Setting tooltip for headers of a table.

[pp_dv]

Hello All,

I am trying to set tooltip for the column headers of a table. While doing so, I am losing the previous font, borders and color values of the table. Though I am able to set back the color but not the font and border.

The code is a bit like this:


public class SampeTable extends TableScrollPane{
private JTable _mainTable=null;
public JTable buildTable(){
if (_mainTable == null)
{
_mainTable = this.getMainTable();

//Setting the widths as per column specifications
List<TicketColumn> columnsList= _appControlIntf.getBlotterTableModel().getColumns();
Color color=null;
Font font=null;
for(int i=0;i<columnsList.size();i++)
{
TableColumn tableColumn = null;

switch (getInBlotterTableModel().getColumnType(i))
{
case MultiTableModel.HEADER_COLUMN:
tableColumn = getRowHeaderTable().getColumnModel().getColumn(i);
break;
default:
tableColumn = getMainTable().getColumnModel().getColumn(i - getRowHeaderTable().getColumnCount());
}

tableColumn.setPreferredWidth(columnsList.get(i).getWidth());

// Render the first column as a checkbox
if (i == 0)
{
tableColumn.setCellRenderer(new BooleanCheckBoxCellRenderer());
color = ((BooleanCheckBoxCellRenderer) tableColumn.getCellRenderer()).getBackground();
font = ((BooleanCheckBoxCellRenderer) tableColumn.getCellRenderer()).getFont();
font = font.deriveFont(Font.BOLD);
tableColumn.setCellEditor(new BooleanCheckBoxCellEditor());
}
else
{
JLabel headerRenderer = new DefaultTableCellRenderer();
headerRenderer.setBackground(color);
headerRenderer.setFont(font);
headerRenderer.setToolTipText("Hello");
tableColumn.setHeaderRenderer((TableCellRenderer) headerRenderer);
}
}
initializeTable(_mainTable);
initializeTable(getRowHeaderTable());

}
return _mainTable;

}
private void initializeTable(JTable table)
{
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
table.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
((SortableTable) table).setOptimized(true);
JTableHeader header = table.getTableHeader();
header.setBorder(BorderFactory.createRaisedBevelBorder());
header.setFont(header.getFont().deriveFont(java.awt.Font.BOLD));

table.addMouseListener(new MouseListener()
{
public void mouseReleased(MouseEvent e)
{
showPopup(e);
}

public void mousePressed(MouseEvent e)
{
showPopup(e);
}

private void showPopup(MouseEvent e)
{
if (e.isPopupTrigger())
{
getInboundBlotterPopup().show(e.getComponent(), e.getX(), e.getY());
}
}

public void mouseClicked(MouseEvent e)
{
if (e.getClickCount() == 2)
{
_appControlIntf.showFixMessageBlotter(getSelectedInboundTicketView());
}

}

public void mouseEntered(MouseEvent e)
{
}

public void mouseExited(MouseEvent e)
{
}

});
}
}


With the above code, I am able to set the tooltip text, but the font and border are being compromised. For the column (i=0), the font and borders are fine as I am not using the DefaultCellRenderer. For the rest of the columns the color attribute is being set but not the font. I even tried to set the borders using the setBorder(), but to no avail.

Any help would be appreciated. Let me know if more inputs/code is required.

Regards,
pp_dv

[JIDE Support]

You don't want to use your own cell renderer for table header as you will never get the same border and style for some L&Fs. Please use an interface called ToolTipSupport we introduced. There is a sample in SortableTableDemo to show you how to use it.

Thanks,

[pp_dv]

Hello,

Thanks for the reply.

My situation is a bit like this: The _mainTable has a SortableTableModel which recursively nests to a custom table model class. I have made my custom table model class implement ToolTipSupport with necessary implementation. But still when I run my applet, I don't see the tool tip. I have debugged the _mainTable attribute and found that the dataModel attribute was deeply nested to the custom table model class.

I am not sure if I am missing something here.

public class InBlotterTableModel extends DVAbstractBlotterTableModel implements Runnable, LogIDProvider, ToolTipSupport{
///Some code here
public String getToolTipText(int columnIndex)
{
return InboundTicketViewColumns.COLUMNS.get(columnIndex).getName();
}

}

I also tried to add a breakpoint in the InBlotterTableModel at the implemented method. But the break point was never reached.

Regards,
pp_dv.

[JIDE Support]

We actually find the nested table model that implements ToolTipSupport and use it. Could you please make a simple test case for it and post here?

Thanks,

[Walter Laan]

Reading this thread I tought lets add header tooltips to our program, but I got the same problem.
It happens when a new table header is set or createDefaultTableHeader() is overridden.

Add the following code to SortableTableDemo:

Code: Select all

_sortableTable = new SortableTable(new SortableTableModel(tableModel)) {
  @Override
  protected JTableHeader createDefaultTableHeader() {
    return new SortableTableHeader(getColumnModel());
  }
};

// or only the to following line also shows the problem
// _sortableTable.setTableHeader(new SortableTableHeader(_sortableTable.getColumnModel()));

So if you could add a protected method installTableHeaderTooltips(), we could call that when overriding the createDefaultTableHeader method and you can call it in setTableHeader().

[pp_dv]

Hello,

Thanks for all your replies. I have found a workaround for this issue. I had added a mouse listener and mouse motion listener to the table header. These listeners do the job of displaying the tooltip. It seems to be working fine.

Thanks again.

pp_dv

[JIDE Support]

The table header has to know how to retrieve the tooltip. Here is our code in JideTable.

Code: Select all

    @Override
    protected JTableHeader createDefaultTableHeader() {
        if (isNestedTableHeader()) {
            return new NestedSortableTableHeader(getColumnModel()) {
                @Override
                public String getToolTipText(MouseEvent event) {
                    String toolTipText = getTableHeaderToolTipText(event);
                    if (toolTipText != null) {
                        return toolTipText;
                    }
                    else {
                        return super.getToolTipText(event);
                    }
                }
            };
        }
        else {
            return new SortableTableHeader(getColumnModel()) {
                @Override
                public String getToolTipText(MouseEvent event) {
                    String toolTipText = getTableHeaderToolTipText(event);
                    if (toolTipText != null) {
                        return toolTipText;
                    }
                    else {
                        return super.getToolTipText(event);
                    }
                }
            };
        }
    }