oyaha - look and feel for java

Cambiar LookAndFeel of JTable of Custom Component

Question

Estaba cambiando el LookAndFeel de una JTable poblada de Custom Class extendida de JPanel, pero no puedo hacerlo.

Edité simplemente mi código, pero todavía es largo.

public class LAF_TableCustomContainer extends JFrame {

    public LAF_TableCustomContainer()  {
      setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
      setSize(300, 300);
      setVisible(true);
      setLocationRelativeTo(null);
    }

  public static void changeLAF(Container container, String laf) {
    try {
      UIManager.setLookAndFeel(laf);
    } catch (ClassNotFoundException | InstantiationException
        | IllegalAccessException | UnsupportedLookAndFeelException e) {
    }
    SwingUtilities.updateComponentTreeUI(container);
  }

  static final JFrame frame = new JFrame();

  public JComponent makeUI() {

    String[] hdrsObjects = {"PanelSpinnerRadioButton Class Column"};
    Object[][] objectMatrix = new Object[3][1];
    objectMatrix[0][0] = new PanelSpinnerRadioButtonData(false, 10, 40);
    objectMatrix[1][0] = new PanelSpinnerRadioButtonData(true,  20, 40);
    objectMatrix[2][0] = new PanelSpinnerRadioButtonData(false, 30, 40);

    JTable table = new JTable(new DefaultTableModel(objectMatrix, hdrsObjects));
    JScrollPane scrollPane = new JScrollPane(table);
    scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
    scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
    table.setRowHeight(30);

    TableColumn tc = table.getColumn("PanelSpinnerRadioButton Class Column");
    tc.setCellRenderer(new PSRBTableCellRenderer());
    tc.setCellEditor(new PSRBTableCellEditor());

    JPanel pH = new JPanel();
    pH.setLayout(new BoxLayout(pH, BoxLayout.LINE_AXIS));

    JButton bMetal = new JButton("Metal");
    bMetal.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
          changeLAF(LAF_TableCustomContainer.this, "javax.swing.plaf.metal.MetalLookAndFeel");
          changeLAF(table, "javax.swing.plaf.metal.MetalLookAndFeel");
          changeLAF(scrollPane, "javax.swing.plaf.metal.MetalLookAndFeel");
          changeLAF((JPanel)table.getModel().getValueAt(0, 0), "javax.swing.plaf.metal.MetalLookAndFeel");
      }
    });

    JButton bMotif = new JButton("Motif");
    bMotif.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
          changeLAF(LAF_TableCustomContainer.this, "com.sun.java.swing.plaf.motif.MotifLookAndFeel");
          changeLAF(table, "com.sun.java.swing.plaf.motif.MotifLookAndFeel");
          changeLAF(scrollPane, "com.sun.java.swing.plaf.motif.MotifLookAndFeel");
          changeLAF((JPanel)table.getModel().getValueAt(0, 0), "com.sun.java.swing.plaf.motif.MotifLookAndFeel");
      }
    });

    JButton bNimbus = new JButton("Nimbus");
    bNimbus.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
          changeLAF(LAF_TableCustomContainer.this, "javax.swing.plaf.nimbus.NimbusLookAndFeel");
          changeLAF(table, "javax.swing.plaf.nimbus.NimbusLookAndFeel");
          changeLAF(scrollPane, "javax.swing.plaf.nimbus.NimbusLookAndFeel");
          changeLAF((JPanel)table.getModel().getValueAt(0, 0), "javax.swing.plaf.nimbus.NimbusLookAndFeel");
      }
    });
    pH.add(bMetal);
    pH.add(bMotif);
    pH.add(bNimbus);

    JPanel pV = new JPanel();
    pV.setLayout(new BoxLayout(pV, BoxLayout.PAGE_AXIS));
    pV.add(pH);
    pV.add(scrollPane);
    return pV;
  }
  public static void main(String... args) {
    EventQueue.invokeLater(() -> {
      LAF_TableCustomContainer f = new LAF_TableCustomContainer();
      f.getContentPane().add(f.makeUI());
    });
  }
}

class PanelSpinnerRadioButtonData {
  private boolean opt02 = false;
  private Integer from = 0;
  private Integer size = 1;

