is in a cookie

dTree.prototype.isOpen = function(id) {

	var aOpen = this.getCookie('co' + this.obj).split('.');

	for (var n=0; n<aOpen.length; n++)

		if (aOpen[n] == id) return true;

	return false;

};



// If Push and pop is not implemented by the browser

if (!Array.prototype.push) {

	Array.prototype.push = function array_push() {

		for(var i=0;i<arguments.length;i++)

			this[this.length]=arguments[i];

		return this.length;

	}

};

if (!Array.prototype.pop) {

	Array.prototype.pop = function array_pop() {

		lastElement = this[this.length-1];

		this.length = Math.max(this.length-1,0);

		return lastElement;

	}

};