更改JOptionPane中的图标 [英] Changing the icon in JOptionPane
问题描述
我有一个扩展 JOptionPane
的类。在其中有一个方法调用 showConfirmDialog(new JFrame(),(JScrollPane)jp,Friends List,2,0,icon);
I have a class that extends JOptionPane
. In it there's a method that calls showConfirmDialog (new JFrame(), (JScrollPane) jp, "Friends List", 2, 0, icon);
有没有办法更改图标而无需再次调用 showConfirmDialog
?也就是说,根据我在 JOptionPane
中的输入,我可以在不进行新确认对话的情况下更改图标吗?
Is there a way to change the icon without having to call showConfirmDialog
a second time? That is, based on my input in the JOptionPane
, can I change the icon without making a new confirm dialog?
推荐答案
如图所示此处,您可以将 JOptionPane
添加到对话框
并收听所需的的PropertyChangeEvent
。以下示例在响应单击按钮时在两个 UIManager
图标之间切换。
As shown here, you can add a JOptionPane
to a Dialog
and listen for the desired PropertyChangeEvent
. The example below switches between two UIManager
icons in response to clicking the buttons.
JDialog d = new JDialog();
d.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
final Icon PENDING = UIManager.getIcon("html.pendingImage");
final Icon MISSING = UIManager.getIcon("html.missingImage");
final JOptionPane optionPane = new JOptionPane("Click a Button",
JOptionPane.QUESTION_MESSAGE, JOptionPane.YES_NO_OPTION);
optionPane.addPropertyChangeListener(new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent e) {
if (e.getPropertyName().equals(JOptionPane.VALUE_PROPERTY)) {
Integer value = (Integer) e.getNewValue();
if (value.intValue() == JOptionPane.YES_OPTION) {
optionPane.setIcon(PENDING);
} else {
optionPane.setIcon(MISSING);
}
}
}
});
d.setContentPane(optionPane);
d.pack();
d.setLocationRelativeTo(null);
d.setVisible(true);
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