  PanelSpinnerRadioButtonData() {
    this(false, 5, 10);
  }
  PanelSpinnerRadioButtonData(boolean opt02, Integer from, Integer size) {
    this.opt02 = opt02;
    this.from = from;
    this.size = size;
  }
  public boolean getOption() {
    return opt02;
  }
  public Integer getFrom() {
    return from;
  }
  public Integer getSize() {
    return size;
  }
}

class PanelSpinnerRadioButton extends JPanel {
  public final JRadioButton jrbOption01 = new JRadioButton("01");
  public final JRadioButton jrbOption02 = new JRadioButton("12");
  public final JSpinner jspnValues = new JSpinner(new SpinnerNumberModel(5, 0, 10, 1));

  private final JPanel panel = new JPanel();

  PanelSpinnerRadioButton() {
    this(new PanelSpinnerRadioButtonData(false, 20, 40));
  }

  PanelSpinnerRadioButton(PanelSpinnerRadioButtonData data) {
    super();

    panel.setLayout(new BoxLayout(panel, BoxLayout.LINE_AXIS));
    panel.add(jrbOption01);
    panel.add(jrbOption02);
    panel.add(Box.createRigidArea(new Dimension(5, 0)));
    panel.add(new JSeparator(JSeparator.VERTICAL));
    panel.add(Box.createRigidArea(new Dimension(5, 0)));
    panel.add(jspnValues);
    ButtonGroup bg = new ButtonGroup();
    bg.add(jrbOption01);
    bg.add(jrbOption02);
    ((SpinnerNumberModel) jspnValues.getModel()).setMaximum(data.getSize());
    setData(data);

    init();
  }

  private void init() {
    setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));
    setBackground(new Color(0, 0, 0, 0));
    add(panel);
  }

  public void setData(PanelSpinnerRadioButtonData data) {
    if (data.getOption()) {
      jrbOption02.setSelected(true);
    } else {
      jrbOption01.setSelected(true);
    }
    ((SpinnerNumberModel) jspnValues.getModel()).setValue(data.getFrom());
  }

  // Used in PSRBTableCellEditor.getCellEditorValue()
  public PanelSpinnerRadioButtonData getData() {
    return new PanelSpinnerRadioButtonData(
             jrbOption02.isSelected(),
             (Integer) ((SpinnerNumberModel) jspnValues.getModel()).getValue(),
             (Integer) ((SpinnerNumberModel) jspnValues.getModel()).getMaximum());
  }
}

class PSRBTableCellRenderer implements TableCellRenderer {
  private final PanelSpinnerRadioButton renderer = new PanelSpinnerRadioButton();
  @Override public Component getTableCellRendererComponent(
      JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    if (value instanceof PanelSpinnerRadioButtonData) {
      renderer.setData((PanelSpinnerRadioButtonData) value);
    }
    return renderer;
  }
}

class PSRBTableCellEditor extends AbstractCellEditor implements TableCellEditor {
  private final PanelSpinnerRadioButton editor = new PanelSpinnerRadioButton();
  @Override public Object getCellEditorValue() {
    return editor.getData();
  }
  @Override public Component getTableCellEditorComponent(
      JTable table, Object value, boolean isSelected, int row, int column) {
    if (value instanceof PanelSpinnerRadioButtonData) {
      editor.setData((PanelSpinnerRadioButtonData) value);
    }
    return editor;
  }
}

Cuando presiono algún botón, todos los cambios de JFrame excepto las celdas de JTable, que contienen mi JPanel personalizado.

Intenté forzar solo la primera celda ...

changeLAF((JPanel)table.getModel().getValueAt(0, 0), "javax.swing.plaf.metal.MetalLookAndFeel"); 

Pero tengo la excepción:

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: PanelSpinnerRadioButtonData cannot be cast to javax.swing.JPanel

Answer 1

• La limitación del método SwingUtilities # updateComponentTreeUI (...) es que el renderizador de celda LookAndFeel no puede cambiar
  • Como PSRBTableCellRenderer no extiende JComponent , no está sujeto a la actualización LookAndFeel en el método SwingUtilities # updateComponentTreeUI (...)

// @see javax/swing/SwingUtilities.java
public static void updateComponentTreeUI(Component c) {
    updateComponentTreeUI0(c);
    c.invalidate();
    c.validate();
    c.repaint();
}
private static void updateComponentTreeUI0(Component c) {
    if (c instanceof JComponent) {
        JComponent jc = (JComponent) c;
        jc.updateUI();
        JPopupMenu jpm =jc.getComponentPopupMenu();
        if(jpm != null) {
            updateComponentTreeUI(jpm);
        }
    }
    Component[] children = null;
    if (c instanceof JMenu) {
        children = ((JMenu)c).getMenuComponents();
    }
    else if (c instanceof Container) {
        children = ((Container)c).getComponents();
    }
    if (children != null) {
        for (Component child : children) {
            updateComponentTreeUI0(child);
        }
    }
}

Puede evitar esto anulando el método JTable#updateUI() y recreando el renderizador y el editor de la celda.

JTable table = new JTable(new DefaultTableModel(objectMatrix, hdrsObjects)) {
  @Override public void updateUI() {
    super.updateUI();
    setRowHeight(30);
    TableColumn tc = getColumn("PanelSpinnerRadioButton Class Column");
    tc.setCellRenderer(new PSRBTableCellRenderer());
    tc.setCellEditor(new PSRBTableCellEditor());
  }
};

LAF_TableCustomContainer2.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;

public class LAF_TableCustomContainer2 extends JFrame {
  public LAF_TableCustomContainer2()  {
    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    setSize(300, 300);
    setVisible(true);
    setLocationRelativeTo(null);
  }

  public static void changeLAF(Container container, String laf) {
    try {
      UIManager.setLookAndFeel(laf);
    } catch (ClassNotFoundException | InstantiationException
           | IllegalAccessException | UnsupportedLookAndFeelException e) {
    }
    SwingUtilities.updateComponentTreeUI(container);
  }

  static final JFrame frame = new JFrame();

  public JComponent makeUI() {
    JPanel pV = new JPanel();
      pV.setLayout(new BoxLayout(pV, BoxLayout.PAGE_AXIS));

    String[] hdrsObjects = {"PanelSpinnerRadioButton Class Column"};
    Object[][] objectMatrix = new Object[3][1];
    objectMatrix[0][0] = new PanelSpinnerRadioButtonData(false, 10, 40);
    objectMatrix[1][0] = new PanelSpinnerRadioButtonData(true,  20, 40);
    objectMatrix[2][0] = new PanelSpinnerRadioButtonData(false, 30, 40);

      JTable table = new JTable(new DefaultTableModel(objectMatrix, hdrsObjects)) {
          @Override public void updateUI() {
              super.updateUI();
              setRowHeight(30);
              TableColumn tc = getColumn("PanelSpinnerRadioButton Class Column");
              tc.setCellRenderer(new PSRBTableCellRenderer());
              tc.setCellEditor(new PSRBTableCellEditor());
          }
      };
    JScrollPane scrollPane = new JScrollPane(table);
    scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
    scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
//     table.setRowHeight(30);
//     TableColumn tc = table.getColumn("PanelSpinnerRadioButton Class Column");
//     tc.setCellRenderer(new PSRBTableCellRenderer());
//     tc.setCellEditor(new PSRBTableCellEditor());

    JPanel pH = new JPanel();
    pH.setLayout(new BoxLayout(pH, BoxLayout.LINE_AXIS));

    JButton bMetal = new JButton("Metal");
    bMetal.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        changeLAF(pV, "javax.swing.plaf.metal.MetalLookAndFeel");
      }
    });

    JButton bMotif = new JButton("Motif");
    bMotif.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        changeLAF(pV, "com.sun.java.swing.plaf.motif.MotifLookAndFeel");
      }
    });

