Modulize.java

package org.zkoss.zktest.bind.basic;

import java.util.LinkedList;
import java.util.List;
import java.util.Random;

import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.annotation.Command;
import org.zkoss.bind.annotation.Default;
import org.zkoss.bind.annotation.DependsOn;
import org.zkoss.bind.annotation.GlobalCommand;
import org.zkoss.bind.annotation.Init;
import org.zkoss.bind.annotation.NotifyChange;
import org.zkoss.bind.annotation.QueryParam;

public class Modulize {

	List<Module> modules = new LinkedList<Module>();
	boolean amount_set = false;
	int amount;
	
	Module selected;

	static Random r = new Random(System.currentTimeMillis());
	int newCount = 0;
	@Init
	public void init(@QueryParam("ms") @Default("1") int moduleSize) {
		for (int i = 0; i < moduleSize; i++) {
			modules.add(new Module1("Default " + i,r.nextInt(100)));
		}
		if(modules.size()>0){
			selected = modules.get(0);
		}
	}

	public List<Module> getModules() {
		return modules;
	}
	
	public Module getSelected(){
		return selected;
	}

	@DependsOn({"modules"})
	public int getModulesAmount() {
		if(amount_set){
			return amount;
		}
		amount = 0;
		for (Module m : modules) {
			amount += m.getAmount();
		}
		amount_set = true;
		return amount;
	}
	
	@Command @NotifyChange("selected")
	public void selectModule(@BindingParam("module") Module module){
		selected = module;
	}
	
	@Command @NotifyChange({"modules","selected"})
	public void removeModule(@BindingParam("module") Module module){
		modules.remove(module);
		if(selected == module){
			if(modules.size()>0){
				selected = modules.get(0);
			}else{
				selected = null;
			}
		}
		amount_set = false;
	}
	
	@Command @NotifyChange({"modules","selected"})
	public void addModule(@BindingParam("type") @Default("1") int type){
		Module m = null;
		switch(type){
		case 2:
			m = new Module2("Type2 "+newCount++,r.nextInt(10),r.nextInt(10));
			break;
		default:	
			m = new Module1("Type1 "+newCount++,r.nextInt(100));
		}
		modules.add(selected = m);
		amount_set = false;
	}
	
	
	@GlobalCommand @NotifyChange("modulesAmount")
	public void updateAmount(){
		amount_set = false;
	}
}