我已经为大写锁定编写了代码。当它在状态栏上启用它时，当它被禁用时它在状态栏上显示为OFF。问题是当我打开多个文档然后在Doc1中启用大写锁定时，在这种情况下Doc2未启用。我想显示启用/禁用所有已打开的文档。 在这里我写了两个班。 主要课程：
public class OpenDemNew extends javax.swing.JFrame implements ChangeListener{
private ArrayList<OInternalFrame> frames = new ArrayList<OInternalFrame>();
private OInternalFrame currentFrame;
int i=0;
public OpenDemNew() {
initComponents();
}
@SuppressWarnings("unchecked")
private void initComponents() {
tp = new javax.swing.JTabbedPane();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
open = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jMenu1.setText("File");
open.setText("Open");
open.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
openActionPerformed(evt);
}
});
jMenu1.add(open);
jMenuBar1.add(jMenu1);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tp, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tp, javax.swing.GroupLayout.DEFAULT_SIZE, 279, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
private void openActionPerformed(java.awt.event.ActionEvent evt) {
FileDialog fd = new FileDialog(OpenDemNew.this, "Select File", FileDialog.LOAD);
fd.setVisible(true);
String title;
String sts;
if (fd.getFile() != null) {
sts = fd.getDirectory() + fd.getFile();
title=fd.getFile();
System.out.println(sts);
title=fd.getFile();
BufferedReader br = null;
StringBuffer str = new StringBuffer("");
try {
br = new BufferedReader(new FileReader(sts));
String line;
try {
while ((line = br.readLine()) != null) {
str.append(line + "\n");
}
} catch (IOException ex) {
Logger.getLogger(OpenDemNew.class.getName()).log(Level.SEVERE, null, ex);
}
} catch (FileNotFoundException ex) {
Logger.getLogger(OpenDemNew.class.getName()).log(Level.SEVERE, null, ex);
}
String t = str.toString();
OInternalFrame internalFrame = new OInternalFrame("",true,true);
i++;
internalFrame.setName("Doc "+i);
internalFrame.setTitle(title);
try {
internalFrame.setSelected(true);
} catch (PropertyVetoException ex) {
Logger.getLogger(OpenDemNew.class.getName()).log(Level.SEVERE, null, ex);
}
tp.add(internalFrame);
tp.setSelectedIndex(i-1);
tp.addChangeListener(this);
frames.add(internalFrame);
currentFrame=internalFrame;
currentFrame.setText(t);
currentFrame.setVisible(true);
}
}
public static void main(String args[]) {
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(OpenDemNew.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(OpenDemNew.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(OpenDemNew.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(OpenDemNew.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new OpenDemNew().setVisible(true);
}
});
}
private javax.swing.JMenu jMenu1;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem open;
private javax.swing.JTabbedPane tp;
@Override
public void stateChanged(ChangeEvent ce) {
JTabbedPane sourceTabbedPane = (JTabbedPane) ce.getSource();
int index = sourceTabbedPane.getSelectedIndex();
try
{
currentFrame =frames.get(index);
}
catch(IndexOutOfBoundsException e1){
}
} }
另一个程序是OInternalFrame.OinternalFrame具有状态栏和大写锁定逻辑。 代码是：
public class OInternalFrame extends JInternalFrame
{
private JTextArea textPane;
private JScrollPane scrollPane;
JPanel statusbarPanel;
JLabel statusLabel;
JLabel capsLabel;
private DocumentListener listen;
public OInternalFrame(String title,boolean resizable,boolean closable)
{
super(title,resizable,closable);
initComponents();
initListeners();
}
private void initComponents()
{
textPane = new JTextArea();
statusbarPanel=new JPanel();
statusLabel=new JLabel();
capsLabel=new JLabel();
scrollPane = new JScrollPane();
textPane.setFont(new java.awt.Font("Miriam Fixed", 0, 13));
add(scrollPane);
statusbarPanel.add(statusLabel);
statusbarPanel.add(capsLabel);
add(statusbarPanel,BorderLayout.SOUTH);
scrollPane.getViewport().add(textPane);
setVisible(true);
updateStatus(1,1);
if(Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK)){
capsLabel.setText("ON");
}
else {
capsLabel.setText("OFF");
}
scrollPane.setVisible(true);
}
private void initListeners()
{
textPane.addCaretListener(new CaretListener() {
@Override
public void caretUpdate(CaretEvent e) {
int linenum = 1;
int columnnum = 1;
try {
linenum=getLineAtCaret()-1;
columnnum=getColumnAtCaret();
linenum += 1;
}
catch(Exception ex) { }
updateStatus(linenum, columnnum);
}
});
textPane.addKeyListener(new KeyListener() {
@Override
public void keyTyped(KeyEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void keyReleased(KeyEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void keyPressed(KeyEvent arg0) {
if(Toolkit.getDefaultToolkit().getLockingKeyState(KeyEvent.VK_CAPS_LOCK)){
capsLabel.setText("ON");
}
else{
capsLabel.setText("OFF");
}
}
});
}
public void setText(String t)
{
textPane.setText(t);
textPane.setCaretPosition(0);
textPane.setVisible(true);
textPane.repaint();
}
public int getLineAtCaret()
{
int line = 0;
int caretPosition = textPane.getCaretPosition();
try {
line = textPane.getLineOfOffset(caretPosition);
} catch (BadLocationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return line+1;
}
public int getColumnAtCaret()
{
FontMetrics fm = textPane.getFontMetrics( textPane.getFont() );
int characterWidth = fm.stringWidth( "0" );
int column = 0;
try
{
Rectangle r = textPane.modelToView( textPane.getCaretPosition() );
int width = r.x - textPane.getInsets().left;
column = width / characterWidth;
}
catch(BadLocationException ble) {}
return column + 1;
}
private void updateStatus(int linenumber, int columnnumber)
{
statusLabel.setText("Line: " + linenumber + " Column: " + columnnumber);
}
}