utilisation de RowFilter

Salut,

Si tu parles de la classe javax.swing.RowFilter, elle sert à filtrer les JTable, soit à afficher uniquement les lignes qui correspondent à une formule sur les valeurs des colonnes, sans avoir à changer ce qui se trouve dans le modèle (enlever des lignes). Elle marche de concert avec la classe javax.swing.table.TableRowSorter, qui sert à définir les tris sur les colonnes : il faut absolument que la table en ait un.

Ci-après un exemple démo, avec trois filtres (un texte/regex, une combo, un slider) combinés.
Si tu tapes des lettres dans le champ texte, on ne verra que les voitures dont le nom contient ce que tu as tapé
si tu choisis une couleur dans la combo, tu ne verras que les voitures de cette couleur
le slider permet de choisir le prix minimal qu'on veut pour les voitures affichées
Code:
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import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.regex.Pattern;
 
import javax.swing.BorderFactory;
import javax.swing.DefaultListCellRenderer;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSlider;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.RowFilter;
import javax.swing.RowFilter.ComparisonType;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableRowSorter;
 
public class TableRowFilterDemo {
 
	public static void main(String[] args) {
 
		List<Car> cars = Arrays.asList(
				new Car("McLaren 720S", Paint.GRAY, 6_500_000),
				new Car("Ferrari 488 GTB", Paint.YELLOW, 5_500_000),
				new Car("Ford GT", Paint.RED, 5_500_000),
				new Car("Lamborghini Huracán", Paint.YELLOW, 5_500_000),
				new Car("Lamborghini Aventador", Paint.RED, 4_500_000),
				new Car("Noble M600", Paint.SILVER, 3_500_000),
				new Car("Gumpert Apollo", Paint.ORANGE, 3_500_000),
				new Car("Tushek Renovatio T500", Paint.WHITE, 3_500_000),
				new Car("Spyker C8 Aileron", Paint.WHITE, 2_500_000),
				new Car("Vencer Sarthe", Paint.SILVER, 2_500_000)
	    );
 
		JTable table = createTable(cars);
 
 
		JFrame frame = new JFrame("Démo filtres");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
		JPanel panel = new JPanel(new BorderLayout());
 
		panel.add(new JScrollPane(table));
 
		JTextField nameFilter = new JTextField(20);
		List<Paint> colorItems = new ArrayList<>();
		colorItems.add(null);
		colorItems.addAll(Arrays.asList(Paint.values()));
		JComboBox<Paint> colorFilter = new JComboBox<>(colorItems.toArray(new Paint[colorItems.size()]));
		colorFilter.setRenderer(new DefaultListCellRenderer() {
			@Override
			public Component getListCellRendererComponent(JList<?> list, Object value, int index, boolean isSelected,
					boolean cellHasFocus) {
				if ( value instanceof Paint ) {
					Paint paint = (Paint) value;
					DefaultListCellRenderer renderer = (DefaultListCellRenderer) super.getListCellRendererComponent(list, paint.getLabel(), index, isSelected, cellHasFocus);
					renderer.setIcon(paint.getIcon());
					return renderer;
				}
				else {
					return super.getListCellRendererComponent(list, "Toutes", index, isSelected, cellHasFocus);
				}
 
			}
		});
		JSlider priceFilter = new JSlider(1_000_000,10_000_000); 
		JPanel filterPanel = new JPanel(new GridBagLayout());
		filterPanel.add(new JLabel("Nom :"));
		filterPanel.add(nameFilter);
		filterPanel.add(new JLabel("Couleur :"));
		filterPanel.add(colorFilter);
		filterPanel.add(new JLabel("Prix :"));
		filterPanel.add(priceFilter);
		JLabel priceFilterLabel = new JLabel();
		priceFilter.addChangeListener(e->priceFilterLabel.setText(priceFilter.getValue()+ "  €"));
		priceFilter.setValue(1_000_000);
		filterPanel.add(priceFilterLabel);
		Insets insets = new Insets(5,3,10,3);
		GridBagLayout gbl = (GridBagLayout)filterPanel.getLayout();
		for(Component comp : filterPanel.getComponents() ) {
			GridBagConstraints gbc = gbl.getConstraints(comp);
			gbc.insets=insets;
			gbl.setConstraints(comp, gbc);
		}
		panel.setBorder(BorderFactory.createEmptyBorder(5, 10, 10, 10));
 
		panel.add(filterPanel, BorderLayout.NORTH);
 
		frame.add(panel);
 
		// filtrage
		nameFilter.getDocument().addDocumentListener(new DocumentListener() {
 
			@Override
			public void removeUpdate(DocumentEvent e) {
				updateFilter(table, nameFilter, colorFilter, priceFilter);
			}
 
			@Override
			public void insertUpdate(DocumentEvent e) {
				updateFilter(table, nameFilter, colorFilter, priceFilter);
			}
 
			@Override
			public void changedUpdate(DocumentEvent e) {
				updateFilter(table, nameFilter, colorFilter, priceFilter);
			}
		});
		colorFilter.addActionListener(e->updateFilter(table, nameFilter, colorFilter, priceFilter)); 
		priceFilter.addChangeListener(e->updateFilter(table, nameFilter, colorFilter, priceFilter));
 
		frame.setSize(800,300);
		frame.setLocationRelativeTo(null);
		frame.setVisible(true);
 
