Java 如何使用swing为多个文档重置菜单项的选中状态和取消选中状态
我想重置checkboxMenuItems的状态。例如,我创建了多个文档,然后在最近打开的文档中添加一些文本并选择行号,然后转到previos打开的文档。此时,行号复选框将重置为原始状态,即取消选择状态,无论我在另一个文档中是否选择它处于选中状态请帮帮我,谢谢 以下是代码:Java 如何使用swing为多个文档重置菜单项的选中状态和取消选中状态,java,swing,jcheckbox,jmenuitem,Java,Swing,Jcheckbox,Jmenuitem,我想重置checkboxMenuItems的状态。例如,我创建了多个文档,然后在最近打开的文档中添加一些文本并选择行号,然后转到previos打开的文档。此时,行号复选框将重置为原始状态,即取消选择状态,无论我在另一个文档中是否选择它处于选中状态请帮帮我,谢谢 以下是代码: import javax.swing.JInternalFrame; import javax.swing.JScrollPane; import javax.swing.JTextField; import javax.s
import javax.swing.JInternalFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTextPane;
public class ResetItems extends javax.swing.JFrame {
JTextField status;
int i=0;
JTextPane currentTextPane,lnNum;
JScrollPane scrollPane;
public ResetItems() {
initComponents();
lineNumbers.setSelected(false);
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
tabbedPane = new javax.swing.JTabbedPane();
menuBar = new javax.swing.JMenuBar();
file = new javax.swing.JMenu();
create = new javax.swing.JMenuItem();
lineNumbers = new javax.swing.JCheckBoxMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
file.setText("File");
create.setText("Create");
create.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
createActionPerformed(evt);
}
});
file.add(create);
lineNumbers.setSelected(true);
lineNumbers.setText("LineNumbers");
lineNumbers.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
lineNumbersActionPerformed(evt);
}
});
file.add(lineNumbers);
menuBar.add(file);
setJMenuBar(menuBar);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tabbedPane, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 279, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tabbedPane, javax.swing.GroupLayout.DEFAULT_SIZE, 279, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void createActionPerformed(java.awt.event.ActionEvent evt) {
final JInternalFrame internalFrame = new JInternalFrame("");
i++;
internalFrame.setName("Doc "+i);
internalFrame.setClosable(true);
internalFrame.setAutoscrolls(true);
currentTextPane=new JTextPane();
currentTextPane.setFont(new java.awt.Font("Miriam Fixed", 0, 13));
tabbedPane.add(internalFrame);
tabbedPane.add(internalFrame);
tabbedPane.setSelectedIndex(i-1);
currentTextPane.setCaretPosition(0);
scrollPane=new JScrollPane(currentTextPane);
internalFrame.add(scrollPane);
internalFrame.setSize(internalFrame.getMaximumSize());
internalFrame.pack();
internalFrame.setVisible(true);
}
private void lineNumbersActionPerformed(java.awt.event.ActionEvent evt) {
}
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
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(ResetItems.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ResetItems.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ResetItems.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ResetItems.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ResetItems().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JMenuItem create;
private javax.swing.JMenu file;
private javax.swing.JCheckBoxMenuItem lineNumbers;
private javax.swing.JMenuBar menuBar;
private javax.swing.JTabbedPane tabbedPane;
// End of variables declaration
}
您需要设置一个由文档设置关键帧的状态模型。当您更改文档时,您将把给定的状态模型恢复到应用程序中。然后,这将更改所需的各种对象的状态。有很多方法可以实现,你可以使用singleton,它向感兴趣的各方提供状态已更改的通知,他们应该更新自己。例如,好的,请提供一个例子。你首先。对目前的想法做一些研究,尝试一些不同的设计,看看你能想出什么,当你陷入困境并需要指导时发布你的努力。您的问题已经在SOI的上下文中广泛地回答了,对于Swing MVC没有概念。请提供一个例子或尝试我的应用程序一次。