treeview.jsp

test for jsp application

<%@ page import="java.util.Vector,java.lang.StringBuffer;" %>
<%!


class NodeList{
	Vector v;
	int length=0;
	public NodeList(){
		v=new Vector();	
	}
		
	public void add(Node node){
		v.add(node);
		length++;
	}
	public void add(String text){
		add(new Node(text));
	}
	public Node item(int index){
		return (Node)v.get(index);
	}
}

class Node{
	public String text;
	public String href;
	public String target="";
	public String toolTip;
	public NodeList childNodes;
	public String imageUrl="";
	public int length=0;
	
	public Node(){
		childNodes = new NodeList();
	}	
	public Node(String text){
		this(text,"");
	}	
	public Node(String text,String href){
		this(text,href,"");
	}	
	public Node(String text,String href,String toolTip){
		this();
		this.text=text;
		this.href=href;
		this.toolTip=toolTip;
	}	
	
	public void add(Node node){
		childNodes.add(node);
		length++;
	}
	public void add(String text){
		add(new Node(text));
	}
}

class TreeView{
	private String folder="images";
	private String color="navy";	
	private NodeList nodes;
	private String target="";
	public int length=0;
	private StringBuffer buf;
	
	public TreeView(){
		nodes=new NodeList();
		buf  = new StringBuffer();
	}
	
	public void setImagesUrl(String url){
		this.folder = url;	
	}
	
	public void add(Node node){
		nodes.add(node);
		length++;
	}
	public void add(String text){
		add(new Node(text));
	}
	public Node createNode(String text){
		return (new Node(text));
	}
	public Node createNode(String text,String href,String toolTip){
		return (new Node(text,href,toolTip));
	}
	
	private void print(String text){
		buf.append(text);
	}
	
	
	public String getTree(){
		print("<script>function toggle(id,p){var myChild = document.getElementById(id);if(myChild.style.display!='block'){myChild.style.display='block';document.getElementById(p).className='folderOpen';}else{myChild.style.display='none';document.getElementById(p).className='folder';}}</script>");
		print("<style>ul.tree{display:none;margin-left:17px;}li.folder{list-style-image: url("+ folder +"/plus.gif);}li.folderOpen{list-style-image: url("+ folder +"/minus.gif);}li.file{list-style-image: url("+ folder +"/dot.gif);}a.treeview{color:"+ color +";font-family:verdana;font-size:8pt;}a.treeview:link {text-decoration:none;}a.treeview:visited{text-decoration:none;}a.treeview:hover {text-decoration:underline;}</style>");
		loopThru(nodes,"0");
		return buf.toString();
	}
	
	private void loopThru(NodeList nodeList, String parent){
		boolean hasChild;
		String style;
		
		if(parent!="0"){
			print("<ul class=tree id=\"N" + parent + "\">");
		}else{
			print("<ul id=\"N" + parent + "\">");
		}
		for (int i=0;i<nodeList.length;i++){
			Node node = nodeList.item(i);	
				
			if(node.childNodes.length>0){ 
				hasChild=true;	
			}else{
				hasChild=false;
			}
			
			if(node.imageUrl==""){
				style="";
			}else{
				style="style='list-style-image: url("+ node.imageUrl +");'";
			}				
			if(hasChild){
				print("<li "+ style +" class=folder id='P" + parent + i + "'><a class=treeview href=\"javascript:toggle('N" + parent + "_" + i + "','P" + parent + i + "')\">" + node.text + "</a>");
			}else{
				if(node.target==""){
					node.target=target;
				}
				print("<li "+ style +" class=file><a class=treeview href='" + node.href + "' target='" + node.target + "'  title=\"" + node.toolTip + "\">" + node.text + "</a>");
			}
			
			if(hasChild){		
				loopThru(node.childNodes,parent + "_" + i);
			}	
					
			print("</li>");
		}
		print("</ul>");
	}
}
%>