java 日期选择框 应用例子

/*

* DateChooser.java

*

* Created on 2007年8月22日, 下午6:07

*

* To change this template, choose Tools | Template Manager

* and open the template in the editor.

*/

import java.awt.BasicStroke;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Component;

import java.awt.Cursor;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.GridLayout;

import java.awt.Point;

import java.awt.Polygon;

import java.awt.Stroke;

import java.awt.Toolkit;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.awt.event.MouseMotionListener;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.Comparator;

import java.util.Date;

import java.util.List;

import javax.swing.BorderFactory;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.Popup;

import javax.swing.PopupFactory;

import javax.swing.SwingUtilities;

import javax.swing.event.AncestorEvent;

import javax.swing.event.AncestorListener;

/**

*

* @author hadeslee

*/

public class DateChooser extends JPanel{

private Date initDate;

private Calendar now=Calendar.getInstance();

private Calendar select;

private JPanel monthPanel;//月历

private JP1 jp1;//四块面板,组成

private JP2 jp2;

private JP3 jp3;

private JP4 jp4;

private Font font=new Font("宋体",Font.PLAIN,12);

private final LabelManager lm=new LabelManager();

private JLabel showDate;//,toSelect;

private SimpleDateFormat sdf=new SimpleDateFormat("yyyy年MM月dd日");

private boolean isShow=false;

private Popup pop;

/**

* Creates a new instance of DateChooser

*/

public DateChooser() {

this(new Date());

}

public DateChooser(Date date){

initDate=date;

select=Calendar.getInstance();

select.setTime(initDate);

initPanel();

initLabel();

}

public void setEnabled(boolean b){

super.setEnabled(b);

showDate.setEnabled(b);

}

/**

*得到当前选择框的日期

*/

public Date getDate(){

return select.getTime();

}

//根据初始化的日期,初始化面板

private void initPanel(){

monthPanel=new JPanel(new BorderLayout());

monthPanel.setBorder(BorderFactory.createLineBorder(Color.BLUE));

JPanel up=new JPanel(new BorderLayout());

up.add(jp1=new JP1(),BorderLayout.NORTH);

up.add(jp2=new JP2(),BorderLayout.CENTER);

monthPanel.add(jp3=new JP3(),BorderLayout.CENTER);

monthPanel.add(up,BorderLayout.NORTH);

monthPanel.add(jp4=new JP4(),BorderLayout.SOUTH);

this.addAncestorListener(new AncestorListener(){

public void ancestorAdded(AncestorEvent event) {

}

public void ancestorRemoved(AncestorEvent event) {

}

//只要祖先组件一移动,马上就让popup消失

public void ancestorMoved(AncestorEvent event) {

hidePanel();

}

});

}

//初始化标签

private void initLabel(){

showDate=new JLabel(sdf.format(initDate));

showDate.setRequestFocusEnabled(true);

showDate.addMouseListener(new MouseAdapter(){

public void mousePressed(MouseEvent me){

showDate.requestFocusInWindow();

}

});

// toSelect=new JLabel(sdf.format(initDate));

// toSelect.setBorder(BorderFactory.createLineBorder(Color.BLACK));

// toSelect.setRequestFocusEnabled(true);

this.setBackground(Color.WHITE);

this.add(showDate,BorderLayout.CENTER);

// this.add(toSelect,BorderLayout.EAST);

this.setPreferredSize(new Dimension(90,25));

this.setBorder(BorderFactory.createLineBorder(Color.GRAY));

showDate.addMouseListener(new MouseAdapter(){

public void mouseEntered(MouseEvent me){

if(showDate.isEnabled()){

showDate.setCursor(new Cursor(Cursor.HAND_CURSOR));

showDate.setForeground(Color.RED);

}

}

public void mouseExited(MouseEvent me){

if(showDate.isEnabled()){

showDate.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

showDate.setForeground(Color.BLACK);

}

}

public void mousePressed(MouseEvent me){

if(showDate.isEnabled()){

showDate.setForeground(Color.CYAN);

if(isShow){

hidePanel();

}else{

showPanel(showDate);

}

}

}

public void mouseReleased(MouseEvent me){

if(showDate.isEnabled()){

showDate.setForeground(Color.BLACK);

}

}

});

showDate.addFocusListener(new FocusListener(){

public void focusLost(FocusEvent e){

hidePanel();

}

public void focusGained(FocusEvent e){

}

});

}

//根据新的日期刷新

private void refresh(){

jp1.updateDate();

jp3.updateDate();

SwingUtilities.updateComponentTreeUI(this);

}

//提交日期

private void commit(){

System.out.println("选中的日期是："+sdf.format(select.getTime()));

showDate.setText(sdf.format(select.getTime()));

hidePanel();

}

private void hidePanel(){

if(pop!=null){

isShow=false;

pop.hide();

pop=null;

}

}

private void showPanel(Component owner){

if(pop!=null){

pop.hide();

}

Point show=new Point(0,showDate.getHeight());

SwingUtilities.convertPointToScreen(show,showDate);

