putting multiple checkboxes on a JTable cell

[Jhedzkie Skies]

hi there.

i would like to ask for some help regarding on this.

i have read a topic not long ago with the same matter but is about ImageIcon.

i tried to create my own but im getting not my desired output...

 
class CheckBoxPanel extends JPanel
    {
        JCheckBox unsigned = new JCheckBox("UNSIGNED",false);
        JCheckBox zerofill = new JCheckBox("ZEROFILL",false);
        JCheckBox binary = new JCheckBox("BINARY",false);
        JCheckBox[] boxes = {unsigned,zerofill,binary};
        ButtonGroup btnGrp = new ButtonGroup();
        CheckBoxPanel()
        {
            setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
            add(unsigned);
            add(zerofill);
            add(binary);
        }

        public void setSelectedIndex(int index)
        {
            for (int i=0;i<boxes.length;i++)
            {
                boxes[i].setSelected(i == index);
            }
        }

        public int getSelectedIndex()
        {
            for (int i=0; i<boxes.length; i++)
            {
                if (boxes[i].isSelected())
                {
                    return i;
                }
            }
            return -1;
        }

        public JCheckBox[] getButtons()
        {
            return boxes;
        }
    }
    
    class CheckBoxRenderer extends CheckBoxPanel implements TableCellRenderer
    {
        CheckBoxRenderer()
        {
            super();
        }

        public Component getTableCellRendererComponent(JTable table, Object value,
                boolean isSelected, boolean hasFocus, int row, int column)
        {
            if (value instanceof Integer)
            {
                //setSelectedIndex(((Integer)value).intValue());
            }
            return this;
        }
    }

    class CheckBoxEditor extends DefaultCellEditor implements ItemListener
    {
        CheckBoxPanel panel;

        public CheckBoxEditor(JCheckBox checkBox,CheckBoxPanel panel)
        {
            super(checkBox);
            this.panel = panel;
            ButtonGroup buttonGroup = new ButtonGroup();
            JCheckBox[] buttons = panel.getButtons();
            for (int i=0; i<buttons.length; i++)
            {
                buttonGroup.add(buttons[i]);
                buttons[i].addItemListener(this);

            }
        }

        public Component getTableCellEditorComponent
                (JTable table, Object value,boolean isSelected, int row, int column)
        {
            if (value instanceof Integer)
            {
                panel.setSelectedIndex(((Integer)value).intValue());
            }
            return panel;
        }

        public Object getCellEditorValue()
        {
            return new Integer(panel.getSelectedIndex());
        }

        public void itemStateChanged(ItemEvent e)
        {
            super.fireEditingStopped();
        }
    }
   

this code shows the boxes, but requires to double click on the checkbox before getting selected.

can somebody correct my code as single clicked? please?

thanks in advance.

[Peter Taucher]

I think there might be some code missing here ... because I don't see no tables. Nonetheless I think there might be a problem with the focus, so that the first mouse event on the table set's the focus (to the cell) and is consumed somehow. I think you might need to override the method 'isCellEditable' in your Editor...

[Jhedzkie Skies]

Peter Taucher wrote:I think there might be some code missing here ... because I don't see no tables.

these are just classes.

  

        table.getColumn("Flags").setCellRenderer(new CheckBoxRenderer());
        table.getColumn("Flags").setCellEditor
                (
                new CheckBoxEditor(new JCheckBox(),
                new CheckBoxPanel())
                );
    }
  

Jhedzkie Skies wrote:
this code shows the boxes, but requires to double click on the checkbox before getting selected.

can somebody correct my code as single clicked? please?

Peter Taucher wrote:
Nonetheless I think there might be a problem with the focus, so that the first mouse event on the table set's the focus (to the cell) and is consumed somehow. I think you might need to override the method 'isCellEditable' in your Editor...

ill try to do what you said. thanks for the tip.
can you give me some snippets? im completely puzzled about this.

[Rohit Kedia]

You can use clickCountToStart(1) which is a method of DefaultCellEditor Class

[Michael Dunn]

//super.fireEditingStopped();