[JTable] Un tableau dynamique (ajout de lignes)

Version imprimable

Bonjour a Tous
voila j'ai un problème avec JTable.
Dans mon appli je doit réaliser un tableau avec des Chekbox et des JComboBox
j'ai trouver sur sun un super exemple qui fonctionne très bien

Code:

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/*
 * TableRenderDemo.java is a 1.4 application that requires no other files.
 */
 
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
 
/** 
 * TableRenderDemo is just like TableDemo, except that it
 * explicitly initializes column sizes and it uses a combo box
 * as an editor for the Sport column.
 */
public class TableRenderDemo extends JPanel {
    private boolean DEBUG = false;
 
    public TableRenderDemo() {
        super(new GridLayout(1,0));
 
        JTable table = new JTable(new MyTableModel());
        table.setPreferredScrollableViewportSize(new Dimension(500, 70));
 
        //Create the scroll pane and add the table to it.
        JScrollPane scrollPane = new JScrollPane(table);
 
        //Set up column sizes.
        initColumnSizes(table);
 
        //Fiddle with the Sport column's cell editors/renderers.
        setUpSportColumn(table, table.getColumnModel().getColumn(2));
 
        //Add the scroll pane to this panel.
        add(scrollPane);
    }
 
    /*
     * This method picks good column sizes.
     * If all column heads are wider than the column's cells'
     * contents, then you can just use column.sizeWidthToFit().
     */
    private void initColumnSizes(JTable table) {
        MyTableModel model = (MyTableModel)table.getModel();
        TableColumn column = null;
        Component comp = null;
        int headerWidth = 0;
        int cellWidth = 0;
        Object[] longValues = model.longValues;
        TableCellRenderer headerRenderer =
            table.getTableHeader().getDefaultRenderer();
 
        for (int i = 0; i < 5; i++) {
            column = table.getColumnModel().getColumn(i);
 
            comp = headerRenderer.getTableCellRendererComponent(
                                 null, column.getHeaderValue(),
                                 false, false, 0, 0);
            headerWidth = comp.getPreferredSize().width;
 
            comp = table.getDefaultRenderer(model.getColumnClass(i)).
                             getTableCellRendererComponent(
                                 table, longValues[i],
                                 false, false, 0, i);
            cellWidth = comp.getPreferredSize().width;
 
            if (DEBUG) {
                System.out.println("Initializing width of column "
                                   + i + ". "
                                   + "headerWidth = " + headerWidth
                                   + "; cellWidth = " + cellWidth);
            }
 
            //XXX: Before Swing 1.1 Beta 2, use setMinWidth instead.
            column.setPreferredWidth(Math.max(headerWidth, cellWidth));
        }
    }
 
    public void setUpSportColumn(JTable table,
                                 TableColumn sportColumn) {
        //Set up the editor for the sport cells.
        JComboBox comboBox = new JComboBox();
        comboBox.addItem("Snowboarding");
        comboBox.addItem("Rowing");
        comboBox.addItem("Knitting");
        comboBox.addItem("Speed reading");
        comboBox.addItem("Pool");
        comboBox.addItem("None of the above");
        sportColumn.setCellEditor(new DefaultCellEditor(comboBox));
 
        //Set up tool tips for the sport cells.
        DefaultTableCellRenderer renderer =
                new DefaultTableCellRenderer();
        renderer.setToolTipText("Click for combo box");
        sportColumn.setCellRenderer(renderer);
    }
 
    class MyTableModel extends AbstractTableModel {
        private String[] columnNames = {"First Name",
                                        "Last Name",
                                        "Sport",
                                        "# of Years",
                                        "Vegetarian"};
        private Object[][] data = {
            {"Mary", "Campione",
             "Snowboarding", new Integer(5), new Boolean(false)},
            {"Alison", "Huml",
             "Rowing", new Integer(3), new Boolean(true)},
            {"Kathy", "Walrath",
             "Knitting", new Integer(2), new Boolean(false)},
            {"Sharon", "Zakhour",
             "Speed reading", new Integer(20), new Boolean(true)},
            {"Philip", "Milne",
             "Pool", new Integer(10), new Boolean(false)}
        };
 
