I have found similar questions here on Stackoverflow, but for some reason when I try to implement what is suggested, I get a strange exception.
So I am trying to get adjust some of the heights on 3 of the columns dynamically.
public class AcquisitionTechniquesPanel extends JPanel {
private static final long serialVersionUID = -3326535610858334494L;
public static final int SIZE_OF_TABLE = 8;
private final JTable table;
private JCheckBox acquisitionTechniquesDone;
private Object[][] tableData;
private final String[] columnNames;
public AcquisitionTechniquesPanel() {
this.columnNames = new String[] { ApplicationStrings.ID, ApplicationStrings.TYPE, "Foo", "Bar", "Biz", "Baz", "Boz", ApplicationStrings.NO_OF_AR_S };
this.table = new JTable(tableData, columnNames);
initGUI();
}
public void initGUI() {
table.setColumnSelectionAllowed(
table.setDragEnabled(false);
table.setOpaque(true);
table.getTableHeader().setReorderingAllowed(false);
table.setModel(new DefaultTableModel());
JScrollPane scrollPane = new JScrollPane(table);
scrollPane.setPreferredSize(new Dimension(800, 320));
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
table.getColumnModel().getColumn(2).setCellRenderer(new VariableRowHeightRenderer());
table.getColumnModel().getColumn(3).setCellRenderer(new VariableRowHeightRenderer());
table.getColumnModel().getColumn(4).setCellRenderer(new VariableRowHeightRenderer());
}
});
}
public static class VariableRowHeightRenderer extends JLabel implements TableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
setText(String.valueOf(value));
if(getPreferredSize().height > 1)
table.setRowHeight(row, getPreferredSize().height);
return this;
}
}
}
Now when I run this code, for some reason I get java.lang.ArrayIndexOutOfBoundsException: 2 >= 0
I get this exception on the code table.getColumnModel().getColumn(2).setCellRenderer(new VariableRowHeightRenderer());
Which is strange, because the table should have 8 columns.
Does anyone know what I am doing wrong?
Please note that I am only showing relevant code
The problem comes from here:
table.setModel(new DefaultTableModel());
You set an empty model on your JTable and therefore overwrite the implicit model you have created with the JTable constructor. Simply remove that line and you should have your 8 columns.
Btw, there is no need to wrap your call in an invokeLater.
Below is an excerpt of SwingX' TableUtilies which provide the height adjustment. You use it like
this.table = new JTable(tableData, columnNames);
// initial sizing
TableUtilites.setPreferredRowHeights(table);
TableModelListener l = new TableModelListener() {
public void tableChanged(...) {
// dynamic sizing on changes
SwingUtilities.invokeLater() {
public void run() {
TableUtilities.setPreferredRowHeights(table);
}
};
}
};
table.getModel().addTableModelListener(l);
Utility methods from TableUtilities:
/**
* Returns the preferred height for the given row. It loops
* across all visible columns and returns the maximal pref height of
* the rendering component. Falls back to the table's base rowheight, i
* f there are no columns or the renderers
* max is zeor.<p>
*
* @param table the table which provides the renderers, must not be null
* @param row the index of the row in view coordinates
* @return the preferred row height of
* @throws NullPointerException if table is null.
* @throws IndexOutOfBoundsException if the row is not a valid row index
*/
public static int getPreferredRowHeight(JTable table, int row) {
int pref = 0;
for (int column = 0; column < table.getColumnCount(); column++) {
TableCellRenderer renderer = table.getCellRenderer(row, column);
Component comp = table.prepareRenderer(renderer, row, column);
pref = Math.max(pref, comp.getPreferredSize().height);
}
return pref > 0 ? pref : table.getRowHeight();
}
/**
*
* @param table the table which provides the renderers, must not be null
* @param row the index of the row in view coordinates
* @throws NullPointerException if table is null.
* @throws IndexOutOfBoundsException if the row is not a valid row index
*/
public static void setPreferredRowHeight(JTable table, int row) {
int prefHeight = getPreferredRowHeight(table, row);
table.setRowHeight(row, prefHeight);
}
/**
* Sets preferred row heights for all visible rows.
*
* @param table the table to set row heights to
* @throws NullPointerException if no table installed.
*/
public static void setPreferredRowHeights(JTable table) {
// care about visible rows only
for (int row = 0; row < table.getRowCount(); row++) {
setPreferredRowHeight(table, row);
}
}
remove, disable or change code line table.setColumnSelectionAllowed(
assume that ApplicationStrings.XXX
are global variables that returns String
value (or ""
)
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