package org.apidesign.extensionpoint;

import java.util.ArrayList;

import java.util.Collection;

import java.util.Collections;

import java.util.List;

import javax.swing.JOptionPane;

import org.apidesign.extensionpoint.api.TipOfTheDay;

import org.openide.util.Lookup;

public class Main {

    public static void main(String[] args) {

        for (;;) {

            // BEGIN: extension.point.Query

            Collection<? extends TipOfTheDay> all = Lookup.getDefault().lookupAll(TipOfTheDay.class);

            List<TipOfTheDay> arr = new ArrayList<TipOfTheDay>(all);

            Collections.shuffle(arr);

            String msg;

            String title;

            int type;

            if (arr.isEmpty()) {

                msg = "I do not know what to say!";

                title = "No provider registered";

                type = JOptionPane.WARNING_MESSAGE;

            } else {

                msg = arr.get(0).sayHello();

                title = "Selected from " + arr.size() + " providers";

                type = JOptionPane.INFORMATION_MESSAGE;

            }

            // END: extension.point.Query

            String again = "Once Again";

            String exit = "Exit";

            String[] options = new String[] { again, exit };

            int ret = JOptionPane.showOptionDialog(null, msg, title, 0, type, null, options, exit);

            if (ret != 0) {

                break;

            }

        }

        System.exit(0);

    }

}