www.pudn.com > Xiao5u_Exam_v2011627.rar > dtree.js, change:2010-11-22,size:12343b


/*--------------------------------------------------| 
| 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                               | 
|--------------------------------------------------*/ 
 
// Node object 
function Node(id, pid, name, url, title, target, icon, iconOpen, open) { 
	this.id = id; 
	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; 
}; 
 
// Tree object 
function dTree(objName) { 
	this.config = { 
		target					: null, 
		folderLinks			: true, 
		useSelection		: true, 
		useCookies			: true, 
		useLines				: true, 
		useIcons				: true, 
		useStatusText		: false, 
		closeSameLevel	: false, 
		inOrder					: false 
	} 
	this.icon = { 
		root				: 'images/left/base.gif', 
		folder			: 'images/left/folder.gif', 
		folderOpen	: 'images/left/folderopen.gif', 
		node				: 'images/left/page.gif', 
		empty				: 'images/left/empty.gif', 
		line				: 'images/left/line.gif', 
		join				: 'images/left/join.gif', 
		joinBottom	: 'images/left/joinbottom.gif', 
		plus				: 'images/left/plus.gif', 
		plusBottom	: 'images/left/plusbottom.gif', 
		minus				: 'images/left/minus.gif', 
		minusBottom	: 'images/left/minusbottom.gif', 
		nlPlus			: 'images/left/nolines_plus.gif', 
		quit			: 'images/left/quit.gif', 
		nlMinus			: 'images/left/nolines_minus.gif' 
	}; 
	this.obj = objName; 
	this.aNodes = []; 
	this.aIndent = []; 
	this.root = new Node(-1); 
	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; 
			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; 
		} 
		str += '<img align="absmiddle" 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; 
	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; 
}; 
 
// 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 align="absmiddle" border="0" 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 align="absmiddle" border="0" 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 align="absmiddle" border="0" 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); 
			if (eOld) 
			{ 
				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); 
		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; 
	} 
};