newticketauction.java

j2me Demos for example

/*
 *
 * Copyright (c) 2007, Sun Microsystems, Inc.
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of Sun Microsystems nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package example.auction;

import java.util.*;

import javax.microedition.lcdui.*;
import javax.microedition.lcdui.List;
import javax.microedition.midlet.*;


public class NewTicketAuction extends MIDlet implements CommandListener {
    // Wait for 2sec
    static final int DefaultTimeout = 2000;
    static final Command BACK_CMD = new Command("Back", Command.BACK, 1);
    static final Command SAVE_CMD = new Command("Save", Command.SCREEN, 2);
    static final Command NEXT_CMD = new Command("Next", Command.SCREEN, 2);
    static final Command SUBMIT_CMD = new Command("Submit", Command.ITEM, 2);
    static final Command AUCTION_CMD = new Command("Auction", Command.ITEM, 2);
    static final Command CANCEL_CMD = new Command("Cancel", Command.CANCEL, 1);
    static final Command STOP_CMD = new Command("Stop", Command.STOP, 1);
    static final Command EXIT_CMD = new Command("Exit", Command.EXIT, 1);

    // commands for Band Screen bandForm
    static final Command SHOW_CMD = new Command("Show Auctions", Command.SCREEN, 1);
    static final Command ADD_CMD = new Command("Add Bands", Command.SCREEN, 1);
    static final Command RMV_CMD = new Command("Remove Bands", Command.SCREEN, 2);
    static final Command SETTING_CMD = new Command("Settings", Command.SCREEN, 3);

    // commands for  Auction Screen ticketList
    static final Command SHOW_INFO_CMD = new Command("Show More Info", Command.ITEM, 1);
    static final Command MAKE_BID_CMD = new Command("Make a Bid", Command.ITEM, 2);
    static final Command SET_ALERT_CMD = new Command("Set an Alert", Command.ITEM, 3);

    // command for Bid screen ticketForm
    static final Command BAND_CMD = new Command("Bands", Command.SCREEN, 1);
    Display display;

    /** user interface alert component. */
    Alert splashScreenAlert;
    Image splashScreen;
    boolean imageLoaded;
    Band band = new Band();
    Login login = new Login();
    TextBox addBand;
    RmBand rmBand = new RmBand();
    List mainMenu; // bandList, ticketList;
    List cateMenu; // bandList, ticketList;
    List ticketList; // bandList, ticketList;
    Ticker ticker;
    Alert notImpl;
    Alert savedMsg;
    Alert alertMsg;
    Form band_ticket_Form;
    Form ticketForm;
    Form enterForm;
    Form bidForm;
    Form submitMsg;
    TextField enterText;
    ChoiceGroup bandCg;
    ChoiceGroup auctionCg;
    StringItem auctionName;
    UpdateAlert updateAlert = new UpdateAlert();
    Gauge submitGauge;
    Timer TimerService;
    SetMenuForm setMenu2 = new SetMenuForm();

    // Band Name and Index number of the selected band in
    // Band Screen band_ticket_Form
    String _bandName;
    int _bandIndex = 0;
    private boolean firstTime;

    public NewTicketAuction() {
        display = Display.getDisplay(this);
        notImpl = new Alert("Sorry!!!", "Not Implemented", null, null);

        savedMsg = new Alert(null, "Your new settings have been saved!", null, null);

        alertMsg = new Alert(null, "Your alerts have been saved!", null, null);

        submitGauge = new Gauge("", false, 100, 0);
        submitMsg = new Form("Submitting bid...");
        submitMsg.append(submitGauge);
        submitMsg.addCommand(STOP_CMD);
        submitMsg.setCommandListener(this);

        ticker = new Ticker("");
        ticker.setString(band.toTickerString(null));

        band_ticket_Form = new Form("Welcome To Tickets");

        band_ticket_Form.addCommand(SHOW_INFO_CMD);
        band_ticket_Form.addCommand(MAKE_BID_CMD);
        band_ticket_Form.addCommand(SET_ALERT_CMD);

        band_ticket_Form.addCommand(ADD_CMD);
        band_ticket_Form.addCommand(RMV_CMD);
        band_ticket_Form.addCommand(SETTING_CMD);
        band_ticket_Form.addCommand(EXIT_CMD);
        band_ticket_Form.setCommandListener(this);
        band_ticket_Form.setTicker(ticker);

        // bandCg = new ChoiceGroup("Choose a Band", Choice.EXCLUSIVE);
        bandCg = new ChoiceGroup("Choose a Band", Choice.POPUP);
        band_ticket_Form.append(bandCg);

        String[] list = band.getList();

        for (int i = 0; i < list.length; i++) {
            bandCg.append(list[i], null);
        }

