如何在java中的每个jList项中添加Jpanel
我想在java中的每个如何在java中的每个jList项中添加Jpanel,java,swing,jpanel,jlist,Java,Swing,Jpanel,Jlist,我想在java中的每个jlist项中动态添加jPanel。其中jPanel包含按钮、进度条和标签。而jlist在jlist中的每个元组中都包含jpanel,jlist不能保存组件,而只能保存组件的渲染。因此,简而言之,您的请求不可能直接实现但是,您可以使用类似于JTable的东西来保存JButton、JProgressBar和JLabel的可编辑渲染。JTable的最大区别在于它的单元格是可编辑的,因此按钮可以在这种环境中“工作” 通过查看指向Swing教程和其他Swing资源的链接,您可以在此
jlist
项中动态添加jPanel
。其中jPanel
包含按钮、进度条和标签。而jlist
在jlist
中的每个元组中都包含jpanel
,jlist不能保存组件,而只能保存组件的渲染。因此,简而言之,您的请求不可能直接实现但是,您可以使用类似于JTable的东西来保存JButton、JProgressBar和JLabel的可编辑渲染。JTable的最大区别在于它的单元格是可编辑的,因此按钮可以在这种环境中“工作”
通过查看指向Swing教程和其他Swing资源的链接,您可以在此处找到更多内容:
示例代码:
- 请注意,这使用了Rob Camicker令人惊讶的奇妙按钮栏。可以找到文章,也可以找到代码
- 这也借用了mKorbel的StackOverflow应答代码
- 还有垃圾神的密码
导入java.awt.BorderLayout;
导入java.awt.Color;
导入java.awt.Component;
导入java.awt.event.*;
导入java.beans.PropertyChangeEvent;
导入java.beans.PropertyChangeListener;
导入java.util.ArrayList;
导入java.util.List;
导入java.util.Random;
导入javax.swing.*;
导入javax.swing.border.border;
导入javax.swing.border.LineBorder;
导入javax.swing.event.SwingPropertyChangeSupport;
导入javax.swing.table.AbstractTableModel;
导入javax.swing.table.DefaultTableCellRenderer;
导入javax.swing.table.TableCellEditor;
导入javax.swing.table.TableCellRenderer;
导入javax.swing.table.TableColumnModel;
@抑制警告(“串行”)
公共类ComplexTableEg扩展了JPanel{
私有CTTableModel tableModel=新CTTableModel();
私有JTable table=新JTable(tableModel);
公共complextableg(){
StartProgressAction StartProgressAction=新建StartProgressAction(
“启动进度”,KeyEvent.VK_;
新按钮列(表,开始压缩,0);
table.getColumnModel().getColumn(2.setCellRenderer)(新的ProgressRenderer());
JPanel buttonPanel=新的JPanel();
add(newjbutton(newaddrowaction(“addrow”,KeyEvent.VK_A));
setLayout(新的BorderLayout());
添加(新的JScrollPane(表),BorderLayout.CENTER);
添加(按钮面板,边框布局。页面\结尾);
}
私有类AddRowAction扩展了AbstractAction{
公共AddRowAction(字符串名,int助记符){
超级(姓名);
putValue(助记符键,助记符);
}
@凌驾
已执行的公共无效操作(操作事件e){
int rowCount=tableModel.getRowCount()+1;
CTRowData ctRow=新CTRowData(“行”+行计数);
tableModel.addRow(ctRow);
}
}
私有静态void createAndShowGui(){
ComplexTableEg主面板=新的ComplexTableEg();
JFrame=新JFrame(“复杂表格Eg”);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(主面板);
frame.pack();
frame.setLocationByPlatform(真);
frame.setVisible(true);
}
公共静态void main(字符串[]args){
SwingUtilities.invokeLater(新的Runnable(){
公开募捐{
createAndShowGui();
}
});
}
}
/**
*来自mKorbel的StackOverflow答案
*@link:https://stackoverflow.com/a/7036206/522444
*
*/
类ProgressRenderer扩展了DefaultTableCellRenderer{
私有最终JProgressBar b=新JProgressBar(0,100);
公营机构({
超级();
set不透明(true);
b、 setBorder(BorderFactory.createEmptyByOrder(1,1,1,1));
}
@凌驾
公共组件GetTableCellRenderComponent(JTable表、对象值、布尔isSelected、布尔hasFocus、int行、int列){
整数i=(整数)值;
String text=“已完成”;
if(i<0){
text=“错误”;
}否则如果(i<100){
b、 设定值(i);
返回b;
}
getTableCellRenderComponent(表、文本、isSelected、hasFocus、行、列);
归还这个;
}
}
@抑制警告(“串行”)
类StartProgressAction扩展了AbstractAction{
public StartProgressAction(字符串名,int助记符){
超级(姓名);
putValue(助记符键,助记符);
}
@凌驾
已执行的公共无效操作(操作事件e){
JTable table=(JTable)e.getSource();
int rowIndex=Integer.parseInt(例如getActionCommand());
CTTableModel=(CTTableModel)table.getModel();
CTRowData行=model.getRow(行索引);
row.startProcessing();
}
}
