source: src/main/java/negotiator/parties/CounterOfferHumanNegotiationParty.java@ 126

package negotiator.parties;

import java.util.List;

import javax.swing.JOptionPane;

import genius.core.AgentID;
import genius.core.Bid;
import genius.core.SupportedNegotiationSetting;
import genius.core.actions.Accept;
import genius.core.actions.Action;
import genius.core.actions.EndNegotiation;
import genius.core.actions.Offer;
import genius.core.parties.AbstractNegotiationParty;
import genius.core.parties.NegotiationInfo;
import genius.core.utility.AdditiveUtilitySpace;

/**
 * @author W.Pasman, modified version of Dmytro's UIAgent
 */
public class CounterOfferHumanNegotiationParty
                extends AbstractNegotiationParty {
        private Action opponentAction = null;
        private EnterBidDialog2 ui = null;
        private Bid myPreviousBid = null;
        private Bid mostRecentOffer;

        /**
         * One agent will be kept alive over multiple sessions. Init will be called
         * at the start of each negotiation session.
         */
        @Override
        public void init(NegotiationInfo info) {
                super.init(info);
                System.out.println("init UIAgent");

                System.out.println("closing old dialog of ");
                if (ui != null) {
                        ui.dispose();
                        ui = null;
                }
        }

        @Override
        public void receiveMessage(AgentID sender, Action arguments) {
                this.opponentAction = arguments;

                if (opponentAction instanceof Offer) {
                        mostRecentOffer = ((Offer) opponentAction).getBid();
                }

                if (opponentAction instanceof Accept && sender != this.getPartyId()) {
                        JOptionPane.showMessageDialog(null,
                                        "" + sender + " accepted the last offer.");
                }

                if (opponentAction instanceof EndNegotiation) {
                        JOptionPane.showMessageDialog(null,
                                        "" + sender + " canceled the negotiation session");
                }
        }

        @Override
        public Action chooseAction(List<Class<? extends Action>> possibleActions) {
                if (ui != null) {
                        ui.dispose();
                        ui = null;
                }
                try {
                        ui = new EnterBidDialog2(this, getPartyId(), null, true,
                                        (AdditiveUtilitySpace) utilitySpace,
                                        possibleActions.contains(Accept.class) ? mostRecentOffer
                                                        : null);

                } catch (Exception e) {
                        System.out.println("Problem in UIAgent2.init:" + e.getMessage());
                        e.printStackTrace();
                }
                Action action = ui.askUserForAction(opponentAction, myPreviousBid,
                                mostRecentOffer);
                System.out.println("action = " + action);
                if ((action != null) && (action instanceof Offer)) {
                        myPreviousBid = ((Offer) action).getBid();
                }
                return action;
        }

        public SupportedNegotiationSetting getSupportedNegotiationSetting() {
                return SupportedNegotiationSetting.getLinearUtilitySpaceInstance();
        }

        @Override
        public String getDescription() {
                return "Simple Human user interface to place bids";
        }
}