samer@0: package eg.util;
samer@0: import  samer.core.*;
samer@0: import  samer.core.shells.*;
samer@0: import  samer.core.types.*;
samer@0: import  samer.core.Agent.*;
samer@0: import  java.lang.reflect.*;
samer@0: import  java.util.*;
samer@0: 
samer@0: public class ClassInfo implements Agent, Observer
samer@0: {
samer@0: 	VString	clname = new VString("class");
samer@0: 	VBoolean	all = new VBoolean("all",false);;
samer@0: 	Class		cl;
samer@0: 
samer@0: 	public ClassInfo()
samer@0: 	{
samer@0: 		clname.addObserver(this);
samer@0: 		all.addObserver(this);
samer@0: 		Shell.register(this); 
samer@0: 		Shell.exposeCommands(this); 
samer@0: 	}
samer@0: 
samer@0: 	public void getCommands(Registry r) { 
samer@0: 		r.add("class").add("interfaces")
samer@0: 			.add("methods").add("fields").add("superclass")
samer@0: 			.add("verbose", all.value);
samer@0: 	}
samer@0: 
samer@0: 	public void execute(String cmd, Environment env) throws Exception
samer@0: 	{ 
samer@0: 		if (cmd.equals("class")) {
samer@0: 			clname.value = X.string(env.datum(),clname.value);
samer@0: 			clname.changed();
samer@0: 		} else if (cmd.equals("methods")) {
samer@0: 			Method		mths[];
samer@0: 
samer@0: 			if (all.value) mths = cl.getMethods();
samer@0: 			else				mths = cl.getDeclaredMethods();
samer@0: 				
samer@0: 			Shell.print("Methods: ");
samer@0: 			for (int i=0;i<mths.length; i++) {
samer@0: 				Shell.print("\t"+mths[i]);
samer@0: 			}
samer@0: 
samer@0: 		} else if (cmd.equals("fields")) {
samer@0: 			Field		flds[];
samer@0: 
samer@0: 			if (all.value) flds = cl.getFields();
samer@0: 			else				flds = cl.getDeclaredFields();
samer@0: 
samer@0: 			Shell.print("Fields: ");
samer@0: 			for (int i=0;i<flds.length; i++) {
samer@0: 				Shell.print("\t"+flds[i]);
samer@0: 			}
samer@0: 		} else if (cmd.equals("interfaces")) {
samer@0: 			Class		ifaces[] = cl.getInterfaces();
samer@0: 			Shell.print("Interfaces: ");
samer@0: 			for (int i=0;i<ifaces.length; i++) {
samer@0: 				Shell.print("\t"+ifaces[i]);
samer@0: 			}
samer@0: 		} else if (cmd.equals("superclass")) {
samer@0: 			setClass(cl.getSuperclass());
samer@0: 		} else if (cmd.equals("verbose")) {
samer@0: 			all.value = X._bool(env.datum(),!all.value);
samer@0: 			all.changed();
samer@0: 		}
samer@0: 	}
samer@0: 
samer@0: 	public void update(Observable o, Object src)
samer@0: 	{
samer@0: 		if (clname.equals(o) && src!=this) { // &&&
samer@0: 			try { setClass(clname.value); }
samer@0: 			catch (Exception ex) {}
samer@0: 		}
samer@0: 	}
samer@0: 
samer@0: 	private void setClass(String n) throws Exception {
samer@0: 		setClass(Class.forName(n));
samer@0: 	}
samer@0: 
samer@0: 	private void setClass(Class c) throws Exception
samer@0: 	{
samer@0: 		clname.value = c.getName();
samer@0: 		clname.changed(this);
samer@0: 		cl = c; 
samer@0: 
samer@0: 		Constructor cons[] = cl.getConstructors();
samer@0: 
samer@0: 		Shell.print("\nClass: "+cl);
samer@0: 		Shell.print("\textends "+cl.getSuperclass());
samer@0: 		Shell.print("constructors");
samer@0: 		for (int i=0;i<cons.length; i++) {
samer@0: 			Shell.print("\t"+cons[i]);
samer@0: 		}
samer@0: 	}
samer@0: }
samer@0: