AbstractTableModel和单元格编辑器

Question

The example i have found: http://www.java2s.com/Code/Java/Swing-Components/ButtonTableExample.htm show how to create a JTable with specified column (button). It works properly, but the my problem is, that i need to use AbstractTableModel instead of DefaultTableModel (as at the example shows).

So i created my own TableModel, which extends AbstractTableModel:

public class TableModel extends AbstractTableModel { //..
}

and replaced:

 DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][] { { "button 1", "foo" },
    { "button 2", "bar" } }, new Object[] { "Button", "String" });

JTable table = new JTable(dm);

for:

JTable table = new JTable(new TableModel());

And then nothing happens, when i will click button at some row. Any suggestions?

Answer 1

Make sure you override AbstractTableModel.isCellEditable method to return true for the column with the button otherwise the editor will not be triggered. This method by default returns false .

Also, make sure you override getColumnName() to return proper name since the sample that you linked tries to find a column with name "Button" to setup the editor.

You may find a Table Button Column implementation by @camickr useful.

This demo model works OK with the editor and the renderer from the linked sample:

public class DemoTableModel extends AbstractTableModel {
    @Override
    public boolean isCellEditable(int rowIndex, int columnIndex) {
        return (columnIndex == 0);
    }

    @Override
    public int getRowCount() {
        return 2;
    }

    @Override
    public int getColumnCount() {
        return 2;
    }

    @Override
    public String getColumnName(int columnIndex) {
        switch (columnIndex) {
        case 0:
            return "Button";
        case 1:
            return "Value";
        }
        return null;
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        switch (columnIndex) {
        case 0:
            return "Button";
        case 1:
            return "Value";
        }
        return null;
    }
}