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メソッドでカスタムを返すJTableカスタムを設定する列が1つあります。TableCellRendererJPanelgetTableCellRendererComponent

カスタムJPanelには複数のインスタンスが含まれてJTextFieldおりJButton、カスタムのインスタンスは 1 つだけJPanel作成されます。メソッドでは、データ モデル オブジェクトからgetTableCellRendererComponentその値を設定するだけです。JTextField

JTextFiel編集可能でJButtonクリック可能にするために、モデルからのisCellEditableメソッドを true に設定し、 withをJTable実装するクラスを true に設定し、my のデフォルトのセル エディターをそれで設定する必要がありました。TableCellEditorisCellEditableJTable

カスタムのいくつかのボタンをクリックすると、選択されたテーブルの行を取得したいのですJPanelが、常に-1が返されます。ListSelectionListener を JTable に追加すると、行をクリックしても valueChanged メソッドが呼び出されません。セル エディタを削除すると、正常に動作しています。ListSelectionListenerにセル エディタを追加すると が機能しないのはなぜJTableですか? また、セル エディタを提供する必要があるのはなぜですか? モデルからの isCellEditableJTableでは十分ではありませんか?

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2 に答える 2

3

たとえばSSCCE

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

public class PanelInTable {

    private JFrame frame;
    private JTable CompTable = null;
    private PanelTableModel CompModel = null;
    private JButton addButton = null;

    public static void main(String args[]) {
        try {
            UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
            //UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception fail) {
        }
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                new PanelInTable().makeUI();
            }
        });
    }

    public void makeUI() {
        CompTable = CreateCompTable();
        JScrollPane CompTableScrollpane = new JScrollPane(CompTable, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        JPanel bottomPanel = CreateBottomPanel();
        frame = new JFrame("Comp Table Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(CompTableScrollpane, BorderLayout.CENTER);
        frame.add(bottomPanel, BorderLayout.SOUTH);
        frame.setPreferredSize(new Dimension(800, 400));
        frame.setLocation(150, 150);
        frame.pack();
        frame.setVisible(true);
    }

    public JTable CreateCompTable() {
        CompModel = new PanelTableModel();
        CompModel.addRow();
        JTable table = new JTable(CompModel);
        table.setRowHeight(new CompCellPanel().getPreferredSize().height);
        table.setTableHeader(null);
        PanelCellEditorRenderer PanelCellEditorRenderer = new PanelCellEditorRenderer();
        table.setDefaultRenderer(Object.class, PanelCellEditorRenderer);
        table.setDefaultEditor(Object.class, PanelCellEditorRenderer);
        return table;
    }

    public JPanel CreateBottomPanel() {
        addButton = new JButton("Add Comp");
        addButton.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent ae) {
                Object source = ae.getSource();
                if (source == addButton) {
                    CompModel.addRow();
                }
            }
        });
        JPanel panel = new JPanel(new GridBagLayout());
        panel.add(addButton);
        return panel;
    }
}

class PanelCellEditorRenderer extends AbstractCellEditor implements TableCellRenderer, TableCellEditor {

    private static final long serialVersionUID = 1L;
    private CompCellPanel renderer = new CompCellPanel();
    private CompCellPanel editor = new CompCellPanel();

    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        renderer.setComp((Comp) value);
        return renderer;
    }

    @Override
    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
        editor.setComp((Comp) value);
        return editor;
    }

    @Override
    public Object getCellEditorValue() {
        return editor.getComp();
    }

    @Override
    public boolean isCellEditable(EventObject anEvent) {
        return true;
    }

    @Override
    public boolean shouldSelectCell(EventObject anEvent) {
        return false;
    }
}

class PanelTableModel extends DefaultTableModel {

    private static final long serialVersionUID = 1L;

    @Override
    public int getColumnCount() {
        return 1;
    }

    public void addRow() {
        super.addRow(new Object[]{new Comp(0, 0, "", "")});
    }
}

class Comp {

    public int type;
    public int relation;
    public String lower;
    public String upper;

    public Comp(int type, int relation, String lower, String upper) {
        this.type = type;
        this.relation = relation;
        this.lower = lower;
        this.upper = upper;
    }
}

class CompCellPanel extends JPanel {

    private static final long serialVersionUID = 1L;
    private JLabel labelWith = new JLabel("With ");
    private JComboBox typeCombo = new JComboBox(new Object[]{"height", "length", "volume"});
    private JComboBox relationCombo = new JComboBox(new Object[]{"above", "below", "between"});
    private JTextField lowerField = new JTextField();
    private JLabel labelAnd = new JLabel(" and ");
    private JTextField upperField = new JTextField();
    private JButton removeButton = new JButton("remove");

    CompCellPanel() {
        setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
        relationCombo.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                enableUpper(relationCombo.getSelectedIndex() == 2);
            }
        });
        enableUpper(false);
        removeButton.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                JTable table = (JTable) SwingUtilities.getAncestorOfClass(JTable.class, (Component) e.getSource());
                int row = table.getEditingRow();
                table.getCellEditor().stopCellEditing();
                ((DefaultTableModel) table.getModel()).removeRow(row);
            }
        });
        add(labelWith);
        add(typeCombo);
        add(relationCombo);
        add(lowerField);
        add(labelAnd);
        add(upperField);
        add(Box.createHorizontalStrut(100));
        add(removeButton);
    }

    private void enableUpper(boolean enable) {
        labelAnd.setEnabled(enable);
        upperField.setEnabled(enable);
    }

    public void setComp(Comp Comp) {
        typeCombo.setSelectedIndex(Comp.type);
        relationCombo.setSelectedIndex(Comp.relation);
        lowerField.setText(Comp.lower);
        upperField.setText(Comp.upper);
        enableUpper(Comp.relation == 2);
    }

    public Comp getComp() {
        return new Comp(typeCombo.getSelectedIndex(), relationCombo.getSelectedIndex(), lowerField.getText(), upperField.getText());
    }
}
于 2013-02-26T13:18:52.310 に答える
-1

Why do you need your cell selection in your editor?

Isn't it enough that you know row and column you are currently editing?

If yes then just set them where you set your editor value.

@Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        renderer.setComp((Comp) value, row, column );
        return renderer;
    }
于 2013-02-26T13:27:15.420 に答える