@抑制警告(“串行”)
类CTTableModel扩展了AbstractTableModel{
公共静态最终字符串[]列标题={“按钮”,“标签”,
“进展”};
private List dataList=new ArrayList();
@凌驾
public int getRowCount(){
返回dataList.size();
}
公共CTRowData getRow(int ROWDINDEX){
返回dataList.get(rowIndex);
}
@凌驾
public int getColumnCount(){
返回列_HEADERS.length;
}
@凌驾
公共对象getValueAt(int行索引、int列索引){
CTRowData行=dataList.get(rowIndex);
开关(列索引){
案例0:
返回CTRowData.START\u处理;
案例1:
返回row.getText();
案例2:
返回row.getValue();
}
返回null;
}
@凌驾
公共类getColumnClass(int columnIndex){
开关(列索引){
案例0:
返回字符串.class;
案例1:
返回字符串.class;
案例2:
返回Integer.class;
}
//永远不应该需要这个默认值
返回super.getColumnClass(columnIndex);
}
@凌驾
公共字符串getColumnName(int列){
返回列标题[列];
}
公共vo
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;
import javax.swing.event.SwingPropertyChangeSupport;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;
@SuppressWarnings("serial")
public class ComplexTableEg extends JPanel {
private CTTableModel tableModel = new CTTableModel();
private JTable table = new JTable(tableModel);
public ComplexTableEg() {
StartProgressAction startProgressAction = new StartProgressAction(
"Start Progress", KeyEvent.VK_S);
new ButtonColumn(table, startProgressAction, 0);
table.getColumnModel().getColumn(2).setCellRenderer(new ProgressRenderer());
JPanel buttonPanel = new JPanel();
buttonPanel.add(new JButton(new AddRowAction("Add Row", KeyEvent.VK_A)));
setLayout(new BorderLayout());
add(new JScrollPane(table), BorderLayout.CENTER);
add(buttonPanel, BorderLayout.PAGE_END);
}
private class AddRowAction extends AbstractAction {
public AddRowAction(String name, int mnemonic) {
super(name);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
int rowCount = tableModel.getRowCount() + 1;
CTRowData ctRow = new CTRowData("Row " + rowCount);
tableModel.addRow(ctRow);
}
}
private static void createAndShowGui() {
ComplexTableEg mainPanel = new ComplexTableEg();
JFrame frame = new JFrame("Complex Table Eg");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
/**
* From mKorbel's StackOverflow answer
* @link: https://stackoverflow.com/a/7036206/522444
*
*/
class ProgressRenderer extends DefaultTableCellRenderer {
private final JProgressBar b = new JProgressBar(0, 100);
public ProgressRenderer() {
super();
setOpaque(true);
b.setBorder(BorderFactory.createEmptyBorder(1, 1, 1, 1));
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
Integer i = (Integer) value;
String text = "Completed";
if (i < 0) {
text = "Error";
} else if (i < 100) {
b.setValue(i);
return b;
}
super.getTableCellRendererComponent(table, text, isSelected, hasFocus, row, column);
return this;
}
}
@SuppressWarnings("serial")
class StartProgressAction extends AbstractAction {
public StartProgressAction(String name, int mnemonic) {
super(name);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
JTable table = (JTable) e.getSource();
int rowIndex = Integer.parseInt(e.getActionCommand());
CTTableModel model = (CTTableModel) table.getModel();
CTRowData row = model.getRow(rowIndex);
row.startProcessing();
}
}
@SuppressWarnings("serial")
class CTTableModel extends AbstractTableModel {
public static final String[] COLUMN_HEADERS = { "Button", "Label",
