我正在创建一个应用程序，它将表格添加到表单并以特定布局排列它们。每次需要将新表添加到表单时，我都会在 MultiSplitPane 中创建一个新叶，并且我正在将新表添加到叶中。一切正常，直到我移动一个分隔线，然后尝试在里面添加一个带有表格的新叶子。
有谁知道是什么导致了这个混乱以及我该如何解决它？
这是您可以复制的有效 SSCCE：
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Event;
import java.awt.GraphicsConfiguration;
import java.awt.PopupMenu;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import org.jdesktop.swingx.MultiSplitLayout;
import org.jdesktop.swingx.MultiSplitPane;
/**
* @author Igor
*/
public class Example extends javax.swing.JFrame {
/**
* Creates new form Example
*/
@Override
public void add(Component cmpnt, Object o) {
super.add(cmpnt, o);
}
@Override
public void add(PopupMenu pm) {
super.add(pm);
}
@Override
public boolean action(Event event, Object o) {
return super.action(event, o);
}
public Example(GraphicsConfiguration gc) {
super(gc);
}
@Override
public Component add(Component cmpnt, int i) {
return super.add(cmpnt, i);
}
@Override
public Component add(Component cmpnt) {
return super.add(cmpnt);
}
// Initialize a MultiSplitPane
MultiSplitPane multiSplitPane = new MultiSplitPane();
int boxCount = 0;
String left = " (LEAF name=left0 weight=1)";
String right = "(LEAF name=right0 weight=0)";
String layoutDef = "(ROW" + left + " " + right + ")";
MultiSplitLayout.Node modelRoot = MultiSplitLayout.parseModel(layoutDef);
public Example() {
initComponents();
multiSplitPane.getMultiSplitLayout().setModel(modelRoot);
setLayout(new BorderLayout());
add(new JScrollPane(multiSplitPane), BorderLayout.CENTER);
add(new JButton("Go") {
{
addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
Example.this.addNode();
}
});
}
}, BorderLayout.SOUTH);
setDefaultCloseOperation(EXIT_ON_CLOSE);
pack();
}
//a function that adds a new Leaf to the multiSplitPane
private void addNode() {
if (boxCount == 1) {
left = " (LEAF name=left0 weight=0.5)";
right = " (LEAF name=right0 weight=0.5)";
} else if (boxCount == 2) {
left = "(COLUMN weight=0.5 left0 left" + new Integer(boxCount - 1).toString() + ")";
} else if (boxCount == 3) {
right = "(COLUMN weight=0.5 right0 right" + new Integer(boxCount - 2).toString() + ")";
} else if ((boxCount % 2 == 0) && (boxCount != 0)) {
left = left.substring(0, left.length() - 1);
left += " left" + new Integer(boxCount / 2).toString() + ")";
} else if ((boxCount % 2 != 0)) {
right = right.substring(0, right.length() - 1);
right += " right" + new Integer(boxCount / 2).toString() + ")";
}
String layoutDef = "(ROW " + left + " " + right + ")";
MultiSplitLayout.Node modelRoot = MultiSplitLayout.parseModel(layoutDef);
multiSplitPane.getMultiSplitLayout().setModel(modelRoot);
JTable t = new JTable(1, 1);
t.getColumnModel().getColumn(0).setHeaderValue("Box Title" + boxCount);
Dimension dimension = new Dimension(190, 190);
t.setPreferredScrollableViewportSize(dimension);
t.setRowHeight(800);
if (boxCount == 0) {
multiSplitPane.add(new JScrollPane(t), "left0");
} else if (boxCount == 1) {
multiSplitPane.add(new JScrollPane(t), "right0");
} else if (boxCount == 2) {
multiSplitPane.add(new JScrollPane(t), "left1");
} else if (boxCount == 3) {
multiSplitPane.add(new JScrollPane(t), "right1");
} else if (boxCount % 2 == 0) {
multiSplitPane.add(new JScrollPane(t), "left" + new Integer(boxCount / 2).toString());
} else if (boxCount % 2 != 0) {
multiSplitPane.add(new JScrollPane(t), "right" + new Integer(boxCount / 2).toString());
}
multiSplitPane.revalidate();
boxCount++;
}// End of AddNode *****************
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
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)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
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(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Example.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Example.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 Example().setVisible(true);
}
});
}
// Variables declaration - do not modify
// End of variables declaration
}
PS 运行应用程序时增加窗口大小（或最大化）。