我想将当前的JScrollpane更改为新的。按下我的按钮后，我希望它能够改变，并且调用方法actionPerformed。 我目前遇到的问题是它只在应用程序开始时绘制Jscroll，当我想要更改它时，它起作用。（当应用程序运行时）。
我的工作是： 在应用程序的开头，我创建了一个新的JscrollPane，这个是空的。如果按下该按钮：显示另一个包含内容的JscrollPane。
if(btnPressed == true){
//set current empty jscroll pane to a filled one.
jscrollpane = View.createScrollPlane();
//View.createScrollPlane = This method fills the JscrollPane with text.
}
else { //show a empty one
jscrollpane = new JscrollPane();
}
我试过了： - 去掉 - 加 - 重新验证 - 重新粉刷
还有： JscrollPane.setViewPortView（JScrollPane的）;
我看过CardLayout，但我不愿意，因为只有空容器可以更改为CardLayout，所以它不允许我。目前它在GridBagLayout上。
提前致谢
重新编辑：Create-UI方法将当前空的Jscrollpanel更改为新的Jscrollpanel。它只初始化一次（在开头）但是更新Jscroll面板。 （当我试图把它放在假的时候）它起作用了，布尔值确实改为true但是更新了jscroll面板。
package readDataPluginPackage;
import com.change_vision.jude.api.inf.AstahAPI;
import com.change_vision.jude.api.inf.project.ProjectAccessor;
import javafx.embed.swing.JFXPanel;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.beans.PropertyChangeListener;
public class Application {
JPanel mainJPanel;
private JPanel leftJPanel;
private JPanel rightJPanel;
private JButton btnSynchronise;
private JButton btnPreview;
private JScrollPane JScrollPaneReport;
public JScrollPane JScrollPanePreview;
private boolean btnPreviewClicked = false;
public Application() {
$$$setupUI$$$();
btnPreview.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
btnPreviewClicked = true;
JOptionPane.showMessageDialog(null, "Showing..." + btnPreviewClicked);
// ShowXMLFileView showXMLFileView = new ShowXMLFileView();
// JScrollPanePreview = showXMLFileView.createLabelPane();
// if (btnPreview.isEnabled()) {
// ShowXMLFileView showXMLFileView = new ShowXMLFileView();
// JScrollPanePreview = showXMLFileView.createLabelPane();
JOptionPane.showMessageDialog(null, "XML File Preview has been updated.");
createUIComponents();
// JScrollPanePreview.revalidate();
// JScrollPanePreview.repaint();
JOptionPane.showMessageDialog(null, "Components are created again.");
}
// }
});
btnSynchronise.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null, "Synchronising...");
}
});
}
public static void main(String[] args) {
try {
//Save Astah Project as XML File
ProjectAccessor prjAccessor = AstahAPI.getAstahAPI().getProjectAccessor();
prjAccessor.open("C:\\Users\\delina\\generated\\test.asta");
prjAccessor.exportXMI("C:\\Users\\delina\\generatedXMI\\temp.xml");
prjAccessor.close();
//Show the most recent version of the xml file of the Astah Project
ReadXMLFile rd = new ReadXMLFile();
rd.showXMLFileLines();
} catch (Exception e) {
e.printStackTrace();
}
JFrame frame = new JFrame("Application");
frame.setContentPane(new Application().mainJPanel);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
private void createUIComponents() {
if (btnPreviewClicked == true) {
// ShowXMLFileView showXMLFileView = new ShowXMLFileView();
// JScrollPanePreview = showXMLFileView.createLabelPane();
// JScrollPanePreview.setViewportView(JScrollPanePreview);
leftJPanel.remove(JScrollPanePreview);
ShowXMLFileView showXMLFileView = new ShowXMLFileView();
JScrollPane JScrollPanePreview = showXMLFileView.createLabelPane();
leftJPanel.add(JScrollPanePreview);
JScrollPanePreview.revalidate();
JScrollPanePreview.repaint();
JOptionPane.showMessageDialog(null, "JScrollPanel changed");
} else {
JScrollPanePreview = new JScrollPane();
}
}
/**
* Method generated by IntelliJ IDEA GUI Designer
* >>> IMPORTANT!! <<<
* DO NOT edit this method OR call it in your code!