        String bandName = band.getName(bandCg.getSelectedIndex());
        auctionCg = new ChoiceGroup(bandName + " Auctions:", Choice.EXCLUSIVE);
        auctionCg.setLayout(Item.LAYOUT_EXPAND);
        band_ticket_Form.append(auctionCg);
        reconstructList(auctionCg, band.getTicketList(bandName));
        band_ticket_Form.setItemStateListener(new ItemStateListener() {
                public void itemStateChanged(Item item) {
                    if (item instanceof ChoiceGroup) {
                        ChoiceGroup obj = (ChoiceGroup)item;

                        if (obj == bandCg) {
                            int idx = obj.getSelectedIndex();
                            String bandName = band.getName(idx);
                            auctionCg.setLabel(bandName + " Auctions:");
                            reconstructList(auctionCg, band.getTicketList(bandName));
                        }
                    }
                }
            });

        try {
            splashScreen = Image.createImage("/example/auction/images/splashScreen.png");
            imageLoaded = true;
        } catch (java.io.IOException ex) {
        }

        splashScreenAlert = new Alert("Welcome to Ticket Auction", "", splashScreen, AlertType.INFO);
        splashScreenAlert.setTimeout(DefaultTimeout);

        ticketForm = new Form("unknown");
        ticketForm.append("unknown");
        ticketForm.addCommand(BACK_CMD);
        ticketForm.addCommand(BAND_CMD);
        ticketForm.addCommand(MAKE_BID_CMD);
        ticketForm.addCommand(SET_ALERT_CMD);
        ticketForm.setCommandListener(this);

        enterText = new TextField("Tell me when bid reaches:", "", 10, TextField.DECIMAL);

        enterForm = new Form("Set an Alert");
        enterForm.append(enterText);
        enterForm.addCommand(BACK_CMD);
        enterForm.addCommand(SAVE_CMD);
        enterForm.setCommandListener(this);

        addBand = new TextBox("Add Bands, Bands:", "", 100, TextField.ANY);
        addBand.addCommand(BACK_CMD);
        addBand.addCommand(SAVE_CMD);
        addBand.setCommandListener(this);
        firstTime = true;
    }

    public void startApp() {
        if (firstTime) {
            display.setCurrent(splashScreenAlert, band_ticket_Form);
            firstTime = false;
        }
    }

    public void destroyApp(boolean unconditional) {
    }

    public void pauseApp() {
    }

    public void commandAction(Command c, Displayable s) {
        if (s instanceof Form) {
            Form obj = (Form)s;

            if (obj == band_ticket_Form) {
                int idx = auctionCg.getSelectedIndex();
                _bandIndex = idx;

                int bandIdx = bandCg.getSelectedIndex();
                String bandName = "";

                if (bandIdx >= 0) {
                    bandName = band.getName(bandIdx);
                }

                _bandName = bandName;

                if (c == SHOW_INFO_CMD) {
                    deleteFormItem(ticketForm);
                    ticketForm.setTitle(band.getTicketDataTitle(bandName, idx));
                    band.getTicketData(ticketForm, bandName, idx);
                    display.setCurrent(ticketForm);
                } else if (c == MAKE_BID_CMD) {
                    login.setBandAttributes(bandName, _bandIndex);
                    deleteFormItem(login);
                    login.append(login.id);
                    login.id.setLabel("Enter Your ID:");
                    login.append(login.pd);
                    login.pd.setLabel("Enter PIN:");
                    login.append(login.curBid);
                    login.append(login.incBid);
                    login.append(login.minBid);
                    login.append(login.bidText);
                    login.id.setString(null);
                    login.pd.setString(null);
                    login.bidText.setString(null);
                    band.getTicketBidTitle(login, _bandName, _bandIndex);
                    display.setCurrent(login);
                } else if (c == SET_ALERT_CMD) {
                    display.setCurrent(enterForm);
                } else if (c == ADD_CMD) {
                    display.setCurrent(addBand);
                } else if (c == RMV_CMD) {
                    display.setCurrent(rmBand);
                } else if (c == SETTING_CMD) {
                    display.setCurrent(setMenu2);
                } else if (c == EXIT_CMD) {
                    notifyDestroyed();
                }
            } else if (obj == ticketForm) {
                if (c == BACK_CMD) {
                    display.setCurrent(band_ticket_Form);
                } else if (c == BAND_CMD) {
                    display.setCurrent(band_ticket_Form);
                } else if (c == MAKE_BID_CMD) {
                    login.setBandAttributes(band.getName(bandCg.getSelectedIndex()), _bandIndex);
                    deleteFormItem(login);
                    login.append(login.id);
                    login.id.setLabel("Enter Auction ID:");
                    login.append(login.pd);
                    login.pd.setLabel("Enter PIN:");
                    login.append(login.curBid);
                    login.append(login.incBid);
                    login.append(login.minBid);
                    login.append(login.bidText);
                    login.id.setString(null);
                    login.pd.setString(null);
                    login.bidText.setString(null);
                    band.getTicketBidTitle(login, _bandName, _bandIndex);
                    display.setCurrent(login);
                } else if (c == SET_ALERT_CMD) {
                    deleteFormItem(enterForm);

                    int selectedBand = bandCg.getSelectedIndex();
                    String ticketID =
                        band.getTicketID(band.getName(selectedBand), login._bandIndex);
                    enterForm.append(new StringItem("Auction:",
                            band.getName(selectedBand) + " " + ticketID));