        public final Object[] longValues = {"Sharon", "Campione",
                                            "None of the above",
                                            new Integer(20), Boolean.TRUE};
 
        public int getColumnCount() {
            return columnNames.length;
        }
 
        public int getRowCount() {
            return data.length;
        }
 
        public String getColumnName(int col) {
            return columnNames[col];
        }
 
        public Object getValueAt(int row, int col) {
            return data[row][col];
        }
 
        /*
         * JTable uses this method to determine the default renderer/
         * editor for each cell.  If we didn't implement this method,
         * then the last column would contain text ("true"/"false"),
         * rather than a check box.
         */
        public Class getColumnClass(int c) {
            return getValueAt(0, c).getClass();
        }
 
        /*
         * Don't need to implement this method unless your table's
         * editable.
         */
        public boolean isCellEditable(int row, int col) {
            //Note that the data/cell address is constant,
            //no matter where the cell appears onscreen.
            if (col < 2) {
                return false;
            } else {
                return true;
            }
        }
 
        /*
         * Don't need to implement this method unless your table's
         * data can change.
         */
        public void setValueAt(Object value, int row, int col) {
            if (DEBUG) {
                System.out.println("Setting value at " + row + "," + col
                                   + " to " + value
                                   + " (an instance of "
                                   + value.getClass() + ")");
            }
 
            data[row][col] = value;
            fireTableCellUpdated(row, col);
 
            if (DEBUG) {
                System.out.println("New value of data:");
                printDebugData();
            }
        }
 
        private void printDebugData() {
            int numRows = getRowCount();
            int numCols = getColumnCount();
 
            for (int i=0; i < numRows; i++) {
                System.out.print("    row " + i + ":");
                for (int j=0; j < numCols; j++) {
                    System.out.print("  " + data[i][j]);
                }
                System.out.println();
            }
            System.out.println("--------------------------");
        }
    }
 
    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);
 
        //Create and set up the window.
        JFrame frame = new JFrame("TableRenderDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
        //Create and set up the content pane.
        TableRenderDemo newContentPane = new TableRenderDemo();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);
 
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }
 
    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

Citation:

source:http://java.sun.com/docs/books/tutor...nts/table.html

mais voila maintenant je voudrais ajouter des lignes
mais avec cet abstractModel je n'ai pas addRow
j'ai bien essayer d'écrire une fonction addRow qui modifie l'objet Data mais impossible quelqu'un peux t-il m'aider
merci

Le modèle de données que tu utilises ne permet pas (facilement) en l'état de modifier le nombre de lignes. Je te conseillerais d'utiliser un ArrayList plutôt qu'un Object[][].

Code:

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static class Person {
  String firstName;
  String lastName;
  String sport;
  Integer years;
  Boolean vegetarian;
 
  public Person(String firstName,
                String lastName,
                String sport,
                int years,
                boolean vegetarian) {
    this.firstName = firstName;
    this.lastName = lastName;
    this.sport = sport;
    this.years = new Integer(years);
    this.vegetarian = Boolean.valueOf(vegetarian);
  }
 
  public String toString() {
    return firstName + " " + lastName + " " + sport + " " + years + " " + vegetarian;
  }
};
 
class MyTableModel extends AbstractTableModel { 
        private String[] columnNames = {"First Name", 
                                        "Last Name", 
                                        "Sport", 
                                        "# of Years", 
                                        "Vegetarian"};
        private ArrayList data = setData();
 
        private ArrayList setData() {
            ArrayList data = new ArrayList();
 