*
* @noinspection ALL
*/
private void $$$setupUI$$$() {
createUIComponents();
mainJPanel = new JPanel();
mainJPanel.setLayout(new GridBagLayout());
leftJPanel = new JPanel();
leftJPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc;
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
mainJPanel.add(leftJPanel, gbc);
btnSynchronise = new JButton();
btnSynchronise.setText("Synchronise");
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 2;
gbc.weightx = 1.0;
gbc.fill = GridBagConstraints.HORIZONTAL;
leftJPanel.add(btnSynchronise, gbc);
btnPreview = new JButton();
btnPreview.setText("Preview");
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 1;
gbc.weightx = 1.0;
gbc.fill = GridBagConstraints.HORIZONTAL;
leftJPanel.add(btnPreview, gbc);
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
leftJPanel.add(JScrollPanePreview, gbc);
JScrollPanePreview.setBorder(BorderFactory.createTitledBorder("XML File Preview"));
rightJPanel = new JPanel();
rightJPanel.setLayout(new GridBagLayout());
gbc = new GridBagConstraints();
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
mainJPanel.add(rightJPanel, gbc);
JScrollPaneReport = new JScrollPane();
gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.fill = GridBagConstraints.BOTH;
rightJPanel.add(JScrollPaneReport, gbc);
JScrollPaneReport.setBorder(BorderFactory.createTitledBorder("Synchronise report"));
}
/**
* @noinspection ALL
*/
public JComponent $$$getRootComponent$$$() {
return mainJPanel;
}
}
package readDataPluginPackage;
import com.change_vision.jude.api.inf.project.ProjectAccessor;
import com.change_vision.jude.api.inf.project.ProjectAccessorFactory;
import com.change_vision.jude.api.inf.project.ProjectEvent;
import com.change_vision.jude.api.inf.project.ProjectEventListener;
import com.change_vision.jude.api.inf.ui.IPluginExtraTabView;
import com.change_vision.jude.api.inf.ui.ISelectionListener;
import javax.swing.*;
import java.awt.*;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class ShowUserInterface extends JPanel implements IPluginExtraTabView, ProjectEventListener {
public ShowUserInterface() {
initComponents();
}
private void initComponents() {
setLayout(new BorderLayout());
add(createLabelPane());
addProjectEventListener();
}
private void addProjectEventListener() {
try {
ProjectAccessor projectAccessor = ProjectAccessorFactory.getProjectAccessor();
projectAccessor.addProjectEventListener(this);
} catch (ClassNotFoundException e) {
e.getMessage();
}
}
private Container createLabelPane() {
JLabel label = new JLabel("AuguSoft Synchronise");
JScrollPane pane = new JScrollPane(label);
Method privateMethod = null;
Application app = null;
Object o = null;
JComponent jComponent = null;
try {
app = new Application();
privateMethod = Application.class.getDeclaredMethod("$$$setupUI$$$");
privateMethod.setAccessible(true);
o = privateMethod.invoke(app);
jComponent = app.$$$getRootComponent$$$();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
return jComponent;
}
@Override
public void projectChanged(ProjectEvent e) {
}
@Override
public void projectClosed(ProjectEvent e) {
}
@Override
public void projectOpened(ProjectEvent e) {
}
@Override
public void addSelectionListener(ISelectionListener listener) {
}
@Override
public Component getComponent() {
return this;
}
@Override
public String getDescription() {
return "Show AuguSoft Synchronise here";
}
@Override
public String getTitle() {
return "AuguSoft View";
}
public void activated() {
}
public void deactivated() {
}
}
答案 0 :(得分：1)
所以，除了查看代码之外别无其他，我注意到在您的createUIComponents方法中，您正在隐藏JScrollPanePreview属性......
public class Application {
//...
public JScrollPane JScrollPanePreview;
//...
public Application() {..}
private void createUIComponents() {
if (btnPreviewClicked == true) {
//...
leftJPanel.remove(JScrollPanePreview);
ShowXMLFileView showXMLFileView = new ShowXMLFileView();
JScrollPane JScrollPanePreview = showXMLFileView.createLabelPane();
//...
} else {
JScrollPanePreview = new JScrollPane();
}
}
这意味着下次您更换JScrollPanePreview时，您将没有正确的引用来删除它。
在我看来（我没有完整的代码库或意图），我只需更换JScrollPanePreview视图端口（此外，我不知道如何分配{{1}无论如何，到Container：P）
JScrollPane正如观察一样;）