midlet.java

英语背单词联网版本

/*
 * Midlet.java
 *
 * Created on 2003年11月25日, 上午10:29
 */

package handenglish;

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

/**
 *
 * @author  com
 * @version
 */
public class Midlet extends MIDlet implements CommandListener{
    public final int WIN_MENU = 1; //菜单
    public final int WIN_JDC = 2; //选择单员
    public final int WIN_HELP = 3;//帮助
    public final int WIN_MEG=4;//系统通告
    public final int WIN_SELUNIT = 5;//游戏测试选择单元
    public final int WIN_LIST = 6;//词库列表
    public final int WIN_DOWNWORD = 7; //下载单词
    public final int WIN_DOWNLIST = 8;//下载列表
    public final int WIN_REMEMBERWORD = 9;//记忆单词
    public final int WIN_GAME = 10;//测试训练
    public final int WIN_CONNECT = 11;
    public final int WIN_QUERY = 12;
        
    public final int npu=20;  //每UNIT单词数
    private Display display;
    private WelcomeView m_welcomeView;
    private WordUpdataView m_wordUpdataView;
    private UnitSelectView m_unitSelectView;
    private MyList m_MyList;
    private GameCanvas gameCanvas;
    public int m_unitNumber;
    public int m_wordTotal;
    private JdcApp m_jdcApp;
    private Form m_MegForm,m_SearchForm;
    public Command cmdBack,cmdRecv,cmdUpdate;
    
    private SysParam m_SysParam;
    
    public Midlet(){
        /* DbApi systemDb = new DbApi( "systemdb" );
         systemDb.deleteAll();
         systemDb.closeDatabase();
         DbApi listDb = new DbApi( "listdb" );
         listDb.deleteAll();
         listDb.closeDatabase();*/
        m_SysParam = SysParam.getInstance();
        cmdBack=new Command("返回",Command.BACK,1 );
        cmdRecv = new Command("下载词库",Command.OK,1 );
        cmdUpdate=new Command("更新词库列表",Command.SCREEN,1 );
        initWelcomeView();
        m_welcomeView.setDispType(3);
        display = Display.getDisplay(this);
    }
    public void getUnitNum(){
        DbApi wordDb=new DbApi("wordsdb");
        try {
            m_wordTotal=wordDb.getRecordNum();
            m_unitNumber=(m_wordTotal+npu-1)/npu; 
        }
        finally {
            wordDb.closeDatabase();
        }
    }
   /* public void setAllNull(){
        gameCanvas=null;
        m_jdcApp=null;
        m_wordUpdataView=null;
    } */
    
    private void freeWin( Displayable s ) {
        if ( s == m_welcomeView )
            m_welcomeView = null;
        else if ( s == m_unitSelectView )
            m_unitSelectView = null;
        else if ( s == m_wordUpdataView )
            m_wordUpdataView = null;
        else if ( s == gameCanvas )
            gameCanvas = null;
        else if ( s == m_jdcApp )
            m_jdcApp = null;
        else if ( s == m_MegForm )
            m_MegForm = null;
        else if ( s == m_MyList )
            m_MyList = null;
        else if ( s == m_SearchForm )
            m_SearchForm = null;
        System.gc();
    }
    
    public void startApp(){
        display.setCurrent(m_welcomeView);
    }
    public void exit(){
        destroyApp(true);
        notifyDestroyed();
    }
    public void getUnit(int nowUnitType,int nowUnitId ,Vector nowVector) {
        nowVector.removeAllElements();
        if (nowUnitType==1)
            m_SysParam.getUnit(nowUnitId,npu,nowVector);
        else
            m_SysParam.getDiffUnit(nowVector);
    }
    
    public void nowDisplay(Displayable s,int type){
        switch( type ) {
            case WIN_JDC:
                initUnitSelectView(0);
                display.setCurrent(m_unitSelectView);
                break;
            case WIN_MENU:
                initWelcomeView();
                m_welcomeView.setDispType(1);
                display.setCurrent(m_welcomeView);
                break;
            case WIN_HELP:
                