	}
 
	private static void updateFilter(JTable table, JTextField nameFilter, JComboBox<Paint> colorFilter, JSlider priceFilter) {
 
		List<RowFilter<CarTableModel, Integer>> filters = new ArrayList<>();
		filters.add( RowFilter.numberFilter(ComparisonType.AFTER, priceFilter.getValue(), CarTableModel.PRICE) );
 
		if ( !nameFilter.getText().trim().isEmpty() ) {
			filters.add( RowFilter.regexFilter("(?i)^.*?"+Pattern.quote(nameFilter.getText())+".*$", CarTableModel.NAME) );
		}
		if ( colorFilter.getSelectedItem()!=null ) {
			filters.add( new RowFilter<CarTableModel, Integer>() {
 
				@Override
				public boolean include(Entry<? extends CarTableModel, ? extends Integer > entry) {
					Paint paint = (Paint) entry.getModel().getValueAt(entry.getIdentifier(), CarTableModel.PAINT);
					return colorFilter.getSelectedItem()==paint;
				}
 
			});
 
		}
 
		TableRowSorter<CarTableModel> rowSorter = (TableRowSorter<CarTableModel>) table.getRowSorter();
		rowSorter.setRowFilter(RowFilter.andFilter(filters));
 
	}
 
	private static JTable createTable(List<Car> cars) {
		JTable table = new JTable();
 
		CarTableModel model = new CarTableModel(cars);
		table.setModel(model);
 
		table.setRowHeight(table.getFont().getSize()*2);
 
		table.setDefaultRenderer(Paint.class, new ColorCellRenderer()); 
 
		table.setFillsViewportHeight(true);
 
		TableRowSorter<CarTableModel> sorter = new TableRowSorter<CarTableModel>(model);
		table.setRowSorter(sorter);
 
		return table;
	}
 
	private static class CarTableModel extends AbstractTableModel {
 
		public static final int NAME = 0;
		public static final int PAINT = 1;
		public static final int PRICE = 2;
 
		private final List<Car> cars = new ArrayList<>();
 
		public CarTableModel(Collection<Car> cars) {
			if ( cars!=null ) {
				this.cars.addAll(cars);
			}
		}
 
		@Override
		public int getColumnCount() {
			return 3;
		}
 
		@Override
		public String getColumnName(int columnIndex) {
			switch(columnIndex) {
			case NAME:
				return "Nom";
			case PAINT:
				return "Couleur";
			case PRICE:
				return "Prix";
			default:
				throw new IllegalStateException();
			}
		}
 
		@Override
		public Object getValueAt(int rowIndex, int columnIndex) {
			Car car = cars.get(rowIndex);
			switch(columnIndex) {
			case NAME:
				return car.getName();
			case PAINT:
				return car.getPaint();
			case PRICE:
				return car.getPrice();
			default:
				throw new IllegalStateException();
			}
		}
 
		@Override
		public Class<?> getColumnClass(int columnIndex) {
			switch(columnIndex) {
			case NAME:
				return String.class;
			case PAINT:
				return Paint.class;
			case PRICE:
				return Long.class;
			default:
				throw new IllegalStateException();
			}
		}
 
		@Override
		public int getRowCount() {
			return cars.size();
		}
 
	}
 
	private static class Car {
 
		private final String name;
		private final Paint paint;
		private long price;
 
		public Car(String name, Paint paint, long price) {
			this.name=name;
			this.paint=paint;
			this.price=price;
		}
 
		public String getName() {
			return name;
		}
 
		public Paint getPaint() {
			return paint;
		}
 
		public long getPrice() {
			return price;
		}
 
		public void setPrice(long price) {
			this.price = price;
		}
 
	}
 
	public enum Paint {
		RED("Rouge","DC143C"),
		YELLOW("Jaune", "FFDD33"),
		GREEN("Vert", "23D16A"),
		BLUE("Bleu", "1E90FF"),
		GRAY("Acier", "B0C4DE"),
		SILVER("Argent", "DEE7E2"),
		ORANGE("Orange", "E89E32"),
		WHITE("Blanc", "FFFFFF"),
		BLACK("Noir", "161615"),
		;
 
		private final String label;
		private final Icon icon;
		private Paint(String label, String colorCode) {
			this.label=label;
			this.icon=createIcon(colorCode);
		}
		public String getLabel() {
			return label;
		}
		public Icon getIcon() {
			return icon;
		}
		private static Icon createIcon(String colorCode) {
			BufferedImage image = new BufferedImage(24, 24, BufferedImage.TYPE_INT_ARGB);
			Graphics2D g = image.createGraphics();
			g.translate(3, 3);
			g.setColor(Color.BLACK);
			g.fillRect(0, 0, 18, 18);
			g.setColor(Color.decode("#"+colorCode));
			g.fillRect(1, 1, 16, 16);
			g.dispose();
			return new ImageIcon(image);
		}
 
	}
 
	private static class ColorCellRenderer extends DefaultTableCellRenderer {
 
		@Override
		protected void setValue(Object value) {
			if ( value instanceof Paint ) {
				Paint paint = (Paint) value;
				setIcon(paint.getIcon());
				super.setValue(paint.getLabel());
			}
			else {
				setIcon(null);
				super.setValue(null);
			}
		}
 
	}
 
}