[struts-menu-devel] Dynamic Struts Menu

[Rahul Kulkarni]

Hello Everybody,

I have just started to use StrutsMenu. Its really gr8 thing.

While development to adjust my requirement I have added few things which I whould like to share with you all.

1) Generating MenuComponent Object dynamically.
MenuComponentBuilder is a utility class that can generate the MenuComponent from any object. This will help to provide dynamic Menus in web application.
[ attachments MenuComponentBuilder.java, Test program TestObj.java ]

2) Hook in MenuDisplayer.
I had a requirement by which on certain business conditions few MenuComponets where not supposed to be shown to user. For this I have
- Added an iterface called MenuObjectValidator.
- Modified BaseMenu to store the object from which the MenuComponent is generated.
- Modified UseMenuDisplayerTag to accpent implementation of MenuObjectValidator and set on displayerInstance; and this instance should call validate method on impl before processing a MenuComponent to be displyed.
[ attachment : MenuObjectValidator.java ]

Please let me know your suggestions on it.

Regards,
Rahul Kulkarni

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MenuComponentBuilder.java
Description: Binary data

MenuObjectValidator.java

Description: Binary data
/*
 * Copyright ©.
 */
package com.fgm.web.menu.util;

import java.io.*;
import java.util.*;
import com.fgm.web.menu.MenuComponent;


/**
 *
 * @author Rahul Kulkarni
 * @version $Revision$
 */
public class TestObj  {
    
    private String title;
    private String toolTip;
    private String id;
    
    private List sub;
    
	public TestObj(String id, String title, String toolTip) {
        this.id = id;
        this.title = title;
        this.toolTip = toolTip;
	}
    
    public String getTitle() {
        return title;
    }
    
    public String getToolTip() {
        return toolTip;
    }
    
    public String getId() {
        return id;
    }
    
    public List getSub() {
        return sub;
    }
    
    public void addSub(TestObj o) {
        if ( sub == null ) {
            sub = new ArrayList();
        }
        
        sub.add(o);
    }
    
	
	public static void main(String[] args) {
        
        TestObj root = new TestObj("1", "root", "root tooltip");
        TestObj  TestObj("1", "one", "one tooltip");
        TestObj two = new TestObj("1", "two", "two tooltip");
        TestObj three = new TestObj("1", "three", "three tooltip");
        
        one.addSub(three);
        root.addSub(one);
        root.addSub(two);
        
        MenuComponentBuilder mcb = new MenuComponentBuilder();
        
        Map repo = new HashMap();
        repo.put(mcb.OBJECT, root);
        repo.put(mcb.NAME, "rootTree");
        repo.put(mcb.TITLE, "getTitle");
        repo.put(mcb.TOOLTIP, "getTitle");
        repo.put(mcb.SUBELEMENTS, "getSub");
        
        Map params = new HashMap();
        params.put("id", "getId");
        repo.put(mcb.LINK_PARAMS, params);
        
        MenuComponent mc = mcb.buildMenuComponent(repo);
        System.out.print("* MC " + mc.getMenuComponents().length);
	}
	
}