该程序由一个选项卡式视图组成，在前两个和 2 s 和第三个中带有几个JTextFields 和s。这些按钮在前两个选项卡中工作正常，但在第三个选项卡上它是不可点击的。我尝试将按钮更改为类似或的其他按钮，但这些按钮也是不可编辑且不可点击的。将and函数设置为 true 似乎不起作用。我不知道是怎么回事。JButtonJTableJButtonJComboBoxJTextFieldsetEnabled()setEditable()
我所做的唯一与正常情况不同的是，当我单击表格中的单元格时，这段代码会强制重新绘制选项卡。但即使这还没有被调用，我仍然不能
ContentIWantToRepaint.this.paintImmediately(ContentIWantToRepaint.this.getVisibleRect());
关于布局的一些其他信息：选项卡的内容保存在一个JPanel带有GridBagLayout
JTextField- 表头
- 表格内容
JTextField- 表头
- 表格内容
- 按钮
有什么建议么？
checkOutPanel.java
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.table.DefaultTableModel;
public class checkOutPanel extends JPanel {
private JTable userTable;
private JTable bookTable;
private JScrollPane scrollUserTable, scrollBookTable;
private JLabel userLabel, bookLabel;
private DefaultTableModel userTableModel = new DefaultTableModel(){
public boolean isCellEditable(int row, int column){return false;}
};
private DefaultTableModel bookTableModel = new DefaultTableModel(){
public boolean isCellEditable(int row, int column){return false;}
};
private int selectedUser, selectedBook;
private JComboBox date_month, date_day, date_year;
public checkOutPanel(){
JPanel mainGrid = new JPanel();//panel that will hold all stuff in tab
JPanel buttonPanel = new JPanel();//panel for holding buttons
mainGrid.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
c.gridx=0; c.gridy=0; //first row first column
c.anchor = GridBagConstraints.WEST;//align left
c.fill = GridBagConstraints.HORIZONTAL;
//1 row, 2 columns, 15 horizontal padding, 0 vertical padding
//buttonPanel.setLayout(new GridLayout(1,2,15,0));
//labels to describe what the user has to do
userLabel = new JLabel("User :");
bookLabel = new JLabel("Book :");
JLabel dateLabel = new JLabel("Date :");
JPanel datePanel = new JPanel();
bookTable = new JTable(bookTableModel);
bookTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
userTable = new JTable(userTableModel);
userTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
Dimension d = new Dimension(500, 120);
scrollBookTable = new JScrollPane(bookTable);
scrollBookTable.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollBookTable.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scrollBookTable.setMaximumSize(d);
scrollBookTable.setMinimumSize(d);
scrollBookTable.setPreferredSize(d);
scrollUserTable = new JScrollPane(userTable);
scrollUserTable.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollUserTable.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scrollUserTable.setMaximumSize(d);
scrollUserTable.setMinimumSize(d);
scrollUserTable.setPreferredSize(d);
updateTables();
//String[] month = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
//Vector<Integer> days = new Vector<Integer>();
//for (int i=1 ; i<=31 ; i++) { days.add(i); }
//Vector<Integer> years = new Vector<Integer>();
//for (int i=2012 ; i>=1900 ; i--) { years.add(i); }
//date_month = new JComboBox(days);
JButton testButton = new JButton("WORK!!!!!!!");
//date_day = new JTextField(6);
//date_year = new JTextField(6);
//datePanel.add(dateLabel);
//datePanel.add(date_month);
//datePanel.add(date_day);
//datePanel.add(date_year);
mainGrid.add(userLabel, c); c.gridy++;
mainGrid.add(userTable.getTableHeader(), c); c.gridy++;
mainGrid.add(scrollUserTable, c); c.gridy++;
c.insets = new Insets(15, 0, 0, 0);//put some padding between users and books
mainGrid.add(bookLabel, c); c.gridy++;
c.insets= new Insets(0,0,0,0);//back to no padding
mainGrid.add(bookTable.getTableHeader(), c); c.gridy++;
mainGrid.add(scrollBookTable, c); c.gridy++;
c.insets = new Insets(15, 0, 0, 0);//put some padding between books and date
mainGrid.add(testButton, c); c.gridy++;
this.add(mainGrid);//add contents to tab
userTable.addMouseListener(new mouseListener());
bookTable.addMouseListener(new mouseListener());
}
public class mouseListener implements MouseListener{
@Override
public void mouseClicked(MouseEvent e) {}
@Override
public void mouseEntered(MouseEvent e) {}
@Override
public void mouseExited(MouseEvent e) {}
@Override
public void mousePressed(MouseEvent e) {}
@Override
public void mouseReleased(MouseEvent e) {
if(e.getSource()==userTable){
selectedUser=userTable.getSelectedRow();
userLabel.setText("User : "+ (selectedUser!=-1 ? selectedUser : ""));
//don't know why i should need to use this, but it makes it work
checkOutPanel.this.paintImmediately(checkOutPanel.this.getVisibleRect());
}else if(e.getSource()==bookTable){
selectedBook = bookTable.getSelectedRow();
System.out.println("Date Month : "+date_month.getSelectedItem().toString());
bookLabel.setText("Book : "+ (selectedBook!=-1 ? selectedBook : ""));
//don't know why i should need to use this, but it makes it work
checkOutPanel.this.paintImmediately(checkOutPanel.this.getVisibleRect());
}
}
}
private void updateTables(){
bookTableModel.setDataVector(fillBookData(SystemStart.getDbName()), fillBookColNames());
userTableModel.setDataVector(fillUserData(SystemStart.getDbName()), fillUserColNames());
}
private Vector<String> fillUserColNames(){
Vector<String> colNames = new Vector<String>();
colNames.add("ID");
colNames.add("First");
colNames.add("Last");
colNames.add("Phone");
colNames.add("Email");
colNames.add("Address");
colNames.add("City");
colNames.add("State");
colNames.add("Zip");
return colNames;
}
private Vector<String> fillBookColNames(){
Vector<String> colNames = new Vector<String>();
colNames.add("Title");
colNames.add("Format");
colNames.add("Author");
colNames.add("ISBN");
colNames.add("Year Pub.");
colNames.add("Publisher");
colNames.add("Call #");
colNames.add("Copy #");
return colNames;
}
private Vector<Vector<String>> fillUserData(String dbName){
Vector<Vector<String>> v = new Vector<Vector<String>>();
Vector<String> u;
for (int i=0; i<10; i++){
u = new Vector<String>(9);
u.add(""+i);
u.add("First");
u.add("Last");
u.add("Phone");
u.add("Email");
u.add("Address");
u.add("City");
u.add("State");
u.add("Zip");
v.add(u);
}
return v;
}
private Vector<Vector<String>> fillBookData(String dbName) {
Vector<Vector<String>> v = new Vector<Vector<String>>();
Vector<String> b;
for (int i=0; i<10; i++){//only include books that arent check out
b = new Vector<String>(8);
b.add("Title "+i);
b.add("Format");
b.add("Author");
b.add("ISBN");
b.add("Year Pub.");
b.add("Publisher");
b.add("Call #");
b.add("Copy #");
v.add(b);
}
return v;
}
}
使用此文件查看它是如何工作的：
import javax.swing.JFrame;
public class SystemStart{
private static String dbName = "dbnamehere.db";
public static void main(String[] args) {
//new TabbedFrame("Libary System");
JFrame jf = new JFrame("WORK!");
jf.add(new checkOutPanel());
jf.pack();
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static String getDbName(){return dbName;}
}