"Progress" };
private List<CTRowData> dataList = new ArrayList<>();
@Override
public int getRowCount() {
return dataList.size();
}
public CTRowData getRow(int rowIndex) {
return dataList.get(rowIndex);
}
@Override
public int getColumnCount() {
return COLUMN_HEADERS.length;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
CTRowData row = dataList.get(rowIndex);
switch (columnIndex) {
case 0:
return CTRowData.START_PROCESSING;
case 1:
return row.getText();
case 2:
return row.getValue();
}
return null;
}
@Override
public Class<?> getColumnClass(int columnIndex) {
switch (columnIndex) {
case 0:
return String.class;
case 1:
return String.class;
case 2:
return Integer.class;
}
// should never need this default
return super.getColumnClass(columnIndex);
}
@Override
public String getColumnName(int column) {
return COLUMN_HEADERS[column];
}
public void addRow(CTRowData row) {
dataList.add(row);
int firstRow = dataList.size() - 1;
fireTableRowsInserted(firstRow, firstRow);
row.addPropertyChangeListener(new RowDataListener(firstRow));
}
private class RowDataListener implements PropertyChangeListener {
private int row;
public RowDataListener(int row) {
this.row = row;
}
@Override
public void propertyChange(PropertyChangeEvent evt) {
if (CTRowData.VALUE.equals(evt.getPropertyName())) {
fireTableCellUpdated(row, 2);
}
}
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
boolean cellEditable = false;
if (columnIndex != 0) {
cellEditable = false;
} else {
cellEditable = true;
}
return cellEditable;
}
}
class CTRowData {
public static final String VALUE = "value";
public static final String PROCESSING = "processing";
public static final String START_PROCESSING = "Start Processing";
private static final int TIMER_DELAY = 500;
public static final int MAX_VALUE = 100;
private String text;
private boolean processing = false;
private int value = 0;
private Random random = new Random();
private SwingPropertyChangeSupport pcSupport = new SwingPropertyChangeSupport(
this);
public CTRowData(String text) {
this.text = text;
}
public boolean isProcessing() {
return processing;
}
public void setProcessing(boolean processing) {
boolean oldValue = this.processing;
boolean newValue = processing;
this.processing = processing;
pcSupport.firePropertyChange(PROCESSING, oldValue, newValue);
}
public void startProcessing() {
if (processing) {
return;
}
setProcessing(true);
setValue(0);
new Timer(TIMER_DELAY, new TimerListener()).start();
}
public String getText() {
return text;
}
public int getValue() {
return value;
}
public void setValue(int value) {
int oldValue = this.value;
int newValue = value;
this.value = value;
pcSupport.firePropertyChange(VALUE, oldValue, newValue);
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
pcSupport.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
pcSupport.removePropertyChangeListener(listener);
}
private class TimerListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
int temp = value;
temp += 5 + random.nextInt(10);
temp = Math.min(temp, MAX_VALUE);
setValue(temp);
if (temp >= MAX_VALUE) {
((Timer) e.getSource()).stop();
setProcessing(false);
}
}
}
}