我有一个包含数据的网格和一个包含大量用户的JComboBox
,其中一个被选中。我想滚动到所选项目到用户无法看到其余数据(网格底部)的区域,以便我的JScrollPane
将自动跳转到此区域。
我该怎么做?
我认为这与scrollRectToVisible()
方法有关。
答案 0 :(得分:1)
JComboBox
不需要JScrollPane
。
import java.awt.*;
import javax.swing.*;
import javax.swing.border.EmptyBorder;
public class OneLineCombo {
private JComponent ui = null;
OneLineCombo() {
initUI();
}
public void initUI() {
if (ui!=null) return;
ui = new JPanel(new BorderLayout(4,4));
ui.setBorder(new EmptyBorder(4,20,4,20));
String[] fontFamily = GraphicsEnvironment.
getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
JComboBox fontCombo = new JComboBox(fontFamily);
fontCombo.setMaximumRowCount(1);
ui.add(fontCombo, BorderLayout.PAGE_START);
ui.add(new JLabel("Type some letters of the font name to select it"),
BorderLayout.PAGE_END);
}
public JComponent getUI() {
return ui;
}
public static void main(String[] args) {
Runnable r = new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception useDefault) {
}
OneLineCombo o = new OneLineCombo();
JFrame f = new JFrame(o.getClass().getSimpleName());
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
f.setLocationByPlatform(true);
f.setContentPane(o.getUI());
f.pack();
f.setMinimumSize(f.getSize());
f.setVisible(true);
}
};
SwingUtilities.invokeLater(r);
}
}