/*
 * Created on Mar 17, 2005
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package fr.lifl.stc.stan.policy.defaultPolicy;

import fr.lifl.stc.stan.policy.ClassPolicy;
import fr.lifl.stc.stan.policy.Policy;

import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;

/**
 * @author dorina
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class DefaultClassPolicy implements ClassPolicy {
	
	private String className;
	Vector<String> secretAttrs;
	//vector of ClassPolicy
	Hashtable<String,ClassPolicy> superClasses;
	
	
	/**
	 * 
	 * @param className
	 */
	public DefaultClassPolicy(String className) {
		super();
		this.className = className;
		secretAttrs = new Vector<String>();
		superClasses = new Hashtable<String,ClassPolicy>();
	}
	
	/* (non-Javadoc)
	 * @see fr.lifl.rd2p.jits.tools.ea.policy.ClassPolicy#findAttribute(java.lang.String)
	 */
	public int findAttribute(String attribute) {
		if(secretAttrs.contains(attribute))
			return Policy.SECRET_ATTRIBUTE;
		
		Enumeration<String> e = superClasses.keys();
		while(e.hasMoreElements()){
			ClassPolicy cp = superClasses.get(e.nextElement());
			if(cp.findAttribute(attribute) == Policy.SECRET_ATTRIBUTE)
				return Policy.SECRET_ATTRIBUTE;
		}
		return Policy.PUBLIC_ATTRIBUTE;
	}
	
	public void add(String attribute) {
		if(secretAttrs.contains(attribute))
			return;
		secretAttrs.add(attribute);
	}
	
	public String toString(){
		String s = "**"+className+"**";
		for(int i=0;i<secretAttrs.size(); i++){
			s += "\t"+secretAttrs.elementAt(i);
		}
		return s;
	}
	
	public String getClassName(){
		return this.className;
	}
	
	public void addSuperClass(ClassPolicy c){
		if(c.getClassName() != this.getClassName())
			superClasses.put(c.getClassName(), c);
	}
	
	public void addSuperClasses(Hashtable<String, ClassPolicy> c){
		for(Enumeration<String> e = c.keys(); e.hasMoreElements(); )
			this.addSuperClass( c.get(e.nextElement()) );
	}
	
	public Hashtable<String,ClassPolicy> getSuperClasses() {
		return this.superClasses;
	}
	
	public boolean hasSuperClass(String className) {
		if(this.getClassName() != className)
			return superClasses.containsKey(className);
		return false;
	}
	
}