            data.add(new Person("Mary", "Campione", 
                                "Snowboarding", 5, false)); 
            data.add(new Person("Alison", "Huml", 
                                "Rowing", 3, true));
            data.add(new Person("Kathy", "Walrath", 
                                "Knitting", 2, false));
            data.add(new Person("Sharon", "Zakhour", 
                                "Speed reading", 20, true));
            data.add(new Person("Philip", "Milne", 
                                "Pool", 10, false));
            return data;
        }; 
 
        public final Person longValues = new Person("Sharon", "Campione", 
                                                    "None of the above",  20, true); 
 
        public int getColumnCount() { 
            return columnNames.length; 
        } 
 
        public int getRowCount() { 
            return data.size(); 
        } 
 
        public String getColumnName(int col) { 
            return columnNames[col]; 
        } 
 
        public Object getValueAt(int row, int col) { 
            Person person = (Person) data.get(row);
            switch (col) {
            case 0: return person.firstName;
            case 1: return person.lastName;
            case 2: return person.sport;
            case 3: return person.years;
            case 4: return person.vegetarian;
            } 
        } 
 
        public void setValueAt(Object value, int row, int col) { 
            if (DEBUG) { 
                System.out.println("Setting value at " + row + "," + col 
                                   + " to " + value 
                                   + " (an instance of " 
                                   + value.getClass() + ")"); 
            } 
 
            Person person = (Person) data.get(row);
            switch (col) {
            case 0: person.firstName = (String) value;
            case 1: person.lastName = (String) value;
            case 2: person.sport = (String) value;
            case 3: person.years = (Integer) value;
            case 4: person.vegetarian = (Boolean) value;
            }
            fireTableCellUpdated(row, col); 
 
            if (DEBUG) { 
                System.out.println("New value of data:"); 
                printDebugData(); 
            } 
        } 
 
 
        public void addRow(Person person) {
          addRow(getRowCount(), person);
        }
 
        public void addRow(int pos, Person person) {
          data.add(pos, person);
          fireTableRowsInserted(pos, pos);
        }
 
        public void addRow(String firstName,
                           String lastName,
                           String sport,
                           int years,
                           boolean vegetarian) {
          addRow(getRowCount(),
                 new Person(firstName, lastName,
                            sport, years, vegetarian);
        }
 
        public void addRow(int pos,
                           String firstName,
                           String lastName,
                           String sport,
                           int years,
                           boolean vegetarian) {
          addRow(pos,
                 new Person(firstName, lastName,
                            sport, years, vegetarian));
        }
 
        private void printDebugData() { 
            int numRows = getRowCount();
 
            for (int i=0; i < numRows; i++) { 
                System.out.println("    row " + i + ":" + data.get(row));
            } 
            System.out.println("--------------------------"); 
        } 
    }

07/10/2005, 22h04
kplan

Salut,
au lieu d'hériter de AbstractTableModel, fais un extends de DefaultTableModel et tu auras accès aux méthodes addRow(Vector) et addRows(Object[]) pour l'ajout dynamique de lignes dans ton modèle.

Salut

Pour ne pas trop te compliquer la vie, voila après avoir crée ta table fait ceci
Matable.setModel(ModalTask);
Ou ModalTask est d’une variable déclaré comme suit :

Code:

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  public DefaultTableModel  ModalTask = new DefaultTableModel(
            new Object [][] { },
            new String []   { "Code", "Nom", "Prenom","Dériner délais" }
        ) {
            Class[] types = new Class [] { java.lang.String.class, java.lang.String.class, java.lang.String.class,java.lang.String.class
            };
            boolean[] canEdit = new boolean [] {
                false, false, false, false
            };
 
            public Class getColumnClass(int columnIndex) {
                return types [columnIndex];
            }
 
            public boolean isCellEditable(int rowIndex, int columnIndex) {
                return canEdit [columnIndex];
            }
        };

Après au lieu de manipuler la variable Matable tu manipules la variable ModalTask, ainsi tu auras accès à AddRow et tous ce qui va avec :wink: .