viewnoteform.java

J2ME编的手机助手 文件下载解压缩以后,是一个NetBeans的工程文件,如果有NB的朋友,可以直接打开编辑 源文件在src目录下面,可执行文件在dist目录下 功能如下 1

/*
 * ViewNoteForm.java
 *
 * Created on 2007年3月15日, 上午10:09
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package net.bccn.account.ui;

import java.util.Date;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.DateField;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Item;
import javax.microedition.lcdui.ItemStateListener;
import javax.microedition.lcdui.TextField;
import net.bccn.account.model.Note;
import net.bccn.account.util.Record;
import net.bccn.account.util.Util;

/**
 *
 * @author hadeslee
 */
public class ViewNoteForm extends Form implements CommandListener,ItemStateListener{
    private static ViewNoteForm me;
    private Command ok,back,reset,viewAll;
    private DateField from,to;
    private TextField content;
    private ChoiceGroup dateSelect;
    /** Creates a new instance of ViewNoteForm */
    public ViewNoteForm() {
        super("查询笔记");
        initWindow();
    }
    private void initWindow(){
        viewAll=new Command("查看所有",Command.OK,3);
        ok=new Command("确定",Command.OK,1);
        back=new Command("返回",Command.BACK,0);
        reset=new Command("重置",Command.SCREEN,2);
        from=new DateField("起始日期",DateField.DATE);
        to=new DateField("结束日期",DateField.DATE);
        from.setDate(new Date());
        to.setDate(new Date());
        content=new TextField("关键字:",null,10,TextField.ANY);
        dateSelect=new ChoiceGroup("日期类型",Choice.POPUP,
                new String[]{"不限","按日期","按期间"},null);
        this.addCommand(ok);
        this.addCommand(back);
        this.addCommand(reset);
        this.addCommand(viewAll);
        this.append(content);
        this.append(dateSelect);
        this.setCommandListener(this);
        this.setItemStateListener(this);
    }
    public static ViewNoteForm getInstance(){
        if(me==null){
            me=new ViewNoteForm();
        }
        return me;
    }
    private Note getCurrentNote(){
        Note n=new Note();
        n.setContent(content.getString());
        int index=dateSelect.getSelectedIndex();
        if(index==0){
            n.setDate(null);
            n.setFromDate(null);
        }else if(index==1){
            n.setDate(to.getDate());
            n.setFromDate(null);
        }else if(index==2){
            n.setDate(to.getDate());
            n.setFromDate(from.getDate());
        }
        return n;
    }
    public void commandAction(Command command, Displayable displayable) {
        if(command==ok){
            Record[] rds=Util.getAllRecords(getCurrentNote());
            if(rds!=null){
                Note[] ns=new Note[rds.length];
                for(int i=0;i<ns.length;i++){
                    ns[i]=(Note)rds[i];
                }
                ViewNote.showViewNote(ns);
                Util.changeTo(Util.VIEW_NOTE);
            }
        }else if(command==back){
            Util.changeTo(Util.MAIN_FORM);
        }else if(command==reset){
            this.deleteAll();
            dateSelect.setSelectedIndex(0,true);
            this.append(content);
            this.append(dateSelect);
            this.content.setString(null);
        }else if(command==viewAll){
            Note note=new Note();
            Record[] rds=Util.getAllRecords(note);
            if(rds!=null){
                Note[] ns=new Note[rds.length];
                for(int i=0;i<ns.length;i++){
                    ns[i]=(Note)rds[i];
                }
                ViewNote.showViewNote(ns);
                Util.changeTo(Util.VIEW_NOTE);
            }
        }
    }
    public void itemStateChanged(Item item){
        if(item==dateSelect){
            int index=dateSelect.getSelectedIndex();
            if(index==0){
                this.deleteAll();
                this.append(content);
                this.append(dateSelect);
            }else if(index==1){
                this.deleteAll();
                this.append(content);
                this.append(dateSelect);
                to.setLabel("选择日期");
                this.append(to);
                to.setDate(new Date());
            }else if(index==2){
                this.deleteAll();
                this.append(content);
                this.append(dateSelect);
                to.setLabel("结束日期");
                this.append(from);
                this.append(to);
                from.setDate(new Date());
                to.setDate(new Date());
            }
        }
        if(dateSelect.getSelectedIndex()==2&&(item==to||item==from)){
            Date fromD=from.getDate();
            Date toD=to.getDate();
            if(fromD.getTime()/86400000>toD.getTime()/86400000){
                Util.showINFO(AlertType.ERROR,"起始日期不能大于结束日期!!");
                if(item==to){
                    to.setDate(new Date());
                }else{
                    from.setDate(new Date());
                }
            }
        }
    }
}