how can I implement a tooltip which shows me for each cell a tip when the value is too long?
I just have a table renderer which colors me some cell. So I think the easiest way is to implement the metod in it.
public class ColorRenderer extends DefaultTableCellRenderer {
final int STATUS_COL = 7;
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean
hasFocus,
int row, int col) {
Component component = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
int modelIndex = table.convertRowIndexToModel(row);
String type = (String) table.getModel().getValueAt(modelIndex, 7);
if ("".endsWith(type)) {
component.setBackground(table.getBackground());
component.setForeground(table.getForeground());
} else {
component.setBackground(Color.RED);
component.setForeground(Color.WHITE);
}
if (isSelected) {
setBackground(table.getSelectionBackground());
setForeground(table.getSelectionForeground());
}
return component;
}
}
Thank you in advance.
Start by overriding the getToolTipText(MouseEvent) event of the JTable.
public String getToolTipText(MouseEvent e) {
String toolTipText = null;
Get the cell coordinates for the given mouse location...
Point p = e.getPoint(); // MouseEvent
int col = columnAtPoint(p);
int row = rowAtPoint(p);
Get the cells current size, this way we know what the current constraints are...
Rectangle bounds = getCellRect(row, col, false);
Get the renderer for the cell, based on the current value for the cell from the model...
Object value = getValueAt(row, col);
Component comp = prepareRenderer(getCellRenderer(row, col), row, col);
Compare the preferred size of the renderer component against the cell size...
if (comp.getPreferredSize().width > bounds.width) {
toolTipText = comp.getToolTipText();
}
Return the tool tip...
return toolTipText;
}