package org.zblog.zenghelper.screen;

import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.StringItem;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import org.zblog.zenghelper.util.Navigator;
import org.zblog.zenghelper.dbtool.DbTool;
import javax.microedition.rms.RecordStore;
import javax.microedition.rms.RecordEnumeration;

/**
 * <br><strong>Z英語學習助手－查看系統狀態屏幕</strong><br>
 * <br>該屏幕主要用于顯示系統的存儲狀況，主要包括以下內容：
 * <br>1.單詞數量，占用內存大小
 * <br>2.解釋數量，占用內存大小
 * <br>3.生詞數量，占用內存大小
 * <br>4.其它內存大小（WordGroup）
 * <br>5.總共占用內存大小
 *
 * @author <a href="mailto:zcw@zblog.org">朱傳偉</a><br><a href="http://www.zblog.org">www.zblog.org</a></p>
 * @version <strong>ZEnHelper</strong> Ver 1.0
 */
public class SystemScreen extends Form implements CommandListener{
    public DbTool dt=DbTool.getInstance();
    public StringItem enwords=null;
    public StringItem cnwords=null;
    public StringItem flags=null;
    public StringItem bases=null;
    public StringItem count=null;

    public SystemScreen() {
        super("系統狀態");
        enwords=new StringItem("單詞：",null);
        cnwords=new StringItem("解釋：",null);
        flags=new StringItem("生詞：",null);
        bases=new StringItem("其它：",null);
        count=new StringItem("總計：",null);
        getData();
        append(enwords);
        append(cnwords);
        append(flags);
        append(bases);
        append(count);
        Command back=new Command("返回",Command.BACK,1);
        addCommand(back);
        setCommandListener(this);
    }

    public void commandAction(Command command, Displayable displayable) {
        if(command.getLabel().equals("返回")){
            Navigator.current=Navigator.Main_Screen;
            Navigator.show();
        }
    }

    public void getData(){
        try{
            int mcount=0;
            //英文單詞的屬性
            RecordStore rs = dt.openRS(DbTool.EN_WORD_DB);
            mcount=mcount+rs.getSize();
            RecordEnumeration re = rs.enumerateRecords(null, null, false);
            enwords.setText(re.numRecords()+"條 "+rs.getSize()+"B");
            rs.closeRecordStore();
            //中文詞語的屬性
            rs=dt.openRS(DbTool.CN_WORD_DB);
            mcount=mcount+rs.getSize();
            re = rs.enumerateRecords(null, null, false);
            cnwords.setText(re.numRecords()+"條 "+rs.getSize()+"B");
            rs.closeRecordStore();
            //生詞標記的屬性
            rs=dt.openRS(DbTool.STRANGE_WORD);
            mcount=mcount+rs.getSize();
            re = rs.enumerateRecords(null, null, false);
            flags.setText(re.numRecords()+"條 "+rs.getSize()+"B");
            rs.closeRecordStore();
            //基礎支持的屬性
            rs=dt.openRS(DbTool.CN_WORD_GROUP_DB);
            int cc=rs.getSize();
            rs.closeRecordStore();
            rs=dt.openRS(DbTool.EN_WORD_GROUP_DB);
            cc=cc+rs.getSize();
            rs.closeRecordStore();
            mcount=mcount+cc;
            bases.setText(cc+"B");
            //內存占用總計
            count.setText(mcount+"B");
        }
        catch(Exception e){e.printStackTrace();}
    }

}