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[英]Cell renderer class for a JComboBox in a JTable without parameters in the constructor
[英]Change JComboBox colours WITHOUT renderer
我可以使用以下方法更改ComboBox背景顏色:
UIManager.put("ComboBox.background", Color.RED);
而且有效。
但是要更改[selected] .background ,請查看“ Nimbus默認值”,該屬性稱為ComboBox:“ ComboBox.listRenderer” [Selected] .background ,因此我嘗試使用:
UIManager.put("ComboBox:\"ComboBox.listRenderer\"[Selected].background", Color.RED);
但這不起作用。
我想用一個渲染器來做到這一點(我已經嘗試過了,並且把很多問題都交給了我自己沒有寫過的很長的代碼,如果我這樣做的話,將組合框渲染到JFileChoosers中是一個額外的問題)。 因此,是否有解決方案可使用UIMAnager.put()修復此問題?
設置不同的Color
,而不使用Nimbus defaluts
1 /用於單獨的JComboBox
((JTextField) myJComboBox.getEditor().getEditorComponent())
#setBackground(Color.xxxx);
2 /用於JFileChooser
從此處提取的JFileChooser
(復合JComponents
)中提取所有JComponents
,方法與針對JList
和JScrooPane
所述的方法相同
通過提取safiest方式,所有JComponents
從JFileChooser
的建議在以前的帖子關於這里
3 /通過使用NimbusDefalut
查找默認值
JTextField
並按照我的建議1
JComboBox's DropDown List
從JComboBox's DropDown List
的JList
JComboBox's DropDown List
,從JTable
選擇的HighLighter的JComboBox's DropDown List
編輯:
碼
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.plaf.basic.BasicComboPopup;
public class DisabledEditableCombo extends JFrame {
private static final long serialVersionUID = 1L;
private String comboList[] = (new String[]{"-", "London", "New York", "Sydney", "Tokyo"});
private JComboBox cmb = new JComboBox(comboList);
private JComboBox cmb1 = new JComboBox(comboList);
private JComboBox cmb2 = new JComboBox(comboList);
private JComboBox cmb3 = new JComboBox(comboList);
private JList list;
private JCheckBox checkBox = new JCheckBox("Combo enabled", false);
public DisabledEditableCombo() {
JLabel lbl = new JLabel("Editable JComboBox");
cmb.setEditable(true);
((JTextField) cmb.getEditor().getEditorComponent()).setDisabledTextColor(Color.red);
((JTextField) cmb.getEditor().getEditorComponent()).setBackground(Color.green);
cmb.setSelectedItem("Just Editable");
JLabel lbl1 = new JLabel("Non-Editable JComboBoxes");
//UIManager.put("ComboBox.disabledForeground", Color.red.darker().darker());
cmb1.setSelectedItem("Sydney");
cmb1.setRenderer(new DefaultListCellRenderer() {// ListCellRenderer
private static final long serialVersionUID = 1L;
@Override
public void paint(Graphics g) {
setBackground(cmb1.getBackground());
setForeground(Color.red);
super.paint(g);
}
});
cmb2.getEditor().getEditorComponent().setForeground(Color.blue);
((JTextField) cmb2.getEditor().getEditorComponent()).setDisabledTextColor(Color.red);
cmb2.setSelectedItem("London");
cmb3.setSelectedItem("Sydney");
checkBox.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
boolean selected = checkBox.isSelected();
cmb.setEnabled(selected);
cmb1.setEnabled(selected);
cmb2.setEnabled(selected);
cmb2.setEditable(!cmb2.isEnabled());
cmb2.setForeground(selected ? Color.blue : Color.red);
if (cmb2.getEditor() != null) {
((JTextField) cmb2.getEditor().getEditorComponent()).setDisabledTextColor(Color.red);
}
cmb3.setEnabled(selected);
Object child = cmb3.getAccessibleContext().getAccessibleChild(0);
BasicComboPopup popup = (BasicComboPopup) child;
list = popup.getList();
if (list != null) {
if (selected) {
list.setForeground(Color.blue);
} else {
list.setForeground(Color.red);
}
}
}
});
cmb.setEnabled(false);
cmb1.setEnabled(false);
cmb2.setEnabled(false);
cmb3.setEnabled(false);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setPreferredSize(new Dimension(300, 300));
setLocation(150, 100);
setLayout(new GridLayout(7, 0, 10, 10));
add(lbl);
add(cmb);
add(lbl1);
add(cmb1);
add(cmb2);
add(checkBox);
add(cmb3);
pack();
setVisible(true);
}
public static void main(String args[]) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
DisabledEditableCombo disabledEditableCombo = new DisabledEditableCombo();
}
});
}
}
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