Dimension size=Toolkit.getDefaultToolkit().getScreenSize();

int x=show.x;

int y=show.y;

if(x<0){

x=0;

}

if(x>size.width-295){

x=size.width-295;

}

if(y<size.height-170){

}else{

y-=188;

}

pop=PopupFactory.getSharedInstance().getPopup(owner,monthPanel,x,y);

pop.show();

isShow=true;

}

private class JP1 extends JPanel{

JLabel left,right,center;

public JP1(){

super(new BorderLayout());

this.setBackground(new Color(160,185,215));

initJP1();

}

private void initJP1(){

left=new JLabel(" << ",JLabel.CENTER);

left.setToolTipText("上一月");

right=new JLabel(" >> ",JLabel.CENTER);

right.setToolTipText("下一月");

left.setBorder(BorderFactory.createEmptyBorder(10,0,0,0));

right.setBorder(BorderFactory.createEmptyBorder(10,0,0,0));

center=new JLabel("",JLabel.CENTER);

updateDate();

this.add(left,BorderLayout.WEST);

this.add(center,BorderLayout.CENTER);

this.add(right,BorderLayout.EAST);

this.setPreferredSize(new Dimension(295,25));

left.addMouseListener(new MouseAdapter(){

public void mouseEntered(MouseEvent me){

left.setCursor(new Cursor(Cursor.HAND_CURSOR));

left.setForeground(Color.RED);

}

public void mouseExited(MouseEvent me){

left.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

left.setForeground(Color.BLACK);

}

public void mousePressed(MouseEvent me){

select.add(Calendar.MONTH,-1);

left.setForeground(Color.WHITE);

refresh();

}

public void mouseReleased(MouseEvent me){

left.setForeground(Color.BLACK);

}

});

right.addMouseListener(new MouseAdapter(){

public void mouseEntered(MouseEvent me){

right.setCursor(new Cursor(Cursor.HAND_CURSOR));

right.setForeground(Color.RED);

}

public void mouseExited(MouseEvent me){

right.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

right.setForeground(Color.BLACK);

}

public void mousePressed(MouseEvent me){

select.add(Calendar.MONTH,1);

right.setForeground(Color.WHITE);

refresh();

}

public void mouseReleased(MouseEvent me){

right.setForeground(Color.BLACK);

}

});

}

private void updateDate(){

center.setText(select.get(Calendar.YEAR)+"年"+(select.get(Calendar.MONTH)+1)+"月");

}

}

private class JP2 extends JPanel{

public JP2(){

this.setPreferredSize(new Dimension(295,20));

}

protected void paintComponent(Graphics g){

g.setFont(font);

g.drawString("星期日 星期一 星期二 星期三 星期四 星期五 星期六",5,10);

g.drawLine(0,15,getWidth(),15);

}

}

private class JP3 extends JPanel{

public JP3(){

super(new GridLayout(6,7));

this.setPreferredSize(new Dimension(295,100));

initJP3();

}

private void initJP3(){

updateDate();

}

public void updateDate(){

this.removeAll();

lm.clear();

Date temp=select.getTime();

Calendar select=Calendar.getInstance();

select.setTime(temp);

select.set(Calendar.DAY_OF_MONTH,1);

int index=select.get(Calendar.DAY_OF_WEEK);

int sum=(index==1?8:index);

select.add(Calendar.DAY_OF_MONTH,0-sum);

for(int i=0;i<42;i++){

select.add(Calendar.DAY_OF_MONTH,1);

lm.addLabel(new MyLabel(select.get(Calendar.YEAR),

select.get(Calendar.MONTH),select.get(Calendar.DAY_OF_MONTH)));

}

for(MyLabel my:lm.getLabels()){

this.add(my);

}

select.setTime(temp);

}

}

private class MyLabel extends JLabel implements Comparator<MyLabel>,

MouseListener,MouseMotionListener{

private int year,month,day;

private boolean isSelected;

public MyLabel(int year,int month,int day){

super(""+day,JLabel.CENTER);

this.year=year;

this.day=day;

this.month=month;

this.addMouseListener(this);

this.addMouseMotionListener(this);

this.setFont(font);

if(month==select.get(Calendar.MONTH)){

this.setForeground(Color.BLACK);

}else{

this.setForeground(Color.LIGHT_GRAY);

}

if(day==select.get(Calendar.DAY_OF_MONTH)){

this.setBackground(new Color(160,185,215));

}else{

this.setBackground(Color.WHITE);

}

}

public boolean getIsSelected(){

return isSelected;

}

public void setSelected(boolean b,boolean isDrag){

isSelected=b;

if(b&&!isDrag){

int temp=select.get(Calendar.MONTH);

select.set(year,month,day);

if(temp==month){

SwingUtilities.updateComponentTreeUI(jp3);

}else{

refresh();

}

}

this.repaint();

}

protected void paintComponent(Graphics g){

if(day==select.get(Calendar.DAY_OF_MONTH)&&

month==select.get(Calendar.MONTH)){

//如果当前日期是选择日期,则高亮显示

g.setColor(new Color(160,185,215));

g.fillRect(0,0,getWidth(),getHeight());