                initWelcomeView();
                m_welcomeView.setDispType(2);
                m_welcomeView.repaint();
                //display.setCurrent(m_welcomeView);]
                return;
            case WIN_MEG:
                /*initWelcomeView();
                m_welcomeView.setDispType(3); */
                initMegForm();
                display.setCurrent( m_MegForm);
                break;
            case WIN_SELUNIT:
                initUnitSelectView(1);
                display.setCurrent(m_unitSelectView);
                break;
            case WIN_DOWNWORD:
                boolean tB = ( ( MyList ) s ).isNullList();
                if(!tB){
                    initWordUpdataView(7);
                    m_wordUpdataView.newNumber=1;
                    m_wordUpdataView.listNull= false;
                    m_wordUpdataView.listSelectName=( ( MyList ) s ).getName();
                    m_wordUpdataView.listSelectNum=( ( MyList ) s ).getNo();
                    m_wordUpdataView.listSelectNumMax=( ( MyList ) s ).getVolume();
                    //m_wordUpdataView.getOld();
                    display.setCurrent(m_wordUpdataView);
                }
                else{
                    Alert alert = new Alert( "错误信息","词库列表为空，请先下载词库列表！" ,null,AlertType.ERROR );
                    alert.setTimeout( Alert.FOREVER );
                    display.setCurrent( alert,s );
                    return;
                }
                break;
            case WIN_DOWNLIST:
                initWordUpdataView(2);
                m_wordUpdataView.checkUp=false;
                display.setCurrent(m_wordUpdataView);
                break;
            case WIN_LIST:
                showList();
                break;
            case WIN_REMEMBERWORD:
                if ( m_jdcApp == null )
                {    m_jdcApp=new JdcApp(this,m_unitSelectView.getUnitType(),m_unitSelectView.getUnitNumber()-1);
                     display.setCurrent(m_jdcApp);
                     m_jdcApp.startThread();
                }
                else return;
                break;
            case WIN_GAME:
                if ( gameCanvas == null ) {
                    gameCanvas=new GameCanvas(this,m_unitSelectView.getUnitType(),m_unitSelectView.getUnitNumber()-1);
                    display.setCurrent(gameCanvas);
                    gameCanvas.startThread();
                }
                else return;
                break;
            case WIN_CONNECT:
                initWordUpdataView(0);
                display.setCurrent(m_wordUpdataView);
                break;
            case WIN_QUERY:
                initSearchForm();
                display.setCurrent( m_SearchForm );
                break;
        }
        freeWin( s );
    }
     /*public void doUpdata(int nowState){
        initWordUpdataView(nowState);
        display.setCurrent(m_wordUpdataView);
    }
    public void doGame(int nowUnitType,int nowUnitNumber){
        if ( gameCanvas==null )
            gameCanvas=new GameCanvas(this,nowUnitType,nowUnitNumber);
        display.setCurrent(gameCanvas);
        gameCanvas.startThread();
    }
      
   public void doRememberWords(int nowUnitType,int nowUnitNumber) {
        m_jdcApp=new JdcApp(this,nowUnitType,nowUnitNumber);
        display.setCurrent(m_jdcApp);
        m_jdcApp.StartThread();
    }
    public void responseUnitSelect(){
        doRememberWords(m_unitSelectView.getUnitType(),m_unitSelectView.getUnitNumber()-1);
        m_unitSelectView = null;
    }
    public void doGameUnitSelect(){
        doGame(m_unitSelectView.getUnitType(),m_unitSelectView.getUnitNumber()-1);
        m_unitSelectView = null;
    }
      */
    public void doWriteWord(String nowWord, String nowChinese, String nowSpell) {
        m_SysParam.writeWord(nowWord,nowChinese,nowSpell);
    }
    
    public boolean doDelWord(String nowWord) {
        return m_SysParam.deleteWord(nowWord);
    }
    public void pauseApp() {
    }
    
    public void destroyApp(boolean unconditional) {
    }
    
    public void showList( ) {
        if( m_MyList == null ) {
            
            // Command  cmdBack=new Command("返回",Command.BACK,1 );
            m_MyList = new MyList( this,"词库列表");
            m_MyList.loadData();
            m_MyList.addCommand( cmdUpdate );
            m_MyList.addCommand( cmdRecv );
            m_MyList.addCommand( cmdBack );
            
        }
        m_MyList.initSetSelectedIndex();
        m_MyList.setCommandListener( this );
        Display.getDisplay( this ).setCurrent( m_MyList );
    }
    
    public void commandAction(Command c, Displayable s) {
        if(c==cmdBack&&s== m_MegForm) {
            SysParam.getInstance().isRead=true;
            SysParam.getInstance().setParameter();
            nowDisplay(s,WIN_MENU);
        }
        else if( ( s == m_MyList || s == m_SearchForm ) && c  == cmdBack )
            nowDisplay(s,WIN_MENU);
        else if ( s == m_MyList && c == cmdRecv )
            nowDisplay(s,WIN_DOWNWORD );
        else if( s == m_MyList && c == cmdUpdate )
            nowDisplay(s,WIN_DOWNLIST );
    }
    
    public void initWelcomeView() {
        if ( m_welcomeView == null )
            m_welcomeView=new WelcomeView(this);
    }
    
    public void initUnitSelectView(int m) {
        if ( m_unitSelectView == null )
            m_unitSelectView=new UnitSelectView(this);
        m_unitSelectView.setDisplayType(m);
    }
    public void initWordUpdataView(int state){
        if ( m_wordUpdataView==null )
            m_wordUpdataView=new WordUpdataView(this);
        m_wordUpdataView.setCurState(state);
    }
    
    public void initMegForm(){
        if(m_MegForm==null){
            m_MegForm = new Form("最新通告");
            m_MegForm.append(new StringItem(null,SysParam.getInstance().msg));
            m_MegForm.addCommand(cmdBack);
            m_MegForm.setCommandListener(this);
        }
        // display.setCurrent(megForm);
    }
    
    private void initSearchForm() {
        if ( m_SearchForm == null )
            m_SearchForm = new SearchForm( this );
    }
    
    public void setUnitPos( int unitId )
    {
        SysParam.getInstance().curUnit = unitId;
        SysParam.getInstance().setParameter();
    }
}