Supprimer la bordure JCombobox à l'intérieur de JTable

Question

J'ai enlevé le bouton fléché du JComoboBox pour le faire ressembler à un JTextField et l'ai ajouté comme celleditor. Le but est de créer une cellule JTable AutoSuggest (pas de saisie semi-automatique).

Sur Faire que la bordure ressemble un peu à un trait.Comment changer la bordure pour la faire ressembler à une bordure de champ de texte sur la droite. J'ai essayé d'enlever la bordure de ligne créée par frontière. Mais ce n'est pas enlever la bordure bleuâtre.

Utilisation de l'interface utilisateur Nimbus.

MCVE pour le problème

import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.swing.BorderFactory; 
import javax.swing.DefaultCellEditor; 
import javax.swing.JButton; 
import javax.swing.JComboBox; 
import javax.swing.JFrame; 
import javax.swing.JScrollPane; 
import javax.swing.JTable; 
import javax.swing.SwingUtilities; 
import javax.swing.UIManager; 

public class Sample extends JFrame { 

    public Sample() { 
     init(); 
    } 

    private void init() { 
     JTable table = new JTable(5, 5); 
     DefaultCellEditor cellEditor = new DefaultCellEditor(new EditorCombo()); 
     cellEditor.setClickCountToStart(2); 
     table.getColumnModel().getColumn(0) 
       .setCellEditor(cellEditor); 
     table.setRowHeight(30); 
     table.setCellSelectionEnabled(true); 
     add(new JScrollPane(table)); 
    } 

    public static void main(String[] args) { 
     setUpUI("Nimbus"); 
     SwingUtilities.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       Sample samp = new Sample(); 
       samp.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
       samp.setTitle("Table Test"); 
       samp.pack(); 
       samp.setLocationRelativeTo(null); 
       samp.setVisible(true); 
      } 
     }); 
    } 

    private static void setUpUI(String ui) { 
     try { 
      for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) { 
       if (ui.equals(info.getName())) { 
        UIManager.setLookAndFeel(info.getClassName()); 
        break; 
       } 
      } 
     } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) { 
      Logger.getLogger(Sample.class.getName()).log(Level.SEVERE, null, ex); 
     } 
    } 

    class EditorCombo extends JComboBox { 

     public EditorCombo() { 
      setEditable(true); 
      for (int i = 0; i < 10; i++) { 
       addItem("Sample" + i); 
      } 
      setUI(new javax.swing.plaf.synth.SynthComboBoxUI() { 
       @Override 
       protected JButton createArrowButton() { 
        JButton button = new JButton() { 
         @Override 
         public int getWidth() { 
          return 0; 
         } 
        }; 
        button.setBorder(BorderFactory.createEmptyBorder()); 
        button.setVisible(false); 
        return button; 
       } 

       @Override 
       public void configureArrowButton() { 
       } 
      }); 
     } 

    } 
} 

Answer 1

En utilisant l'interface utilisateur Nimbus

Peut-être que cela vous aidera: Nimbus Defaults (The Java™ Tutorials > Creating a GUI With JFC/Swing > Modifying the Look and Feel)

• TextField[Focused].borderPainter
• TextField[Enabled].borderPainter
• ComboBox:\"ComboBox.textField\"[Enabled].backgroundPainter
• ComboBox:\"ComboBox.textField\"[Selected].backgroundPainter

import java.awt.*; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.swing.*; 

public class Sample2 extends JFrame { 
    public Sample2() { 
    init(); 
    } 

    private void init() { 
    JTable table = new JTable(5, 5); 
    DefaultCellEditor cellEditor = new DefaultCellEditor(new EditorCombo()); 
    cellEditor.setClickCountToStart(2); 
    table.getColumnModel().getColumn(0).setCellEditor(cellEditor); 
    table.setRowHeight(30); 
    table.setCellSelectionEnabled(true); 
    add(new JScrollPane(table)); 
    } 

    public static void main(String[] args) { 
    setUpUI("Nimbus"); 
    SwingUtilities.invokeLater(new Runnable() { 

     @Override 
     public void run() { 
     Sample2 samp = new Sample2(); 
     samp.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     samp.setTitle("Table Test"); 
     samp.pack(); 
     samp.setLocationRelativeTo(null); 
     samp.setVisible(true); 
     } 
    }); 
    } 

    private static void setUpUI(String ui) { 
    try { 
     for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) { 
     if (ui.equals(info.getName())) { 
      UIManager.setLookAndFeel(info.getClassName()); 
      break; 
     } 
     } 
    } catch (ClassNotFoundException | InstantiationException 
      | IllegalAccessException | UnsupportedLookAndFeelException ex) { 
     Logger.getLogger(Sample2.class.getName()).log(Level.SEVERE, null, ex); 
    } 
    } 
} 

class EditorCombo extends JComboBox<String> { 
    public EditorCombo() { 
    super(); 
    setEditable(true); 
    for (int i = 0; i < 10; i++) { 
     addItem("Sample" + i); 
    } 
    } 
    @Override public void updateUI() { 
    //super.updateUI(); 
    setUI(new javax.swing.plaf.synth.SynthComboBoxUI() { 
     @Override 
     protected JButton createArrowButton() { 
     JButton button = new JButton() { 
      @Override 
      public int getWidth() { 
      return 0; 
      } 
     }; 
     button.setBorder(BorderFactory.createEmptyBorder()); 
     button.setVisible(false); 
     return button; 
     } 
     @Override 
     public void configureArrowButton() { 
     } 
    }); 
    UIDefaults d = new UIDefaults(); 
//  putClientProperty("Nimbus.Overrides", d); 
//  putClientProperty("Nimbus.Overrides.InheritDefaults", false); 
//  JComponent c = (JComponent) getEditor().getEditorComponent(); 
//  c.putClientProperty("Nimbus.Overrides", d); 
//  c.putClientProperty("Nimbus.Overrides.InheritDefaults", false); 
//  c.setBorder(BorderFactory.createLineBorder(Color.BLACK)); 

    Painter<JComponent> emptyPainter = new Painter<JComponent>() { 
     @Override public void paint(Graphics2D g, JComponent c, int w, int h) { 
     /* Empty painter */ 
     } 
    }; 
    d.put("TextField.borderPainter", emptyPainter); 
    d.put("TextField[Enabled].borderPainter", emptyPainter); 
    d.put("TextField[Focused].borderPainter", emptyPainter); 
    d.put("ComboBox:\"ComboBox.textField\"[Enabled].backgroundPainter", emptyPainter); 
    d.put("ComboBox:\"ComboBox.textField\"[Selected].backgroundPainter", emptyPainter); 
    d.put("ComboBox[Editable+Focused].backgroundPainter", emptyPainter); 
    putClientProperty("Nimbus.Overrides", d); 
    JComponent c = (JComponent) getEditor().getEditorComponent(); 
    c.putClientProperty("Nimbus.Overrides", d); 
    c.setBorder(BorderFactory.createLineBorder(Color.BLACK)); 
    } 
}