                    String curBid =
                        band.getCurrentBid(band.getName(selectedBand), login._bandIndex);
                    enterForm.append(new StringItem("Current Bid:", "$" + curBid));
                    enterForm.append(enterText);
                    display.setCurrent(enterForm);
                }
            } else if (obj == enterForm) {
                if (c == BACK_CMD) {
                    enterText.setString(null);
                    display.setCurrent(band_ticket_Form);
                } else if (c == SAVE_CMD) {
                    updateAlert.set(band.getName(bandCg.getSelectedIndex()), enterText.getString());
                    display.setCurrent(alertMsg, band_ticket_Form);
                }
            } else if (obj == submitMsg) {
                if (c == STOP_CMD) {
                    TimerService.cancel();
                    display.setCurrent(login.confirm);
                }
            }
        } else if (s instanceof TextBox) {
            TextBox obj = (TextBox)s;

            if (obj == addBand) {
                if (c == BACK_CMD) {
                    // display.setCurrent(setMenu);
                    display.setCurrent(band_ticket_Form);
                } else if (c == SAVE_CMD) {
                    updateBandList(addBand.getString());
                    display.setCurrent(savedMsg, band_ticket_Form);
                }
            }
        }
    }

    void updateBandList(String list) {
        if (list.length() == 0) {
            return;
        }

        Vector vec = new Vector();
        int fidx = 0;

        while (true) {
            int idx = list.indexOf(',', fidx);

            if (idx == -1) {
                vec.addElement(list.substring(fidx));

                break;
            }

            vec.addElement(list.substring(fidx, idx));
            fidx = idx + 1;
        }

        for (int i = 0; i < vec.size(); i++) {
            String str = (String)vec.elementAt(i);
            int j = 0;
            int len = str.length();

            for (; j < len; j++) {
                if (str.charAt(j) != ' ') {
                    break;
                }
            }

            if (j == len) {
                continue;
            }

            if (j == 0) {
                band.add(str);
            } else {
                band.add(str.substring(j));
            }
        }

        reconstructBandTicketForm(band.getList());
        rmBand.reset();
    }

    void reconstructBandTicketForm(String[] items) {
        if ((items == null) || (items.length == 0)) {
            bandCg.deleteAll();
            auctionCg.setLabel(null);
            auctionCg.deleteAll();

            return;
        }

        reconstructList(bandCg, items);

        bandCg.setSelectedIndex(0, true);

        String bandName = band.getName(bandCg.getSelectedIndex());
        auctionCg.setLabel(bandName + " Auctions:");
        reconstructList(auctionCg, band.getTicketList(bandName));
    }

    void reconstructList(Choice list, String[] items) {
        list.deleteAll();

        for (int i = 0; i < items.length; i++) {
            list.append(items[i], null);
        }
    }

    void deleteFormItem(Form f) {
        int num = f.size();

        while (--num >= 0) {
            f.delete(num);
        }
    }

    class Login extends Form implements CommandListener {
        TextField id = new TextField("", "", 10, TextField.ANY);
        TextField pd = new TextField("", "", 10, (TextField.NUMERIC | TextField.PASSWORD));
        TextField bidText = new TextField("Enter Bid:", "", 10, TextField.DECIMAL);
        StringItem submitButton = new StringItem("", "Submit", Item.BUTTON);
        StringItem auctionHyperlink = new StringItem("Auction:", "", Item.HYPERLINK);
        StringItem curBid = new StringItem("Current Bid:", "");
        StringItem incBid = new StringItem("Increment:", "");
        StringItem minBid = new StringItem("Minimum Bid:", "");
        Form confirm = new Form("Confirm Bid");
        Form notice = new Form("Bid Received");
        Form auctionForm = new Form("unknown");
        Alert loginAlert =
            new Alert("Alert", "Your must enter your ID and password" + " before you can proceed.",
                null, null);
        String bandName;
        String bid;
        String ticketID;
        String _bandName;
        int _bandIndex;

        Login() {
            super("Make A Bid");
            id.setLabel("Enter Auction ID:");
            append(id);