    JButton bNimbus = new JButton("Nimbus");
    bNimbus.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        changeLAF(pV, "javax.swing.plaf.nimbus.NimbusLookAndFeel");
      }
    });
    pH.add(bMetal);
    pH.add(bMotif);
    pH.add(bNimbus);

    pV.add(pH);
    pV.add(scrollPane);
    return pV;
  }
  public static void main(String... args) {
    EventQueue.invokeLater(() -> {
      LAF_TableCustomContainer2 f = new LAF_TableCustomContainer2();
      f.getContentPane().add(f.makeUI());
    });
  }
}

class PanelSpinnerRadioButtonData {
  private boolean opt02 = false;
  private Integer from = 0;
  private Integer size = 1;

  PanelSpinnerRadioButtonData() {
    this(false, 5, 10);
  }
  PanelSpinnerRadioButtonData(boolean opt02, Integer from, Integer size) {
    this.opt02 = opt02;
    this.from = from;
    this.size = size;
  }
  public boolean getOption() {
    return opt02;
  }
  public Integer getFrom() {
    return from;
  }
  public Integer getSize() {
    return size;
  }
}

class PanelSpinnerRadioButton extends JPanel {
  public final JRadioButton jrbOption01 = new JRadioButton("01");
  public final JRadioButton jrbOption02 = new JRadioButton("12");
  public final JSpinner jspnValues = new JSpinner(new SpinnerNumberModel(5, 0, 10, 1));

  private final JPanel panel = new JPanel();

  PanelSpinnerRadioButton() {
    this(new PanelSpinnerRadioButtonData(false, 20, 40));
  }

  PanelSpinnerRadioButton(PanelSpinnerRadioButtonData data) {
    super();

    panel.setLayout(new BoxLayout(panel, BoxLayout.LINE_AXIS));
    panel.add(jrbOption01);
    panel.add(jrbOption02);
    panel.add(Box.createRigidArea(new Dimension(5, 0)));
    panel.add(new JSeparator(JSeparator.VERTICAL));
    panel.add(Box.createRigidArea(new Dimension(5, 0)));
    panel.add(jspnValues);
    ButtonGroup bg = new ButtonGroup();
    bg.add(jrbOption01);
    bg.add(jrbOption02);
    ((SpinnerNumberModel) jspnValues.getModel()).setMaximum(data.getSize());
    setData(data);

    init();
  }

  private void init() {
    setLayout(new BoxLayout(this, BoxLayout.LINE_AXIS));
    setBackground(new Color(0, 0, 0, 0));
    add(panel);
  }

  public void setData(PanelSpinnerRadioButtonData data) {
    if (data.getOption()) {
      jrbOption02.setSelected(true);
    } else {
      jrbOption01.setSelected(true);
    }
    ((SpinnerNumberModel) jspnValues.getModel()).setValue(data.getFrom());
  }

  // Used in PSRBTableCellEditor.getCellEditorValue()
  public PanelSpinnerRadioButtonData getData() {
    return new PanelSpinnerRadioButtonData(
             jrbOption02.isSelected(),
             (Integer)((SpinnerNumberModel) jspnValues.getModel()).getValue(),
             (Integer)((SpinnerNumberModel) jspnValues.getModel()).getMaximum());
  }
}

class PSRBTableCellRenderer implements TableCellRenderer {
  private final PanelSpinnerRadioButton renderer = new PanelSpinnerRadioButton();
  @Override public Component getTableCellRendererComponent(
    JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    if (value instanceof PanelSpinnerRadioButtonData) {
      renderer.setData((PanelSpinnerRadioButtonData) value);
    }
    return renderer;
  }
}

class PSRBTableCellEditor extends AbstractCellEditor implements TableCellEditor {
  private final PanelSpinnerRadioButton editor = new PanelSpinnerRadioButton();
  @Override public Object getCellEditorValue() {
    return editor.getData();
  }
  @Override public Component getTableCellEditorComponent(
    JTable table, Object value, boolean isSelected, int row, int column) {
    if (value instanceof PanelSpinnerRadioButtonData) {
      editor.setData((PanelSpinnerRadioButtonData) value);
    }
    return editor;
  }
}