}

if(year==now.get(Calendar.YEAR)&&

month==now.get(Calendar.MONTH)&&

day==now.get(Calendar.DAY_OF_MONTH)){

//如果日期和当前日期一样,则用红框

Graphics2D gd=(Graphics2D)g;

gd.setColor(Color.RED);

Polygon p=new Polygon();

p.addPoint(0,0);

p.addPoint(getWidth()-1,0);

p.addPoint(getWidth()-1,getHeight()-1);

p.addPoint(0,getHeight()-1);

gd.drawPolygon(p);

}

if(isSelected){//如果被选中了就画出一个虚线框出来

Stroke s=new BasicStroke(1.0f,BasicStroke.CAP_SQUARE,

BasicStroke.JOIN_BEVEL,1.0f,new float[]{2.0f,2.0f},1.0f);

Graphics2D gd=(Graphics2D)g;

gd.setStroke(s);

gd.setColor(Color.BLACK);

Polygon p=new Polygon();

p.addPoint(0,0);

p.addPoint(getWidth()-1,0);

p.addPoint(getWidth()-1,getHeight()-1);

p.addPoint(0,getHeight()-1);

gd.drawPolygon(p);

}

super.paintComponent(g);

}

public boolean contains(Point p){

return this.getBounds().contains(p);

}

private void update(){

repaint();

}

public void mouseClicked(MouseEvent e) {

}

public void mousePressed(MouseEvent e) {

isSelected=true;

update();

}

public void mouseReleased(MouseEvent e) {

Point p=SwingUtilities.convertPoint(this,e.getPoint(),jp3);

lm.setSelect(p,false);

commit();

}

public void mouseEntered(MouseEvent e) {

}

public void mouseExited(MouseEvent e) {

}

public void mouseDragged(MouseEvent e) {

Point p=SwingUtilities.convertPoint(this,e.getPoint(),jp3);

lm.setSelect(p,true);

}

public void mouseMoved(MouseEvent e) {

}

public int compare(MyLabel o1, MyLabel o2) {

Calendar c1=Calendar.getInstance();

c1.set(o1.year,o2.month,o1.day);

Calendar c2=Calendar.getInstance();

c2.set(o2.year,o2.month,o2.day);

return c1.compareTo(c2);

}

}

private class LabelManager{

private List<MyLabel> list;

public LabelManager(){

list=new ArrayList<MyLabel>();

}

public List<MyLabel> getLabels(){

return list;

}

public void addLabel(MyLabel my){

list.add(my);

}

public void clear(){

list.clear();

}

public void setSelect(MyLabel my,boolean b){

for(MyLabel m:list){

if(m.equals(my)){

m.setSelected(true,b);

}else{

m.setSelected(false,b);

}

}

}

public void setSelect(Point p,boolean b){

//如果是拖动,则要优化一下,以提高效率

if(b){

//表示是否能返回,不用比较完所有的标签,能返回的标志就是把上一个标签和

//将要显示的标签找到了就可以了

boolean findPrevious=false,findNext=false;

for(MyLabel m:list){

if(m.contains(p)){

findNext=true;

if(m.getIsSelected()){

findPrevious=true;

}else{

m.setSelected(true,b);

}

}else if(m.getIsSelected()){

findPrevious=true;

m.setSelected(false,b);

}

if(findPrevious&&findNext){

return;

}

}

}else{

MyLabel temp=null;

for(MyLabel m:list){

if(m.contains(p)){

temp=m;

}else if(m.getIsSelected()){

m.setSelected(false,b);

}

}

if(temp!=null){

temp.setSelected(true,b);

}

}

}

}

private class JP4 extends JPanel{

public JP4(){

super(new BorderLayout());

this.setPreferredSize(new Dimension(295,20));

this.setBackground(new Color(160,185,215));

SimpleDateFormat sdf=new SimpleDateFormat("yyyy年MM月dd日");

final JLabel jl=new JLabel("今天: "+sdf.format(new Date()));

jl.setToolTipText("点击回到今天日期");

this.add(jl,BorderLayout.CENTER);

jl.addMouseListener(new MouseAdapter(){

public void mouseEntered(MouseEvent me){

jl.setCursor(new Cursor(Cursor.HAND_CURSOR));

jl.setForeground(Color.RED);

}

public void mouseExited(MouseEvent me){

jl.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

jl.setForeground(Color.BLACK);

}

public void mousePressed(MouseEvent me){

jl.setForeground(Color.WHITE);

select.setTime(new Date());

refresh();

commit();

}

public void mouseReleased(MouseEvent me){

jl.setForeground(Color.BLACK);

}

});

}

}

public static void main(String[] args) {

final DateChooser mp=new DateChooser();

JFrame jf=new JFrame("test");

jf.add(mp,BorderLayout.CENTER);

jf.add(new JButton("测试用的"),BorderLayout.NORTH);

jf.pack();

jf.setLocationRelativeTo(null);

jf.setVisible(true);

jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

}