uiutilities.java

来自「SUN公司发布的SmartTicket 2.0蓝图」· Java 代码 · 共 152 行

package com.sun.j2me.blueprints.smartticket.client.midp.ui;

import javax.microedition.lcdui.*;
import java.util.*;

public class UIUtilities {
    // Contants value used among the app
    public static final int ZIP_LENGTH = 5;
    public static final int LOGIN_LENGTH = 4;
    public static final int PASSWORD_LENGTH = 6;
    public static final int SEATING_PLAN_MIN_HEIGHT = 100;
    public static final int SEATING_PLAN_MIN_WIDTH = 100;
    public static final int SEATING_PLAN_PREF_HEIGHT = 140;
    public static final int SEATING_PLAN_PREF_WIDTH = 130;
    public static final int GUARANTEED_MINUTES = 5;
    public static final int CREDIT_CARD_START_YEAR = 2003;
    public static final int TICKET_PRICE = 8;

    public static class YearChoiceGroup extends ChoiceGroup {
        private static final int NUM_YEARS = 10;
        private static final int[] YEARS = new int[NUM_YEARS];
        static {
            int currentYear = Calendar.getInstance().get(Calendar.YEAR);

            for (int i = 0; i != YEARS.length; i++) {
                YEARS[i] = currentYear + i;
            } 
        } 

        public YearChoiceGroup(UIController uiController) {
            super(uiController.getString(UIMessageCodes.YEAR), Choice.POPUP);

            append(uiController.getString(UIMessageCodes.CHOOSE_A_YEAR), 
                   null);

            for (int i = 0; i != YEARS.length; i++) {
                append(String.valueOf(YEARS[i]), null);
            } 
        }

        public int getSelectedYear() {
            int selectedIndex = getSelectedIndex();

            if (selectedIndex > 0) {
                return YEARS[getSelectedIndex() - 1];
            } else {
                throw new IllegalStateException();
            } 
        } 

        public void setSelectedYear(int year) {
            for (int i = 0; i != YEARS.length; i++) {
                if (YEARS[i] == year) {
                    setSelectedIndex(i + 1, true);

                    break;
                } 
            } 
        } 

    }

    public static class MonthChoiceGroup extends ChoiceGroup {
        private static final int[] MONTHS = new int[] {
            Calendar.JANUARY, Calendar.FEBRUARY, Calendar.MARCH, 
            Calendar.APRIL, Calendar.MAY, Calendar.JUNE, Calendar.JULY, 
            Calendar.AUGUST, Calendar.SEPTEMBER, Calendar.OCTOBER, 
            Calendar.NOVEMBER, Calendar.DECEMBER
        };

        public MonthChoiceGroup(UIController uiController) {
            super(uiController.getString(UIMessageCodes.MONTH), Choice.POPUP, 
                  new String[] {
                uiController.getString(UIMessageCodes.CHOOSE_A_MONTH), 
                uiController.getString(UIMessageCodes.JAN), 
                uiController.getString(UIMessageCodes.FEB), 
                uiController.getString(UIMessageCodes.MAR), 
                uiController.getString(UIMessageCodes.APR), 
                uiController.getString(UIMessageCodes.MAY), 
                uiController.getString(UIMessageCodes.JUN), 
                uiController.getString(UIMessageCodes.JUL), 
                uiController.getString(UIMessageCodes.AUG), 
                uiController.getString(UIMessageCodes.SEP), 
                uiController.getString(UIMessageCodes.OCT), 
                uiController.getString(UIMessageCodes.NOV), 
                uiController.getString(UIMessageCodes.DEC)
            }, null);
        }

        public int getSelectedMonth() {
            int selectedIndex = getSelectedIndex();

            if (selectedIndex > 0) {
                return MONTHS[getSelectedIndex() - 1];
            } else {
                throw new IllegalStateException();
            } 
        } 

        public void setSelectedMonth(int month) {
            for (int i = 0; i != MONTHS.length; i++) {
                if (MONTHS[i] == month) {
                    setSelectedIndex(i + 1, true);

                    break;
                } 
            } 
        } 

    }

    public static class DayChoiceGroup extends ChoiceGroup {
        private static final int[] DAYS = new int[] {
            Calendar.FRIDAY, Calendar.SATURDAY, Calendar.SUNDAY, 
            Calendar.MONDAY, Calendar.TUESDAY, Calendar.WEDNESDAY, 
            Calendar.THURSDAY
        };

        public DayChoiceGroup() {
            super("Day:", Choice.POPUP, new String[] {
                "Choose a Day", "Friday", "Saturday", "Sunday", "Monday", 
                "Tuesday", "Wednesday", "Thursday"
            }, null);
        }

        public int getSelectedDay() {
            int selectedIndex = getSelectedIndex();

            if (selectedIndex > 0) {
                return DAYS[getSelectedIndex() - 1];
            } else {
                throw new IllegalStateException();
            } 
        } 

        public void setSelectedDay(int day) {
            for (int i = 0; i != DAYS.length; i++) {
                if (DAYS[i] == day) {
                    setSelectedIndex(i + 1, true);

                    break;
                } 
            } 
        } 

    }

}